Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
b811d2c2 | 3 | Copyright (C) 1994-2020 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" |
82ca8957 | 32 | #include "dwarf2/read.h" |
3054dd54 | 33 | #include "dwarf2/abbrev.h" |
162dce55 | 34 | #include "dwarf2/attribute.h" |
4057dfde | 35 | #include "dwarf2/comp-unit.h" |
82ca8957 TT |
36 | #include "dwarf2/index-cache.h" |
37 | #include "dwarf2/index-common.h" | |
f4382c45 | 38 | #include "dwarf2/leb.h" |
8fdd972c | 39 | #include "dwarf2/line-header.h" |
4de283e4 TT |
40 | #include "bfd.h" |
41 | #include "elf-bfd.h" | |
42 | #include "symtab.h" | |
43 | #include "gdbtypes.h" | |
44 | #include "objfiles.h" | |
d55e5aa6 | 45 | #include "dwarf2.h" |
4de283e4 TT |
46 | #include "buildsym.h" |
47 | #include "demangle.h" | |
48 | #include "gdb-demangle.h" | |
4de283e4 TT |
49 | #include "filenames.h" /* for DOSish file names */ |
50 | #include "macrotab.h" | |
51 | #include "language.h" | |
52 | #include "complaints.h" | |
82ca8957 TT |
53 | #include "dwarf2/expr.h" |
54 | #include "dwarf2/loc.h" | |
4de283e4 TT |
55 | #include "cp-support.h" |
56 | #include "hashtab.h" | |
57 | #include "command.h" | |
d55e5aa6 | 58 | #include "gdbcmd.h" |
4de283e4 TT |
59 | #include "block.h" |
60 | #include "addrmap.h" | |
61 | #include "typeprint.h" | |
62 | #include "psympriv.h" | |
4de283e4 | 63 | #include "c-lang.h" |
d55e5aa6 | 64 | #include "go-lang.h" |
4de283e4 TT |
65 | #include "valprint.h" |
66 | #include "gdbcore.h" /* for gnutarget */ | |
67 | #include "gdb/gdb-index.h" | |
4de283e4 TT |
68 | #include "gdb_bfd.h" |
69 | #include "f-lang.h" | |
70 | #include "source.h" | |
4de283e4 | 71 | #include "build-id.h" |
d55e5aa6 | 72 | #include "namespace.h" |
268a13a5 TT |
73 | #include "gdbsupport/function-view.h" |
74 | #include "gdbsupport/gdb_optional.h" | |
75 | #include "gdbsupport/underlying.h" | |
268a13a5 | 76 | #include "gdbsupport/hash_enum.h" |
4de283e4 | 77 | #include "filename-seen-cache.h" |
b32b108a | 78 | #include "producer.h" |
4de283e4 | 79 | #include <fcntl.h> |
4de283e4 | 80 | #include <algorithm> |
4de283e4 | 81 | #include <unordered_map> |
268a13a5 | 82 | #include "gdbsupport/selftest.h" |
c9317f21 | 83 | #include "rust-lang.h" |
268a13a5 | 84 | #include "gdbsupport/pathstuff.h" |
edd45eb0 | 85 | #include "count-one-bits.h" |
437afbb8 | 86 | |
73be47f5 DE |
87 | /* When == 1, print basic high level tracing messages. |
88 | When > 1, be more verbose. | |
b4f54984 DE |
89 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
90 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 91 | |
d97bc12b | 92 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 93 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 94 | |
27e0867f | 95 | /* When non-zero, dump line number entries as they are read in. */ |
8fdd972c | 96 | unsigned int dwarf_line_debug = 0; |
27e0867f | 97 | |
491144b5 CB |
98 | /* When true, cross-check physname against demangler. */ |
99 | static bool check_physname = false; | |
900e11f9 | 100 | |
491144b5 CB |
101 | /* When true, do not reject deprecated .gdb_index sections. */ |
102 | static bool use_deprecated_index_sections = false; | |
481860b3 | 103 | |
5bfd760d | 104 | static const struct objfile_key<dwarf2_per_objfile> dwarf2_objfile_data_key; |
6502dd73 | 105 | |
f1e6e072 TT |
106 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
107 | ||
108 | static int dwarf2_locexpr_index; | |
109 | static int dwarf2_loclist_index; | |
110 | static int dwarf2_locexpr_block_index; | |
111 | static int dwarf2_loclist_block_index; | |
112 | ||
3f563c84 PA |
113 | /* An index into a (C++) symbol name component in a symbol name as |
114 | recorded in the mapped_index's symbol table. For each C++ symbol | |
115 | in the symbol table, we record one entry for the start of each | |
116 | component in the symbol in a table of name components, and then | |
117 | sort the table, in order to be able to binary search symbol names, | |
118 | ignoring leading namespaces, both completion and regular look up. | |
119 | For example, for symbol "A::B::C", we'll have an entry that points | |
120 | to "A::B::C", another that points to "B::C", and another for "C". | |
121 | Note that function symbols in GDB index have no parameter | |
122 | information, just the function/method names. You can convert a | |
123 | name_component to a "const char *" using the | |
124 | 'mapped_index::symbol_name_at(offset_type)' method. */ | |
125 | ||
126 | struct name_component | |
127 | { | |
128 | /* Offset in the symbol name where the component starts. Stored as | |
129 | a (32-bit) offset instead of a pointer to save memory and improve | |
130 | locality on 64-bit architectures. */ | |
131 | offset_type name_offset; | |
132 | ||
133 | /* The symbol's index in the symbol and constant pool tables of a | |
134 | mapped_index. */ | |
135 | offset_type idx; | |
136 | }; | |
137 | ||
44ed8f3e PA |
138 | /* Base class containing bits shared by both .gdb_index and |
139 | .debug_name indexes. */ | |
140 | ||
141 | struct mapped_index_base | |
142 | { | |
22ca247e TT |
143 | mapped_index_base () = default; |
144 | DISABLE_COPY_AND_ASSIGN (mapped_index_base); | |
145 | ||
44ed8f3e PA |
146 | /* The name_component table (a sorted vector). See name_component's |
147 | description above. */ | |
148 | std::vector<name_component> name_components; | |
149 | ||
150 | /* How NAME_COMPONENTS is sorted. */ | |
151 | enum case_sensitivity name_components_casing; | |
152 | ||
153 | /* Return the number of names in the symbol table. */ | |
154 | virtual size_t symbol_name_count () const = 0; | |
155 | ||
156 | /* Get the name of the symbol at IDX in the symbol table. */ | |
157 | virtual const char *symbol_name_at (offset_type idx) const = 0; | |
158 | ||
159 | /* Return whether the name at IDX in the symbol table should be | |
160 | ignored. */ | |
161 | virtual bool symbol_name_slot_invalid (offset_type idx) const | |
162 | { | |
163 | return false; | |
164 | } | |
165 | ||
166 | /* Build the symbol name component sorted vector, if we haven't | |
167 | yet. */ | |
168 | void build_name_components (); | |
169 | ||
170 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
171 | possible matches for LN_NO_PARAMS in the name component | |
172 | vector. */ | |
173 | std::pair<std::vector<name_component>::const_iterator, | |
174 | std::vector<name_component>::const_iterator> | |
3b00ef10 TT |
175 | find_name_components_bounds (const lookup_name_info &ln_no_params, |
176 | enum language lang) const; | |
44ed8f3e PA |
177 | |
178 | /* Prevent deleting/destroying via a base class pointer. */ | |
179 | protected: | |
180 | ~mapped_index_base() = default; | |
181 | }; | |
182 | ||
9291a0cd TT |
183 | /* A description of the mapped index. The file format is described in |
184 | a comment by the code that writes the index. */ | |
fc898b42 | 185 | struct mapped_index final : public mapped_index_base |
9291a0cd | 186 | { |
f00a2de2 PA |
187 | /* A slot/bucket in the symbol table hash. */ |
188 | struct symbol_table_slot | |
189 | { | |
190 | const offset_type name; | |
191 | const offset_type vec; | |
192 | }; | |
193 | ||
559a7a62 | 194 | /* Index data format version. */ |
3063847f | 195 | int version = 0; |
559a7a62 | 196 | |
f00a2de2 PA |
197 | /* The address table data. */ |
198 | gdb::array_view<const gdb_byte> address_table; | |
b11b1f88 | 199 | |
3876f04e | 200 | /* The symbol table, implemented as a hash table. */ |
f00a2de2 | 201 | gdb::array_view<symbol_table_slot> symbol_table; |
b11b1f88 | 202 | |
9291a0cd | 203 | /* A pointer to the constant pool. */ |
3063847f | 204 | const char *constant_pool = nullptr; |
3f563c84 | 205 | |
44ed8f3e PA |
206 | bool symbol_name_slot_invalid (offset_type idx) const override |
207 | { | |
208 | const auto &bucket = this->symbol_table[idx]; | |
9ab08412 | 209 | return bucket.name == 0 && bucket.vec == 0; |
44ed8f3e | 210 | } |
5c58de74 | 211 | |
3f563c84 PA |
212 | /* Convenience method to get at the name of the symbol at IDX in the |
213 | symbol table. */ | |
44ed8f3e | 214 | const char *symbol_name_at (offset_type idx) const override |
f00a2de2 | 215 | { return this->constant_pool + MAYBE_SWAP (this->symbol_table[idx].name); } |
5c58de74 | 216 | |
44ed8f3e PA |
217 | size_t symbol_name_count () const override |
218 | { return this->symbol_table.size (); } | |
9291a0cd TT |
219 | }; |
220 | ||
927aa2e7 JK |
221 | /* A description of the mapped .debug_names. |
222 | Uninitialized map has CU_COUNT 0. */ | |
fc898b42 | 223 | struct mapped_debug_names final : public mapped_index_base |
927aa2e7 | 224 | { |
ed2dc618 SM |
225 | mapped_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile_) |
226 | : dwarf2_per_objfile (dwarf2_per_objfile_) | |
227 | {} | |
228 | ||
229 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
927aa2e7 JK |
230 | bfd_endian dwarf5_byte_order; |
231 | bool dwarf5_is_dwarf64; | |
232 | bool augmentation_is_gdb; | |
233 | uint8_t offset_size; | |
234 | uint32_t cu_count = 0; | |
235 | uint32_t tu_count, bucket_count, name_count; | |
236 | const gdb_byte *cu_table_reordered, *tu_table_reordered; | |
237 | const uint32_t *bucket_table_reordered, *hash_table_reordered; | |
238 | const gdb_byte *name_table_string_offs_reordered; | |
239 | const gdb_byte *name_table_entry_offs_reordered; | |
240 | const gdb_byte *entry_pool; | |
241 | ||
242 | struct index_val | |
243 | { | |
244 | ULONGEST dwarf_tag; | |
245 | struct attr | |
246 | { | |
247 | /* Attribute name DW_IDX_*. */ | |
248 | ULONGEST dw_idx; | |
249 | ||
250 | /* Attribute form DW_FORM_*. */ | |
251 | ULONGEST form; | |
252 | ||
253 | /* Value if FORM is DW_FORM_implicit_const. */ | |
254 | LONGEST implicit_const; | |
255 | }; | |
256 | std::vector<attr> attr_vec; | |
257 | }; | |
258 | ||
259 | std::unordered_map<ULONGEST, index_val> abbrev_map; | |
260 | ||
261 | const char *namei_to_name (uint32_t namei) const; | |
44ed8f3e PA |
262 | |
263 | /* Implementation of the mapped_index_base virtual interface, for | |
264 | the name_components cache. */ | |
265 | ||
266 | const char *symbol_name_at (offset_type idx) const override | |
267 | { return namei_to_name (idx); } | |
268 | ||
269 | size_t symbol_name_count () const override | |
270 | { return this->name_count; } | |
927aa2e7 JK |
271 | }; |
272 | ||
cd4fb1b2 | 273 | /* See dwarf2read.h. */ |
ed2dc618 | 274 | |
cd4fb1b2 | 275 | dwarf2_per_objfile * |
ed2dc618 SM |
276 | get_dwarf2_per_objfile (struct objfile *objfile) |
277 | { | |
5bfd760d | 278 | return dwarf2_objfile_data_key.get (objfile); |
ed2dc618 | 279 | } |
c906108c | 280 | |
251d32d9 | 281 | /* Default names of the debugging sections. */ |
c906108c | 282 | |
233a11ab CS |
283 | /* Note that if the debugging section has been compressed, it might |
284 | have a name like .zdebug_info. */ | |
285 | ||
9cdd5dbd DE |
286 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
287 | { | |
251d32d9 TG |
288 | { ".debug_info", ".zdebug_info" }, |
289 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
290 | { ".debug_line", ".zdebug_line" }, | |
291 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 292 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 293 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 294 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 295 | { ".debug_str", ".zdebug_str" }, |
18a8505e | 296 | { ".debug_str_offsets", ".zdebug_str_offsets" }, |
43988095 | 297 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 298 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 299 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 300 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 301 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
302 | { ".debug_frame", ".zdebug_frame" }, |
303 | { ".eh_frame", NULL }, | |
24d3216f | 304 | { ".gdb_index", ".zgdb_index" }, |
927aa2e7 JK |
305 | { ".debug_names", ".zdebug_names" }, |
306 | { ".debug_aranges", ".zdebug_aranges" }, | |
24d3216f | 307 | 23 |
251d32d9 | 308 | }; |
c906108c | 309 | |
80626a55 | 310 | /* List of DWO/DWP sections. */ |
3019eac3 | 311 | |
80626a55 | 312 | static const struct dwop_section_names |
3019eac3 DE |
313 | { |
314 | struct dwarf2_section_names abbrev_dwo; | |
315 | struct dwarf2_section_names info_dwo; | |
316 | struct dwarf2_section_names line_dwo; | |
317 | struct dwarf2_section_names loc_dwo; | |
43988095 | 318 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
319 | struct dwarf2_section_names macinfo_dwo; |
320 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
321 | struct dwarf2_section_names str_dwo; |
322 | struct dwarf2_section_names str_offsets_dwo; | |
323 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
324 | struct dwarf2_section_names cu_index; |
325 | struct dwarf2_section_names tu_index; | |
3019eac3 | 326 | } |
80626a55 | 327 | dwop_section_names = |
3019eac3 DE |
328 | { |
329 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
330 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
331 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
332 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 333 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
334 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
335 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
336 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
337 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
338 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
339 | { ".debug_cu_index", ".zdebug_cu_index" }, |
340 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
341 | }; |
342 | ||
c906108c SS |
343 | /* local data types */ |
344 | ||
3da10d80 KS |
345 | /* Type used for delaying computation of method physnames. |
346 | See comments for compute_delayed_physnames. */ | |
347 | struct delayed_method_info | |
348 | { | |
349 | /* The type to which the method is attached, i.e., its parent class. */ | |
350 | struct type *type; | |
351 | ||
352 | /* The index of the method in the type's function fieldlists. */ | |
353 | int fnfield_index; | |
354 | ||
355 | /* The index of the method in the fieldlist. */ | |
356 | int index; | |
357 | ||
358 | /* The name of the DIE. */ | |
359 | const char *name; | |
360 | ||
361 | /* The DIE associated with this method. */ | |
362 | struct die_info *die; | |
363 | }; | |
364 | ||
e7c27a73 DJ |
365 | /* Internal state when decoding a particular compilation unit. */ |
366 | struct dwarf2_cu | |
367 | { | |
fcd3b13d SM |
368 | explicit dwarf2_cu (struct dwarf2_per_cu_data *per_cu); |
369 | ~dwarf2_cu (); | |
370 | ||
371 | DISABLE_COPY_AND_ASSIGN (dwarf2_cu); | |
372 | ||
c24bdb02 KS |
373 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
374 | Create the set of symtabs used by this TU, or if this TU is sharing | |
375 | symtabs with another TU and the symtabs have already been created | |
376 | then restore those symtabs in the line header. | |
377 | We don't need the pc/line-number mapping for type units. */ | |
378 | void setup_type_unit_groups (struct die_info *die); | |
379 | ||
380 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the | |
381 | buildsym_compunit constructor. */ | |
382 | struct compunit_symtab *start_symtab (const char *name, | |
383 | const char *comp_dir, | |
384 | CORE_ADDR low_pc); | |
385 | ||
386 | /* Reset the builder. */ | |
387 | void reset_builder () { m_builder.reset (); } | |
388 | ||
d00adf39 | 389 | /* The header of the compilation unit. */ |
fcd3b13d | 390 | struct comp_unit_head header {}; |
e142c38c | 391 | |
d00adf39 | 392 | /* Base address of this compilation unit. */ |
fcd3b13d | 393 | CORE_ADDR base_address = 0; |
d00adf39 DE |
394 | |
395 | /* Non-zero if base_address has been set. */ | |
fcd3b13d | 396 | int base_known = 0; |
d00adf39 | 397 | |
e142c38c | 398 | /* The language we are debugging. */ |
fcd3b13d SM |
399 | enum language language = language_unknown; |
400 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 401 | |
fcd3b13d | 402 | const char *producer = nullptr; |
b0f35d58 | 403 | |
c24bdb02 | 404 | private: |
804d2729 TT |
405 | /* The symtab builder for this CU. This is only non-NULL when full |
406 | symbols are being read. */ | |
c24bdb02 | 407 | std::unique_ptr<buildsym_compunit> m_builder; |
804d2729 | 408 | |
c24bdb02 | 409 | public: |
e142c38c DJ |
410 | /* The generic symbol table building routines have separate lists for |
411 | file scope symbols and all all other scopes (local scopes). So | |
412 | we need to select the right one to pass to add_symbol_to_list(). | |
413 | We do it by keeping a pointer to the correct list in list_in_scope. | |
414 | ||
415 | FIXME: The original dwarf code just treated the file scope as the | |
416 | first local scope, and all other local scopes as nested local | |
417 | scopes, and worked fine. Check to see if we really need to | |
418 | distinguish these in buildsym.c. */ | |
fcd3b13d | 419 | struct pending **list_in_scope = nullptr; |
e142c38c | 420 | |
b64f50a1 JK |
421 | /* Hash table holding all the loaded partial DIEs |
422 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 423 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
424 | |
425 | /* Storage for things with the same lifetime as this read-in compilation | |
426 | unit, including partial DIEs. */ | |
fcd3b13d | 427 | auto_obstack comp_unit_obstack; |
72bf9492 | 428 | |
ae038cb0 DJ |
429 | /* When multiple dwarf2_cu structures are living in memory, this field |
430 | chains them all together, so that they can be released efficiently. | |
431 | We will probably also want a generation counter so that most-recently-used | |
432 | compilation units are cached... */ | |
fcd3b13d | 433 | struct dwarf2_per_cu_data *read_in_chain = nullptr; |
ae038cb0 | 434 | |
69d751e3 | 435 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
436 | struct dwarf2_per_cu_data *per_cu; |
437 | ||
438 | /* How many compilation units ago was this CU last referenced? */ | |
fcd3b13d | 439 | int last_used = 0; |
ae038cb0 | 440 | |
b64f50a1 JK |
441 | /* A hash table of DIE cu_offset for following references with |
442 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 443 | htab_t die_hash = nullptr; |
10b3939b DJ |
444 | |
445 | /* Full DIEs if read in. */ | |
fcd3b13d | 446 | struct die_info *dies = nullptr; |
10b3939b DJ |
447 | |
448 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
449 | units referenced by this one. Only set during full symbol processing; | |
450 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 451 | htab_t dependencies = nullptr; |
10b3939b | 452 | |
cb1df416 | 453 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 454 | struct line_header *line_header = nullptr; |
4c8aa72d PA |
455 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
456 | it's owned by dwarf2_per_objfile::line_header_hash. If non-NULL, | |
457 | this is the DW_TAG_compile_unit die for this CU. We'll hold on | |
458 | to the line header as long as this DIE is being processed. See | |
459 | process_die_scope. */ | |
fcd3b13d | 460 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 461 | |
3da10d80 KS |
462 | /* A list of methods which need to have physnames computed |
463 | after all type information has been read. */ | |
c89b44cd | 464 | std::vector<delayed_method_info> method_list; |
3da10d80 | 465 | |
96408a79 | 466 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 467 | htab_t call_site_htab = nullptr; |
96408a79 | 468 | |
034e5797 DE |
469 | /* Non-NULL if this CU came from a DWO file. |
470 | There is an invariant here that is important to remember: | |
471 | Except for attributes copied from the top level DIE in the "main" | |
472 | (or "stub") file in preparation for reading the DWO file | |
18a8505e | 473 | (e.g., DW_AT_addr_base), we KISS: there is only *one* CU. |
034e5797 DE |
474 | Either there isn't a DWO file (in which case this is NULL and the point |
475 | is moot), or there is and either we're not going to read it (in which | |
476 | case this is NULL) or there is and we are reading it (in which case this | |
477 | is non-NULL). */ | |
fcd3b13d | 478 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 | 479 | |
18a8505e | 480 | /* The DW_AT_addr_base (DW_AT_GNU_addr_base) attribute if present. |
1dbab08b | 481 | Note this value comes from the Fission stub CU/TU's DIE. */ |
18a8505e | 482 | gdb::optional<ULONGEST> addr_base; |
3019eac3 | 483 | |
18a8505e | 484 | /* The DW_AT_rnglists_base attribute if present. |
1dbab08b | 485 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 486 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
487 | be used without needing to know whether DWO files are in use or not. |
488 | N.B. This does not apply to DW_AT_ranges appearing in | |
489 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
490 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
18a8505e | 491 | DW_AT_rnglists_base *would* have to be applied, and we'd have to care |
ab435259 | 492 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ |
fcd3b13d | 493 | ULONGEST ranges_base = 0; |
2e3cf129 | 494 | |
c9317f21 TT |
495 | /* When reading debug info generated by older versions of rustc, we |
496 | have to rewrite some union types to be struct types with a | |
497 | variant part. This rewriting must be done after the CU is fully | |
498 | read in, because otherwise at the point of rewriting some struct | |
499 | type might not have been fully processed. So, we keep a list of | |
500 | all such types here and process them after expansion. */ | |
501 | std::vector<struct type *> rust_unions; | |
502 | ||
18a8505e AT |
503 | /* The DW_AT_str_offsets_base attribute if present. For DWARF 4 version DWO |
504 | files, the value is implicitly zero. For DWARF 5 version DWO files, the | |
505 | value is often implicit and is the size of the header of | |
506 | .debug_str_offsets section (8 or 4, depending on the address size). */ | |
507 | gdb::optional<ULONGEST> str_offsets_base; | |
508 | ||
ae038cb0 | 509 | /* Mark used when releasing cached dies. */ |
9068261f | 510 | bool mark : 1; |
ae038cb0 | 511 | |
8be455d7 JK |
512 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
513 | This test is imperfect as there may exist optimized debug code not using | |
514 | any location list and still facing inlining issues if handled as | |
515 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
9068261f | 516 | bool has_loclist : 1; |
ba919b58 | 517 | |
9068261f | 518 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is true |
1b80a9fa JK |
519 | if all the producer_is_* fields are valid. This information is cached |
520 | because profiling CU expansion showed excessive time spent in | |
521 | producer_is_gxx_lt_4_6. */ | |
9068261f AB |
522 | bool checked_producer : 1; |
523 | bool producer_is_gxx_lt_4_6 : 1; | |
524 | bool producer_is_gcc_lt_4_3 : 1; | |
eb77c9df | 525 | bool producer_is_icc : 1; |
9068261f | 526 | bool producer_is_icc_lt_14 : 1; |
c258c396 | 527 | bool producer_is_codewarrior : 1; |
4d4ec4e5 | 528 | |
9068261f | 529 | /* When true, the file that we're processing is known to have |
4d4ec4e5 TT |
530 | debugging info for C++ namespaces. GCC 3.3.x did not produce |
531 | this information, but later versions do. */ | |
532 | ||
9068261f | 533 | bool processing_has_namespace_info : 1; |
d590ff25 YQ |
534 | |
535 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
c24bdb02 KS |
536 | |
537 | /* If this CU was inherited by another CU (via specification, | |
538 | abstract_origin, etc), this is the ancestor CU. */ | |
539 | dwarf2_cu *ancestor; | |
540 | ||
541 | /* Get the buildsym_compunit for this CU. */ | |
542 | buildsym_compunit *get_builder () | |
543 | { | |
544 | /* If this CU has a builder associated with it, use that. */ | |
545 | if (m_builder != nullptr) | |
546 | return m_builder.get (); | |
547 | ||
548 | /* Otherwise, search ancestors for a valid builder. */ | |
549 | if (ancestor != nullptr) | |
550 | return ancestor->get_builder (); | |
551 | ||
552 | return nullptr; | |
553 | } | |
e7c27a73 DJ |
554 | }; |
555 | ||
094b34ac DE |
556 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
557 | This includes type_unit_group and quick_file_names. */ | |
558 | ||
559 | struct stmt_list_hash | |
560 | { | |
561 | /* The DWO unit this table is from or NULL if there is none. */ | |
562 | struct dwo_unit *dwo_unit; | |
563 | ||
564 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 565 | sect_offset line_sect_off; |
094b34ac DE |
566 | }; |
567 | ||
f4dc4d17 DE |
568 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
569 | an object of this type. */ | |
570 | ||
571 | struct type_unit_group | |
572 | { | |
0186c6a7 | 573 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
574 | To simplify things we create an artificial CU that "includes" all the |
575 | type units using this stmt_list so that the rest of the code still has | |
197400e8 | 576 | a "per_cu" handle on the symtab. */ |
094b34ac DE |
577 | struct dwarf2_per_cu_data per_cu; |
578 | ||
0186c6a7 DE |
579 | /* The TUs that share this DW_AT_stmt_list entry. |
580 | This is added to while parsing type units to build partial symtabs, | |
581 | and is deleted afterwards and not used again. */ | |
a8b3b8e9 | 582 | std::vector<signatured_type *> *tus; |
f4dc4d17 | 583 | |
43f3e411 | 584 | /* The compunit symtab. |
094b34ac | 585 | Type units in a group needn't all be defined in the same source file, |
43f3e411 DE |
586 | so we create an essentially anonymous symtab as the compunit symtab. */ |
587 | struct compunit_symtab *compunit_symtab; | |
f4dc4d17 | 588 | |
094b34ac DE |
589 | /* The data used to construct the hash key. */ |
590 | struct stmt_list_hash hash; | |
f4dc4d17 | 591 | |
f4dc4d17 DE |
592 | /* The symbol tables for this TU (obtained from the files listed in |
593 | DW_AT_stmt_list). | |
594 | WARNING: The order of entries here must match the order of entries | |
595 | in the line header. After the first TU using this type_unit_group, the | |
596 | line header for the subsequent TUs is recreated from this. This is done | |
597 | because we need to use the same symtabs for each TU using the same | |
598 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
599 | there's no guarantee the line header doesn't have duplicate entries. */ | |
600 | struct symtab **symtabs; | |
601 | }; | |
602 | ||
73869dc2 | 603 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
604 | |
605 | struct dwo_sections | |
606 | { | |
607 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
608 | struct dwarf2_section_info line; |
609 | struct dwarf2_section_info loc; | |
43988095 | 610 | struct dwarf2_section_info loclists; |
09262596 DE |
611 | struct dwarf2_section_info macinfo; |
612 | struct dwarf2_section_info macro; | |
3019eac3 DE |
613 | struct dwarf2_section_info str; |
614 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
615 | /* In the case of a virtual DWO file, these two are unused. */ |
616 | struct dwarf2_section_info info; | |
fd5866f6 | 617 | std::vector<dwarf2_section_info> types; |
3019eac3 DE |
618 | }; |
619 | ||
c88ee1f0 | 620 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
621 | |
622 | struct dwo_unit | |
623 | { | |
624 | /* Backlink to the containing struct dwo_file. */ | |
625 | struct dwo_file *dwo_file; | |
626 | ||
627 | /* The "id" that distinguishes this CU/TU. | |
628 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
629 | Since signatures came first, we stick with it for consistency. */ | |
630 | ULONGEST signature; | |
631 | ||
632 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 633 | struct dwarf2_section_info *section; |
3019eac3 | 634 | |
9c541725 PA |
635 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
636 | sect_offset sect_off; | |
3019eac3 DE |
637 | unsigned int length; |
638 | ||
639 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
640 | cu_offset type_offset_in_tu; | |
641 | }; | |
642 | ||
73869dc2 DE |
643 | /* include/dwarf2.h defines the DWP section codes. |
644 | It defines a max value but it doesn't define a min value, which we | |
645 | use for error checking, so provide one. */ | |
646 | ||
647 | enum dwp_v2_section_ids | |
648 | { | |
649 | DW_SECT_MIN = 1 | |
650 | }; | |
651 | ||
80626a55 | 652 | /* Data for one DWO file. |
57d63ce2 DE |
653 | |
654 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
655 | appears in a DWP file). DWP files don't really have DWO files per se - | |
656 | comdat folding of types "loses" the DWO file they came from, and from | |
657 | a high level view DWP files appear to contain a mass of random types. | |
658 | However, to maintain consistency with the non-DWP case we pretend DWP | |
659 | files contain virtual DWO files, and we assign each TU with one virtual | |
660 | DWO file (generally based on the line and abbrev section offsets - | |
661 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
662 | |
663 | struct dwo_file | |
664 | { | |
51ac9db5 SM |
665 | dwo_file () = default; |
666 | DISABLE_COPY_AND_ASSIGN (dwo_file); | |
667 | ||
18a8505e | 668 | /* The DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. |
80626a55 DE |
669 | For virtual DWO files the name is constructed from the section offsets |
670 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
671 | from related CU+TUs. */ | |
51ac9db5 | 672 | const char *dwo_name = nullptr; |
0ac5b59e DE |
673 | |
674 | /* The DW_AT_comp_dir attribute. */ | |
51ac9db5 | 675 | const char *comp_dir = nullptr; |
3019eac3 | 676 | |
80626a55 DE |
677 | /* The bfd, when the file is open. Otherwise this is NULL. |
678 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
fb1eb2f9 | 679 | gdb_bfd_ref_ptr dbfd; |
3019eac3 | 680 | |
73869dc2 DE |
681 | /* The sections that make up this DWO file. |
682 | Remember that for virtual DWO files in DWP V2, these are virtual | |
683 | sections (for lack of a better name). */ | |
51ac9db5 | 684 | struct dwo_sections sections {}; |
3019eac3 | 685 | |
33c5cd75 DB |
686 | /* The CUs in the file. |
687 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
688 | an extension to handle LLVM's Link Time Optimization output (where | |
689 | multiple source files may be compiled into a single object/dwo pair). */ | |
b0b6a987 | 690 | htab_up cus; |
3019eac3 DE |
691 | |
692 | /* Table of TUs in the file. | |
693 | Each element is a struct dwo_unit. */ | |
b0b6a987 | 694 | htab_up tus; |
3019eac3 DE |
695 | }; |
696 | ||
80626a55 DE |
697 | /* These sections are what may appear in a DWP file. */ |
698 | ||
699 | struct dwp_sections | |
700 | { | |
73869dc2 | 701 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
702 | struct dwarf2_section_info str; |
703 | struct dwarf2_section_info cu_index; | |
704 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
705 | |
706 | /* These are only used by DWP version 2 files. | |
707 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
708 | sections are referenced by section number, and are not recorded here. | |
709 | In DWP version 2 there is at most one copy of all these sections, each | |
710 | section being (effectively) comprised of the concatenation of all of the | |
711 | individual sections that exist in the version 1 format. | |
712 | To keep the code simple we treat each of these concatenated pieces as a | |
713 | section itself (a virtual section?). */ | |
714 | struct dwarf2_section_info abbrev; | |
715 | struct dwarf2_section_info info; | |
716 | struct dwarf2_section_info line; | |
717 | struct dwarf2_section_info loc; | |
718 | struct dwarf2_section_info macinfo; | |
719 | struct dwarf2_section_info macro; | |
720 | struct dwarf2_section_info str_offsets; | |
721 | struct dwarf2_section_info types; | |
80626a55 DE |
722 | }; |
723 | ||
73869dc2 DE |
724 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
725 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 726 | |
73869dc2 | 727 | struct virtual_v1_dwo_sections |
80626a55 DE |
728 | { |
729 | struct dwarf2_section_info abbrev; | |
730 | struct dwarf2_section_info line; | |
731 | struct dwarf2_section_info loc; | |
732 | struct dwarf2_section_info macinfo; | |
733 | struct dwarf2_section_info macro; | |
734 | struct dwarf2_section_info str_offsets; | |
735 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 736 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
737 | struct dwarf2_section_info info_or_types; |
738 | }; | |
739 | ||
73869dc2 DE |
740 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
741 | In version 2, the sections of the DWO files are concatenated together | |
742 | and stored in one section of that name. Thus each ELF section contains | |
743 | several "virtual" sections. */ | |
744 | ||
745 | struct virtual_v2_dwo_sections | |
746 | { | |
747 | bfd_size_type abbrev_offset; | |
748 | bfd_size_type abbrev_size; | |
749 | ||
750 | bfd_size_type line_offset; | |
751 | bfd_size_type line_size; | |
752 | ||
753 | bfd_size_type loc_offset; | |
754 | bfd_size_type loc_size; | |
755 | ||
756 | bfd_size_type macinfo_offset; | |
757 | bfd_size_type macinfo_size; | |
758 | ||
759 | bfd_size_type macro_offset; | |
760 | bfd_size_type macro_size; | |
761 | ||
762 | bfd_size_type str_offsets_offset; | |
763 | bfd_size_type str_offsets_size; | |
764 | ||
765 | /* Each DWP hash table entry records one CU or one TU. | |
766 | That is recorded here, and copied to dwo_unit.section. */ | |
767 | bfd_size_type info_or_types_offset; | |
768 | bfd_size_type info_or_types_size; | |
769 | }; | |
770 | ||
80626a55 DE |
771 | /* Contents of DWP hash tables. */ |
772 | ||
773 | struct dwp_hash_table | |
774 | { | |
73869dc2 | 775 | uint32_t version, nr_columns; |
80626a55 | 776 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
777 | const gdb_byte *hash_table, *unit_table; |
778 | union | |
779 | { | |
780 | struct | |
781 | { | |
782 | const gdb_byte *indices; | |
783 | } v1; | |
784 | struct | |
785 | { | |
786 | /* This is indexed by column number and gives the id of the section | |
787 | in that column. */ | |
788 | #define MAX_NR_V2_DWO_SECTIONS \ | |
789 | (1 /* .debug_info or .debug_types */ \ | |
790 | + 1 /* .debug_abbrev */ \ | |
791 | + 1 /* .debug_line */ \ | |
792 | + 1 /* .debug_loc */ \ | |
793 | + 1 /* .debug_str_offsets */ \ | |
794 | + 1 /* .debug_macro or .debug_macinfo */) | |
795 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
796 | const gdb_byte *offsets; | |
797 | const gdb_byte *sizes; | |
798 | } v2; | |
799 | } section_pool; | |
80626a55 DE |
800 | }; |
801 | ||
802 | /* Data for one DWP file. */ | |
803 | ||
804 | struct dwp_file | |
805 | { | |
400174b1 TT |
806 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
807 | : name (name_), | |
808 | dbfd (std::move (abfd)) | |
809 | { | |
810 | } | |
811 | ||
80626a55 DE |
812 | /* Name of the file. */ |
813 | const char *name; | |
814 | ||
73869dc2 | 815 | /* File format version. */ |
400174b1 | 816 | int version = 0; |
73869dc2 | 817 | |
93417882 | 818 | /* The bfd. */ |
400174b1 | 819 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
820 | |
821 | /* Section info for this file. */ | |
400174b1 | 822 | struct dwp_sections sections {}; |
80626a55 | 823 | |
57d63ce2 | 824 | /* Table of CUs in the file. */ |
400174b1 | 825 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
826 | |
827 | /* Table of TUs in the file. */ | |
400174b1 | 828 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 829 | |
19ac8c2e | 830 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
48b490f2 TT |
831 | htab_up loaded_cus; |
832 | htab_up loaded_tus; | |
80626a55 | 833 | |
73869dc2 DE |
834 | /* Table to map ELF section numbers to their sections. |
835 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
836 | unsigned int num_sections = 0; |
837 | asection **elf_sections = nullptr; | |
80626a55 DE |
838 | }; |
839 | ||
0963b4bd MS |
840 | /* Struct used to pass misc. parameters to read_die_and_children, et |
841 | al. which are used for both .debug_info and .debug_types dies. | |
842 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 843 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
844 | |
845 | struct die_reader_specs | |
846 | { | |
a32a8923 | 847 | /* The bfd of die_section. */ |
93311388 DE |
848 | bfd* abfd; |
849 | ||
850 | /* The CU of the DIE we are parsing. */ | |
851 | struct dwarf2_cu *cu; | |
852 | ||
80626a55 | 853 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
854 | struct dwo_file *dwo_file; |
855 | ||
dee91e82 | 856 | /* The section the die comes from. |
3019eac3 | 857 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
858 | struct dwarf2_section_info *die_section; |
859 | ||
860 | /* die_section->buffer. */ | |
d521ce57 | 861 | const gdb_byte *buffer; |
f664829e DE |
862 | |
863 | /* The end of the buffer. */ | |
864 | const gdb_byte *buffer_end; | |
a2ce51a0 | 865 | |
685af9cd TT |
866 | /* The abbreviation table to use when reading the DIEs. */ |
867 | struct abbrev_table *abbrev_table; | |
93311388 DE |
868 | }; |
869 | ||
c0ab21c2 TT |
870 | /* A subclass of die_reader_specs that holds storage and has complex |
871 | constructor and destructor behavior. */ | |
872 | ||
873 | class cutu_reader : public die_reader_specs | |
874 | { | |
875 | public: | |
876 | ||
877 | cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
878 | struct abbrev_table *abbrev_table, | |
6751ebae | 879 | int use_existing_cu, |
c0ab21c2 TT |
880 | bool skip_partial); |
881 | ||
882 | explicit cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
883 | struct dwarf2_cu *parent_cu = nullptr, | |
884 | struct dwo_file *dwo_file = nullptr); | |
885 | ||
c0ab21c2 TT |
886 | DISABLE_COPY_AND_ASSIGN (cutu_reader); |
887 | ||
888 | const gdb_byte *info_ptr = nullptr; | |
889 | struct die_info *comp_unit_die = nullptr; | |
c0ab21c2 TT |
890 | bool dummy_p = false; |
891 | ||
6751ebae TT |
892 | /* Release the new CU, putting it on the chain. This cannot be done |
893 | for dummy CUs. */ | |
894 | void keep (); | |
895 | ||
c0ab21c2 TT |
896 | private: |
897 | void init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, | |
6751ebae | 898 | int use_existing_cu); |
c0ab21c2 TT |
899 | |
900 | struct dwarf2_per_cu_data *m_this_cu; | |
c0ab21c2 TT |
901 | std::unique_ptr<dwarf2_cu> m_new_cu; |
902 | ||
903 | /* The ordinary abbreviation table. */ | |
904 | abbrev_table_up m_abbrev_table_holder; | |
905 | ||
906 | /* The DWO abbreviation table. */ | |
907 | abbrev_table_up m_dwo_abbrev_table; | |
908 | }; | |
dee91e82 | 909 | |
c906108c | 910 | /* When we construct a partial symbol table entry we only |
0963b4bd | 911 | need this much information. */ |
6f06d47b | 912 | struct partial_die_info : public allocate_on_obstack |
c906108c | 913 | { |
6f06d47b YQ |
914 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
915 | ||
916 | /* Disable assign but still keep copy ctor, which is needed | |
917 | load_partial_dies. */ | |
918 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
919 | ||
52356b79 YQ |
920 | /* Adjust the partial die before generating a symbol for it. This |
921 | function may set the is_external flag or change the DIE's | |
922 | name. */ | |
923 | void fixup (struct dwarf2_cu *cu); | |
924 | ||
48fbe735 YQ |
925 | /* Read a minimal amount of information into the minimal die |
926 | structure. */ | |
927 | const gdb_byte *read (const struct die_reader_specs *reader, | |
928 | const struct abbrev_info &abbrev, | |
929 | const gdb_byte *info_ptr); | |
930 | ||
72bf9492 | 931 | /* Offset of this DIE. */ |
6f06d47b | 932 | const sect_offset sect_off; |
72bf9492 DJ |
933 | |
934 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 935 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 936 | |
72bf9492 | 937 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
938 | const unsigned int has_children : 1; |
939 | ||
72bf9492 DJ |
940 | unsigned int is_external : 1; |
941 | unsigned int is_declaration : 1; | |
942 | unsigned int has_type : 1; | |
943 | unsigned int has_specification : 1; | |
944 | unsigned int has_pc_info : 1; | |
481860b3 | 945 | unsigned int may_be_inlined : 1; |
72bf9492 | 946 | |
0c1b455e TT |
947 | /* This DIE has been marked DW_AT_main_subprogram. */ |
948 | unsigned int main_subprogram : 1; | |
949 | ||
72bf9492 DJ |
950 | /* Flag set if the SCOPE field of this structure has been |
951 | computed. */ | |
952 | unsigned int scope_set : 1; | |
953 | ||
fa4028e9 JB |
954 | /* Flag set if the DIE has a byte_size attribute. */ |
955 | unsigned int has_byte_size : 1; | |
956 | ||
ff908ebf AW |
957 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
958 | unsigned int has_const_value : 1; | |
959 | ||
98bfdba5 PA |
960 | /* Flag set if any of the DIE's children are template arguments. */ |
961 | unsigned int has_template_arguments : 1; | |
962 | ||
52356b79 | 963 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
964 | unsigned int fixup_called : 1; |
965 | ||
36586728 TT |
966 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
967 | unsigned int is_dwz : 1; | |
968 | ||
969 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
970 | unsigned int spec_is_dwz : 1; | |
971 | ||
72bf9492 | 972 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 973 | sometimes a default name for unnamed DIEs. */ |
6f06d47b | 974 | const char *name = nullptr; |
72bf9492 | 975 | |
abc72ce4 | 976 | /* The linkage name, if present. */ |
6f06d47b | 977 | const char *linkage_name = nullptr; |
abc72ce4 | 978 | |
72bf9492 DJ |
979 | /* The scope to prepend to our children. This is generally |
980 | allocated on the comp_unit_obstack, so will disappear | |
981 | when this compilation unit leaves the cache. */ | |
6f06d47b | 982 | const char *scope = nullptr; |
72bf9492 | 983 | |
95554aad TT |
984 | /* Some data associated with the partial DIE. The tag determines |
985 | which field is live. */ | |
986 | union | |
987 | { | |
988 | /* The location description associated with this DIE, if any. */ | |
989 | struct dwarf_block *locdesc; | |
990 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 991 | sect_offset sect_off; |
6f06d47b | 992 | } d {}; |
72bf9492 DJ |
993 | |
994 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
995 | CORE_ADDR lowpc = 0; |
996 | CORE_ADDR highpc = 0; | |
72bf9492 | 997 | |
93311388 | 998 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 999 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1000 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1001 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1002 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1003 | |
1004 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1005 | DW_AT_specification (or DW_AT_abstract_origin or | |
1006 | DW_AT_extension). */ | |
6f06d47b | 1007 | sect_offset spec_offset {}; |
72bf9492 DJ |
1008 | |
1009 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1010 | if any. */ | |
6f06d47b YQ |
1011 | struct partial_die_info *die_parent = nullptr; |
1012 | struct partial_die_info *die_child = nullptr; | |
1013 | struct partial_die_info *die_sibling = nullptr; | |
1014 | ||
1015 | friend struct partial_die_info * | |
1016 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1017 | ||
1018 | private: | |
1019 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1020 | partial_die_info (sect_offset sect_off) | |
1021 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1022 | { | |
1023 | } | |
1024 | ||
1025 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1026 | int has_children_) | |
1027 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1028 | { | |
1029 | is_external = 0; | |
1030 | is_declaration = 0; | |
1031 | has_type = 0; | |
1032 | has_specification = 0; | |
1033 | has_pc_info = 0; | |
1034 | may_be_inlined = 0; | |
1035 | main_subprogram = 0; | |
1036 | scope_set = 0; | |
1037 | has_byte_size = 0; | |
1038 | has_const_value = 0; | |
1039 | has_template_arguments = 0; | |
1040 | fixup_called = 0; | |
1041 | is_dwz = 0; | |
1042 | spec_is_dwz = 0; | |
1043 | } | |
c906108c SS |
1044 | }; |
1045 | ||
0963b4bd | 1046 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1047 | struct die_info |
1048 | { | |
76815b17 DE |
1049 | /* DWARF-2 tag for this DIE. */ |
1050 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1051 | ||
1052 | /* Number of attributes */ | |
98bfdba5 PA |
1053 | unsigned char num_attrs; |
1054 | ||
1055 | /* True if we're presently building the full type name for the | |
1056 | type derived from this DIE. */ | |
1057 | unsigned char building_fullname : 1; | |
76815b17 | 1058 | |
adde2bff DE |
1059 | /* True if this die is in process. PR 16581. */ |
1060 | unsigned char in_process : 1; | |
1061 | ||
3e225074 TT |
1062 | /* True if this DIE has children. */ |
1063 | unsigned char has_children : 1; | |
1064 | ||
76815b17 DE |
1065 | /* Abbrev number */ |
1066 | unsigned int abbrev; | |
1067 | ||
93311388 | 1068 | /* Offset in .debug_info or .debug_types section. */ |
9c541725 | 1069 | sect_offset sect_off; |
78ba4af6 JB |
1070 | |
1071 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1072 | points to this die's parent; CHILD points to the first child of | |
1073 | this node; and all the children of a given node are chained | |
4950bc1c | 1074 | together via their SIBLING fields. */ |
639d11d3 DC |
1075 | struct die_info *child; /* Its first child, if any. */ |
1076 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1077 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1078 | |
b60c80d6 DJ |
1079 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1080 | zero, but it's not common and zero-sized arrays are not | |
1081 | sufficiently portable C. */ | |
1082 | struct attribute attrs[1]; | |
c906108c SS |
1083 | }; |
1084 | ||
c906108c SS |
1085 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1086 | but this would require a corresponding change in unpack_field_as_long | |
1087 | and friends. */ | |
1088 | static int bits_per_byte = 8; | |
1089 | ||
2ddeaf8a TT |
1090 | /* When reading a variant or variant part, we track a bit more |
1091 | information about the field, and store it in an object of this | |
1092 | type. */ | |
1093 | ||
1094 | struct variant_field | |
1095 | { | |
1096 | /* If we see a DW_TAG_variant, then this will be the discriminant | |
1097 | value. */ | |
1098 | ULONGEST discriminant_value; | |
1099 | /* If we see a DW_TAG_variant, then this will be set if this is the | |
1100 | default branch. */ | |
1101 | bool default_branch; | |
1102 | /* While reading a DW_TAG_variant_part, this will be set if this | |
1103 | field is the discriminant. */ | |
1104 | bool is_discriminant; | |
1105 | }; | |
1106 | ||
52059ffd TT |
1107 | struct nextfield |
1108 | { | |
be2daae6 TT |
1109 | int accessibility = 0; |
1110 | int virtuality = 0; | |
2ddeaf8a | 1111 | /* Extra information to describe a variant or variant part. */ |
be2daae6 TT |
1112 | struct variant_field variant {}; |
1113 | struct field field {}; | |
52059ffd TT |
1114 | }; |
1115 | ||
1116 | struct fnfieldlist | |
1117 | { | |
be2daae6 TT |
1118 | const char *name = nullptr; |
1119 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1120 | }; |
1121 | ||
c906108c SS |
1122 | /* The routines that read and process dies for a C struct or C++ class |
1123 | pass lists of data member fields and lists of member function fields | |
1124 | in an instance of a field_info structure, as defined below. */ | |
1125 | struct field_info | |
c5aa993b | 1126 | { |
0963b4bd | 1127 | /* List of data member and baseclasses fields. */ |
be2daae6 TT |
1128 | std::vector<struct nextfield> fields; |
1129 | std::vector<struct nextfield> baseclasses; | |
c906108c | 1130 | |
7d0ccb61 | 1131 | /* Number of fields (including baseclasses). */ |
be2daae6 | 1132 | int nfields = 0; |
c906108c | 1133 | |
85102364 | 1134 | /* Set if the accessibility of one of the fields is not public. */ |
be2daae6 | 1135 | int non_public_fields = 0; |
c906108c | 1136 | |
c5aa993b JM |
1137 | /* Member function fieldlist array, contains name of possibly overloaded |
1138 | member function, number of overloaded member functions and a pointer | |
1139 | to the head of the member function field chain. */ | |
be2daae6 | 1140 | std::vector<struct fnfieldlist> fnfieldlists; |
98751a41 JK |
1141 | |
1142 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1143 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
be2daae6 | 1144 | std::vector<struct decl_field> typedef_field_list; |
883fd55a KS |
1145 | |
1146 | /* Nested types defined by this class and the number of elements in this | |
1147 | list. */ | |
be2daae6 | 1148 | std::vector<struct decl_field> nested_types_list; |
c5aa993b | 1149 | }; |
c906108c | 1150 | |
ae038cb0 DJ |
1151 | /* Loaded secondary compilation units are kept in memory until they |
1152 | have not been referenced for the processing of this many | |
1153 | compilation units. Set this to zero to disable caching. Cache | |
1154 | sizes of up to at least twenty will improve startup time for | |
1155 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1156 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1157 | static void |
b4f54984 DE |
1158 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1159 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1160 | { |
3e43a32a | 1161 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1162 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1163 | value); |
1164 | } | |
4390d890 | 1165 | \f |
c906108c SS |
1166 | /* local function prototypes */ |
1167 | ||
918dd910 JK |
1168 | static void dwarf2_find_base_address (struct die_info *die, |
1169 | struct dwarf2_cu *cu); | |
1170 | ||
891813be | 1171 | static dwarf2_psymtab *create_partial_symtab |
0018ea6f DE |
1172 | (struct dwarf2_per_cu_data *per_cu, const char *name); |
1173 | ||
f1902523 JK |
1174 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1175 | const gdb_byte *info_ptr, | |
3e225074 | 1176 | struct die_info *type_unit_die); |
f1902523 | 1177 | |
ed2dc618 SM |
1178 | static void dwarf2_build_psymtabs_hard |
1179 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
c906108c | 1180 | |
72bf9492 DJ |
1181 | static void scan_partial_symbols (struct partial_die_info *, |
1182 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1183 | int, struct dwarf2_cu *); |
c906108c | 1184 | |
72bf9492 DJ |
1185 | static void add_partial_symbol (struct partial_die_info *, |
1186 | struct dwarf2_cu *); | |
63d06c5c | 1187 | |
72bf9492 DJ |
1188 | static void add_partial_namespace (struct partial_die_info *pdi, |
1189 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1190 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1191 | |
5d7cb8df | 1192 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1193 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1194 | struct dwarf2_cu *cu); |
1195 | ||
72bf9492 DJ |
1196 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1197 | struct dwarf2_cu *cu); | |
91c24f0a | 1198 | |
bc30ff58 JB |
1199 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1200 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1201 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1202 | |
d521ce57 | 1203 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1204 | |
dee91e82 | 1205 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1206 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1207 | |
fb816e8b TV |
1208 | /* A pair of partial_die_info and compilation unit. */ |
1209 | struct cu_partial_die_info | |
1210 | { | |
1211 | /* The compilation unit of the partial_die_info. */ | |
1212 | struct dwarf2_cu *cu; | |
1213 | /* A partial_die_info. */ | |
1214 | struct partial_die_info *pdi; | |
122cf0f2 AB |
1215 | |
1216 | cu_partial_die_info (struct dwarf2_cu *cu, struct partial_die_info *pdi) | |
1217 | : cu (cu), | |
1218 | pdi (pdi) | |
405feb71 | 1219 | { /* Nothing. */ } |
122cf0f2 AB |
1220 | |
1221 | private: | |
1222 | cu_partial_die_info () = delete; | |
fb816e8b TV |
1223 | }; |
1224 | ||
122cf0f2 AB |
1225 | static const struct cu_partial_die_info find_partial_die (sect_offset, int, |
1226 | struct dwarf2_cu *); | |
72bf9492 | 1227 | |
d521ce57 TT |
1228 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1229 | struct attribute *, struct attr_abbrev *, | |
18a8505e AT |
1230 | const gdb_byte *, bool *need_reprocess); |
1231 | ||
1232 | static void read_attribute_reprocess (const struct die_reader_specs *reader, | |
1233 | struct attribute *attr); | |
1234 | ||
1235 | static CORE_ADDR read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index); | |
a8329558 | 1236 | |
c764a876 | 1237 | static LONGEST read_checked_initial_length_and_offset |
d521ce57 | 1238 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1239 | unsigned int *, unsigned int *); |
613e1657 | 1240 | |
ed2dc618 SM |
1241 | static sect_offset read_abbrev_offset |
1242 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
1243 | struct dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1244 | |
ed2dc618 SM |
1245 | static const char *read_indirect_string |
1246 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1247 | const struct comp_unit_head *, unsigned int *); | |
4bdf3d34 | 1248 | |
ed2dc618 SM |
1249 | static const char *read_indirect_line_string |
1250 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1251 | const struct comp_unit_head *, unsigned int *); | |
36586728 | 1252 | |
ed2dc618 SM |
1253 | static const char *read_indirect_string_at_offset |
1254 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, | |
1255 | LONGEST str_offset); | |
927aa2e7 | 1256 | |
ed2dc618 SM |
1257 | static const char *read_indirect_string_from_dwz |
1258 | (struct objfile *objfile, struct dwz_file *, LONGEST); | |
c906108c | 1259 | |
d521ce57 TT |
1260 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1261 | const gdb_byte *, | |
3019eac3 DE |
1262 | unsigned int *); |
1263 | ||
18a8505e AT |
1264 | static const char *read_dwo_str_index (const struct die_reader_specs *reader, |
1265 | ULONGEST str_index); | |
1266 | ||
1267 | static const char *read_stub_str_index (struct dwarf2_cu *cu, | |
1268 | ULONGEST str_index); | |
3019eac3 | 1269 | |
e142c38c | 1270 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1271 | |
e142c38c DJ |
1272 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1273 | struct dwarf2_cu *); | |
c906108c | 1274 | |
348e048f | 1275 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1276 | unsigned int); |
348e048f | 1277 | |
7d45c7c3 KB |
1278 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1279 | struct dwarf2_cu *cu); | |
1280 | ||
a084a2a6 AT |
1281 | static const char *dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu); |
1282 | ||
05cf31d1 JB |
1283 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1284 | struct dwarf2_cu *cu); | |
1285 | ||
e142c38c | 1286 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1287 | |
e142c38c | 1288 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1289 | struct dwarf2_cu **); |
63d06c5c | 1290 | |
9c541725 | 1291 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1292 | struct dwarf2_cu *cu); |
debd256d | 1293 | |
f3f5162e | 1294 | static void dwarf_decode_lines (struct line_header *, const char *, |
891813be | 1295 | struct dwarf2_cu *, dwarf2_psymtab *, |
527f3840 | 1296 | CORE_ADDR, int decode_mapping); |
c906108c | 1297 | |
804d2729 TT |
1298 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1299 | const char *); | |
c906108c | 1300 | |
a14ed312 | 1301 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1302 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1303 | |
ff39bb5e | 1304 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1305 | struct dwarf2_cu *); |
c906108c | 1306 | |
ff39bb5e | 1307 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1308 | struct type *type, |
1309 | const char *name, | |
1310 | struct obstack *obstack, | |
12df843f | 1311 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1312 | const gdb_byte **bytes, |
98bfdba5 | 1313 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1314 | |
e7c27a73 | 1315 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1316 | |
b4ba55a1 JB |
1317 | static int need_gnat_info (struct dwarf2_cu *); |
1318 | ||
3e43a32a MS |
1319 | static struct type *die_descriptive_type (struct die_info *, |
1320 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1321 | |
1322 | static void set_descriptive_type (struct type *, struct die_info *, | |
1323 | struct dwarf2_cu *); | |
1324 | ||
e7c27a73 DJ |
1325 | static struct type *die_containing_type (struct die_info *, |
1326 | struct dwarf2_cu *); | |
c906108c | 1327 | |
ff39bb5e | 1328 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1329 | struct dwarf2_cu *); |
c906108c | 1330 | |
f792889a | 1331 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1332 | |
673bfd45 DE |
1333 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1334 | ||
0d5cff50 | 1335 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1336 | |
6e70227d | 1337 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1338 | const char *suffix, int physname, |
1339 | struct dwarf2_cu *cu); | |
63d06c5c | 1340 | |
e7c27a73 | 1341 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1342 | |
348e048f DE |
1343 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1344 | ||
e7c27a73 | 1345 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1346 | |
e7c27a73 | 1347 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1348 | |
96408a79 SA |
1349 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1350 | ||
71a3c369 TT |
1351 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1352 | ||
ff013f42 | 1353 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
891813be | 1354 | struct dwarf2_cu *, dwarf2_psymtab *); |
ff013f42 | 1355 | |
3a2b436a | 1356 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1357 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1358 | enum pc_bounds_kind |
1359 | { | |
e385593e | 1360 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1361 | PC_BOUNDS_NOT_PRESENT, |
1362 | ||
e385593e JK |
1363 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1364 | were present but they do not form a valid range of PC addresses. */ | |
1365 | PC_BOUNDS_INVALID, | |
1366 | ||
3a2b436a JK |
1367 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1368 | PC_BOUNDS_RANGES, | |
1369 | ||
1370 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1371 | PC_BOUNDS_HIGH_LOW, | |
1372 | }; | |
1373 | ||
1374 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1375 | CORE_ADDR *, CORE_ADDR *, | |
1376 | struct dwarf2_cu *, | |
891813be | 1377 | dwarf2_psymtab *); |
c906108c | 1378 | |
fae299cd DC |
1379 | static void get_scope_pc_bounds (struct die_info *, |
1380 | CORE_ADDR *, CORE_ADDR *, | |
1381 | struct dwarf2_cu *); | |
1382 | ||
801e3a5b JB |
1383 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1384 | CORE_ADDR, struct dwarf2_cu *); | |
1385 | ||
a14ed312 | 1386 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1387 | struct dwarf2_cu *); |
c906108c | 1388 | |
a14ed312 | 1389 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1390 | struct type *, struct dwarf2_cu *); |
c906108c | 1391 | |
a14ed312 | 1392 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1393 | struct die_info *, struct type *, |
e7c27a73 | 1394 | struct dwarf2_cu *); |
c906108c | 1395 | |
a14ed312 | 1396 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1397 | struct type *, |
1398 | struct dwarf2_cu *); | |
c906108c | 1399 | |
134d01f1 | 1400 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1401 | |
e7c27a73 | 1402 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1403 | |
e7c27a73 | 1404 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1405 | |
5d7cb8df JK |
1406 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1407 | ||
804d2729 | 1408 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1409 | |
27aa8d6a SW |
1410 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1411 | ||
74921315 KS |
1412 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1413 | ||
f55ee35c JK |
1414 | static struct type *read_module_type (struct die_info *die, |
1415 | struct dwarf2_cu *cu); | |
1416 | ||
38d518c9 | 1417 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1418 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1419 | |
134d01f1 | 1420 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1421 | |
e7c27a73 | 1422 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1423 | |
6e70227d | 1424 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1425 | struct dwarf2_cu *); |
1426 | ||
bf6af496 | 1427 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1428 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1429 | struct die_info *); |
639d11d3 | 1430 | |
dee91e82 | 1431 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1432 | const gdb_byte *info_ptr, |
1433 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1434 | struct die_info *parent); |
1435 | ||
d521ce57 TT |
1436 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1437 | struct die_info **, const gdb_byte *, | |
3e225074 | 1438 | int); |
3019eac3 | 1439 | |
d521ce57 | 1440 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
3e225074 | 1441 | struct die_info **, const gdb_byte *); |
93311388 | 1442 | |
e7c27a73 | 1443 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1444 | |
15d034d0 TT |
1445 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1446 | struct obstack *); | |
71c25dea | 1447 | |
15d034d0 | 1448 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1449 | |
15d034d0 | 1450 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1451 | struct die_info *die, |
1452 | struct dwarf2_cu *cu); | |
1453 | ||
ca69b9e6 DE |
1454 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1455 | struct dwarf2_cu *cu); | |
1456 | ||
e142c38c | 1457 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1458 | struct dwarf2_cu **); |
9219021c | 1459 | |
f39c6ffd | 1460 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1461 | |
f39c6ffd | 1462 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1463 | |
f39c6ffd | 1464 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1465 | |
a121b7c1 | 1466 | static const char *dwarf_bool_name (unsigned int); |
c906108c | 1467 | |
f39c6ffd | 1468 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1469 | |
f9aca02d | 1470 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1471 | |
d97bc12b DE |
1472 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1473 | ||
1474 | static void dump_die_for_error (struct die_info *); | |
1475 | ||
1476 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1477 | struct die_info *); | |
c906108c | 1478 | |
d97bc12b | 1479 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1480 | |
51545339 | 1481 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1482 | struct dwarf2_cu *); |
c906108c | 1483 | |
ff39bb5e | 1484 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 1485 | |
ff39bb5e | 1486 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 1487 | |
348e048f | 1488 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1489 | const struct attribute *, |
348e048f DE |
1490 | struct dwarf2_cu **); |
1491 | ||
10b3939b | 1492 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1493 | const struct attribute *, |
f2f0e013 | 1494 | struct dwarf2_cu **); |
c906108c | 1495 | |
348e048f | 1496 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1497 | const struct attribute *, |
348e048f DE |
1498 | struct dwarf2_cu **); |
1499 | ||
ac9ec31b DE |
1500 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1501 | struct dwarf2_cu *); | |
1502 | ||
1503 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1504 | const struct attribute *, |
ac9ec31b DE |
1505 | struct dwarf2_cu *); |
1506 | ||
e5fe5e75 | 1507 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1508 | |
52dc124a | 1509 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1510 | |
63e43d3a PMR |
1511 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1512 | struct die_info *die, struct dwarf2_cu *cu, | |
9a49df9d | 1513 | struct dynamic_prop *prop, struct type *type); |
63e43d3a | 1514 | |
c906108c SS |
1515 | /* memory allocation interface */ |
1516 | ||
7b5a2f43 | 1517 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1518 | |
b60c80d6 | 1519 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1520 | |
43f3e411 | 1521 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1522 | |
8cf6f0b1 TT |
1523 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1524 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1525 | const struct attribute *attr); |
8cf6f0b1 | 1526 | |
ff39bb5e | 1527 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1528 | struct symbol *sym, |
f1e6e072 TT |
1529 | struct dwarf2_cu *cu, |
1530 | int is_block); | |
4c2df51b | 1531 | |
d521ce57 TT |
1532 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1533 | const gdb_byte *info_ptr, | |
1534 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1535 | |
72bf9492 DJ |
1536 | static hashval_t partial_die_hash (const void *item); |
1537 | ||
1538 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1539 | ||
ae038cb0 | 1540 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 SM |
1541 | (sect_offset sect_off, unsigned int offset_in_dwz, |
1542 | struct dwarf2_per_objfile *dwarf2_per_objfile); | |
ae038cb0 | 1543 | |
9816fde3 | 1544 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1545 | struct die_info *comp_unit_die, |
1546 | enum language pretend_language); | |
93311388 | 1547 | |
ed2dc618 | 1548 | static void age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1549 | |
dee91e82 | 1550 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1551 | |
f792889a DJ |
1552 | static struct type *set_die_type (struct die_info *, struct type *, |
1553 | struct dwarf2_cu *); | |
1c379e20 | 1554 | |
ed2dc618 | 1555 | static void create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1556 | |
ed2dc618 | 1557 | static int create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
1fd400ff | 1558 | |
58f0c718 | 1559 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, bool, |
95554aad | 1560 | enum language); |
10b3939b | 1561 | |
95554aad TT |
1562 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1563 | enum language); | |
10b3939b | 1564 | |
f4dc4d17 DE |
1565 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1566 | enum language); | |
1567 | ||
10b3939b DJ |
1568 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1569 | struct dwarf2_per_cu_data *); | |
1570 | ||
ae038cb0 DJ |
1571 | static void dwarf2_mark (struct dwarf2_cu *); |
1572 | ||
1573 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1574 | ||
b64f50a1 | 1575 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1576 | struct dwarf2_per_cu_data *); |
673bfd45 | 1577 | |
f792889a | 1578 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1579 | |
95554aad TT |
1580 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1581 | enum language pretend_language); | |
1582 | ||
ed2dc618 | 1583 | static void process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile); |
9291a0cd | 1584 | |
b303c6f6 AB |
1585 | /* Class, the destructor of which frees all allocated queue entries. This |
1586 | will only have work to do if an error was thrown while processing the | |
1587 | dwarf. If no error was thrown then the queue entries should have all | |
1588 | been processed, and freed, as we went along. */ | |
1589 | ||
1590 | class dwarf2_queue_guard | |
1591 | { | |
1592 | public: | |
39856def TT |
1593 | explicit dwarf2_queue_guard (dwarf2_per_objfile *per_objfile) |
1594 | : m_per_objfile (per_objfile) | |
1595 | { | |
1596 | } | |
b303c6f6 AB |
1597 | |
1598 | /* Free any entries remaining on the queue. There should only be | |
1599 | entries left if we hit an error while processing the dwarf. */ | |
1600 | ~dwarf2_queue_guard () | |
1601 | { | |
39856def TT |
1602 | /* Ensure that no memory is allocated by the queue. */ |
1603 | std::queue<dwarf2_queue_item> empty; | |
1604 | std::swap (m_per_objfile->queue, empty); | |
1605 | } | |
b303c6f6 | 1606 | |
39856def | 1607 | DISABLE_COPY_AND_ASSIGN (dwarf2_queue_guard); |
b303c6f6 | 1608 | |
39856def TT |
1609 | private: |
1610 | dwarf2_per_objfile *m_per_objfile; | |
b303c6f6 AB |
1611 | }; |
1612 | ||
39856def TT |
1613 | dwarf2_queue_item::~dwarf2_queue_item () |
1614 | { | |
1615 | /* Anything still marked queued is likely to be in an | |
1616 | inconsistent state, so discard it. */ | |
1617 | if (per_cu->queued) | |
1618 | { | |
1619 | if (per_cu->cu != NULL) | |
1620 | free_one_cached_comp_unit (per_cu); | |
1621 | per_cu->queued = 0; | |
1622 | } | |
1623 | } | |
1624 | ||
d721ba37 PA |
1625 | /* The return type of find_file_and_directory. Note, the enclosed |
1626 | string pointers are only valid while this object is valid. */ | |
1627 | ||
1628 | struct file_and_directory | |
1629 | { | |
1630 | /* The filename. This is never NULL. */ | |
1631 | const char *name; | |
1632 | ||
1633 | /* The compilation directory. NULL if not known. If we needed to | |
1634 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1635 | points directly to the DW_AT_comp_dir string attribute owned by | |
1636 | the obstack that owns the DIE. */ | |
1637 | const char *comp_dir; | |
1638 | ||
1639 | /* If we needed to build a new string for comp_dir, this is what | |
1640 | owns the storage. */ | |
1641 | std::string comp_dir_storage; | |
1642 | }; | |
1643 | ||
1644 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1645 | struct dwarf2_cu *cu); | |
9291a0cd | 1646 | |
298e9637 | 1647 | static htab_up allocate_signatured_type_table (); |
1fd400ff | 1648 | |
298e9637 | 1649 | static htab_up allocate_dwo_unit_table (); |
3019eac3 | 1650 | |
57d63ce2 | 1651 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
ed2dc618 SM |
1652 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
1653 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 1654 | ULONGEST signature, int is_debug_types); |
a2ce51a0 | 1655 | |
ed2dc618 SM |
1656 | static struct dwp_file *get_dwp_file |
1657 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
a2ce51a0 | 1658 | |
3019eac3 | 1659 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 1660 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
1661 | |
1662 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 1663 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 1664 | |
89e63ee4 DE |
1665 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
1666 | ||
263db9a1 TT |
1667 | /* A unique pointer to a dwo_file. */ |
1668 | ||
51ac9db5 | 1669 | typedef std::unique_ptr<struct dwo_file> dwo_file_up; |
263db9a1 | 1670 | |
ed2dc618 | 1671 | static void process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile); |
95554aad | 1672 | |
1b80a9fa | 1673 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1674 | |
1675 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1676 | \f |
1677 | /* Various complaints about symbol reading that don't abort the process. */ | |
1678 | ||
1679 | static void | |
1680 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
1681 | { | |
b98664d3 | 1682 | complaint (_("statement list doesn't fit in .debug_line section")); |
4390d890 DE |
1683 | } |
1684 | ||
1685 | static void | |
1686 | dwarf2_debug_line_missing_file_complaint (void) | |
1687 | { | |
b98664d3 | 1688 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
1689 | } |
1690 | ||
1691 | static void | |
1692 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1693 | { | |
b98664d3 | 1694 | complaint (_(".debug_line section has line " |
4390d890 DE |
1695 | "program sequence without an end")); |
1696 | } | |
1697 | ||
1698 | static void | |
1699 | dwarf2_complex_location_expr_complaint (void) | |
1700 | { | |
b98664d3 | 1701 | complaint (_("location expression too complex")); |
4390d890 DE |
1702 | } |
1703 | ||
1704 | static void | |
1705 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1706 | int arg3) | |
1707 | { | |
b98664d3 | 1708 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
1709 | arg1, arg2, arg3); |
1710 | } | |
1711 | ||
1712 | static void | |
1713 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
1714 | { | |
b98664d3 | 1715 | complaint (_("debug info runs off end of %s section" |
4390d890 | 1716 | " [in module %s]"), |
96b79293 TT |
1717 | section->get_name (), |
1718 | section->get_file_name ()); | |
4390d890 | 1719 | } |
1b80a9fa | 1720 | |
4390d890 DE |
1721 | static void |
1722 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
1723 | { | |
b98664d3 | 1724 | complaint (_("macro debug info contains a " |
4390d890 DE |
1725 | "malformed macro definition:\n`%s'"), |
1726 | arg1); | |
1727 | } | |
1728 | ||
1729 | static void | |
1730 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1731 | { | |
b98664d3 | 1732 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
1733 | arg1, arg2); |
1734 | } | |
527f3840 JK |
1735 | |
1736 | /* Hash function for line_header_hash. */ | |
1737 | ||
1738 | static hashval_t | |
1739 | line_header_hash (const struct line_header *ofs) | |
1740 | { | |
9c541725 | 1741 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
1742 | } |
1743 | ||
1744 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
1745 | ||
1746 | static hashval_t | |
1747 | line_header_hash_voidp (const void *item) | |
1748 | { | |
9a3c8263 | 1749 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
1750 | |
1751 | return line_header_hash (ofs); | |
1752 | } | |
1753 | ||
1754 | /* Equality function for line_header_hash. */ | |
1755 | ||
1756 | static int | |
1757 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
1758 | { | |
9a3c8263 SM |
1759 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
1760 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 1761 | |
9c541725 | 1762 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
1763 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
1764 | } | |
1765 | ||
4390d890 | 1766 | \f |
9291a0cd | 1767 | |
330cdd98 PA |
1768 | /* See declaration. */ |
1769 | ||
1770 | dwarf2_per_objfile::dwarf2_per_objfile (struct objfile *objfile_, | |
4b610737 TT |
1771 | const dwarf2_debug_sections *names, |
1772 | bool can_copy_) | |
1773 | : objfile (objfile_), | |
1774 | can_copy (can_copy_) | |
330cdd98 PA |
1775 | { |
1776 | if (names == NULL) | |
1777 | names = &dwarf2_elf_names; | |
1778 | ||
1779 | bfd *obfd = objfile->obfd; | |
1780 | ||
1781 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) | |
1782 | locate_sections (obfd, sec, *names); | |
1783 | } | |
1784 | ||
1785 | dwarf2_per_objfile::~dwarf2_per_objfile () | |
1786 | { | |
1787 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
1788 | free_cached_comp_units (); | |
1789 | ||
b76e467d | 1790 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
ae640021 | 1791 | per_cu->imported_symtabs_free (); |
fc8e7e75 | 1792 | |
b2bdb8cf | 1793 | for (signatured_type *sig_type : all_type_units) |
ae640021 | 1794 | sig_type->per_cu.imported_symtabs_free (); |
fc8e7e75 | 1795 | |
330cdd98 PA |
1796 | /* Everything else should be on the objfile obstack. */ |
1797 | } | |
1798 | ||
1799 | /* See declaration. */ | |
1800 | ||
1801 | void | |
1802 | dwarf2_per_objfile::free_cached_comp_units () | |
1803 | { | |
1804 | dwarf2_per_cu_data *per_cu = read_in_chain; | |
1805 | dwarf2_per_cu_data **last_chain = &read_in_chain; | |
1806 | while (per_cu != NULL) | |
1807 | { | |
1808 | dwarf2_per_cu_data *next_cu = per_cu->cu->read_in_chain; | |
1809 | ||
fcd3b13d | 1810 | delete per_cu->cu; |
330cdd98 PA |
1811 | *last_chain = next_cu; |
1812 | per_cu = next_cu; | |
1813 | } | |
1814 | } | |
1815 | ||
11ed8cad TT |
1816 | /* A helper class that calls free_cached_comp_units on |
1817 | destruction. */ | |
1818 | ||
1819 | class free_cached_comp_units | |
1820 | { | |
1821 | public: | |
1822 | ||
1823 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
1824 | : m_per_objfile (per_objfile) | |
1825 | { | |
1826 | } | |
1827 | ||
1828 | ~free_cached_comp_units () | |
1829 | { | |
1830 | m_per_objfile->free_cached_comp_units (); | |
1831 | } | |
1832 | ||
1833 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
1834 | ||
1835 | private: | |
1836 | ||
1837 | dwarf2_per_objfile *m_per_objfile; | |
1838 | }; | |
1839 | ||
c906108c | 1840 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1841 | information and return true if we have enough to do something. |
1842 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
4b610737 TT |
1843 | ELF names are used. CAN_COPY is true for formats where symbol |
1844 | interposition is possible and so symbol values must follow copy | |
1845 | relocation rules. */ | |
c906108c SS |
1846 | |
1847 | int | |
251d32d9 | 1848 | dwarf2_has_info (struct objfile *objfile, |
4b610737 TT |
1849 | const struct dwarf2_debug_sections *names, |
1850 | bool can_copy) | |
c906108c | 1851 | { |
97cbe998 SDJ |
1852 | if (objfile->flags & OBJF_READNEVER) |
1853 | return 0; | |
1854 | ||
ed2dc618 SM |
1855 | struct dwarf2_per_objfile *dwarf2_per_objfile |
1856 | = get_dwarf2_per_objfile (objfile); | |
1857 | ||
1858 | if (dwarf2_per_objfile == NULL) | |
5bfd760d | 1859 | dwarf2_per_objfile = dwarf2_objfile_data_key.emplace (objfile, objfile, |
4b610737 TT |
1860 | names, |
1861 | can_copy); | |
5bfd760d | 1862 | |
73869dc2 | 1863 | return (!dwarf2_per_objfile->info.is_virtual |
049412e3 | 1864 | && dwarf2_per_objfile->info.s.section != NULL |
73869dc2 | 1865 | && !dwarf2_per_objfile->abbrev.is_virtual |
049412e3 | 1866 | && dwarf2_per_objfile->abbrev.s.section != NULL); |
73869dc2 DE |
1867 | } |
1868 | ||
251d32d9 TG |
1869 | /* When loading sections, we look either for uncompressed section or for |
1870 | compressed section names. */ | |
233a11ab CS |
1871 | |
1872 | static int | |
251d32d9 TG |
1873 | section_is_p (const char *section_name, |
1874 | const struct dwarf2_section_names *names) | |
233a11ab | 1875 | { |
251d32d9 TG |
1876 | if (names->normal != NULL |
1877 | && strcmp (section_name, names->normal) == 0) | |
1878 | return 1; | |
1879 | if (names->compressed != NULL | |
1880 | && strcmp (section_name, names->compressed) == 0) | |
1881 | return 1; | |
1882 | return 0; | |
233a11ab CS |
1883 | } |
1884 | ||
330cdd98 | 1885 | /* See declaration. */ |
c906108c | 1886 | |
330cdd98 PA |
1887 | void |
1888 | dwarf2_per_objfile::locate_sections (bfd *abfd, asection *sectp, | |
1889 | const dwarf2_debug_sections &names) | |
c906108c | 1890 | { |
fd361982 | 1891 | flagword aflag = bfd_section_flags (sectp); |
251d32d9 | 1892 | |
dc7650b8 JK |
1893 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
1894 | { | |
1895 | } | |
950b7495 KS |
1896 | else if (elf_section_data (sectp)->this_hdr.sh_size |
1897 | > bfd_get_file_size (abfd)) | |
1898 | { | |
1899 | bfd_size_type size = elf_section_data (sectp)->this_hdr.sh_size; | |
1900 | warning (_("Discarding section %s which has a section size (%s" | |
1901 | ") larger than the file size [in module %s]"), | |
1902 | bfd_section_name (sectp), phex_nz (size, sizeof (size)), | |
1903 | bfd_get_filename (abfd)); | |
1904 | } | |
330cdd98 | 1905 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 1906 | { |
330cdd98 | 1907 | this->info.s.section = sectp; |
fd361982 | 1908 | this->info.size = bfd_section_size (sectp); |
c906108c | 1909 | } |
330cdd98 | 1910 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 1911 | { |
330cdd98 | 1912 | this->abbrev.s.section = sectp; |
fd361982 | 1913 | this->abbrev.size = bfd_section_size (sectp); |
c906108c | 1914 | } |
330cdd98 | 1915 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 1916 | { |
330cdd98 | 1917 | this->line.s.section = sectp; |
fd361982 | 1918 | this->line.size = bfd_section_size (sectp); |
c906108c | 1919 | } |
330cdd98 | 1920 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 1921 | { |
330cdd98 | 1922 | this->loc.s.section = sectp; |
fd361982 | 1923 | this->loc.size = bfd_section_size (sectp); |
c906108c | 1924 | } |
330cdd98 | 1925 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 1926 | { |
330cdd98 | 1927 | this->loclists.s.section = sectp; |
fd361982 | 1928 | this->loclists.size = bfd_section_size (sectp); |
43988095 | 1929 | } |
330cdd98 | 1930 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 1931 | { |
330cdd98 | 1932 | this->macinfo.s.section = sectp; |
fd361982 | 1933 | this->macinfo.size = bfd_section_size (sectp); |
c906108c | 1934 | } |
330cdd98 | 1935 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 1936 | { |
330cdd98 | 1937 | this->macro.s.section = sectp; |
fd361982 | 1938 | this->macro.size = bfd_section_size (sectp); |
cf2c3c16 | 1939 | } |
330cdd98 | 1940 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 1941 | { |
330cdd98 | 1942 | this->str.s.section = sectp; |
fd361982 | 1943 | this->str.size = bfd_section_size (sectp); |
c906108c | 1944 | } |
18a8505e AT |
1945 | else if (section_is_p (sectp->name, &names.str_offsets)) |
1946 | { | |
1947 | this->str_offsets.s.section = sectp; | |
1948 | this->str_offsets.size = bfd_section_size (sectp); | |
1949 | } | |
330cdd98 | 1950 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 1951 | { |
330cdd98 | 1952 | this->line_str.s.section = sectp; |
fd361982 | 1953 | this->line_str.size = bfd_section_size (sectp); |
43988095 | 1954 | } |
330cdd98 | 1955 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 1956 | { |
330cdd98 | 1957 | this->addr.s.section = sectp; |
fd361982 | 1958 | this->addr.size = bfd_section_size (sectp); |
3019eac3 | 1959 | } |
330cdd98 | 1960 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 1961 | { |
330cdd98 | 1962 | this->frame.s.section = sectp; |
fd361982 | 1963 | this->frame.size = bfd_section_size (sectp); |
b6af0555 | 1964 | } |
330cdd98 | 1965 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 1966 | { |
330cdd98 | 1967 | this->eh_frame.s.section = sectp; |
fd361982 | 1968 | this->eh_frame.size = bfd_section_size (sectp); |
b6af0555 | 1969 | } |
330cdd98 | 1970 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 1971 | { |
330cdd98 | 1972 | this->ranges.s.section = sectp; |
fd361982 | 1973 | this->ranges.size = bfd_section_size (sectp); |
af34e669 | 1974 | } |
330cdd98 | 1975 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 1976 | { |
330cdd98 | 1977 | this->rnglists.s.section = sectp; |
fd361982 | 1978 | this->rnglists.size = bfd_section_size (sectp); |
43988095 | 1979 | } |
330cdd98 | 1980 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 1981 | { |
8b70b953 TT |
1982 | struct dwarf2_section_info type_section; |
1983 | ||
1984 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 1985 | type_section.s.section = sectp; |
fd361982 | 1986 | type_section.size = bfd_section_size (sectp); |
8b70b953 | 1987 | |
fd5866f6 | 1988 | this->types.push_back (type_section); |
348e048f | 1989 | } |
330cdd98 | 1990 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 1991 | { |
330cdd98 | 1992 | this->gdb_index.s.section = sectp; |
fd361982 | 1993 | this->gdb_index.size = bfd_section_size (sectp); |
9291a0cd | 1994 | } |
927aa2e7 JK |
1995 | else if (section_is_p (sectp->name, &names.debug_names)) |
1996 | { | |
1997 | this->debug_names.s.section = sectp; | |
fd361982 | 1998 | this->debug_names.size = bfd_section_size (sectp); |
927aa2e7 JK |
1999 | } |
2000 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2001 | { | |
2002 | this->debug_aranges.s.section = sectp; | |
fd361982 | 2003 | this->debug_aranges.size = bfd_section_size (sectp); |
927aa2e7 | 2004 | } |
dce234bc | 2005 | |
fd361982 AM |
2006 | if ((bfd_section_flags (sectp) & (SEC_LOAD | SEC_ALLOC)) |
2007 | && bfd_section_vma (sectp) == 0) | |
330cdd98 | 2008 | this->has_section_at_zero = true; |
c906108c SS |
2009 | } |
2010 | ||
dce234bc | 2011 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2012 | SECTION_NAME. */ |
af34e669 | 2013 | |
dce234bc | 2014 | void |
3017a003 TG |
2015 | dwarf2_get_section_info (struct objfile *objfile, |
2016 | enum dwarf2_section_enum sect, | |
d521ce57 | 2017 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2018 | bfd_size_type *sizep) |
2019 | { | |
5bfd760d | 2020 | struct dwarf2_per_objfile *data = dwarf2_objfile_data_key.get (objfile); |
dce234bc | 2021 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2022 | |
2023 | /* We may see an objfile without any DWARF, in which case we just | |
2024 | return nothing. */ | |
2025 | if (data == NULL) | |
2026 | { | |
2027 | *sectp = NULL; | |
2028 | *bufp = NULL; | |
2029 | *sizep = 0; | |
2030 | return; | |
2031 | } | |
3017a003 TG |
2032 | switch (sect) |
2033 | { | |
2034 | case DWARF2_DEBUG_FRAME: | |
2035 | info = &data->frame; | |
2036 | break; | |
2037 | case DWARF2_EH_FRAME: | |
2038 | info = &data->eh_frame; | |
2039 | break; | |
2040 | default: | |
2041 | gdb_assert_not_reached ("unexpected section"); | |
2042 | } | |
dce234bc | 2043 | |
96b79293 | 2044 | info->read (objfile); |
dce234bc | 2045 | |
96b79293 | 2046 | *sectp = info->get_bfd_section (); |
dce234bc PP |
2047 | *bufp = info->buffer; |
2048 | *sizep = info->size; | |
2049 | } | |
2050 | ||
36586728 TT |
2051 | /* A helper function to find the sections for a .dwz file. */ |
2052 | ||
2053 | static void | |
2054 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2055 | { | |
9a3c8263 | 2056 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2057 | |
2058 | /* Note that we only support the standard ELF names, because .dwz | |
2059 | is ELF-only (at the time of writing). */ | |
2060 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2061 | { | |
049412e3 | 2062 | dwz_file->abbrev.s.section = sectp; |
fd361982 | 2063 | dwz_file->abbrev.size = bfd_section_size (sectp); |
36586728 TT |
2064 | } |
2065 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2066 | { | |
049412e3 | 2067 | dwz_file->info.s.section = sectp; |
fd361982 | 2068 | dwz_file->info.size = bfd_section_size (sectp); |
36586728 TT |
2069 | } |
2070 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2071 | { | |
049412e3 | 2072 | dwz_file->str.s.section = sectp; |
fd361982 | 2073 | dwz_file->str.size = bfd_section_size (sectp); |
36586728 TT |
2074 | } |
2075 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2076 | { | |
049412e3 | 2077 | dwz_file->line.s.section = sectp; |
fd361982 | 2078 | dwz_file->line.size = bfd_section_size (sectp); |
36586728 TT |
2079 | } |
2080 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2081 | { | |
049412e3 | 2082 | dwz_file->macro.s.section = sectp; |
fd361982 | 2083 | dwz_file->macro.size = bfd_section_size (sectp); |
36586728 | 2084 | } |
2ec9a5e0 TT |
2085 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2086 | { | |
049412e3 | 2087 | dwz_file->gdb_index.s.section = sectp; |
fd361982 | 2088 | dwz_file->gdb_index.size = bfd_section_size (sectp); |
2ec9a5e0 | 2089 | } |
927aa2e7 JK |
2090 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2091 | { | |
2092 | dwz_file->debug_names.s.section = sectp; | |
fd361982 | 2093 | dwz_file->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2094 | } |
36586728 TT |
2095 | } |
2096 | ||
c4973306 | 2097 | /* See dwarf2read.h. */ |
36586728 | 2098 | |
c4973306 | 2099 | struct dwz_file * |
ed2dc618 | 2100 | dwarf2_get_dwz_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 2101 | { |
36586728 | 2102 | const char *filename; |
acd13123 | 2103 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2104 | size_t buildid_len; |
2105 | bfd_byte *buildid; | |
36586728 TT |
2106 | |
2107 | if (dwarf2_per_objfile->dwz_file != NULL) | |
7ff8cb8c | 2108 | return dwarf2_per_objfile->dwz_file.get (); |
36586728 | 2109 | |
4db1a1dc | 2110 | bfd_set_error (bfd_error_no_error); |
791afaa2 TT |
2111 | gdb::unique_xmalloc_ptr<char> data |
2112 | (bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
2113 | &buildid_len_arg, &buildid)); | |
4db1a1dc TT |
2114 | if (data == NULL) |
2115 | { | |
2116 | if (bfd_get_error () == bfd_error_no_error) | |
2117 | return NULL; | |
2118 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2119 | bfd_errmsg (bfd_get_error ())); | |
2120 | } | |
791afaa2 TT |
2121 | |
2122 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2123 | |
acd13123 TT |
2124 | buildid_len = (size_t) buildid_len_arg; |
2125 | ||
791afaa2 | 2126 | filename = data.get (); |
d721ba37 PA |
2127 | |
2128 | std::string abs_storage; | |
36586728 TT |
2129 | if (!IS_ABSOLUTE_PATH (filename)) |
2130 | { | |
14278e1f TT |
2131 | gdb::unique_xmalloc_ptr<char> abs |
2132 | = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); | |
36586728 | 2133 | |
14278e1f | 2134 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2135 | filename = abs_storage.c_str (); |
36586728 TT |
2136 | } |
2137 | ||
dc294be5 TT |
2138 | /* First try the file name given in the section. If that doesn't |
2139 | work, try to use the build-id instead. */ | |
192b62ce | 2140 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget, -1)); |
dc294be5 | 2141 | if (dwz_bfd != NULL) |
36586728 | 2142 | { |
192b62ce | 2143 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
0f58c9e8 | 2144 | dwz_bfd.reset (nullptr); |
36586728 TT |
2145 | } |
2146 | ||
dc294be5 TT |
2147 | if (dwz_bfd == NULL) |
2148 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2149 | ||
2150 | if (dwz_bfd == NULL) | |
2151 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2152 | objfile_name (dwarf2_per_objfile->objfile)); | |
2153 | ||
7ff8cb8c TT |
2154 | std::unique_ptr<struct dwz_file> result |
2155 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2156 | |
7ff8cb8c TT |
2157 | bfd_map_over_sections (result->dwz_bfd.get (), locate_dwz_sections, |
2158 | result.get ()); | |
36586728 | 2159 | |
7ff8cb8c TT |
2160 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, |
2161 | result->dwz_bfd.get ()); | |
2162 | dwarf2_per_objfile->dwz_file = std::move (result); | |
2163 | return dwarf2_per_objfile->dwz_file.get (); | |
36586728 | 2164 | } |
9291a0cd | 2165 | \f |
7b9f3c50 DE |
2166 | /* DWARF quick_symbols_functions support. */ |
2167 | ||
2168 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2169 | unique line tables, so we maintain a separate table of all .debug_line | |
2170 | derived entries to support the sharing. | |
2171 | All the quick functions need is the list of file names. We discard the | |
2172 | line_header when we're done and don't need to record it here. */ | |
2173 | struct quick_file_names | |
2174 | { | |
094b34ac DE |
2175 | /* The data used to construct the hash key. */ |
2176 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2177 | |
2178 | /* The number of entries in file_names, real_names. */ | |
2179 | unsigned int num_file_names; | |
2180 | ||
2181 | /* The file names from the line table, after being run through | |
2182 | file_full_name. */ | |
2183 | const char **file_names; | |
2184 | ||
2185 | /* The file names from the line table after being run through | |
2186 | gdb_realpath. These are computed lazily. */ | |
2187 | const char **real_names; | |
2188 | }; | |
2189 | ||
2190 | /* When using the index (and thus not using psymtabs), each CU has an | |
2191 | object of this type. This is used to hold information needed by | |
2192 | the various "quick" methods. */ | |
2193 | struct dwarf2_per_cu_quick_data | |
2194 | { | |
2195 | /* The file table. This can be NULL if there was no file table | |
2196 | or it's currently not read in. | |
2197 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2198 | struct quick_file_names *file_names; | |
2199 | ||
2200 | /* The corresponding symbol table. This is NULL if symbols for this | |
2201 | CU have not yet been read. */ | |
43f3e411 | 2202 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
2203 | |
2204 | /* A temporary mark bit used when iterating over all CUs in | |
2205 | expand_symtabs_matching. */ | |
2206 | unsigned int mark : 1; | |
2207 | ||
2208 | /* True if we've tried to read the file table and found there isn't one. | |
2209 | There will be no point in trying to read it again next time. */ | |
2210 | unsigned int no_file_data : 1; | |
2211 | }; | |
2212 | ||
094b34ac DE |
2213 | /* Utility hash function for a stmt_list_hash. */ |
2214 | ||
2215 | static hashval_t | |
2216 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2217 | { | |
2218 | hashval_t v = 0; | |
2219 | ||
2220 | if (stmt_list_hash->dwo_unit != NULL) | |
2221 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2222 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2223 | return v; |
2224 | } | |
2225 | ||
2226 | /* Utility equality function for a stmt_list_hash. */ | |
2227 | ||
2228 | static int | |
2229 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2230 | const struct stmt_list_hash *rhs) | |
2231 | { | |
2232 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2233 | return 0; | |
2234 | if (lhs->dwo_unit != NULL | |
2235 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2236 | return 0; | |
2237 | ||
9c541725 | 2238 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2239 | } |
2240 | ||
7b9f3c50 DE |
2241 | /* Hash function for a quick_file_names. */ |
2242 | ||
2243 | static hashval_t | |
2244 | hash_file_name_entry (const void *e) | |
2245 | { | |
9a3c8263 SM |
2246 | const struct quick_file_names *file_data |
2247 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2248 | |
094b34ac | 2249 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2250 | } |
2251 | ||
2252 | /* Equality function for a quick_file_names. */ | |
2253 | ||
2254 | static int | |
2255 | eq_file_name_entry (const void *a, const void *b) | |
2256 | { | |
9a3c8263 SM |
2257 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2258 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2259 | |
094b34ac | 2260 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2261 | } |
2262 | ||
2263 | /* Delete function for a quick_file_names. */ | |
2264 | ||
2265 | static void | |
2266 | delete_file_name_entry (void *e) | |
2267 | { | |
9a3c8263 | 2268 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2269 | int i; |
2270 | ||
2271 | for (i = 0; i < file_data->num_file_names; ++i) | |
2272 | { | |
2273 | xfree ((void*) file_data->file_names[i]); | |
2274 | if (file_data->real_names) | |
2275 | xfree ((void*) file_data->real_names[i]); | |
2276 | } | |
2277 | ||
2278 | /* The space for the struct itself lives on objfile_obstack, | |
2279 | so we don't free it here. */ | |
2280 | } | |
2281 | ||
2282 | /* Create a quick_file_names hash table. */ | |
2283 | ||
5895093f | 2284 | static htab_up |
7b9f3c50 DE |
2285 | create_quick_file_names_table (unsigned int nr_initial_entries) |
2286 | { | |
5895093f TT |
2287 | return htab_up (htab_create_alloc (nr_initial_entries, |
2288 | hash_file_name_entry, eq_file_name_entry, | |
2289 | delete_file_name_entry, xcalloc, xfree)); | |
7b9f3c50 | 2290 | } |
9291a0cd | 2291 | |
918dd910 JK |
2292 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2293 | have to be created afterwards. You should call age_cached_comp_units after | |
2294 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2295 | ||
2296 | static void | |
58f0c718 | 2297 | load_cu (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
918dd910 | 2298 | { |
3019eac3 | 2299 | if (per_cu->is_debug_types) |
e5fe5e75 | 2300 | load_full_type_unit (per_cu); |
918dd910 | 2301 | else |
58f0c718 | 2302 | load_full_comp_unit (per_cu, skip_partial, language_minimal); |
918dd910 | 2303 | |
cc12ce38 DE |
2304 | if (per_cu->cu == NULL) |
2305 | return; /* Dummy CU. */ | |
2dc860c0 DE |
2306 | |
2307 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2308 | } |
2309 | ||
a0f42c21 | 2310 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2311 | |
9291a0cd | 2312 | static void |
58f0c718 | 2313 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2314 | { |
ed2dc618 | 2315 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9291a0cd | 2316 | |
f4dc4d17 DE |
2317 | /* Skip type_unit_groups, reading the type units they contain |
2318 | is handled elsewhere. */ | |
197400e8 | 2319 | if (per_cu->type_unit_group_p ()) |
f4dc4d17 DE |
2320 | return; |
2321 | ||
b303c6f6 AB |
2322 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2323 | the queue. After this point we're guaranteed to leave this function | |
2324 | with the dwarf queue empty. */ | |
39856def | 2325 | dwarf2_queue_guard q_guard (dwarf2_per_objfile); |
9291a0cd | 2326 | |
95554aad | 2327 | if (dwarf2_per_objfile->using_index |
43f3e411 | 2328 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
2329 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
2330 | { | |
2331 | queue_comp_unit (per_cu, language_minimal); | |
58f0c718 | 2332 | load_cu (per_cu, skip_partial); |
89e63ee4 DE |
2333 | |
2334 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2335 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2336 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2337 | if (!per_cu->is_debug_types | |
cc12ce38 | 2338 | && per_cu->cu != NULL |
89e63ee4 DE |
2339 | && per_cu->cu->dwo_unit != NULL |
2340 | && dwarf2_per_objfile->index_table != NULL | |
2341 | && dwarf2_per_objfile->index_table->version <= 7 | |
2342 | /* DWP files aren't supported yet. */ | |
ed2dc618 | 2343 | && get_dwp_file (dwarf2_per_objfile) == NULL) |
89e63ee4 | 2344 | queue_and_load_all_dwo_tus (per_cu); |
95554aad | 2345 | } |
9291a0cd | 2346 | |
ed2dc618 | 2347 | process_queue (dwarf2_per_objfile); |
9291a0cd TT |
2348 | |
2349 | /* Age the cache, releasing compilation units that have not | |
2350 | been used recently. */ | |
ed2dc618 | 2351 | age_cached_comp_units (dwarf2_per_objfile); |
9291a0cd TT |
2352 | } |
2353 | ||
2354 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2355 | the objfile from which this CU came. Returns the resulting symbol | |
2356 | table. */ | |
2fdf6df6 | 2357 | |
43f3e411 | 2358 | static struct compunit_symtab * |
58f0c718 | 2359 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2360 | { |
ed2dc618 SM |
2361 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
2362 | ||
95554aad | 2363 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 2364 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd | 2365 | { |
11ed8cad | 2366 | free_cached_comp_units freer (dwarf2_per_objfile); |
c83dd867 | 2367 | scoped_restore decrementer = increment_reading_symtab (); |
58f0c718 | 2368 | dw2_do_instantiate_symtab (per_cu, skip_partial); |
ed2dc618 | 2369 | process_cu_includes (dwarf2_per_objfile); |
9291a0cd | 2370 | } |
f194fefb | 2371 | |
43f3e411 | 2372 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
2373 | } |
2374 | ||
ff4c9fec | 2375 | /* See declaration. */ |
f4dc4d17 | 2376 | |
ff4c9fec SM |
2377 | dwarf2_per_cu_data * |
2378 | dwarf2_per_objfile::get_cutu (int index) | |
2379 | { | |
b76e467d | 2380 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2381 | { |
b76e467d | 2382 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2383 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2384 | return &this->all_type_units[index]->per_cu; |
2385 | } | |
f4dc4d17 | 2386 | |
ff4c9fec SM |
2387 | return this->all_comp_units[index]; |
2388 | } | |
f4dc4d17 | 2389 | |
ff4c9fec | 2390 | /* See declaration. */ |
2fdf6df6 | 2391 | |
ff4c9fec SM |
2392 | dwarf2_per_cu_data * |
2393 | dwarf2_per_objfile::get_cu (int index) | |
1fd400ff | 2394 | { |
b76e467d | 2395 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2396 | |
ff4c9fec | 2397 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2398 | } |
2399 | ||
ff4c9fec | 2400 | /* See declaration. */ |
f4dc4d17 | 2401 | |
ff4c9fec SM |
2402 | signatured_type * |
2403 | dwarf2_per_objfile::get_tu (int index) | |
f4dc4d17 | 2404 | { |
b2bdb8cf | 2405 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2406 | |
ff4c9fec | 2407 | return this->all_type_units[index]; |
1fd400ff TT |
2408 | } |
2409 | ||
4b514bc8 JK |
2410 | /* Return a new dwarf2_per_cu_data allocated on OBJFILE's |
2411 | objfile_obstack, and constructed with the specified field | |
2412 | values. */ | |
2413 | ||
2414 | static dwarf2_per_cu_data * | |
ed2dc618 | 2415 | create_cu_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4b514bc8 JK |
2416 | struct dwarf2_section_info *section, |
2417 | int is_dwz, | |
2418 | sect_offset sect_off, ULONGEST length) | |
2419 | { | |
ed2dc618 | 2420 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4b514bc8 JK |
2421 | dwarf2_per_cu_data *the_cu |
2422 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2423 | struct dwarf2_per_cu_data); | |
2424 | the_cu->sect_off = sect_off; | |
2425 | the_cu->length = length; | |
e3b94546 | 2426 | the_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
4b514bc8 JK |
2427 | the_cu->section = section; |
2428 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2429 | struct dwarf2_per_cu_quick_data); | |
2430 | the_cu->is_dwz = is_dwz; | |
2431 | return the_cu; | |
2432 | } | |
2433 | ||
2ec9a5e0 TT |
2434 | /* A helper for create_cus_from_index that handles a given list of |
2435 | CUs. */ | |
2fdf6df6 | 2436 | |
74a0d9f6 | 2437 | static void |
12359b5e | 2438 | create_cus_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
2439 | const gdb_byte *cu_list, offset_type n_elements, |
2440 | struct dwarf2_section_info *section, | |
b76e467d | 2441 | int is_dwz) |
9291a0cd | 2442 | { |
12359b5e | 2443 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2444 | { |
74a0d9f6 | 2445 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2446 | |
2447 | sect_offset sect_off | |
2448 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2449 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2450 | cu_list += 2 * 8; |
2451 | ||
b76e467d | 2452 | dwarf2_per_cu_data *per_cu |
ed2dc618 SM |
2453 | = create_cu_from_index_list (dwarf2_per_objfile, section, is_dwz, |
2454 | sect_off, length); | |
b76e467d | 2455 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
9291a0cd | 2456 | } |
9291a0cd TT |
2457 | } |
2458 | ||
2ec9a5e0 | 2459 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 2460 | the CU objects for this objfile. */ |
2ec9a5e0 | 2461 | |
74a0d9f6 | 2462 | static void |
12359b5e | 2463 | create_cus_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
2464 | const gdb_byte *cu_list, offset_type cu_list_elements, |
2465 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2466 | { | |
b76e467d SM |
2467 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
2468 | dwarf2_per_objfile->all_comp_units.reserve | |
2469 | ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 2470 | |
12359b5e | 2471 | create_cus_from_index_list (dwarf2_per_objfile, cu_list, cu_list_elements, |
b76e467d | 2472 | &dwarf2_per_objfile->info, 0); |
2ec9a5e0 TT |
2473 | |
2474 | if (dwz_elements == 0) | |
74a0d9f6 | 2475 | return; |
2ec9a5e0 | 2476 | |
12359b5e SM |
2477 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
2478 | create_cus_from_index_list (dwarf2_per_objfile, dwz_list, dwz_elements, | |
b76e467d | 2479 | &dwz->info, 1); |
2ec9a5e0 TT |
2480 | } |
2481 | ||
1fd400ff | 2482 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2483 | |
74a0d9f6 | 2484 | static void |
12359b5e SM |
2485 | create_signatured_type_table_from_index |
2486 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
2487 | struct dwarf2_section_info *section, | |
2488 | const gdb_byte *bytes, | |
2489 | offset_type elements) | |
1fd400ff | 2490 | { |
12359b5e | 2491 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
1fd400ff | 2492 | |
b2bdb8cf SM |
2493 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
2494 | dwarf2_per_objfile->all_type_units.reserve (elements / 3); | |
1fd400ff | 2495 | |
298e9637 | 2496 | htab_up sig_types_hash = allocate_signatured_type_table (); |
1fd400ff | 2497 | |
12359b5e | 2498 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 2499 | { |
52dc124a | 2500 | struct signatured_type *sig_type; |
9c541725 | 2501 | ULONGEST signature; |
1fd400ff | 2502 | void **slot; |
9c541725 | 2503 | cu_offset type_offset_in_tu; |
1fd400ff | 2504 | |
74a0d9f6 | 2505 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2506 | sect_offset sect_off |
2507 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2508 | type_offset_in_tu | |
2509 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
2510 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2511 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2512 | bytes += 3 * 8; | |
2513 | ||
52dc124a | 2514 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2515 | struct signatured_type); |
52dc124a | 2516 | sig_type->signature = signature; |
9c541725 | 2517 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 2518 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 2519 | sig_type->per_cu.section = section; |
9c541725 | 2520 | sig_type->per_cu.sect_off = sect_off; |
e3b94546 | 2521 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
52dc124a | 2522 | sig_type->per_cu.v.quick |
1fd400ff TT |
2523 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2524 | struct dwarf2_per_cu_quick_data); | |
2525 | ||
b0b6a987 | 2526 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
52dc124a | 2527 | *slot = sig_type; |
1fd400ff | 2528 | |
b2bdb8cf | 2529 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
1fd400ff TT |
2530 | } |
2531 | ||
b0b6a987 | 2532 | dwarf2_per_objfile->signatured_types = std::move (sig_types_hash); |
1fd400ff TT |
2533 | } |
2534 | ||
927aa2e7 JK |
2535 | /* Create the signatured type hash table from .debug_names. */ |
2536 | ||
2537 | static void | |
2538 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 2539 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
2540 | const mapped_debug_names &map, |
2541 | struct dwarf2_section_info *section, | |
2542 | struct dwarf2_section_info *abbrev_section) | |
2543 | { | |
ed2dc618 SM |
2544 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2545 | ||
96b79293 TT |
2546 | section->read (objfile); |
2547 | abbrev_section->read (objfile); | |
927aa2e7 | 2548 | |
b2bdb8cf SM |
2549 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
2550 | dwarf2_per_objfile->all_type_units.reserve (map.tu_count); | |
927aa2e7 | 2551 | |
298e9637 | 2552 | htab_up sig_types_hash = allocate_signatured_type_table (); |
927aa2e7 JK |
2553 | |
2554 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
2555 | { | |
2556 | struct signatured_type *sig_type; | |
927aa2e7 | 2557 | void **slot; |
927aa2e7 JK |
2558 | |
2559 | sect_offset sect_off | |
2560 | = (sect_offset) (extract_unsigned_integer | |
2561 | (map.tu_table_reordered + i * map.offset_size, | |
2562 | map.offset_size, | |
2563 | map.dwarf5_byte_order)); | |
2564 | ||
2565 | comp_unit_head cu_header; | |
ed2dc618 SM |
2566 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
2567 | abbrev_section, | |
927aa2e7 JK |
2568 | section->buffer + to_underlying (sect_off), |
2569 | rcuh_kind::TYPE); | |
2570 | ||
2571 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2572 | struct signatured_type); | |
2573 | sig_type->signature = cu_header.signature; | |
2574 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
2575 | sig_type->per_cu.is_debug_types = 1; | |
2576 | sig_type->per_cu.section = section; | |
2577 | sig_type->per_cu.sect_off = sect_off; | |
e3b94546 | 2578 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
927aa2e7 JK |
2579 | sig_type->per_cu.v.quick |
2580 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2581 | struct dwarf2_per_cu_quick_data); | |
2582 | ||
b0b6a987 | 2583 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
927aa2e7 JK |
2584 | *slot = sig_type; |
2585 | ||
b2bdb8cf | 2586 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
927aa2e7 JK |
2587 | } |
2588 | ||
b0b6a987 | 2589 | dwarf2_per_objfile->signatured_types = std::move (sig_types_hash); |
927aa2e7 JK |
2590 | } |
2591 | ||
9291a0cd TT |
2592 | /* Read the address map data from the mapped index, and use it to |
2593 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2594 | |
9291a0cd | 2595 | static void |
ed2dc618 SM |
2596 | create_addrmap_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2597 | struct mapped_index *index) | |
9291a0cd | 2598 | { |
ed2dc618 | 2599 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 2600 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9291a0cd | 2601 | const gdb_byte *iter, *end; |
9291a0cd | 2602 | struct addrmap *mutable_map; |
9291a0cd TT |
2603 | CORE_ADDR baseaddr; |
2604 | ||
8268c778 PA |
2605 | auto_obstack temp_obstack; |
2606 | ||
9291a0cd TT |
2607 | mutable_map = addrmap_create_mutable (&temp_obstack); |
2608 | ||
f00a2de2 PA |
2609 | iter = index->address_table.data (); |
2610 | end = iter + index->address_table.size (); | |
9291a0cd | 2611 | |
b3b3bada | 2612 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
2613 | |
2614 | while (iter < end) | |
2615 | { | |
2616 | ULONGEST hi, lo, cu_index; | |
2617 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2618 | iter += 8; | |
2619 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2620 | iter += 8; | |
2621 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2622 | iter += 4; | |
f652bce2 | 2623 | |
24a55014 | 2624 | if (lo > hi) |
f652bce2 | 2625 | { |
b98664d3 | 2626 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 2627 | hex_string (lo), hex_string (hi)); |
24a55014 | 2628 | continue; |
f652bce2 | 2629 | } |
24a55014 | 2630 | |
b76e467d | 2631 | if (cu_index >= dwarf2_per_objfile->all_comp_units.size ()) |
f652bce2 | 2632 | { |
b98664d3 | 2633 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 2634 | (unsigned) cu_index); |
24a55014 | 2635 | continue; |
f652bce2 | 2636 | } |
24a55014 | 2637 | |
79748972 TT |
2638 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
2639 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 2640 | addrmap_set_empty (mutable_map, lo, hi - 1, |
ff4c9fec | 2641 | dwarf2_per_objfile->get_cu (cu_index)); |
9291a0cd TT |
2642 | } |
2643 | ||
d320c2b5 | 2644 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2645 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
9291a0cd TT |
2646 | } |
2647 | ||
927aa2e7 JK |
2648 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
2649 | populate the objfile's psymtabs_addrmap. */ | |
2650 | ||
2651 | static void | |
ed2dc618 | 2652 | create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
2653 | struct dwarf2_section_info *section) |
2654 | { | |
ed2dc618 | 2655 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 JK |
2656 | bfd *abfd = objfile->obfd; |
2657 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
b3b3bada | 2658 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
927aa2e7 JK |
2659 | |
2660 | auto_obstack temp_obstack; | |
2661 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
2662 | ||
2663 | std::unordered_map<sect_offset, | |
2664 | dwarf2_per_cu_data *, | |
2665 | gdb::hash_enum<sect_offset>> | |
2666 | debug_info_offset_to_per_cu; | |
b76e467d | 2667 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 2668 | { |
927aa2e7 JK |
2669 | const auto insertpair |
2670 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
2671 | if (!insertpair.second) | |
2672 | { | |
2673 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
2674 | "debug_info_offset %s, ignoring .debug_aranges."), |
2675 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
2676 | return; |
2677 | } | |
2678 | } | |
2679 | ||
96b79293 | 2680 | section->read (objfile); |
927aa2e7 JK |
2681 | |
2682 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
2683 | ||
2684 | const gdb_byte *addr = section->buffer; | |
2685 | ||
2686 | while (addr < section->buffer + section->size) | |
2687 | { | |
2688 | const gdb_byte *const entry_addr = addr; | |
2689 | unsigned int bytes_read; | |
2690 | ||
2691 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
2692 | &bytes_read); | |
2693 | addr += bytes_read; | |
2694 | ||
2695 | const gdb_byte *const entry_end = addr + entry_length; | |
2696 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
2697 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
2698 | if (addr + entry_length > section->buffer + section->size) | |
2699 | { | |
47e3f474 | 2700 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2701 | "length %s exceeds section length %s, " |
2702 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2703 | objfile_name (objfile), |
2704 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2705 | plongest (bytes_read + entry_length), |
2706 | pulongest (section->size)); | |
2707 | return; | |
2708 | } | |
2709 | ||
2710 | /* The version number. */ | |
2711 | const uint16_t version = read_2_bytes (abfd, addr); | |
2712 | addr += 2; | |
2713 | if (version != 2) | |
2714 | { | |
47e3f474 | 2715 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2716 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
2717 | objfile_name (objfile), |
2718 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
2719 | return; |
2720 | } | |
2721 | ||
2722 | const uint64_t debug_info_offset | |
2723 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
2724 | addr += offset_size; | |
2725 | const auto per_cu_it | |
2726 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
2727 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
2728 | { | |
47e3f474 | 2729 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2730 | "debug_info_offset %s does not exists, " |
2731 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2732 | objfile_name (objfile), |
2733 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2734 | pulongest (debug_info_offset)); |
2735 | return; | |
2736 | } | |
2737 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
2738 | ||
2739 | const uint8_t address_size = *addr++; | |
2740 | if (address_size < 1 || address_size > 8) | |
2741 | { | |
47e3f474 | 2742 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2743 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
2744 | objfile_name (objfile), |
2745 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
2746 | return; |
2747 | } | |
2748 | ||
2749 | const uint8_t segment_selector_size = *addr++; | |
2750 | if (segment_selector_size != 0) | |
2751 | { | |
47e3f474 | 2752 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2753 | "segment_selector_size %u is not supported, " |
2754 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2755 | objfile_name (objfile), |
2756 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2757 | segment_selector_size); |
2758 | return; | |
2759 | } | |
2760 | ||
2761 | /* Must pad to an alignment boundary that is twice the address | |
2762 | size. It is undocumented by the DWARF standard but GCC does | |
2763 | use it. */ | |
2764 | for (size_t padding = ((-(addr - section->buffer)) | |
2765 | & (2 * address_size - 1)); | |
2766 | padding > 0; padding--) | |
2767 | if (*addr++ != 0) | |
2768 | { | |
47e3f474 | 2769 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2770 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
2771 | objfile_name (objfile), |
2772 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2773 | return; |
2774 | } | |
2775 | ||
2776 | for (;;) | |
2777 | { | |
2778 | if (addr + 2 * address_size > entry_end) | |
2779 | { | |
47e3f474 | 2780 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2781 | "address list is not properly terminated, " |
2782 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2783 | objfile_name (objfile), |
2784 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2785 | return; |
2786 | } | |
2787 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
2788 | dwarf5_byte_order); | |
2789 | addr += address_size; | |
2790 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
2791 | dwarf5_byte_order); | |
2792 | addr += address_size; | |
2793 | if (start == 0 && length == 0) | |
2794 | break; | |
2795 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
2796 | { | |
2797 | /* Symbol was eliminated due to a COMDAT group. */ | |
2798 | continue; | |
2799 | } | |
2800 | ULONGEST end = start + length; | |
79748972 TT |
2801 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
2802 | - baseaddr); | |
2803 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
2804 | - baseaddr); | |
927aa2e7 JK |
2805 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
2806 | } | |
2807 | } | |
2808 | ||
d320c2b5 | 2809 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2810 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
927aa2e7 JK |
2811 | } |
2812 | ||
9291a0cd TT |
2813 | /* Find a slot in the mapped index INDEX for the object named NAME. |
2814 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
2815 | constant pool and return true. If NAME cannot be found, return |
2816 | false. */ | |
2fdf6df6 | 2817 | |
109483d9 | 2818 | static bool |
9291a0cd TT |
2819 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
2820 | offset_type **vec_out) | |
2821 | { | |
0cf03b49 | 2822 | offset_type hash; |
9291a0cd | 2823 | offset_type slot, step; |
559a7a62 | 2824 | int (*cmp) (const char *, const char *); |
9291a0cd | 2825 | |
791afaa2 | 2826 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 2827 | if (current_language->la_language == language_cplus |
45280282 IB |
2828 | || current_language->la_language == language_fortran |
2829 | || current_language->la_language == language_d) | |
0cf03b49 JK |
2830 | { |
2831 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2832 | not contain any. */ | |
a8719064 | 2833 | |
72998fb3 | 2834 | if (strchr (name, '(') != NULL) |
0cf03b49 | 2835 | { |
109483d9 | 2836 | without_params = cp_remove_params (name); |
0cf03b49 | 2837 | |
72998fb3 | 2838 | if (without_params != NULL) |
791afaa2 | 2839 | name = without_params.get (); |
0cf03b49 JK |
2840 | } |
2841 | } | |
2842 | ||
559a7a62 | 2843 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2844 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2845 | simulate our NAME being searched is also lowercased. */ |
2846 | hash = mapped_index_string_hash ((index->version == 4 | |
2847 | && case_sensitivity == case_sensitive_off | |
2848 | ? 5 : index->version), | |
2849 | name); | |
2850 | ||
f00a2de2 PA |
2851 | slot = hash & (index->symbol_table.size () - 1); |
2852 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 2853 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2854 | |
2855 | for (;;) | |
2856 | { | |
9291a0cd | 2857 | const char *str; |
f00a2de2 PA |
2858 | |
2859 | const auto &bucket = index->symbol_table[slot]; | |
2860 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 2861 | return false; |
9291a0cd | 2862 | |
f00a2de2 | 2863 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 2864 | if (!cmp (name, str)) |
9291a0cd TT |
2865 | { |
2866 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 2867 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 2868 | return true; |
9291a0cd TT |
2869 | } |
2870 | ||
f00a2de2 | 2871 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
2872 | } |
2873 | } | |
2874 | ||
4485a1c1 SM |
2875 | /* A helper function that reads the .gdb_index from BUFFER and fills |
2876 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 2877 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
2878 | ok to use deprecated sections. |
2879 | ||
2880 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
2881 | out parameters that are filled in with information about the CU and | |
2882 | TU lists in the section. | |
2883 | ||
4485a1c1 | 2884 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 2885 | |
d33bc52e | 2886 | static bool |
4485a1c1 SM |
2887 | read_gdb_index_from_buffer (struct objfile *objfile, |
2888 | const char *filename, | |
2889 | bool deprecated_ok, | |
2890 | gdb::array_view<const gdb_byte> buffer, | |
2891 | struct mapped_index *map, | |
2892 | const gdb_byte **cu_list, | |
2893 | offset_type *cu_list_elements, | |
2894 | const gdb_byte **types_list, | |
2895 | offset_type *types_list_elements) | |
2896 | { | |
2897 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 2898 | |
9291a0cd | 2899 | /* Version check. */ |
4485a1c1 | 2900 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2901 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2902 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2903 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 2904 | indices. */ |
831adc1f | 2905 | if (version < 4) |
481860b3 GB |
2906 | { |
2907 | static int warning_printed = 0; | |
2908 | if (!warning_printed) | |
2909 | { | |
2910 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 2911 | filename); |
481860b3 GB |
2912 | warning_printed = 1; |
2913 | } | |
2914 | return 0; | |
2915 | } | |
2916 | /* Index version 4 uses a different hash function than index version | |
2917 | 5 and later. | |
2918 | ||
2919 | Versions earlier than 6 did not emit psymbols for inlined | |
2920 | functions. Using these files will cause GDB not to be able to | |
2921 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
2922 | indices unless the user has done |
2923 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 2924 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
2925 | { |
2926 | static int warning_printed = 0; | |
2927 | if (!warning_printed) | |
2928 | { | |
e615022a DE |
2929 | warning (_("\ |
2930 | Skipping deprecated .gdb_index section in %s.\n\ | |
2931 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
2932 | to use the section anyway."), | |
2ec9a5e0 | 2933 | filename); |
481860b3 GB |
2934 | warning_printed = 1; |
2935 | } | |
2936 | return 0; | |
2937 | } | |
796a7ff8 | 2938 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
2939 | of the TU (for symbols coming from TUs), |
2940 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
2941 | Plus gold-generated indices can have duplicate entries for global symbols, | |
2942 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
2943 | These are just performance bugs, and we can't distinguish gdb-generated | |
2944 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 2945 | |
481860b3 | 2946 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 2947 | longer backward compatible. */ |
796a7ff8 | 2948 | if (version > 8) |
594e8718 | 2949 | return 0; |
9291a0cd | 2950 | |
559a7a62 | 2951 | map->version = version; |
9291a0cd | 2952 | |
4485a1c1 | 2953 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 2954 | |
4485a1c1 | 2955 | int i = 0; |
2ec9a5e0 TT |
2956 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
2957 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
2958 | / 8); | |
1fd400ff TT |
2959 | ++i; |
2960 | ||
2ec9a5e0 TT |
2961 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
2962 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
2963 | - MAYBE_SWAP (metadata[i])) | |
2964 | / 8); | |
987d643c | 2965 | ++i; |
1fd400ff | 2966 | |
f00a2de2 PA |
2967 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
2968 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
2969 | map->address_table | |
2970 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
2971 | ++i; |
2972 | ||
f00a2de2 PA |
2973 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
2974 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
2975 | map->symbol_table | |
2976 | = gdb::array_view<mapped_index::symbol_table_slot> | |
2977 | ((mapped_index::symbol_table_slot *) symbol_table, | |
2978 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 2979 | |
f00a2de2 | 2980 | ++i; |
f9d83a0b | 2981 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 2982 | |
2ec9a5e0 TT |
2983 | return 1; |
2984 | } | |
2985 | ||
4485a1c1 SM |
2986 | /* Callback types for dwarf2_read_gdb_index. */ |
2987 | ||
2988 | typedef gdb::function_view | |
2989 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_objfile *)> | |
2990 | get_gdb_index_contents_ftype; | |
2991 | typedef gdb::function_view | |
2992 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
2993 | get_gdb_index_contents_dwz_ftype; | |
2994 | ||
927aa2e7 | 2995 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
2996 | elements of all the CUs and return 1. Otherwise, return 0. */ |
2997 | ||
2998 | static int | |
4485a1c1 SM |
2999 | dwarf2_read_gdb_index |
3000 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
3001 | get_gdb_index_contents_ftype get_gdb_index_contents, | |
3002 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3003 | { |
2ec9a5e0 TT |
3004 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3005 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3006 | struct dwz_file *dwz; |
12359b5e | 3007 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ec9a5e0 | 3008 | |
4485a1c1 SM |
3009 | gdb::array_view<const gdb_byte> main_index_contents |
3010 | = get_gdb_index_contents (objfile, dwarf2_per_objfile); | |
3011 | ||
3012 | if (main_index_contents.empty ()) | |
3013 | return 0; | |
3014 | ||
3063847f | 3015 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
4485a1c1 SM |
3016 | if (!read_gdb_index_from_buffer (objfile, objfile_name (objfile), |
3017 | use_deprecated_index_sections, | |
3018 | main_index_contents, map.get (), &cu_list, | |
3019 | &cu_list_elements, &types_list, | |
3020 | &types_list_elements)) | |
2ec9a5e0 TT |
3021 | return 0; |
3022 | ||
0fefef59 | 3023 | /* Don't use the index if it's empty. */ |
3063847f | 3024 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3025 | return 0; |
3026 | ||
2ec9a5e0 TT |
3027 | /* If there is a .dwz file, read it so we can get its CU list as |
3028 | well. */ | |
ed2dc618 | 3029 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 3030 | if (dwz != NULL) |
2ec9a5e0 | 3031 | { |
2ec9a5e0 TT |
3032 | struct mapped_index dwz_map; |
3033 | const gdb_byte *dwz_types_ignore; | |
3034 | offset_type dwz_types_elements_ignore; | |
3035 | ||
4485a1c1 SM |
3036 | gdb::array_view<const gdb_byte> dwz_index_content |
3037 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3038 | ||
3039 | if (dwz_index_content.empty ()) | |
3040 | return 0; | |
3041 | ||
3042 | if (!read_gdb_index_from_buffer (objfile, | |
00f93c44 AM |
3043 | bfd_get_filename (dwz->dwz_bfd.get ()), |
3044 | 1, dwz_index_content, &dwz_map, | |
4485a1c1 SM |
3045 | &dwz_list, &dwz_list_elements, |
3046 | &dwz_types_ignore, | |
3047 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3048 | { |
3049 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3050 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3051 | return 0; |
3052 | } | |
3053 | } | |
3054 | ||
12359b5e SM |
3055 | create_cus_from_index (dwarf2_per_objfile, cu_list, cu_list_elements, |
3056 | dwz_list, dwz_list_elements); | |
1fd400ff | 3057 | |
8b70b953 TT |
3058 | if (types_list_elements) |
3059 | { | |
8b70b953 TT |
3060 | /* We can only handle a single .debug_types when we have an |
3061 | index. */ | |
fd5866f6 | 3062 | if (dwarf2_per_objfile->types.size () != 1) |
8b70b953 TT |
3063 | return 0; |
3064 | ||
fd5866f6 | 3065 | dwarf2_section_info *section = &dwarf2_per_objfile->types[0]; |
8b70b953 | 3066 | |
12359b5e SM |
3067 | create_signatured_type_table_from_index (dwarf2_per_objfile, section, |
3068 | types_list, types_list_elements); | |
8b70b953 | 3069 | } |
9291a0cd | 3070 | |
3063847f | 3071 | create_addrmap_from_index (dwarf2_per_objfile, map.get ()); |
9291a0cd | 3072 | |
3063847f | 3073 | dwarf2_per_objfile->index_table = std::move (map); |
9291a0cd | 3074 | dwarf2_per_objfile->using_index = 1; |
7b9f3c50 | 3075 | dwarf2_per_objfile->quick_file_names_table = |
b76e467d | 3076 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
9291a0cd TT |
3077 | |
3078 | return 1; | |
3079 | } | |
3080 | ||
dee91e82 | 3081 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3082 | |
dee91e82 DE |
3083 | static void |
3084 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3085 | const gdb_byte *info_ptr, |
3e225074 | 3086 | struct die_info *comp_unit_die) |
9291a0cd | 3087 | { |
dee91e82 | 3088 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3089 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
518817b3 SM |
3090 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3091 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 3092 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 3093 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3094 | struct attribute *attr; |
7b9f3c50 DE |
3095 | void **slot; |
3096 | struct quick_file_names *qfn; | |
9291a0cd | 3097 | |
0186c6a7 DE |
3098 | gdb_assert (! this_cu->is_debug_types); |
3099 | ||
07261596 TT |
3100 | /* Our callers never want to match partial units -- instead they |
3101 | will match the enclosing full CU. */ | |
3102 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3103 | { | |
3104 | this_cu->v.quick->no_file_data = 1; | |
3105 | return; | |
3106 | } | |
3107 | ||
0186c6a7 | 3108 | lh_cu = this_cu; |
7b9f3c50 | 3109 | slot = NULL; |
dee91e82 | 3110 | |
fff8551c | 3111 | line_header_up lh; |
9c541725 | 3112 | sect_offset line_offset {}; |
fff8551c | 3113 | |
dee91e82 | 3114 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
435d3d88 | 3115 | if (attr != nullptr) |
9291a0cd | 3116 | { |
7b9f3c50 DE |
3117 | struct quick_file_names find_entry; |
3118 | ||
9c541725 | 3119 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
3120 | |
3121 | /* We may have already read in this line header (TU line header sharing). | |
3122 | If we have we're done. */ | |
094b34ac | 3123 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3124 | find_entry.hash.line_sect_off = line_offset; |
5895093f | 3125 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table.get (), |
7b9f3c50 DE |
3126 | &find_entry, INSERT); |
3127 | if (*slot != NULL) | |
3128 | { | |
9a3c8263 | 3129 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3130 | return; |
7b9f3c50 DE |
3131 | } |
3132 | ||
3019eac3 | 3133 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3134 | } |
3135 | if (lh == NULL) | |
3136 | { | |
094b34ac | 3137 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3138 | return; |
9291a0cd TT |
3139 | } |
3140 | ||
8d749320 | 3141 | qfn = XOBNEW (&objfile->objfile_obstack, struct quick_file_names); |
094b34ac | 3142 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3143 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3144 | gdb_assert (slot != NULL); |
3145 | *slot = qfn; | |
9291a0cd | 3146 | |
d721ba37 | 3147 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3148 | |
aa391654 TT |
3149 | int offset = 0; |
3150 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3151 | ++offset; | |
3152 | ||
7ba99d21 | 3153 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3154 | qfn->file_names = |
aa391654 TT |
3155 | XOBNEWVEC (&objfile->objfile_obstack, const char *, qfn->num_file_names); |
3156 | if (offset != 0) | |
3157 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3158 | for (int i = 0; i < lh->file_names_size (); ++i) |
03075812 TT |
3159 | qfn->file_names[i + offset] = lh->file_full_name (i + 1, |
3160 | fnd.comp_dir).release (); | |
7b9f3c50 | 3161 | qfn->real_names = NULL; |
9291a0cd | 3162 | |
094b34ac | 3163 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3164 | } |
3165 | ||
3166 | /* A helper for the "quick" functions which attempts to read the line | |
3167 | table for THIS_CU. */ | |
3168 | ||
3169 | static struct quick_file_names * | |
e4a48d9d | 3170 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3171 | { |
0186c6a7 DE |
3172 | /* This should never be called for TUs. */ |
3173 | gdb_assert (! this_cu->is_debug_types); | |
3174 | /* Nor type unit groups. */ | |
197400e8 | 3175 | gdb_assert (! this_cu->type_unit_group_p ()); |
f4dc4d17 | 3176 | |
dee91e82 DE |
3177 | if (this_cu->v.quick->file_names != NULL) |
3178 | return this_cu->v.quick->file_names; | |
3179 | /* If we know there is no line data, no point in looking again. */ | |
3180 | if (this_cu->v.quick->no_file_data) | |
3181 | return NULL; | |
3182 | ||
c0ab21c2 TT |
3183 | cutu_reader reader (this_cu); |
3184 | if (!reader.dummy_p) | |
3e225074 | 3185 | dw2_get_file_names_reader (&reader, reader.info_ptr, reader.comp_unit_die); |
dee91e82 DE |
3186 | |
3187 | if (this_cu->v.quick->no_file_data) | |
3188 | return NULL; | |
3189 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3190 | } |
3191 | ||
3192 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3193 | real path for a given file name from the line table. */ |
2fdf6df6 | 3194 | |
9291a0cd | 3195 | static const char * |
7b9f3c50 DE |
3196 | dw2_get_real_path (struct objfile *objfile, |
3197 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3198 | { |
7b9f3c50 DE |
3199 | if (qfn->real_names == NULL) |
3200 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 3201 | qfn->num_file_names, const char *); |
9291a0cd | 3202 | |
7b9f3c50 | 3203 | if (qfn->real_names[index] == NULL) |
14278e1f | 3204 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3205 | |
7b9f3c50 | 3206 | return qfn->real_names[index]; |
9291a0cd TT |
3207 | } |
3208 | ||
3209 | static struct symtab * | |
3210 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3211 | { | |
ed2dc618 SM |
3212 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3213 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3214 | dwarf2_per_cu_data *dwarf_cu = dwarf2_per_objfile->all_comp_units.back (); |
58f0c718 | 3215 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, false); |
ae2de4f8 | 3216 | |
43f3e411 DE |
3217 | if (cust == NULL) |
3218 | return NULL; | |
ed2dc618 | 3219 | |
43f3e411 | 3220 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3221 | } |
3222 | ||
7b9f3c50 DE |
3223 | /* Traversal function for dw2_forget_cached_source_info. */ |
3224 | ||
3225 | static int | |
3226 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3227 | { |
7b9f3c50 | 3228 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3229 | |
7b9f3c50 | 3230 | if (file_data->real_names) |
9291a0cd | 3231 | { |
7b9f3c50 | 3232 | int i; |
9291a0cd | 3233 | |
7b9f3c50 | 3234 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3235 | { |
7b9f3c50 DE |
3236 | xfree ((void*) file_data->real_names[i]); |
3237 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3238 | } |
3239 | } | |
7b9f3c50 DE |
3240 | |
3241 | return 1; | |
3242 | } | |
3243 | ||
3244 | static void | |
3245 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3246 | { | |
ed2dc618 SM |
3247 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3248 | = get_dwarf2_per_objfile (objfile); | |
7b9f3c50 | 3249 | |
5895093f | 3250 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table.get (), |
7b9f3c50 | 3251 | dw2_free_cached_file_names, NULL); |
9291a0cd TT |
3252 | } |
3253 | ||
f8eba3c6 TT |
3254 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3255 | the symtabs and calls the iterator. */ | |
3256 | ||
3257 | static int | |
3258 | dw2_map_expand_apply (struct objfile *objfile, | |
3259 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3260 | const char *name, const char *real_path, |
14bc53a8 | 3261 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3262 | { |
43f3e411 | 3263 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3264 | |
3265 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 3266 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
3267 | return 0; |
3268 | ||
3269 | /* This may expand more than one symtab, and we want to iterate over | |
3270 | all of them. */ | |
58f0c718 | 3271 | dw2_instantiate_symtab (per_cu, false); |
f8eba3c6 | 3272 | |
14bc53a8 PA |
3273 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3274 | last_made, callback); | |
f8eba3c6 TT |
3275 | } |
3276 | ||
3277 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3278 | ||
14bc53a8 PA |
3279 | static bool |
3280 | dw2_map_symtabs_matching_filename | |
3281 | (struct objfile *objfile, const char *name, const char *real_path, | |
3282 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3283 | { |
c011a4f4 | 3284 | const char *name_basename = lbasename (name); |
ed2dc618 SM |
3285 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3286 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 3287 | |
848e3e78 DE |
3288 | /* The rule is CUs specify all the files, including those used by |
3289 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3290 | |
b76e467d | 3291 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 3292 | { |
3d7bb9d9 | 3293 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3294 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3295 | continue; |
3296 | ||
b76e467d | 3297 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3298 | if (file_data == NULL) |
9291a0cd TT |
3299 | continue; |
3300 | ||
b76e467d | 3301 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3302 | { |
7b9f3c50 | 3303 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3304 | const char *this_real_name; |
9291a0cd | 3305 | |
af529f8f | 3306 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3307 | { |
f5b95b50 | 3308 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3309 | callback)) |
3310 | return true; | |
288e77a7 | 3311 | continue; |
4aac40c8 | 3312 | } |
9291a0cd | 3313 | |
c011a4f4 DE |
3314 | /* Before we invoke realpath, which can get expensive when many |
3315 | files are involved, do a quick comparison of the basenames. */ | |
3316 | if (! basenames_may_differ | |
3317 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3318 | continue; | |
3319 | ||
da235a7c JK |
3320 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3321 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3322 | { |
da235a7c | 3323 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3324 | callback)) |
3325 | return true; | |
288e77a7 | 3326 | continue; |
da235a7c | 3327 | } |
9291a0cd | 3328 | |
da235a7c JK |
3329 | if (real_path != NULL) |
3330 | { | |
af529f8f JK |
3331 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3332 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3333 | if (this_real_name != NULL |
af529f8f | 3334 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3335 | { |
f5b95b50 | 3336 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3337 | callback)) |
3338 | return true; | |
288e77a7 | 3339 | continue; |
9291a0cd TT |
3340 | } |
3341 | } | |
3342 | } | |
3343 | } | |
3344 | ||
14bc53a8 | 3345 | return false; |
9291a0cd TT |
3346 | } |
3347 | ||
da51c347 DE |
3348 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3349 | ||
3350 | struct dw2_symtab_iterator | |
9291a0cd | 3351 | { |
ed2dc618 SM |
3352 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
3353 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
2b79f376 SM |
3354 | /* If set, only look for symbols that match that block. Valid values are |
3355 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3356 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3357 | /* The kind of symbol we're looking for. */ |
3358 | domain_enum domain; | |
3359 | /* The list of CUs from the index entry of the symbol, | |
3360 | or NULL if not found. */ | |
3361 | offset_type *vec; | |
3362 | /* The next element in VEC to look at. */ | |
3363 | int next; | |
3364 | /* The number of elements in VEC, or zero if there is no match. */ | |
3365 | int length; | |
8943b874 DE |
3366 | /* Have we seen a global version of the symbol? |
3367 | If so we can ignore all further global instances. | |
3368 | This is to work around gold/15646, inefficient gold-generated | |
3369 | indices. */ | |
3370 | int global_seen; | |
da51c347 | 3371 | }; |
9291a0cd | 3372 | |
2b79f376 | 3373 | /* Initialize the index symtab iterator ITER. */ |
2fdf6df6 | 3374 | |
9291a0cd | 3375 | static void |
da51c347 | 3376 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
ed2dc618 | 3377 | struct dwarf2_per_objfile *dwarf2_per_objfile, |
c7f839cb | 3378 | gdb::optional<block_enum> block_index, |
da51c347 DE |
3379 | domain_enum domain, |
3380 | const char *name) | |
3381 | { | |
ed2dc618 | 3382 | iter->dwarf2_per_objfile = dwarf2_per_objfile; |
da51c347 DE |
3383 | iter->block_index = block_index; |
3384 | iter->domain = domain; | |
3385 | iter->next = 0; | |
8943b874 | 3386 | iter->global_seen = 0; |
da51c347 | 3387 | |
3063847f | 3388 | mapped_index *index = dwarf2_per_objfile->index_table.get (); |
ed2dc618 SM |
3389 | |
3390 | /* index is NULL if OBJF_READNOW. */ | |
3391 | if (index != NULL && find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 DE |
3392 | iter->length = MAYBE_SWAP (*iter->vec); |
3393 | else | |
3394 | { | |
3395 | iter->vec = NULL; | |
3396 | iter->length = 0; | |
3397 | } | |
3398 | } | |
3399 | ||
3400 | /* Return the next matching CU or NULL if there are no more. */ | |
3401 | ||
3402 | static struct dwarf2_per_cu_data * | |
3403 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3404 | { | |
ed2dc618 SM |
3405 | struct dwarf2_per_objfile *dwarf2_per_objfile = iter->dwarf2_per_objfile; |
3406 | ||
da51c347 DE |
3407 | for ( ; iter->next < iter->length; ++iter->next) |
3408 | { | |
3409 | offset_type cu_index_and_attrs = | |
3410 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3411 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3412 | gdb_index_symbol_kind symbol_kind = |
3413 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3414 | /* Only check the symbol attributes if they're present. | |
3415 | Indices prior to version 7 don't record them, | |
3416 | and indices >= 7 may elide them for certain symbols | |
3417 | (gold does this). */ | |
3418 | int attrs_valid = | |
ed2dc618 | 3419 | (dwarf2_per_objfile->index_table->version >= 7 |
da51c347 DE |
3420 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3421 | ||
3190f0c6 | 3422 | /* Don't crash on bad data. */ |
b76e467d | 3423 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 3424 | + dwarf2_per_objfile->all_type_units.size ())) |
3190f0c6 | 3425 | { |
b98664d3 | 3426 | complaint (_(".gdb_index entry has bad CU index" |
4262abfb JK |
3427 | " [in module %s]"), |
3428 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3429 | continue; |
3430 | } | |
3431 | ||
ff4c9fec | 3432 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
3190f0c6 | 3433 | |
da51c347 | 3434 | /* Skip if already read in. */ |
43f3e411 | 3435 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
3436 | continue; |
3437 | ||
8943b874 DE |
3438 | /* Check static vs global. */ |
3439 | if (attrs_valid) | |
3440 | { | |
2b79f376 SM |
3441 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3442 | ||
3443 | if (iter->block_index.has_value ()) | |
3444 | { | |
3445 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3446 | ||
3447 | if (is_static != want_static) | |
3448 | continue; | |
3449 | } | |
3450 | ||
8943b874 DE |
3451 | /* Work around gold/15646. */ |
3452 | if (!is_static && iter->global_seen) | |
3453 | continue; | |
3454 | if (!is_static) | |
3455 | iter->global_seen = 1; | |
3456 | } | |
da51c347 DE |
3457 | |
3458 | /* Only check the symbol's kind if it has one. */ | |
3459 | if (attrs_valid) | |
3460 | { | |
3461 | switch (iter->domain) | |
3462 | { | |
3463 | case VAR_DOMAIN: | |
3464 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3465 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3466 | /* Some types are also in VAR_DOMAIN. */ | |
3467 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3468 | continue; | |
3469 | break; | |
3470 | case STRUCT_DOMAIN: | |
3471 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3472 | continue; | |
3473 | break; | |
3474 | case LABEL_DOMAIN: | |
3475 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3476 | continue; | |
3477 | break; | |
59c35742 AB |
3478 | case MODULE_DOMAIN: |
3479 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3480 | continue; | |
3481 | break; | |
da51c347 DE |
3482 | default: |
3483 | break; | |
3484 | } | |
3485 | } | |
3486 | ||
3487 | ++iter->next; | |
3488 | return per_cu; | |
3489 | } | |
3490 | ||
3491 | return NULL; | |
3492 | } | |
3493 | ||
43f3e411 | 3494 | static struct compunit_symtab * |
c7f839cb | 3495 | dw2_lookup_symbol (struct objfile *objfile, block_enum block_index, |
da51c347 | 3496 | const char *name, domain_enum domain) |
9291a0cd | 3497 | { |
43f3e411 | 3498 | struct compunit_symtab *stab_best = NULL; |
ed2dc618 SM |
3499 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3500 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 3501 | |
b5ec771e PA |
3502 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
3503 | ||
ed2dc618 SM |
3504 | struct dw2_symtab_iterator iter; |
3505 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3506 | |
2b79f376 | 3507 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, block_index, domain, name); |
9291a0cd | 3508 | |
ed2dc618 SM |
3509 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
3510 | { | |
3511 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 3512 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
ed2dc618 | 3513 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 3514 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3515 | |
ed2dc618 SM |
3516 | sym = block_find_symbol (block, name, domain, |
3517 | block_find_non_opaque_type_preferred, | |
3518 | &with_opaque); | |
b2e2f908 | 3519 | |
ed2dc618 SM |
3520 | /* Some caution must be observed with overloaded functions |
3521 | and methods, since the index will not contain any overload | |
3522 | information (but NAME might contain it). */ | |
da51c347 | 3523 | |
ed2dc618 SM |
3524 | if (sym != NULL |
3525 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
3526 | return stab; | |
3527 | if (with_opaque != NULL | |
3528 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
3529 | stab_best = stab; | |
da51c347 | 3530 | |
ed2dc618 | 3531 | /* Keep looking through other CUs. */ |
9291a0cd | 3532 | } |
9291a0cd | 3533 | |
da51c347 | 3534 | return stab_best; |
9291a0cd TT |
3535 | } |
3536 | ||
3537 | static void | |
3538 | dw2_print_stats (struct objfile *objfile) | |
3539 | { | |
ed2dc618 SM |
3540 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3541 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3542 | int total = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 3543 | + dwarf2_per_objfile->all_type_units.size ()); |
ed2dc618 | 3544 | int count = 0; |
9291a0cd | 3545 | |
ed2dc618 | 3546 | for (int i = 0; i < total; ++i) |
9291a0cd | 3547 | { |
ff4c9fec | 3548 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 3549 | |
43f3e411 | 3550 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3551 | ++count; |
3552 | } | |
e4a48d9d | 3553 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3554 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3555 | } | |
3556 | ||
779bd270 DE |
3557 | /* This dumps minimal information about the index. |
3558 | It is called via "mt print objfiles". | |
3559 | One use is to verify .gdb_index has been loaded by the | |
3560 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3561 | ||
9291a0cd TT |
3562 | static void |
3563 | dw2_dump (struct objfile *objfile) | |
3564 | { | |
ed2dc618 SM |
3565 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3566 | = get_dwarf2_per_objfile (objfile); | |
3567 | ||
779bd270 DE |
3568 | gdb_assert (dwarf2_per_objfile->using_index); |
3569 | printf_filtered (".gdb_index:"); | |
3570 | if (dwarf2_per_objfile->index_table != NULL) | |
3571 | { | |
3572 | printf_filtered (" version %d\n", | |
3573 | dwarf2_per_objfile->index_table->version); | |
3574 | } | |
3575 | else | |
3576 | printf_filtered (" faked for \"readnow\"\n"); | |
3577 | printf_filtered ("\n"); | |
9291a0cd TT |
3578 | } |
3579 | ||
9291a0cd TT |
3580 | static void |
3581 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3582 | const char *func_name) | |
3583 | { | |
ed2dc618 SM |
3584 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3585 | = get_dwarf2_per_objfile (objfile); | |
da51c347 | 3586 | |
ed2dc618 SM |
3587 | struct dw2_symtab_iterator iter; |
3588 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3589 | |
2b79f376 | 3590 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, {}, VAR_DOMAIN, func_name); |
da51c347 | 3591 | |
ed2dc618 | 3592 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
58f0c718 | 3593 | dw2_instantiate_symtab (per_cu, false); |
da51c347 | 3594 | |
9291a0cd TT |
3595 | } |
3596 | ||
3597 | static void | |
3598 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3599 | { | |
ed2dc618 SM |
3600 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3601 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3602 | int total_units = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 3603 | + dwarf2_per_objfile->all_type_units.size ()); |
9291a0cd | 3604 | |
ed2dc618 | 3605 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 3606 | { |
ff4c9fec | 3607 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 3608 | |
58f0c718 TT |
3609 | /* We don't want to directly expand a partial CU, because if we |
3610 | read it with the wrong language, then assertion failures can | |
3611 | be triggered later on. See PR symtab/23010. So, tell | |
3612 | dw2_instantiate_symtab to skip partial CUs -- any important | |
3613 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
3614 | dw2_instantiate_symtab (per_cu, true); | |
9291a0cd TT |
3615 | } |
3616 | } | |
3617 | ||
3618 | static void | |
652a8996 JK |
3619 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3620 | const char *fullname) | |
9291a0cd | 3621 | { |
ed2dc618 SM |
3622 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3623 | = get_dwarf2_per_objfile (objfile); | |
d4637a04 DE |
3624 | |
3625 | /* We don't need to consider type units here. | |
3626 | This is only called for examining code, e.g. expand_line_sal. | |
3627 | There can be an order of magnitude (or more) more type units | |
3628 | than comp units, and we avoid them if we can. */ | |
3629 | ||
b76e467d | 3630 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 3631 | { |
3d7bb9d9 | 3632 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3633 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3634 | continue; |
3635 | ||
b76e467d | 3636 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3637 | if (file_data == NULL) |
9291a0cd TT |
3638 | continue; |
3639 | ||
b76e467d | 3640 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3641 | { |
652a8996 JK |
3642 | const char *this_fullname = file_data->file_names[j]; |
3643 | ||
3644 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3645 | { |
58f0c718 | 3646 | dw2_instantiate_symtab (per_cu, false); |
9291a0cd TT |
3647 | break; |
3648 | } | |
3649 | } | |
3650 | } | |
3651 | } | |
3652 | ||
9291a0cd | 3653 | static void |
199b4314 TT |
3654 | dw2_map_matching_symbols |
3655 | (struct objfile *objfile, | |
b054970d | 3656 | const lookup_name_info &name, domain_enum domain, |
199b4314 TT |
3657 | int global, |
3658 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 3659 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 3660 | { |
40658b94 | 3661 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
3662 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
3663 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
3664 | } |
3665 | ||
e1ef7d7a PA |
3666 | /* Starting from a search name, return the string that finds the upper |
3667 | bound of all strings that start with SEARCH_NAME in a sorted name | |
3668 | list. Returns the empty string to indicate that the upper bound is | |
3669 | the end of the list. */ | |
3670 | ||
3671 | static std::string | |
3672 | make_sort_after_prefix_name (const char *search_name) | |
3673 | { | |
3674 | /* When looking to complete "func", we find the upper bound of all | |
3675 | symbols that start with "func" by looking for where we'd insert | |
3676 | the closest string that would follow "func" in lexicographical | |
3677 | order. Usually, that's "func"-with-last-character-incremented, | |
3678 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
3679 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
3680 | Especially mind the 0xff character, which is a valid character in | |
3681 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
3682 | rule out compilers allowing it in identifiers. Note that | |
3683 | conveniently, strcmp/strcasecmp are specified to compare | |
3684 | characters interpreted as unsigned char. So what we do is treat | |
3685 | the whole string as a base 256 number composed of a sequence of | |
3686 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
3687 | to 0, and carries 1 to the following more-significant position. | |
3688 | If the very first character in SEARCH_NAME ends up incremented | |
3689 | and carries/overflows, then the upper bound is the end of the | |
3690 | list. The string after the empty string is also the empty | |
3691 | string. | |
3692 | ||
3693 | Some examples of this operation: | |
3694 | ||
3695 | SEARCH_NAME => "+1" RESULT | |
3696 | ||
3697 | "abc" => "abd" | |
3698 | "ab\xff" => "ac" | |
3699 | "\xff" "a" "\xff" => "\xff" "b" | |
3700 | "\xff" => "" | |
3701 | "\xff\xff" => "" | |
3702 | "" => "" | |
3703 | ||
3704 | Then, with these symbols for example: | |
3705 | ||
3706 | func | |
3707 | func1 | |
3708 | fund | |
3709 | ||
3710 | completing "func" looks for symbols between "func" and | |
3711 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
3712 | which finds "func" and "func1", but not "fund". | |
3713 | ||
3714 | And with: | |
3715 | ||
3716 | funcÿ (Latin1 'ÿ' [0xff]) | |
3717 | funcÿ1 | |
3718 | fund | |
3719 | ||
3720 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
3721 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
3722 | ||
3723 | And with: | |
3724 | ||
3725 | ÿÿ (Latin1 'ÿ' [0xff]) | |
3726 | ÿÿ1 | |
3727 | ||
3728 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
3729 | the end of the list. | |
3730 | */ | |
3731 | std::string after = search_name; | |
3732 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
3733 | after.pop_back (); | |
3734 | if (!after.empty ()) | |
3735 | after.back () = (unsigned char) after.back () + 1; | |
3736 | return after; | |
3737 | } | |
3738 | ||
5c58de74 | 3739 | /* See declaration. */ |
61d96d7e | 3740 | |
5c58de74 PA |
3741 | std::pair<std::vector<name_component>::const_iterator, |
3742 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 3743 | mapped_index_base::find_name_components_bounds |
3b00ef10 | 3744 | (const lookup_name_info &lookup_name_without_params, language lang) const |
3f563c84 | 3745 | { |
5c58de74 PA |
3746 | auto *name_cmp |
3747 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 3748 | |
3b00ef10 TT |
3749 | const char *lang_name |
3750 | = lookup_name_without_params.language_lookup_name (lang).c_str (); | |
9291a0cd | 3751 | |
3f563c84 PA |
3752 | /* Comparison function object for lower_bound that matches against a |
3753 | given symbol name. */ | |
3754 | auto lookup_compare_lower = [&] (const name_component &elem, | |
3755 | const char *name) | |
3756 | { | |
5c58de74 | 3757 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
3758 | const char *elem_name = elem_qualified + elem.name_offset; |
3759 | return name_cmp (elem_name, name) < 0; | |
3760 | }; | |
3761 | ||
3762 | /* Comparison function object for upper_bound that matches against a | |
3763 | given symbol name. */ | |
3764 | auto lookup_compare_upper = [&] (const char *name, | |
3765 | const name_component &elem) | |
3766 | { | |
5c58de74 | 3767 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
3768 | const char *elem_name = elem_qualified + elem.name_offset; |
3769 | return name_cmp (name, elem_name) < 0; | |
3770 | }; | |
3771 | ||
5c58de74 PA |
3772 | auto begin = this->name_components.begin (); |
3773 | auto end = this->name_components.end (); | |
3f563c84 PA |
3774 | |
3775 | /* Find the lower bound. */ | |
3776 | auto lower = [&] () | |
3777 | { | |
3b00ef10 | 3778 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
3779 | return begin; |
3780 | else | |
3b00ef10 | 3781 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
3782 | } (); |
3783 | ||
3784 | /* Find the upper bound. */ | |
3785 | auto upper = [&] () | |
3786 | { | |
5c58de74 | 3787 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 3788 | { |
e1ef7d7a PA |
3789 | /* In completion mode, we want UPPER to point past all |
3790 | symbols names that have the same prefix. I.e., with | |
3791 | these symbols, and completing "func": | |
3792 | ||
3793 | function << lower bound | |
3794 | function1 | |
3795 | other_function << upper bound | |
3796 | ||
3797 | We find the upper bound by looking for the insertion | |
3798 | point of "func"-with-last-character-incremented, | |
3799 | i.e. "fund". */ | |
3b00ef10 | 3800 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 3801 | if (after.empty ()) |
3f563c84 | 3802 | return end; |
e6b2f5ef PA |
3803 | return std::lower_bound (lower, end, after.c_str (), |
3804 | lookup_compare_lower); | |
3f563c84 PA |
3805 | } |
3806 | else | |
3b00ef10 | 3807 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
3808 | } (); |
3809 | ||
5c58de74 PA |
3810 | return {lower, upper}; |
3811 | } | |
3812 | ||
3813 | /* See declaration. */ | |
3814 | ||
3815 | void | |
44ed8f3e | 3816 | mapped_index_base::build_name_components () |
5c58de74 PA |
3817 | { |
3818 | if (!this->name_components.empty ()) | |
3819 | return; | |
3820 | ||
3821 | this->name_components_casing = case_sensitivity; | |
3822 | auto *name_cmp | |
3823 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3824 | ||
3825 | /* The code below only knows how to break apart components of C++ | |
3826 | symbol names (and other languages that use '::' as | |
3b00ef10 | 3827 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
3828 | auto count = this->symbol_name_count (); |
3829 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 3830 | { |
44ed8f3e | 3831 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
3832 | continue; |
3833 | ||
3834 | const char *name = this->symbol_name_at (idx); | |
3835 | ||
3836 | /* Add each name component to the name component table. */ | |
3837 | unsigned int previous_len = 0; | |
3b00ef10 TT |
3838 | |
3839 | if (strstr (name, "::") != nullptr) | |
3840 | { | |
3841 | for (unsigned int current_len = cp_find_first_component (name); | |
3842 | name[current_len] != '\0'; | |
3843 | current_len += cp_find_first_component (name + current_len)) | |
3844 | { | |
3845 | gdb_assert (name[current_len] == ':'); | |
3846 | this->name_components.push_back ({previous_len, idx}); | |
3847 | /* Skip the '::'. */ | |
3848 | current_len += 2; | |
3849 | previous_len = current_len; | |
3850 | } | |
3851 | } | |
3852 | else | |
5c58de74 | 3853 | { |
3b00ef10 TT |
3854 | /* Handle the Ada encoded (aka mangled) form here. */ |
3855 | for (const char *iter = strstr (name, "__"); | |
3856 | iter != nullptr; | |
3857 | iter = strstr (iter, "__")) | |
3858 | { | |
3859 | this->name_components.push_back ({previous_len, idx}); | |
3860 | iter += 2; | |
3861 | previous_len = iter - name; | |
3862 | } | |
5c58de74 | 3863 | } |
3b00ef10 | 3864 | |
5c58de74 PA |
3865 | this->name_components.push_back ({previous_len, idx}); |
3866 | } | |
3867 | ||
3868 | /* Sort name_components elements by name. */ | |
3869 | auto name_comp_compare = [&] (const name_component &left, | |
3870 | const name_component &right) | |
3871 | { | |
3872 | const char *left_qualified = this->symbol_name_at (left.idx); | |
3873 | const char *right_qualified = this->symbol_name_at (right.idx); | |
3874 | ||
3875 | const char *left_name = left_qualified + left.name_offset; | |
3876 | const char *right_name = right_qualified + right.name_offset; | |
3877 | ||
3878 | return name_cmp (left_name, right_name) < 0; | |
3879 | }; | |
3880 | ||
3881 | std::sort (this->name_components.begin (), | |
3882 | this->name_components.end (), | |
3883 | name_comp_compare); | |
3884 | } | |
3885 | ||
3886 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
3887 | mapped_index_base instead of the containing objfile. This is split |
3888 | to a separate function in order to be able to unit test the | |
3889 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 3890 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 3891 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
3892 | |
3893 | static void | |
3894 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 3895 | (mapped_index_base &index, |
5c58de74 PA |
3896 | const lookup_name_info &lookup_name_in, |
3897 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
3898 | enum search_domain kind, | |
3b00ef10 | 3899 | gdb::function_view<bool (offset_type)> match_callback) |
5c58de74 PA |
3900 | { |
3901 | lookup_name_info lookup_name_without_params | |
3902 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
3903 | |
3904 | /* Build the symbol name component sorted vector, if we haven't | |
3905 | yet. */ | |
3906 | index.build_name_components (); | |
3907 | ||
3f563c84 PA |
3908 | /* The same symbol may appear more than once in the range though. |
3909 | E.g., if we're looking for symbols that complete "w", and we have | |
3910 | a symbol named "w1::w2", we'll find the two name components for | |
3911 | that same symbol in the range. To be sure we only call the | |
3912 | callback once per symbol, we first collect the symbol name | |
3913 | indexes that matched in a temporary vector and ignore | |
3914 | duplicates. */ | |
3915 | std::vector<offset_type> matches; | |
3f563c84 | 3916 | |
3b00ef10 TT |
3917 | struct name_and_matcher |
3918 | { | |
3919 | symbol_name_matcher_ftype *matcher; | |
3920 | const std::string &name; | |
3921 | ||
3922 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 3923 | { |
3b00ef10 TT |
3924 | return matcher == other.matcher && name == other.name; |
3925 | } | |
3926 | }; | |
3927 | ||
3928 | /* A vector holding all the different symbol name matchers, for all | |
3929 | languages. */ | |
3930 | std::vector<name_and_matcher> matchers; | |
3931 | ||
3932 | for (int i = 0; i < nr_languages; i++) | |
3933 | { | |
3934 | enum language lang_e = (enum language) i; | |
3935 | ||
3936 | const language_defn *lang = language_def (lang_e); | |
3937 | symbol_name_matcher_ftype *name_matcher | |
3938 | = get_symbol_name_matcher (lang, lookup_name_without_params); | |
3f563c84 | 3939 | |
3b00ef10 TT |
3940 | name_and_matcher key { |
3941 | name_matcher, | |
3942 | lookup_name_without_params.language_lookup_name (lang_e) | |
3943 | }; | |
3944 | ||
3945 | /* Don't insert the same comparison routine more than once. | |
3946 | Note that we do this linear walk. This is not a problem in | |
3947 | practice because the number of supported languages is | |
3948 | low. */ | |
3949 | if (std::find (matchers.begin (), matchers.end (), key) | |
3950 | != matchers.end ()) | |
9291a0cd | 3951 | continue; |
3b00ef10 TT |
3952 | matchers.push_back (std::move (key)); |
3953 | ||
3954 | auto bounds | |
3955 | = index.find_name_components_bounds (lookup_name_without_params, | |
3956 | lang_e); | |
3957 | ||
3958 | /* Now for each symbol name in range, check to see if we have a name | |
3959 | match, and if so, call the MATCH_CALLBACK callback. */ | |
3960 | ||
3961 | for (; bounds.first != bounds.second; ++bounds.first) | |
3962 | { | |
3963 | const char *qualified = index.symbol_name_at (bounds.first->idx); | |
3964 | ||
3965 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
3966 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
3967 | continue; | |
9291a0cd | 3968 | |
3b00ef10 TT |
3969 | matches.push_back (bounds.first->idx); |
3970 | } | |
3f563c84 PA |
3971 | } |
3972 | ||
3973 | std::sort (matches.begin (), matches.end ()); | |
3974 | ||
3975 | /* Finally call the callback, once per match. */ | |
3976 | ULONGEST prev = -1; | |
3977 | for (offset_type idx : matches) | |
3978 | { | |
3979 | if (prev != idx) | |
3980 | { | |
3b00ef10 TT |
3981 | if (!match_callback (idx)) |
3982 | break; | |
3f563c84 PA |
3983 | prev = idx; |
3984 | } | |
3985 | } | |
3986 | ||
3987 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
3988 | (offset_type)-1 are both possible values. */ | |
3989 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
3990 | } | |
3991 | ||
c62446b1 PA |
3992 | #if GDB_SELF_TEST |
3993 | ||
3994 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
3995 | ||
a3c5fafd PA |
3996 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
3997 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
3998 | mapped_index_base interface. Builds an index from the symbol list | |
3999 | passed as parameter to the constructor. */ | |
4000 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4001 | { |
4002 | public: | |
a3c5fafd PA |
4003 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4004 | : m_symbol_table (symbols) | |
c62446b1 PA |
4005 | {} |
4006 | ||
a3c5fafd | 4007 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4008 | |
a3c5fafd | 4009 | /* Return the number of names in the symbol table. */ |
632e107b | 4010 | size_t symbol_name_count () const override |
c62446b1 | 4011 | { |
a3c5fafd | 4012 | return m_symbol_table.size (); |
c62446b1 PA |
4013 | } |
4014 | ||
a3c5fafd | 4015 | /* Get the name of the symbol at IDX in the symbol table. */ |
632e107b | 4016 | const char *symbol_name_at (offset_type idx) const override |
a3c5fafd PA |
4017 | { |
4018 | return m_symbol_table[idx]; | |
4019 | } | |
c62446b1 | 4020 | |
a3c5fafd PA |
4021 | private: |
4022 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4023 | }; |
4024 | ||
4025 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4026 | string, to pass to print routines. */ | |
4027 | ||
4028 | static const char * | |
4029 | string_or_null (const char *str) | |
4030 | { | |
4031 | return str != NULL ? str : "<null>"; | |
4032 | } | |
4033 | ||
4034 | /* Check if a lookup_name_info built from | |
4035 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4036 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4037 | matching order. If no match expected, then an empty list is | |
4038 | specified. Returns true on success. On failure prints a warning | |
4039 | indicating the file:line that failed, and returns false. */ | |
4040 | ||
4041 | static bool | |
4042 | check_match (const char *file, int line, | |
4043 | mock_mapped_index &mock_index, | |
4044 | const char *name, symbol_name_match_type match_type, | |
4045 | bool completion_mode, | |
4046 | std::initializer_list<const char *> expected_list) | |
4047 | { | |
4048 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4049 | ||
4050 | bool matched = true; | |
4051 | ||
4052 | auto mismatch = [&] (const char *expected_str, | |
4053 | const char *got) | |
4054 | { | |
4055 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4056 | "expected=\"%s\", got=\"%s\"\n"), | |
4057 | file, line, | |
4058 | (match_type == symbol_name_match_type::FULL | |
4059 | ? "FULL" : "WILD"), | |
4060 | name, string_or_null (expected_str), string_or_null (got)); | |
4061 | matched = false; | |
4062 | }; | |
4063 | ||
4064 | auto expected_it = expected_list.begin (); | |
4065 | auto expected_end = expected_list.end (); | |
4066 | ||
a3c5fafd | 4067 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4068 | NULL, ALL_DOMAIN, |
4069 | [&] (offset_type idx) | |
4070 | { | |
a3c5fafd | 4071 | const char *matched_name = mock_index.symbol_name_at (idx); |
c62446b1 PA |
4072 | const char *expected_str |
4073 | = expected_it == expected_end ? NULL : *expected_it++; | |
4074 | ||
4075 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4076 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4077 | return true; |
c62446b1 PA |
4078 | }); |
4079 | ||
4080 | const char *expected_str | |
4081 | = expected_it == expected_end ? NULL : *expected_it++; | |
4082 | if (expected_str != NULL) | |
4083 | mismatch (expected_str, NULL); | |
4084 | ||
4085 | return matched; | |
4086 | } | |
4087 | ||
4088 | /* The symbols added to the mock mapped_index for testing (in | |
4089 | canonical form). */ | |
4090 | static const char *test_symbols[] = { | |
4091 | "function", | |
4092 | "std::bar", | |
4093 | "std::zfunction", | |
4094 | "std::zfunction2", | |
4095 | "w1::w2", | |
4096 | "ns::foo<char*>", | |
4097 | "ns::foo<int>", | |
4098 | "ns::foo<long>", | |
a20714ff PA |
4099 | "ns2::tmpl<int>::foo2", |
4100 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4101 | |
e1ef7d7a PA |
4102 | /* These are used to check that the increment-last-char in the |
4103 | matching algorithm for completion doesn't match "t1_fund" when | |
4104 | completing "t1_func". */ | |
4105 | "t1_func", | |
4106 | "t1_func1", | |
4107 | "t1_fund", | |
4108 | "t1_fund1", | |
4109 | ||
4110 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4111 | cp-name-parser understands this as a single identifier ("função" | |
4112 | is "function" in PT). */ | |
4113 | u8"u8função", | |
4114 | ||
4115 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4116 | "yfunc\377", | |
4117 | ||
4118 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4119 | "\377", | |
4120 | "\377\377123", | |
4121 | ||
c62446b1 PA |
4122 | /* A name with all sorts of complications. Starts with "z" to make |
4123 | it easier for the completion tests below. */ | |
4124 | #define Z_SYM_NAME \ | |
4125 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4126 | "::tuple<(anonymous namespace)::ui*, " \ | |
4127 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4128 | ||
4129 | Z_SYM_NAME | |
4130 | }; | |
4131 | ||
a3c5fafd PA |
4132 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4133 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4134 | in completion mode. */ | |
5c58de74 PA |
4135 | |
4136 | static bool | |
a3c5fafd | 4137 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 PA |
4138 | const char *search_name, |
4139 | gdb::array_view<const char *> expected_syms) | |
4140 | { | |
4141 | lookup_name_info lookup_name (search_name, | |
4142 | symbol_name_match_type::FULL, true); | |
4143 | ||
3b00ef10 TT |
4144 | auto bounds = index.find_name_components_bounds (lookup_name, |
4145 | language_cplus); | |
5c58de74 PA |
4146 | |
4147 | size_t distance = std::distance (bounds.first, bounds.second); | |
4148 | if (distance != expected_syms.size ()) | |
4149 | return false; | |
4150 | ||
4151 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4152 | { | |
4153 | auto nc_elem = bounds.first + exp_elem; | |
4154 | const char *qualified = index.symbol_name_at (nc_elem->idx); | |
4155 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) | |
4156 | return false; | |
4157 | } | |
4158 | ||
4159 | return true; | |
4160 | } | |
4161 | ||
4162 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4163 | method. */ | |
4164 | ||
c62446b1 | 4165 | static void |
5c58de74 PA |
4166 | test_mapped_index_find_name_component_bounds () |
4167 | { | |
4168 | mock_mapped_index mock_index (test_symbols); | |
4169 | ||
a3c5fafd | 4170 | mock_index.build_name_components (); |
5c58de74 PA |
4171 | |
4172 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4173 | method in completion mode. */ | |
4174 | { | |
4175 | static const char *expected_syms[] = { | |
4176 | "t1_func", | |
4177 | "t1_func1", | |
5c58de74 PA |
4178 | }; |
4179 | ||
a3c5fafd | 4180 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4181 | "t1_func", expected_syms)); |
4182 | } | |
4183 | ||
4184 | /* Check that the increment-last-char in the name matching algorithm | |
4185 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4186 | { | |
4187 | static const char *expected_syms1[] = { | |
4188 | "\377", | |
4189 | "\377\377123", | |
4190 | }; | |
a3c5fafd | 4191 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4192 | "\377", expected_syms1)); |
4193 | ||
4194 | static const char *expected_syms2[] = { | |
4195 | "\377\377123", | |
4196 | }; | |
a3c5fafd | 4197 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4198 | "\377\377", expected_syms2)); |
4199 | } | |
4200 | } | |
4201 | ||
4202 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4203 | ||
4204 | static void | |
4205 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4206 | { |
4207 | mock_mapped_index mock_index (test_symbols); | |
4208 | ||
4209 | /* We let all tests run until the end even if some fails, for debug | |
4210 | convenience. */ | |
4211 | bool any_mismatch = false; | |
4212 | ||
4213 | /* Create the expected symbols list (an initializer_list). Needed | |
4214 | because lists have commas, and we need to pass them to CHECK, | |
4215 | which is a macro. */ | |
4216 | #define EXPECT(...) { __VA_ARGS__ } | |
4217 | ||
4218 | /* Wrapper for check_match that passes down the current | |
4219 | __FILE__/__LINE__. */ | |
4220 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4221 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4222 | mock_index, \ | |
4223 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
4224 | EXPECTED_LIST) | |
4225 | ||
4226 | /* Identity checks. */ | |
4227 | for (const char *sym : test_symbols) | |
4228 | { | |
4229 | /* Should be able to match all existing symbols. */ | |
4230 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4231 | EXPECT (sym)); | |
4232 | ||
4233 | /* Should be able to match all existing symbols with | |
4234 | parameters. */ | |
4235 | std::string with_params = std::string (sym) + "(int)"; | |
4236 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4237 | EXPECT (sym)); | |
4238 | ||
4239 | /* Should be able to match all existing symbols with | |
4240 | parameters and qualifiers. */ | |
4241 | with_params = std::string (sym) + " ( int ) const"; | |
4242 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4243 | EXPECT (sym)); | |
4244 | ||
4245 | /* This should really find sym, but cp-name-parser.y doesn't | |
4246 | know about lvalue/rvalue qualifiers yet. */ | |
4247 | with_params = std::string (sym) + " ( int ) &&"; | |
4248 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4249 | {}); | |
4250 | } | |
4251 | ||
e1ef7d7a PA |
4252 | /* Check that the name matching algorithm for completion doesn't get |
4253 | confused with Latin1 'ÿ' / 0xff. */ | |
4254 | { | |
4255 | static const char str[] = "\377"; | |
4256 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4257 | EXPECT ("\377", "\377\377123")); | |
4258 | } | |
4259 | ||
4260 | /* Check that the increment-last-char in the matching algorithm for | |
4261 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4262 | { | |
4263 | static const char str[] = "t1_func"; | |
4264 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4265 | EXPECT ("t1_func", "t1_func1")); | |
4266 | } | |
4267 | ||
c62446b1 PA |
4268 | /* Check that completion mode works at each prefix of the expected |
4269 | symbol name. */ | |
4270 | { | |
4271 | static const char str[] = "function(int)"; | |
4272 | size_t len = strlen (str); | |
4273 | std::string lookup; | |
4274 | ||
4275 | for (size_t i = 1; i < len; i++) | |
4276 | { | |
4277 | lookup.assign (str, i); | |
4278 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4279 | EXPECT ("function")); | |
4280 | } | |
4281 | } | |
4282 | ||
4283 | /* While "w" is a prefix of both components, the match function | |
4284 | should still only be called once. */ | |
4285 | { | |
4286 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4287 | EXPECT ("w1::w2")); | |
a20714ff PA |
4288 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4289 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4290 | } |
4291 | ||
4292 | /* Same, with a "complicated" symbol. */ | |
4293 | { | |
4294 | static const char str[] = Z_SYM_NAME; | |
4295 | size_t len = strlen (str); | |
4296 | std::string lookup; | |
4297 | ||
4298 | for (size_t i = 1; i < len; i++) | |
4299 | { | |
4300 | lookup.assign (str, i); | |
4301 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4302 | EXPECT (Z_SYM_NAME)); | |
4303 | } | |
4304 | } | |
4305 | ||
4306 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4307 | { | |
4308 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4309 | {}); | |
4310 | } | |
4311 | ||
4312 | /* A complete symbol with parameters matches any overload, since the | |
4313 | index has no overload info. */ | |
4314 | { | |
4315 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4316 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4317 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4318 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4319 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4320 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4321 | } |
4322 | ||
4323 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4324 | template argument list. */ | |
4325 | { | |
4326 | static const char expected[] = "ns::foo<int>"; | |
4327 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4328 | EXPECT (expected)); | |
a20714ff PA |
4329 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4330 | EXPECT (expected)); | |
c62446b1 PA |
4331 | } |
4332 | ||
4333 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4334 | template argument list that includes a pointer. */ | |
4335 | { | |
4336 | static const char expected[] = "ns::foo<char*>"; | |
4337 | /* Try both completion and non-completion modes. */ | |
4338 | static const bool completion_mode[2] = {false, true}; | |
4339 | for (size_t i = 0; i < 2; i++) | |
4340 | { | |
4341 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4342 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4343 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4344 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4345 | |
4346 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4347 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4348 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4349 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4350 | } |
4351 | } | |
4352 | ||
4353 | { | |
4354 | /* Check method qualifiers are ignored. */ | |
4355 | static const char expected[] = "ns::foo<char*>"; | |
4356 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4357 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4358 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4359 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4360 | CHECK_MATCH ("foo < char * > ( int ) const", |
4361 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4362 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4363 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4364 | } |
4365 | ||
4366 | /* Test lookup names that don't match anything. */ | |
4367 | { | |
a20714ff PA |
4368 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4369 | {}); | |
4370 | ||
c62446b1 PA |
4371 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4372 | {}); | |
4373 | } | |
4374 | ||
a20714ff PA |
4375 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4376 | which should not be confused with a parameter list. */ | |
4377 | { | |
4378 | static const char *syms[] = { | |
4379 | "A::B::C", | |
4380 | "B::C", | |
4381 | "C", | |
4382 | "A :: B :: C ( int )", | |
4383 | "B :: C ( int )", | |
4384 | "C ( int )", | |
4385 | }; | |
4386 | ||
4387 | for (const char *s : syms) | |
4388 | { | |
4389 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4390 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4391 | } | |
4392 | } | |
4393 | ||
4394 | { | |
4395 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4396 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4397 | EXPECT (expected)); | |
4398 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4399 | EXPECT (expected)); | |
4400 | } | |
4401 | ||
c62446b1 PA |
4402 | SELF_CHECK (!any_mismatch); |
4403 | ||
4404 | #undef EXPECT | |
4405 | #undef CHECK_MATCH | |
4406 | } | |
4407 | ||
5c58de74 PA |
4408 | static void |
4409 | run_test () | |
4410 | { | |
4411 | test_mapped_index_find_name_component_bounds (); | |
4412 | test_dw2_expand_symtabs_matching_symbol (); | |
4413 | } | |
4414 | ||
c62446b1 PA |
4415 | }} // namespace selftests::dw2_expand_symtabs_matching |
4416 | ||
4417 | #endif /* GDB_SELF_TEST */ | |
4418 | ||
4b514bc8 JK |
4419 | /* If FILE_MATCHER is NULL or if PER_CU has |
4420 | dwarf2_per_cu_quick_data::MARK set (see | |
4421 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4422 | EXPANSION_NOTIFY on it. */ | |
4423 | ||
4424 | static void | |
4425 | dw2_expand_symtabs_matching_one | |
4426 | (struct dwarf2_per_cu_data *per_cu, | |
4427 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
4428 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4429 | { | |
4430 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4431 | { | |
4432 | bool symtab_was_null | |
4433 | = (per_cu->v.quick->compunit_symtab == NULL); | |
4434 | ||
58f0c718 | 4435 | dw2_instantiate_symtab (per_cu, false); |
4b514bc8 JK |
4436 | |
4437 | if (expansion_notify != NULL | |
4438 | && symtab_was_null | |
4439 | && per_cu->v.quick->compunit_symtab != NULL) | |
4440 | expansion_notify (per_cu->v.quick->compunit_symtab); | |
4441 | } | |
4442 | } | |
4443 | ||
3f563c84 PA |
4444 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4445 | matched, to expand corresponding CUs that were marked. IDX is the | |
4446 | index of the symbol name that matched. */ | |
4447 | ||
4448 | static void | |
4449 | dw2_expand_marked_cus | |
ed2dc618 | 4450 | (struct dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, |
3f563c84 PA |
4451 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4452 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4453 | search_domain kind) | |
4454 | { | |
3f563c84 PA |
4455 | offset_type *vec, vec_len, vec_idx; |
4456 | bool global_seen = false; | |
ed2dc618 | 4457 | mapped_index &index = *dwarf2_per_objfile->index_table; |
3f563c84 | 4458 | |
61920122 | 4459 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 4460 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
4461 | vec_len = MAYBE_SWAP (vec[0]); |
4462 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4463 | { | |
61920122 PA |
4464 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
4465 | /* This value is only valid for index versions >= 7. */ | |
4466 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4467 | gdb_index_symbol_kind symbol_kind = | |
4468 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4469 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4470 | /* Only check the symbol attributes if they're present. | |
4471 | Indices prior to version 7 don't record them, | |
4472 | and indices >= 7 may elide them for certain symbols | |
4473 | (gold does this). */ | |
4474 | int attrs_valid = | |
4475 | (index.version >= 7 | |
4476 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4477 | ||
4478 | /* Work around gold/15646. */ | |
4479 | if (attrs_valid) | |
9291a0cd | 4480 | { |
61920122 PA |
4481 | if (!is_static && global_seen) |
4482 | continue; | |
4483 | if (!is_static) | |
4484 | global_seen = true; | |
4485 | } | |
3190f0c6 | 4486 | |
61920122 PA |
4487 | /* Only check the symbol's kind if it has one. */ |
4488 | if (attrs_valid) | |
4489 | { | |
4490 | switch (kind) | |
8943b874 | 4491 | { |
61920122 PA |
4492 | case VARIABLES_DOMAIN: |
4493 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4494 | continue; | |
4495 | break; | |
4496 | case FUNCTIONS_DOMAIN: | |
4497 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4498 | continue; |
61920122 PA |
4499 | break; |
4500 | case TYPES_DOMAIN: | |
4501 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4502 | continue; | |
4503 | break; | |
59c35742 AB |
4504 | case MODULES_DOMAIN: |
4505 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4506 | continue; | |
4507 | break; | |
61920122 PA |
4508 | default: |
4509 | break; | |
8943b874 | 4510 | } |
61920122 | 4511 | } |
8943b874 | 4512 | |
61920122 | 4513 | /* Don't crash on bad data. */ |
b76e467d | 4514 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4515 | + dwarf2_per_objfile->all_type_units.size ())) |
61920122 | 4516 | { |
b98664d3 | 4517 | complaint (_(".gdb_index entry has bad CU index" |
ed2dc618 SM |
4518 | " [in module %s]"), |
4519 | objfile_name (dwarf2_per_objfile->objfile)); | |
61920122 PA |
4520 | continue; |
4521 | } | |
4522 | ||
ff4c9fec | 4523 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
4b514bc8 JK |
4524 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, |
4525 | expansion_notify); | |
61920122 PA |
4526 | } |
4527 | } | |
4528 | ||
4b514bc8 JK |
4529 | /* If FILE_MATCHER is non-NULL, set all the |
4530 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4531 | that match FILE_MATCHER. */ | |
4532 | ||
61920122 | 4533 | static void |
4b514bc8 | 4534 | dw_expand_symtabs_matching_file_matcher |
ed2dc618 SM |
4535 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4536 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) | |
61920122 | 4537 | { |
4b514bc8 | 4538 | if (file_matcher == NULL) |
61920122 PA |
4539 | return; |
4540 | ||
4b514bc8 JK |
4541 | objfile *const objfile = dwarf2_per_objfile->objfile; |
4542 | ||
4543 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, | |
4544 | htab_eq_pointer, | |
4545 | NULL, xcalloc, xfree)); | |
4546 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4547 | htab_eq_pointer, |
4548 | NULL, xcalloc, xfree)); | |
61920122 | 4549 | |
4b514bc8 JK |
4550 | /* The rule is CUs specify all the files, including those used by |
4551 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4552 | |
b76e467d | 4553 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 4554 | { |
927aa2e7 JK |
4555 | QUIT; |
4556 | ||
4557 | per_cu->v.quick->mark = 0; | |
4558 | ||
4559 | /* We only need to look at symtabs not already expanded. */ | |
4560 | if (per_cu->v.quick->compunit_symtab) | |
4561 | continue; | |
4562 | ||
b76e467d | 4563 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
4564 | if (file_data == NULL) |
4565 | continue; | |
4566 | ||
4567 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4568 | continue; | |
4569 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4570 | { | |
4571 | per_cu->v.quick->mark = 1; | |
4572 | continue; | |
4573 | } | |
4574 | ||
b76e467d | 4575 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4576 | { |
4577 | const char *this_real_name; | |
4578 | ||
4579 | if (file_matcher (file_data->file_names[j], false)) | |
4580 | { | |
4581 | per_cu->v.quick->mark = 1; | |
4582 | break; | |
4583 | } | |
4584 | ||
4585 | /* Before we invoke realpath, which can get expensive when many | |
4586 | files are involved, do a quick comparison of the basenames. */ | |
4587 | if (!basenames_may_differ | |
4588 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4589 | true)) | |
4590 | continue; | |
4591 | ||
4592 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
4593 | if (file_matcher (this_real_name, false)) | |
4594 | { | |
4595 | per_cu->v.quick->mark = 1; | |
4596 | break; | |
4597 | } | |
4598 | } | |
4599 | ||
b76e467d SM |
4600 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4601 | ? visited_found.get () | |
4602 | : visited_not_found.get (), | |
4603 | file_data, INSERT); | |
927aa2e7 JK |
4604 | *slot = file_data; |
4605 | } | |
4606 | } | |
4607 | ||
4608 | static void | |
4609 | dw2_expand_symtabs_matching | |
4610 | (struct objfile *objfile, | |
4611 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
4612 | const lookup_name_info &lookup_name, | |
4613 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4614 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4615 | enum search_domain kind) | |
4616 | { | |
ed2dc618 SM |
4617 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4618 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
4619 | |
4620 | /* index_table is NULL if OBJF_READNOW. */ | |
4621 | if (!dwarf2_per_objfile->index_table) | |
4622 | return; | |
4623 | ||
ed2dc618 | 4624 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
927aa2e7 JK |
4625 | |
4626 | mapped_index &index = *dwarf2_per_objfile->index_table; | |
4627 | ||
4628 | dw2_expand_symtabs_matching_symbol (index, lookup_name, | |
4629 | symbol_matcher, | |
4630 | kind, [&] (offset_type idx) | |
4631 | { | |
ed2dc618 | 4632 | dw2_expand_marked_cus (dwarf2_per_objfile, idx, file_matcher, |
927aa2e7 | 4633 | expansion_notify, kind); |
3b00ef10 | 4634 | return true; |
927aa2e7 JK |
4635 | }); |
4636 | } | |
4637 | ||
4638 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
4639 | symtab. */ | |
4640 | ||
4641 | static struct compunit_symtab * | |
4642 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4643 | CORE_ADDR pc) | |
4644 | { | |
4645 | int i; | |
4646 | ||
4647 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
4648 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4649 | return cust; | |
4650 | ||
4651 | if (cust->includes == NULL) | |
4652 | return NULL; | |
4653 | ||
4654 | for (i = 0; cust->includes[i]; ++i) | |
4655 | { | |
4656 | struct compunit_symtab *s = cust->includes[i]; | |
4657 | ||
4658 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
4659 | if (s != NULL) | |
4660 | return s; | |
4661 | } | |
4662 | ||
4663 | return NULL; | |
4664 | } | |
4665 | ||
4666 | static struct compunit_symtab * | |
4667 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4668 | struct bound_minimal_symbol msymbol, | |
4669 | CORE_ADDR pc, | |
4670 | struct obj_section *section, | |
4671 | int warn_if_readin) | |
4672 | { | |
4673 | struct dwarf2_per_cu_data *data; | |
4674 | struct compunit_symtab *result; | |
4675 | ||
d320c2b5 | 4676 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
4677 | return NULL; |
4678 | ||
b3b3bada | 4679 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
d320c2b5 TT |
4680 | data = (struct dwarf2_per_cu_data *) addrmap_find |
4681 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
4682 | if (!data) |
4683 | return NULL; | |
4684 | ||
4685 | if (warn_if_readin && data->v.quick->compunit_symtab) | |
4686 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), | |
4687 | paddress (get_objfile_arch (objfile), pc)); | |
4688 | ||
4689 | result | |
58f0c718 TT |
4690 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data, |
4691 | false), | |
927aa2e7 JK |
4692 | pc); |
4693 | gdb_assert (result != NULL); | |
4694 | return result; | |
4695 | } | |
4696 | ||
4697 | static void | |
4698 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
4699 | void *data, int need_fullname) | |
4700 | { | |
ed2dc618 SM |
4701 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4702 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
4703 | |
4704 | if (!dwarf2_per_objfile->filenames_cache) | |
4705 | { | |
4706 | dwarf2_per_objfile->filenames_cache.emplace (); | |
4707 | ||
4708 | htab_up visited (htab_create_alloc (10, | |
4709 | htab_hash_pointer, htab_eq_pointer, | |
4710 | NULL, xcalloc, xfree)); | |
4711 | ||
4712 | /* The rule is CUs specify all the files, including those used | |
4713 | by any TU, so there's no need to scan TUs here. We can | |
4714 | ignore file names coming from already-expanded CUs. */ | |
4715 | ||
b76e467d | 4716 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 4717 | { |
927aa2e7 JK |
4718 | if (per_cu->v.quick->compunit_symtab) |
4719 | { | |
4720 | void **slot = htab_find_slot (visited.get (), | |
4721 | per_cu->v.quick->file_names, | |
4722 | INSERT); | |
4723 | ||
4724 | *slot = per_cu->v.quick->file_names; | |
4725 | } | |
4726 | } | |
4727 | ||
b76e467d | 4728 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 4729 | { |
927aa2e7 JK |
4730 | /* We only need to look at symtabs not already expanded. */ |
4731 | if (per_cu->v.quick->compunit_symtab) | |
4732 | continue; | |
4733 | ||
b76e467d | 4734 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
4735 | if (file_data == NULL) |
4736 | continue; | |
4737 | ||
b76e467d | 4738 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
4739 | if (*slot) |
4740 | { | |
4741 | /* Already visited. */ | |
4742 | continue; | |
4743 | } | |
4744 | *slot = file_data; | |
4745 | ||
4746 | for (int j = 0; j < file_data->num_file_names; ++j) | |
4747 | { | |
4748 | const char *filename = file_data->file_names[j]; | |
4749 | dwarf2_per_objfile->filenames_cache->seen (filename); | |
4750 | } | |
4751 | } | |
4752 | } | |
4753 | ||
4754 | dwarf2_per_objfile->filenames_cache->traverse ([&] (const char *filename) | |
4755 | { | |
4756 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
4757 | ||
4758 | if (need_fullname) | |
4759 | this_real_name = gdb_realpath (filename); | |
4760 | (*fun) (filename, this_real_name.get (), data); | |
4761 | }); | |
4762 | } | |
4763 | ||
4764 | static int | |
4765 | dw2_has_symbols (struct objfile *objfile) | |
4766 | { | |
4767 | return 1; | |
4768 | } | |
4769 | ||
4770 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4771 | { | |
4772 | dw2_has_symbols, | |
4773 | dw2_find_last_source_symtab, | |
4774 | dw2_forget_cached_source_info, | |
4775 | dw2_map_symtabs_matching_filename, | |
4776 | dw2_lookup_symbol, | |
4777 | dw2_print_stats, | |
4778 | dw2_dump, | |
927aa2e7 JK |
4779 | dw2_expand_symtabs_for_function, |
4780 | dw2_expand_all_symtabs, | |
4781 | dw2_expand_symtabs_with_fullname, | |
4782 | dw2_map_matching_symbols, | |
4783 | dw2_expand_symtabs_matching, | |
4784 | dw2_find_pc_sect_compunit_symtab, | |
4785 | NULL, | |
4786 | dw2_map_symbol_filenames | |
4787 | }; | |
4788 | ||
4789 | /* DWARF-5 debug_names reader. */ | |
4790 | ||
4791 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
4792 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
4793 | ||
4794 | /* A helper function that reads the .debug_names section in SECTION | |
4795 | and fills in MAP. FILENAME is the name of the file containing the | |
4796 | section; it is used for error reporting. | |
4797 | ||
4798 | Returns true if all went well, false otherwise. */ | |
4799 | ||
4800 | static bool | |
4801 | read_debug_names_from_section (struct objfile *objfile, | |
4802 | const char *filename, | |
4803 | struct dwarf2_section_info *section, | |
4804 | mapped_debug_names &map) | |
4805 | { | |
96b79293 | 4806 | if (section->empty ()) |
927aa2e7 JK |
4807 | return false; |
4808 | ||
4809 | /* Older elfutils strip versions could keep the section in the main | |
4810 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 4811 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
4812 | return false; |
4813 | ||
96b79293 | 4814 | section->read (objfile); |
927aa2e7 JK |
4815 | |
4816 | map.dwarf5_byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
4817 | ||
4818 | const gdb_byte *addr = section->buffer; | |
4819 | ||
96b79293 | 4820 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
4821 | |
4822 | unsigned int bytes_read; | |
4823 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
4824 | addr += bytes_read; | |
4825 | ||
4826 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
4827 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
4828 | if (bytes_read + length != section->size) | |
4829 | { | |
4830 | /* There may be multiple per-CU indices. */ | |
4831 | warning (_("Section .debug_names in %s length %s does not match " | |
4832 | "section length %s, ignoring .debug_names."), | |
4833 | filename, plongest (bytes_read + length), | |
4834 | pulongest (section->size)); | |
4835 | return false; | |
4836 | } | |
4837 | ||
4838 | /* The version number. */ | |
4839 | uint16_t version = read_2_bytes (abfd, addr); | |
4840 | addr += 2; | |
4841 | if (version != 5) | |
4842 | { | |
4843 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
4844 | "ignoring .debug_names."), | |
4845 | filename, version); | |
4846 | return false; | |
4847 | } | |
4848 | ||
4849 | /* Padding. */ | |
4850 | uint16_t padding = read_2_bytes (abfd, addr); | |
4851 | addr += 2; | |
4852 | if (padding != 0) | |
4853 | { | |
4854 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
4855 | "ignoring .debug_names."), | |
4856 | filename, padding); | |
4857 | return false; | |
4858 | } | |
4859 | ||
4860 | /* comp_unit_count - The number of CUs in the CU list. */ | |
4861 | map.cu_count = read_4_bytes (abfd, addr); | |
4862 | addr += 4; | |
4863 | ||
4864 | /* local_type_unit_count - The number of TUs in the local TU | |
4865 | list. */ | |
4866 | map.tu_count = read_4_bytes (abfd, addr); | |
4867 | addr += 4; | |
4868 | ||
4869 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
4870 | list. */ | |
4871 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
4872 | addr += 4; | |
4873 | if (foreign_tu_count != 0) | |
4874 | { | |
4875 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
4876 | "ignoring .debug_names."), | |
4877 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
4878 | return false; | |
4879 | } | |
4880 | ||
4881 | /* bucket_count - The number of hash buckets in the hash lookup | |
4882 | table. */ | |
4883 | map.bucket_count = read_4_bytes (abfd, addr); | |
4884 | addr += 4; | |
4885 | ||
4886 | /* name_count - The number of unique names in the index. */ | |
4887 | map.name_count = read_4_bytes (abfd, addr); | |
4888 | addr += 4; | |
4889 | ||
4890 | /* abbrev_table_size - The size in bytes of the abbreviations | |
4891 | table. */ | |
4892 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
4893 | addr += 4; | |
4894 | ||
4895 | /* augmentation_string_size - The size in bytes of the augmentation | |
4896 | string. This value is rounded up to a multiple of 4. */ | |
4897 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
4898 | addr += 4; | |
4899 | map.augmentation_is_gdb = ((augmentation_string_size | |
4900 | == sizeof (dwarf5_augmentation)) | |
4901 | && memcmp (addr, dwarf5_augmentation, | |
4902 | sizeof (dwarf5_augmentation)) == 0); | |
4903 | augmentation_string_size += (-augmentation_string_size) & 3; | |
4904 | addr += augmentation_string_size; | |
4905 | ||
4906 | /* List of CUs */ | |
4907 | map.cu_table_reordered = addr; | |
4908 | addr += map.cu_count * map.offset_size; | |
4909 | ||
4910 | /* List of Local TUs */ | |
4911 | map.tu_table_reordered = addr; | |
4912 | addr += map.tu_count * map.offset_size; | |
4913 | ||
4914 | /* Hash Lookup Table */ | |
4915 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
4916 | addr += map.bucket_count * 4; | |
4917 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
4918 | addr += map.name_count * 4; | |
4919 | ||
4920 | /* Name Table */ | |
4921 | map.name_table_string_offs_reordered = addr; | |
4922 | addr += map.name_count * map.offset_size; | |
4923 | map.name_table_entry_offs_reordered = addr; | |
4924 | addr += map.name_count * map.offset_size; | |
4925 | ||
4926 | const gdb_byte *abbrev_table_start = addr; | |
4927 | for (;;) | |
4928 | { | |
927aa2e7 JK |
4929 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
4930 | addr += bytes_read; | |
4931 | if (index_num == 0) | |
4932 | break; | |
4933 | ||
4934 | const auto insertpair | |
4935 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
4936 | if (!insertpair.second) | |
4937 | { | |
4938 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
4939 | "ignoring .debug_names."), | |
4940 | filename, pulongest (index_num)); | |
4941 | return false; | |
4942 | } | |
4943 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
4944 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4945 | addr += bytes_read; | |
4946 | ||
4947 | for (;;) | |
4948 | { | |
4949 | mapped_debug_names::index_val::attr attr; | |
4950 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4951 | addr += bytes_read; | |
4952 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4953 | addr += bytes_read; | |
4954 | if (attr.form == DW_FORM_implicit_const) | |
4955 | { | |
4956 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
4957 | &bytes_read); | |
4958 | addr += bytes_read; | |
4959 | } | |
4960 | if (attr.dw_idx == 0 && attr.form == 0) | |
4961 | break; | |
4962 | indexval.attr_vec.push_back (std::move (attr)); | |
4963 | } | |
4964 | } | |
4965 | if (addr != abbrev_table_start + abbrev_table_size) | |
4966 | { | |
4967 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
4968 | "of size %s vs. written as %u, ignoring .debug_names."), |
4969 | filename, plongest (addr - abbrev_table_start), | |
4970 | abbrev_table_size); | |
927aa2e7 JK |
4971 | return false; |
4972 | } | |
4973 | map.entry_pool = addr; | |
4974 | ||
4975 | return true; | |
4976 | } | |
4977 | ||
4978 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
4979 | list. */ | |
4980 | ||
4981 | static void | |
ed2dc618 | 4982 | create_cus_from_debug_names_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
4983 | const mapped_debug_names &map, |
4984 | dwarf2_section_info §ion, | |
b76e467d | 4985 | bool is_dwz) |
927aa2e7 JK |
4986 | { |
4987 | sect_offset sect_off_prev; | |
4988 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
4989 | { | |
4990 | sect_offset sect_off_next; | |
4991 | if (i < map.cu_count) | |
4992 | { | |
4993 | sect_off_next | |
4994 | = (sect_offset) (extract_unsigned_integer | |
4995 | (map.cu_table_reordered + i * map.offset_size, | |
4996 | map.offset_size, | |
4997 | map.dwarf5_byte_order)); | |
4998 | } | |
4999 | else | |
5000 | sect_off_next = (sect_offset) section.size; | |
5001 | if (i >= 1) | |
5002 | { | |
5003 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5004 | dwarf2_per_cu_data *per_cu |
ed2dc618 | 5005 | = create_cu_from_index_list (dwarf2_per_objfile, §ion, is_dwz, |
927aa2e7 | 5006 | sect_off_prev, length); |
b76e467d | 5007 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5008 | } |
5009 | sect_off_prev = sect_off_next; | |
5010 | } | |
5011 | } | |
5012 | ||
5013 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5014 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5015 | |
5016 | static void | |
ed2dc618 | 5017 | create_cus_from_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5018 | const mapped_debug_names &map, |
5019 | const mapped_debug_names &dwz_map) | |
5020 | { | |
b76e467d SM |
5021 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
5022 | dwarf2_per_objfile->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5023 | |
ed2dc618 SM |
5024 | create_cus_from_debug_names_list (dwarf2_per_objfile, map, |
5025 | dwarf2_per_objfile->info, | |
b76e467d | 5026 | false /* is_dwz */); |
927aa2e7 JK |
5027 | |
5028 | if (dwz_map.cu_count == 0) | |
5029 | return; | |
5030 | ||
ed2dc618 SM |
5031 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
5032 | create_cus_from_debug_names_list (dwarf2_per_objfile, dwz_map, dwz->info, | |
b76e467d | 5033 | true /* is_dwz */); |
927aa2e7 JK |
5034 | } |
5035 | ||
5036 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5037 | elements of all the CUs and return true. Otherwise, return false. */ | |
5038 | ||
5039 | static bool | |
ed2dc618 | 5040 | dwarf2_read_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile) |
927aa2e7 | 5041 | { |
22ca247e TT |
5042 | std::unique_ptr<mapped_debug_names> map |
5043 | (new mapped_debug_names (dwarf2_per_objfile)); | |
ed2dc618 SM |
5044 | mapped_debug_names dwz_map (dwarf2_per_objfile); |
5045 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
927aa2e7 JK |
5046 | |
5047 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
5048 | &dwarf2_per_objfile->debug_names, | |
22ca247e | 5049 | *map)) |
927aa2e7 JK |
5050 | return false; |
5051 | ||
5052 | /* Don't use the index if it's empty. */ | |
22ca247e | 5053 | if (map->name_count == 0) |
927aa2e7 JK |
5054 | return false; |
5055 | ||
5056 | /* If there is a .dwz file, read it so we can get its CU list as | |
5057 | well. */ | |
ed2dc618 | 5058 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
927aa2e7 JK |
5059 | if (dwz != NULL) |
5060 | { | |
5061 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5062 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5063 | &dwz->debug_names, dwz_map)) |
5064 | { | |
5065 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5066 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5067 | return false; |
5068 | } | |
5069 | } | |
5070 | ||
22ca247e | 5071 | create_cus_from_debug_names (dwarf2_per_objfile, *map, dwz_map); |
927aa2e7 | 5072 | |
22ca247e | 5073 | if (map->tu_count != 0) |
927aa2e7 JK |
5074 | { |
5075 | /* We can only handle a single .debug_types when we have an | |
5076 | index. */ | |
fd5866f6 | 5077 | if (dwarf2_per_objfile->types.size () != 1) |
927aa2e7 JK |
5078 | return false; |
5079 | ||
fd5866f6 | 5080 | dwarf2_section_info *section = &dwarf2_per_objfile->types[0]; |
927aa2e7 JK |
5081 | |
5082 | create_signatured_type_table_from_debug_names | |
22ca247e | 5083 | (dwarf2_per_objfile, *map, section, &dwarf2_per_objfile->abbrev); |
927aa2e7 JK |
5084 | } |
5085 | ||
ed2dc618 SM |
5086 | create_addrmap_from_aranges (dwarf2_per_objfile, |
5087 | &dwarf2_per_objfile->debug_aranges); | |
927aa2e7 | 5088 | |
22ca247e | 5089 | dwarf2_per_objfile->debug_names_table = std::move (map); |
927aa2e7 JK |
5090 | dwarf2_per_objfile->using_index = 1; |
5091 | dwarf2_per_objfile->quick_file_names_table = | |
b76e467d | 5092 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
927aa2e7 JK |
5093 | |
5094 | return true; | |
5095 | } | |
5096 | ||
927aa2e7 JK |
5097 | /* Type used to manage iterating over all CUs looking for a symbol for |
5098 | .debug_names. */ | |
5099 | ||
5100 | class dw2_debug_names_iterator | |
5101 | { | |
5102 | public: | |
927aa2e7 | 5103 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5104 | gdb::optional<block_enum> block_index, |
5105 | domain_enum domain, | |
927aa2e7 | 5106 | const char *name) |
2b79f376 | 5107 | : m_map (map), m_block_index (block_index), m_domain (domain), |
927aa2e7 JK |
5108 | m_addr (find_vec_in_debug_names (map, name)) |
5109 | {} | |
5110 | ||
5111 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5112 | search_domain search, uint32_t namei) | |
5113 | : m_map (map), | |
5114 | m_search (search), | |
5115 | m_addr (find_vec_in_debug_names (map, namei)) | |
5116 | {} | |
5117 | ||
3b00ef10 TT |
5118 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5119 | block_enum block_index, domain_enum domain, | |
5120 | uint32_t namei) | |
5121 | : m_map (map), m_block_index (block_index), m_domain (domain), | |
5122 | m_addr (find_vec_in_debug_names (map, namei)) | |
5123 | {} | |
5124 | ||
927aa2e7 JK |
5125 | /* Return the next matching CU or NULL if there are no more. */ |
5126 | dwarf2_per_cu_data *next (); | |
5127 | ||
5128 | private: | |
5129 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5130 | const char *name); | |
5131 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5132 | uint32_t namei); | |
5133 | ||
5134 | /* The internalized form of .debug_names. */ | |
5135 | const mapped_debug_names &m_map; | |
5136 | ||
2b79f376 SM |
5137 | /* If set, only look for symbols that match that block. Valid values are |
5138 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5139 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5140 | |
5141 | /* The kind of symbol we're looking for. */ | |
5142 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5143 | const search_domain m_search = ALL_DOMAIN; | |
5144 | ||
5145 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5146 | not found. */ | |
5147 | const gdb_byte *m_addr; | |
5148 | }; | |
5149 | ||
5150 | const char * | |
5151 | mapped_debug_names::namei_to_name (uint32_t namei) const | |
5152 | { | |
5153 | const ULONGEST namei_string_offs | |
5154 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5155 | + namei * offset_size), | |
5156 | offset_size, | |
5157 | dwarf5_byte_order); | |
5158 | return read_indirect_string_at_offset | |
ed2dc618 | 5159 | (dwarf2_per_objfile, dwarf2_per_objfile->objfile->obfd, namei_string_offs); |
927aa2e7 JK |
5160 | } |
5161 | ||
5162 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5163 | found, return pointer to its pool data. If NAME cannot be found, | |
5164 | return NULL. */ | |
5165 | ||
5166 | const gdb_byte * | |
5167 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5168 | (const mapped_debug_names &map, const char *name) | |
5169 | { | |
5170 | int (*cmp) (const char *, const char *); | |
5171 | ||
54ee4252 | 5172 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5173 | if (current_language->la_language == language_cplus |
5174 | || current_language->la_language == language_fortran | |
5175 | || current_language->la_language == language_d) | |
5176 | { | |
5177 | /* NAME is already canonical. Drop any qualifiers as | |
5178 | .debug_names does not contain any. */ | |
5179 | ||
5180 | if (strchr (name, '(') != NULL) | |
5181 | { | |
54ee4252 | 5182 | without_params = cp_remove_params (name); |
927aa2e7 | 5183 | if (without_params != NULL) |
54ee4252 | 5184 | name = without_params.get (); |
927aa2e7 JK |
5185 | } |
5186 | } | |
5187 | ||
5188 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5189 | ||
5190 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5191 | uint32_t namei | |
5192 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5193 | (map.bucket_table_reordered | |
5194 | + (full_hash % map.bucket_count)), 4, | |
5195 | map.dwarf5_byte_order); | |
5196 | if (namei == 0) | |
5197 | return NULL; | |
5198 | --namei; | |
5199 | if (namei >= map.name_count) | |
5200 | { | |
b98664d3 | 5201 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5202 | "[in module %s]"), |
5203 | namei, map.name_count, | |
ed2dc618 | 5204 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5205 | return NULL; |
5206 | } | |
5207 | ||
5208 | for (;;) | |
5209 | { | |
5210 | const uint32_t namei_full_hash | |
5211 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5212 | (map.hash_table_reordered + namei), 4, | |
5213 | map.dwarf5_byte_order); | |
5214 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5215 | return NULL; | |
5216 | ||
5217 | if (full_hash == namei_full_hash) | |
5218 | { | |
5219 | const char *const namei_string = map.namei_to_name (namei); | |
5220 | ||
5221 | #if 0 /* An expensive sanity check. */ | |
5222 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5223 | { | |
b98664d3 | 5224 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5225 | "[in module %s]"), |
5226 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5227 | return NULL; | |
5228 | } | |
5229 | #endif | |
5230 | ||
5231 | if (cmp (namei_string, name) == 0) | |
5232 | { | |
5233 | const ULONGEST namei_entry_offs | |
5234 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5235 | + namei * map.offset_size), | |
5236 | map.offset_size, map.dwarf5_byte_order); | |
5237 | return map.entry_pool + namei_entry_offs; | |
5238 | } | |
5239 | } | |
5240 | ||
5241 | ++namei; | |
5242 | if (namei >= map.name_count) | |
5243 | return NULL; | |
5244 | } | |
5245 | } | |
5246 | ||
5247 | const gdb_byte * | |
5248 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5249 | (const mapped_debug_names &map, uint32_t namei) | |
5250 | { | |
5251 | if (namei >= map.name_count) | |
5252 | { | |
b98664d3 | 5253 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5254 | "[in module %s]"), |
5255 | namei, map.name_count, | |
ed2dc618 | 5256 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5257 | return NULL; |
5258 | } | |
5259 | ||
5260 | const ULONGEST namei_entry_offs | |
5261 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5262 | + namei * map.offset_size), | |
5263 | map.offset_size, map.dwarf5_byte_order); | |
5264 | return map.entry_pool + namei_entry_offs; | |
5265 | } | |
5266 | ||
5267 | /* See dw2_debug_names_iterator. */ | |
5268 | ||
5269 | dwarf2_per_cu_data * | |
5270 | dw2_debug_names_iterator::next () | |
5271 | { | |
5272 | if (m_addr == NULL) | |
5273 | return NULL; | |
5274 | ||
ed2dc618 SM |
5275 | struct dwarf2_per_objfile *dwarf2_per_objfile = m_map.dwarf2_per_objfile; |
5276 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5277 | bfd *const abfd = objfile->obfd; | |
927aa2e7 JK |
5278 | |
5279 | again: | |
5280 | ||
5281 | unsigned int bytes_read; | |
5282 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5283 | m_addr += bytes_read; | |
5284 | if (abbrev == 0) | |
5285 | return NULL; | |
5286 | ||
5287 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5288 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5289 | { | |
b98664d3 | 5290 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5291 | "[in module %s]"), |
ed2dc618 | 5292 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5293 | return NULL; |
5294 | } | |
5295 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5296 | enum class symbol_linkage { |
5297 | unknown, | |
5298 | static_, | |
5299 | extern_, | |
23c13d42 | 5300 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5301 | dwarf2_per_cu_data *per_cu = NULL; |
5302 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5303 | { | |
5304 | ULONGEST ull; | |
5305 | switch (attr.form) | |
5306 | { | |
5307 | case DW_FORM_implicit_const: | |
5308 | ull = attr.implicit_const; | |
5309 | break; | |
5310 | case DW_FORM_flag_present: | |
5311 | ull = 1; | |
5312 | break; | |
5313 | case DW_FORM_udata: | |
5314 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5315 | m_addr += bytes_read; | |
5316 | break; | |
5317 | default: | |
b98664d3 | 5318 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5319 | dwarf_form_name (attr.form), |
ed2dc618 | 5320 | objfile_name (objfile)); |
927aa2e7 JK |
5321 | return NULL; |
5322 | } | |
5323 | switch (attr.dw_idx) | |
5324 | { | |
5325 | case DW_IDX_compile_unit: | |
5326 | /* Don't crash on bad data. */ | |
b76e467d | 5327 | if (ull >= dwarf2_per_objfile->all_comp_units.size ()) |
927aa2e7 | 5328 | { |
b98664d3 | 5329 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5330 | " [in module %s]"), |
5331 | pulongest (ull), | |
5332 | objfile_name (dwarf2_per_objfile->objfile)); | |
5333 | continue; | |
5334 | } | |
ff4c9fec | 5335 | per_cu = dwarf2_per_objfile->get_cutu (ull); |
927aa2e7 | 5336 | break; |
8af5c486 JK |
5337 | case DW_IDX_type_unit: |
5338 | /* Don't crash on bad data. */ | |
b2bdb8cf | 5339 | if (ull >= dwarf2_per_objfile->all_type_units.size ()) |
8af5c486 | 5340 | { |
b98664d3 | 5341 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5342 | " [in module %s]"), |
5343 | pulongest (ull), | |
5344 | objfile_name (dwarf2_per_objfile->objfile)); | |
5345 | continue; | |
5346 | } | |
ff4c9fec | 5347 | per_cu = &dwarf2_per_objfile->get_tu (ull)->per_cu; |
8af5c486 | 5348 | break; |
927aa2e7 JK |
5349 | case DW_IDX_GNU_internal: |
5350 | if (!m_map.augmentation_is_gdb) | |
5351 | break; | |
23c13d42 | 5352 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5353 | break; |
5354 | case DW_IDX_GNU_external: | |
5355 | if (!m_map.augmentation_is_gdb) | |
5356 | break; | |
23c13d42 | 5357 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5358 | break; |
5359 | } | |
5360 | } | |
5361 | ||
5362 | /* Skip if already read in. */ | |
5363 | if (per_cu->v.quick->compunit_symtab) | |
5364 | goto again; | |
5365 | ||
5366 | /* Check static vs global. */ | |
23c13d42 | 5367 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5368 | { |
2b79f376 | 5369 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5370 | const bool symbol_is_static = |
5371 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5372 | if (want_static != symbol_is_static) |
2b79f376 | 5373 | goto again; |
927aa2e7 JK |
5374 | } |
5375 | ||
5376 | /* Match dw2_symtab_iter_next, symbol_kind | |
5377 | and debug_names::psymbol_tag. */ | |
5378 | switch (m_domain) | |
5379 | { | |
5380 | case VAR_DOMAIN: | |
5381 | switch (indexval.dwarf_tag) | |
5382 | { | |
5383 | case DW_TAG_variable: | |
5384 | case DW_TAG_subprogram: | |
5385 | /* Some types are also in VAR_DOMAIN. */ | |
5386 | case DW_TAG_typedef: | |
5387 | case DW_TAG_structure_type: | |
5388 | break; | |
5389 | default: | |
5390 | goto again; | |
5391 | } | |
5392 | break; | |
5393 | case STRUCT_DOMAIN: | |
5394 | switch (indexval.dwarf_tag) | |
5395 | { | |
5396 | case DW_TAG_typedef: | |
5397 | case DW_TAG_structure_type: | |
5398 | break; | |
5399 | default: | |
5400 | goto again; | |
5401 | } | |
5402 | break; | |
5403 | case LABEL_DOMAIN: | |
5404 | switch (indexval.dwarf_tag) | |
5405 | { | |
5406 | case 0: | |
5407 | case DW_TAG_variable: | |
5408 | break; | |
5409 | default: | |
5410 | goto again; | |
5411 | } | |
5412 | break; | |
59c35742 AB |
5413 | case MODULE_DOMAIN: |
5414 | switch (indexval.dwarf_tag) | |
5415 | { | |
5416 | case DW_TAG_module: | |
5417 | break; | |
5418 | default: | |
5419 | goto again; | |
5420 | } | |
5421 | break; | |
927aa2e7 JK |
5422 | default: |
5423 | break; | |
5424 | } | |
5425 | ||
5426 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5427 | debug_names::psymbol_tag. */ | |
5428 | switch (m_search) | |
4b514bc8 | 5429 | { |
927aa2e7 JK |
5430 | case VARIABLES_DOMAIN: |
5431 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5432 | { |
927aa2e7 JK |
5433 | case DW_TAG_variable: |
5434 | break; | |
5435 | default: | |
5436 | goto again; | |
4b514bc8 | 5437 | } |
927aa2e7 JK |
5438 | break; |
5439 | case FUNCTIONS_DOMAIN: | |
5440 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5441 | { |
927aa2e7 JK |
5442 | case DW_TAG_subprogram: |
5443 | break; | |
5444 | default: | |
5445 | goto again; | |
4b514bc8 | 5446 | } |
927aa2e7 JK |
5447 | break; |
5448 | case TYPES_DOMAIN: | |
5449 | switch (indexval.dwarf_tag) | |
5450 | { | |
5451 | case DW_TAG_typedef: | |
5452 | case DW_TAG_structure_type: | |
5453 | break; | |
5454 | default: | |
5455 | goto again; | |
5456 | } | |
5457 | break; | |
59c35742 AB |
5458 | case MODULES_DOMAIN: |
5459 | switch (indexval.dwarf_tag) | |
5460 | { | |
5461 | case DW_TAG_module: | |
5462 | break; | |
5463 | default: | |
5464 | goto again; | |
5465 | } | |
927aa2e7 JK |
5466 | default: |
5467 | break; | |
4b514bc8 | 5468 | } |
927aa2e7 JK |
5469 | |
5470 | return per_cu; | |
4b514bc8 | 5471 | } |
61920122 | 5472 | |
927aa2e7 | 5473 | static struct compunit_symtab * |
c7f839cb | 5474 | dw2_debug_names_lookup_symbol (struct objfile *objfile, block_enum block_index, |
927aa2e7 | 5475 | const char *name, domain_enum domain) |
4b514bc8 | 5476 | { |
ed2dc618 SM |
5477 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5478 | = get_dwarf2_per_objfile (objfile); | |
61920122 | 5479 | |
927aa2e7 JK |
5480 | const auto &mapp = dwarf2_per_objfile->debug_names_table; |
5481 | if (!mapp) | |
61920122 | 5482 | { |
927aa2e7 JK |
5483 | /* index is NULL if OBJF_READNOW. */ |
5484 | return NULL; | |
5485 | } | |
5486 | const auto &map = *mapp; | |
9291a0cd | 5487 | |
2b79f376 | 5488 | dw2_debug_names_iterator iter (map, block_index, domain, name); |
9703b513 | 5489 | |
927aa2e7 JK |
5490 | struct compunit_symtab *stab_best = NULL; |
5491 | struct dwarf2_per_cu_data *per_cu; | |
5492 | while ((per_cu = iter.next ()) != NULL) | |
5493 | { | |
5494 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 5495 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
927aa2e7 | 5496 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 5497 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 5498 | |
927aa2e7 JK |
5499 | sym = block_find_symbol (block, name, domain, |
5500 | block_find_non_opaque_type_preferred, | |
5501 | &with_opaque); | |
9703b513 | 5502 | |
927aa2e7 JK |
5503 | /* Some caution must be observed with overloaded functions and |
5504 | methods, since the index will not contain any overload | |
5505 | information (but NAME might contain it). */ | |
a3ec0bb1 | 5506 | |
927aa2e7 | 5507 | if (sym != NULL |
987012b8 | 5508 | && strcmp_iw (sym->search_name (), name) == 0) |
927aa2e7 JK |
5509 | return stab; |
5510 | if (with_opaque != NULL | |
987012b8 | 5511 | && strcmp_iw (with_opaque->search_name (), name) == 0) |
927aa2e7 | 5512 | stab_best = stab; |
9703b513 | 5513 | |
927aa2e7 | 5514 | /* Keep looking through other CUs. */ |
9703b513 TT |
5515 | } |
5516 | ||
927aa2e7 | 5517 | return stab_best; |
9703b513 TT |
5518 | } |
5519 | ||
927aa2e7 JK |
5520 | /* This dumps minimal information about .debug_names. It is called |
5521 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5522 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5523 | |
927aa2e7 JK |
5524 | static void |
5525 | dw2_debug_names_dump (struct objfile *objfile) | |
5526 | { | |
ed2dc618 SM |
5527 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5528 | = get_dwarf2_per_objfile (objfile); | |
5529 | ||
927aa2e7 JK |
5530 | gdb_assert (dwarf2_per_objfile->using_index); |
5531 | printf_filtered (".debug_names:"); | |
5532 | if (dwarf2_per_objfile->debug_names_table) | |
5533 | printf_filtered (" exists\n"); | |
5534 | else | |
5535 | printf_filtered (" faked for \"readnow\"\n"); | |
5536 | printf_filtered ("\n"); | |
9291a0cd TT |
5537 | } |
5538 | ||
9291a0cd | 5539 | static void |
927aa2e7 JK |
5540 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
5541 | const char *func_name) | |
9291a0cd | 5542 | { |
ed2dc618 SM |
5543 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5544 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 5545 | |
927aa2e7 JK |
5546 | /* dwarf2_per_objfile->debug_names_table is NULL if OBJF_READNOW. */ |
5547 | if (dwarf2_per_objfile->debug_names_table) | |
24c79950 | 5548 | { |
927aa2e7 | 5549 | const mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
24c79950 | 5550 | |
2b79f376 | 5551 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name); |
24c79950 | 5552 | |
927aa2e7 JK |
5553 | struct dwarf2_per_cu_data *per_cu; |
5554 | while ((per_cu = iter.next ()) != NULL) | |
58f0c718 | 5555 | dw2_instantiate_symtab (per_cu, false); |
927aa2e7 JK |
5556 | } |
5557 | } | |
24c79950 | 5558 | |
3b00ef10 TT |
5559 | static void |
5560 | dw2_debug_names_map_matching_symbols | |
5561 | (struct objfile *objfile, | |
5562 | const lookup_name_info &name, domain_enum domain, | |
5563 | int global, | |
5564 | gdb::function_view<symbol_found_callback_ftype> callback, | |
5565 | symbol_compare_ftype *ordered_compare) | |
5566 | { | |
5567 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
5568 | = get_dwarf2_per_objfile (objfile); | |
5569 | ||
5570 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
5571 | if (!dwarf2_per_objfile->debug_names_table) | |
5572 | return; | |
5573 | ||
5574 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; | |
5575 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; | |
5576 | ||
5577 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5578 | auto matcher = [&] (const char *symname) | |
5579 | { | |
5580 | if (ordered_compare == nullptr) | |
5581 | return true; | |
5582 | return ordered_compare (symname, match_name) == 0; | |
5583 | }; | |
5584 | ||
5585 | dw2_expand_symtabs_matching_symbol (map, name, matcher, ALL_DOMAIN, | |
5586 | [&] (offset_type namei) | |
5587 | { | |
5588 | /* The name was matched, now expand corresponding CUs that were | |
5589 | marked. */ | |
5590 | dw2_debug_names_iterator iter (map, block_kind, domain, namei); | |
5591 | ||
5592 | struct dwarf2_per_cu_data *per_cu; | |
5593 | while ((per_cu = iter.next ()) != NULL) | |
5594 | dw2_expand_symtabs_matching_one (per_cu, nullptr, nullptr); | |
5595 | return true; | |
5596 | }); | |
5597 | ||
5598 | /* It's a shame we couldn't do this inside the | |
5599 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
5600 | that have already been expanded. Instead, this loop matches what | |
5601 | the psymtab code does. */ | |
5602 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) | |
5603 | { | |
5604 | struct compunit_symtab *cust = per_cu->v.quick->compunit_symtab; | |
5605 | if (cust != nullptr) | |
5606 | { | |
5607 | const struct block *block | |
5608 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
5609 | if (!iterate_over_symbols_terminated (block, name, | |
5610 | domain, callback)) | |
5611 | break; | |
5612 | } | |
5613 | } | |
5614 | } | |
5615 | ||
927aa2e7 JK |
5616 | static void |
5617 | dw2_debug_names_expand_symtabs_matching | |
5618 | (struct objfile *objfile, | |
5619 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5620 | const lookup_name_info &lookup_name, | |
5621 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
5622 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5623 | enum search_domain kind) | |
5624 | { | |
ed2dc618 SM |
5625 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5626 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 5627 | |
927aa2e7 JK |
5628 | /* debug_names_table is NULL if OBJF_READNOW. */ |
5629 | if (!dwarf2_per_objfile->debug_names_table) | |
5630 | return; | |
9291a0cd | 5631 | |
ed2dc618 | 5632 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
24c79950 | 5633 | |
44ed8f3e | 5634 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
bbf2f4df | 5635 | |
44ed8f3e PA |
5636 | dw2_expand_symtabs_matching_symbol (map, lookup_name, |
5637 | symbol_matcher, | |
5638 | kind, [&] (offset_type namei) | |
927aa2e7 | 5639 | { |
927aa2e7 JK |
5640 | /* The name was matched, now expand corresponding CUs that were |
5641 | marked. */ | |
5642 | dw2_debug_names_iterator iter (map, kind, namei); | |
bbf2f4df | 5643 | |
927aa2e7 JK |
5644 | struct dwarf2_per_cu_data *per_cu; |
5645 | while ((per_cu = iter.next ()) != NULL) | |
5646 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, | |
5647 | expansion_notify); | |
3b00ef10 | 5648 | return true; |
44ed8f3e | 5649 | }); |
9291a0cd TT |
5650 | } |
5651 | ||
927aa2e7 | 5652 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
5653 | { |
5654 | dw2_has_symbols, | |
5655 | dw2_find_last_source_symtab, | |
5656 | dw2_forget_cached_source_info, | |
f8eba3c6 | 5657 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 5658 | dw2_debug_names_lookup_symbol, |
9291a0cd | 5659 | dw2_print_stats, |
927aa2e7 | 5660 | dw2_debug_names_dump, |
927aa2e7 | 5661 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 5662 | dw2_expand_all_symtabs, |
652a8996 | 5663 | dw2_expand_symtabs_with_fullname, |
3b00ef10 | 5664 | dw2_debug_names_map_matching_symbols, |
927aa2e7 | 5665 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 5666 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 5667 | NULL, |
9291a0cd TT |
5668 | dw2_map_symbol_filenames |
5669 | }; | |
5670 | ||
4485a1c1 SM |
5671 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5672 | to either a dwarf2_per_objfile or dwz_file object. */ | |
5673 | ||
5674 | template <typename T> | |
5675 | static gdb::array_view<const gdb_byte> | |
5676 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
5677 | { | |
5678 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
5679 | ||
96b79293 | 5680 | if (section->empty ()) |
4485a1c1 SM |
5681 | return {}; |
5682 | ||
5683 | /* Older elfutils strip versions could keep the section in the main | |
5684 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5685 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
5686 | return {}; |
5687 | ||
96b79293 | 5688 | section->read (obj); |
4485a1c1 | 5689 | |
8bebfcda PA |
5690 | /* dwarf2_section_info::size is a bfd_size_type, while |
5691 | gdb::array_view works with size_t. On 32-bit hosts, with | |
5692 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
5693 | is 32-bit. So we need an explicit narrowing conversion here. | |
5694 | This is fine, because it's impossible to allocate or mmap an | |
5695 | array/buffer larger than what size_t can represent. */ | |
5696 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
5697 | } |
5698 | ||
87d6a7aa SM |
5699 | /* Lookup the index cache for the contents of the index associated to |
5700 | DWARF2_OBJ. */ | |
5701 | ||
5702 | static gdb::array_view<const gdb_byte> | |
5703 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_objfile *dwarf2_obj) | |
5704 | { | |
5705 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
5706 | if (build_id == nullptr) | |
5707 | return {}; | |
5708 | ||
5709 | return global_index_cache.lookup_gdb_index (build_id, | |
5710 | &dwarf2_obj->index_cache_res); | |
5711 | } | |
5712 | ||
5713 | /* Same as the above, but for DWZ. */ | |
5714 | ||
5715 | static gdb::array_view<const gdb_byte> | |
5716 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
5717 | { | |
5718 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
5719 | if (build_id == nullptr) | |
5720 | return {}; | |
5721 | ||
5722 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
5723 | } | |
5724 | ||
3c0aa29a | 5725 | /* See symfile.h. */ |
9291a0cd | 5726 | |
3c0aa29a PA |
5727 | bool |
5728 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 5729 | { |
ed2dc618 SM |
5730 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5731 | = get_dwarf2_per_objfile (objfile); | |
5732 | ||
9291a0cd TT |
5733 | /* If we're about to read full symbols, don't bother with the |
5734 | indices. In this case we also don't care if some other debug | |
5735 | format is making psymtabs, because they are all about to be | |
5736 | expanded anyway. */ | |
5737 | if ((objfile->flags & OBJF_READNOW)) | |
5738 | { | |
9291a0cd | 5739 | dwarf2_per_objfile->using_index = 1; |
ed2dc618 SM |
5740 | create_all_comp_units (dwarf2_per_objfile); |
5741 | create_all_type_units (dwarf2_per_objfile); | |
b76e467d SM |
5742 | dwarf2_per_objfile->quick_file_names_table |
5743 | = create_quick_file_names_table | |
5744 | (dwarf2_per_objfile->all_comp_units.size ()); | |
9291a0cd | 5745 | |
b76e467d | 5746 | for (int i = 0; i < (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 5747 | + dwarf2_per_objfile->all_type_units.size ()); ++i) |
9291a0cd | 5748 | { |
ff4c9fec | 5749 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 5750 | |
e254ef6a DE |
5751 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
5752 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
5753 | } |
5754 | ||
5755 | /* Return 1 so that gdb sees the "quick" functions. However, | |
5756 | these functions will be no-ops because we will have expanded | |
5757 | all symtabs. */ | |
3c0aa29a PA |
5758 | *index_kind = dw_index_kind::GDB_INDEX; |
5759 | return true; | |
9291a0cd TT |
5760 | } |
5761 | ||
ed2dc618 | 5762 | if (dwarf2_read_debug_names (dwarf2_per_objfile)) |
3c0aa29a PA |
5763 | { |
5764 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
5765 | return true; | |
5766 | } | |
927aa2e7 | 5767 | |
4485a1c1 SM |
5768 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, |
5769 | get_gdb_index_contents_from_section<struct dwarf2_per_objfile>, | |
5770 | get_gdb_index_contents_from_section<dwz_file>)) | |
3c0aa29a PA |
5771 | { |
5772 | *index_kind = dw_index_kind::GDB_INDEX; | |
5773 | return true; | |
5774 | } | |
9291a0cd | 5775 | |
87d6a7aa SM |
5776 | /* ... otherwise, try to find the index in the index cache. */ |
5777 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, | |
5778 | get_gdb_index_contents_from_cache, | |
5779 | get_gdb_index_contents_from_cache_dwz)) | |
5780 | { | |
5781 | global_index_cache.hit (); | |
5782 | *index_kind = dw_index_kind::GDB_INDEX; | |
5783 | return true; | |
5784 | } | |
5785 | ||
5786 | global_index_cache.miss (); | |
3c0aa29a | 5787 | return false; |
9291a0cd TT |
5788 | } |
5789 | ||
5790 | \f | |
5791 | ||
dce234bc PP |
5792 | /* Build a partial symbol table. */ |
5793 | ||
5794 | void | |
f29dff0a | 5795 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 5796 | { |
ed2dc618 SM |
5797 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5798 | = get_dwarf2_per_objfile (objfile); | |
c9bf0622 | 5799 | |
6eee24ce | 5800 | init_psymbol_list (objfile, 1024); |
c906108c | 5801 | |
a70b8144 | 5802 | try |
c9bf0622 TT |
5803 | { |
5804 | /* This isn't really ideal: all the data we allocate on the | |
5805 | objfile's obstack is still uselessly kept around. However, | |
5806 | freeing it seems unsafe. */ | |
906768f9 | 5807 | psymtab_discarder psymtabs (objfile); |
ed2dc618 | 5808 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile); |
906768f9 | 5809 | psymtabs.keep (); |
87d6a7aa SM |
5810 | |
5811 | /* (maybe) store an index in the cache. */ | |
5812 | global_index_cache.store (dwarf2_per_objfile); | |
c9bf0622 | 5813 | } |
230d2906 | 5814 | catch (const gdb_exception_error &except) |
492d29ea PA |
5815 | { |
5816 | exception_print (gdb_stderr, except); | |
5817 | } | |
c906108c | 5818 | } |
c906108c | 5819 | |
3b80fe9b DE |
5820 | /* Find the base address of the compilation unit for range lists and |
5821 | location lists. It will normally be specified by DW_AT_low_pc. | |
5822 | In DWARF-3 draft 4, the base address could be overridden by | |
5823 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
5824 | compilation units with discontinuous ranges. */ | |
5825 | ||
5826 | static void | |
5827 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
5828 | { | |
5829 | struct attribute *attr; | |
5830 | ||
5831 | cu->base_known = 0; | |
5832 | cu->base_address = 0; | |
5833 | ||
5834 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 5835 | if (attr != nullptr) |
3b80fe9b | 5836 | { |
cd6c91b4 | 5837 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
5838 | cu->base_known = 1; |
5839 | } | |
5840 | else | |
5841 | { | |
5842 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 5843 | if (attr != nullptr) |
3b80fe9b | 5844 | { |
cd6c91b4 | 5845 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
5846 | cu->base_known = 1; |
5847 | } | |
5848 | } | |
5849 | } | |
5850 | ||
36586728 TT |
5851 | /* Helper function that returns the proper abbrev section for |
5852 | THIS_CU. */ | |
5853 | ||
5854 | static struct dwarf2_section_info * | |
5855 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
5856 | { | |
5857 | struct dwarf2_section_info *abbrev; | |
ed2dc618 | 5858 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
36586728 TT |
5859 | |
5860 | if (this_cu->is_dwz) | |
ed2dc618 | 5861 | abbrev = &dwarf2_get_dwz_file (dwarf2_per_objfile)->abbrev; |
36586728 TT |
5862 | else |
5863 | abbrev = &dwarf2_per_objfile->abbrev; | |
5864 | ||
5865 | return abbrev; | |
5866 | } | |
5867 | ||
f4dc4d17 DE |
5868 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
5869 | ||
5870 | static sect_offset | |
ed2dc618 SM |
5871 | read_abbrev_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
5872 | struct dwarf2_section_info *section, | |
9c541725 | 5873 | sect_offset sect_off) |
f4dc4d17 | 5874 | { |
96b79293 | 5875 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 5876 | const gdb_byte *info_ptr; |
ac298888 | 5877 | unsigned int initial_length_size, offset_size; |
43988095 | 5878 | uint16_t version; |
f4dc4d17 | 5879 | |
96b79293 | 5880 | section->read (dwarf2_per_objfile->objfile); |
9c541725 | 5881 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 5882 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 5883 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
5884 | info_ptr += initial_length_size; |
5885 | ||
5886 | version = read_2_bytes (abfd, info_ptr); | |
5887 | info_ptr += 2; | |
5888 | if (version >= 5) | |
5889 | { | |
5890 | /* Skip unit type and address size. */ | |
5891 | info_ptr += 2; | |
5892 | } | |
5893 | ||
24aa364d | 5894 | return (sect_offset) read_offset (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
5895 | } |
5896 | ||
aaa75496 JB |
5897 | /* Allocate a new partial symtab for file named NAME and mark this new |
5898 | partial symtab as being an include of PST. */ | |
5899 | ||
5900 | static void | |
891813be | 5901 | dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst, |
aaa75496 JB |
5902 | struct objfile *objfile) |
5903 | { | |
891813be | 5904 | dwarf2_psymtab *subpst = new dwarf2_psymtab (name, objfile); |
aaa75496 | 5905 | |
fbd9ab74 JK |
5906 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
5907 | { | |
5908 | /* It shares objfile->objfile_obstack. */ | |
5909 | subpst->dirname = pst->dirname; | |
5910 | } | |
5911 | ||
a9342b62 | 5912 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
5913 | subpst->dependencies[0] = pst; |
5914 | subpst->number_of_dependencies = 1; | |
5915 | ||
aaa75496 JB |
5916 | /* No private part is necessary for include psymtabs. This property |
5917 | can be used to differentiate between such include psymtabs and | |
10b3939b | 5918 | the regular ones. */ |
891813be | 5919 | subpst->per_cu_data = nullptr; |
aaa75496 JB |
5920 | } |
5921 | ||
5922 | /* Read the Line Number Program data and extract the list of files | |
5923 | included by the source file represented by PST. Build an include | |
d85a05f0 | 5924 | partial symtab for each of these included files. */ |
aaa75496 JB |
5925 | |
5926 | static void | |
5927 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 5928 | struct die_info *die, |
891813be | 5929 | dwarf2_psymtab *pst) |
aaa75496 | 5930 | { |
fff8551c | 5931 | line_header_up lh; |
d85a05f0 | 5932 | struct attribute *attr; |
aaa75496 | 5933 | |
d85a05f0 | 5934 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
435d3d88 | 5935 | if (attr != nullptr) |
9c541725 | 5936 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
5937 | if (lh == NULL) |
5938 | return; /* No linetable, so no includes. */ | |
5939 | ||
79748972 TT |
5940 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
5941 | that we pass in the raw text_low here; that is ok because we're | |
5942 | only decoding the line table to make include partial symtabs, and | |
5943 | so the addresses aren't really used. */ | |
4ae976d1 | 5944 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 5945 | pst->raw_text_low (), 1); |
aaa75496 JB |
5946 | } |
5947 | ||
348e048f | 5948 | static hashval_t |
52dc124a | 5949 | hash_signatured_type (const void *item) |
348e048f | 5950 | { |
9a3c8263 SM |
5951 | const struct signatured_type *sig_type |
5952 | = (const struct signatured_type *) item; | |
9a619af0 | 5953 | |
348e048f | 5954 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 5955 | return sig_type->signature; |
348e048f DE |
5956 | } |
5957 | ||
5958 | static int | |
52dc124a | 5959 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 5960 | { |
9a3c8263 SM |
5961 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
5962 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 5963 | |
348e048f DE |
5964 | return lhs->signature == rhs->signature; |
5965 | } | |
5966 | ||
1fd400ff TT |
5967 | /* Allocate a hash table for signatured types. */ |
5968 | ||
b0b6a987 | 5969 | static htab_up |
298e9637 | 5970 | allocate_signatured_type_table () |
1fd400ff | 5971 | { |
b0b6a987 TT |
5972 | return htab_up (htab_create_alloc (41, |
5973 | hash_signatured_type, | |
5974 | eq_signatured_type, | |
5975 | NULL, xcalloc, xfree)); | |
1fd400ff TT |
5976 | } |
5977 | ||
d467dd73 | 5978 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
5979 | |
5980 | static int | |
d467dd73 | 5981 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 5982 | { |
9a3c8263 | 5983 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
5984 | std::vector<signatured_type *> *all_type_units |
5985 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 5986 | |
b2bdb8cf | 5987 | all_type_units->push_back (sigt); |
1fd400ff TT |
5988 | |
5989 | return 1; | |
5990 | } | |
5991 | ||
78d4d2c5 | 5992 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
5993 | and fill them into TYPES_HTAB. It will process only type units, |
5994 | therefore DW_UT_type. */ | |
c88ee1f0 | 5995 | |
78d4d2c5 | 5996 | static void |
ed2dc618 SM |
5997 | create_debug_type_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
5998 | struct dwo_file *dwo_file, | |
b0b6a987 | 5999 | dwarf2_section_info *section, htab_up &types_htab, |
43988095 | 6000 | rcuh_kind section_kind) |
348e048f | 6001 | { |
3019eac3 | 6002 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 6003 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6004 | bfd *abfd; |
6005 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6006 | |
4bdcc0c1 DE |
6007 | abbrev_section = (dwo_file != NULL |
6008 | ? &dwo_file->sections.abbrev | |
6009 | : &dwarf2_per_objfile->abbrev); | |
6010 | ||
b4f54984 | 6011 | if (dwarf_read_debug) |
43988095 | 6012 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
96b79293 TT |
6013 | section->get_name (), |
6014 | abbrev_section->get_file_name ()); | |
09406207 | 6015 | |
96b79293 | 6016 | section->read (objfile); |
78d4d2c5 | 6017 | info_ptr = section->buffer; |
348e048f | 6018 | |
78d4d2c5 JK |
6019 | if (info_ptr == NULL) |
6020 | return; | |
348e048f | 6021 | |
78d4d2c5 JK |
6022 | /* We can't set abfd until now because the section may be empty or |
6023 | not present, in which case the bfd is unknown. */ | |
96b79293 | 6024 | abfd = section->get_bfd_owner (); |
348e048f | 6025 | |
c0ab21c2 TT |
6026 | /* We don't use cutu_reader here because we don't need to read |
6027 | any dies: the signature is in the header. */ | |
3019eac3 | 6028 | |
78d4d2c5 JK |
6029 | end_ptr = info_ptr + section->size; |
6030 | while (info_ptr < end_ptr) | |
6031 | { | |
78d4d2c5 JK |
6032 | struct signatured_type *sig_type; |
6033 | struct dwo_unit *dwo_tu; | |
6034 | void **slot; | |
6035 | const gdb_byte *ptr = info_ptr; | |
6036 | struct comp_unit_head header; | |
6037 | unsigned int length; | |
8b70b953 | 6038 | |
9c541725 | 6039 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6040 | |
a49dd8dd JK |
6041 | /* Initialize it due to a false compiler warning. */ |
6042 | header.signature = -1; | |
9c541725 | 6043 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6044 | |
78d4d2c5 JK |
6045 | /* We need to read the type's signature in order to build the hash |
6046 | table, but we don't need anything else just yet. */ | |
348e048f | 6047 | |
ed2dc618 | 6048 | ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, &header, section, |
43988095 | 6049 | abbrev_section, ptr, section_kind); |
348e048f | 6050 | |
4057dfde | 6051 | length = header.get_length (); |
6caca83c | 6052 | |
78d4d2c5 JK |
6053 | /* Skip dummy type units. */ |
6054 | if (ptr >= info_ptr + length | |
43988095 JK |
6055 | || peek_abbrev_code (abfd, ptr) == 0 |
6056 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
6057 | { |
6058 | info_ptr += length; | |
6059 | continue; | |
6060 | } | |
dee91e82 | 6061 | |
78d4d2c5 JK |
6062 | if (types_htab == NULL) |
6063 | { | |
6064 | if (dwo_file) | |
298e9637 | 6065 | types_htab = allocate_dwo_unit_table (); |
78d4d2c5 | 6066 | else |
298e9637 | 6067 | types_htab = allocate_signatured_type_table (); |
78d4d2c5 | 6068 | } |
8b70b953 | 6069 | |
78d4d2c5 JK |
6070 | if (dwo_file) |
6071 | { | |
6072 | sig_type = NULL; | |
6073 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6074 | struct dwo_unit); | |
6075 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 6076 | dwo_tu->signature = header.signature; |
9c541725 | 6077 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6078 | dwo_tu->section = section; |
9c541725 | 6079 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6080 | dwo_tu->length = length; |
6081 | } | |
6082 | else | |
6083 | { | |
6084 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6085 | The real type_offset is in the DWO file. */ | |
6086 | dwo_tu = NULL; | |
6087 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6088 | struct signatured_type); | |
43988095 | 6089 | sig_type->signature = header.signature; |
9c541725 | 6090 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
e3b94546 | 6091 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
78d4d2c5 JK |
6092 | sig_type->per_cu.is_debug_types = 1; |
6093 | sig_type->per_cu.section = section; | |
9c541725 | 6094 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6095 | sig_type->per_cu.length = length; |
6096 | } | |
6097 | ||
b0b6a987 | 6098 | slot = htab_find_slot (types_htab.get (), |
78d4d2c5 JK |
6099 | dwo_file ? (void*) dwo_tu : (void *) sig_type, |
6100 | INSERT); | |
6101 | gdb_assert (slot != NULL); | |
6102 | if (*slot != NULL) | |
6103 | { | |
9c541725 | 6104 | sect_offset dup_sect_off; |
0349ea22 | 6105 | |
3019eac3 DE |
6106 | if (dwo_file) |
6107 | { | |
78d4d2c5 JK |
6108 | const struct dwo_unit *dup_tu |
6109 | = (const struct dwo_unit *) *slot; | |
6110 | ||
9c541725 | 6111 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6112 | } |
6113 | else | |
6114 | { | |
78d4d2c5 JK |
6115 | const struct signatured_type *dup_tu |
6116 | = (const struct signatured_type *) *slot; | |
6117 | ||
9c541725 | 6118 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6119 | } |
8b70b953 | 6120 | |
b98664d3 | 6121 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6122 | " the entry at offset %s, signature %s"), |
6123 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6124 | hex_string (header.signature)); |
78d4d2c5 JK |
6125 | } |
6126 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6127 | |
78d4d2c5 | 6128 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6129 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6130 | sect_offset_str (sect_off), | |
43988095 | 6131 | hex_string (header.signature)); |
3019eac3 | 6132 | |
78d4d2c5 JK |
6133 | info_ptr += length; |
6134 | } | |
6135 | } | |
3019eac3 | 6136 | |
78d4d2c5 JK |
6137 | /* Create the hash table of all entries in the .debug_types |
6138 | (or .debug_types.dwo) section(s). | |
6139 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6140 | otherwise it is NULL. | |
b3c8eb43 | 6141 | |
78d4d2c5 | 6142 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6143 | |
78d4d2c5 | 6144 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6145 | |
78d4d2c5 | 6146 | static void |
ed2dc618 SM |
6147 | create_debug_types_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6148 | struct dwo_file *dwo_file, | |
fd5866f6 | 6149 | gdb::array_view<dwarf2_section_info> type_sections, |
b0b6a987 | 6150 | htab_up &types_htab) |
78d4d2c5 | 6151 | { |
fd5866f6 SM |
6152 | for (dwarf2_section_info §ion : type_sections) |
6153 | create_debug_type_hash_table (dwarf2_per_objfile, dwo_file, §ion, | |
ed2dc618 | 6154 | types_htab, rcuh_kind::TYPE); |
3019eac3 DE |
6155 | } |
6156 | ||
6157 | /* Create the hash table of all entries in the .debug_types section, | |
6158 | and initialize all_type_units. | |
6159 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6160 | otherwise non-zero. */ | |
6161 | ||
6162 | static int | |
ed2dc618 | 6163 | create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
3019eac3 | 6164 | { |
b0b6a987 | 6165 | htab_up types_htab; |
3019eac3 | 6166 | |
ed2dc618 SM |
6167 | create_debug_type_hash_table (dwarf2_per_objfile, NULL, |
6168 | &dwarf2_per_objfile->info, types_htab, | |
43988095 | 6169 | rcuh_kind::COMPILE); |
ed2dc618 SM |
6170 | create_debug_types_hash_table (dwarf2_per_objfile, NULL, |
6171 | dwarf2_per_objfile->types, types_htab); | |
3019eac3 DE |
6172 | if (types_htab == NULL) |
6173 | { | |
6174 | dwarf2_per_objfile->signatured_types = NULL; | |
6175 | return 0; | |
6176 | } | |
6177 | ||
b0b6a987 | 6178 | dwarf2_per_objfile->signatured_types = std::move (types_htab); |
348e048f | 6179 | |
b2bdb8cf | 6180 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
b0b6a987 TT |
6181 | dwarf2_per_objfile->all_type_units.reserve |
6182 | (htab_elements (dwarf2_per_objfile->signatured_types.get ())); | |
b2bdb8cf | 6183 | |
b0b6a987 TT |
6184 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types.get (), |
6185 | add_signatured_type_cu_to_table, | |
b2bdb8cf | 6186 | &dwarf2_per_objfile->all_type_units); |
1fd400ff | 6187 | |
348e048f DE |
6188 | return 1; |
6189 | } | |
6190 | ||
6aa5f3a6 DE |
6191 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
6192 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
6193 | Otherwise we find one. */ | |
6194 | ||
6195 | static struct signatured_type * | |
ed2dc618 SM |
6196 | add_type_unit (struct dwarf2_per_objfile *dwarf2_per_objfile, ULONGEST sig, |
6197 | void **slot) | |
6aa5f3a6 DE |
6198 | { |
6199 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6aa5f3a6 | 6200 | |
b2bdb8cf SM |
6201 | if (dwarf2_per_objfile->all_type_units.size () |
6202 | == dwarf2_per_objfile->all_type_units.capacity ()) | |
6203 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6204 | |
b2bdb8cf SM |
6205 | signatured_type *sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6206 | struct signatured_type); | |
6207 | ||
6208 | dwarf2_per_objfile->all_type_units.push_back (sig_type); | |
6aa5f3a6 DE |
6209 | sig_type->signature = sig; |
6210 | sig_type->per_cu.is_debug_types = 1; | |
6211 | if (dwarf2_per_objfile->using_index) | |
6212 | { | |
6213 | sig_type->per_cu.v.quick = | |
6214 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6215 | struct dwarf2_per_cu_quick_data); | |
6216 | } | |
6217 | ||
6218 | if (slot == NULL) | |
6219 | { | |
b0b6a987 | 6220 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types.get (), |
6aa5f3a6 DE |
6221 | sig_type, INSERT); |
6222 | } | |
6223 | gdb_assert (*slot == NULL); | |
6224 | *slot = sig_type; | |
6225 | /* The rest of sig_type must be filled in by the caller. */ | |
6226 | return sig_type; | |
6227 | } | |
6228 | ||
a2ce51a0 DE |
6229 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6230 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6231 | ||
6232 | static void | |
ed2dc618 | 6233 | fill_in_sig_entry_from_dwo_entry (struct dwarf2_per_objfile *dwarf2_per_objfile, |
a2ce51a0 DE |
6234 | struct signatured_type *sig_entry, |
6235 | struct dwo_unit *dwo_entry) | |
6236 | { | |
7ee85ab1 | 6237 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
6238 | gdb_assert (! sig_entry->per_cu.queued); |
6239 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
6240 | if (dwarf2_per_objfile->using_index) |
6241 | { | |
6242 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 6243 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
6244 | } |
6245 | else | |
6246 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6247 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6248 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6249 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6250 | gdb_assert (sig_entry->dwo_unit == NULL); |
6251 | ||
6252 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6253 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6254 | sig_entry->per_cu.length = dwo_entry->length; |
6255 | sig_entry->per_cu.reading_dwo_directly = 1; | |
e3b94546 | 6256 | sig_entry->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
a2ce51a0 DE |
6257 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6258 | sig_entry->dwo_unit = dwo_entry; | |
6259 | } | |
6260 | ||
6261 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6262 | If we haven't read the TU yet, create the signatured_type data structure |
6263 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6264 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6265 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6266 | containing that CU. Otherwise we could end up reading several other DWO | |
6267 | files (due to comdat folding) to process the transitive closure of all the | |
6268 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6269 | type signature that it needs. | |
a2ce51a0 DE |
6270 | We only do this for .gdb_index because in the psymtab case we already have |
6271 | to read all the DWOs to build the type unit groups. */ | |
6272 | ||
6273 | static struct signatured_type * | |
6274 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6275 | { | |
518817b3 SM |
6276 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6277 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 DE |
6278 | struct dwo_file *dwo_file; |
6279 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6280 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6281 | void **slot; |
a2ce51a0 DE |
6282 | |
6283 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
6284 | ||
6aa5f3a6 DE |
6285 | /* If TU skeletons have been removed then we may not have read in any |
6286 | TUs yet. */ | |
6287 | if (dwarf2_per_objfile->signatured_types == NULL) | |
298e9637 | 6288 | dwarf2_per_objfile->signatured_types = allocate_signatured_type_table (); |
a2ce51a0 DE |
6289 | |
6290 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6291 | Use the global signatured_types array to do our own comdat-folding |
6292 | of types. If this is the first time we're reading this TU, and | |
6293 | the TU has an entry in .gdb_index, replace the recorded data from | |
6294 | .gdb_index with this TU. */ | |
a2ce51a0 | 6295 | |
a2ce51a0 | 6296 | find_sig_entry.signature = sig; |
b0b6a987 | 6297 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types.get (), |
6aa5f3a6 | 6298 | &find_sig_entry, INSERT); |
9a3c8263 | 6299 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6300 | |
6301 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6302 | read. Don't reassign the global entry to point to this DWO if that's |
6303 | the case. Also note that if the TU is already being read, it may not | |
6304 | have come from a DWO, the program may be a mix of Fission-compiled | |
6305 | code and non-Fission-compiled code. */ | |
6306 | ||
6307 | /* Have we already tried to read this TU? | |
6308 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6309 | needn't exist in the global table yet). */ | |
6310 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6311 | return sig_entry; |
6312 | ||
6aa5f3a6 DE |
6313 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6314 | dwo_unit of the TU itself. */ | |
6315 | dwo_file = cu->dwo_unit->dwo_file; | |
6316 | ||
a2ce51a0 DE |
6317 | /* Ok, this is the first time we're reading this TU. */ |
6318 | if (dwo_file->tus == NULL) | |
6319 | return NULL; | |
6320 | find_dwo_entry.signature = sig; | |
b0b6a987 TT |
6321 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
6322 | &find_dwo_entry); | |
a2ce51a0 DE |
6323 | if (dwo_entry == NULL) |
6324 | return NULL; | |
6325 | ||
6aa5f3a6 DE |
6326 | /* If the global table doesn't have an entry for this TU, add one. */ |
6327 | if (sig_entry == NULL) | |
ed2dc618 | 6328 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6aa5f3a6 | 6329 | |
ed2dc618 | 6330 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6331 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6332 | return sig_entry; |
6333 | } | |
6334 | ||
a2ce51a0 DE |
6335 | /* Subroutine of lookup_signatured_type. |
6336 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6337 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6338 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6339 | |
6340 | static struct signatured_type * | |
6341 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6342 | { | |
518817b3 SM |
6343 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6344 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 6345 | struct dwp_file *dwp_file = get_dwp_file (dwarf2_per_objfile); |
a2ce51a0 DE |
6346 | struct dwo_unit *dwo_entry; |
6347 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6348 | void **slot; |
a2ce51a0 DE |
6349 | |
6350 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
6351 | gdb_assert (dwp_file != NULL); | |
6352 | ||
6aa5f3a6 DE |
6353 | /* If TU skeletons have been removed then we may not have read in any |
6354 | TUs yet. */ | |
6355 | if (dwarf2_per_objfile->signatured_types == NULL) | |
298e9637 | 6356 | dwarf2_per_objfile->signatured_types = allocate_signatured_type_table (); |
a2ce51a0 | 6357 | |
6aa5f3a6 | 6358 | find_sig_entry.signature = sig; |
b0b6a987 | 6359 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types.get (), |
6aa5f3a6 | 6360 | &find_sig_entry, INSERT); |
9a3c8263 | 6361 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6362 | |
6363 | /* Have we already tried to read this TU? | |
6364 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6365 | needn't exist in the global table yet). */ | |
6366 | if (sig_entry != NULL) | |
6367 | return sig_entry; | |
6368 | ||
a2ce51a0 DE |
6369 | if (dwp_file->tus == NULL) |
6370 | return NULL; | |
ed2dc618 | 6371 | dwo_entry = lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, NULL, |
57d63ce2 | 6372 | sig, 1 /* is_debug_types */); |
a2ce51a0 DE |
6373 | if (dwo_entry == NULL) |
6374 | return NULL; | |
6375 | ||
ed2dc618 SM |
6376 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6377 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6378 | |
a2ce51a0 DE |
6379 | return sig_entry; |
6380 | } | |
6381 | ||
380bca97 | 6382 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6383 | Returns NULL if signature SIG is not present in the table. |
6384 | It is up to the caller to complain about this. */ | |
348e048f DE |
6385 | |
6386 | static struct signatured_type * | |
a2ce51a0 | 6387 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6388 | { |
518817b3 SM |
6389 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6390 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 6391 | |
a2ce51a0 DE |
6392 | if (cu->dwo_unit |
6393 | && dwarf2_per_objfile->using_index) | |
6394 | { | |
6395 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6396 | These cases require special processing. */ | |
ed2dc618 | 6397 | if (get_dwp_file (dwarf2_per_objfile) == NULL) |
a2ce51a0 DE |
6398 | return lookup_dwo_signatured_type (cu, sig); |
6399 | else | |
6400 | return lookup_dwp_signatured_type (cu, sig); | |
6401 | } | |
6402 | else | |
6403 | { | |
6404 | struct signatured_type find_entry, *entry; | |
348e048f | 6405 | |
a2ce51a0 DE |
6406 | if (dwarf2_per_objfile->signatured_types == NULL) |
6407 | return NULL; | |
6408 | find_entry.signature = sig; | |
9a3c8263 | 6409 | entry = ((struct signatured_type *) |
b0b6a987 TT |
6410 | htab_find (dwarf2_per_objfile->signatured_types.get (), |
6411 | &find_entry)); | |
a2ce51a0 DE |
6412 | return entry; |
6413 | } | |
348e048f | 6414 | } |
18a8505e AT |
6415 | |
6416 | /* Return the address base of the compile unit, which, if exists, is stored | |
6417 | either at the attribute DW_AT_GNU_addr_base, or DW_AT_addr_base. */ | |
6418 | static gdb::optional<ULONGEST> | |
6419 | lookup_addr_base (struct die_info *comp_unit_die) | |
6420 | { | |
6421 | struct attribute *attr; | |
6422 | attr = dwarf2_attr_no_follow (comp_unit_die, DW_AT_addr_base); | |
6423 | if (attr == nullptr) | |
6424 | attr = dwarf2_attr_no_follow (comp_unit_die, DW_AT_GNU_addr_base); | |
6425 | if (attr == nullptr) | |
6426 | return gdb::optional<ULONGEST> (); | |
6427 | return DW_UNSND (attr); | |
6428 | } | |
6429 | ||
6430 | /* Return range lists base of the compile unit, which, if exists, is stored | |
6431 | either at the attribute DW_AT_rnglists_base or DW_AT_GNU_ranges_base. */ | |
6432 | static ULONGEST | |
6433 | lookup_ranges_base (struct die_info *comp_unit_die) | |
6434 | { | |
6435 | struct attribute *attr; | |
6436 | attr = dwarf2_attr_no_follow (comp_unit_die, DW_AT_rnglists_base); | |
6437 | if (attr == nullptr) | |
6438 | attr = dwarf2_attr_no_follow (comp_unit_die, DW_AT_GNU_ranges_base); | |
6439 | if (attr == nullptr) | |
6440 | return 0; | |
6441 | return DW_UNSND (attr); | |
6442 | } | |
6443 | ||
42e7ad6c | 6444 | /* Low level DIE reading support. */ |
348e048f | 6445 | |
d85a05f0 DJ |
6446 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6447 | ||
6448 | static void | |
6449 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6450 | struct dwarf2_cu *cu, |
3019eac3 | 6451 | struct dwarf2_section_info *section, |
685af9cd TT |
6452 | struct dwo_file *dwo_file, |
6453 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6454 | { |
fceca515 | 6455 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6456 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6457 | reader->cu = cu; |
3019eac3 | 6458 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6459 | reader->die_section = section; |
6460 | reader->buffer = section->buffer; | |
f664829e | 6461 | reader->buffer_end = section->buffer + section->size; |
685af9cd | 6462 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6463 | } |
6464 | ||
c0ab21c2 | 6465 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6466 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6467 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6468 | already. |
6469 | ||
6470 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6471 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6472 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6473 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6474 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6475 | STUB_COMP_DIR may be non-NULL. | |
3e225074 | 6476 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE |
b0c7bfa9 | 6477 | are filled in with the info of the DIE from the DWO file. |
685af9cd TT |
6478 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6479 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6480 | kept around for at least as long as *RESULT_READER. | |
6481 | ||
b0c7bfa9 DE |
6482 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6483 | ||
6484 | static int | |
6485 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
6486 | struct dwo_unit *dwo_unit, | |
b0c7bfa9 | 6487 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6488 | const char *stub_comp_dir, |
b0c7bfa9 | 6489 | struct die_reader_specs *result_reader, |
d521ce57 | 6490 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6491 | struct die_info **result_comp_unit_die, |
685af9cd | 6492 | abbrev_table_up *result_dwo_abbrev_table) |
b0c7bfa9 | 6493 | { |
ed2dc618 | 6494 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
b0c7bfa9 DE |
6495 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
6496 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 6497 | bfd *abfd; |
d521ce57 | 6498 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6499 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6500 | int i,num_extra_attrs; | |
6501 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6502 | struct die_info *comp_unit_die; |
6503 | ||
b0aeadb3 DE |
6504 | /* At most one of these may be provided. */ |
6505 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6506 | |
b0c7bfa9 DE |
6507 | /* These attributes aren't processed until later: |
6508 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6509 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6510 | referenced later. However, these attributes are found in the stub | |
6511 | which we won't have later. In order to not impose this complication | |
6512 | on the rest of the code, we read them here and copy them to the | |
6513 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6514 | |
6515 | stmt_list = NULL; | |
6516 | low_pc = NULL; | |
6517 | high_pc = NULL; | |
6518 | ranges = NULL; | |
6519 | comp_dir = NULL; | |
6520 | ||
6521 | if (stub_comp_unit_die != NULL) | |
6522 | { | |
6523 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6524 | DWO file. */ | |
6525 | if (! this_cu->is_debug_types) | |
6526 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
6527 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6528 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
6529 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
6530 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
6531 | ||
18a8505e | 6532 | cu->addr_base = lookup_addr_base (stub_comp_unit_die); |
b0c7bfa9 | 6533 | |
18a8505e AT |
6534 | /* There should be a DW_AT_rnglists_base (DW_AT_GNU_ranges_base) attribute |
6535 | here (if needed). We need the value before we can process | |
6536 | DW_AT_ranges. */ | |
6537 | cu->ranges_base = lookup_ranges_base (stub_comp_unit_die); | |
b0c7bfa9 | 6538 | } |
a2ce51a0 DE |
6539 | else if (stub_comp_dir != NULL) |
6540 | { | |
6541 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 6542 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
6543 | comp_dir->name = DW_AT_comp_dir; |
6544 | comp_dir->form = DW_FORM_string; | |
6545 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
6546 | DW_STRING (comp_dir) = stub_comp_dir; | |
6547 | } | |
b0c7bfa9 DE |
6548 | |
6549 | /* Set up for reading the DWO CU/TU. */ | |
6550 | cu->dwo_unit = dwo_unit; | |
685af9cd | 6551 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
6552 | section->read (objfile); |
6553 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
6554 | begin_info_ptr = info_ptr = (section->buffer |
6555 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 6556 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 DE |
6557 | |
6558 | if (this_cu->is_debug_types) | |
6559 | { | |
b0c7bfa9 DE |
6560 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
6561 | ||
ed2dc618 SM |
6562 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6563 | &cu->header, section, | |
b0c7bfa9 | 6564 | dwo_abbrev_section, |
43988095 | 6565 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 6566 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 6567 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
6568 | { |
6569 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 6570 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 6571 | hex_string (sig_type->signature), |
43988095 | 6572 | hex_string (cu->header.signature), |
9d8780f0 | 6573 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
6574 | bfd_get_filename (abfd)); |
6575 | } | |
9c541725 | 6576 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6577 | /* For DWOs coming from DWP files, we don't know the CU length |
6578 | nor the type's offset in the TU until now. */ | |
4057dfde | 6579 | dwo_unit->length = cu->header.get_length (); |
9c541725 | 6580 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
6581 | |
6582 | /* Establish the type offset that can be used to lookup the type. | |
6583 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
6584 | sig_type->type_offset_in_section |
6585 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
6586 | } |
6587 | else | |
6588 | { | |
ed2dc618 SM |
6589 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6590 | &cu->header, section, | |
b0c7bfa9 | 6591 | dwo_abbrev_section, |
43988095 | 6592 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 6593 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6594 | /* For DWOs coming from DWP files, we don't know the CU length |
6595 | until now. */ | |
4057dfde | 6596 | dwo_unit->length = cu->header.get_length (); |
b0c7bfa9 DE |
6597 | } |
6598 | ||
685af9cd | 6599 | *result_dwo_abbrev_table |
86de1d91 TT |
6600 | = abbrev_table::read (objfile, dwo_abbrev_section, |
6601 | cu->header.abbrev_sect_off); | |
685af9cd TT |
6602 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, |
6603 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
6604 | |
6605 | /* Read in the die, but leave space to copy over the attributes | |
6606 | from the stub. This has the benefit of simplifying the rest of | |
6607 | the code - all the work to maintain the illusion of a single | |
6608 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
6609 | num_extra_attrs = ((stmt_list != NULL) | |
6610 | + (low_pc != NULL) | |
6611 | + (high_pc != NULL) | |
6612 | + (ranges != NULL) | |
6613 | + (comp_dir != NULL)); | |
6614 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
3e225074 | 6615 | num_extra_attrs); |
b0c7bfa9 DE |
6616 | |
6617 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
6618 | comp_unit_die = *result_comp_unit_die; | |
6619 | i = comp_unit_die->num_attrs; | |
6620 | if (stmt_list != NULL) | |
6621 | comp_unit_die->attrs[i++] = *stmt_list; | |
6622 | if (low_pc != NULL) | |
6623 | comp_unit_die->attrs[i++] = *low_pc; | |
6624 | if (high_pc != NULL) | |
6625 | comp_unit_die->attrs[i++] = *high_pc; | |
6626 | if (ranges != NULL) | |
6627 | comp_unit_die->attrs[i++] = *ranges; | |
6628 | if (comp_dir != NULL) | |
6629 | comp_unit_die->attrs[i++] = *comp_dir; | |
6630 | comp_unit_die->num_attrs += num_extra_attrs; | |
6631 | ||
b4f54984 | 6632 | if (dwarf_die_debug) |
bf6af496 DE |
6633 | { |
6634 | fprintf_unfiltered (gdb_stdlog, | |
6635 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 6636 | section->get_name (), |
bf6af496 DE |
6637 | (unsigned) (begin_info_ptr - section->buffer), |
6638 | bfd_get_filename (abfd)); | |
b4f54984 | 6639 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
6640 | } |
6641 | ||
b0c7bfa9 DE |
6642 | /* Skip dummy compilation units. */ |
6643 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
6644 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
6645 | return 0; | |
6646 | ||
6647 | *result_info_ptr = info_ptr; | |
6648 | return 1; | |
6649 | } | |
6650 | ||
a084a2a6 AT |
6651 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
6652 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
6653 | signature is part of the header. */ | |
6654 | static gdb::optional<ULONGEST> | |
6655 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
6656 | { | |
6657 | if (cu->header.version >= 5) | |
6658 | return cu->header.signature; | |
6659 | struct attribute *attr; | |
6660 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
6661 | if (attr == nullptr) | |
6662 | return gdb::optional<ULONGEST> (); | |
6663 | return DW_UNSND (attr); | |
6664 | } | |
6665 | ||
c0ab21c2 | 6666 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6667 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 6668 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
6669 | |
6670 | static struct dwo_unit * | |
6671 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
c0ab21c2 TT |
6672 | struct die_info *comp_unit_die, |
6673 | const char *dwo_name) | |
b0c7bfa9 DE |
6674 | { |
6675 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 6676 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 6677 | const char *comp_dir; |
b0c7bfa9 | 6678 | |
a2ce51a0 DE |
6679 | gdb_assert (cu != NULL); |
6680 | ||
b0c7bfa9 | 6681 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 6682 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 6683 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 DE |
6684 | |
6685 | if (this_cu->is_debug_types) | |
6686 | { | |
6687 | struct signatured_type *sig_type; | |
6688 | ||
6689 | /* Since this_cu is the first member of struct signatured_type, | |
6690 | we can go from a pointer to one to a pointer to the other. */ | |
6691 | sig_type = (struct signatured_type *) this_cu; | |
b0c7bfa9 DE |
6692 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); |
6693 | } | |
6694 | else | |
6695 | { | |
a084a2a6 AT |
6696 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
6697 | if (!signature.has_value ()) | |
b0c7bfa9 DE |
6698 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
6699 | " [in module %s]"), | |
e3b94546 | 6700 | dwo_name, objfile_name (this_cu->dwarf2_per_objfile->objfile)); |
b0c7bfa9 | 6701 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, |
a084a2a6 | 6702 | *signature); |
b0c7bfa9 DE |
6703 | } |
6704 | ||
b0c7bfa9 DE |
6705 | return dwo_unit; |
6706 | } | |
6707 | ||
c0ab21c2 | 6708 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 6709 | See it for a description of the parameters. |
fcd3b13d | 6710 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 6711 | |
c0ab21c2 TT |
6712 | void |
6713 | cutu_reader::init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, | |
6751ebae | 6714 | int use_existing_cu) |
a2ce51a0 | 6715 | { |
a2ce51a0 | 6716 | struct signatured_type *sig_type; |
a2ce51a0 | 6717 | struct die_reader_specs reader; |
a2ce51a0 DE |
6718 | |
6719 | /* Verify we can do the following downcast, and that we have the | |
6720 | data we need. */ | |
6721 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
6722 | sig_type = (struct signatured_type *) this_cu; | |
6723 | gdb_assert (sig_type->dwo_unit != NULL); | |
6724 | ||
6aa5f3a6 DE |
6725 | if (use_existing_cu && this_cu->cu != NULL) |
6726 | { | |
6727 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 6728 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 6729 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
6730 | } |
6731 | else | |
6732 | { | |
6733 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
6734 | gdb_assert (this_cu->cu == NULL); | |
c0ab21c2 | 6735 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
6aa5f3a6 DE |
6736 | } |
6737 | ||
6738 | /* A future optimization, if needed, would be to use an existing | |
6739 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
6740 | could share abbrev tables. */ | |
a2ce51a0 DE |
6741 | |
6742 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, | |
a2ce51a0 DE |
6743 | NULL /* stub_comp_unit_die */, |
6744 | sig_type->dwo_unit->dwo_file->comp_dir, | |
6745 | &reader, &info_ptr, | |
3e225074 | 6746 | &comp_unit_die, |
c0ab21c2 | 6747 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
6748 | { |
6749 | /* Dummy die. */ | |
c0ab21c2 | 6750 | dummy_p = true; |
a2ce51a0 | 6751 | } |
a2ce51a0 DE |
6752 | } |
6753 | ||
fd820528 | 6754 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 6755 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 6756 | |
f4dc4d17 DE |
6757 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
6758 | Otherwise the table specified in the comp unit header is read in and used. | |
6759 | This is an optimization for when we already have the abbrev table. | |
6760 | ||
dee91e82 | 6761 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
6751ebae | 6762 | Otherwise, a new CU is allocated with xmalloc. */ |
aaa75496 | 6763 | |
c0ab21c2 TT |
6764 | cutu_reader::cutu_reader (struct dwarf2_per_cu_data *this_cu, |
6765 | struct abbrev_table *abbrev_table, | |
6751ebae | 6766 | int use_existing_cu, |
c0ab21c2 TT |
6767 | bool skip_partial) |
6768 | : die_reader_specs {}, | |
6751ebae | 6769 | m_this_cu (this_cu) |
c906108c | 6770 | { |
ed2dc618 | 6771 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 6772 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 6773 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 6774 | bfd *abfd = section->get_bfd_owner (); |
dee91e82 | 6775 | struct dwarf2_cu *cu; |
c0ab21c2 | 6776 | const gdb_byte *begin_info_ptr; |
dee91e82 | 6777 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 6778 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
6779 | /* Non-zero if CU currently points to a DWO file and we need to |
6780 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 6781 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 6782 | int rereading_dwo_cu = 0; |
c906108c | 6783 | |
b4f54984 | 6784 | if (dwarf_die_debug) |
9d8780f0 | 6785 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 6786 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 6787 | sect_offset_str (this_cu->sect_off)); |
09406207 | 6788 | |
a2ce51a0 DE |
6789 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
6790 | file (instead of going through the stub), short-circuit all of this. */ | |
6791 | if (this_cu->reading_dwo_directly) | |
6792 | { | |
6793 | /* Narrow down the scope of possibilities to have to understand. */ | |
6794 | gdb_assert (this_cu->is_debug_types); | |
6795 | gdb_assert (abbrev_table == NULL); | |
6751ebae | 6796 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu); |
a2ce51a0 DE |
6797 | return; |
6798 | } | |
6799 | ||
dee91e82 | 6800 | /* This is cheap if the section is already read in. */ |
96b79293 | 6801 | section->read (objfile); |
dee91e82 | 6802 | |
9c541725 | 6803 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
6804 | |
6805 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
6806 | |
6807 | if (use_existing_cu && this_cu->cu != NULL) | |
6808 | { | |
6809 | cu = this_cu->cu; | |
42e7ad6c DE |
6810 | /* If this CU is from a DWO file we need to start over, we need to |
6811 | refetch the attributes from the skeleton CU. | |
6812 | This could be optimized by retrieving those attributes from when we | |
6813 | were here the first time: the previous comp_unit_die was stored in | |
6814 | comp_unit_obstack. But there's no data yet that we need this | |
6815 | optimization. */ | |
6816 | if (cu->dwo_unit != NULL) | |
6817 | rereading_dwo_cu = 1; | |
dee91e82 DE |
6818 | } |
6819 | else | |
6820 | { | |
6821 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
6822 | gdb_assert (this_cu->cu == NULL); | |
c0ab21c2 TT |
6823 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
6824 | cu = m_new_cu.get (); | |
42e7ad6c | 6825 | } |
dee91e82 | 6826 | |
b0c7bfa9 | 6827 | /* Get the header. */ |
9c541725 | 6828 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
6829 | { |
6830 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 6831 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
6832 | } |
6833 | else | |
6834 | { | |
3019eac3 | 6835 | if (this_cu->is_debug_types) |
dee91e82 | 6836 | { |
ed2dc618 SM |
6837 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6838 | &cu->header, section, | |
4bdcc0c1 | 6839 | abbrev_section, info_ptr, |
43988095 | 6840 | rcuh_kind::TYPE); |
dee91e82 | 6841 | |
42e7ad6c DE |
6842 | /* Since per_cu is the first member of struct signatured_type, |
6843 | we can go from a pointer to one to a pointer to the other. */ | |
6844 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 6845 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
6846 | gdb_assert (sig_type->type_offset_in_tu |
6847 | == cu->header.type_cu_offset_in_tu); | |
6848 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 6849 | |
42e7ad6c DE |
6850 | /* LENGTH has not been set yet for type units if we're |
6851 | using .gdb_index. */ | |
4057dfde | 6852 | this_cu->length = cu->header.get_length (); |
3019eac3 DE |
6853 | |
6854 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
6855 | sig_type->type_offset_in_section = |
6856 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
6857 | |
6858 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
6859 | } |
6860 | else | |
6861 | { | |
ed2dc618 SM |
6862 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6863 | &cu->header, section, | |
4bdcc0c1 | 6864 | abbrev_section, |
43988095 JK |
6865 | info_ptr, |
6866 | rcuh_kind::COMPILE); | |
dee91e82 | 6867 | |
9c541725 | 6868 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
4057dfde | 6869 | gdb_assert (this_cu->length == cu->header.get_length ()); |
43988095 | 6870 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
6871 | } |
6872 | } | |
10b3939b | 6873 | |
6caca83c | 6874 | /* Skip dummy compilation units. */ |
dee91e82 | 6875 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 6876 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
6877 | { |
6878 | dummy_p = true; | |
6879 | return; | |
6880 | } | |
6caca83c | 6881 | |
433df2d4 DE |
6882 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
6883 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 6884 | done. */ |
f4dc4d17 | 6885 | if (abbrev_table != NULL) |
685af9cd TT |
6886 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
6887 | else | |
f4dc4d17 | 6888 | { |
c0ab21c2 | 6889 | m_abbrev_table_holder |
86de1d91 TT |
6890 | = abbrev_table::read (objfile, abbrev_section, |
6891 | cu->header.abbrev_sect_off); | |
c0ab21c2 | 6892 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 6893 | } |
af703f96 | 6894 | |
dee91e82 | 6895 | /* Read the top level CU/TU die. */ |
c0ab21c2 | 6896 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
3e225074 | 6897 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
93311388 | 6898 | |
58f0c718 | 6899 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
6900 | { |
6901 | dummy_p = true; | |
6902 | return; | |
6903 | } | |
58f0c718 | 6904 | |
b0c7bfa9 | 6905 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
6906 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
6907 | table from the DWO file and pass the ownership over to us. It will be | |
6908 | referenced from READER, so we must make sure to free it after we're done | |
6909 | with READER. | |
6910 | ||
b0c7bfa9 DE |
6911 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
6912 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 6913 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 6914 | if (dwo_name != nullptr) |
3019eac3 | 6915 | { |
3019eac3 | 6916 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 6917 | struct die_info *dwo_comp_unit_die; |
3019eac3 | 6918 | |
3e225074 | 6919 | if (comp_unit_die->has_children) |
6a506a2d | 6920 | { |
b98664d3 | 6921 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
6922 | " has children (offset %s) [in module %s]"), |
6923 | sect_offset_str (this_cu->sect_off), | |
6924 | bfd_get_filename (abfd)); | |
6a506a2d | 6925 | } |
c0ab21c2 | 6926 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die, dwo_name); |
6a506a2d | 6927 | if (dwo_unit != NULL) |
3019eac3 | 6928 | { |
6a506a2d | 6929 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
a2ce51a0 | 6930 | comp_unit_die, NULL, |
c0ab21c2 | 6931 | this, &info_ptr, |
3e225074 | 6932 | &dwo_comp_unit_die, |
c0ab21c2 | 6933 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
6934 | { |
6935 | /* Dummy die. */ | |
c0ab21c2 | 6936 | dummy_p = true; |
6a506a2d DE |
6937 | return; |
6938 | } | |
6939 | comp_unit_die = dwo_comp_unit_die; | |
6940 | } | |
6941 | else | |
6942 | { | |
6943 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
6944 | the stub. A complaint has already been logged. There's | |
6945 | not much more we can do except pass on the stub DIE to | |
6946 | die_reader_func. We don't want to throw an error on bad | |
6947 | debug info. */ | |
3019eac3 DE |
6948 | } |
6949 | } | |
c0ab21c2 | 6950 | } |
3019eac3 | 6951 | |
6751ebae TT |
6952 | void |
6953 | cutu_reader::keep () | |
c0ab21c2 | 6954 | { |
b0c7bfa9 | 6955 | /* Done, clean up. */ |
6751ebae TT |
6956 | gdb_assert (!dummy_p); |
6957 | if (m_new_cu != NULL) | |
348e048f | 6958 | { |
c0ab21c2 TT |
6959 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6960 | = m_this_cu->dwarf2_per_objfile; | |
fcd3b13d | 6961 | /* Link this CU into read_in_chain. */ |
c0ab21c2 TT |
6962 | m_this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; |
6963 | dwarf2_per_objfile->read_in_chain = m_this_cu; | |
fcd3b13d | 6964 | /* The chain owns it now. */ |
c0ab21c2 | 6965 | m_new_cu.release (); |
348e048f | 6966 | } |
dee91e82 DE |
6967 | } |
6968 | ||
18a8505e AT |
6969 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
6970 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
6971 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
6972 | |
6973 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 6974 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
6975 | |
6976 | We fill in THIS_CU->length. | |
6977 | ||
dee91e82 | 6978 | THIS_CU->cu is always freed when done. |
3019eac3 | 6979 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
6980 | to care whether it refers to the "main" CU or the DWO CU. |
6981 | ||
6982 | When parent_cu is passed, it is used to provide a default value for | |
6983 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 6984 | |
c0ab21c2 TT |
6985 | cutu_reader::cutu_reader (struct dwarf2_per_cu_data *this_cu, |
6986 | struct dwarf2_cu *parent_cu, | |
6987 | struct dwo_file *dwo_file) | |
6988 | : die_reader_specs {}, | |
6989 | m_this_cu (this_cu) | |
dee91e82 | 6990 | { |
ed2dc618 | 6991 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 6992 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 6993 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 6994 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 6995 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 6996 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 6997 | |
b4f54984 | 6998 | if (dwarf_die_debug) |
9d8780f0 | 6999 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7000 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7001 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7002 | |
dee91e82 DE |
7003 | gdb_assert (this_cu->cu == NULL); |
7004 | ||
33e80786 DE |
7005 | abbrev_section = (dwo_file != NULL |
7006 | ? &dwo_file->sections.abbrev | |
7007 | : get_abbrev_section_for_cu (this_cu)); | |
7008 | ||
dee91e82 | 7009 | /* This is cheap if the section is already read in. */ |
96b79293 | 7010 | section->read (objfile); |
dee91e82 | 7011 | |
c0ab21c2 | 7012 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
dee91e82 | 7013 | |
9c541725 | 7014 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
ed2dc618 | 7015 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
c0ab21c2 | 7016 | &m_new_cu->header, section, |
4bdcc0c1 | 7017 | abbrev_section, info_ptr, |
43988095 JK |
7018 | (this_cu->is_debug_types |
7019 | ? rcuh_kind::TYPE | |
7020 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7021 | |
18a8505e AT |
7022 | if (parent_cu != nullptr) |
7023 | { | |
c0ab21c2 TT |
7024 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
7025 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 7026 | } |
4057dfde | 7027 | this_cu->length = m_new_cu->header.get_length (); |
dee91e82 DE |
7028 | |
7029 | /* Skip dummy compilation units. */ | |
7030 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7031 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
7032 | { |
7033 | dummy_p = true; | |
7034 | return; | |
7035 | } | |
72bf9492 | 7036 | |
c0ab21c2 | 7037 | m_abbrev_table_holder |
86de1d91 TT |
7038 | = abbrev_table::read (objfile, abbrev_section, |
7039 | m_new_cu->header.abbrev_sect_off); | |
dee91e82 | 7040 | |
c0ab21c2 TT |
7041 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
7042 | m_abbrev_table_holder.get ()); | |
3e225074 | 7043 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
dee91e82 DE |
7044 | } |
7045 | ||
0018ea6f DE |
7046 | \f |
7047 | /* Type Unit Groups. | |
dee91e82 | 7048 | |
0018ea6f DE |
7049 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7050 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7051 | so that all types coming from the same compilation (.o file) are grouped | |
7052 | together. A future step could be to put the types in the same symtab as | |
7053 | the CU the types ultimately came from. */ | |
ff013f42 | 7054 | |
f4dc4d17 DE |
7055 | static hashval_t |
7056 | hash_type_unit_group (const void *item) | |
7057 | { | |
9a3c8263 SM |
7058 | const struct type_unit_group *tu_group |
7059 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7060 | |
094b34ac | 7061 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7062 | } |
348e048f DE |
7063 | |
7064 | static int | |
f4dc4d17 | 7065 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7066 | { |
9a3c8263 SM |
7067 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7068 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7069 | |
094b34ac | 7070 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7071 | } |
348e048f | 7072 | |
f4dc4d17 DE |
7073 | /* Allocate a hash table for type unit groups. */ |
7074 | ||
eaa5fa8b | 7075 | static htab_up |
298e9637 | 7076 | allocate_type_unit_groups_table () |
f4dc4d17 | 7077 | { |
eaa5fa8b TT |
7078 | return htab_up (htab_create_alloc (3, |
7079 | hash_type_unit_group, | |
7080 | eq_type_unit_group, | |
7081 | NULL, xcalloc, xfree)); | |
f4dc4d17 | 7082 | } |
dee91e82 | 7083 | |
f4dc4d17 DE |
7084 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7085 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7086 | of any one psymtab grow too big. */ | |
7087 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7088 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7089 | |
094b34ac | 7090 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7091 | Create the type_unit_group object used to hold one or more TUs. */ |
7092 | ||
7093 | static struct type_unit_group * | |
094b34ac | 7094 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7095 | { |
518817b3 SM |
7096 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7097 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 | 7098 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 7099 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7100 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
7101 | |
7102 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7103 | struct type_unit_group); | |
094b34ac | 7104 | per_cu = &tu_group->per_cu; |
518817b3 | 7105 | per_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
f4dc4d17 | 7106 | |
094b34ac DE |
7107 | if (dwarf2_per_objfile->using_index) |
7108 | { | |
7109 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7110 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
7111 | } |
7112 | else | |
7113 | { | |
9c541725 | 7114 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7115 | dwarf2_psymtab *pst; |
528e1572 | 7116 | std::string name; |
094b34ac DE |
7117 | |
7118 | /* Give the symtab a useful name for debug purposes. */ | |
7119 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7120 | name = string_printf ("<type_units_%d>", |
7121 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7122 | else |
528e1572 | 7123 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7124 | |
528e1572 | 7125 | pst = create_partial_symtab (per_cu, name.c_str ()); |
6d94535f | 7126 | pst->anonymous = true; |
094b34ac | 7127 | } |
f4dc4d17 | 7128 | |
094b34ac | 7129 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7130 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7131 | |
7132 | return tu_group; | |
7133 | } | |
7134 | ||
094b34ac DE |
7135 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7136 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7137 | |
7138 | static struct type_unit_group * | |
ff39bb5e | 7139 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7140 | { |
518817b3 SM |
7141 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7142 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 DE |
7143 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
7144 | struct type_unit_group *tu_group; | |
7145 | void **slot; | |
7146 | unsigned int line_offset; | |
7147 | struct type_unit_group type_unit_group_for_lookup; | |
7148 | ||
7149 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
298e9637 | 7150 | dwarf2_per_objfile->type_unit_groups = allocate_type_unit_groups_table (); |
f4dc4d17 DE |
7151 | |
7152 | /* Do we need to create a new group, or can we use an existing one? */ | |
7153 | ||
7154 | if (stmt_list) | |
7155 | { | |
7156 | line_offset = DW_UNSND (stmt_list); | |
7157 | ++tu_stats->nr_symtab_sharers; | |
7158 | } | |
7159 | else | |
7160 | { | |
7161 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7162 | We can do various things here like create one group per TU or | |
7163 | spread them over multiple groups to split up the expansion work. | |
7164 | To avoid worst case scenarios (too many groups or too large groups) | |
7165 | we, umm, group them in bunches. */ | |
7166 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7167 | | (tu_stats->nr_stmt_less_type_units | |
7168 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7169 | ++tu_stats->nr_stmt_less_type_units; | |
7170 | } | |
7171 | ||
094b34ac | 7172 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7173 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
eaa5fa8b | 7174 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups.get (), |
f4dc4d17 DE |
7175 | &type_unit_group_for_lookup, INSERT); |
7176 | if (*slot != NULL) | |
7177 | { | |
9a3c8263 | 7178 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7179 | gdb_assert (tu_group != NULL); |
7180 | } | |
7181 | else | |
7182 | { | |
9c541725 | 7183 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7184 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7185 | *slot = tu_group; |
7186 | ++tu_stats->nr_symtabs; | |
7187 | } | |
7188 | ||
7189 | return tu_group; | |
7190 | } | |
0018ea6f DE |
7191 | \f |
7192 | /* Partial symbol tables. */ | |
7193 | ||
7194 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7195 | ||
7196 | The caller must fill in the following details: | |
7197 | dirname, textlow, texthigh. */ | |
7198 | ||
891813be | 7199 | static dwarf2_psymtab * |
0018ea6f DE |
7200 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) |
7201 | { | |
e3b94546 | 7202 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
891813be | 7203 | dwarf2_psymtab *pst; |
0018ea6f | 7204 | |
891813be | 7205 | pst = new dwarf2_psymtab (name, objfile, 0); |
0018ea6f | 7206 | |
6d94535f | 7207 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7208 | |
7209 | /* This is the glue that links PST into GDB's symbol API. */ | |
891813be | 7210 | pst->per_cu_data = per_cu; |
0018ea6f DE |
7211 | per_cu->v.psymtab = pst; |
7212 | ||
7213 | return pst; | |
7214 | } | |
7215 | ||
c0ab21c2 | 7216 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7217 | |
7218 | static void | |
7219 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7220 | const gdb_byte *info_ptr, |
0018ea6f | 7221 | struct die_info *comp_unit_die, |
c0ab21c2 | 7222 | enum language pretend_language) |
0018ea6f DE |
7223 | { |
7224 | struct dwarf2_cu *cu = reader->cu; | |
518817b3 | 7225 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 7226 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f | 7227 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7228 | CORE_ADDR baseaddr; |
7229 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7230 | dwarf2_psymtab *pst; |
3a2b436a | 7231 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7232 | const char *filename; |
0018ea6f | 7233 | |
0018ea6f DE |
7234 | gdb_assert (! per_cu->is_debug_types); |
7235 | ||
c0ab21c2 | 7236 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7237 | |
0018ea6f | 7238 | /* Allocate a new partial symbol table structure. */ |
2e927613 TV |
7239 | gdb::unique_xmalloc_ptr<char> debug_filename; |
7240 | static const char artificial[] = "<artificial>"; | |
7d45c7c3 KB |
7241 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7242 | if (filename == NULL) | |
0018ea6f | 7243 | filename = ""; |
2e927613 TV |
7244 | else if (strcmp (filename, artificial) == 0) |
7245 | { | |
7246 | debug_filename.reset (concat (artificial, "@", | |
85f0dd3c TV |
7247 | sect_offset_str (per_cu->sect_off), |
7248 | (char *) NULL)); | |
2e927613 TV |
7249 | filename = debug_filename.get (); |
7250 | } | |
0018ea6f DE |
7251 | |
7252 | pst = create_partial_symtab (per_cu, filename); | |
7253 | ||
7254 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7255 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7256 | |
b3b3bada | 7257 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7258 | |
7259 | dwarf2_find_base_address (comp_unit_die, cu); | |
7260 | ||
7261 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7262 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7263 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7264 | &best_highpc, cu, pst); | |
7265 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7266 | { |
7267 | CORE_ADDR low | |
7268 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7269 | - baseaddr); | |
7270 | CORE_ADDR high | |
7271 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7272 | - baseaddr - 1); | |
7273 | /* Store the contiguous range if it is not empty; it can be | |
7274 | empty for CUs with no code. */ | |
d320c2b5 TT |
7275 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
7276 | low, high, pst); | |
79748972 | 7277 | } |
0018ea6f DE |
7278 | |
7279 | /* Check if comp unit has_children. | |
7280 | If so, read the rest of the partial symbols from this comp unit. | |
7281 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7282 | if (comp_unit_die->has_children) |
0018ea6f DE |
7283 | { |
7284 | struct partial_die_info *first_die; | |
7285 | CORE_ADDR lowpc, highpc; | |
7286 | ||
7287 | lowpc = ((CORE_ADDR) -1); | |
7288 | highpc = ((CORE_ADDR) 0); | |
7289 | ||
7290 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7291 | ||
7292 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7293 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7294 | |
7295 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7296 | complaints from `maint check'. */ | |
7297 | if (lowpc == ((CORE_ADDR) -1)) | |
7298 | lowpc = highpc; | |
7299 | ||
7300 | /* If the compilation unit didn't have an explicit address range, | |
7301 | then use the information extracted from its child dies. */ | |
e385593e | 7302 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7303 | { |
7304 | best_lowpc = lowpc; | |
7305 | best_highpc = highpc; | |
7306 | } | |
7307 | } | |
4ae976d1 | 7308 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7309 | best_lowpc + baseaddr) |
7310 | - baseaddr); | |
4ae976d1 | 7311 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7312 | best_highpc + baseaddr) |
7313 | - baseaddr); | |
0018ea6f | 7314 | |
8763cede | 7315 | end_psymtab_common (objfile, pst); |
0018ea6f | 7316 | |
ae640021 | 7317 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7318 | { |
7319 | int i; | |
ae640021 | 7320 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7321 | |
7322 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7323 | post-pass. */ | |
7324 | pst->number_of_dependencies = len; | |
a9342b62 TT |
7325 | pst->dependencies |
7326 | = objfile->partial_symtabs->allocate_dependencies (len); | |
ae640021 AB |
7327 | for (i = 0; i < len; ++i) |
7328 | { | |
7329 | pst->dependencies[i] | |
7330 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7331 | } | |
0018ea6f | 7332 | |
ae640021 | 7333 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7334 | } |
7335 | ||
7336 | /* Get the list of files included in the current compilation unit, | |
7337 | and build a psymtab for each of them. */ | |
7338 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7339 | ||
b4f54984 | 7340 | if (dwarf_read_debug) |
b926417a TT |
7341 | fprintf_unfiltered (gdb_stdlog, |
7342 | "Psymtab for %s unit @%s: %s - %s" | |
7343 | ", %d global, %d static syms\n", | |
7344 | per_cu->is_debug_types ? "type" : "comp", | |
7345 | sect_offset_str (per_cu->sect_off), | |
7346 | paddress (gdbarch, pst->text_low (objfile)), | |
7347 | paddress (gdbarch, pst->text_high (objfile)), | |
7348 | pst->n_global_syms, pst->n_static_syms); | |
0018ea6f DE |
7349 | } |
7350 | ||
7351 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7352 | Process compilation unit THIS_CU for a psymtab. */ | |
7353 | ||
7354 | static void | |
7355 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
135f5437 | 7356 | bool want_partial_unit, |
b93601f3 | 7357 | enum language pretend_language) |
0018ea6f DE |
7358 | { |
7359 | /* If this compilation unit was already read in, free the | |
7360 | cached copy in order to read it in again. This is | |
7361 | necessary because we skipped some symbols when we first | |
7362 | read in the compilation unit (see load_partial_dies). | |
7363 | This problem could be avoided, but the benefit is unclear. */ | |
7364 | if (this_cu->cu != NULL) | |
7365 | free_one_cached_comp_unit (this_cu); | |
7366 | ||
6751ebae | 7367 | cutu_reader reader (this_cu, NULL, 0, false); |
c0ab21c2 TT |
7368 | |
7369 | if (reader.dummy_p) | |
f1902523 | 7370 | { |
c0ab21c2 | 7371 | /* Nothing. */ |
f1902523 | 7372 | } |
c0ab21c2 | 7373 | else if (this_cu->is_debug_types) |
3e225074 TT |
7374 | build_type_psymtabs_reader (&reader, reader.info_ptr, |
7375 | reader.comp_unit_die); | |
135f5437 TT |
7376 | else if (want_partial_unit |
7377 | || reader.comp_unit_die->tag != DW_TAG_partial_unit) | |
c0ab21c2 TT |
7378 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, |
7379 | reader.comp_unit_die, | |
c0ab21c2 | 7380 | pretend_language); |
0018ea6f DE |
7381 | |
7382 | /* Age out any secondary CUs. */ | |
ed2dc618 | 7383 | age_cached_comp_units (this_cu->dwarf2_per_objfile); |
0018ea6f | 7384 | } |
f4dc4d17 DE |
7385 | |
7386 | /* Reader function for build_type_psymtabs. */ | |
7387 | ||
7388 | static void | |
7389 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7390 | const gdb_byte *info_ptr, |
3e225074 | 7391 | struct die_info *type_unit_die) |
f4dc4d17 | 7392 | { |
ed2dc618 | 7393 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 7394 | = reader->cu->per_cu->dwarf2_per_objfile; |
f4dc4d17 DE |
7395 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7396 | struct dwarf2_cu *cu = reader->cu; | |
7397 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7398 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7399 | struct type_unit_group *tu_group; |
7400 | struct attribute *attr; | |
7401 | struct partial_die_info *first_die; | |
7402 | CORE_ADDR lowpc, highpc; | |
891813be | 7403 | dwarf2_psymtab *pst; |
f4dc4d17 | 7404 | |
0186c6a7 DE |
7405 | gdb_assert (per_cu->is_debug_types); |
7406 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 7407 | |
3e225074 | 7408 | if (! type_unit_die->has_children) |
f4dc4d17 DE |
7409 | return; |
7410 | ||
7411 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 7412 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7413 | |
df07e2c7 | 7414 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7415 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7416 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7417 | |
7418 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
f4dc4d17 | 7419 | pst = create_partial_symtab (per_cu, ""); |
6d94535f | 7420 | pst->anonymous = true; |
f4dc4d17 DE |
7421 | |
7422 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7423 | ||
7424 | lowpc = (CORE_ADDR) -1; | |
7425 | highpc = (CORE_ADDR) 0; | |
7426 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7427 | ||
8763cede | 7428 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
7429 | } |
7430 | ||
73051182 DE |
7431 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7432 | ||
7433 | struct tu_abbrev_offset | |
7434 | { | |
b2bdb8cf SM |
7435 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7436 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7437 | {} | |
7438 | ||
7439 | signatured_type *sig_type; | |
73051182 DE |
7440 | sect_offset abbrev_offset; |
7441 | }; | |
7442 | ||
484cf504 | 7443 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 7444 | |
484cf504 TT |
7445 | static bool |
7446 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7447 | const struct tu_abbrev_offset &b) | |
73051182 | 7448 | { |
484cf504 | 7449 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7450 | } |
7451 | ||
7452 | /* Efficiently read all the type units. | |
7453 | This does the bulk of the work for build_type_psymtabs. | |
7454 | ||
7455 | The efficiency is because we sort TUs by the abbrev table they use and | |
7456 | only read each abbrev table once. In one program there are 200K TUs | |
7457 | sharing 8K abbrev tables. | |
7458 | ||
7459 | The main purpose of this function is to support building the | |
7460 | dwarf2_per_objfile->type_unit_groups table. | |
7461 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
7462 | can collapse the search space by grouping them by stmt_list. | |
7463 | The savings can be significant, in the same program from above the 200K TUs | |
7464 | share 8K stmt_list tables. | |
7465 | ||
7466 | FUNC is expected to call get_type_unit_group, which will create the | |
7467 | struct type_unit_group if necessary and add it to | |
7468 | dwarf2_per_objfile->type_unit_groups. */ | |
7469 | ||
7470 | static void | |
ed2dc618 | 7471 | build_type_psymtabs_1 (struct dwarf2_per_objfile *dwarf2_per_objfile) |
73051182 | 7472 | { |
73051182 | 7473 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
685af9cd | 7474 | abbrev_table_up abbrev_table; |
73051182 | 7475 | sect_offset abbrev_offset; |
73051182 DE |
7476 | |
7477 | /* It's up to the caller to not call us multiple times. */ | |
7478 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
7479 | ||
b2bdb8cf | 7480 | if (dwarf2_per_objfile->all_type_units.empty ()) |
73051182 DE |
7481 | return; |
7482 | ||
7483 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7484 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7485 | read each abbrev table in. | |
7486 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7487 | This is simpler and efficient enough for now. | |
7488 | ||
7489 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7490 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7491 | stmt_list value too so in practice this should work well. | |
7492 | ||
7493 | The basic algorithm here is: | |
7494 | ||
7495 | sort TUs by abbrev table | |
7496 | for each TU with same abbrev table: | |
7497 | read abbrev table if first user | |
7498 | read TU top level DIE | |
7499 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7500 | call FUNC */ | |
7501 | ||
b4f54984 | 7502 | if (dwarf_read_debug) |
73051182 DE |
7503 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
7504 | ||
7505 | /* Sort in a separate table to maintain the order of all_type_units | |
7506 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf SM |
7507 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
7508 | sorted_by_abbrev.reserve (dwarf2_per_objfile->all_type_units.size ()); | |
7509 | ||
7510 | for (signatured_type *sig_type : dwarf2_per_objfile->all_type_units) | |
7511 | sorted_by_abbrev.emplace_back | |
7512 | (sig_type, read_abbrev_offset (dwarf2_per_objfile, | |
7513 | sig_type->per_cu.section, | |
7514 | sig_type->per_cu.sect_off)); | |
73051182 | 7515 | |
484cf504 TT |
7516 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7517 | sort_tu_by_abbrev_offset); | |
73051182 | 7518 | |
9c541725 | 7519 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 7520 | |
b2bdb8cf | 7521 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 7522 | { |
73051182 DE |
7523 | /* Switch to the next abbrev table if necessary. */ |
7524 | if (abbrev_table == NULL | |
b2bdb8cf | 7525 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 7526 | { |
b2bdb8cf | 7527 | abbrev_offset = tu.abbrev_offset; |
73051182 | 7528 | abbrev_table = |
86de1d91 TT |
7529 | abbrev_table::read (dwarf2_per_objfile->objfile, |
7530 | &dwarf2_per_objfile->abbrev, | |
7531 | abbrev_offset); | |
73051182 DE |
7532 | ++tu_stats->nr_uniq_abbrev_tables; |
7533 | } | |
7534 | ||
c0ab21c2 | 7535 | cutu_reader reader (&tu.sig_type->per_cu, abbrev_table.get (), |
6751ebae | 7536 | 0, false); |
c0ab21c2 TT |
7537 | if (!reader.dummy_p) |
7538 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7539 | reader.comp_unit_die); |
73051182 | 7540 | } |
6aa5f3a6 | 7541 | } |
73051182 | 7542 | |
6aa5f3a6 DE |
7543 | /* Print collected type unit statistics. */ |
7544 | ||
7545 | static void | |
ed2dc618 | 7546 | print_tu_stats (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
7547 | { |
7548 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
7549 | ||
7550 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf SM |
7551 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
7552 | dwarf2_per_objfile->all_type_units.size ()); | |
6aa5f3a6 DE |
7553 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
7554 | tu_stats->nr_uniq_abbrev_tables); | |
7555 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
7556 | tu_stats->nr_symtabs); | |
7557 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
7558 | tu_stats->nr_symtab_sharers); | |
7559 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
7560 | tu_stats->nr_stmt_less_type_units); | |
7561 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
7562 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
7563 | } |
7564 | ||
f4dc4d17 DE |
7565 | /* Traversal function for build_type_psymtabs. */ |
7566 | ||
7567 | static int | |
7568 | build_type_psymtab_dependencies (void **slot, void *info) | |
7569 | { | |
ed2dc618 SM |
7570 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7571 | = (struct dwarf2_per_objfile *) info; | |
f4dc4d17 DE |
7572 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7573 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 7574 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 7575 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 7576 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
7577 | int i; |
7578 | ||
7579 | gdb_assert (len > 0); | |
197400e8 | 7580 | gdb_assert (per_cu->type_unit_group_p ()); |
f4dc4d17 DE |
7581 | |
7582 | pst->number_of_dependencies = len; | |
a9342b62 | 7583 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 7584 | for (i = 0; i < len; ++i) |
f4dc4d17 | 7585 | { |
df07e2c7 | 7586 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
7587 | gdb_assert (iter->per_cu.is_debug_types); |
7588 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 7589 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
7590 | } |
7591 | ||
df07e2c7 AB |
7592 | delete tu_group->tus; |
7593 | tu_group->tus = nullptr; | |
348e048f DE |
7594 | |
7595 | return 1; | |
7596 | } | |
7597 | ||
7598 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7599 | Build partial symbol tables for the .debug_types comp-units. */ | |
7600 | ||
7601 | static void | |
ed2dc618 | 7602 | build_type_psymtabs (struct dwarf2_per_objfile *dwarf2_per_objfile) |
348e048f | 7603 | { |
ed2dc618 | 7604 | if (! create_all_type_units (dwarf2_per_objfile)) |
348e048f DE |
7605 | return; |
7606 | ||
ed2dc618 | 7607 | build_type_psymtabs_1 (dwarf2_per_objfile); |
6aa5f3a6 | 7608 | } |
f4dc4d17 | 7609 | |
6aa5f3a6 DE |
7610 | /* Traversal function for process_skeletonless_type_unit. |
7611 | Read a TU in a DWO file and build partial symbols for it. */ | |
7612 | ||
7613 | static int | |
7614 | process_skeletonless_type_unit (void **slot, void *info) | |
7615 | { | |
7616 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
ed2dc618 SM |
7617 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7618 | = (struct dwarf2_per_objfile *) info; | |
6aa5f3a6 DE |
7619 | struct signatured_type find_entry, *entry; |
7620 | ||
7621 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
7622 | ||
7623 | if (dwarf2_per_objfile->signatured_types == NULL) | |
298e9637 | 7624 | dwarf2_per_objfile->signatured_types = allocate_signatured_type_table (); |
6aa5f3a6 DE |
7625 | |
7626 | find_entry.signature = dwo_unit->signature; | |
b0b6a987 TT |
7627 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types.get (), |
7628 | &find_entry, INSERT); | |
6aa5f3a6 DE |
7629 | /* If we've already seen this type there's nothing to do. What's happening |
7630 | is we're doing our own version of comdat-folding here. */ | |
7631 | if (*slot != NULL) | |
7632 | return 1; | |
7633 | ||
7634 | /* This does the job that create_all_type_units would have done for | |
7635 | this TU. */ | |
ed2dc618 SM |
7636 | entry = add_type_unit (dwarf2_per_objfile, dwo_unit->signature, slot); |
7637 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
7638 | *slot = entry; |
7639 | ||
7640 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
6751ebae | 7641 | cutu_reader reader (&entry->per_cu, NULL, 0, false); |
c0ab21c2 TT |
7642 | if (!reader.dummy_p) |
7643 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7644 | reader.comp_unit_die); |
6aa5f3a6 DE |
7645 | |
7646 | return 1; | |
7647 | } | |
7648 | ||
7649 | /* Traversal function for process_skeletonless_type_units. */ | |
7650 | ||
7651 | static int | |
7652 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
7653 | { | |
7654 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
7655 | ||
7656 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
7657 | htab_traverse_noresize (dwo_file->tus.get (), |
7658 | process_skeletonless_type_unit, info); | |
6aa5f3a6 DE |
7659 | |
7660 | return 1; | |
7661 | } | |
7662 | ||
7663 | /* Scan all TUs of DWO files, verifying we've processed them. | |
7664 | This is needed in case a TU was emitted without its skeleton. | |
7665 | Note: This can't be done until we know what all the DWO files are. */ | |
7666 | ||
7667 | static void | |
ed2dc618 | 7668 | process_skeletonless_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
7669 | { |
7670 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
ed2dc618 | 7671 | if (get_dwp_file (dwarf2_per_objfile) == NULL |
6aa5f3a6 DE |
7672 | && dwarf2_per_objfile->dwo_files != NULL) |
7673 | { | |
51ac9db5 | 7674 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files.get (), |
6aa5f3a6 | 7675 | process_dwo_file_for_skeletonless_type_units, |
ed2dc618 | 7676 | dwarf2_per_objfile); |
6aa5f3a6 | 7677 | } |
348e048f DE |
7678 | } |
7679 | ||
ed2dc618 | 7680 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
7681 | |
7682 | static void | |
ed2dc618 | 7683 | set_partial_user (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 7684 | { |
b76e467d | 7685 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
95554aad | 7686 | { |
891813be | 7687 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 7688 | |
36586728 TT |
7689 | if (pst == NULL) |
7690 | continue; | |
7691 | ||
b76e467d | 7692 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
7693 | { |
7694 | /* Set the 'user' field only if it is not already set. */ | |
7695 | if (pst->dependencies[j]->user == NULL) | |
7696 | pst->dependencies[j]->user = pst; | |
7697 | } | |
7698 | } | |
7699 | } | |
7700 | ||
93311388 DE |
7701 | /* Build the partial symbol table by doing a quick pass through the |
7702 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 7703 | |
93311388 | 7704 | static void |
ed2dc618 | 7705 | dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile *dwarf2_per_objfile) |
93311388 | 7706 | { |
ed2dc618 | 7707 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
93311388 | 7708 | |
b4f54984 | 7709 | if (dwarf_read_debug) |
45cfd468 DE |
7710 | { |
7711 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 7712 | objfile_name (objfile)); |
45cfd468 DE |
7713 | } |
7714 | ||
76935768 TT |
7715 | scoped_restore restore_reading_psyms |
7716 | = make_scoped_restore (&dwarf2_per_objfile->reading_partial_symbols, | |
7717 | true); | |
98bfdba5 | 7718 | |
96b79293 | 7719 | dwarf2_per_objfile->info.read (objfile); |
91c24f0a | 7720 | |
93311388 DE |
7721 | /* Any cached compilation units will be linked by the per-objfile |
7722 | read_in_chain. Make sure to free them when we're done. */ | |
11ed8cad | 7723 | free_cached_comp_units freer (dwarf2_per_objfile); |
72bf9492 | 7724 | |
ed2dc618 | 7725 | build_type_psymtabs (dwarf2_per_objfile); |
348e048f | 7726 | |
ed2dc618 | 7727 | create_all_comp_units (dwarf2_per_objfile); |
c906108c | 7728 | |
60606b2c TT |
7729 | /* Create a temporary address map on a temporary obstack. We later |
7730 | copy this to the final obstack. */ | |
8268c778 | 7731 | auto_obstack temp_obstack; |
791afaa2 TT |
7732 | |
7733 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 7734 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 7735 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 7736 | |
b76e467d | 7737 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
135f5437 | 7738 | process_psymtab_comp_unit (per_cu, false, language_minimal); |
ff013f42 | 7739 | |
6aa5f3a6 | 7740 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
ed2dc618 | 7741 | process_skeletonless_type_units (dwarf2_per_objfile); |
6aa5f3a6 DE |
7742 | |
7743 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
7744 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
7745 | { | |
eaa5fa8b | 7746 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups.get (), |
ed2dc618 | 7747 | build_type_psymtab_dependencies, dwarf2_per_objfile); |
6aa5f3a6 DE |
7748 | } |
7749 | ||
b4f54984 | 7750 | if (dwarf_read_debug) |
ed2dc618 | 7751 | print_tu_stats (dwarf2_per_objfile); |
6aa5f3a6 | 7752 | |
ed2dc618 | 7753 | set_partial_user (dwarf2_per_objfile); |
95554aad | 7754 | |
d320c2b5 TT |
7755 | objfile->partial_symtabs->psymtabs_addrmap |
7756 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 7757 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
7758 | /* At this point we want to keep the address map. */ |
7759 | save_psymtabs_addrmap.release (); | |
ff013f42 | 7760 | |
b4f54984 | 7761 | if (dwarf_read_debug) |
45cfd468 | 7762 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 7763 | objfile_name (objfile)); |
ae038cb0 DJ |
7764 | } |
7765 | ||
dee91e82 DE |
7766 | /* Load the partial DIEs for a secondary CU into memory. |
7767 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 7768 | |
dee91e82 DE |
7769 | static void |
7770 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
7771 | { | |
6751ebae | 7772 | cutu_reader reader (this_cu, NULL, 1, false); |
c0ab21c2 TT |
7773 | |
7774 | if (!reader.dummy_p) | |
7775 | { | |
7776 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
7777 | language_minimal); | |
7778 | ||
7779 | /* Check if comp unit has_children. | |
7780 | If so, read the rest of the partial symbols from this comp unit. | |
7781 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7782 | if (reader.comp_unit_die->has_children) |
c0ab21c2 | 7783 | load_partial_dies (&reader, reader.info_ptr, 0); |
6751ebae TT |
7784 | |
7785 | reader.keep (); | |
c0ab21c2 | 7786 | } |
ae038cb0 DJ |
7787 | } |
7788 | ||
ae038cb0 | 7789 | static void |
ed2dc618 | 7790 | read_comp_units_from_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
36586728 | 7791 | struct dwarf2_section_info *section, |
f1902523 | 7792 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 7793 | unsigned int is_dwz) |
ae038cb0 | 7794 | { |
d521ce57 | 7795 | const gdb_byte *info_ptr; |
ed2dc618 | 7796 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
be391dca | 7797 | |
b4f54984 | 7798 | if (dwarf_read_debug) |
bf6af496 | 7799 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
96b79293 TT |
7800 | section->get_name (), |
7801 | section->get_file_name ()); | |
bf6af496 | 7802 | |
96b79293 | 7803 | section->read (objfile); |
ae038cb0 | 7804 | |
36586728 | 7805 | info_ptr = section->buffer; |
6e70227d | 7806 | |
36586728 | 7807 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 7808 | { |
ae038cb0 | 7809 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 7810 | |
9c541725 | 7811 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 7812 | |
f1902523 | 7813 | comp_unit_head cu_header; |
ed2dc618 SM |
7814 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
7815 | abbrev_section, info_ptr, | |
7816 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
7817 | |
7818 | /* Save the compilation unit for later lookup. */ | |
f1902523 JK |
7819 | if (cu_header.unit_type != DW_UT_type) |
7820 | { | |
7821 | this_cu = XOBNEW (&objfile->objfile_obstack, | |
7822 | struct dwarf2_per_cu_data); | |
7823 | memset (this_cu, 0, sizeof (*this_cu)); | |
7824 | } | |
7825 | else | |
7826 | { | |
7827 | auto sig_type = XOBNEW (&objfile->objfile_obstack, | |
7828 | struct signatured_type); | |
7829 | memset (sig_type, 0, sizeof (*sig_type)); | |
7830 | sig_type->signature = cu_header.signature; | |
7831 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
7832 | this_cu = &sig_type->per_cu; | |
7833 | } | |
7834 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 7835 | this_cu->sect_off = sect_off; |
f1902523 | 7836 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 7837 | this_cu->is_dwz = is_dwz; |
e3b94546 | 7838 | this_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
8a0459fd | 7839 | this_cu->section = section; |
ae038cb0 | 7840 | |
b76e467d | 7841 | dwarf2_per_objfile->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
7842 | |
7843 | info_ptr = info_ptr + this_cu->length; | |
7844 | } | |
36586728 TT |
7845 | } |
7846 | ||
7847 | /* Create a list of all compilation units in OBJFILE. | |
7848 | This is only done for -readnow and building partial symtabs. */ | |
7849 | ||
7850 | static void | |
ed2dc618 | 7851 | create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 7852 | { |
b76e467d | 7853 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
ed2dc618 | 7854 | read_comp_units_from_section (dwarf2_per_objfile, &dwarf2_per_objfile->info, |
b76e467d | 7855 | &dwarf2_per_objfile->abbrev, 0); |
36586728 | 7856 | |
b76e467d | 7857 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 7858 | if (dwz != NULL) |
ed2dc618 | 7859 | read_comp_units_from_section (dwarf2_per_objfile, &dwz->info, &dwz->abbrev, |
b76e467d | 7860 | 1); |
c906108c SS |
7861 | } |
7862 | ||
5734ee8b | 7863 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 7864 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 7865 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
7866 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
7867 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 7868 | |
72bf9492 DJ |
7869 | static void |
7870 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
7871 | CORE_ADDR *highpc, int set_addrmap, |
7872 | struct dwarf2_cu *cu) | |
c906108c | 7873 | { |
72bf9492 | 7874 | struct partial_die_info *pdi; |
c906108c | 7875 | |
91c24f0a DC |
7876 | /* Now, march along the PDI's, descending into ones which have |
7877 | interesting children but skipping the children of the other ones, | |
7878 | until we reach the end of the compilation unit. */ | |
c906108c | 7879 | |
72bf9492 | 7880 | pdi = first_die; |
91c24f0a | 7881 | |
72bf9492 DJ |
7882 | while (pdi != NULL) |
7883 | { | |
52356b79 | 7884 | pdi->fixup (cu); |
c906108c | 7885 | |
f55ee35c | 7886 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
7887 | children, so we need to look at them. Ditto for anonymous |
7888 | enums. */ | |
933c6fe4 | 7889 | |
72bf9492 | 7890 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 7891 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
7892 | || pdi->tag == DW_TAG_imported_unit |
7893 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 7894 | { |
72bf9492 | 7895 | switch (pdi->tag) |
c906108c SS |
7896 | { |
7897 | case DW_TAG_subprogram: | |
b1dc1806 | 7898 | case DW_TAG_inlined_subroutine: |
cdc07690 | 7899 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 7900 | break; |
72929c62 | 7901 | case DW_TAG_constant: |
c906108c SS |
7902 | case DW_TAG_variable: |
7903 | case DW_TAG_typedef: | |
91c24f0a | 7904 | case DW_TAG_union_type: |
72bf9492 | 7905 | if (!pdi->is_declaration) |
63d06c5c | 7906 | { |
72bf9492 | 7907 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
7908 | } |
7909 | break; | |
c906108c | 7910 | case DW_TAG_class_type: |
680b30c7 | 7911 | case DW_TAG_interface_type: |
c906108c | 7912 | case DW_TAG_structure_type: |
72bf9492 | 7913 | if (!pdi->is_declaration) |
c906108c | 7914 | { |
72bf9492 | 7915 | add_partial_symbol (pdi, cu); |
c906108c | 7916 | } |
b7fee5a3 KS |
7917 | if ((cu->language == language_rust |
7918 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
7919 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
7920 | set_addrmap, cu); | |
c906108c | 7921 | break; |
91c24f0a | 7922 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
7923 | if (!pdi->is_declaration) |
7924 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
7925 | break; |
7926 | case DW_TAG_base_type: | |
a02abb62 | 7927 | case DW_TAG_subrange_type: |
c906108c | 7928 | /* File scope base type definitions are added to the partial |
c5aa993b | 7929 | symbol table. */ |
72bf9492 | 7930 | add_partial_symbol (pdi, cu); |
c906108c | 7931 | break; |
d9fa45fe | 7932 | case DW_TAG_namespace: |
cdc07690 | 7933 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 7934 | break; |
5d7cb8df | 7935 | case DW_TAG_module: |
59c35742 AB |
7936 | if (!pdi->is_declaration) |
7937 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 7938 | break; |
95554aad TT |
7939 | case DW_TAG_imported_unit: |
7940 | { | |
7941 | struct dwarf2_per_cu_data *per_cu; | |
7942 | ||
f4dc4d17 DE |
7943 | /* For now we don't handle imported units in type units. */ |
7944 | if (cu->per_cu->is_debug_types) | |
7945 | { | |
7946 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
7947 | " supported in type units [in module %s]"), | |
518817b3 | 7948 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
7949 | } |
7950 | ||
e3b94546 SM |
7951 | per_cu = dwarf2_find_containing_comp_unit |
7952 | (pdi->d.sect_off, pdi->is_dwz, | |
518817b3 | 7953 | cu->per_cu->dwarf2_per_objfile); |
95554aad TT |
7954 | |
7955 | /* Go read the partial unit, if needed. */ | |
7956 | if (per_cu->v.psymtab == NULL) | |
135f5437 | 7957 | process_psymtab_comp_unit (per_cu, true, cu->language); |
95554aad | 7958 | |
ae640021 | 7959 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
7960 | } |
7961 | break; | |
74921315 KS |
7962 | case DW_TAG_imported_declaration: |
7963 | add_partial_symbol (pdi, cu); | |
7964 | break; | |
c906108c SS |
7965 | default: |
7966 | break; | |
7967 | } | |
7968 | } | |
7969 | ||
72bf9492 DJ |
7970 | /* If the die has a sibling, skip to the sibling. */ |
7971 | ||
7972 | pdi = pdi->die_sibling; | |
7973 | } | |
7974 | } | |
7975 | ||
7976 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 7977 | |
72bf9492 | 7978 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 7979 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
7980 | Enumerators are an exception; they use the scope of their parent |
7981 | enumeration type, i.e. the name of the enumeration type is not | |
7982 | prepended to the enumerator. | |
91c24f0a | 7983 | |
72bf9492 DJ |
7984 | There are two complexities. One is DW_AT_specification; in this |
7985 | case "parent" means the parent of the target of the specification, | |
7986 | instead of the direct parent of the DIE. The other is compilers | |
7987 | which do not emit DW_TAG_namespace; in this case we try to guess | |
7988 | the fully qualified name of structure types from their members' | |
7989 | linkage names. This must be done using the DIE's children rather | |
7990 | than the children of any DW_AT_specification target. We only need | |
7991 | to do this for structures at the top level, i.e. if the target of | |
7992 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
7993 | have a parent. */ | |
7994 | ||
7995 | /* Compute the scope prefix associated with PDI's parent, in | |
7996 | compilation unit CU. The result will be allocated on CU's | |
7997 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
7998 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 7999 | static const char * |
72bf9492 DJ |
8000 | partial_die_parent_scope (struct partial_die_info *pdi, |
8001 | struct dwarf2_cu *cu) | |
8002 | { | |
15d034d0 | 8003 | const char *grandparent_scope; |
72bf9492 | 8004 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8005 | |
72bf9492 DJ |
8006 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8007 | then this means the parent of the specification DIE. */ | |
8008 | ||
8009 | real_pdi = pdi; | |
72bf9492 | 8010 | while (real_pdi->has_specification) |
fb816e8b | 8011 | { |
122cf0f2 AB |
8012 | auto res = find_partial_die (real_pdi->spec_offset, |
8013 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8014 | real_pdi = res.pdi; |
8015 | cu = res.cu; | |
8016 | } | |
72bf9492 DJ |
8017 | |
8018 | parent = real_pdi->die_parent; | |
8019 | if (parent == NULL) | |
8020 | return NULL; | |
8021 | ||
8022 | if (parent->scope_set) | |
8023 | return parent->scope; | |
8024 | ||
52356b79 | 8025 | parent->fixup (cu); |
72bf9492 | 8026 | |
10b3939b | 8027 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8028 | |
acebe513 UW |
8029 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8030 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8031 | Work around this problem here. */ | |
8032 | if (cu->language == language_cplus | |
6e70227d | 8033 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
8034 | && strcmp (parent->name, "::") == 0 |
8035 | && grandparent_scope == NULL) | |
8036 | { | |
8037 | parent->scope = NULL; | |
8038 | parent->scope_set = 1; | |
8039 | return NULL; | |
8040 | } | |
8041 | ||
0a4b0913 | 8042 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
8043 | if (pdi->tag == DW_TAG_enumerator) |
8044 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8045 | parent->scope = grandparent_scope; | |
8046 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8047 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8048 | || parent->tag == DW_TAG_structure_type |
8049 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8050 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 8051 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
8052 | || parent->tag == DW_TAG_enumeration_type |
8053 | || (cu->language == language_fortran | |
8054 | && parent->tag == DW_TAG_subprogram | |
8055 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8056 | { |
8057 | if (grandparent_scope == NULL) | |
8058 | parent->scope = parent->name; | |
8059 | else | |
3e43a32a MS |
8060 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8061 | grandparent_scope, | |
f55ee35c | 8062 | parent->name, 0, cu); |
72bf9492 | 8063 | } |
72bf9492 DJ |
8064 | else |
8065 | { | |
8066 | /* FIXME drow/2004-04-01: What should we be doing with | |
8067 | function-local names? For partial symbols, we should probably be | |
8068 | ignoring them. */ | |
fa9c3fa0 TT |
8069 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8070 | dwarf_tag_name (parent->tag), | |
8071 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8072 | parent->scope = grandparent_scope; |
c906108c SS |
8073 | } |
8074 | ||
72bf9492 DJ |
8075 | parent->scope_set = 1; |
8076 | return parent->scope; | |
8077 | } | |
8078 | ||
8079 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8080 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8081 | |
43816ebc | 8082 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8083 | partial_die_full_name (struct partial_die_info *pdi, |
8084 | struct dwarf2_cu *cu) | |
8085 | { | |
15d034d0 | 8086 | const char *parent_scope; |
72bf9492 | 8087 | |
98bfdba5 PA |
8088 | /* If this is a template instantiation, we can not work out the |
8089 | template arguments from partial DIEs. So, unfortunately, we have | |
8090 | to go through the full DIEs. At least any work we do building | |
8091 | types here will be reused if full symbols are loaded later. */ | |
8092 | if (pdi->has_template_arguments) | |
8093 | { | |
52356b79 | 8094 | pdi->fixup (cu); |
98bfdba5 PA |
8095 | |
8096 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
8097 | { | |
8098 | struct die_info *die; | |
8099 | struct attribute attr; | |
8100 | struct dwarf2_cu *ref_cu = cu; | |
8101 | ||
b64f50a1 | 8102 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8103 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8104 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8105 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8106 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8107 | ||
43816ebc | 8108 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8109 | } |
8110 | } | |
8111 | ||
72bf9492 DJ |
8112 | parent_scope = partial_die_parent_scope (pdi, cu); |
8113 | if (parent_scope == NULL) | |
8114 | return NULL; | |
8115 | else | |
43816ebc TT |
8116 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
8117 | pdi->name, 0, cu)); | |
c906108c SS |
8118 | } |
8119 | ||
8120 | static void | |
72bf9492 | 8121 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8122 | { |
518817b3 SM |
8123 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8124 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 8125 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 8126 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 8127 | CORE_ADDR addr = 0; |
15d034d0 | 8128 | const char *actual_name = NULL; |
e142c38c DJ |
8129 | CORE_ADDR baseaddr; |
8130 | ||
b3b3bada | 8131 | baseaddr = objfile->text_section_offset (); |
c906108c | 8132 | |
43816ebc TT |
8133 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8134 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8135 | if (built_actual_name != NULL) |
43816ebc | 8136 | actual_name = built_actual_name.get (); |
63d06c5c | 8137 | |
72bf9492 DJ |
8138 | if (actual_name == NULL) |
8139 | actual_name = pdi->name; | |
8140 | ||
c906108c SS |
8141 | switch (pdi->tag) |
8142 | { | |
b1dc1806 | 8143 | case DW_TAG_inlined_subroutine: |
c906108c | 8144 | case DW_TAG_subprogram: |
79748972 TT |
8145 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8146 | - baseaddr); | |
0a4b0913 AB |
8147 | if (pdi->is_external |
8148 | || cu->language == language_ada | |
8149 | || (cu->language == language_fortran | |
8150 | && pdi->die_parent != NULL | |
8151 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8152 | { | |
8153 | /* Normally, only "external" DIEs are part of the global scope. | |
8154 | But in Ada and Fortran, we want to be able to access nested | |
8155 | procedures globally. So all Ada and Fortran subprograms are | |
8156 | stored in the global scope. */ | |
31edb802 | 8157 | add_psymbol_to_list (actual_name, |
15d034d0 | 8158 | built_actual_name != NULL, |
f47fb265 | 8159 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8160 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8161 | psymbol_placement::GLOBAL, |
79748972 TT |
8162 | addr, |
8163 | cu->language, objfile); | |
c906108c SS |
8164 | } |
8165 | else | |
8166 | { | |
31edb802 | 8167 | add_psymbol_to_list (actual_name, |
15d034d0 | 8168 | built_actual_name != NULL, |
f47fb265 | 8169 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8170 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8171 | psymbol_placement::STATIC, |
1762568f | 8172 | addr, cu->language, objfile); |
c906108c | 8173 | } |
0c1b455e TT |
8174 | |
8175 | if (pdi->main_subprogram && actual_name != NULL) | |
8176 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8177 | break; |
72929c62 | 8178 | case DW_TAG_constant: |
31edb802 | 8179 | add_psymbol_to_list (actual_name, |
75aedd27 TT |
8180 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
8181 | -1, (pdi->is_external | |
8182 | ? psymbol_placement::GLOBAL | |
8183 | : psymbol_placement::STATIC), | |
8184 | 0, cu->language, objfile); | |
72929c62 | 8185 | break; |
c906108c | 8186 | case DW_TAG_variable: |
95554aad TT |
8187 | if (pdi->d.locdesc) |
8188 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8189 | |
95554aad | 8190 | if (pdi->d.locdesc |
caac4577 JG |
8191 | && addr == 0 |
8192 | && !dwarf2_per_objfile->has_section_at_zero) | |
8193 | { | |
8194 | /* A global or static variable may also have been stripped | |
8195 | out by the linker if unused, in which case its address | |
8196 | will be nullified; do not add such variables into partial | |
8197 | symbol table then. */ | |
8198 | } | |
8199 | else if (pdi->is_external) | |
c906108c SS |
8200 | { |
8201 | /* Global Variable. | |
8202 | Don't enter into the minimal symbol tables as there is | |
8203 | a minimal symbol table entry from the ELF symbols already. | |
8204 | Enter into partial symbol table if it has a location | |
8205 | descriptor or a type. | |
8206 | If the location descriptor is missing, new_symbol will create | |
8207 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8208 | be determined from the minimal symbol table whenever the variable | |
8209 | is referenced. | |
8210 | The address for the partial symbol table entry is not | |
8211 | used by GDB, but it comes in handy for debugging partial symbol | |
8212 | table building. */ | |
8213 | ||
95554aad | 8214 | if (pdi->d.locdesc || pdi->has_type) |
31edb802 | 8215 | add_psymbol_to_list (actual_name, |
15d034d0 | 8216 | built_actual_name != NULL, |
f47fb265 | 8217 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 8218 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8219 | psymbol_placement::GLOBAL, |
79748972 | 8220 | addr, cu->language, objfile); |
c906108c SS |
8221 | } |
8222 | else | |
8223 | { | |
ff908ebf AW |
8224 | int has_loc = pdi->d.locdesc != NULL; |
8225 | ||
8226 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8227 | without location descriptors or constant values). */ | |
8228 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8229 | return; |
ff908ebf | 8230 | |
31edb802 | 8231 | add_psymbol_to_list (actual_name, |
15d034d0 | 8232 | built_actual_name != NULL, |
f47fb265 | 8233 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 8234 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8235 | psymbol_placement::STATIC, |
79748972 | 8236 | has_loc ? addr : 0, |
f47fb265 | 8237 | cu->language, objfile); |
c906108c SS |
8238 | } |
8239 | break; | |
8240 | case DW_TAG_typedef: | |
8241 | case DW_TAG_base_type: | |
a02abb62 | 8242 | case DW_TAG_subrange_type: |
31edb802 | 8243 | add_psymbol_to_list (actual_name, |
15d034d0 | 8244 | built_actual_name != NULL, |
79748972 | 8245 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 8246 | psymbol_placement::STATIC, |
1762568f | 8247 | 0, cu->language, objfile); |
c906108c | 8248 | break; |
74921315 | 8249 | case DW_TAG_imported_declaration: |
72bf9492 | 8250 | case DW_TAG_namespace: |
31edb802 | 8251 | add_psymbol_to_list (actual_name, |
15d034d0 | 8252 | built_actual_name != NULL, |
79748972 | 8253 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 8254 | psymbol_placement::GLOBAL, |
1762568f | 8255 | 0, cu->language, objfile); |
72bf9492 | 8256 | break; |
530e8392 | 8257 | case DW_TAG_module: |
a5fd13a9 BH |
8258 | /* With Fortran 77 there might be a "BLOCK DATA" module |
8259 | available without any name. If so, we skip the module as it | |
8260 | doesn't bring any value. */ | |
8261 | if (actual_name != nullptr) | |
31edb802 | 8262 | add_psymbol_to_list (actual_name, |
a5fd13a9 BH |
8263 | built_actual_name != NULL, |
8264 | MODULE_DOMAIN, LOC_TYPEDEF, -1, | |
8265 | psymbol_placement::GLOBAL, | |
8266 | 0, cu->language, objfile); | |
530e8392 | 8267 | break; |
c906108c | 8268 | case DW_TAG_class_type: |
680b30c7 | 8269 | case DW_TAG_interface_type: |
c906108c SS |
8270 | case DW_TAG_structure_type: |
8271 | case DW_TAG_union_type: | |
8272 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
8273 | /* Skip external references. The DWARF standard says in the section |
8274 | about "Structure, Union, and Class Type Entries": "An incomplete | |
8275 | structure, union or class type is represented by a structure, | |
8276 | union or class entry that does not have a byte size attribute | |
8277 | and that has a DW_AT_declaration attribute." */ | |
8278 | if (!pdi->has_byte_size && pdi->is_declaration) | |
43816ebc | 8279 | return; |
fa4028e9 | 8280 | |
63d06c5c DC |
8281 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8282 | static vs. global. */ | |
31edb802 | 8283 | add_psymbol_to_list (actual_name, |
15d034d0 | 8284 | built_actual_name != NULL, |
79748972 | 8285 | STRUCT_DOMAIN, LOC_TYPEDEF, -1, |
9c37b5ae | 8286 | cu->language == language_cplus |
75aedd27 TT |
8287 | ? psymbol_placement::GLOBAL |
8288 | : psymbol_placement::STATIC, | |
1762568f | 8289 | 0, cu->language, objfile); |
c906108c | 8290 | |
c906108c SS |
8291 | break; |
8292 | case DW_TAG_enumerator: | |
31edb802 | 8293 | add_psymbol_to_list (actual_name, |
15d034d0 | 8294 | built_actual_name != NULL, |
79748972 | 8295 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 8296 | cu->language == language_cplus |
75aedd27 TT |
8297 | ? psymbol_placement::GLOBAL |
8298 | : psymbol_placement::STATIC, | |
1762568f | 8299 | 0, cu->language, objfile); |
c906108c SS |
8300 | break; |
8301 | default: | |
8302 | break; | |
8303 | } | |
8304 | } | |
8305 | ||
5c4e30ca DC |
8306 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8307 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8308 | the name of the enclosing namespace. */ | |
91c24f0a | 8309 | |
72bf9492 DJ |
8310 | static void |
8311 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8312 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8313 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8314 | { |
72bf9492 | 8315 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8316 | |
72bf9492 | 8317 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8318 | |
8319 | /* Now scan partial symbols in that namespace. */ | |
8320 | ||
91c24f0a | 8321 | if (pdi->has_children) |
cdc07690 | 8322 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8323 | } |
8324 | ||
5d7cb8df JK |
8325 | /* Read a partial die corresponding to a Fortran module. */ |
8326 | ||
8327 | static void | |
8328 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8329 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8330 | { |
530e8392 KB |
8331 | /* Add a symbol for the namespace. */ |
8332 | ||
8333 | add_partial_symbol (pdi, cu); | |
8334 | ||
f55ee35c | 8335 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8336 | |
8337 | if (pdi->has_children) | |
cdc07690 | 8338 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8339 | } |
8340 | ||
b1dc1806 XR |
8341 | /* Read a partial die corresponding to a subprogram or an inlined |
8342 | subprogram and create a partial symbol for that subprogram. | |
8343 | When the CU language allows it, this routine also defines a partial | |
8344 | symbol for each nested subprogram that this subprogram contains. | |
8345 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8346 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8347 | |
cdc07690 YQ |
8348 | PDI may also be a lexical block, in which case we simply search |
8349 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8350 | Again, this is only performed when the CU language allows this |
8351 | type of definitions. */ | |
8352 | ||
8353 | static void | |
8354 | add_partial_subprogram (struct partial_die_info *pdi, | |
8355 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8356 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8357 | { |
b1dc1806 | 8358 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8359 | { |
8360 | if (pdi->has_pc_info) | |
8361 | { | |
8362 | if (pdi->lowpc < *lowpc) | |
8363 | *lowpc = pdi->lowpc; | |
8364 | if (pdi->highpc > *highpc) | |
8365 | *highpc = pdi->highpc; | |
cdc07690 | 8366 | if (set_addrmap) |
5734ee8b | 8367 | { |
518817b3 | 8368 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a MR |
8369 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
8370 | CORE_ADDR baseaddr; | |
b926417a TT |
8371 | CORE_ADDR this_highpc; |
8372 | CORE_ADDR this_lowpc; | |
5734ee8b | 8373 | |
b3b3bada | 8374 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8375 | this_lowpc |
8376 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8377 | pdi->lowpc + baseaddr) | |
8378 | - baseaddr); | |
8379 | this_highpc | |
8380 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8381 | pdi->highpc + baseaddr) | |
8382 | - baseaddr); | |
d320c2b5 | 8383 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 8384 | this_lowpc, this_highpc - 1, |
9291a0cd | 8385 | cu->per_cu->v.psymtab); |
5734ee8b | 8386 | } |
481860b3 GB |
8387 | } |
8388 | ||
8389 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8390 | { | |
bc30ff58 | 8391 | if (!pdi->is_declaration) |
e8d05480 JB |
8392 | /* Ignore subprogram DIEs that do not have a name, they are |
8393 | illegal. Do not emit a complaint at this point, we will | |
8394 | do so when we convert this psymtab into a symtab. */ | |
8395 | if (pdi->name) | |
8396 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
8397 | } |
8398 | } | |
6e70227d | 8399 | |
bc30ff58 JB |
8400 | if (! pdi->has_children) |
8401 | return; | |
8402 | ||
0a4b0913 | 8403 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8404 | { |
8405 | pdi = pdi->die_child; | |
8406 | while (pdi != NULL) | |
8407 | { | |
52356b79 | 8408 | pdi->fixup (cu); |
bc30ff58 | 8409 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8410 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8411 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8412 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8413 | pdi = pdi->die_sibling; |
8414 | } | |
8415 | } | |
8416 | } | |
8417 | ||
91c24f0a DC |
8418 | /* Read a partial die corresponding to an enumeration type. */ |
8419 | ||
72bf9492 DJ |
8420 | static void |
8421 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8422 | struct dwarf2_cu *cu) | |
91c24f0a | 8423 | { |
72bf9492 | 8424 | struct partial_die_info *pdi; |
91c24f0a DC |
8425 | |
8426 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
8427 | add_partial_symbol (enum_pdi, cu); |
8428 | ||
8429 | pdi = enum_pdi->die_child; | |
8430 | while (pdi) | |
91c24f0a | 8431 | { |
72bf9492 | 8432 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
b98664d3 | 8433 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8434 | else |
72bf9492 DJ |
8435 | add_partial_symbol (pdi, cu); |
8436 | pdi = pdi->die_sibling; | |
91c24f0a | 8437 | } |
91c24f0a DC |
8438 | } |
8439 | ||
6caca83c CC |
8440 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8441 | ||
8442 | static unsigned int | |
d521ce57 | 8443 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8444 | { |
8445 | unsigned int bytes_read; | |
8446 | ||
8447 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8448 | } | |
8449 | ||
685af9cd TT |
8450 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8451 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8452 | ||
4bb7a0a7 DJ |
8453 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8454 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8455 | the initial number. */ | |
8456 | ||
8457 | static struct abbrev_info * | |
685af9cd TT |
8458 | peek_die_abbrev (const die_reader_specs &reader, |
8459 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8460 | { |
685af9cd | 8461 | dwarf2_cu *cu = reader.cu; |
518817b3 | 8462 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
685af9cd TT |
8463 | unsigned int abbrev_number |
8464 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8465 | |
8466 | if (abbrev_number == 0) | |
8467 | return NULL; | |
8468 | ||
685af9cd | 8469 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
8470 | if (!abbrev) |
8471 | { | |
422b9917 | 8472 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8473 | " at offset %s [in module %s]"), |
422b9917 | 8474 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8475 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8476 | } |
8477 | ||
8478 | return abbrev; | |
8479 | } | |
8480 | ||
93311388 DE |
8481 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8482 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8483 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8484 | ||
d521ce57 TT |
8485 | static const gdb_byte * |
8486 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8487 | { |
4bb7a0a7 DJ |
8488 | while (1) |
8489 | { | |
685af9cd TT |
8490 | unsigned int bytes_read; |
8491 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
8492 | ||
4bb7a0a7 DJ |
8493 | if (abbrev == NULL) |
8494 | return info_ptr + bytes_read; | |
8495 | else | |
dee91e82 | 8496 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8497 | } |
8498 | } | |
8499 | ||
93311388 DE |
8500 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8501 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8502 | abbrev corresponding to that skipped uleb128 should be passed in |
8503 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8504 | children. */ | |
8505 | ||
d521ce57 TT |
8506 | static const gdb_byte * |
8507 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 8508 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8509 | { |
8510 | unsigned int bytes_read; | |
8511 | struct attribute attr; | |
dee91e82 DE |
8512 | bfd *abfd = reader->abfd; |
8513 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8514 | const gdb_byte *buffer = reader->buffer; |
f664829e | 8515 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
8516 | unsigned int form, i; |
8517 | ||
8518 | for (i = 0; i < abbrev->num_attrs; i++) | |
8519 | { | |
8520 | /* The only abbrev we care about is DW_AT_sibling. */ | |
8521 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
8522 | { | |
18a8505e AT |
8523 | bool ignored; |
8524 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr, | |
8525 | &ignored); | |
4bb7a0a7 | 8526 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 8527 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 8528 | else |
b9502d3f | 8529 | { |
9c541725 PA |
8530 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
8531 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
8532 | |
8533 | if (sibling_ptr < info_ptr) | |
b98664d3 | 8534 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 KS |
8535 | else if (sibling_ptr > reader->buffer_end) |
8536 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
8537 | else |
8538 | return sibling_ptr; | |
8539 | } | |
4bb7a0a7 DJ |
8540 | } |
8541 | ||
8542 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
8543 | form = abbrev->attrs[i].form; | |
8544 | skip_attribute: | |
8545 | switch (form) | |
8546 | { | |
4bb7a0a7 | 8547 | case DW_FORM_ref_addr: |
ae411497 TT |
8548 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
8549 | and later it is offset sized. */ | |
8550 | if (cu->header.version == 2) | |
8551 | info_ptr += cu->header.addr_size; | |
8552 | else | |
8553 | info_ptr += cu->header.offset_size; | |
8554 | break; | |
36586728 TT |
8555 | case DW_FORM_GNU_ref_alt: |
8556 | info_ptr += cu->header.offset_size; | |
8557 | break; | |
ae411497 | 8558 | case DW_FORM_addr: |
4bb7a0a7 DJ |
8559 | info_ptr += cu->header.addr_size; |
8560 | break; | |
8561 | case DW_FORM_data1: | |
8562 | case DW_FORM_ref1: | |
8563 | case DW_FORM_flag: | |
8fe0f950 | 8564 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
8565 | info_ptr += 1; |
8566 | break; | |
2dc7f7b3 | 8567 | case DW_FORM_flag_present: |
43988095 | 8568 | case DW_FORM_implicit_const: |
2dc7f7b3 | 8569 | break; |
4bb7a0a7 DJ |
8570 | case DW_FORM_data2: |
8571 | case DW_FORM_ref2: | |
8fe0f950 | 8572 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
8573 | info_ptr += 2; |
8574 | break; | |
8fe0f950 AT |
8575 | case DW_FORM_strx3: |
8576 | info_ptr += 3; | |
8577 | break; | |
4bb7a0a7 DJ |
8578 | case DW_FORM_data4: |
8579 | case DW_FORM_ref4: | |
8fe0f950 | 8580 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
8581 | info_ptr += 4; |
8582 | break; | |
8583 | case DW_FORM_data8: | |
8584 | case DW_FORM_ref8: | |
55f1336d | 8585 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
8586 | info_ptr += 8; |
8587 | break; | |
0224619f JK |
8588 | case DW_FORM_data16: |
8589 | info_ptr += 16; | |
8590 | break; | |
4bb7a0a7 | 8591 | case DW_FORM_string: |
9b1c24c8 | 8592 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
8593 | info_ptr += bytes_read; |
8594 | break; | |
2dc7f7b3 | 8595 | case DW_FORM_sec_offset: |
4bb7a0a7 | 8596 | case DW_FORM_strp: |
36586728 | 8597 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
8598 | info_ptr += cu->header.offset_size; |
8599 | break; | |
2dc7f7b3 | 8600 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
8601 | case DW_FORM_block: |
8602 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8603 | info_ptr += bytes_read; | |
8604 | break; | |
8605 | case DW_FORM_block1: | |
8606 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
8607 | break; | |
8608 | case DW_FORM_block2: | |
8609 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
8610 | break; | |
8611 | case DW_FORM_block4: | |
8612 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
8613 | break; | |
336d760d | 8614 | case DW_FORM_addrx: |
cf532bd1 | 8615 | case DW_FORM_strx: |
4bb7a0a7 DJ |
8616 | case DW_FORM_sdata: |
8617 | case DW_FORM_udata: | |
8618 | case DW_FORM_ref_udata: | |
3019eac3 DE |
8619 | case DW_FORM_GNU_addr_index: |
8620 | case DW_FORM_GNU_str_index: | |
18a8505e | 8621 | case DW_FORM_rnglistx: |
d521ce57 | 8622 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
8623 | break; |
8624 | case DW_FORM_indirect: | |
8625 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8626 | info_ptr += bytes_read; | |
8627 | /* We need to continue parsing from here, so just go back to | |
8628 | the top. */ | |
8629 | goto skip_attribute; | |
8630 | ||
8631 | default: | |
3e43a32a MS |
8632 | error (_("Dwarf Error: Cannot handle %s " |
8633 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
8634 | dwarf_form_name (form), |
8635 | bfd_get_filename (abfd)); | |
8636 | } | |
8637 | } | |
8638 | ||
8639 | if (abbrev->has_children) | |
dee91e82 | 8640 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
8641 | else |
8642 | return info_ptr; | |
8643 | } | |
8644 | ||
93311388 | 8645 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 8646 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 8647 | |
d521ce57 | 8648 | static const gdb_byte * |
dee91e82 DE |
8649 | locate_pdi_sibling (const struct die_reader_specs *reader, |
8650 | struct partial_die_info *orig_pdi, | |
d521ce57 | 8651 | const gdb_byte *info_ptr) |
91c24f0a DC |
8652 | { |
8653 | /* Do we know the sibling already? */ | |
72bf9492 | 8654 | |
91c24f0a DC |
8655 | if (orig_pdi->sibling) |
8656 | return orig_pdi->sibling; | |
8657 | ||
8658 | /* Are there any children to deal with? */ | |
8659 | ||
8660 | if (!orig_pdi->has_children) | |
8661 | return info_ptr; | |
8662 | ||
4bb7a0a7 | 8663 | /* Skip the children the long way. */ |
91c24f0a | 8664 | |
dee91e82 | 8665 | return skip_children (reader, info_ptr); |
91c24f0a DC |
8666 | } |
8667 | ||
257e7a09 | 8668 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 8669 | not NULL. */ |
c906108c | 8670 | |
891813be TT |
8671 | void |
8672 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 8673 | { |
ed2dc618 SM |
8674 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8675 | = get_dwarf2_per_objfile (objfile); | |
8676 | ||
077cbab2 TT |
8677 | gdb_assert (!readin); |
8678 | /* If this psymtab is constructed from a debug-only objfile, the | |
8679 | has_section_at_zero flag will not necessarily be correct. We | |
8680 | can get the correct value for this flag by looking at the data | |
8681 | associated with the (presumably stripped) associated objfile. */ | |
8682 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 8683 | { |
077cbab2 TT |
8684 | struct dwarf2_per_objfile *dpo_backlink |
8685 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); | |
c906108c | 8686 | |
077cbab2 TT |
8687 | dwarf2_per_objfile->has_section_at_zero |
8688 | = dpo_backlink->has_section_at_zero; | |
8689 | } | |
98bfdba5 | 8690 | |
8566b89b | 8691 | expand_psymtab (objfile); |
95554aad | 8692 | |
ed2dc618 | 8693 | process_cu_includes (dwarf2_per_objfile); |
c906108c | 8694 | } |
9cdd5dbd DE |
8695 | \f |
8696 | /* Reading in full CUs. */ | |
c906108c | 8697 | |
10b3939b DJ |
8698 | /* Add PER_CU to the queue. */ |
8699 | ||
8700 | static void | |
95554aad TT |
8701 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
8702 | enum language pretend_language) | |
10b3939b | 8703 | { |
10b3939b | 8704 | per_cu->queued = 1; |
39856def | 8705 | per_cu->dwarf2_per_objfile->queue.emplace (per_cu, pretend_language); |
10b3939b DJ |
8706 | } |
8707 | ||
89e63ee4 DE |
8708 | /* If PER_CU is not yet queued, add it to the queue. |
8709 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
8710 | dependency. | |
0907af0c | 8711 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
8712 | meaning either PER_CU is already queued or it is already loaded. |
8713 | ||
8714 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
8715 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
8716 | |
8717 | static int | |
89e63ee4 | 8718 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
8719 | struct dwarf2_per_cu_data *per_cu, |
8720 | enum language pretend_language) | |
8721 | { | |
8722 | /* We may arrive here during partial symbol reading, if we need full | |
8723 | DIEs to process an unusual case (e.g. template arguments). Do | |
8724 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
ed2dc618 | 8725 | if (per_cu->dwarf2_per_objfile->reading_partial_symbols) |
0907af0c DE |
8726 | { |
8727 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
8728 | return 1; | |
8729 | return 0; | |
8730 | } | |
8731 | ||
8732 | /* Mark the dependence relation so that we don't flush PER_CU | |
8733 | too early. */ | |
89e63ee4 DE |
8734 | if (dependent_cu != NULL) |
8735 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
8736 | |
8737 | /* If it's already on the queue, we have nothing to do. */ | |
8738 | if (per_cu->queued) | |
8739 | return 0; | |
8740 | ||
8741 | /* If the compilation unit is already loaded, just mark it as | |
8742 | used. */ | |
8743 | if (per_cu->cu != NULL) | |
8744 | { | |
8745 | per_cu->cu->last_used = 0; | |
8746 | return 0; | |
8747 | } | |
8748 | ||
8749 | /* Add it to the queue. */ | |
8750 | queue_comp_unit (per_cu, pretend_language); | |
8751 | ||
8752 | return 1; | |
8753 | } | |
8754 | ||
10b3939b DJ |
8755 | /* Process the queue. */ |
8756 | ||
8757 | static void | |
ed2dc618 | 8758 | process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile) |
10b3939b | 8759 | { |
b4f54984 | 8760 | if (dwarf_read_debug) |
45cfd468 DE |
8761 | { |
8762 | fprintf_unfiltered (gdb_stdlog, | |
8763 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 8764 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
8765 | } |
8766 | ||
03dd20cc DJ |
8767 | /* The queue starts out with one item, but following a DIE reference |
8768 | may load a new CU, adding it to the end of the queue. */ | |
39856def | 8769 | while (!dwarf2_per_objfile->queue.empty ()) |
10b3939b | 8770 | { |
39856def TT |
8771 | dwarf2_queue_item &item = dwarf2_per_objfile->queue.front (); |
8772 | ||
cc12ce38 | 8773 | if ((dwarf2_per_objfile->using_index |
39856def TT |
8774 | ? !item.per_cu->v.quick->compunit_symtab |
8775 | : (item.per_cu->v.psymtab && !item.per_cu->v.psymtab->readin)) | |
cc12ce38 | 8776 | /* Skip dummy CUs. */ |
39856def | 8777 | && item.per_cu->cu != NULL) |
f4dc4d17 | 8778 | { |
39856def | 8779 | struct dwarf2_per_cu_data *per_cu = item.per_cu; |
73be47f5 | 8780 | unsigned int debug_print_threshold; |
247f5c4f | 8781 | char buf[100]; |
f4dc4d17 | 8782 | |
247f5c4f | 8783 | if (per_cu->is_debug_types) |
f4dc4d17 | 8784 | { |
247f5c4f DE |
8785 | struct signatured_type *sig_type = |
8786 | (struct signatured_type *) per_cu; | |
8787 | ||
9d8780f0 | 8788 | sprintf (buf, "TU %s at offset %s", |
73be47f5 | 8789 | hex_string (sig_type->signature), |
9d8780f0 | 8790 | sect_offset_str (per_cu->sect_off)); |
73be47f5 DE |
8791 | /* There can be 100s of TUs. |
8792 | Only print them in verbose mode. */ | |
8793 | debug_print_threshold = 2; | |
f4dc4d17 | 8794 | } |
247f5c4f | 8795 | else |
73be47f5 | 8796 | { |
9d8780f0 SM |
8797 | sprintf (buf, "CU at offset %s", |
8798 | sect_offset_str (per_cu->sect_off)); | |
73be47f5 DE |
8799 | debug_print_threshold = 1; |
8800 | } | |
247f5c4f | 8801 | |
b4f54984 | 8802 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 8803 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
8804 | |
8805 | if (per_cu->is_debug_types) | |
39856def | 8806 | process_full_type_unit (per_cu, item.pretend_language); |
f4dc4d17 | 8807 | else |
39856def | 8808 | process_full_comp_unit (per_cu, item.pretend_language); |
f4dc4d17 | 8809 | |
b4f54984 | 8810 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 8811 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 8812 | } |
10b3939b | 8813 | |
39856def TT |
8814 | item.per_cu->queued = 0; |
8815 | dwarf2_per_objfile->queue.pop (); | |
10b3939b DJ |
8816 | } |
8817 | ||
b4f54984 | 8818 | if (dwarf_read_debug) |
45cfd468 DE |
8819 | { |
8820 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 8821 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 8822 | } |
10b3939b DJ |
8823 | } |
8824 | ||
10b3939b DJ |
8825 | /* Read in full symbols for PST, and anything it depends on. */ |
8826 | ||
8566b89b TT |
8827 | void |
8828 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 8829 | { |
10b3939b | 8830 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 | 8831 | |
8566b89b | 8832 | if (readin) |
95554aad TT |
8833 | return; |
8834 | ||
0494dbec | 8835 | read_dependencies (objfile); |
aaa75496 | 8836 | |
8566b89b | 8837 | per_cu = per_cu_data; |
10b3939b DJ |
8838 | |
8839 | if (per_cu == NULL) | |
aaa75496 JB |
8840 | { |
8841 | /* It's an include file, no symbols to read for it. | |
8842 | Everything is in the parent symtab. */ | |
8566b89b | 8843 | readin = true; |
aaa75496 JB |
8844 | return; |
8845 | } | |
c906108c | 8846 | |
58f0c718 | 8847 | dw2_do_instantiate_symtab (per_cu, false); |
10b3939b DJ |
8848 | } |
8849 | ||
dee91e82 DE |
8850 | /* Trivial hash function for die_info: the hash value of a DIE |
8851 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 8852 | |
dee91e82 DE |
8853 | static hashval_t |
8854 | die_hash (const void *item) | |
10b3939b | 8855 | { |
9a3c8263 | 8856 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 8857 | |
9c541725 | 8858 | return to_underlying (die->sect_off); |
dee91e82 | 8859 | } |
63d06c5c | 8860 | |
dee91e82 DE |
8861 | /* Trivial comparison function for die_info structures: two DIEs |
8862 | are equal if they have the same offset. */ | |
98bfdba5 | 8863 | |
dee91e82 DE |
8864 | static int |
8865 | die_eq (const void *item_lhs, const void *item_rhs) | |
8866 | { | |
9a3c8263 SM |
8867 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
8868 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 8869 | |
9c541725 | 8870 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 8871 | } |
c906108c | 8872 | |
c0ab21c2 | 8873 | /* Load the DIEs associated with PER_CU into memory. */ |
c906108c | 8874 | |
dee91e82 | 8875 | static void |
c0ab21c2 TT |
8876 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
8877 | bool skip_partial, | |
8878 | enum language pretend_language) | |
dee91e82 | 8879 | { |
c0ab21c2 TT |
8880 | gdb_assert (! this_cu->is_debug_types); |
8881 | ||
6751ebae | 8882 | cutu_reader reader (this_cu, NULL, 1, skip_partial); |
c0ab21c2 TT |
8883 | if (reader.dummy_p) |
8884 | return; | |
8885 | ||
8886 | struct dwarf2_cu *cu = reader.cu; | |
8887 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 8888 | |
dee91e82 DE |
8889 | gdb_assert (cu->die_hash == NULL); |
8890 | cu->die_hash = | |
8891 | htab_create_alloc_ex (cu->header.length / 12, | |
8892 | die_hash, | |
8893 | die_eq, | |
8894 | NULL, | |
8895 | &cu->comp_unit_obstack, | |
8896 | hashtab_obstack_allocate, | |
8897 | dummy_obstack_deallocate); | |
e142c38c | 8898 | |
3e225074 | 8899 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
8900 | reader.comp_unit_die->child |
8901 | = read_die_and_siblings (&reader, reader.info_ptr, | |
8902 | &info_ptr, reader.comp_unit_die); | |
8903 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 8904 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
8905 | |
8906 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 8907 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 8908 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
8909 | or we won't be able to build types correctly. |
8910 | Similarly, if we do not read the producer, we can not apply | |
8911 | producer-specific interpretation. */ | |
c0ab21c2 | 8912 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
6751ebae TT |
8913 | |
8914 | reader.keep (); | |
10b3939b DJ |
8915 | } |
8916 | ||
3da10d80 KS |
8917 | /* Add a DIE to the delayed physname list. */ |
8918 | ||
8919 | static void | |
8920 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
8921 | const char *name, struct die_info *die, | |
8922 | struct dwarf2_cu *cu) | |
8923 | { | |
8924 | struct delayed_method_info mi; | |
8925 | mi.type = type; | |
8926 | mi.fnfield_index = fnfield_index; | |
8927 | mi.index = index; | |
8928 | mi.name = name; | |
8929 | mi.die = die; | |
c89b44cd | 8930 | cu->method_list.push_back (mi); |
3da10d80 KS |
8931 | } |
8932 | ||
3693fdb3 PA |
8933 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
8934 | "const" / "volatile". If so, decrements LEN by the length of the | |
8935 | modifier and return true. Otherwise return false. */ | |
8936 | ||
8937 | template<size_t N> | |
8938 | static bool | |
8939 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
8940 | { | |
8941 | size_t mod_len = sizeof (mod) - 1; | |
8942 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
8943 | { | |
8944 | len -= mod_len; | |
8945 | return true; | |
8946 | } | |
8947 | return false; | |
8948 | } | |
8949 | ||
3da10d80 KS |
8950 | /* Compute the physnames of any methods on the CU's method list. |
8951 | ||
8952 | The computation of method physnames is delayed in order to avoid the | |
8953 | (bad) condition that one of the method's formal parameters is of an as yet | |
8954 | incomplete type. */ | |
8955 | ||
8956 | static void | |
8957 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
8958 | { | |
3693fdb3 | 8959 | /* Only C++ delays computing physnames. */ |
c89b44cd | 8960 | if (cu->method_list.empty ()) |
3693fdb3 PA |
8961 | return; |
8962 | gdb_assert (cu->language == language_cplus); | |
8963 | ||
52941706 | 8964 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 8965 | { |
1d06ead6 | 8966 | const char *physname; |
3da10d80 | 8967 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
8968 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
8969 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
8970 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 8971 | = physname ? physname : ""; |
3693fdb3 PA |
8972 | |
8973 | /* Since there's no tag to indicate whether a method is a | |
8974 | const/volatile overload, extract that information out of the | |
8975 | demangled name. */ | |
8976 | if (physname != NULL) | |
8977 | { | |
8978 | size_t len = strlen (physname); | |
8979 | ||
8980 | while (1) | |
8981 | { | |
8982 | if (physname[len] == ')') /* shortcut */ | |
8983 | break; | |
8984 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 8985 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 8986 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 8987 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
8988 | else |
8989 | break; | |
8990 | } | |
8991 | } | |
3da10d80 | 8992 | } |
c89b44cd TT |
8993 | |
8994 | /* The list is no longer needed. */ | |
8995 | cu->method_list.clear (); | |
3da10d80 KS |
8996 | } |
8997 | ||
a766d390 DE |
8998 | /* Go objects should be embedded in a DW_TAG_module DIE, |
8999 | and it's not clear if/how imported objects will appear. | |
9000 | To keep Go support simple until that's worked out, | |
9001 | go back through what we've read and create something usable. | |
9002 | We could do this while processing each DIE, and feels kinda cleaner, | |
9003 | but that way is more invasive. | |
9004 | This is to, for example, allow the user to type "p var" or "b main" | |
9005 | without having to specify the package name, and allow lookups | |
9006 | of module.object to work in contexts that use the expression | |
9007 | parser. */ | |
9008 | ||
9009 | static void | |
9010 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9011 | { | |
421d1616 | 9012 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
9013 | struct pending *list; |
9014 | int i; | |
9015 | ||
c24bdb02 | 9016 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9017 | list != NULL; |
9018 | list = list->next) | |
a766d390 DE |
9019 | { |
9020 | for (i = 0; i < list->nsyms; ++i) | |
9021 | { | |
9022 | struct symbol *sym = list->symbol[i]; | |
9023 | ||
c1b5c1eb | 9024 | if (sym->language () == language_go |
a766d390 DE |
9025 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9026 | { | |
421d1616 TT |
9027 | gdb::unique_xmalloc_ptr<char> this_package_name |
9028 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9029 | |
9030 | if (this_package_name == NULL) | |
9031 | continue; | |
9032 | if (package_name == NULL) | |
421d1616 | 9033 | package_name = std::move (this_package_name); |
a766d390 DE |
9034 | else |
9035 | { | |
518817b3 SM |
9036 | struct objfile *objfile |
9037 | = cu->per_cu->dwarf2_per_objfile->objfile; | |
421d1616 | 9038 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9039 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9040 | (symbol_symtab (sym) != NULL |
9041 | ? symtab_to_filename_for_display | |
9042 | (symbol_symtab (sym)) | |
e3b94546 | 9043 | : objfile_name (objfile)), |
421d1616 | 9044 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9045 | } |
9046 | } | |
9047 | } | |
9048 | } | |
9049 | ||
9050 | if (package_name != NULL) | |
9051 | { | |
518817b3 | 9052 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
34a68019 | 9053 | const char *saved_package_name |
421d1616 | 9054 | = obstack_strdup (&objfile->per_bfd->storage_obstack, package_name.get ()); |
19f392bc UW |
9055 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9056 | saved_package_name); | |
a766d390 DE |
9057 | struct symbol *sym; |
9058 | ||
e623cf5d | 9059 | sym = allocate_symbol (objfile); |
d3ecddab | 9060 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9061 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9062 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9063 | e.g., "main" finds the "main" module and not C's main(). */ | |
9064 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9065 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9066 | SYMBOL_TYPE (sym) = type; |
9067 | ||
c24bdb02 | 9068 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9069 | } |
9070 | } | |
9071 | ||
c9317f21 TT |
9072 | /* Allocate a fully-qualified name consisting of the two parts on the |
9073 | obstack. */ | |
9074 | ||
9075 | static const char * | |
9076 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9077 | { | |
9078 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9079 | } | |
9080 | ||
9081 | /* A helper that allocates a struct discriminant_info to attach to a | |
9082 | union type. */ | |
9083 | ||
9084 | static struct discriminant_info * | |
9085 | alloc_discriminant_info (struct type *type, int discriminant_index, | |
9086 | int default_index) | |
9087 | { | |
9088 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
c7b15a66 TT |
9089 | gdb_assert (discriminant_index == -1 |
9090 | || (discriminant_index >= 0 | |
9091 | && discriminant_index < TYPE_NFIELDS (type))); | |
c9317f21 | 9092 | gdb_assert (default_index == -1 |
c7b15a66 | 9093 | || (default_index >= 0 && default_index < TYPE_NFIELDS (type))); |
c9317f21 TT |
9094 | |
9095 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
9096 | ||
9097 | struct discriminant_info *disc | |
9098 | = ((struct discriminant_info *) | |
9099 | TYPE_ZALLOC (type, | |
9100 | offsetof (struct discriminant_info, discriminants) | |
9101 | + TYPE_NFIELDS (type) * sizeof (disc->discriminants[0]))); | |
9102 | disc->default_index = default_index; | |
9103 | disc->discriminant_index = discriminant_index; | |
9104 | ||
9105 | struct dynamic_prop prop; | |
9106 | prop.kind = PROP_UNDEFINED; | |
9107 | prop.data.baton = disc; | |
9108 | ||
9109 | add_dyn_prop (DYN_PROP_DISCRIMINATED, prop, type); | |
9110 | ||
9111 | return disc; | |
9112 | } | |
9113 | ||
9114 | /* Some versions of rustc emitted enums in an unusual way. | |
9115 | ||
9116 | Ordinary enums were emitted as unions. The first element of each | |
9117 | structure in the union was named "RUST$ENUM$DISR". This element | |
9118 | held the discriminant. | |
9119 | ||
9120 | These versions of Rust also implemented the "non-zero" | |
9121 | optimization. When the enum had two values, and one is empty and | |
9122 | the other holds a pointer that cannot be zero, the pointer is used | |
9123 | as the discriminant, with a zero value meaning the empty variant. | |
9124 | Here, the union's first member is of the form | |
9125 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9126 | where the fieldnos are the indices of the fields that should be | |
9127 | traversed in order to find the field (which may be several fields deep) | |
9128 | and the variantname is the name of the variant of the case when the | |
9129 | field is zero. | |
9130 | ||
9131 | This function recognizes whether TYPE is of one of these forms, | |
9132 | and, if so, smashes it to be a variant type. */ | |
9133 | ||
9134 | static void | |
9135 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9136 | { | |
9137 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
9138 | ||
9139 | /* We don't need to deal with empty enums. */ | |
9140 | if (TYPE_NFIELDS (type) == 0) | |
9141 | return; | |
9142 | ||
9143 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
9144 | if (TYPE_NFIELDS (type) == 1 | |
9145 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) | |
9146 | { | |
9147 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9148 | ||
9149 | /* Decode the field name to find the offset of the | |
9150 | discriminant. */ | |
9151 | ULONGEST bit_offset = 0; | |
9152 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); | |
9153 | while (name[0] >= '0' && name[0] <= '9') | |
9154 | { | |
9155 | char *tail; | |
9156 | unsigned long index = strtoul (name, &tail, 10); | |
9157 | name = tail; | |
9158 | if (*name != '$' | |
9159 | || index >= TYPE_NFIELDS (field_type) | |
9160 | || (TYPE_FIELD_LOC_KIND (field_type, index) | |
9161 | != FIELD_LOC_KIND_BITPOS)) | |
9162 | { | |
b98664d3 | 9163 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9164 | "[in module %s]"), |
9165 | TYPE_FIELD_NAME (type, 0), | |
9166 | objfile_name (objfile)); | |
9167 | return; | |
9168 | } | |
9169 | ++name; | |
9170 | ||
9171 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
9172 | field_type = TYPE_FIELD_TYPE (field_type, index); | |
9173 | } | |
9174 | ||
9175 | /* Make a union to hold the variants. */ | |
9176 | struct type *union_type = alloc_type (objfile); | |
9177 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9178 | TYPE_NFIELDS (union_type) = 3; | |
9179 | TYPE_FIELDS (union_type) | |
9180 | = (struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field)); | |
9181 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9182 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9183 | |
9184 | /* Put the discriminant must at index 0. */ | |
9185 | TYPE_FIELD_TYPE (union_type, 0) = field_type; | |
9186 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
9187 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
9188 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 0), bit_offset); | |
9189 | ||
9190 | /* The order of fields doesn't really matter, so put the real | |
9191 | field at index 1 and the data-less field at index 2. */ | |
9192 | struct discriminant_info *disc | |
9193 | = alloc_discriminant_info (union_type, 0, 1); | |
9194 | TYPE_FIELD (union_type, 1) = TYPE_FIELD (type, 0); | |
9195 | TYPE_FIELD_NAME (union_type, 1) | |
9196 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1))); | |
9197 | TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1)) | |
9198 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
9199 | TYPE_FIELD_NAME (union_type, 1)); | |
9200 | ||
9201 | const char *dataless_name | |
9202 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
9203 | name); | |
9204 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9205 | dataless_name); | |
9206 | TYPE_FIELD_TYPE (union_type, 2) = dataless_type; | |
9207 | /* NAME points into the original discriminant name, which | |
9208 | already has the correct lifetime. */ | |
9209 | TYPE_FIELD_NAME (union_type, 2) = name; | |
9210 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 2), 0); | |
9211 | disc->discriminants[2] = 0; | |
9212 | ||
9213 | /* Smash this type to be a structure type. We have to do this | |
9214 | because the type has already been recorded. */ | |
9215 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9216 | TYPE_NFIELDS (type) = 1; | |
9217 | TYPE_FIELDS (type) | |
9218 | = (struct field *) TYPE_ZALLOC (type, sizeof (struct field)); | |
9219 | ||
9220 | /* Install the variant part. */ | |
9221 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
9222 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
9223 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
9224 | } | |
77c2dba3 TT |
9225 | /* A union with a single anonymous field is probably an old-style |
9226 | univariant enum. */ | |
9227 | else if (TYPE_NFIELDS (type) == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) | |
c9317f21 | 9228 | { |
c9317f21 TT |
9229 | /* Smash this type to be a structure type. We have to do this |
9230 | because the type has already been recorded. */ | |
9231 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9232 | ||
9233 | /* Make a union to hold the variants. */ | |
9234 | struct type *union_type = alloc_type (objfile); | |
9235 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9236 | TYPE_NFIELDS (union_type) = TYPE_NFIELDS (type); | |
9237 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9238 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9239 | TYPE_FIELDS (union_type) = TYPE_FIELDS (type); |
9240 | ||
9241 | struct type *field_type = TYPE_FIELD_TYPE (union_type, 0); | |
9242 | const char *variant_name | |
9243 | = rust_last_path_segment (TYPE_NAME (field_type)); | |
9244 | TYPE_FIELD_NAME (union_type, 0) = variant_name; | |
9245 | TYPE_NAME (field_type) | |
9246 | = rust_fully_qualify (&objfile->objfile_obstack, | |
c7b15a66 | 9247 | TYPE_NAME (type), variant_name); |
c9317f21 TT |
9248 | |
9249 | /* Install the union in the outer struct type. */ | |
9250 | TYPE_NFIELDS (type) = 1; | |
9251 | TYPE_FIELDS (type) | |
9252 | = (struct field *) TYPE_ZALLOC (union_type, sizeof (struct field)); | |
9253 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
9254 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
9255 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
9256 | ||
9257 | alloc_discriminant_info (union_type, -1, 0); | |
9258 | } | |
9259 | else | |
9260 | { | |
9261 | struct type *disr_type = nullptr; | |
9262 | for (int i = 0; i < TYPE_NFIELDS (type); ++i) | |
9263 | { | |
9264 | disr_type = TYPE_FIELD_TYPE (type, i); | |
9265 | ||
a037790e TT |
9266 | if (TYPE_CODE (disr_type) != TYPE_CODE_STRUCT) |
9267 | { | |
9268 | /* All fields of a true enum will be structs. */ | |
9269 | return; | |
9270 | } | |
9271 | else if (TYPE_NFIELDS (disr_type) == 0) | |
c9317f21 TT |
9272 | { |
9273 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9274 | disr_type = nullptr; |
c9317f21 TT |
9275 | } |
9276 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9277 | "RUST$ENUM$DISR") != 0) | |
9278 | { | |
9279 | /* Not a Rust enum. */ | |
9280 | return; | |
9281 | } | |
9282 | else | |
9283 | { | |
9284 | /* Found one. */ | |
9285 | break; | |
9286 | } | |
9287 | } | |
9288 | ||
9289 | /* If we got here without a discriminant, then it's probably | |
9290 | just a union. */ | |
9291 | if (disr_type == nullptr) | |
9292 | return; | |
9293 | ||
9294 | /* Smash this type to be a structure type. We have to do this | |
9295 | because the type has already been recorded. */ | |
9296 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9297 | ||
9298 | /* Make a union to hold the variants. */ | |
9299 | struct field *disr_field = &TYPE_FIELD (disr_type, 0); | |
9300 | struct type *union_type = alloc_type (objfile); | |
9301 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9302 | TYPE_NFIELDS (union_type) = 1 + TYPE_NFIELDS (type); | |
9303 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9304 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9305 | TYPE_FIELDS (union_type) |
9306 | = (struct field *) TYPE_ZALLOC (union_type, | |
9307 | (TYPE_NFIELDS (union_type) | |
9308 | * sizeof (struct field))); | |
9309 | ||
9310 | memcpy (TYPE_FIELDS (union_type) + 1, TYPE_FIELDS (type), | |
9311 | TYPE_NFIELDS (type) * sizeof (struct field)); | |
9312 | ||
9313 | /* Install the discriminant at index 0 in the union. */ | |
9314 | TYPE_FIELD (union_type, 0) = *disr_field; | |
9315 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
9316 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
9317 | ||
9318 | /* Install the union in the outer struct type. */ | |
9319 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
9320 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
9321 | TYPE_NFIELDS (type) = 1; | |
9322 | ||
9323 | /* Set the size and offset of the union type. */ | |
9324 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
9325 | ||
9326 | /* We need a way to find the correct discriminant given a | |
9327 | variant name. For convenience we build a map here. */ | |
9328 | struct type *enum_type = FIELD_TYPE (*disr_field); | |
9329 | std::unordered_map<std::string, ULONGEST> discriminant_map; | |
9330 | for (int i = 0; i < TYPE_NFIELDS (enum_type); ++i) | |
9331 | { | |
9332 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9333 | { | |
9334 | const char *name | |
9335 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9336 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9337 | } | |
9338 | } | |
9339 | ||
9340 | int n_fields = TYPE_NFIELDS (union_type); | |
9341 | struct discriminant_info *disc | |
9342 | = alloc_discriminant_info (union_type, 0, -1); | |
9343 | /* Skip the discriminant here. */ | |
9344 | for (int i = 1; i < n_fields; ++i) | |
9345 | { | |
9346 | /* Find the final word in the name of this variant's type. | |
9347 | That name can be used to look up the correct | |
9348 | discriminant. */ | |
9349 | const char *variant_name | |
9350 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, | |
9351 | i))); | |
9352 | ||
9353 | auto iter = discriminant_map.find (variant_name); | |
9354 | if (iter != discriminant_map.end ()) | |
9355 | disc->discriminants[i] = iter->second; | |
9356 | ||
bedda9ac | 9357 | /* Remove the discriminant field, if it exists. */ |
c9317f21 | 9358 | struct type *sub_type = TYPE_FIELD_TYPE (union_type, i); |
bedda9ac TT |
9359 | if (TYPE_NFIELDS (sub_type) > 0) |
9360 | { | |
9361 | --TYPE_NFIELDS (sub_type); | |
9362 | ++TYPE_FIELDS (sub_type); | |
9363 | } | |
c9317f21 TT |
9364 | TYPE_FIELD_NAME (union_type, i) = variant_name; |
9365 | TYPE_NAME (sub_type) | |
9366 | = rust_fully_qualify (&objfile->objfile_obstack, | |
9367 | TYPE_NAME (type), variant_name); | |
9368 | } | |
9369 | } | |
9370 | } | |
9371 | ||
9372 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9373 | ||
9374 | static void | |
9375 | rust_union_quirks (struct dwarf2_cu *cu) | |
9376 | { | |
9377 | gdb_assert (cu->language == language_rust); | |
52941706 SM |
9378 | for (type *type_ : cu->rust_unions) |
9379 | quirk_rust_enum (type_, cu->per_cu->dwarf2_per_objfile->objfile); | |
2d79090e TT |
9380 | /* We don't need this any more. */ |
9381 | cu->rust_unions.clear (); | |
c9317f21 TT |
9382 | } |
9383 | ||
95554aad TT |
9384 | /* Return the symtab for PER_CU. This works properly regardless of |
9385 | whether we're using the index or psymtabs. */ | |
9386 | ||
43f3e411 DE |
9387 | static struct compunit_symtab * |
9388 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad | 9389 | { |
ed2dc618 | 9390 | return (per_cu->dwarf2_per_objfile->using_index |
43f3e411 DE |
9391 | ? per_cu->v.quick->compunit_symtab |
9392 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
9393 | } |
9394 | ||
9395 | /* A helper function for computing the list of all symbol tables | |
9396 | included by PER_CU. */ | |
9397 | ||
9398 | static void | |
4c39bc03 | 9399 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9400 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 9401 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 9402 | struct compunit_symtab *immediate_parent) |
95554aad TT |
9403 | { |
9404 | void **slot; | |
43f3e411 | 9405 | struct compunit_symtab *cust; |
95554aad TT |
9406 | |
9407 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
9408 | if (*slot != NULL) | |
9409 | { | |
9410 | /* This inclusion and its children have been processed. */ | |
9411 | return; | |
9412 | } | |
9413 | ||
9414 | *slot = per_cu; | |
9415 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
9416 | cust = get_compunit_symtab (per_cu); |
9417 | if (cust != NULL) | |
ec94af83 DE |
9418 | { |
9419 | /* If this is a type unit only add its symbol table if we haven't | |
9420 | seen it yet (type unit per_cu's can share symtabs). */ | |
9421 | if (per_cu->is_debug_types) | |
9422 | { | |
43f3e411 | 9423 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9424 | if (*slot == NULL) |
9425 | { | |
43f3e411 | 9426 | *slot = cust; |
4c39bc03 | 9427 | result->push_back (cust); |
43f3e411 DE |
9428 | if (cust->user == NULL) |
9429 | cust->user = immediate_parent; | |
ec94af83 DE |
9430 | } |
9431 | } | |
9432 | else | |
f9125b6c | 9433 | { |
4c39bc03 | 9434 | result->push_back (cust); |
43f3e411 DE |
9435 | if (cust->user == NULL) |
9436 | cust->user = immediate_parent; | |
f9125b6c | 9437 | } |
ec94af83 | 9438 | } |
95554aad | 9439 | |
ae640021 AB |
9440 | if (!per_cu->imported_symtabs_empty ()) |
9441 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
9442 | { | |
9443 | recursively_compute_inclusions (result, all_children, | |
9444 | all_type_symtabs, ptr, cust); | |
9445 | } | |
95554aad TT |
9446 | } |
9447 | ||
43f3e411 | 9448 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
9449 | PER_CU. */ |
9450 | ||
9451 | static void | |
43f3e411 | 9452 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 9453 | { |
f4dc4d17 DE |
9454 | gdb_assert (! per_cu->is_debug_types); |
9455 | ||
ae640021 | 9456 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 9457 | { |
ae640021 | 9458 | int len; |
4c39bc03 | 9459 | std::vector<compunit_symtab *> result_symtabs; |
ec94af83 | 9460 | htab_t all_children, all_type_symtabs; |
43f3e411 | 9461 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
9462 | |
9463 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 9464 | if (cust == NULL) |
95554aad TT |
9465 | return; |
9466 | ||
9467 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
9468 | NULL, xcalloc, xfree); | |
ec94af83 DE |
9469 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
9470 | NULL, xcalloc, xfree); | |
95554aad | 9471 | |
ae640021 | 9472 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 DE |
9473 | { |
9474 | recursively_compute_inclusions (&result_symtabs, all_children, | |
ae640021 | 9475 | all_type_symtabs, ptr, cust); |
ec94af83 | 9476 | } |
95554aad | 9477 | |
ec94af83 | 9478 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 9479 | len = result_symtabs.size (); |
43f3e411 | 9480 | cust->includes |
ed2dc618 | 9481 | = XOBNEWVEC (&per_cu->dwarf2_per_objfile->objfile->objfile_obstack, |
8d749320 | 9482 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
9483 | memcpy (cust->includes, result_symtabs.data (), |
9484 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 9485 | cust->includes[len] = NULL; |
95554aad | 9486 | |
95554aad | 9487 | htab_delete (all_children); |
ec94af83 | 9488 | htab_delete (all_type_symtabs); |
95554aad TT |
9489 | } |
9490 | } | |
9491 | ||
9492 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
9493 | read. */ | |
9494 | ||
9495 | static void | |
ed2dc618 | 9496 | process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 9497 | { |
71b73764 | 9498 | for (dwarf2_per_cu_data *iter : dwarf2_per_objfile->just_read_cus) |
f4dc4d17 DE |
9499 | { |
9500 | if (! iter->is_debug_types) | |
43f3e411 | 9501 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 9502 | } |
95554aad | 9503 | |
c5d0225d | 9504 | dwarf2_per_objfile->just_read_cus.clear (); |
95554aad TT |
9505 | } |
9506 | ||
9cdd5dbd | 9507 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
9508 | already been loaded into memory. */ |
9509 | ||
9510 | static void | |
95554aad TT |
9511 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
9512 | enum language pretend_language) | |
10b3939b | 9513 | { |
10b3939b | 9514 | struct dwarf2_cu *cu = per_cu->cu; |
ed2dc618 SM |
9515 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9516 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3e29f34a | 9517 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 9518 | CORE_ADDR lowpc, highpc; |
43f3e411 | 9519 | struct compunit_symtab *cust; |
10b3939b | 9520 | CORE_ADDR baseaddr; |
4359dff1 | 9521 | struct block *static_block; |
3e29f34a | 9522 | CORE_ADDR addr; |
10b3939b | 9523 | |
b3b3bada | 9524 | baseaddr = objfile->text_section_offset (); |
10b3939b | 9525 | |
c89b44cd TT |
9526 | /* Clear the list here in case something was left over. */ |
9527 | cu->method_list.clear (); | |
10b3939b | 9528 | |
95554aad TT |
9529 | cu->language = pretend_language; |
9530 | cu->language_defn = language_def (cu->language); | |
9531 | ||
c906108c | 9532 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 9533 | process_die (cu->dies, cu); |
c906108c | 9534 | |
a766d390 DE |
9535 | /* For now fudge the Go package. */ |
9536 | if (cu->language == language_go) | |
9537 | fixup_go_packaging (cu); | |
9538 | ||
5f48f8f3 | 9539 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
9540 | should be complete, and it should now be safe to compute all of the |
9541 | physnames. */ | |
9542 | compute_delayed_physnames (cu); | |
3da10d80 | 9543 | |
c9317f21 TT |
9544 | if (cu->language == language_rust) |
9545 | rust_union_quirks (cu); | |
9546 | ||
fae299cd DC |
9547 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
9548 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
9549 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 9550 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 9551 | |
3e29f34a | 9552 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 9553 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
9554 | |
9555 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
9556 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
9557 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
9558 | addrmap to help ensure it has an accurate map of pc values belonging to | |
9559 | this comp unit. */ | |
9560 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
9561 | ||
c24bdb02 | 9562 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
9563 | SECT_OFF_TEXT (objfile), |
9564 | 0); | |
c906108c | 9565 | |
43f3e411 | 9566 | if (cust != NULL) |
c906108c | 9567 | { |
df15bd07 | 9568 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 9569 | |
8be455d7 JK |
9570 | /* Set symtab language to language from DW_AT_language. If the |
9571 | compilation is from a C file generated by language preprocessors, do | |
9572 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 9573 | if (!(cu->language == language_c |
40e3ad0e | 9574 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 9575 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
9576 | |
9577 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
9578 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
9579 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
9580 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
9581 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
9582 | |
9583 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
9584 | needed, it would be wrong due to missing DW_AT_producer there. | |
9585 | ||
9586 | Still one can confuse GDB by using non-standard GCC compilation | |
9587 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 9588 | */ |
ab260dad | 9589 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 9590 | cust->locations_valid = 1; |
e0d00bc7 JK |
9591 | |
9592 | if (gcc_4_minor >= 5) | |
43f3e411 | 9593 | cust->epilogue_unwind_valid = 1; |
96408a79 | 9594 | |
43f3e411 | 9595 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 9596 | } |
9291a0cd TT |
9597 | |
9598 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 9599 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
9600 | else |
9601 | { | |
891813be | 9602 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
43f3e411 | 9603 | pst->compunit_symtab = cust; |
6d94535f | 9604 | pst->readin = true; |
9291a0cd | 9605 | } |
c906108c | 9606 | |
95554aad | 9607 | /* Push it for inclusion processing later. */ |
c5d0225d | 9608 | dwarf2_per_objfile->just_read_cus.push_back (per_cu); |
804d2729 TT |
9609 | |
9610 | /* Not needed any more. */ | |
c24bdb02 | 9611 | cu->reset_builder (); |
f4dc4d17 | 9612 | } |
45cfd468 | 9613 | |
f4dc4d17 DE |
9614 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
9615 | already been loaded into memory. */ | |
9616 | ||
9617 | static void | |
9618 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
9619 | enum language pretend_language) | |
9620 | { | |
9621 | struct dwarf2_cu *cu = per_cu->cu; | |
ed2dc618 SM |
9622 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9623 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
43f3e411 | 9624 | struct compunit_symtab *cust; |
0186c6a7 DE |
9625 | struct signatured_type *sig_type; |
9626 | ||
9627 | gdb_assert (per_cu->is_debug_types); | |
9628 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 9629 | |
c89b44cd TT |
9630 | /* Clear the list here in case something was left over. */ |
9631 | cu->method_list.clear (); | |
f4dc4d17 | 9632 | |
f4dc4d17 DE |
9633 | cu->language = pretend_language; |
9634 | cu->language_defn = language_def (cu->language); | |
9635 | ||
9636 | /* The symbol tables are set up in read_type_unit_scope. */ | |
9637 | process_die (cu->dies, cu); | |
9638 | ||
9639 | /* For now fudge the Go package. */ | |
9640 | if (cu->language == language_go) | |
9641 | fixup_go_packaging (cu); | |
9642 | ||
5f48f8f3 | 9643 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
9644 | should be complete, and it should now be safe to compute all of the |
9645 | physnames. */ | |
9646 | compute_delayed_physnames (cu); | |
f4dc4d17 | 9647 | |
c9317f21 TT |
9648 | if (cu->language == language_rust) |
9649 | rust_union_quirks (cu); | |
9650 | ||
f4dc4d17 DE |
9651 | /* TUs share symbol tables. |
9652 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
9653 | of it with end_expandable_symtab. Otherwise, complete the addition of |
9654 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 9655 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 9656 | { |
c24bdb02 KS |
9657 | buildsym_compunit *builder = cu->get_builder (); |
9658 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
43f3e411 | 9659 | sig_type->type_unit_group->compunit_symtab = cust; |
f4dc4d17 | 9660 | |
43f3e411 | 9661 | if (cust != NULL) |
f4dc4d17 DE |
9662 | { |
9663 | /* Set symtab language to language from DW_AT_language. If the | |
9664 | compilation is from a C file generated by language preprocessors, | |
9665 | do not set the language if it was already deduced by | |
9666 | start_subfile. */ | |
43f3e411 DE |
9667 | if (!(cu->language == language_c |
9668 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
9669 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
9670 | } |
9671 | } | |
9672 | else | |
9673 | { | |
c24bdb02 | 9674 | cu->get_builder ()->augment_type_symtab (); |
43f3e411 | 9675 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
9676 | } |
9677 | ||
9678 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 9679 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
9680 | else |
9681 | { | |
891813be | 9682 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
43f3e411 | 9683 | pst->compunit_symtab = cust; |
6d94535f | 9684 | pst->readin = true; |
45cfd468 | 9685 | } |
804d2729 TT |
9686 | |
9687 | /* Not needed any more. */ | |
c24bdb02 | 9688 | cu->reset_builder (); |
c906108c SS |
9689 | } |
9690 | ||
95554aad TT |
9691 | /* Process an imported unit DIE. */ |
9692 | ||
9693 | static void | |
9694 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
9695 | { | |
9696 | struct attribute *attr; | |
9697 | ||
f4dc4d17 DE |
9698 | /* For now we don't handle imported units in type units. */ |
9699 | if (cu->per_cu->is_debug_types) | |
9700 | { | |
9701 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
9702 | " supported in type units [in module %s]"), | |
518817b3 | 9703 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
9704 | } |
9705 | ||
95554aad TT |
9706 | attr = dwarf2_attr (die, DW_AT_import, cu); |
9707 | if (attr != NULL) | |
9708 | { | |
9c541725 PA |
9709 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
9710 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); | |
9711 | dwarf2_per_cu_data *per_cu | |
e3b94546 | 9712 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, |
518817b3 | 9713 | cu->per_cu->dwarf2_per_objfile); |
95554aad | 9714 | |
69d751e3 | 9715 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad | 9716 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 9717 | load_full_comp_unit (per_cu, false, cu->language); |
95554aad | 9718 | |
ae640021 | 9719 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
9720 | } |
9721 | } | |
9722 | ||
4c8aa72d PA |
9723 | /* RAII object that represents a process_die scope: i.e., |
9724 | starts/finishes processing a DIE. */ | |
9725 | class process_die_scope | |
adde2bff | 9726 | { |
4c8aa72d PA |
9727 | public: |
9728 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
9729 | : m_die (die), m_cu (cu) | |
9730 | { | |
9731 | /* We should only be processing DIEs not already in process. */ | |
9732 | gdb_assert (!m_die->in_process); | |
9733 | m_die->in_process = true; | |
9734 | } | |
8c3cb9fa | 9735 | |
4c8aa72d PA |
9736 | ~process_die_scope () |
9737 | { | |
9738 | m_die->in_process = false; | |
9739 | ||
9740 | /* If we're done processing the DIE for the CU that owns the line | |
9741 | header, we don't need the line header anymore. */ | |
9742 | if (m_cu->line_header_die_owner == m_die) | |
9743 | { | |
9744 | delete m_cu->line_header; | |
9745 | m_cu->line_header = NULL; | |
9746 | m_cu->line_header_die_owner = NULL; | |
9747 | } | |
9748 | } | |
9749 | ||
9750 | private: | |
9751 | die_info *m_die; | |
9752 | dwarf2_cu *m_cu; | |
9753 | }; | |
adde2bff | 9754 | |
c906108c SS |
9755 | /* Process a die and its children. */ |
9756 | ||
9757 | static void | |
e7c27a73 | 9758 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9759 | { |
4c8aa72d | 9760 | process_die_scope scope (die, cu); |
adde2bff | 9761 | |
c906108c SS |
9762 | switch (die->tag) |
9763 | { | |
9764 | case DW_TAG_padding: | |
9765 | break; | |
9766 | case DW_TAG_compile_unit: | |
95554aad | 9767 | case DW_TAG_partial_unit: |
e7c27a73 | 9768 | read_file_scope (die, cu); |
c906108c | 9769 | break; |
348e048f DE |
9770 | case DW_TAG_type_unit: |
9771 | read_type_unit_scope (die, cu); | |
9772 | break; | |
c906108c | 9773 | case DW_TAG_subprogram: |
0a4b0913 AB |
9774 | /* Nested subprograms in Fortran get a prefix. */ |
9775 | if (cu->language == language_fortran | |
9776 | && die->parent != NULL | |
9777 | && die->parent->tag == DW_TAG_subprogram) | |
9778 | cu->processing_has_namespace_info = true; | |
9779 | /* Fall through. */ | |
c906108c | 9780 | case DW_TAG_inlined_subroutine: |
edb3359d | 9781 | read_func_scope (die, cu); |
c906108c SS |
9782 | break; |
9783 | case DW_TAG_lexical_block: | |
14898363 L |
9784 | case DW_TAG_try_block: |
9785 | case DW_TAG_catch_block: | |
e7c27a73 | 9786 | read_lexical_block_scope (die, cu); |
c906108c | 9787 | break; |
216f72a1 | 9788 | case DW_TAG_call_site: |
96408a79 SA |
9789 | case DW_TAG_GNU_call_site: |
9790 | read_call_site_scope (die, cu); | |
9791 | break; | |
c906108c | 9792 | case DW_TAG_class_type: |
680b30c7 | 9793 | case DW_TAG_interface_type: |
c906108c SS |
9794 | case DW_TAG_structure_type: |
9795 | case DW_TAG_union_type: | |
134d01f1 | 9796 | process_structure_scope (die, cu); |
c906108c SS |
9797 | break; |
9798 | case DW_TAG_enumeration_type: | |
134d01f1 | 9799 | process_enumeration_scope (die, cu); |
c906108c | 9800 | break; |
134d01f1 | 9801 | |
f792889a DJ |
9802 | /* These dies have a type, but processing them does not create |
9803 | a symbol or recurse to process the children. Therefore we can | |
9804 | read them on-demand through read_type_die. */ | |
c906108c | 9805 | case DW_TAG_subroutine_type: |
72019c9c | 9806 | case DW_TAG_set_type: |
c906108c | 9807 | case DW_TAG_array_type: |
c906108c | 9808 | case DW_TAG_pointer_type: |
c906108c | 9809 | case DW_TAG_ptr_to_member_type: |
c906108c | 9810 | case DW_TAG_reference_type: |
4297a3f0 | 9811 | case DW_TAG_rvalue_reference_type: |
c906108c | 9812 | case DW_TAG_string_type: |
c906108c | 9813 | break; |
134d01f1 | 9814 | |
c906108c | 9815 | case DW_TAG_base_type: |
a02abb62 | 9816 | case DW_TAG_subrange_type: |
cb249c71 | 9817 | case DW_TAG_typedef: |
134d01f1 DJ |
9818 | /* Add a typedef symbol for the type definition, if it has a |
9819 | DW_AT_name. */ | |
f792889a | 9820 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 9821 | break; |
c906108c | 9822 | case DW_TAG_common_block: |
e7c27a73 | 9823 | read_common_block (die, cu); |
c906108c SS |
9824 | break; |
9825 | case DW_TAG_common_inclusion: | |
9826 | break; | |
d9fa45fe | 9827 | case DW_TAG_namespace: |
9068261f | 9828 | cu->processing_has_namespace_info = true; |
e7c27a73 | 9829 | read_namespace (die, cu); |
d9fa45fe | 9830 | break; |
5d7cb8df | 9831 | case DW_TAG_module: |
9068261f | 9832 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
9833 | read_module (die, cu); |
9834 | break; | |
d9fa45fe | 9835 | case DW_TAG_imported_declaration: |
9068261f | 9836 | cu->processing_has_namespace_info = true; |
74921315 KS |
9837 | if (read_namespace_alias (die, cu)) |
9838 | break; | |
86a73007 TT |
9839 | /* The declaration is not a global namespace alias. */ |
9840 | /* Fall through. */ | |
d9fa45fe | 9841 | case DW_TAG_imported_module: |
9068261f | 9842 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
9843 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
9844 | || cu->language != language_fortran)) | |
b98664d3 | 9845 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
9846 | dwarf_tag_name (die->tag)); |
9847 | read_import_statement (die, cu); | |
d9fa45fe | 9848 | break; |
95554aad TT |
9849 | |
9850 | case DW_TAG_imported_unit: | |
9851 | process_imported_unit_die (die, cu); | |
9852 | break; | |
9853 | ||
71a3c369 TT |
9854 | case DW_TAG_variable: |
9855 | read_variable (die, cu); | |
9856 | break; | |
9857 | ||
c906108c | 9858 | default: |
e7c27a73 | 9859 | new_symbol (die, NULL, cu); |
c906108c SS |
9860 | break; |
9861 | } | |
9862 | } | |
ca69b9e6 DE |
9863 | \f |
9864 | /* DWARF name computation. */ | |
c906108c | 9865 | |
94af9270 KS |
9866 | /* A helper function for dwarf2_compute_name which determines whether DIE |
9867 | needs to have the name of the scope prepended to the name listed in the | |
9868 | die. */ | |
9869 | ||
9870 | static int | |
9871 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
9872 | { | |
1c809c68 TT |
9873 | struct attribute *attr; |
9874 | ||
94af9270 KS |
9875 | switch (die->tag) |
9876 | { | |
9877 | case DW_TAG_namespace: | |
9878 | case DW_TAG_typedef: | |
9879 | case DW_TAG_class_type: | |
9880 | case DW_TAG_interface_type: | |
9881 | case DW_TAG_structure_type: | |
9882 | case DW_TAG_union_type: | |
9883 | case DW_TAG_enumeration_type: | |
9884 | case DW_TAG_enumerator: | |
9885 | case DW_TAG_subprogram: | |
08a76f8a | 9886 | case DW_TAG_inlined_subroutine: |
94af9270 | 9887 | case DW_TAG_member: |
74921315 | 9888 | case DW_TAG_imported_declaration: |
94af9270 KS |
9889 | return 1; |
9890 | ||
9891 | case DW_TAG_variable: | |
c2b0a229 | 9892 | case DW_TAG_constant: |
94af9270 KS |
9893 | /* We only need to prefix "globally" visible variables. These include |
9894 | any variable marked with DW_AT_external or any variable that | |
9895 | lives in a namespace. [Variables in anonymous namespaces | |
9896 | require prefixing, but they are not DW_AT_external.] */ | |
9897 | ||
9898 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
9899 | { | |
9900 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 9901 | |
94af9270 KS |
9902 | return die_needs_namespace (die_specification (die, &spec_cu), |
9903 | spec_cu); | |
9904 | } | |
9905 | ||
1c809c68 | 9906 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
9907 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
9908 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
9909 | return 0; |
9910 | /* A variable in a lexical block of some kind does not need a | |
9911 | namespace, even though in C++ such variables may be external | |
9912 | and have a mangled name. */ | |
9913 | if (die->parent->tag == DW_TAG_lexical_block | |
9914 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
9915 | || die->parent->tag == DW_TAG_catch_block |
9916 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
9917 | return 0; |
9918 | return 1; | |
94af9270 KS |
9919 | |
9920 | default: | |
9921 | return 0; | |
9922 | } | |
9923 | } | |
9924 | ||
73b9be8b KS |
9925 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
9926 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
9927 | defined for the given DIE. */ | |
9928 | ||
9929 | static struct attribute * | |
9930 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
9931 | { | |
9932 | struct attribute *attr; | |
9933 | ||
9934 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
9935 | if (attr == NULL) | |
9936 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
9937 | ||
9938 | return attr; | |
9939 | } | |
9940 | ||
9941 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
9942 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
9943 | defined for the given DIE. */ | |
9944 | ||
9945 | static const char * | |
9946 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
9947 | { | |
9948 | const char *linkage_name; | |
9949 | ||
9950 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
9951 | if (linkage_name == NULL) | |
9952 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
9953 | ||
9954 | return linkage_name; | |
9955 | } | |
9956 | ||
94af9270 | 9957 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 9958 | compute the physname for the object, which include a method's: |
9c37b5ae | 9959 | - formal parameters (C++), |
a766d390 | 9960 | - receiver type (Go), |
a766d390 DE |
9961 | |
9962 | The term "physname" is a bit confusing. | |
9963 | For C++, for example, it is the demangled name. | |
9964 | For Go, for example, it's the mangled name. | |
94af9270 | 9965 | |
af6b7be1 JB |
9966 | For Ada, return the DIE's linkage name rather than the fully qualified |
9967 | name. PHYSNAME is ignored.. | |
9968 | ||
94af9270 KS |
9969 | The result is allocated on the objfile_obstack and canonicalized. */ |
9970 | ||
9971 | static const char * | |
15d034d0 TT |
9972 | dwarf2_compute_name (const char *name, |
9973 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
9974 | int physname) |
9975 | { | |
518817b3 | 9976 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
bb5ed363 | 9977 | |
94af9270 KS |
9978 | if (name == NULL) |
9979 | name = dwarf2_name (die, cu); | |
9980 | ||
2ee7123e DE |
9981 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
9982 | but otherwise compute it by typename_concat inside GDB. | |
9983 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 9984 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 9985 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
9986 | will set the demangled name to the result of dwarf2_full_name, and it is |
9987 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
9988 | if (cu->language == language_ada |
9989 | || (cu->language == language_fortran && physname)) | |
9990 | { | |
9991 | /* For Ada unit, we prefer the linkage name over the name, as | |
9992 | the former contains the exported name, which the user expects | |
9993 | to be able to reference. Ideally, we want the user to be able | |
9994 | to reference this entity using either natural or linkage name, | |
9995 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 9996 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 9997 | |
2ee7123e DE |
9998 | if (linkage_name != NULL) |
9999 | return linkage_name; | |
f55ee35c JK |
10000 | } |
10001 | ||
94af9270 KS |
10002 | /* These are the only languages we know how to qualify names in. */ |
10003 | if (name != NULL | |
9c37b5ae | 10004 | && (cu->language == language_cplus |
c44af4eb TT |
10005 | || cu->language == language_fortran || cu->language == language_d |
10006 | || cu->language == language_rust)) | |
94af9270 KS |
10007 | { |
10008 | if (die_needs_namespace (die, cu)) | |
10009 | { | |
0d5cff50 | 10010 | const char *prefix; |
34a68019 | 10011 | const char *canonical_name = NULL; |
94af9270 | 10012 | |
d7e74731 PA |
10013 | string_file buf; |
10014 | ||
94af9270 | 10015 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10016 | if (*prefix != '\0') |
10017 | { | |
43816ebc TT |
10018 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10019 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10020 | |
43816ebc | 10021 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10022 | } |
10023 | else | |
d7e74731 | 10024 | buf.puts (name); |
94af9270 | 10025 | |
98bfdba5 PA |
10026 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10027 | as children with DW_TAG_template_type_param or | |
10028 | DW_TAG_value_type_param. If the latter, add them to the name | |
10029 | here. If the name already has template parameters, then | |
10030 | skip this step; some versions of GCC emit both, and | |
10031 | it is more efficient to use the pre-computed name. | |
10032 | ||
10033 | Something to keep in mind about this process: it is very | |
10034 | unlikely, or in some cases downright impossible, to produce | |
10035 | something that will match the mangled name of a function. | |
10036 | If the definition of the function has the same debug info, | |
10037 | we should be able to match up with it anyway. But fallbacks | |
10038 | using the minimal symbol, for instance to find a method | |
10039 | implemented in a stripped copy of libstdc++, will not work. | |
10040 | If we do not have debug info for the definition, we will have to | |
10041 | match them up some other way. | |
10042 | ||
10043 | When we do name matching there is a related problem with function | |
10044 | templates; two instantiated function templates are allowed to | |
10045 | differ only by their return types, which we do not add here. */ | |
10046 | ||
10047 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10048 | { | |
10049 | struct attribute *attr; | |
10050 | struct die_info *child; | |
10051 | int first = 1; | |
10052 | ||
10053 | die->building_fullname = 1; | |
10054 | ||
10055 | for (child = die->child; child != NULL; child = child->sibling) | |
10056 | { | |
10057 | struct type *type; | |
12df843f | 10058 | LONGEST value; |
d521ce57 | 10059 | const gdb_byte *bytes; |
98bfdba5 PA |
10060 | struct dwarf2_locexpr_baton *baton; |
10061 | struct value *v; | |
10062 | ||
10063 | if (child->tag != DW_TAG_template_type_param | |
10064 | && child->tag != DW_TAG_template_value_param) | |
10065 | continue; | |
10066 | ||
10067 | if (first) | |
10068 | { | |
d7e74731 | 10069 | buf.puts ("<"); |
98bfdba5 PA |
10070 | first = 0; |
10071 | } | |
10072 | else | |
d7e74731 | 10073 | buf.puts (", "); |
98bfdba5 PA |
10074 | |
10075 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10076 | if (attr == NULL) | |
10077 | { | |
b98664d3 | 10078 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10079 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10080 | continue; |
10081 | } | |
10082 | type = die_type (child, cu); | |
10083 | ||
10084 | if (child->tag == DW_TAG_template_type_param) | |
10085 | { | |
c1ec8cea TT |
10086 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10087 | &type_print_raw_options); | |
98bfdba5 PA |
10088 | continue; |
10089 | } | |
10090 | ||
10091 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10092 | if (attr == NULL) | |
10093 | { | |
b98664d3 | 10094 | complaint (_("template parameter missing " |
3e43a32a | 10095 | "DW_AT_const_value")); |
d7e74731 | 10096 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10097 | continue; |
10098 | } | |
10099 | ||
10100 | dwarf2_const_value_attr (attr, type, name, | |
10101 | &cu->comp_unit_obstack, cu, | |
10102 | &value, &bytes, &baton); | |
10103 | ||
10104 | if (TYPE_NOSIGN (type)) | |
10105 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
10106 | changed, this can use value_print instead. */ | |
d7e74731 | 10107 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10108 | else |
10109 | { | |
10110 | struct value_print_options opts; | |
10111 | ||
10112 | if (baton != NULL) | |
10113 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10114 | baton->data, | |
10115 | baton->size, | |
10116 | baton->per_cu); | |
10117 | else if (bytes != NULL) | |
10118 | { | |
10119 | v = allocate_value (type); | |
10120 | memcpy (value_contents_writeable (v), bytes, | |
10121 | TYPE_LENGTH (type)); | |
10122 | } | |
10123 | else | |
10124 | v = value_from_longest (type, value); | |
10125 | ||
3e43a32a MS |
10126 | /* Specify decimal so that we do not depend on |
10127 | the radix. */ | |
98bfdba5 PA |
10128 | get_formatted_print_options (&opts, 'd'); |
10129 | opts.raw = 1; | |
d7e74731 | 10130 | value_print (v, &buf, &opts); |
98bfdba5 | 10131 | release_value (v); |
98bfdba5 PA |
10132 | } |
10133 | } | |
10134 | ||
10135 | die->building_fullname = 0; | |
10136 | ||
10137 | if (!first) | |
10138 | { | |
10139 | /* Close the argument list, with a space if necessary | |
10140 | (nested templates). */ | |
d7e74731 PA |
10141 | if (!buf.empty () && buf.string ().back () == '>') |
10142 | buf.puts (" >"); | |
98bfdba5 | 10143 | else |
d7e74731 | 10144 | buf.puts (">"); |
98bfdba5 PA |
10145 | } |
10146 | } | |
10147 | ||
9c37b5ae | 10148 | /* For C++ methods, append formal parameter type |
94af9270 | 10149 | information, if PHYSNAME. */ |
6e70227d | 10150 | |
94af9270 | 10151 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10152 | && cu->language == language_cplus) |
94af9270 KS |
10153 | { |
10154 | struct type *type = read_type_die (die, cu); | |
10155 | ||
d7e74731 | 10156 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10157 | &type_print_raw_options); |
94af9270 | 10158 | |
9c37b5ae | 10159 | if (cu->language == language_cplus) |
94af9270 | 10160 | { |
60430eff DJ |
10161 | /* Assume that an artificial first parameter is |
10162 | "this", but do not crash if it is not. RealView | |
10163 | marks unnamed (and thus unused) parameters as | |
10164 | artificial; there is no way to differentiate | |
10165 | the two cases. */ | |
94af9270 KS |
10166 | if (TYPE_NFIELDS (type) > 0 |
10167 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 10168 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
10169 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
10170 | 0)))) | |
d7e74731 | 10171 | buf.puts (" const"); |
94af9270 KS |
10172 | } |
10173 | } | |
10174 | ||
d7e74731 | 10175 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10176 | |
10177 | if (cu->language == language_cplus) | |
34a68019 | 10178 | canonical_name |
322a8516 | 10179 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
34a68019 TT |
10180 | &objfile->per_bfd->storage_obstack); |
10181 | ||
10182 | /* If we only computed INTERMEDIATE_NAME, or if | |
10183 | INTERMEDIATE_NAME is already canonical, then we need to | |
10184 | copy it to the appropriate obstack. */ | |
322a8516 | 10185 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
efba19b0 TT |
10186 | name = obstack_strdup (&objfile->per_bfd->storage_obstack, |
10187 | intermediate_name); | |
34a68019 TT |
10188 | else |
10189 | name = canonical_name; | |
94af9270 KS |
10190 | } |
10191 | } | |
10192 | ||
10193 | return name; | |
10194 | } | |
10195 | ||
0114d602 DJ |
10196 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10197 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10198 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10199 | not have a name. NAME may either be from a previous call to |
10200 | dwarf2_name or NULL. | |
10201 | ||
9c37b5ae | 10202 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10203 | |
10204 | static const char * | |
15d034d0 | 10205 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10206 | { |
94af9270 KS |
10207 | return dwarf2_compute_name (name, die, cu, 0); |
10208 | } | |
0114d602 | 10209 | |
94af9270 KS |
10210 | /* Construct a physname for the given DIE in CU. NAME may either be |
10211 | from a previous call to dwarf2_name or NULL. The result will be | |
10212 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10213 | name. | |
0114d602 | 10214 | |
9c37b5ae | 10215 | The output string will be canonicalized (if C++). */ |
0114d602 | 10216 | |
94af9270 | 10217 | static const char * |
15d034d0 | 10218 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10219 | { |
518817b3 | 10220 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
900e11f9 | 10221 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10222 | int need_copy = 1; |
10223 | ||
10224 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10225 | on its own. */ | |
10226 | if (!die_needs_namespace (die, cu)) | |
10227 | return dwarf2_compute_name (name, die, cu, 1); | |
10228 | ||
73b9be8b | 10229 | mangled = dw2_linkage_name (die, cu); |
900e11f9 | 10230 | |
e98c9e7c TT |
10231 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10232 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10233 | if (cu->language == language_rust && mangled != NULL | |
10234 | && strchr (mangled, '{') != NULL) | |
10235 | mangled = NULL; | |
10236 | ||
900e11f9 JK |
10237 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB |
10238 | has computed. */ | |
791afaa2 | 10239 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10240 | if (mangled != NULL) |
900e11f9 | 10241 | { |
900e11f9 | 10242 | |
59cc4834 JB |
10243 | if (language_def (cu->language)->la_store_sym_names_in_linkage_form_p) |
10244 | { | |
10245 | /* Do nothing (do not demangle the symbol name). */ | |
10246 | } | |
10247 | else if (cu->language == language_go) | |
a766d390 | 10248 | { |
5e2db402 TT |
10249 | /* This is a lie, but we already lie to the caller new_symbol. |
10250 | new_symbol assumes we return the mangled name. | |
a766d390 | 10251 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
10252 | } |
10253 | else | |
10254 | { | |
0eb876f5 JB |
10255 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10256 | their return type. It is easier for GDB users to search | |
10257 | for such functions as `name(params)' than `long name(params)'. | |
10258 | In such case the minimal symbol names do not match the full | |
10259 | symbol names but for template functions there is never a need | |
10260 | to look up their definition from their declaration so | |
10261 | the only disadvantage remains the minimal symbol variant | |
10262 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10263 | demangled.reset (gdb_demangle (mangled, |
10264 | (DMGL_PARAMS | DMGL_ANSI | |
10265 | | DMGL_RET_DROP))); | |
a766d390 | 10266 | } |
900e11f9 | 10267 | if (demangled) |
791afaa2 | 10268 | canon = demangled.get (); |
900e11f9 JK |
10269 | else |
10270 | { | |
10271 | canon = mangled; | |
10272 | need_copy = 0; | |
10273 | } | |
10274 | } | |
10275 | ||
10276 | if (canon == NULL || check_physname) | |
10277 | { | |
10278 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10279 | ||
10280 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10281 | { | |
10282 | /* It may not mean a bug in GDB. The compiler could also | |
10283 | compute DW_AT_linkage_name incorrectly. But in such case | |
10284 | GDB would need to be bug-to-bug compatible. */ | |
10285 | ||
b98664d3 | 10286 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10287 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10288 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10289 | objfile_name (objfile)); |
900e11f9 JK |
10290 | |
10291 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10292 | is available here - over computed PHYSNAME. It is safer | |
10293 | against both buggy GDB and buggy compilers. */ | |
10294 | ||
10295 | retval = canon; | |
10296 | } | |
10297 | else | |
10298 | { | |
10299 | retval = physname; | |
10300 | need_copy = 0; | |
10301 | } | |
10302 | } | |
10303 | else | |
10304 | retval = canon; | |
10305 | ||
10306 | if (need_copy) | |
021887d8 | 10307 | retval = obstack_strdup (&objfile->per_bfd->storage_obstack, retval); |
900e11f9 | 10308 | |
900e11f9 | 10309 | return retval; |
0114d602 DJ |
10310 | } |
10311 | ||
74921315 KS |
10312 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10313 | a new symbol for it. | |
10314 | ||
10315 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10316 | ||
10317 | static int | |
10318 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10319 | { | |
10320 | struct attribute *attr; | |
10321 | ||
10322 | /* If the die does not have a name, this is not a namespace | |
10323 | alias. */ | |
10324 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10325 | if (attr != NULL) | |
10326 | { | |
10327 | int num; | |
10328 | struct die_info *d = die; | |
10329 | struct dwarf2_cu *imported_cu = cu; | |
10330 | ||
10331 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10332 | keep inspecting DIEs until we hit the underlying import. */ | |
10333 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10334 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10335 | { | |
10336 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10337 | if (attr == NULL) | |
10338 | break; | |
10339 | ||
10340 | d = follow_die_ref (d, attr, &imported_cu); | |
10341 | if (d->tag != DW_TAG_imported_declaration) | |
10342 | break; | |
10343 | } | |
10344 | ||
10345 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10346 | { | |
b98664d3 | 10347 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10348 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10349 | return 0; |
10350 | } | |
10351 | ||
10352 | if (attr != NULL) | |
10353 | { | |
10354 | struct type *type; | |
9c541725 | 10355 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
74921315 | 10356 | |
9c541725 | 10357 | type = get_die_type_at_offset (sect_off, cu->per_cu); |
74921315 KS |
10358 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
10359 | { | |
10360 | /* This declaration is a global namespace alias. Add | |
10361 | a symbol for it whose type is the aliased namespace. */ | |
10362 | new_symbol (die, type, cu); | |
10363 | return 1; | |
10364 | } | |
10365 | } | |
10366 | } | |
10367 | ||
10368 | return 0; | |
10369 | } | |
10370 | ||
22cee43f | 10371 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10372 | current context for CU. |
22cee43f PMR |
10373 | |
10374 | For Ada, imported declarations can materialize renamings, which *may* be | |
10375 | global. However it is impossible (for now?) in DWARF to distinguish | |
10376 | "external" imported declarations and "static" ones. As all imported | |
10377 | declarations seem to be static in all other languages, make them all CU-wide | |
10378 | global only in Ada. */ | |
10379 | ||
10380 | static struct using_direct ** | |
804d2729 | 10381 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10382 | { |
c24bdb02 KS |
10383 | if (cu->language == language_ada |
10384 | && cu->get_builder ()->outermost_context_p ()) | |
10385 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10386 | else |
c24bdb02 | 10387 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10388 | } |
10389 | ||
27aa8d6a SW |
10390 | /* Read the import statement specified by the given die and record it. */ |
10391 | ||
10392 | static void | |
10393 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10394 | { | |
518817b3 | 10395 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
27aa8d6a | 10396 | struct attribute *import_attr; |
32019081 | 10397 | struct die_info *imported_die, *child_die; |
de4affc9 | 10398 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10399 | const char *imported_name; |
794684b6 | 10400 | const char *imported_name_prefix; |
13387711 SW |
10401 | const char *canonical_name; |
10402 | const char *import_alias; | |
10403 | const char *imported_declaration = NULL; | |
794684b6 | 10404 | const char *import_prefix; |
eb1e02fd | 10405 | std::vector<const char *> excludes; |
13387711 | 10406 | |
27aa8d6a SW |
10407 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10408 | if (import_attr == NULL) | |
10409 | { | |
b98664d3 | 10410 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10411 | dwarf_tag_name (die->tag)); |
10412 | return; | |
10413 | } | |
10414 | ||
de4affc9 CC |
10415 | imported_cu = cu; |
10416 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10417 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10418 | if (imported_name == NULL) |
10419 | { | |
10420 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10421 | ||
10422 | The import in the following code: | |
10423 | namespace A | |
10424 | { | |
10425 | typedef int B; | |
10426 | } | |
10427 | ||
10428 | int main () | |
10429 | { | |
10430 | using A::B; | |
10431 | B b; | |
10432 | return b; | |
10433 | } | |
10434 | ||
10435 | ... | |
10436 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
10437 | <52> DW_AT_decl_file : 1 | |
10438 | <53> DW_AT_decl_line : 6 | |
10439 | <54> DW_AT_import : <0x75> | |
10440 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
10441 | <59> DW_AT_name : B | |
10442 | <5b> DW_AT_decl_file : 1 | |
10443 | <5c> DW_AT_decl_line : 2 | |
10444 | <5d> DW_AT_type : <0x6e> | |
10445 | ... | |
10446 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
10447 | <76> DW_AT_byte_size : 4 | |
10448 | <77> DW_AT_encoding : 5 (signed) | |
10449 | ||
10450 | imports the wrong die ( 0x75 instead of 0x58 ). | |
10451 | This case will be ignored until the gcc bug is fixed. */ | |
10452 | return; | |
10453 | } | |
10454 | ||
82856980 SW |
10455 | /* Figure out the local name after import. */ |
10456 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 10457 | |
794684b6 SW |
10458 | /* Figure out where the statement is being imported to. */ |
10459 | import_prefix = determine_prefix (die, cu); | |
10460 | ||
10461 | /* Figure out what the scope of the imported die is and prepend it | |
10462 | to the name of the imported die. */ | |
de4affc9 | 10463 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 10464 | |
f55ee35c JK |
10465 | if (imported_die->tag != DW_TAG_namespace |
10466 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 10467 | { |
13387711 SW |
10468 | imported_declaration = imported_name; |
10469 | canonical_name = imported_name_prefix; | |
794684b6 | 10470 | } |
13387711 | 10471 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 10472 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
10473 | imported_name_prefix, |
10474 | (cu->language == language_d ? "." : "::"), | |
10475 | imported_name, (char *) NULL); | |
13387711 SW |
10476 | else |
10477 | canonical_name = imported_name; | |
794684b6 | 10478 | |
32019081 JK |
10479 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
10480 | for (child_die = die->child; child_die && child_die->tag; | |
10481 | child_die = sibling_die (child_die)) | |
10482 | { | |
10483 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
10484 | represented by an imported module entry with an import attribute | |
10485 | referring to the module and owned entries corresponding to those | |
10486 | entities that are renamed as part of being imported. */ | |
10487 | ||
10488 | if (child_die->tag != DW_TAG_imported_declaration) | |
10489 | { | |
b98664d3 | 10490 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
10491 | "- DIE at %s [in module %s]"), |
10492 | sect_offset_str (child_die->sect_off), | |
10493 | objfile_name (objfile)); | |
32019081 JK |
10494 | continue; |
10495 | } | |
10496 | ||
10497 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
10498 | if (import_attr == NULL) | |
10499 | { | |
b98664d3 | 10500 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
10501 | dwarf_tag_name (child_die->tag)); |
10502 | continue; | |
10503 | } | |
10504 | ||
10505 | imported_cu = cu; | |
10506 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
10507 | &imported_cu); | |
10508 | imported_name = dwarf2_name (imported_die, imported_cu); | |
10509 | if (imported_name == NULL) | |
10510 | { | |
b98664d3 | 10511 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
10512 | "imported name - DIE at %s [in module %s]"), |
10513 | sect_offset_str (child_die->sect_off), | |
10514 | objfile_name (objfile)); | |
32019081 JK |
10515 | continue; |
10516 | } | |
10517 | ||
eb1e02fd | 10518 | excludes.push_back (imported_name); |
32019081 JK |
10519 | |
10520 | process_die (child_die, cu); | |
10521 | } | |
10522 | ||
804d2729 | 10523 | add_using_directive (using_directives (cu), |
22cee43f PMR |
10524 | import_prefix, |
10525 | canonical_name, | |
10526 | import_alias, | |
10527 | imported_declaration, | |
10528 | excludes, | |
10529 | 0, | |
10530 | &objfile->objfile_obstack); | |
27aa8d6a SW |
10531 | } |
10532 | ||
5230b05a WT |
10533 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
10534 | types, but gives them a size of zero. Starting with version 14, | |
10535 | ICC is compatible with GCC. */ | |
10536 | ||
9068261f | 10537 | static bool |
5230b05a WT |
10538 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
10539 | { | |
10540 | if (!cu->checked_producer) | |
10541 | check_producer (cu); | |
10542 | ||
10543 | return cu->producer_is_icc_lt_14; | |
10544 | } | |
10545 | ||
eb77c9df AB |
10546 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
10547 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
10548 | which says that void functions should not have a DW_AT_type. */ | |
10549 | ||
10550 | static bool | |
10551 | producer_is_icc (struct dwarf2_cu *cu) | |
10552 | { | |
10553 | if (!cu->checked_producer) | |
10554 | check_producer (cu); | |
10555 | ||
10556 | return cu->producer_is_icc; | |
10557 | } | |
10558 | ||
1b80a9fa JK |
10559 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
10560 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
10561 | this, it was first present in GCC release 4.3.0. */ | |
10562 | ||
9068261f | 10563 | static bool |
1b80a9fa JK |
10564 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
10565 | { | |
10566 | if (!cu->checked_producer) | |
10567 | check_producer (cu); | |
10568 | ||
10569 | return cu->producer_is_gcc_lt_4_3; | |
10570 | } | |
10571 | ||
d721ba37 PA |
10572 | static file_and_directory |
10573 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 10574 | { |
d721ba37 PA |
10575 | file_and_directory res; |
10576 | ||
9291a0cd TT |
10577 | /* Find the filename. Do not use dwarf2_name here, since the filename |
10578 | is not a source language identifier. */ | |
d721ba37 PA |
10579 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
10580 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 10581 | |
d721ba37 PA |
10582 | if (res.comp_dir == NULL |
10583 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
10584 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 10585 | { |
d721ba37 PA |
10586 | res.comp_dir_storage = ldirname (res.name); |
10587 | if (!res.comp_dir_storage.empty ()) | |
10588 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 10589 | } |
d721ba37 | 10590 | if (res.comp_dir != NULL) |
9291a0cd TT |
10591 | { |
10592 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
10593 | directory, get rid of it. */ | |
d721ba37 | 10594 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 10595 | |
d721ba37 PA |
10596 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
10597 | res.comp_dir = cp + 1; | |
9291a0cd TT |
10598 | } |
10599 | ||
d721ba37 PA |
10600 | if (res.name == NULL) |
10601 | res.name = "<unknown>"; | |
10602 | ||
10603 | return res; | |
9291a0cd TT |
10604 | } |
10605 | ||
f4dc4d17 DE |
10606 | /* Handle DW_AT_stmt_list for a compilation unit. |
10607 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
10608 | COMP_DIR is the compilation directory. LOWPC is passed to |
10609 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
10610 | |
10611 | static void | |
10612 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 10613 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 10614 | { |
518817b3 SM |
10615 | struct dwarf2_per_objfile *dwarf2_per_objfile |
10616 | = cu->per_cu->dwarf2_per_objfile; | |
2ab95328 | 10617 | struct attribute *attr; |
527f3840 JK |
10618 | struct line_header line_header_local; |
10619 | hashval_t line_header_local_hash; | |
527f3840 JK |
10620 | void **slot; |
10621 | int decode_mapping; | |
2ab95328 | 10622 | |
f4dc4d17 DE |
10623 | gdb_assert (! cu->per_cu->is_debug_types); |
10624 | ||
2ab95328 | 10625 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
10626 | if (attr == NULL) |
10627 | return; | |
10628 | ||
9c541725 | 10629 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
10630 | |
10631 | /* The line header hash table is only created if needed (it exists to | |
10632 | prevent redundant reading of the line table for partial_units). | |
10633 | If we're given a partial_unit, we'll need it. If we're given a | |
10634 | compile_unit, then use the line header hash table if it's already | |
10635 | created, but don't create one just yet. */ | |
10636 | ||
10637 | if (dwarf2_per_objfile->line_header_hash == NULL | |
10638 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 10639 | { |
527f3840 | 10640 | dwarf2_per_objfile->line_header_hash |
d15acc42 TT |
10641 | .reset (htab_create_alloc (127, line_header_hash_voidp, |
10642 | line_header_eq_voidp, | |
10643 | free_line_header_voidp, | |
10644 | xcalloc, xfree)); | |
527f3840 | 10645 | } |
2ab95328 | 10646 | |
9c541725 | 10647 | line_header_local.sect_off = line_offset; |
527f3840 JK |
10648 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
10649 | line_header_local_hash = line_header_hash (&line_header_local); | |
10650 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
10651 | { | |
d15acc42 | 10652 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash.get (), |
527f3840 JK |
10653 | &line_header_local, |
10654 | line_header_local_hash, NO_INSERT); | |
10655 | ||
10656 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
10657 | is not present in *SLOT (since if there is something in *SLOT then | |
10658 | it will be for a partial_unit). */ | |
10659 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 10660 | { |
527f3840 | 10661 | gdb_assert (*slot != NULL); |
9a3c8263 | 10662 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 10663 | return; |
dee91e82 | 10664 | } |
2ab95328 | 10665 | } |
527f3840 JK |
10666 | |
10667 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
10668 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
10669 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
10670 | if (lh == NULL) | |
527f3840 | 10671 | return; |
4c8aa72d PA |
10672 | |
10673 | cu->line_header = lh.release (); | |
10674 | cu->line_header_die_owner = die; | |
527f3840 JK |
10675 | |
10676 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
10677 | slot = NULL; | |
10678 | else | |
10679 | { | |
d15acc42 | 10680 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash.get (), |
527f3840 JK |
10681 | &line_header_local, |
10682 | line_header_local_hash, INSERT); | |
10683 | gdb_assert (slot != NULL); | |
10684 | } | |
10685 | if (slot != NULL && *slot == NULL) | |
10686 | { | |
10687 | /* This newly decoded line number information unit will be owned | |
10688 | by line_header_hash hash table. */ | |
10689 | *slot = cu->line_header; | |
4c8aa72d | 10690 | cu->line_header_die_owner = NULL; |
527f3840 JK |
10691 | } |
10692 | else | |
10693 | { | |
10694 | /* We cannot free any current entry in (*slot) as that struct line_header | |
10695 | may be already used by multiple CUs. Create only temporary decoded | |
10696 | line_header for this CU - it may happen at most once for each line | |
10697 | number information unit. And if we're not using line_header_hash | |
10698 | then this is what we want as well. */ | |
10699 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
10700 | } |
10701 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
10702 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
10703 | decode_mapping); | |
fff8551c | 10704 | |
2ab95328 TT |
10705 | } |
10706 | ||
95554aad | 10707 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 10708 | |
c906108c | 10709 | static void |
e7c27a73 | 10710 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10711 | { |
518817b3 SM |
10712 | struct dwarf2_per_objfile *dwarf2_per_objfile |
10713 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 10714 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 10715 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2acceee2 | 10716 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
10717 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
10718 | struct attribute *attr; | |
c906108c | 10719 | struct die_info *child_die; |
e142c38c | 10720 | CORE_ADDR baseaddr; |
6e70227d | 10721 | |
380618d6 | 10722 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 10723 | baseaddr = objfile->text_section_offset (); |
c906108c | 10724 | |
fae299cd | 10725 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
10726 | |
10727 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
10728 | from finish_block. */ | |
2acceee2 | 10729 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 10730 | lowpc = highpc; |
3e29f34a | 10731 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 10732 | |
d721ba37 | 10733 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 10734 | |
f4b8a18d KW |
10735 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
10736 | standardised yet. As a workaround for the language detection we fall | |
10737 | back to the DW_AT_producer string. */ | |
10738 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
10739 | cu->language = language_opencl; | |
10740 | ||
3019eac3 DE |
10741 | /* Similar hack for Go. */ |
10742 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
10743 | set_cu_language (DW_LANG_Go, cu); | |
10744 | ||
c24bdb02 | 10745 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
10746 | |
10747 | /* Decode line number information if present. We do this before | |
10748 | processing child DIEs, so that the line header table is available | |
10749 | for DW_AT_decl_file. */ | |
d721ba37 | 10750 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
10751 | |
10752 | /* Process all dies in compilation unit. */ | |
10753 | if (die->child != NULL) | |
10754 | { | |
10755 | child_die = die->child; | |
10756 | while (child_die && child_die->tag) | |
10757 | { | |
10758 | process_die (child_die, cu); | |
10759 | child_die = sibling_die (child_die); | |
10760 | } | |
10761 | } | |
10762 | ||
10763 | /* Decode macro information, if present. Dwarf 2 macro information | |
10764 | refers to information in the line number info statement program | |
10765 | header, so we can only read it if we've read the header | |
10766 | successfully. */ | |
0af92d60 JK |
10767 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
10768 | if (attr == NULL) | |
10769 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
10770 | if (attr && cu->line_header) |
10771 | { | |
10772 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 10773 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 10774 | |
43f3e411 | 10775 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
10776 | } |
10777 | else | |
10778 | { | |
10779 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
10780 | if (attr && cu->line_header) | |
10781 | { | |
10782 | unsigned int macro_offset = DW_UNSND (attr); | |
10783 | ||
43f3e411 | 10784 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
10785 | } |
10786 | } | |
3019eac3 DE |
10787 | } |
10788 | ||
c24bdb02 KS |
10789 | void |
10790 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 10791 | { |
f4dc4d17 DE |
10792 | struct type_unit_group *tu_group; |
10793 | int first_time; | |
3019eac3 | 10794 | struct attribute *attr; |
9c541725 | 10795 | unsigned int i; |
0186c6a7 | 10796 | struct signatured_type *sig_type; |
3019eac3 | 10797 | |
f4dc4d17 | 10798 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 10799 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 10800 | |
c24bdb02 | 10801 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 10802 | |
f4dc4d17 | 10803 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 10804 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 10805 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 10806 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 10807 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
10808 | |
10809 | /* If we've already processed this stmt_list there's no real need to | |
10810 | do it again, we could fake it and just recreate the part we need | |
10811 | (file name,index -> symtab mapping). If data shows this optimization | |
10812 | is useful we can do it then. */ | |
43f3e411 | 10813 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
10814 | |
10815 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
10816 | debug info. */ | |
fff8551c | 10817 | line_header_up lh; |
f4dc4d17 | 10818 | if (attr != NULL) |
3019eac3 | 10819 | { |
9c541725 | 10820 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
c24bdb02 | 10821 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
10822 | } |
10823 | if (lh == NULL) | |
10824 | { | |
10825 | if (first_time) | |
c24bdb02 | 10826 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
10827 | else |
10828 | { | |
10829 | gdb_assert (tu_group->symtabs == NULL); | |
c24bdb02 | 10830 | gdb_assert (m_builder == nullptr); |
804d2729 | 10831 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
10832 | m_builder.reset (new struct buildsym_compunit |
10833 | (COMPUNIT_OBJFILE (cust), "", | |
10834 | COMPUNIT_DIRNAME (cust), | |
10835 | compunit_language (cust), | |
10836 | 0, cust)); | |
f4dc4d17 | 10837 | } |
f4dc4d17 | 10838 | return; |
3019eac3 DE |
10839 | } |
10840 | ||
c24bdb02 KS |
10841 | line_header = lh.release (); |
10842 | line_header_die_owner = die; | |
3019eac3 | 10843 | |
f4dc4d17 DE |
10844 | if (first_time) |
10845 | { | |
c24bdb02 | 10846 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 10847 | |
1fd60fc0 DE |
10848 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
10849 | still initializing it, and our caller (a few levels up) | |
10850 | process_full_type_unit still needs to know if this is the first | |
10851 | time. */ | |
10852 | ||
4ac93832 TT |
10853 | tu_group->symtabs |
10854 | = XOBNEWVEC (&COMPUNIT_OBJFILE (cust)->objfile_obstack, | |
10855 | struct symtab *, line_header->file_names_size ()); | |
3019eac3 | 10856 | |
7ba99d21 AT |
10857 | auto &file_names = line_header->file_names (); |
10858 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 10859 | { |
7ba99d21 | 10860 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
10861 | dwarf2_start_subfile (this, fe.name, |
10862 | fe.include_dir (line_header)); | |
10863 | buildsym_compunit *b = get_builder (); | |
10864 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 10865 | { |
4c8aa72d PA |
10866 | /* NOTE: start_subfile will recognize when it's been |
10867 | passed a file it has already seen. So we can't | |
10868 | assume there's a simple mapping from | |
10869 | cu->line_header->file_names to subfiles, plus | |
10870 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
10871 | b->get_current_subfile ()->symtab |
10872 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
10873 | } |
10874 | ||
c24bdb02 | 10875 | fe.symtab = b->get_current_subfile ()->symtab; |
8c43009f | 10876 | tu_group->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
10877 | } |
10878 | } | |
10879 | else | |
3019eac3 | 10880 | { |
c24bdb02 | 10881 | gdb_assert (m_builder == nullptr); |
804d2729 | 10882 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
10883 | m_builder.reset (new struct buildsym_compunit |
10884 | (COMPUNIT_OBJFILE (cust), "", | |
10885 | COMPUNIT_DIRNAME (cust), | |
10886 | compunit_language (cust), | |
10887 | 0, cust)); | |
f4dc4d17 | 10888 | |
7ba99d21 AT |
10889 | auto &file_names = line_header->file_names (); |
10890 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 10891 | { |
7ba99d21 | 10892 | file_entry &fe = file_names[i]; |
4c8aa72d | 10893 | fe.symtab = tu_group->symtabs[i]; |
f4dc4d17 | 10894 | } |
3019eac3 DE |
10895 | } |
10896 | ||
f4dc4d17 DE |
10897 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
10898 | so they don't have a "real" (so to speak) symtab anyway. | |
10899 | There is later code that will assign the main symtab to all symbols | |
10900 | that don't have one. We need to handle the case of a symbol with a | |
10901 | missing symtab (DW_AT_decl_file) anyway. */ | |
10902 | } | |
3019eac3 | 10903 | |
f4dc4d17 DE |
10904 | /* Process DW_TAG_type_unit. |
10905 | For TUs we want to skip the first top level sibling if it's not the | |
10906 | actual type being defined by this TU. In this case the first top | |
10907 | level sibling is there to provide context only. */ | |
3019eac3 | 10908 | |
f4dc4d17 DE |
10909 | static void |
10910 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
10911 | { | |
10912 | struct die_info *child_die; | |
3019eac3 | 10913 | |
f4dc4d17 DE |
10914 | prepare_one_comp_unit (cu, die, language_minimal); |
10915 | ||
10916 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
10917 | We do this before processing child DIEs, so that the line header table | |
10918 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 10919 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
10920 | |
10921 | if (die->child != NULL) | |
10922 | { | |
10923 | child_die = die->child; | |
10924 | while (child_die && child_die->tag) | |
10925 | { | |
10926 | process_die (child_die, cu); | |
10927 | child_die = sibling_die (child_die); | |
10928 | } | |
10929 | } | |
3019eac3 DE |
10930 | } |
10931 | \f | |
80626a55 DE |
10932 | /* DWO/DWP files. |
10933 | ||
10934 | http://gcc.gnu.org/wiki/DebugFission | |
10935 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
10936 | ||
10937 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
10938 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
10939 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
10940 | |
10941 | static hashval_t | |
10942 | hash_dwo_file (const void *item) | |
10943 | { | |
9a3c8263 | 10944 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 10945 | hashval_t hash; |
3019eac3 | 10946 | |
a2ce51a0 DE |
10947 | hash = htab_hash_string (dwo_file->dwo_name); |
10948 | if (dwo_file->comp_dir != NULL) | |
10949 | hash += htab_hash_string (dwo_file->comp_dir); | |
10950 | return hash; | |
3019eac3 DE |
10951 | } |
10952 | ||
10953 | static int | |
10954 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
10955 | { | |
9a3c8263 SM |
10956 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
10957 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 10958 | |
a2ce51a0 DE |
10959 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
10960 | return 0; | |
10961 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
10962 | return lhs->comp_dir == rhs->comp_dir; | |
10963 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
10964 | } |
10965 | ||
10966 | /* Allocate a hash table for DWO files. */ | |
10967 | ||
51ac9db5 | 10968 | static htab_up |
298e9637 | 10969 | allocate_dwo_file_hash_table () |
3019eac3 | 10970 | { |
51ac9db5 SM |
10971 | auto delete_dwo_file = [] (void *item) |
10972 | { | |
10973 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
10974 | ||
10975 | delete dwo_file; | |
10976 | }; | |
10977 | ||
bc68fb19 TT |
10978 | return htab_up (htab_create_alloc (41, |
10979 | hash_dwo_file, | |
10980 | eq_dwo_file, | |
10981 | delete_dwo_file, | |
10982 | xcalloc, xfree)); | |
3019eac3 DE |
10983 | } |
10984 | ||
80626a55 DE |
10985 | /* Lookup DWO file DWO_NAME. */ |
10986 | ||
10987 | static void ** | |
ed2dc618 SM |
10988 | lookup_dwo_file_slot (struct dwarf2_per_objfile *dwarf2_per_objfile, |
10989 | const char *dwo_name, | |
10990 | const char *comp_dir) | |
80626a55 DE |
10991 | { |
10992 | struct dwo_file find_entry; | |
10993 | void **slot; | |
10994 | ||
10995 | if (dwarf2_per_objfile->dwo_files == NULL) | |
298e9637 | 10996 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); |
80626a55 | 10997 | |
0ac5b59e DE |
10998 | find_entry.dwo_name = dwo_name; |
10999 | find_entry.comp_dir = comp_dir; | |
51ac9db5 SM |
11000 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files.get (), &find_entry, |
11001 | INSERT); | |
80626a55 DE |
11002 | |
11003 | return slot; | |
11004 | } | |
11005 | ||
3019eac3 DE |
11006 | static hashval_t |
11007 | hash_dwo_unit (const void *item) | |
11008 | { | |
9a3c8263 | 11009 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11010 | |
11011 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11012 | return dwo_unit->signature; | |
11013 | } | |
11014 | ||
11015 | static int | |
11016 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11017 | { | |
9a3c8263 SM |
11018 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11019 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11020 | |
11021 | /* The signature is assumed to be unique within the DWO file. | |
11022 | So while object file CU dwo_id's always have the value zero, | |
11023 | that's OK, assuming each object file DWO file has only one CU, | |
11024 | and that's the rule for now. */ | |
11025 | return lhs->signature == rhs->signature; | |
11026 | } | |
11027 | ||
11028 | /* Allocate a hash table for DWO CUs,TUs. | |
11029 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11030 | ||
b0b6a987 | 11031 | static htab_up |
298e9637 | 11032 | allocate_dwo_unit_table () |
3019eac3 DE |
11033 | { |
11034 | /* Start out with a pretty small number. | |
11035 | Generally DWO files contain only one CU and maybe some TUs. */ | |
b0b6a987 TT |
11036 | return htab_up (htab_create_alloc (3, |
11037 | hash_dwo_unit, | |
11038 | eq_dwo_unit, | |
11039 | NULL, xcalloc, xfree)); | |
3019eac3 DE |
11040 | } |
11041 | ||
19c3d4c9 | 11042 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11043 | |
11044 | static void | |
19c3d4c9 DE |
11045 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11046 | const gdb_byte *info_ptr, | |
11047 | struct die_info *comp_unit_die, | |
c0ab21c2 TT |
11048 | struct dwo_file *dwo_file, |
11049 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11050 | { |
11051 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11052 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11053 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11054 | |
a084a2a6 AT |
11055 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11056 | if (!signature.has_value ()) | |
3019eac3 | 11057 | { |
b98664d3 | 11058 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11059 | " its dwo_id [in module %s]"), |
9d8780f0 | 11060 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11061 | return; |
11062 | } | |
11063 | ||
3019eac3 | 11064 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11065 | dwo_unit->signature = *signature; |
8a0459fd | 11066 | dwo_unit->section = section; |
9c541725 | 11067 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11068 | dwo_unit->length = cu->per_cu->length; |
11069 | ||
b4f54984 | 11070 | if (dwarf_read_debug) |
9d8780f0 SM |
11071 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11072 | sect_offset_str (sect_off), | |
9c541725 | 11073 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11074 | } |
11075 | ||
33c5cd75 | 11076 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11077 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11078 | |
33c5cd75 | 11079 | static void |
ed2dc618 | 11080 | create_cus_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e | 11081 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
b0b6a987 | 11082 | dwarf2_section_info §ion, htab_up &cus_htab) |
3019eac3 DE |
11083 | { |
11084 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
d521ce57 | 11085 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11086 | |
96b79293 | 11087 | section.read (objfile); |
33c5cd75 | 11088 | info_ptr = section.buffer; |
3019eac3 DE |
11089 | |
11090 | if (info_ptr == NULL) | |
33c5cd75 | 11091 | return; |
3019eac3 | 11092 | |
b4f54984 | 11093 | if (dwarf_read_debug) |
19c3d4c9 DE |
11094 | { |
11095 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
96b79293 TT |
11096 | section.get_name (), |
11097 | section.get_file_name ()); | |
19c3d4c9 | 11098 | } |
3019eac3 | 11099 | |
33c5cd75 | 11100 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11101 | while (info_ptr < end_ptr) |
11102 | { | |
11103 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11104 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11105 | struct dwo_unit *dwo_unit; |
11106 | void **slot; | |
11107 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11108 | |
11109 | memset (&per_cu, 0, sizeof (per_cu)); | |
e3b94546 | 11110 | per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
3019eac3 | 11111 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11112 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11113 | per_cu.section = §ion; | |
11114 | ||
c0ab21c2 TT |
11115 | cutu_reader reader (&per_cu, cu, &dwo_file); |
11116 | if (!reader.dummy_p) | |
11117 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3e225074 | 11118 | &dwo_file, &read_unit); |
33c5cd75 DB |
11119 | info_ptr += per_cu.length; |
11120 | ||
11121 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11122 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11123 | continue; |
3019eac3 | 11124 | |
33c5cd75 | 11125 | if (cus_htab == NULL) |
298e9637 | 11126 | cus_htab = allocate_dwo_unit_table (); |
19c3d4c9 | 11127 | |
33c5cd75 | 11128 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); |
c0ab21c2 | 11129 | *dwo_unit = read_unit; |
b0b6a987 | 11130 | slot = htab_find_slot (cus_htab.get (), dwo_unit, INSERT); |
33c5cd75 DB |
11131 | gdb_assert (slot != NULL); |
11132 | if (*slot != NULL) | |
19c3d4c9 | 11133 | { |
33c5cd75 DB |
11134 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11135 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11136 | |
b98664d3 | 11137 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11138 | " the entry at offset %s, signature %s"), |
11139 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11140 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11141 | } |
33c5cd75 | 11142 | *slot = (void *)dwo_unit; |
3019eac3 | 11143 | } |
3019eac3 DE |
11144 | } |
11145 | ||
80626a55 DE |
11146 | /* DWP file .debug_{cu,tu}_index section format: |
11147 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
11148 | ||
d2415c6c DE |
11149 | DWP Version 1: |
11150 | ||
80626a55 DE |
11151 | Both index sections have the same format, and serve to map a 64-bit |
11152 | signature to a set of section numbers. Each section begins with a header, | |
11153 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11154 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11155 | aligned at 8-byte boundaries in the file. | |
11156 | ||
d2415c6c DE |
11157 | The index section header consists of: |
11158 | ||
11159 | V, 32 bit version number | |
11160 | -, 32 bits unused | |
11161 | N, 32 bit number of compilation units or type units in the index | |
11162 | M, 32 bit number of slots in the hash table | |
80626a55 | 11163 | |
d2415c6c | 11164 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11165 | |
d2415c6c DE |
11166 | The hash table begins at offset 16 in the section, and consists of an array |
11167 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11168 | order of the application binary). Unused slots in the hash table are 0. | |
11169 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11170 | |
d2415c6c DE |
11171 | The parallel table begins immediately after the hash table |
11172 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11173 | array of 32-bit indexes (using the byte order of the application binary), | |
11174 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11175 | table contains a 32-bit index into the pool of section numbers. For unused | |
11176 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11177 | |
73869dc2 DE |
11178 | The pool of section numbers begins immediately following the hash table |
11179 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11180 | section numbers consists of an array of 32-bit words (using the byte order | |
11181 | of the application binary). Each item in the array is indexed starting | |
11182 | from 0. The hash table entry provides the index of the first section | |
11183 | number in the set. Additional section numbers in the set follow, and the | |
11184 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11185 | ||
11186 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11187 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11188 | be the second entry. Other members of the set may follow in any order. | |
11189 | ||
11190 | --- | |
11191 | ||
11192 | DWP Version 2: | |
11193 | ||
11194 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
11195 | and the entries in the index tables are now offsets into these sections. | |
11196 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11197 | section. | |
11198 | ||
11199 | Index Section Contents: | |
11200 | Header | |
11201 | Hash Table of Signatures dwp_hash_table.hash_table | |
11202 | Parallel Table of Indices dwp_hash_table.unit_table | |
11203 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
11204 | Table of Section Sizes dwp_hash_table.v2.sizes | |
11205 | ||
11206 | The index section header consists of: | |
11207 | ||
11208 | V, 32 bit version number | |
11209 | L, 32 bit number of columns in the table of section offsets | |
11210 | N, 32 bit number of compilation units or type units in the index | |
11211 | M, 32 bit number of slots in the hash table | |
11212 | ||
11213 | Numbers are recorded using the byte order of the application binary. | |
11214 | ||
11215 | The hash table has the same format as version 1. | |
11216 | The parallel table of indices has the same format as version 1, | |
11217 | except that the entries are origin-1 indices into the table of sections | |
11218 | offsets and the table of section sizes. | |
11219 | ||
11220 | The table of offsets begins immediately following the parallel table | |
11221 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11222 | a two-dimensional array of 32-bit words (using the byte order of the | |
11223 | application binary), with L columns and N+1 rows, in row-major order. | |
11224 | Each row in the array is indexed starting from 0. The first row provides | |
11225 | a key to the remaining rows: each column in this row provides an identifier | |
11226 | for a debug section, and the offsets in the same column of subsequent rows | |
11227 | refer to that section. The section identifiers are: | |
11228 | ||
11229 | DW_SECT_INFO 1 .debug_info.dwo | |
11230 | DW_SECT_TYPES 2 .debug_types.dwo | |
11231 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11232 | DW_SECT_LINE 4 .debug_line.dwo | |
11233 | DW_SECT_LOC 5 .debug_loc.dwo | |
11234 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11235 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11236 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11237 | ||
11238 | The offsets provided by the CU and TU index sections are the base offsets | |
11239 | for the contributions made by each CU or TU to the corresponding section | |
11240 | in the package file. Each CU and TU header contains an abbrev_offset | |
11241 | field, used to find the abbreviations table for that CU or TU within the | |
11242 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11243 | be interpreted as relative to the base offset given in the index section. | |
11244 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11245 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11246 | and offsets into other debug sections obtained from DWARF attributes should | |
11247 | also be interpreted as relative to the corresponding base offset. | |
11248 | ||
11249 | The table of sizes begins immediately following the table of offsets. | |
11250 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11251 | with L columns and N rows, in row-major order. Each row in the array is | |
11252 | indexed starting from 1 (row 0 is shared by the two tables). | |
11253 | ||
11254 | --- | |
11255 | ||
11256 | Hash table lookup is handled the same in version 1 and 2: | |
11257 | ||
11258 | We assume that N and M will not exceed 2^32 - 1. | |
11259 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11260 | ||
d2415c6c DE |
11261 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11262 | in the hash table is located as follows: | |
80626a55 | 11263 | |
d2415c6c DE |
11264 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11265 | the low-order k bits all set to 1. | |
80626a55 | 11266 | |
d2415c6c | 11267 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11268 | |
d2415c6c DE |
11269 | 3) If the hash table entry at index H matches the signature, use that |
11270 | entry. If the hash table entry at index H is unused (all zeroes), | |
11271 | terminate the search: the signature is not present in the table. | |
80626a55 | 11272 | |
d2415c6c | 11273 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11274 | |
d2415c6c | 11275 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11276 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11277 | |
11278 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11279 | .debug_{info,types}.dwo in DWP_FILE. | |
11280 | Returns NULL if there isn't one. | |
11281 | Note: This function processes DWP files only, not DWO files. */ | |
11282 | ||
11283 | static struct dwp_hash_table * | |
ed2dc618 SM |
11284 | create_dwp_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11285 | struct dwp_file *dwp_file, int is_debug_types) | |
80626a55 DE |
11286 | { |
11287 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
400174b1 | 11288 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11289 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11290 | struct dwarf2_section_info *index; |
73869dc2 | 11291 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11292 | struct dwp_hash_table *htab; |
11293 | ||
11294 | if (is_debug_types) | |
11295 | index = &dwp_file->sections.tu_index; | |
11296 | else | |
11297 | index = &dwp_file->sections.cu_index; | |
11298 | ||
96b79293 | 11299 | if (index->empty ()) |
80626a55 | 11300 | return NULL; |
96b79293 | 11301 | index->read (objfile); |
80626a55 DE |
11302 | |
11303 | index_ptr = index->buffer; | |
11304 | index_end = index_ptr + index->size; | |
11305 | ||
11306 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
11307 | index_ptr += 4; |
11308 | if (version == 2) | |
11309 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
11310 | else | |
11311 | nr_columns = 0; | |
11312 | index_ptr += 4; | |
80626a55 DE |
11313 | nr_units = read_4_bytes (dbfd, index_ptr); |
11314 | index_ptr += 4; | |
11315 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11316 | index_ptr += 4; | |
11317 | ||
73869dc2 | 11318 | if (version != 1 && version != 2) |
80626a55 | 11319 | { |
21aa081e | 11320 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11321 | " [in module %s]"), |
21aa081e | 11322 | pulongest (version), dwp_file->name); |
80626a55 DE |
11323 | } |
11324 | if (nr_slots != (nr_slots & -nr_slots)) | |
11325 | { | |
21aa081e | 11326 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11327 | " is not power of 2 [in module %s]"), |
21aa081e | 11328 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11329 | } |
11330 | ||
11331 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
11332 | htab->version = version; |
11333 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11334 | htab->nr_units = nr_units; |
11335 | htab->nr_slots = nr_slots; | |
11336 | htab->hash_table = index_ptr; | |
11337 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11338 | |
11339 | /* Exit early if the table is empty. */ | |
11340 | if (nr_slots == 0 || nr_units == 0 | |
11341 | || (version == 2 && nr_columns == 0)) | |
11342 | { | |
11343 | /* All must be zero. */ | |
11344 | if (nr_slots != 0 || nr_units != 0 | |
11345 | || (version == 2 && nr_columns != 0)) | |
11346 | { | |
b98664d3 | 11347 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11348 | " all zero [in modules %s]"), |
11349 | dwp_file->name); | |
11350 | } | |
11351 | return htab; | |
11352 | } | |
11353 | ||
11354 | if (version == 1) | |
11355 | { | |
11356 | htab->section_pool.v1.indices = | |
11357 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11358 | /* It's harder to decide whether the section is too small in v1. | |
11359 | V1 is deprecated anyway so we punt. */ | |
11360 | } | |
11361 | else | |
11362 | { | |
11363 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11364 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11365 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11366 | /* Reverse map for error checking. */ |
11367 | int ids_seen[DW_SECT_MAX + 1]; | |
11368 | int i; | |
11369 | ||
11370 | if (nr_columns < 2) | |
11371 | { | |
11372 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11373 | " in section table [in module %s]"), | |
11374 | dwp_file->name); | |
11375 | } | |
11376 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11377 | { | |
11378 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11379 | " in section table [in module %s]"), | |
11380 | dwp_file->name); | |
11381 | } | |
04fd5eed GB |
11382 | memset (ids, 255, sizeof_ids); |
11383 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11384 | for (i = 0; i < nr_columns; ++i) |
11385 | { | |
11386 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11387 | ||
11388 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11389 | { | |
11390 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11391 | " in section table [in module %s]"), | |
11392 | id, dwp_file->name); | |
11393 | } | |
11394 | if (ids_seen[id] != -1) | |
11395 | { | |
11396 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11397 | " id %d in section table [in module %s]"), | |
11398 | id, dwp_file->name); | |
11399 | } | |
11400 | ids_seen[id] = i; | |
11401 | ids[i] = id; | |
11402 | } | |
11403 | /* Must have exactly one info or types section. */ | |
11404 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11405 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11406 | != 1) | |
11407 | { | |
11408 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11409 | " DWO info/types section [in module %s]"), | |
11410 | dwp_file->name); | |
11411 | } | |
11412 | /* Must have an abbrev section. */ | |
11413 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
11414 | { | |
11415 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11416 | " section [in module %s]"), | |
11417 | dwp_file->name); | |
11418 | } | |
11419 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11420 | htab->section_pool.v2.sizes = | |
11421 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
11422 | * nr_units * nr_columns); | |
11423 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
11424 | * nr_units * nr_columns)) | |
11425 | > index_end) | |
11426 | { | |
11427 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11428 | " [in module %s]"), | |
11429 | dwp_file->name); | |
11430 | } | |
11431 | } | |
80626a55 DE |
11432 | |
11433 | return htab; | |
11434 | } | |
11435 | ||
11436 | /* Update SECTIONS with the data from SECTP. | |
11437 | ||
11438 | This function is like the other "locate" section routines that are | |
11439 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 11440 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
11441 | |
11442 | The result is non-zero for success, or zero if an error was found. */ | |
11443 | ||
11444 | static int | |
73869dc2 DE |
11445 | locate_v1_virtual_dwo_sections (asection *sectp, |
11446 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
11447 | { |
11448 | const struct dwop_section_names *names = &dwop_section_names; | |
11449 | ||
11450 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
11451 | { | |
11452 | /* There can be only one. */ | |
049412e3 | 11453 | if (sections->abbrev.s.section != NULL) |
80626a55 | 11454 | return 0; |
049412e3 | 11455 | sections->abbrev.s.section = sectp; |
fd361982 | 11456 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
11457 | } |
11458 | else if (section_is_p (sectp->name, &names->info_dwo) | |
11459 | || section_is_p (sectp->name, &names->types_dwo)) | |
11460 | { | |
11461 | /* There can be only one. */ | |
049412e3 | 11462 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 11463 | return 0; |
049412e3 | 11464 | sections->info_or_types.s.section = sectp; |
fd361982 | 11465 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 DE |
11466 | } |
11467 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
11468 | { | |
11469 | /* There can be only one. */ | |
049412e3 | 11470 | if (sections->line.s.section != NULL) |
80626a55 | 11471 | return 0; |
049412e3 | 11472 | sections->line.s.section = sectp; |
fd361982 | 11473 | sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
11474 | } |
11475 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
11476 | { | |
11477 | /* There can be only one. */ | |
049412e3 | 11478 | if (sections->loc.s.section != NULL) |
80626a55 | 11479 | return 0; |
049412e3 | 11480 | sections->loc.s.section = sectp; |
fd361982 | 11481 | sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
11482 | } |
11483 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
11484 | { | |
11485 | /* There can be only one. */ | |
049412e3 | 11486 | if (sections->macinfo.s.section != NULL) |
80626a55 | 11487 | return 0; |
049412e3 | 11488 | sections->macinfo.s.section = sectp; |
fd361982 | 11489 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
11490 | } |
11491 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
11492 | { | |
11493 | /* There can be only one. */ | |
049412e3 | 11494 | if (sections->macro.s.section != NULL) |
80626a55 | 11495 | return 0; |
049412e3 | 11496 | sections->macro.s.section = sectp; |
fd361982 | 11497 | sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
11498 | } |
11499 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
11500 | { | |
11501 | /* There can be only one. */ | |
049412e3 | 11502 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 11503 | return 0; |
049412e3 | 11504 | sections->str_offsets.s.section = sectp; |
fd361982 | 11505 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
11506 | } |
11507 | else | |
11508 | { | |
11509 | /* No other kind of section is valid. */ | |
11510 | return 0; | |
11511 | } | |
11512 | ||
11513 | return 1; | |
11514 | } | |
11515 | ||
73869dc2 DE |
11516 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
11517 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11518 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11519 | This is for DWP version 1 files. */ | |
80626a55 DE |
11520 | |
11521 | static struct dwo_unit * | |
ed2dc618 SM |
11522 | create_dwo_unit_in_dwp_v1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11523 | struct dwp_file *dwp_file, | |
73869dc2 DE |
11524 | uint32_t unit_index, |
11525 | const char *comp_dir, | |
11526 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
11527 | { |
11528 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
11529 | const struct dwp_hash_table *dwp_htab = |
11530 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11531 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
11532 | const char *kind = is_debug_types ? "TU" : "CU"; |
11533 | struct dwo_file *dwo_file; | |
11534 | struct dwo_unit *dwo_unit; | |
73869dc2 | 11535 | struct virtual_v1_dwo_sections sections; |
80626a55 | 11536 | void **dwo_file_slot; |
80626a55 DE |
11537 | int i; |
11538 | ||
73869dc2 DE |
11539 | gdb_assert (dwp_file->version == 1); |
11540 | ||
b4f54984 | 11541 | if (dwarf_read_debug) |
80626a55 | 11542 | { |
73869dc2 | 11543 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 11544 | kind, |
73869dc2 | 11545 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
11546 | dwp_file->name); |
11547 | } | |
11548 | ||
19ac8c2e | 11549 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
11550 | Put a limit on the number of sections we look for so that bad data |
11551 | doesn't cause us to loop forever. */ | |
11552 | ||
73869dc2 | 11553 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
11554 | (1 /* .debug_info or .debug_types */ \ |
11555 | + 1 /* .debug_abbrev */ \ | |
11556 | + 1 /* .debug_line */ \ | |
11557 | + 1 /* .debug_loc */ \ | |
11558 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 11559 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
11560 | + 1 /* trailing zero */) |
11561 | ||
11562 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 11563 | |
73869dc2 | 11564 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
11565 | { |
11566 | asection *sectp; | |
11567 | uint32_t section_nr = | |
11568 | read_4_bytes (dbfd, | |
73869dc2 DE |
11569 | dwp_htab->section_pool.v1.indices |
11570 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
11571 | |
11572 | if (section_nr == 0) | |
11573 | break; | |
11574 | if (section_nr >= dwp_file->num_sections) | |
11575 | { | |
11576 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
11577 | " [in module %s]"), | |
11578 | dwp_file->name); | |
11579 | } | |
11580 | ||
11581 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 11582 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
11583 | { |
11584 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
11585 | " [in module %s]"), | |
11586 | dwp_file->name); | |
11587 | } | |
11588 | } | |
11589 | ||
11590 | if (i < 2 | |
96b79293 TT |
11591 | || sections.info_or_types.empty () |
11592 | || sections.abbrev.empty ()) | |
80626a55 DE |
11593 | { |
11594 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
11595 | " [in module %s]"), | |
11596 | dwp_file->name); | |
11597 | } | |
73869dc2 | 11598 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
11599 | { |
11600 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
11601 | " [in module %s]"), | |
11602 | dwp_file->name); | |
11603 | } | |
11604 | ||
11605 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
11606 | have dwo_unit "live" in that. At least for now. | |
11607 | ||
11608 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 11609 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
11610 | file, we can combine them back into a virtual DWO file to save space |
11611 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
11612 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
11613 | ||
791afaa2 TT |
11614 | std::string virtual_dwo_name = |
11615 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
11616 | sections.abbrev.get_id (), |
11617 | sections.line.get_id (), | |
11618 | sections.loc.get_id (), | |
11619 | sections.str_offsets.get_id ()); | |
80626a55 | 11620 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
11621 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
11622 | virtual_dwo_name.c_str (), | |
11623 | comp_dir); | |
80626a55 DE |
11624 | /* Create one if necessary. */ |
11625 | if (*dwo_file_slot == NULL) | |
11626 | { | |
b4f54984 | 11627 | if (dwarf_read_debug) |
80626a55 DE |
11628 | { |
11629 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 11630 | virtual_dwo_name.c_str ()); |
80626a55 | 11631 | } |
51ac9db5 | 11632 | dwo_file = new struct dwo_file; |
efba19b0 TT |
11633 | dwo_file->dwo_name = obstack_strdup (&objfile->objfile_obstack, |
11634 | virtual_dwo_name); | |
0ac5b59e | 11635 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
11636 | dwo_file->sections.abbrev = sections.abbrev; |
11637 | dwo_file->sections.line = sections.line; | |
11638 | dwo_file->sections.loc = sections.loc; | |
11639 | dwo_file->sections.macinfo = sections.macinfo; | |
11640 | dwo_file->sections.macro = sections.macro; | |
11641 | dwo_file->sections.str_offsets = sections.str_offsets; | |
11642 | /* The "str" section is global to the entire DWP file. */ | |
11643 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 11644 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
11645 | there's no need to record it in dwo_file. |
11646 | Also, we can't simply record type sections in dwo_file because | |
11647 | we record a pointer into the vector in dwo_unit. As we collect more | |
11648 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
11649 | for it, invalidating all copies of pointers into the previous |
11650 | contents. */ | |
80626a55 DE |
11651 | *dwo_file_slot = dwo_file; |
11652 | } | |
11653 | else | |
11654 | { | |
b4f54984 | 11655 | if (dwarf_read_debug) |
80626a55 DE |
11656 | { |
11657 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 11658 | virtual_dwo_name.c_str ()); |
80626a55 | 11659 | } |
9a3c8263 | 11660 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 11661 | } |
80626a55 DE |
11662 | |
11663 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
11664 | dwo_unit->dwo_file = dwo_file; | |
11665 | dwo_unit->signature = signature; | |
8d749320 SM |
11666 | dwo_unit->section = |
11667 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
8a0459fd | 11668 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 11669 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
11670 | |
11671 | return dwo_unit; | |
11672 | } | |
11673 | ||
73869dc2 DE |
11674 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
11675 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
11676 | piece within that section used by a TU/CU, return a virtual section | |
11677 | of just that piece. */ | |
11678 | ||
11679 | static struct dwarf2_section_info | |
ed2dc618 SM |
11680 | create_dwp_v2_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11681 | struct dwarf2_section_info *section, | |
73869dc2 DE |
11682 | bfd_size_type offset, bfd_size_type size) |
11683 | { | |
11684 | struct dwarf2_section_info result; | |
11685 | asection *sectp; | |
11686 | ||
11687 | gdb_assert (section != NULL); | |
11688 | gdb_assert (!section->is_virtual); | |
11689 | ||
11690 | memset (&result, 0, sizeof (result)); | |
11691 | result.s.containing_section = section; | |
dc4ccb6f | 11692 | result.is_virtual = true; |
73869dc2 DE |
11693 | |
11694 | if (size == 0) | |
11695 | return result; | |
11696 | ||
96b79293 | 11697 | sectp = section->get_bfd_section (); |
73869dc2 DE |
11698 | |
11699 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
11700 | bounds of the real section. This is a pretty-rare event, so just | |
11701 | flag an error (easier) instead of a warning and trying to cope. */ | |
11702 | if (sectp == NULL | |
fd361982 | 11703 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 11704 | { |
73869dc2 DE |
11705 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
11706 | " in section %s [in module %s]"), | |
fd361982 | 11707 | sectp ? bfd_section_name (sectp) : "<unknown>", |
73869dc2 DE |
11708 | objfile_name (dwarf2_per_objfile->objfile)); |
11709 | } | |
11710 | ||
11711 | result.virtual_offset = offset; | |
11712 | result.size = size; | |
11713 | return result; | |
11714 | } | |
11715 | ||
11716 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
11717 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11718 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11719 | This is for DWP version 2 files. */ | |
11720 | ||
11721 | static struct dwo_unit * | |
ed2dc618 SM |
11722 | create_dwo_unit_in_dwp_v2 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11723 | struct dwp_file *dwp_file, | |
73869dc2 DE |
11724 | uint32_t unit_index, |
11725 | const char *comp_dir, | |
11726 | ULONGEST signature, int is_debug_types) | |
11727 | { | |
11728 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
11729 | const struct dwp_hash_table *dwp_htab = | |
11730 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11731 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
11732 | const char *kind = is_debug_types ? "TU" : "CU"; |
11733 | struct dwo_file *dwo_file; | |
11734 | struct dwo_unit *dwo_unit; | |
11735 | struct virtual_v2_dwo_sections sections; | |
11736 | void **dwo_file_slot; | |
73869dc2 DE |
11737 | int i; |
11738 | ||
11739 | gdb_assert (dwp_file->version == 2); | |
11740 | ||
b4f54984 | 11741 | if (dwarf_read_debug) |
73869dc2 DE |
11742 | { |
11743 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
11744 | kind, | |
11745 | pulongest (unit_index), hex_string (signature), | |
11746 | dwp_file->name); | |
11747 | } | |
11748 | ||
11749 | /* Fetch the section offsets of this DWO unit. */ | |
11750 | ||
11751 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
11752 | |
11753 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
11754 | { | |
11755 | uint32_t offset = read_4_bytes (dbfd, | |
11756 | dwp_htab->section_pool.v2.offsets | |
11757 | + (((unit_index - 1) * dwp_htab->nr_columns | |
11758 | + i) | |
11759 | * sizeof (uint32_t))); | |
11760 | uint32_t size = read_4_bytes (dbfd, | |
11761 | dwp_htab->section_pool.v2.sizes | |
11762 | + (((unit_index - 1) * dwp_htab->nr_columns | |
11763 | + i) | |
11764 | * sizeof (uint32_t))); | |
11765 | ||
11766 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
11767 | { | |
11768 | case DW_SECT_INFO: | |
11769 | case DW_SECT_TYPES: | |
11770 | sections.info_or_types_offset = offset; | |
11771 | sections.info_or_types_size = size; | |
11772 | break; | |
11773 | case DW_SECT_ABBREV: | |
11774 | sections.abbrev_offset = offset; | |
11775 | sections.abbrev_size = size; | |
11776 | break; | |
11777 | case DW_SECT_LINE: | |
11778 | sections.line_offset = offset; | |
11779 | sections.line_size = size; | |
11780 | break; | |
11781 | case DW_SECT_LOC: | |
11782 | sections.loc_offset = offset; | |
11783 | sections.loc_size = size; | |
11784 | break; | |
11785 | case DW_SECT_STR_OFFSETS: | |
11786 | sections.str_offsets_offset = offset; | |
11787 | sections.str_offsets_size = size; | |
11788 | break; | |
11789 | case DW_SECT_MACINFO: | |
11790 | sections.macinfo_offset = offset; | |
11791 | sections.macinfo_size = size; | |
11792 | break; | |
11793 | case DW_SECT_MACRO: | |
11794 | sections.macro_offset = offset; | |
11795 | sections.macro_size = size; | |
11796 | break; | |
11797 | } | |
11798 | } | |
11799 | ||
11800 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
11801 | have dwo_unit "live" in that. At least for now. | |
11802 | ||
11803 | The DWP file can be made up of a random collection of CUs and TUs. | |
11804 | However, for each CU + set of TUs that came from the same original DWO | |
11805 | file, we can combine them back into a virtual DWO file to save space | |
11806 | (fewer struct dwo_file objects to allocate). Remember that for really | |
11807 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
11808 | ||
791afaa2 TT |
11809 | std::string virtual_dwo_name = |
11810 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
11811 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
11812 | (long) (sections.line_size ? sections.line_offset : 0), | |
11813 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
11814 | (long) (sections.str_offsets_size | |
11815 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 11816 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
11817 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
11818 | virtual_dwo_name.c_str (), | |
11819 | comp_dir); | |
73869dc2 DE |
11820 | /* Create one if necessary. */ |
11821 | if (*dwo_file_slot == NULL) | |
11822 | { | |
b4f54984 | 11823 | if (dwarf_read_debug) |
73869dc2 DE |
11824 | { |
11825 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 11826 | virtual_dwo_name.c_str ()); |
73869dc2 | 11827 | } |
51ac9db5 | 11828 | dwo_file = new struct dwo_file; |
efba19b0 TT |
11829 | dwo_file->dwo_name = obstack_strdup (&objfile->objfile_obstack, |
11830 | virtual_dwo_name); | |
73869dc2 DE |
11831 | dwo_file->comp_dir = comp_dir; |
11832 | dwo_file->sections.abbrev = | |
ed2dc618 | 11833 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
11834 | sections.abbrev_offset, sections.abbrev_size); |
11835 | dwo_file->sections.line = | |
ed2dc618 | 11836 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
11837 | sections.line_offset, sections.line_size); |
11838 | dwo_file->sections.loc = | |
ed2dc618 | 11839 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
11840 | sections.loc_offset, sections.loc_size); |
11841 | dwo_file->sections.macinfo = | |
ed2dc618 | 11842 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
11843 | sections.macinfo_offset, sections.macinfo_size); |
11844 | dwo_file->sections.macro = | |
ed2dc618 | 11845 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
11846 | sections.macro_offset, sections.macro_size); |
11847 | dwo_file->sections.str_offsets = | |
ed2dc618 SM |
11848 | create_dwp_v2_section (dwarf2_per_objfile, |
11849 | &dwp_file->sections.str_offsets, | |
73869dc2 DE |
11850 | sections.str_offsets_offset, |
11851 | sections.str_offsets_size); | |
11852 | /* The "str" section is global to the entire DWP file. */ | |
11853 | dwo_file->sections.str = dwp_file->sections.str; | |
11854 | /* The info or types section is assigned below to dwo_unit, | |
11855 | there's no need to record it in dwo_file. | |
11856 | Also, we can't simply record type sections in dwo_file because | |
11857 | we record a pointer into the vector in dwo_unit. As we collect more | |
11858 | types we'll grow the vector and eventually have to reallocate space | |
11859 | for it, invalidating all copies of pointers into the previous | |
11860 | contents. */ | |
11861 | *dwo_file_slot = dwo_file; | |
11862 | } | |
11863 | else | |
11864 | { | |
b4f54984 | 11865 | if (dwarf_read_debug) |
73869dc2 DE |
11866 | { |
11867 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 11868 | virtual_dwo_name.c_str ()); |
73869dc2 | 11869 | } |
9a3c8263 | 11870 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 11871 | } |
73869dc2 DE |
11872 | |
11873 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
11874 | dwo_unit->dwo_file = dwo_file; | |
11875 | dwo_unit->signature = signature; | |
8d749320 SM |
11876 | dwo_unit->section = |
11877 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
ed2dc618 SM |
11878 | *dwo_unit->section = create_dwp_v2_section (dwarf2_per_objfile, |
11879 | is_debug_types | |
73869dc2 DE |
11880 | ? &dwp_file->sections.types |
11881 | : &dwp_file->sections.info, | |
11882 | sections.info_or_types_offset, | |
11883 | sections.info_or_types_size); | |
11884 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
11885 | ||
11886 | return dwo_unit; | |
11887 | } | |
11888 | ||
57d63ce2 DE |
11889 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
11890 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
11891 | |
11892 | static struct dwo_unit * | |
ed2dc618 SM |
11893 | lookup_dwo_unit_in_dwp (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11894 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 11895 | ULONGEST signature, int is_debug_types) |
80626a55 | 11896 | { |
57d63ce2 DE |
11897 | const struct dwp_hash_table *dwp_htab = |
11898 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11899 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 11900 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
11901 | uint32_t hash = signature & mask; |
11902 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
11903 | unsigned int i; | |
11904 | void **slot; | |
870f88f7 | 11905 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
11906 | |
11907 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
11908 | find_dwo_cu.signature = signature; | |
19ac8c2e | 11909 | slot = htab_find_slot (is_debug_types |
48b490f2 TT |
11910 | ? dwp_file->loaded_tus.get () |
11911 | : dwp_file->loaded_cus.get (), | |
19ac8c2e | 11912 | &find_dwo_cu, INSERT); |
80626a55 DE |
11913 | |
11914 | if (*slot != NULL) | |
9a3c8263 | 11915 | return (struct dwo_unit *) *slot; |
80626a55 DE |
11916 | |
11917 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 11918 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
11919 | { |
11920 | ULONGEST signature_in_table; | |
11921 | ||
11922 | signature_in_table = | |
57d63ce2 | 11923 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
11924 | if (signature_in_table == signature) |
11925 | { | |
57d63ce2 DE |
11926 | uint32_t unit_index = |
11927 | read_4_bytes (dbfd, | |
11928 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 11929 | |
73869dc2 DE |
11930 | if (dwp_file->version == 1) |
11931 | { | |
ed2dc618 SM |
11932 | *slot = create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile, |
11933 | dwp_file, unit_index, | |
73869dc2 DE |
11934 | comp_dir, signature, |
11935 | is_debug_types); | |
11936 | } | |
11937 | else | |
11938 | { | |
ed2dc618 SM |
11939 | *slot = create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile, |
11940 | dwp_file, unit_index, | |
73869dc2 DE |
11941 | comp_dir, signature, |
11942 | is_debug_types); | |
11943 | } | |
9a3c8263 | 11944 | return (struct dwo_unit *) *slot; |
80626a55 DE |
11945 | } |
11946 | if (signature_in_table == 0) | |
11947 | return NULL; | |
11948 | hash = (hash + hash2) & mask; | |
11949 | } | |
11950 | ||
11951 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
11952 | " [in module %s]"), | |
11953 | dwp_file->name); | |
11954 | } | |
11955 | ||
ab5088bf | 11956 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
11957 | Open the file specified by FILE_NAME and hand it off to BFD for |
11958 | preliminary analysis. Return a newly initialized bfd *, which | |
11959 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 11960 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
11961 | SEARCH_CWD is true if the current directory is to be searched. |
11962 | It will be searched before debug-file-directory. | |
13aaf454 DE |
11963 | If successful, the file is added to the bfd include table of the |
11964 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 11965 | If unable to find/open the file, return NULL. |
3019eac3 DE |
11966 | NOTE: This function is derived from symfile_bfd_open. */ |
11967 | ||
192b62ce | 11968 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
11969 | try_open_dwop_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11970 | const char *file_name, int is_dwp, int search_cwd) | |
3019eac3 | 11971 | { |
24b9144d | 11972 | int desc; |
9c02c129 DE |
11973 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
11974 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
11975 | to debug_file_directory. */ | |
e0cc99a6 | 11976 | const char *search_path; |
9c02c129 DE |
11977 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
11978 | ||
e0cc99a6 | 11979 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
11980 | if (search_cwd) |
11981 | { | |
11982 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
11983 | { |
11984 | search_path_holder.reset (concat (".", dirname_separator_string, | |
11985 | debug_file_directory, | |
11986 | (char *) NULL)); | |
11987 | search_path = search_path_holder.get (); | |
11988 | } | |
6ac97d4c | 11989 | else |
e0cc99a6 | 11990 | search_path = "."; |
6ac97d4c | 11991 | } |
9c02c129 | 11992 | else |
e0cc99a6 | 11993 | search_path = debug_file_directory; |
3019eac3 | 11994 | |
24b9144d | 11995 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
11996 | if (is_dwp) |
11997 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
11998 | |
11999 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12000 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12001 | O_RDONLY | O_BINARY, &absolute_name); |
12002 | if (desc < 0) | |
12003 | return NULL; | |
12004 | ||
e0cc99a6 TT |
12005 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12006 | gnutarget, desc)); | |
9c02c129 DE |
12007 | if (sym_bfd == NULL) |
12008 | return NULL; | |
192b62ce | 12009 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12010 | |
192b62ce TT |
12011 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12012 | return NULL; | |
3019eac3 | 12013 | |
13aaf454 DE |
12014 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12015 | This is important because things like demangled_names_hash lives in the | |
12016 | objfile's per_bfd space and may have references to things like symbol | |
12017 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 12018 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12019 | |
3019eac3 DE |
12020 | return sym_bfd; |
12021 | } | |
12022 | ||
ab5088bf | 12023 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12024 | COMP_DIR is the DW_AT_comp_dir attribute. |
12025 | The result is the bfd handle of the file. | |
12026 | If there is a problem finding or opening the file, return NULL. | |
12027 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12028 | same as symfile_bfd_open. */ | |
12029 | ||
192b62ce | 12030 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12031 | open_dwo_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12032 | const char *file_name, const char *comp_dir) | |
3019eac3 | 12033 | { |
80626a55 | 12034 | if (IS_ABSOLUTE_PATH (file_name)) |
ed2dc618 SM |
12035 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12036 | 0 /*is_dwp*/, 0 /*search_cwd*/); | |
3019eac3 DE |
12037 | |
12038 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12039 | ||
12040 | if (comp_dir != NULL) | |
12041 | { | |
43816ebc TT |
12042 | gdb::unique_xmalloc_ptr<char> path_to_try |
12043 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12044 | |
12045 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12046 | search path, which seems useful. */ | |
ed2dc618 | 12047 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, |
43816ebc | 12048 | path_to_try.get (), |
ed2dc618 | 12049 | 0 /*is_dwp*/, |
192b62ce | 12050 | 1 /*search_cwd*/)); |
3019eac3 DE |
12051 | if (abfd != NULL) |
12052 | return abfd; | |
12053 | } | |
12054 | ||
12055 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12056 | is a list of paths. */ | |
12057 | ||
12058 | if (*debug_file_directory == '\0') | |
12059 | return NULL; | |
12060 | ||
ed2dc618 SM |
12061 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12062 | 0 /*is_dwp*/, 1 /*search_cwd*/); | |
3019eac3 DE |
12063 | } |
12064 | ||
80626a55 DE |
12065 | /* This function is mapped across the sections and remembers the offset and |
12066 | size of each of the DWO debugging sections we are interested in. */ | |
12067 | ||
12068 | static void | |
12069 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12070 | { | |
9a3c8263 | 12071 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12072 | const struct dwop_section_names *names = &dwop_section_names; |
12073 | ||
12074 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12075 | { | |
049412e3 | 12076 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12077 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12078 | } |
12079 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12080 | { | |
049412e3 | 12081 | dwo_sections->info.s.section = sectp; |
fd361982 | 12082 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 DE |
12083 | } |
12084 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12085 | { | |
049412e3 | 12086 | dwo_sections->line.s.section = sectp; |
fd361982 | 12087 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12088 | } |
12089 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12090 | { | |
049412e3 | 12091 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12092 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
12093 | } |
12094 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12095 | { | |
049412e3 | 12096 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12097 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12098 | } |
12099 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12100 | { | |
049412e3 | 12101 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12102 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
12103 | } |
12104 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
12105 | { | |
049412e3 | 12106 | dwo_sections->str.s.section = sectp; |
fd361982 | 12107 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 DE |
12108 | } |
12109 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12110 | { | |
049412e3 | 12111 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12112 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12113 | } |
12114 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12115 | { | |
12116 | struct dwarf2_section_info type_section; | |
12117 | ||
12118 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12119 | type_section.s.section = sectp; |
fd361982 | 12120 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12121 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12122 | } |
12123 | } | |
12124 | ||
ab5088bf | 12125 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12126 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12127 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12128 | |
12129 | static struct dwo_file * | |
0ac5b59e DE |
12130 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
12131 | const char *dwo_name, const char *comp_dir) | |
3019eac3 | 12132 | { |
ed2dc618 | 12133 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 12134 | |
fb1eb2f9 | 12135 | gdb_bfd_ref_ptr dbfd = open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12136 | if (dbfd == NULL) |
12137 | { | |
b4f54984 | 12138 | if (dwarf_read_debug) |
80626a55 DE |
12139 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12140 | return NULL; | |
12141 | } | |
263db9a1 | 12142 | |
51ac9db5 | 12143 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12144 | dwo_file->dwo_name = dwo_name; |
12145 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12146 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12147 | |
fb1eb2f9 | 12148 | bfd_map_over_sections (dwo_file->dbfd.get (), dwarf2_locate_dwo_sections, |
192b62ce | 12149 | &dwo_file->sections); |
3019eac3 | 12150 | |
18a8505e AT |
12151 | create_cus_hash_table (dwarf2_per_objfile, per_cu->cu, *dwo_file, |
12152 | dwo_file->sections.info, dwo_file->cus); | |
3019eac3 | 12153 | |
263db9a1 | 12154 | create_debug_types_hash_table (dwarf2_per_objfile, dwo_file.get (), |
ed2dc618 | 12155 | dwo_file->sections.types, dwo_file->tus); |
3019eac3 | 12156 | |
b4f54984 | 12157 | if (dwarf_read_debug) |
80626a55 DE |
12158 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
12159 | ||
263db9a1 | 12160 | return dwo_file.release (); |
3019eac3 DE |
12161 | } |
12162 | ||
80626a55 | 12163 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12164 | size of each of the DWP debugging sections common to version 1 and 2 that |
12165 | we are interested in. */ | |
3019eac3 | 12166 | |
80626a55 | 12167 | static void |
73869dc2 DE |
12168 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
12169 | void *dwp_file_ptr) | |
3019eac3 | 12170 | { |
9a3c8263 | 12171 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
12172 | const struct dwop_section_names *names = &dwop_section_names; |
12173 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12174 | |
80626a55 | 12175 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12176 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12177 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12178 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12179 | |
80626a55 DE |
12180 | /* Look for specific sections that we need. */ |
12181 | if (section_is_p (sectp->name, &names->str_dwo)) | |
12182 | { | |
049412e3 | 12183 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 12184 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 DE |
12185 | } |
12186 | else if (section_is_p (sectp->name, &names->cu_index)) | |
12187 | { | |
049412e3 | 12188 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 12189 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12190 | } |
12191 | else if (section_is_p (sectp->name, &names->tu_index)) | |
12192 | { | |
049412e3 | 12193 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 12194 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12195 | } |
12196 | } | |
3019eac3 | 12197 | |
73869dc2 DE |
12198 | /* This function is mapped across the sections and remembers the offset and |
12199 | size of each of the DWP version 2 debugging sections that we are interested | |
12200 | in. This is split into a separate function because we don't know if we | |
12201 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
12202 | ||
12203 | static void | |
12204 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12205 | { | |
9a3c8263 | 12206 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12207 | const struct dwop_section_names *names = &dwop_section_names; |
12208 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12209 | ||
12210 | /* Record the ELF section number for later lookup: this is what the | |
12211 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12212 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12213 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12214 | ||
12215 | /* Look for specific sections that we need. */ | |
12216 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12217 | { | |
049412e3 | 12218 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 12219 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 DE |
12220 | } |
12221 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12222 | { | |
049412e3 | 12223 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 12224 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 DE |
12225 | } |
12226 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12227 | { | |
049412e3 | 12228 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 12229 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 DE |
12230 | } |
12231 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12232 | { | |
049412e3 | 12233 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 12234 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 DE |
12235 | } |
12236 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12237 | { | |
049412e3 | 12238 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 12239 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 DE |
12240 | } |
12241 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12242 | { | |
049412e3 | 12243 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 12244 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 DE |
12245 | } |
12246 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12247 | { | |
049412e3 | 12248 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 12249 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 DE |
12250 | } |
12251 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12252 | { | |
049412e3 | 12253 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 12254 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
12255 | } |
12256 | } | |
12257 | ||
80626a55 | 12258 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12259 | |
80626a55 DE |
12260 | static hashval_t |
12261 | hash_dwp_loaded_cutus (const void *item) | |
12262 | { | |
9a3c8263 | 12263 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 12264 | |
80626a55 DE |
12265 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
12266 | return dwo_unit->signature; | |
3019eac3 DE |
12267 | } |
12268 | ||
80626a55 | 12269 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12270 | |
80626a55 DE |
12271 | static int |
12272 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 12273 | { |
9a3c8263 SM |
12274 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
12275 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 12276 | |
80626a55 DE |
12277 | return dua->signature == dub->signature; |
12278 | } | |
3019eac3 | 12279 | |
80626a55 | 12280 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12281 | |
48b490f2 | 12282 | static htab_up |
298e9637 | 12283 | allocate_dwp_loaded_cutus_table () |
80626a55 | 12284 | { |
48b490f2 TT |
12285 | return htab_up (htab_create_alloc (3, |
12286 | hash_dwp_loaded_cutus, | |
12287 | eq_dwp_loaded_cutus, | |
12288 | NULL, xcalloc, xfree)); | |
80626a55 | 12289 | } |
3019eac3 | 12290 | |
ab5088bf DE |
12291 | /* Try to open DWP file FILE_NAME. |
12292 | The result is the bfd handle of the file. | |
12293 | If there is a problem finding or opening the file, return NULL. | |
12294 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12295 | same as symfile_bfd_open. */ | |
12296 | ||
192b62ce | 12297 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12298 | open_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12299 | const char *file_name) | |
ab5088bf | 12300 | { |
ed2dc618 SM |
12301 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, file_name, |
12302 | 1 /*is_dwp*/, | |
192b62ce | 12303 | 1 /*search_cwd*/)); |
6ac97d4c DE |
12304 | if (abfd != NULL) |
12305 | return abfd; | |
12306 | ||
12307 | /* Work around upstream bug 15652. | |
12308 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
12309 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
12310 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
12311 | of the executable's path may have discarded the needed info. | |
12312 | [IWBN if the dwp file name was recorded in the executable, akin to | |
12313 | .gnu_debuglink, but that doesn't exist yet.] | |
12314 | Strip the directory from FILE_NAME and search again. */ | |
12315 | if (*debug_file_directory != '\0') | |
12316 | { | |
12317 | /* Don't implicitly search the current directory here. | |
12318 | If the user wants to search "." to handle this case, | |
12319 | it must be added to debug-file-directory. */ | |
ed2dc618 SM |
12320 | return try_open_dwop_file (dwarf2_per_objfile, |
12321 | lbasename (file_name), 1 /*is_dwp*/, | |
6ac97d4c DE |
12322 | 0 /*search_cwd*/); |
12323 | } | |
12324 | ||
12325 | return NULL; | |
ab5088bf DE |
12326 | } |
12327 | ||
80626a55 DE |
12328 | /* Initialize the use of the DWP file for the current objfile. |
12329 | By convention the name of the DWP file is ${objfile}.dwp. | |
12330 | The result is NULL if it can't be found. */ | |
a766d390 | 12331 | |
400174b1 | 12332 | static std::unique_ptr<struct dwp_file> |
ed2dc618 | 12333 | open_and_init_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
80626a55 DE |
12334 | { |
12335 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 | 12336 | |
82bf32bc JK |
12337 | /* Try to find first .dwp for the binary file before any symbolic links |
12338 | resolving. */ | |
6c447423 DE |
12339 | |
12340 | /* If the objfile is a debug file, find the name of the real binary | |
12341 | file and get the name of dwp file from there. */ | |
d721ba37 | 12342 | std::string dwp_name; |
6c447423 DE |
12343 | if (objfile->separate_debug_objfile_backlink != NULL) |
12344 | { | |
12345 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
12346 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 12347 | |
d721ba37 | 12348 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
12349 | } |
12350 | else | |
d721ba37 PA |
12351 | dwp_name = objfile->original_name; |
12352 | ||
12353 | dwp_name += ".dwp"; | |
80626a55 | 12354 | |
ed2dc618 | 12355 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
12356 | if (dbfd == NULL |
12357 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
12358 | { | |
12359 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
12360 | dwp_name = objfile_name (objfile); |
12361 | dwp_name += ".dwp"; | |
ed2dc618 | 12362 | dbfd = open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
12363 | } |
12364 | ||
80626a55 DE |
12365 | if (dbfd == NULL) |
12366 | { | |
b4f54984 | 12367 | if (dwarf_read_debug) |
d721ba37 | 12368 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
400174b1 | 12369 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 12370 | } |
400174b1 TT |
12371 | |
12372 | const char *name = bfd_get_filename (dbfd.get ()); | |
12373 | std::unique_ptr<struct dwp_file> dwp_file | |
12374 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 12375 | |
0a0f4c01 | 12376 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 DE |
12377 | dwp_file->elf_sections = |
12378 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
12379 | dwp_file->num_sections, asection *); | |
12380 | ||
400174b1 TT |
12381 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12382 | dwarf2_locate_common_dwp_sections, | |
12383 | dwp_file.get ()); | |
80626a55 | 12384 | |
400174b1 TT |
12385 | dwp_file->cus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
12386 | 0); | |
80626a55 | 12387 | |
400174b1 TT |
12388 | dwp_file->tus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
12389 | 1); | |
80626a55 | 12390 | |
73869dc2 | 12391 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
12392 | if (dwp_file->cus && dwp_file->tus |
12393 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
12394 | { |
12395 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 12396 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 12397 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
12398 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
12399 | " TU version %s [in DWP file %s]"), | |
12400 | pulongest (dwp_file->cus->version), | |
d721ba37 | 12401 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 12402 | } |
08302ed2 DE |
12403 | |
12404 | if (dwp_file->cus) | |
12405 | dwp_file->version = dwp_file->cus->version; | |
12406 | else if (dwp_file->tus) | |
12407 | dwp_file->version = dwp_file->tus->version; | |
12408 | else | |
12409 | dwp_file->version = 2; | |
73869dc2 DE |
12410 | |
12411 | if (dwp_file->version == 2) | |
400174b1 TT |
12412 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12413 | dwarf2_locate_v2_dwp_sections, | |
12414 | dwp_file.get ()); | |
73869dc2 | 12415 | |
298e9637 SM |
12416 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (); |
12417 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (); | |
80626a55 | 12418 | |
b4f54984 | 12419 | if (dwarf_read_debug) |
80626a55 DE |
12420 | { |
12421 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
12422 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
12423 | " %s CUs, %s TUs\n", |
12424 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
12425 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
12426 | } |
12427 | ||
12428 | return dwp_file; | |
3019eac3 | 12429 | } |
c906108c | 12430 | |
ab5088bf DE |
12431 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
12432 | ||
12433 | static struct dwp_file * | |
ed2dc618 | 12434 | get_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ab5088bf DE |
12435 | { |
12436 | if (! dwarf2_per_objfile->dwp_checked) | |
12437 | { | |
ed2dc618 SM |
12438 | dwarf2_per_objfile->dwp_file |
12439 | = open_and_init_dwp_file (dwarf2_per_objfile); | |
ab5088bf DE |
12440 | dwarf2_per_objfile->dwp_checked = 1; |
12441 | } | |
400174b1 | 12442 | return dwarf2_per_objfile->dwp_file.get (); |
ab5088bf DE |
12443 | } |
12444 | ||
80626a55 DE |
12445 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
12446 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
12447 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 12448 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
12449 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
12450 | ||
12451 | This is called, for example, when wanting to read a variable with a | |
12452 | complex location. Therefore we don't want to do file i/o for every call. | |
12453 | Therefore we don't want to look for a DWO file on every call. | |
12454 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
12455 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
12456 | for a DWO file. | |
12457 | ||
1c658ad5 | 12458 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 12459 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 12460 | |
3019eac3 | 12461 | static struct dwo_unit * |
80626a55 DE |
12462 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
12463 | const char *dwo_name, const char *comp_dir, | |
12464 | ULONGEST signature, int is_debug_types) | |
3019eac3 | 12465 | { |
ed2dc618 | 12466 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_unit->dwarf2_per_objfile; |
3019eac3 | 12467 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 DE |
12468 | const char *kind = is_debug_types ? "TU" : "CU"; |
12469 | void **dwo_file_slot; | |
3019eac3 | 12470 | struct dwo_file *dwo_file; |
80626a55 | 12471 | struct dwp_file *dwp_file; |
cb1df416 | 12472 | |
6a506a2d DE |
12473 | /* First see if there's a DWP file. |
12474 | If we have a DWP file but didn't find the DWO inside it, don't | |
12475 | look for the original DWO file. It makes gdb behave differently | |
12476 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 12477 | |
ed2dc618 | 12478 | dwp_file = get_dwp_file (dwarf2_per_objfile); |
80626a55 | 12479 | if (dwp_file != NULL) |
cf2c3c16 | 12480 | { |
80626a55 DE |
12481 | const struct dwp_hash_table *dwp_htab = |
12482 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12483 | ||
12484 | if (dwp_htab != NULL) | |
12485 | { | |
12486 | struct dwo_unit *dwo_cutu = | |
ed2dc618 | 12487 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, comp_dir, |
57d63ce2 | 12488 | signature, is_debug_types); |
80626a55 DE |
12489 | |
12490 | if (dwo_cutu != NULL) | |
12491 | { | |
b4f54984 | 12492 | if (dwarf_read_debug) |
80626a55 DE |
12493 | { |
12494 | fprintf_unfiltered (gdb_stdlog, | |
12495 | "Virtual DWO %s %s found: @%s\n", | |
12496 | kind, hex_string (signature), | |
12497 | host_address_to_string (dwo_cutu)); | |
12498 | } | |
12499 | return dwo_cutu; | |
12500 | } | |
12501 | } | |
12502 | } | |
6a506a2d | 12503 | else |
80626a55 | 12504 | { |
6a506a2d | 12505 | /* No DWP file, look for the DWO file. */ |
80626a55 | 12506 | |
ed2dc618 SM |
12507 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12508 | dwo_name, comp_dir); | |
6a506a2d | 12509 | if (*dwo_file_slot == NULL) |
80626a55 | 12510 | { |
6a506a2d DE |
12511 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
12512 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 12513 | } |
6a506a2d | 12514 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 12515 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 12516 | |
6a506a2d | 12517 | if (dwo_file != NULL) |
19c3d4c9 | 12518 | { |
6a506a2d DE |
12519 | struct dwo_unit *dwo_cutu = NULL; |
12520 | ||
12521 | if (is_debug_types && dwo_file->tus) | |
12522 | { | |
12523 | struct dwo_unit find_dwo_cutu; | |
12524 | ||
12525 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12526 | find_dwo_cutu.signature = signature; | |
9a3c8263 | 12527 | dwo_cutu |
b0b6a987 TT |
12528 | = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
12529 | &find_dwo_cutu); | |
6a506a2d | 12530 | } |
33c5cd75 | 12531 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 12532 | { |
33c5cd75 DB |
12533 | struct dwo_unit find_dwo_cutu; |
12534 | ||
12535 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12536 | find_dwo_cutu.signature = signature; | |
b0b6a987 | 12537 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus.get (), |
33c5cd75 | 12538 | &find_dwo_cutu); |
6a506a2d DE |
12539 | } |
12540 | ||
12541 | if (dwo_cutu != NULL) | |
12542 | { | |
b4f54984 | 12543 | if (dwarf_read_debug) |
6a506a2d DE |
12544 | { |
12545 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
12546 | kind, dwo_name, hex_string (signature), | |
12547 | host_address_to_string (dwo_cutu)); | |
12548 | } | |
12549 | return dwo_cutu; | |
80626a55 DE |
12550 | } |
12551 | } | |
2e276125 | 12552 | } |
9cdd5dbd | 12553 | |
80626a55 DE |
12554 | /* We didn't find it. This could mean a dwo_id mismatch, or |
12555 | someone deleted the DWO/DWP file, or the search path isn't set up | |
12556 | correctly to find the file. */ | |
12557 | ||
b4f54984 | 12558 | if (dwarf_read_debug) |
80626a55 DE |
12559 | { |
12560 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
12561 | kind, dwo_name, hex_string (signature)); | |
12562 | } | |
3019eac3 | 12563 | |
6656a72d DE |
12564 | /* This is a warning and not a complaint because it can be caused by |
12565 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
12566 | { |
12567 | /* Print the name of the DWP file if we looked there, helps the user | |
12568 | better diagnose the problem. */ | |
791afaa2 | 12569 | std::string dwp_text; |
43942612 DE |
12570 | |
12571 | if (dwp_file != NULL) | |
791afaa2 TT |
12572 | dwp_text = string_printf (" [in DWP file %s]", |
12573 | lbasename (dwp_file->name)); | |
43942612 | 12574 | |
9d8780f0 | 12575 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 DE |
12576 | " [in module %s]"), |
12577 | kind, dwo_name, hex_string (signature), | |
791afaa2 | 12578 | dwp_text.c_str (), |
43942612 | 12579 | this_unit->is_debug_types ? "TU" : "CU", |
9d8780f0 | 12580 | sect_offset_str (this_unit->sect_off), objfile_name (objfile)); |
43942612 | 12581 | } |
3019eac3 | 12582 | return NULL; |
5fb290d7 DJ |
12583 | } |
12584 | ||
80626a55 DE |
12585 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
12586 | See lookup_dwo_cutu_unit for details. */ | |
12587 | ||
12588 | static struct dwo_unit * | |
12589 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
12590 | const char *dwo_name, const char *comp_dir, | |
12591 | ULONGEST signature) | |
12592 | { | |
12593 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
12594 | } | |
12595 | ||
12596 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
12597 | See lookup_dwo_cutu_unit for details. */ | |
12598 | ||
12599 | static struct dwo_unit * | |
12600 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
12601 | const char *dwo_name, const char *comp_dir) | |
12602 | { | |
12603 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
12604 | } | |
12605 | ||
89e63ee4 DE |
12606 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
12607 | ||
12608 | static int | |
12609 | queue_and_load_dwo_tu (void **slot, void *info) | |
12610 | { | |
12611 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
12612 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
12613 | ULONGEST signature = dwo_unit->signature; | |
12614 | struct signatured_type *sig_type = | |
12615 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
12616 | ||
12617 | if (sig_type != NULL) | |
12618 | { | |
12619 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
12620 | ||
12621 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
12622 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
12623 | while processing PER_CU. */ | |
12624 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
12625 | load_full_type_unit (sig_cu); | |
ae640021 | 12626 | per_cu->imported_symtabs_push (sig_cu); |
89e63ee4 DE |
12627 | } |
12628 | ||
12629 | return 1; | |
12630 | } | |
12631 | ||
12632 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
12633 | The DWO may have the only definition of the type, though it may not be | |
12634 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
12635 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
12636 | ||
12637 | static void | |
12638 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
12639 | { | |
12640 | struct dwo_unit *dwo_unit; | |
12641 | struct dwo_file *dwo_file; | |
12642 | ||
12643 | gdb_assert (!per_cu->is_debug_types); | |
ed2dc618 | 12644 | gdb_assert (get_dwp_file (per_cu->dwarf2_per_objfile) == NULL); |
89e63ee4 DE |
12645 | gdb_assert (per_cu->cu != NULL); |
12646 | ||
12647 | dwo_unit = per_cu->cu->dwo_unit; | |
12648 | gdb_assert (dwo_unit != NULL); | |
12649 | ||
12650 | dwo_file = dwo_unit->dwo_file; | |
12651 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
12652 | htab_traverse_noresize (dwo_file->tus.get (), queue_and_load_dwo_tu, |
12653 | per_cu); | |
89e63ee4 DE |
12654 | } |
12655 | ||
3019eac3 | 12656 | /* Read in various DIEs. */ |
348e048f | 12657 | |
d389af10 | 12658 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
12659 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
12660 | already referenced by DW_AT_abstract_origin from the children of the | |
12661 | current DIE. */ | |
d389af10 JK |
12662 | |
12663 | static void | |
12664 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
12665 | { | |
12666 | struct die_info *child_die; | |
791afaa2 | 12667 | sect_offset *offsetp; |
d389af10 JK |
12668 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
12669 | struct die_info *origin_die; | |
12670 | /* Iterator of the ORIGIN_DIE children. */ | |
12671 | struct die_info *origin_child_die; | |
d389af10 | 12672 | struct attribute *attr; |
cd02d79d PA |
12673 | struct dwarf2_cu *origin_cu; |
12674 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
12675 | |
12676 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
12677 | if (!attr) | |
12678 | return; | |
12679 | ||
cd02d79d PA |
12680 | /* Note that following die references may follow to a die in a |
12681 | different cu. */ | |
12682 | ||
12683 | origin_cu = cu; | |
12684 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
12685 | ||
12686 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
12687 | symbols in. */ | |
12688 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
12689 | origin_cu->list_in_scope = cu->list_in_scope; | |
12690 | ||
edb3359d DJ |
12691 | if (die->tag != origin_die->tag |
12692 | && !(die->tag == DW_TAG_inlined_subroutine | |
12693 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 12694 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
12695 | sect_offset_str (die->sect_off), |
12696 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 12697 | |
791afaa2 | 12698 | std::vector<sect_offset> offsets; |
d389af10 | 12699 | |
3ea89b92 PMR |
12700 | for (child_die = die->child; |
12701 | child_die && child_die->tag; | |
12702 | child_die = sibling_die (child_die)) | |
12703 | { | |
12704 | struct die_info *child_origin_die; | |
12705 | struct dwarf2_cu *child_origin_cu; | |
12706 | ||
12707 | /* We are trying to process concrete instance entries: | |
216f72a1 | 12708 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
12709 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
12710 | present in the abstract instance but not referenced in the concrete | |
12711 | one. */ | |
216f72a1 JK |
12712 | if (child_die->tag == DW_TAG_call_site |
12713 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
12714 | continue; |
12715 | ||
c38f313d DJ |
12716 | /* For each CHILD_DIE, find the corresponding child of |
12717 | ORIGIN_DIE. If there is more than one layer of | |
12718 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
12719 | but GCC versions at least through 4.4 generate this (GCC PR | |
12720 | 40573). */ | |
3ea89b92 PMR |
12721 | child_origin_die = child_die; |
12722 | child_origin_cu = cu; | |
c38f313d DJ |
12723 | while (1) |
12724 | { | |
cd02d79d PA |
12725 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
12726 | child_origin_cu); | |
c38f313d DJ |
12727 | if (attr == NULL) |
12728 | break; | |
cd02d79d PA |
12729 | child_origin_die = follow_die_ref (child_origin_die, attr, |
12730 | &child_origin_cu); | |
c38f313d DJ |
12731 | } |
12732 | ||
d389af10 JK |
12733 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
12734 | counterpart may exist. */ | |
c38f313d | 12735 | if (child_origin_die != child_die) |
d389af10 | 12736 | { |
edb3359d DJ |
12737 | if (child_die->tag != child_origin_die->tag |
12738 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
12739 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 12740 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 12741 | "different tags"), |
9d8780f0 SM |
12742 | sect_offset_str (child_die->sect_off), |
12743 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 12744 | if (child_origin_die->parent != origin_die) |
b98664d3 | 12745 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 12746 | "different parents"), |
9d8780f0 SM |
12747 | sect_offset_str (child_die->sect_off), |
12748 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 12749 | else |
791afaa2 | 12750 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 12751 | } |
d389af10 | 12752 | } |
791afaa2 TT |
12753 | std::sort (offsets.begin (), offsets.end ()); |
12754 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
12755 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 12756 | if (offsetp[-1] == *offsetp) |
b98664d3 | 12757 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
12758 | "to DIE %s as their abstract origin"), |
12759 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 12760 | |
791afaa2 | 12761 | offsetp = offsets.data (); |
d389af10 JK |
12762 | origin_child_die = origin_die->child; |
12763 | while (origin_child_die && origin_child_die->tag) | |
12764 | { | |
12765 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 12766 | while (offsetp < offsets_end |
9c541725 | 12767 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 12768 | offsetp++; |
b64f50a1 | 12769 | if (offsetp >= offsets_end |
9c541725 | 12770 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 12771 | { |
adde2bff DE |
12772 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
12773 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
12774 | This can happen with mutually referenced abstract_origins. | |
12775 | PR 16581. */ | |
12776 | if (!origin_child_die->in_process) | |
12777 | process_die (origin_child_die, origin_cu); | |
d389af10 JK |
12778 | } |
12779 | origin_child_die = sibling_die (origin_child_die); | |
12780 | } | |
cd02d79d | 12781 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
12782 | |
12783 | if (cu != origin_cu) | |
12784 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
12785 | } |
12786 | ||
c906108c | 12787 | static void |
e7c27a73 | 12788 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12789 | { |
518817b3 | 12790 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 12791 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 12792 | struct context_stack *newobj; |
c906108c SS |
12793 | CORE_ADDR lowpc; |
12794 | CORE_ADDR highpc; | |
12795 | struct die_info *child_die; | |
edb3359d | 12796 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 12797 | const char *name; |
e142c38c | 12798 | CORE_ADDR baseaddr; |
801e3a5b | 12799 | struct block *block; |
edb3359d | 12800 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 12801 | std::vector<struct symbol *> template_args; |
34eaf542 | 12802 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
12803 | |
12804 | if (inlined_func) | |
12805 | { | |
12806 | /* If we do not have call site information, we can't show the | |
12807 | caller of this inlined function. That's too confusing, so | |
12808 | only use the scope for local variables. */ | |
12809 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
12810 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
12811 | if (call_line == NULL || call_file == NULL) | |
12812 | { | |
12813 | read_lexical_block_scope (die, cu); | |
12814 | return; | |
12815 | } | |
12816 | } | |
c906108c | 12817 | |
b3b3bada | 12818 | baseaddr = objfile->text_section_offset (); |
e142c38c | 12819 | |
94af9270 | 12820 | name = dwarf2_name (die, cu); |
c906108c | 12821 | |
e8d05480 JB |
12822 | /* Ignore functions with missing or empty names. These are actually |
12823 | illegal according to the DWARF standard. */ | |
12824 | if (name == NULL) | |
12825 | { | |
b98664d3 | 12826 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 12827 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
12828 | return; |
12829 | } | |
12830 | ||
12831 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 12832 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 12833 | <= PC_BOUNDS_INVALID) |
e8d05480 | 12834 | { |
ae4d0c03 PM |
12835 | attr = dwarf2_attr (die, DW_AT_external, cu); |
12836 | if (!attr || !DW_UNSND (attr)) | |
b98664d3 | 12837 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
12838 | "for subprogram DIE at %s"), |
12839 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
12840 | return; |
12841 | } | |
c906108c | 12842 | |
3e29f34a MR |
12843 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
12844 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 12845 | |
34eaf542 TT |
12846 | /* If we have any template arguments, then we must allocate a |
12847 | different sort of symbol. */ | |
12848 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
12849 | { | |
12850 | if (child_die->tag == DW_TAG_template_type_param | |
12851 | || child_die->tag == DW_TAG_template_value_param) | |
12852 | { | |
e623cf5d | 12853 | templ_func = allocate_template_symbol (objfile); |
cf724bc9 | 12854 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
12855 | break; |
12856 | } | |
12857 | } | |
12858 | ||
c24bdb02 | 12859 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
12860 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
12861 | (struct symbol *) templ_func); | |
4c2df51b | 12862 | |
81873cc8 | 12863 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 12864 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
12865 | cu->language); |
12866 | ||
4cecd739 DJ |
12867 | /* If there is a location expression for DW_AT_frame_base, record |
12868 | it. */ | |
e142c38c | 12869 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 12870 | if (attr != nullptr) |
fe978cb0 | 12871 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 12872 | |
63e43d3a PMR |
12873 | /* If there is a location for the static link, record it. */ |
12874 | newobj->static_link = NULL; | |
12875 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 12876 | if (attr != nullptr) |
63e43d3a | 12877 | { |
224c3ddb SM |
12878 | newobj->static_link |
12879 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d | 12880 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
09ba997f | 12881 | cu->per_cu->addr_type ()); |
63e43d3a PMR |
12882 | } |
12883 | ||
c24bdb02 | 12884 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 12885 | |
639d11d3 | 12886 | if (die->child != NULL) |
c906108c | 12887 | { |
639d11d3 | 12888 | child_die = die->child; |
c906108c SS |
12889 | while (child_die && child_die->tag) |
12890 | { | |
34eaf542 TT |
12891 | if (child_die->tag == DW_TAG_template_type_param |
12892 | || child_die->tag == DW_TAG_template_value_param) | |
12893 | { | |
12894 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
12895 | ||
f1078f66 | 12896 | if (arg != NULL) |
2f4732b0 | 12897 | template_args.push_back (arg); |
34eaf542 TT |
12898 | } |
12899 | else | |
12900 | process_die (child_die, cu); | |
c906108c SS |
12901 | child_die = sibling_die (child_die); |
12902 | } | |
12903 | } | |
12904 | ||
d389af10 JK |
12905 | inherit_abstract_dies (die, cu); |
12906 | ||
4a811a97 UW |
12907 | /* If we have a DW_AT_specification, we might need to import using |
12908 | directives from the context of the specification DIE. See the | |
12909 | comment in determine_prefix. */ | |
12910 | if (cu->language == language_cplus | |
12911 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
12912 | { | |
12913 | struct dwarf2_cu *spec_cu = cu; | |
12914 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
12915 | ||
12916 | while (spec_die) | |
12917 | { | |
12918 | child_die = spec_die->child; | |
12919 | while (child_die && child_die->tag) | |
12920 | { | |
12921 | if (child_die->tag == DW_TAG_imported_module) | |
12922 | process_die (child_die, spec_cu); | |
12923 | child_die = sibling_die (child_die); | |
12924 | } | |
12925 | ||
12926 | /* In some cases, GCC generates specification DIEs that | |
12927 | themselves contain DW_AT_specification attributes. */ | |
12928 | spec_die = die_specification (spec_die, &spec_cu); | |
12929 | } | |
12930 | } | |
12931 | ||
c24bdb02 | 12932 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 12933 | /* Make a block for the local symbols within. */ |
c24bdb02 | 12934 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 12935 | cstk.static_link, lowpc, highpc); |
801e3a5b | 12936 | |
df8a16a1 | 12937 | /* For C++, set the block's scope. */ |
45280282 IB |
12938 | if ((cu->language == language_cplus |
12939 | || cu->language == language_fortran | |
c44af4eb TT |
12940 | || cu->language == language_d |
12941 | || cu->language == language_rust) | |
4d4ec4e5 | 12942 | && cu->processing_has_namespace_info) |
195a3f6c TT |
12943 | block_set_scope (block, determine_prefix (die, cu), |
12944 | &objfile->objfile_obstack); | |
df8a16a1 | 12945 | |
801e3a5b JB |
12946 | /* If we have address ranges, record them. */ |
12947 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 12948 | |
a60f3166 | 12949 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 12950 | |
34eaf542 | 12951 | /* Attach template arguments to function. */ |
2f4732b0 | 12952 | if (!template_args.empty ()) |
34eaf542 TT |
12953 | { |
12954 | gdb_assert (templ_func != NULL); | |
12955 | ||
2f4732b0 | 12956 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 12957 | templ_func->template_arguments |
8d749320 SM |
12958 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
12959 | templ_func->n_template_arguments); | |
34eaf542 | 12960 | memcpy (templ_func->template_arguments, |
2f4732b0 | 12961 | template_args.data (), |
34eaf542 | 12962 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
12963 | |
12964 | /* Make sure that the symtab is set on the new symbols. Even | |
12965 | though they don't appear in this symtab directly, other parts | |
12966 | of gdb assume that symbols do, and this is reasonably | |
12967 | true. */ | |
8634679f | 12968 | for (symbol *sym : template_args) |
3e1d3d8c | 12969 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
12970 | } |
12971 | ||
208d8187 JB |
12972 | /* In C++, we can have functions nested inside functions (e.g., when |
12973 | a function declares a class that has methods). This means that | |
12974 | when we finish processing a function scope, we may need to go | |
12975 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
12976 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
12977 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 12978 | |
921e78cf JB |
12979 | /* If we've finished processing a top-level function, subsequent |
12980 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
12981 | if (cu->get_builder ()->outermost_context_p ()) |
12982 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
12983 | } |
12984 | ||
12985 | /* Process all the DIES contained within a lexical block scope. Start | |
12986 | a new scope, process the dies, and then close the scope. */ | |
12987 | ||
12988 | static void | |
e7c27a73 | 12989 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12990 | { |
518817b3 | 12991 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 12992 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
12993 | CORE_ADDR lowpc, highpc; |
12994 | struct die_info *child_die; | |
e142c38c DJ |
12995 | CORE_ADDR baseaddr; |
12996 | ||
b3b3bada | 12997 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
12998 | |
12999 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13000 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13001 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13002 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13003 | describe ranges. */ |
e385593e JK |
13004 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13005 | { | |
13006 | case PC_BOUNDS_NOT_PRESENT: | |
13007 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13008 | there was no wrapping by that DW_TAG_lexical_block. | |
13009 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13010 | for (child_die = die->child; | |
13011 | child_die != NULL && child_die->tag; | |
13012 | child_die = sibling_die (child_die)) | |
13013 | process_die (child_die, cu); | |
13014 | return; | |
13015 | case PC_BOUNDS_INVALID: | |
13016 | return; | |
13017 | } | |
3e29f34a MR |
13018 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13019 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13020 | |
c24bdb02 | 13021 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13022 | if (die->child != NULL) |
c906108c | 13023 | { |
639d11d3 | 13024 | child_die = die->child; |
c906108c SS |
13025 | while (child_die && child_die->tag) |
13026 | { | |
e7c27a73 | 13027 | process_die (child_die, cu); |
c906108c SS |
13028 | child_die = sibling_die (child_die); |
13029 | } | |
13030 | } | |
3ea89b92 | 13031 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13032 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13033 | |
c24bdb02 KS |
13034 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13035 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13036 | { |
801e3a5b | 13037 | struct block *block |
c24bdb02 | 13038 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13039 | cstk.start_addr, highpc); |
801e3a5b JB |
13040 | |
13041 | /* Note that recording ranges after traversing children, as we | |
13042 | do here, means that recording a parent's ranges entails | |
13043 | walking across all its children's ranges as they appear in | |
13044 | the address map, which is quadratic behavior. | |
13045 | ||
13046 | It would be nicer to record the parent's ranges before | |
13047 | traversing its children, simply overriding whatever you find | |
13048 | there. But since we don't even decide whether to create a | |
13049 | block until after we've traversed its children, that's hard | |
13050 | to do. */ | |
13051 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13052 | } |
c24bdb02 KS |
13053 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13054 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13055 | } |
13056 | ||
216f72a1 | 13057 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13058 | |
13059 | static void | |
13060 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13061 | { | |
518817b3 | 13062 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
96408a79 SA |
13063 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
13064 | CORE_ADDR pc, baseaddr; | |
13065 | struct attribute *attr; | |
13066 | struct call_site *call_site, call_site_local; | |
13067 | void **slot; | |
13068 | int nparams; | |
13069 | struct die_info *child_die; | |
13070 | ||
b3b3bada | 13071 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13072 | |
216f72a1 JK |
13073 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13074 | if (attr == NULL) | |
13075 | { | |
13076 | /* This was a pre-DWARF-5 GNU extension alias | |
13077 | for DW_AT_call_return_pc. */ | |
13078 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13079 | } | |
96408a79 SA |
13080 | if (!attr) |
13081 | { | |
b98664d3 | 13082 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13083 | "DIE %s [in module %s]"), |
13084 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13085 | return; |
13086 | } | |
cd6c91b4 | 13087 | pc = attr->value_as_address () + baseaddr; |
3e29f34a | 13088 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13089 | |
13090 | if (cu->call_site_htab == NULL) | |
13091 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13092 | NULL, &objfile->objfile_obstack, | |
13093 | hashtab_obstack_allocate, NULL); | |
13094 | call_site_local.pc = pc; | |
13095 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13096 | if (*slot != NULL) | |
13097 | { | |
b98664d3 | 13098 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13099 | "DIE %s [in module %s]"), |
13100 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13101 | objfile_name (objfile)); |
96408a79 SA |
13102 | return; |
13103 | } | |
13104 | ||
13105 | /* Count parameters at the caller. */ | |
13106 | ||
13107 | nparams = 0; | |
13108 | for (child_die = die->child; child_die && child_die->tag; | |
13109 | child_die = sibling_die (child_die)) | |
13110 | { | |
216f72a1 JK |
13111 | if (child_die->tag != DW_TAG_call_site_parameter |
13112 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 | 13113 | { |
b98664d3 | 13114 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13115 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13116 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13117 | objfile_name (objfile)); |
96408a79 SA |
13118 | continue; |
13119 | } | |
13120 | ||
13121 | nparams++; | |
13122 | } | |
13123 | ||
224c3ddb SM |
13124 | call_site |
13125 | = ((struct call_site *) | |
13126 | obstack_alloc (&objfile->objfile_obstack, | |
13127 | sizeof (*call_site) | |
13128 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13129 | *slot = call_site; |
13130 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13131 | call_site->pc = pc; | |
13132 | ||
216f72a1 JK |
13133 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13134 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13135 | { |
13136 | struct die_info *func_die; | |
13137 | ||
13138 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13139 | for (func_die = die->parent; | |
13140 | func_die && func_die->tag != DW_TAG_subprogram | |
13141 | && func_die->tag != DW_TAG_subroutine_type; | |
13142 | func_die = func_die->parent); | |
13143 | ||
216f72a1 JK |
13144 | /* DW_AT_call_all_calls is a superset |
13145 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13146 | if (func_die |
216f72a1 | 13147 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 13148 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 13149 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13150 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13151 | { | |
13152 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13153 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13154 | both the initial caller containing the real return address PC and | |
13155 | the final callee containing the current PC of a chain of tail | |
13156 | calls do not need to have the tail call list complete. But any | |
13157 | function candidate for a virtual tail call frame searched via | |
13158 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13159 | determined unambiguously. */ | |
13160 | } | |
13161 | else | |
13162 | { | |
13163 | struct type *func_type = NULL; | |
13164 | ||
13165 | if (func_die) | |
13166 | func_type = get_die_type (func_die, cu); | |
13167 | if (func_type != NULL) | |
13168 | { | |
13169 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
13170 | ||
13171 | /* Enlist this call site to the function. */ | |
13172 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13173 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13174 | } | |
13175 | else | |
b98664d3 | 13176 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13177 | "DIE %s [in module %s]"), |
13178 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13179 | } |
13180 | } | |
13181 | ||
216f72a1 JK |
13182 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13183 | if (attr == NULL) | |
13184 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
13185 | if (attr == NULL) | |
13186 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 13187 | if (attr == NULL) |
216f72a1 JK |
13188 | { |
13189 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
13190 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13191 | } | |
96408a79 | 13192 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
4fc6c0d5 | 13193 | if (!attr || (attr->form_is_block () && DW_BLOCK (attr)->size == 0)) |
96408a79 | 13194 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 13195 | else if (attr->form_is_block ()) |
96408a79 SA |
13196 | { |
13197 | struct dwarf2_locexpr_baton *dlbaton; | |
13198 | ||
8d749320 | 13199 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
13200 | dlbaton->data = DW_BLOCK (attr)->data; |
13201 | dlbaton->size = DW_BLOCK (attr)->size; | |
13202 | dlbaton->per_cu = cu->per_cu; | |
13203 | ||
13204 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
13205 | } | |
cd6c91b4 | 13206 | else if (attr->form_is_ref ()) |
96408a79 | 13207 | { |
96408a79 SA |
13208 | struct dwarf2_cu *target_cu = cu; |
13209 | struct die_info *target_die; | |
13210 | ||
ac9ec31b | 13211 | target_die = follow_die_ref (die, attr, &target_cu); |
518817b3 | 13212 | gdb_assert (target_cu->per_cu->dwarf2_per_objfile->objfile == objfile); |
96408a79 SA |
13213 | if (die_is_declaration (target_die, target_cu)) |
13214 | { | |
7d45c7c3 | 13215 | const char *target_physname; |
9112db09 JK |
13216 | |
13217 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 13218 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 13219 | if (target_physname == NULL) |
9112db09 | 13220 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 13221 | if (target_physname == NULL) |
b98664d3 | 13222 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13223 | "physname, for referencing DIE %s [in module %s]"), |
13224 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13225 | else |
7d455152 | 13226 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
13227 | } |
13228 | else | |
13229 | { | |
13230 | CORE_ADDR lowpc; | |
13231 | ||
13232 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 13233 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 13234 | <= PC_BOUNDS_INVALID) |
b98664d3 | 13235 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13236 | "low pc, for referencing DIE %s [in module %s]"), |
13237 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13238 | else |
3e29f34a MR |
13239 | { |
13240 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
13241 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
13242 | } | |
96408a79 SA |
13243 | } |
13244 | } | |
13245 | else | |
b98664d3 | 13246 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
13247 | "block nor reference, for DIE %s [in module %s]"), |
13248 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13249 | |
13250 | call_site->per_cu = cu->per_cu; | |
13251 | ||
13252 | for (child_die = die->child; | |
13253 | child_die && child_die->tag; | |
13254 | child_die = sibling_die (child_die)) | |
13255 | { | |
96408a79 | 13256 | struct call_site_parameter *parameter; |
1788b2d3 | 13257 | struct attribute *loc, *origin; |
96408a79 | 13258 | |
216f72a1 JK |
13259 | if (child_die->tag != DW_TAG_call_site_parameter |
13260 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
13261 | { |
13262 | /* Already printed the complaint above. */ | |
13263 | continue; | |
13264 | } | |
13265 | ||
13266 | gdb_assert (call_site->parameter_count < nparams); | |
13267 | parameter = &call_site->parameter[call_site->parameter_count]; | |
13268 | ||
1788b2d3 JK |
13269 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
13270 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 13271 | register is contained in DW_AT_call_value. */ |
96408a79 | 13272 | |
24c5c679 | 13273 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
13274 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
13275 | if (origin == NULL) | |
13276 | { | |
13277 | /* This was a pre-DWARF-5 GNU extension alias | |
13278 | for DW_AT_call_parameter. */ | |
13279 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
13280 | } | |
cd6c91b4 | 13281 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 13282 | { |
1788b2d3 | 13283 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 PA |
13284 | |
13285 | sect_offset sect_off | |
13286 | = (sect_offset) dwarf2_get_ref_die_offset (origin); | |
4057dfde | 13287 | if (!cu->header.offset_in_cu_p (sect_off)) |
d76b7dbc JK |
13288 | { |
13289 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
13290 | binding can be done only inside one CU. Such referenced DIE | |
13291 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 13292 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
13293 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13294 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13295 | objfile_name (objfile)); |
d76b7dbc JK |
13296 | continue; |
13297 | } | |
9c541725 PA |
13298 | parameter->u.param_cu_off |
13299 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 13300 | } |
4fc6c0d5 | 13301 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 13302 | { |
b98664d3 | 13303 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
13304 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13305 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13306 | continue; |
13307 | } | |
24c5c679 | 13308 | else |
96408a79 | 13309 | { |
24c5c679 JK |
13310 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
13311 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
13312 | if (parameter->u.dwarf_reg != -1) | |
13313 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
13314 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
13315 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
13316 | ¶meter->u.fb_offset)) | |
13317 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
13318 | else | |
13319 | { | |
b98664d3 | 13320 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 13321 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 13322 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 13323 | "[in module %s]"), |
9d8780f0 | 13324 | sect_offset_str (child_die->sect_off), |
9c541725 | 13325 | objfile_name (objfile)); |
24c5c679 JK |
13326 | continue; |
13327 | } | |
96408a79 SA |
13328 | } |
13329 | ||
216f72a1 JK |
13330 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
13331 | if (attr == NULL) | |
13332 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 13333 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 13334 | { |
b98664d3 | 13335 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
13336 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13337 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13338 | objfile_name (objfile)); |
96408a79 SA |
13339 | continue; |
13340 | } | |
13341 | parameter->value = DW_BLOCK (attr)->data; | |
13342 | parameter->value_size = DW_BLOCK (attr)->size; | |
13343 | ||
13344 | /* Parameters are not pre-cleared by memset above. */ | |
13345 | parameter->data_value = NULL; | |
13346 | parameter->data_value_size = 0; | |
13347 | call_site->parameter_count++; | |
13348 | ||
216f72a1 JK |
13349 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
13350 | if (attr == NULL) | |
13351 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 13352 | if (attr != nullptr) |
96408a79 | 13353 | { |
4fc6c0d5 | 13354 | if (!attr->form_is_block ()) |
b98664d3 | 13355 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
13356 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13357 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13358 | objfile_name (objfile)); |
96408a79 SA |
13359 | else |
13360 | { | |
13361 | parameter->data_value = DW_BLOCK (attr)->data; | |
13362 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
13363 | } | |
13364 | } | |
13365 | } | |
13366 | } | |
13367 | ||
71a3c369 TT |
13368 | /* Helper function for read_variable. If DIE represents a virtual |
13369 | table, then return the type of the concrete object that is | |
13370 | associated with the virtual table. Otherwise, return NULL. */ | |
13371 | ||
13372 | static struct type * | |
13373 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
13374 | { | |
13375 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
13376 | if (attr == NULL) | |
13377 | return NULL; | |
13378 | ||
13379 | /* Find the type DIE. */ | |
13380 | struct die_info *type_die = NULL; | |
13381 | struct dwarf2_cu *type_cu = cu; | |
13382 | ||
cd6c91b4 | 13383 | if (attr->form_is_ref ()) |
71a3c369 TT |
13384 | type_die = follow_die_ref (die, attr, &type_cu); |
13385 | if (type_die == NULL) | |
13386 | return NULL; | |
13387 | ||
13388 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
13389 | return NULL; | |
13390 | return die_containing_type (type_die, type_cu); | |
13391 | } | |
13392 | ||
13393 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
13394 | ||
13395 | static void | |
13396 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
13397 | { | |
13398 | struct rust_vtable_symbol *storage = NULL; | |
13399 | ||
13400 | if (cu->language == language_rust) | |
13401 | { | |
13402 | struct type *containing_type = rust_containing_type (die, cu); | |
13403 | ||
13404 | if (containing_type != NULL) | |
13405 | { | |
518817b3 | 13406 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
71a3c369 | 13407 | |
468c0cbb | 13408 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol (); |
71a3c369 TT |
13409 | initialize_objfile_symbol (storage); |
13410 | storage->concrete_type = containing_type; | |
cf724bc9 | 13411 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
13412 | } |
13413 | } | |
13414 | ||
e4a62c65 TV |
13415 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
13416 | struct attribute *abstract_origin | |
13417 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13418 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
13419 | if (res == NULL && loc && abstract_origin) | |
13420 | { | |
13421 | /* We have a variable without a name, but with a location and an abstract | |
13422 | origin. This may be a concrete instance of an abstract variable | |
13423 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
13424 | later. */ | |
13425 | struct dwarf2_cu *origin_cu = cu; | |
13426 | struct die_info *origin_die | |
13427 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
13428 | dwarf2_per_objfile *dpo = cu->per_cu->dwarf2_per_objfile; | |
3360b6e7 | 13429 | dpo->abstract_to_concrete[origin_die->sect_off].push_back (die->sect_off); |
e4a62c65 | 13430 | } |
71a3c369 TT |
13431 | } |
13432 | ||
43988095 JK |
13433 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
13434 | reading .debug_rnglists. | |
13435 | Callback's type should be: | |
13436 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13437 | Return true if the attributes are present and valid, otherwise, | |
13438 | return false. */ | |
13439 | ||
13440 | template <typename Callback> | |
13441 | static bool | |
13442 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
13443 | Callback &&callback) | |
13444 | { | |
ed2dc618 | 13445 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 13446 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 13447 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43988095 | 13448 | bfd *obfd = objfile->obfd; |
43988095 JK |
13449 | /* Base address selection entry. */ |
13450 | CORE_ADDR base; | |
13451 | int found_base; | |
43988095 | 13452 | const gdb_byte *buffer; |
43988095 JK |
13453 | CORE_ADDR baseaddr; |
13454 | bool overflow = false; | |
13455 | ||
13456 | found_base = cu->base_known; | |
13457 | base = cu->base_address; | |
13458 | ||
96b79293 | 13459 | dwarf2_per_objfile->rnglists.read (objfile); |
43988095 JK |
13460 | if (offset >= dwarf2_per_objfile->rnglists.size) |
13461 | { | |
b98664d3 | 13462 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
13463 | offset); |
13464 | return false; | |
13465 | } | |
13466 | buffer = dwarf2_per_objfile->rnglists.buffer + offset; | |
13467 | ||
b3b3bada | 13468 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
13469 | |
13470 | while (1) | |
13471 | { | |
7814882a JK |
13472 | /* Initialize it due to a false compiler warning. */ |
13473 | CORE_ADDR range_beginning = 0, range_end = 0; | |
43988095 JK |
13474 | const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer |
13475 | + dwarf2_per_objfile->rnglists.size); | |
13476 | unsigned int bytes_read; | |
13477 | ||
13478 | if (buffer == buf_end) | |
13479 | { | |
13480 | overflow = true; | |
13481 | break; | |
13482 | } | |
13483 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
13484 | switch (rlet) | |
13485 | { | |
13486 | case DW_RLE_end_of_list: | |
13487 | break; | |
13488 | case DW_RLE_base_address: | |
13489 | if (buffer + cu->header.addr_size > buf_end) | |
13490 | { | |
13491 | overflow = true; | |
13492 | break; | |
13493 | } | |
c8a7a66f | 13494 | base = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13495 | found_base = 1; |
13496 | buffer += bytes_read; | |
13497 | break; | |
13498 | case DW_RLE_start_length: | |
13499 | if (buffer + cu->header.addr_size > buf_end) | |
13500 | { | |
13501 | overflow = true; | |
13502 | break; | |
13503 | } | |
c8a7a66f TT |
13504 | range_beginning = cu->header.read_address (obfd, buffer, |
13505 | &bytes_read); | |
43988095 JK |
13506 | buffer += bytes_read; |
13507 | range_end = (range_beginning | |
13508 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
13509 | buffer += bytes_read; | |
13510 | if (buffer > buf_end) | |
13511 | { | |
13512 | overflow = true; | |
13513 | break; | |
13514 | } | |
13515 | break; | |
13516 | case DW_RLE_offset_pair: | |
13517 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13518 | buffer += bytes_read; | |
13519 | if (buffer > buf_end) | |
13520 | { | |
13521 | overflow = true; | |
13522 | break; | |
13523 | } | |
13524 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13525 | buffer += bytes_read; | |
13526 | if (buffer > buf_end) | |
13527 | { | |
13528 | overflow = true; | |
13529 | break; | |
13530 | } | |
13531 | break; | |
13532 | case DW_RLE_start_end: | |
13533 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
13534 | { | |
13535 | overflow = true; | |
13536 | break; | |
13537 | } | |
c8a7a66f TT |
13538 | range_beginning = cu->header.read_address (obfd, buffer, |
13539 | &bytes_read); | |
43988095 | 13540 | buffer += bytes_read; |
c8a7a66f | 13541 | range_end = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13542 | buffer += bytes_read; |
13543 | break; | |
13544 | default: | |
b98664d3 | 13545 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13546 | return false; |
13547 | } | |
13548 | if (rlet == DW_RLE_end_of_list || overflow) | |
13549 | break; | |
13550 | if (rlet == DW_RLE_base_address) | |
13551 | continue; | |
13552 | ||
13553 | if (!found_base) | |
13554 | { | |
13555 | /* We have no valid base address for the ranges | |
13556 | data. */ | |
b98664d3 | 13557 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13558 | return false; |
13559 | } | |
13560 | ||
13561 | if (range_beginning > range_end) | |
13562 | { | |
13563 | /* Inverted range entries are invalid. */ | |
b98664d3 | 13564 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
13565 | return false; |
13566 | } | |
13567 | ||
13568 | /* Empty range entries have no effect. */ | |
13569 | if (range_beginning == range_end) | |
13570 | continue; | |
13571 | ||
13572 | range_beginning += base; | |
13573 | range_end += base; | |
13574 | ||
13575 | /* A not-uncommon case of bad debug info. | |
13576 | Don't pollute the addrmap with bad data. */ | |
13577 | if (range_beginning + baseaddr == 0 | |
13578 | && !dwarf2_per_objfile->has_section_at_zero) | |
13579 | { | |
b98664d3 | 13580 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
13581 | " [in module %s]"), objfile_name (objfile)); |
13582 | continue; | |
13583 | } | |
13584 | ||
13585 | callback (range_beginning, range_end); | |
13586 | } | |
13587 | ||
13588 | if (overflow) | |
13589 | { | |
b98664d3 | 13590 | complaint (_("Offset %d is not terminated " |
43988095 JK |
13591 | "for DW_AT_ranges attribute"), |
13592 | offset); | |
13593 | return false; | |
13594 | } | |
13595 | ||
13596 | return true; | |
13597 | } | |
13598 | ||
13599 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
13600 | Callback's type should be: | |
13601 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 13602 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 13603 | |
43988095 | 13604 | template <typename Callback> |
43039443 | 13605 | static int |
5f46c5a5 | 13606 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 13607 | Callback &&callback) |
43039443 | 13608 | { |
ed2dc618 | 13609 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 13610 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 13611 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43039443 JK |
13612 | struct comp_unit_head *cu_header = &cu->header; |
13613 | bfd *obfd = objfile->obfd; | |
13614 | unsigned int addr_size = cu_header->addr_size; | |
13615 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
13616 | /* Base address selection entry. */ | |
13617 | CORE_ADDR base; | |
13618 | int found_base; | |
13619 | unsigned int dummy; | |
d521ce57 | 13620 | const gdb_byte *buffer; |
ff013f42 | 13621 | CORE_ADDR baseaddr; |
43039443 | 13622 | |
43988095 JK |
13623 | if (cu_header->version >= 5) |
13624 | return dwarf2_rnglists_process (offset, cu, callback); | |
13625 | ||
d00adf39 DE |
13626 | found_base = cu->base_known; |
13627 | base = cu->base_address; | |
43039443 | 13628 | |
96b79293 | 13629 | dwarf2_per_objfile->ranges.read (objfile); |
dce234bc | 13630 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 | 13631 | { |
b98664d3 | 13632 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
13633 | offset); |
13634 | return 0; | |
13635 | } | |
dce234bc | 13636 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 | 13637 | |
b3b3bada | 13638 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 13639 | |
43039443 JK |
13640 | while (1) |
13641 | { | |
13642 | CORE_ADDR range_beginning, range_end; | |
13643 | ||
c8a7a66f | 13644 | range_beginning = cu->header.read_address (obfd, buffer, &dummy); |
43039443 | 13645 | buffer += addr_size; |
c8a7a66f | 13646 | range_end = cu->header.read_address (obfd, buffer, &dummy); |
43039443 JK |
13647 | buffer += addr_size; |
13648 | offset += 2 * addr_size; | |
13649 | ||
13650 | /* An end of list marker is a pair of zero addresses. */ | |
13651 | if (range_beginning == 0 && range_end == 0) | |
13652 | /* Found the end of list entry. */ | |
13653 | break; | |
13654 | ||
13655 | /* Each base address selection entry is a pair of 2 values. | |
13656 | The first is the largest possible address, the second is | |
13657 | the base address. Check for a base address here. */ | |
13658 | if ((range_beginning & mask) == mask) | |
13659 | { | |
28d2bfb9 AB |
13660 | /* If we found the largest possible address, then we already |
13661 | have the base address in range_end. */ | |
13662 | base = range_end; | |
43039443 JK |
13663 | found_base = 1; |
13664 | continue; | |
13665 | } | |
13666 | ||
13667 | if (!found_base) | |
13668 | { | |
13669 | /* We have no valid base address for the ranges | |
13670 | data. */ | |
b98664d3 | 13671 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
13672 | return 0; |
13673 | } | |
13674 | ||
9277c30c UW |
13675 | if (range_beginning > range_end) |
13676 | { | |
13677 | /* Inverted range entries are invalid. */ | |
b98664d3 | 13678 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
13679 | return 0; |
13680 | } | |
13681 | ||
13682 | /* Empty range entries have no effect. */ | |
13683 | if (range_beginning == range_end) | |
13684 | continue; | |
13685 | ||
43039443 JK |
13686 | range_beginning += base; |
13687 | range_end += base; | |
13688 | ||
01093045 DE |
13689 | /* A not-uncommon case of bad debug info. |
13690 | Don't pollute the addrmap with bad data. */ | |
13691 | if (range_beginning + baseaddr == 0 | |
13692 | && !dwarf2_per_objfile->has_section_at_zero) | |
13693 | { | |
b98664d3 | 13694 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 13695 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
13696 | continue; |
13697 | } | |
13698 | ||
5f46c5a5 JK |
13699 | callback (range_beginning, range_end); |
13700 | } | |
13701 | ||
13702 | return 1; | |
13703 | } | |
13704 | ||
13705 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
13706 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
13707 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
13708 | ||
13709 | static int | |
13710 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
13711 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
891813be | 13712 | dwarf2_psymtab *ranges_pst) |
5f46c5a5 | 13713 | { |
518817b3 | 13714 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5f46c5a5 | 13715 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
b3b3bada | 13716 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
13717 | int low_set = 0; |
13718 | CORE_ADDR low = 0; | |
13719 | CORE_ADDR high = 0; | |
13720 | int retval; | |
13721 | ||
13722 | retval = dwarf2_ranges_process (offset, cu, | |
13723 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13724 | { | |
9277c30c | 13725 | if (ranges_pst != NULL) |
3e29f34a MR |
13726 | { |
13727 | CORE_ADDR lowpc; | |
13728 | CORE_ADDR highpc; | |
13729 | ||
79748972 TT |
13730 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
13731 | range_beginning + baseaddr) | |
13732 | - baseaddr); | |
13733 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
13734 | range_end + baseaddr) | |
13735 | - baseaddr); | |
d320c2b5 TT |
13736 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
13737 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 13738 | } |
ff013f42 | 13739 | |
43039443 JK |
13740 | /* FIXME: This is recording everything as a low-high |
13741 | segment of consecutive addresses. We should have a | |
13742 | data structure for discontiguous block ranges | |
13743 | instead. */ | |
13744 | if (! low_set) | |
13745 | { | |
13746 | low = range_beginning; | |
13747 | high = range_end; | |
13748 | low_set = 1; | |
13749 | } | |
13750 | else | |
13751 | { | |
13752 | if (range_beginning < low) | |
13753 | low = range_beginning; | |
13754 | if (range_end > high) | |
13755 | high = range_end; | |
13756 | } | |
5f46c5a5 JK |
13757 | }); |
13758 | if (!retval) | |
13759 | return 0; | |
43039443 JK |
13760 | |
13761 | if (! low_set) | |
13762 | /* If the first entry is an end-of-list marker, the range | |
13763 | describes an empty scope, i.e. no instructions. */ | |
13764 | return 0; | |
13765 | ||
13766 | if (low_return) | |
13767 | *low_return = low; | |
13768 | if (high_return) | |
13769 | *high_return = high; | |
13770 | return 1; | |
13771 | } | |
13772 | ||
3a2b436a JK |
13773 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
13774 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 13775 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 13776 | |
3a2b436a | 13777 | static enum pc_bounds_kind |
af34e669 | 13778 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 13779 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 13780 | dwarf2_psymtab *pst) |
c906108c | 13781 | { |
518817b3 SM |
13782 | struct dwarf2_per_objfile *dwarf2_per_objfile |
13783 | = cu->per_cu->dwarf2_per_objfile; | |
c906108c | 13784 | struct attribute *attr; |
91da1414 | 13785 | struct attribute *attr_high; |
af34e669 DJ |
13786 | CORE_ADDR low = 0; |
13787 | CORE_ADDR high = 0; | |
e385593e | 13788 | enum pc_bounds_kind ret; |
c906108c | 13789 | |
91da1414 MW |
13790 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
13791 | if (attr_high) | |
af34e669 | 13792 | { |
e142c38c | 13793 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 13794 | if (attr != nullptr) |
91da1414 | 13795 | { |
cd6c91b4 TT |
13796 | low = attr->value_as_address (); |
13797 | high = attr_high->value_as_address (); | |
13798 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) | |
31aa7e4e | 13799 | high += low; |
91da1414 | 13800 | } |
af34e669 DJ |
13801 | else |
13802 | /* Found high w/o low attribute. */ | |
e385593e | 13803 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
13804 | |
13805 | /* Found consecutive range of addresses. */ | |
3a2b436a | 13806 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 13807 | } |
c906108c | 13808 | else |
af34e669 | 13809 | { |
e142c38c | 13810 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
13811 | if (attr != NULL) |
13812 | { | |
18a8505e | 13813 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
13814 | We take advantage of the fact that DW_AT_ranges does not appear |
13815 | in DW_TAG_compile_unit of DWO files. */ | |
13816 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
13817 | unsigned int ranges_offset = (DW_UNSND (attr) | |
13818 | + (need_ranges_base | |
13819 | ? cu->ranges_base | |
13820 | : 0)); | |
2e3cf129 | 13821 | |
af34e669 | 13822 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 13823 | .debug_ranges section. */ |
2e3cf129 | 13824 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 13825 | return PC_BOUNDS_INVALID; |
43039443 | 13826 | /* Found discontinuous range of addresses. */ |
3a2b436a | 13827 | ret = PC_BOUNDS_RANGES; |
af34e669 | 13828 | } |
e385593e JK |
13829 | else |
13830 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 13831 | } |
c906108c | 13832 | |
48fbe735 | 13833 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 13834 | if (high <= low) |
e385593e | 13835 | return PC_BOUNDS_INVALID; |
c906108c SS |
13836 | |
13837 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
13838 | eliminate duplicate copies of functions and vtables and such. | |
13839 | The linker will arbitrarily choose one and discard the others. | |
13840 | The AT_*_pc values for such functions refer to local labels in | |
13841 | these sections. If the section from that file was discarded, the | |
13842 | labels are not in the output, so the relocs get a value of 0. | |
13843 | If this is a discarded function, mark the pc bounds as invalid, | |
13844 | so that GDB will ignore it. */ | |
72dca2f5 | 13845 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
e385593e | 13846 | return PC_BOUNDS_INVALID; |
c906108c SS |
13847 | |
13848 | *lowpc = low; | |
96408a79 SA |
13849 | if (highpc) |
13850 | *highpc = high; | |
af34e669 | 13851 | return ret; |
c906108c SS |
13852 | } |
13853 | ||
b084d499 JB |
13854 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
13855 | its low and high PC addresses. Do nothing if these addresses could not | |
13856 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
13857 | and HIGHPC to the high address if greater than HIGHPC. */ | |
13858 | ||
13859 | static void | |
13860 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
13861 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
13862 | struct dwarf2_cu *cu) | |
13863 | { | |
13864 | CORE_ADDR low, high; | |
13865 | struct die_info *child = die->child; | |
13866 | ||
e385593e | 13867 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 13868 | { |
325fac50 PA |
13869 | *lowpc = std::min (*lowpc, low); |
13870 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
13871 | } |
13872 | ||
13873 | /* If the language does not allow nested subprograms (either inside | |
13874 | subprograms or lexical blocks), we're done. */ | |
13875 | if (cu->language != language_ada) | |
13876 | return; | |
6e70227d | 13877 | |
b084d499 JB |
13878 | /* Check all the children of the given DIE. If it contains nested |
13879 | subprograms, then check their pc bounds. Likewise, we need to | |
13880 | check lexical blocks as well, as they may also contain subprogram | |
13881 | definitions. */ | |
13882 | while (child && child->tag) | |
13883 | { | |
13884 | if (child->tag == DW_TAG_subprogram | |
13885 | || child->tag == DW_TAG_lexical_block) | |
13886 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
13887 | child = sibling_die (child); | |
13888 | } | |
13889 | } | |
13890 | ||
fae299cd DC |
13891 | /* Get the low and high pc's represented by the scope DIE, and store |
13892 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
13893 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
13894 | ||
13895 | static void | |
13896 | get_scope_pc_bounds (struct die_info *die, | |
13897 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
13898 | struct dwarf2_cu *cu) | |
13899 | { | |
13900 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
13901 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
13902 | CORE_ADDR current_low, current_high; | |
13903 | ||
3a2b436a | 13904 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 13905 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
13906 | { |
13907 | best_low = current_low; | |
13908 | best_high = current_high; | |
13909 | } | |
13910 | else | |
13911 | { | |
13912 | struct die_info *child = die->child; | |
13913 | ||
13914 | while (child && child->tag) | |
13915 | { | |
13916 | switch (child->tag) { | |
13917 | case DW_TAG_subprogram: | |
b084d499 | 13918 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
13919 | break; |
13920 | case DW_TAG_namespace: | |
f55ee35c | 13921 | case DW_TAG_module: |
fae299cd DC |
13922 | /* FIXME: carlton/2004-01-16: Should we do this for |
13923 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
13924 | that current GCC's always emit the DIEs corresponding | |
13925 | to definitions of methods of classes as children of a | |
13926 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
13927 | the DIEs giving the declarations, which could be | |
13928 | anywhere). But I don't see any reason why the | |
13929 | standards says that they have to be there. */ | |
13930 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
13931 | ||
13932 | if (current_low != ((CORE_ADDR) -1)) | |
13933 | { | |
325fac50 PA |
13934 | best_low = std::min (best_low, current_low); |
13935 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
13936 | } |
13937 | break; | |
13938 | default: | |
0963b4bd | 13939 | /* Ignore. */ |
fae299cd DC |
13940 | break; |
13941 | } | |
13942 | ||
13943 | child = sibling_die (child); | |
13944 | } | |
13945 | } | |
13946 | ||
13947 | *lowpc = best_low; | |
13948 | *highpc = best_high; | |
13949 | } | |
13950 | ||
801e3a5b JB |
13951 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
13952 | in DIE. */ | |
380bca97 | 13953 | |
801e3a5b JB |
13954 | static void |
13955 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
13956 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
13957 | { | |
518817b3 | 13958 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13959 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 13960 | struct attribute *attr; |
91da1414 | 13961 | struct attribute *attr_high; |
801e3a5b | 13962 | |
91da1414 MW |
13963 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
13964 | if (attr_high) | |
801e3a5b | 13965 | { |
801e3a5b | 13966 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 13967 | if (attr != nullptr) |
801e3a5b | 13968 | { |
cd6c91b4 TT |
13969 | CORE_ADDR low = attr->value_as_address (); |
13970 | CORE_ADDR high = attr_high->value_as_address (); | |
31aa7e4e | 13971 | |
cd6c91b4 | 13972 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 13973 | high += low; |
9a619af0 | 13974 | |
3e29f34a MR |
13975 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
13976 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 13977 | cu->get_builder ()->record_block_range (block, low, high - 1); |
801e3a5b JB |
13978 | } |
13979 | } | |
13980 | ||
13981 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
435d3d88 | 13982 | if (attr != nullptr) |
801e3a5b | 13983 | { |
18a8505e | 13984 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
13985 | We take advantage of the fact that DW_AT_ranges does not appear |
13986 | in DW_TAG_compile_unit of DWO files. */ | |
13987 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
13988 | |
13989 | /* The value of the DW_AT_ranges attribute is the offset of the | |
13990 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
13991 | unsigned long offset = (DW_UNSND (attr) |
13992 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 13993 | |
2d5f09ec | 13994 | std::vector<blockrange> blockvec; |
5f46c5a5 JK |
13995 | dwarf2_ranges_process (offset, cu, |
13996 | [&] (CORE_ADDR start, CORE_ADDR end) | |
13997 | { | |
58fdfd2c JK |
13998 | start += baseaddr; |
13999 | end += baseaddr; | |
5f46c5a5 JK |
14000 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14001 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14002 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14003 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14004 | }); |
2d5f09ec KB |
14005 | |
14006 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14007 | } |
14008 | } | |
14009 | ||
685b1105 JK |
14010 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14011 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14012 | |
685b1105 JK |
14013 | static void |
14014 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14015 | { |
38360086 | 14016 | int major, minor; |
60d5a603 JK |
14017 | |
14018 | if (cu->producer == NULL) | |
14019 | { | |
14020 | /* For unknown compilers expect their behavior is DWARF version | |
14021 | compliant. | |
14022 | ||
14023 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14024 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14025 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14026 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14027 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14028 | } |
b1ffba5a | 14029 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14030 | { |
38360086 MW |
14031 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14032 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14033 | } |
5230b05a | 14034 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14035 | { |
14036 | cu->producer_is_icc = true; | |
14037 | cu->producer_is_icc_lt_14 = major < 14; | |
14038 | } | |
c258c396 JD |
14039 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14040 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14041 | else |
14042 | { | |
14043 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14044 | compliant. */ | |
60d5a603 JK |
14045 | } |
14046 | ||
9068261f | 14047 | cu->checked_producer = true; |
685b1105 | 14048 | } |
ba919b58 | 14049 | |
685b1105 JK |
14050 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14051 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14052 | during 4.6.0 experimental. */ | |
14053 | ||
9068261f | 14054 | static bool |
685b1105 JK |
14055 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14056 | { | |
14057 | if (!cu->checked_producer) | |
14058 | check_producer (cu); | |
14059 | ||
14060 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14061 | } |
14062 | ||
c258c396 JD |
14063 | |
14064 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14065 | with incorrect is_stmt attributes. */ | |
14066 | ||
14067 | static bool | |
14068 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14069 | { | |
14070 | if (!cu->checked_producer) | |
14071 | check_producer (cu); | |
14072 | ||
14073 | return cu->producer_is_codewarrior; | |
14074 | } | |
14075 | ||
405feb71 | 14076 | /* Return the default accessibility type if it is not overridden by |
60d5a603 JK |
14077 | DW_AT_accessibility. */ |
14078 | ||
14079 | static enum dwarf_access_attribute | |
14080 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14081 | { | |
14082 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14083 | { | |
14084 | /* The default DWARF 2 accessibility for members is public, the default | |
14085 | accessibility for inheritance is private. */ | |
14086 | ||
14087 | if (die->tag != DW_TAG_inheritance) | |
14088 | return DW_ACCESS_public; | |
14089 | else | |
14090 | return DW_ACCESS_private; | |
14091 | } | |
14092 | else | |
14093 | { | |
14094 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14095 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14096 | depends on the container kind. */ | |
14097 | ||
14098 | if (die->parent->tag == DW_TAG_class_type) | |
14099 | return DW_ACCESS_private; | |
14100 | else | |
14101 | return DW_ACCESS_public; | |
14102 | } | |
14103 | } | |
14104 | ||
74ac6d43 TT |
14105 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14106 | offset. If the attribute was not found return 0, otherwise return | |
14107 | 1. If it was found but could not properly be handled, set *OFFSET | |
14108 | to 0. */ | |
14109 | ||
14110 | static int | |
14111 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14112 | LONGEST *offset) | |
14113 | { | |
14114 | struct attribute *attr; | |
14115 | ||
14116 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14117 | if (attr != NULL) | |
14118 | { | |
14119 | *offset = 0; | |
14120 | ||
14121 | /* Note that we do not check for a section offset first here. | |
14122 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14123 | so if we see it, we can assume that a constant form is really | |
14124 | a constant and not a section offset. */ | |
cd6c91b4 | 14125 | if (attr->form_is_constant ()) |
74ac6d43 | 14126 | *offset = dwarf2_get_attr_constant_value (attr, 0); |
cd6c91b4 | 14127 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 14128 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 14129 | else if (attr->form_is_block ()) |
74ac6d43 TT |
14130 | *offset = decode_locdesc (DW_BLOCK (attr), cu); |
14131 | else | |
14132 | dwarf2_complex_location_expr_complaint (); | |
14133 | ||
14134 | return 1; | |
14135 | } | |
14136 | ||
14137 | return 0; | |
14138 | } | |
14139 | ||
c906108c SS |
14140 | /* Add an aggregate field to the field list. */ |
14141 | ||
14142 | static void | |
107d2387 | 14143 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14144 | struct dwarf2_cu *cu) |
6e70227d | 14145 | { |
518817b3 | 14146 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5e2b427d | 14147 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
14148 | struct nextfield *new_field; |
14149 | struct attribute *attr; | |
14150 | struct field *fp; | |
15d034d0 | 14151 | const char *fieldname = ""; |
c906108c | 14152 | |
7d0ccb61 DJ |
14153 | if (die->tag == DW_TAG_inheritance) |
14154 | { | |
be2daae6 TT |
14155 | fip->baseclasses.emplace_back (); |
14156 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
14157 | } |
14158 | else | |
14159 | { | |
be2daae6 TT |
14160 | fip->fields.emplace_back (); |
14161 | new_field = &fip->fields.back (); | |
7d0ccb61 | 14162 | } |
be2daae6 | 14163 | |
c906108c SS |
14164 | fip->nfields++; |
14165 | ||
e142c38c | 14166 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 14167 | if (attr != nullptr) |
c906108c | 14168 | new_field->accessibility = DW_UNSND (attr); |
60d5a603 JK |
14169 | else |
14170 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
14171 | if (new_field->accessibility != DW_ACCESS_public) |
14172 | fip->non_public_fields = 1; | |
60d5a603 | 14173 | |
e142c38c | 14174 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 14175 | if (attr != nullptr) |
c906108c | 14176 | new_field->virtuality = DW_UNSND (attr); |
60d5a603 JK |
14177 | else |
14178 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
14179 | |
14180 | fp = &new_field->field; | |
a9a9bd0f | 14181 | |
e142c38c | 14182 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 14183 | { |
74ac6d43 TT |
14184 | LONGEST offset; |
14185 | ||
a9a9bd0f | 14186 | /* Data member other than a C++ static data member. */ |
6e70227d | 14187 | |
c906108c | 14188 | /* Get type of field. */ |
e7c27a73 | 14189 | fp->type = die_type (die, cu); |
c906108c | 14190 | |
d6a843b5 | 14191 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 14192 | |
c906108c | 14193 | /* Get bit size of field (zero if none). */ |
e142c38c | 14194 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 14195 | if (attr != nullptr) |
c906108c SS |
14196 | { |
14197 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
14198 | } | |
14199 | else | |
14200 | { | |
14201 | FIELD_BITSIZE (*fp) = 0; | |
14202 | } | |
14203 | ||
14204 | /* Get bit offset of field. */ | |
74ac6d43 TT |
14205 | if (handle_data_member_location (die, cu, &offset)) |
14206 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 14207 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
435d3d88 | 14208 | if (attr != nullptr) |
c906108c | 14209 | { |
d5a22e77 | 14210 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
14211 | { |
14212 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
14213 | additional bit offset from the MSB of the containing |
14214 | anonymous object to the MSB of the field. We don't | |
14215 | have to do anything special since we don't need to | |
14216 | know the size of the anonymous object. */ | |
f41f5e61 | 14217 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
14218 | } |
14219 | else | |
14220 | { | |
14221 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
14222 | MSB of the anonymous object, subtract off the number of |
14223 | bits from the MSB of the field to the MSB of the | |
14224 | object, and then subtract off the number of bits of | |
14225 | the field itself. The result is the bit offset of | |
14226 | the LSB of the field. */ | |
c906108c SS |
14227 | int anonymous_size; |
14228 | int bit_offset = DW_UNSND (attr); | |
14229 | ||
e142c38c | 14230 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 14231 | if (attr != nullptr) |
c906108c SS |
14232 | { |
14233 | /* The size of the anonymous object containing | |
14234 | the bit field is explicit, so use the | |
14235 | indicated size (in bytes). */ | |
14236 | anonymous_size = DW_UNSND (attr); | |
14237 | } | |
14238 | else | |
14239 | { | |
14240 | /* The size of the anonymous object containing | |
14241 | the bit field must be inferred from the type | |
14242 | attribute of the data member containing the | |
14243 | bit field. */ | |
14244 | anonymous_size = TYPE_LENGTH (fp->type); | |
14245 | } | |
f41f5e61 PA |
14246 | SET_FIELD_BITPOS (*fp, |
14247 | (FIELD_BITPOS (*fp) | |
14248 | + anonymous_size * bits_per_byte | |
14249 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
14250 | } |
14251 | } | |
da5b30da AA |
14252 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
14253 | if (attr != NULL) | |
14254 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
14255 | + dwarf2_get_attr_constant_value (attr, 0))); | |
c906108c SS |
14256 | |
14257 | /* Get name of field. */ | |
39cbfefa DJ |
14258 | fieldname = dwarf2_name (die, cu); |
14259 | if (fieldname == NULL) | |
14260 | fieldname = ""; | |
d8151005 DJ |
14261 | |
14262 | /* The name is already allocated along with this objfile, so we don't | |
14263 | need to duplicate it for the type. */ | |
14264 | fp->name = fieldname; | |
c906108c SS |
14265 | |
14266 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 14267 | pointer or virtual base class pointer) to private. */ |
e142c38c | 14268 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 14269 | { |
d48cc9dd | 14270 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
14271 | new_field->accessibility = DW_ACCESS_private; |
14272 | fip->non_public_fields = 1; | |
14273 | } | |
14274 | } | |
a9a9bd0f | 14275 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 14276 | { |
a9a9bd0f DC |
14277 | /* C++ static member. */ |
14278 | ||
14279 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
14280 | is a declaration, but all versions of G++ as of this writing | |
14281 | (so through at least 3.2.1) incorrectly generate | |
14282 | DW_TAG_variable tags. */ | |
6e70227d | 14283 | |
ff355380 | 14284 | const char *physname; |
c906108c | 14285 | |
a9a9bd0f | 14286 | /* Get name of field. */ |
39cbfefa DJ |
14287 | fieldname = dwarf2_name (die, cu); |
14288 | if (fieldname == NULL) | |
c906108c SS |
14289 | return; |
14290 | ||
254e6b9e | 14291 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
14292 | if (attr |
14293 | /* Only create a symbol if this is an external value. | |
14294 | new_symbol checks this and puts the value in the global symbol | |
14295 | table, which we want. If it is not external, new_symbol | |
14296 | will try to put the value in cu->list_in_scope which is wrong. */ | |
14297 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
14298 | { |
14299 | /* A static const member, not much different than an enum as far as | |
14300 | we're concerned, except that we can support more types. */ | |
14301 | new_symbol (die, NULL, cu); | |
14302 | } | |
14303 | ||
2df3850c | 14304 | /* Get physical name. */ |
ff355380 | 14305 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 14306 | |
d8151005 DJ |
14307 | /* The name is already allocated along with this objfile, so we don't |
14308 | need to duplicate it for the type. */ | |
14309 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 14310 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 14311 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
14312 | } |
14313 | else if (die->tag == DW_TAG_inheritance) | |
14314 | { | |
74ac6d43 | 14315 | LONGEST offset; |
d4b96c9a | 14316 | |
74ac6d43 TT |
14317 | /* C++ base class field. */ |
14318 | if (handle_data_member_location (die, cu, &offset)) | |
14319 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 14320 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 14321 | FIELD_TYPE (*fp) = die_type (die, cu); |
a737d952 | 14322 | FIELD_NAME (*fp) = TYPE_NAME (fp->type); |
c906108c | 14323 | } |
2ddeaf8a TT |
14324 | else if (die->tag == DW_TAG_variant_part) |
14325 | { | |
14326 | /* process_structure_scope will treat this DIE as a union. */ | |
14327 | process_structure_scope (die, cu); | |
14328 | ||
14329 | /* The variant part is relative to the start of the enclosing | |
14330 | structure. */ | |
14331 | SET_FIELD_BITPOS (*fp, 0); | |
14332 | fp->type = get_die_type (die, cu); | |
14333 | fp->artificial = 1; | |
14334 | fp->name = "<<variant>>"; | |
c8c81635 TT |
14335 | |
14336 | /* Normally a DW_TAG_variant_part won't have a size, but our | |
14337 | representation requires one, so set it to the maximum of the | |
489dbda6 TT |
14338 | child sizes, being sure to account for the offset at which |
14339 | each child is seen. */ | |
c8c81635 TT |
14340 | if (TYPE_LENGTH (fp->type) == 0) |
14341 | { | |
14342 | unsigned max = 0; | |
14343 | for (int i = 0; i < TYPE_NFIELDS (fp->type); ++i) | |
489dbda6 TT |
14344 | { |
14345 | unsigned len = ((TYPE_FIELD_BITPOS (fp->type, i) + 7) / 8 | |
14346 | + TYPE_LENGTH (TYPE_FIELD_TYPE (fp->type, i))); | |
14347 | if (len > max) | |
14348 | max = len; | |
14349 | } | |
c8c81635 TT |
14350 | TYPE_LENGTH (fp->type) = max; |
14351 | } | |
2ddeaf8a TT |
14352 | } |
14353 | else | |
14354 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
14355 | } |
14356 | ||
883fd55a KS |
14357 | /* Can the type given by DIE define another type? */ |
14358 | ||
14359 | static bool | |
14360 | type_can_define_types (const struct die_info *die) | |
14361 | { | |
14362 | switch (die->tag) | |
14363 | { | |
14364 | case DW_TAG_typedef: | |
14365 | case DW_TAG_class_type: | |
14366 | case DW_TAG_structure_type: | |
14367 | case DW_TAG_union_type: | |
14368 | case DW_TAG_enumeration_type: | |
14369 | return true; | |
14370 | ||
14371 | default: | |
14372 | return false; | |
14373 | } | |
14374 | } | |
14375 | ||
14376 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
14377 | |
14378 | static void | |
883fd55a KS |
14379 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
14380 | struct dwarf2_cu *cu) | |
6e70227d | 14381 | { |
be2daae6 TT |
14382 | struct decl_field fp; |
14383 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 14384 | |
883fd55a | 14385 | gdb_assert (type_can_define_types (die)); |
98751a41 | 14386 | |
883fd55a | 14387 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
14388 | fp.name = dwarf2_name (die, cu); |
14389 | fp.type = read_type_die (die, cu); | |
98751a41 | 14390 | |
c191a687 KS |
14391 | /* Save accessibility. */ |
14392 | enum dwarf_access_attribute accessibility; | |
14393 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
14394 | if (attr != NULL) | |
14395 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
14396 | else | |
14397 | accessibility = dwarf2_default_access_attribute (die, cu); | |
14398 | switch (accessibility) | |
14399 | { | |
14400 | case DW_ACCESS_public: | |
14401 | /* The assumed value if neither private nor protected. */ | |
14402 | break; | |
14403 | case DW_ACCESS_private: | |
be2daae6 | 14404 | fp.is_private = 1; |
c191a687 KS |
14405 | break; |
14406 | case DW_ACCESS_protected: | |
be2daae6 | 14407 | fp.is_protected = 1; |
c191a687 KS |
14408 | break; |
14409 | default: | |
b98664d3 | 14410 | complaint (_("Unhandled DW_AT_accessibility value (%x)"), accessibility); |
c191a687 KS |
14411 | } |
14412 | ||
883fd55a | 14413 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 14414 | fip->typedef_field_list.push_back (fp); |
883fd55a | 14415 | else |
be2daae6 | 14416 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
14417 | } |
14418 | ||
c906108c SS |
14419 | /* Create the vector of fields, and attach it to the type. */ |
14420 | ||
14421 | static void | |
fba45db2 | 14422 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 14423 | struct dwarf2_cu *cu) |
c906108c SS |
14424 | { |
14425 | int nfields = fip->nfields; | |
14426 | ||
14427 | /* Record the field count, allocate space for the array of fields, | |
14428 | and create blank accessibility bitfields if necessary. */ | |
14429 | TYPE_NFIELDS (type) = nfields; | |
14430 | TYPE_FIELDS (type) = (struct field *) | |
be2daae6 | 14431 | TYPE_ZALLOC (type, sizeof (struct field) * nfields); |
c906108c | 14432 | |
b4ba55a1 | 14433 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
14434 | { |
14435 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
14436 | ||
14437 | TYPE_FIELD_PRIVATE_BITS (type) = | |
14438 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14439 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
14440 | ||
14441 | TYPE_FIELD_PROTECTED_BITS (type) = | |
14442 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14443 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
14444 | ||
774b6a14 TT |
14445 | TYPE_FIELD_IGNORE_BITS (type) = |
14446 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14447 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
14448 | } |
14449 | ||
14450 | /* If the type has baseclasses, allocate and clear a bit vector for | |
14451 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 14452 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 14453 | { |
be2daae6 | 14454 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 14455 | unsigned char *pointer; |
c906108c SS |
14456 | |
14457 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 14458 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 14459 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
14460 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
14461 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
14462 | } |
14463 | ||
2ddeaf8a TT |
14464 | if (TYPE_FLAG_DISCRIMINATED_UNION (type)) |
14465 | { | |
14466 | struct discriminant_info *di = alloc_discriminant_info (type, -1, -1); | |
14467 | ||
be2daae6 | 14468 | for (int index = 0; index < nfields; ++index) |
2ddeaf8a | 14469 | { |
be2daae6 TT |
14470 | struct nextfield &field = fip->fields[index]; |
14471 | ||
14472 | if (field.variant.is_discriminant) | |
2ddeaf8a | 14473 | di->discriminant_index = index; |
be2daae6 | 14474 | else if (field.variant.default_branch) |
2ddeaf8a TT |
14475 | di->default_index = index; |
14476 | else | |
be2daae6 | 14477 | di->discriminants[index] = field.variant.discriminant_value; |
2ddeaf8a TT |
14478 | } |
14479 | } | |
14480 | ||
be2daae6 TT |
14481 | /* Copy the saved-up fields into the field vector. */ |
14482 | for (int i = 0; i < nfields; ++i) | |
c906108c | 14483 | { |
be2daae6 TT |
14484 | struct nextfield &field |
14485 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
14486 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 14487 | |
be2daae6 TT |
14488 | TYPE_FIELD (type, i) = field.field; |
14489 | switch (field.accessibility) | |
c906108c | 14490 | { |
c5aa993b | 14491 | case DW_ACCESS_private: |
b4ba55a1 | 14492 | if (cu->language != language_ada) |
be2daae6 | 14493 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 14494 | break; |
c906108c | 14495 | |
c5aa993b | 14496 | case DW_ACCESS_protected: |
b4ba55a1 | 14497 | if (cu->language != language_ada) |
be2daae6 | 14498 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 14499 | break; |
c906108c | 14500 | |
c5aa993b JM |
14501 | case DW_ACCESS_public: |
14502 | break; | |
c906108c | 14503 | |
c5aa993b JM |
14504 | default: |
14505 | /* Unknown accessibility. Complain and treat it as public. */ | |
14506 | { | |
b98664d3 | 14507 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 14508 | field.accessibility); |
c5aa993b JM |
14509 | } |
14510 | break; | |
c906108c | 14511 | } |
be2daae6 | 14512 | if (i < fip->baseclasses.size ()) |
c906108c | 14513 | { |
be2daae6 | 14514 | switch (field.virtuality) |
c906108c | 14515 | { |
c5aa993b JM |
14516 | case DW_VIRTUALITY_virtual: |
14517 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 14518 | if (cu->language == language_ada) |
a73c6dcd | 14519 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 14520 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 14521 | break; |
c906108c SS |
14522 | } |
14523 | } | |
c906108c SS |
14524 | } |
14525 | } | |
14526 | ||
7d27a96d TT |
14527 | /* Return true if this member function is a constructor, false |
14528 | otherwise. */ | |
14529 | ||
14530 | static int | |
14531 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
14532 | { | |
14533 | const char *fieldname; | |
fe978cb0 | 14534 | const char *type_name; |
7d27a96d TT |
14535 | int len; |
14536 | ||
14537 | if (die->parent == NULL) | |
14538 | return 0; | |
14539 | ||
14540 | if (die->parent->tag != DW_TAG_structure_type | |
14541 | && die->parent->tag != DW_TAG_union_type | |
14542 | && die->parent->tag != DW_TAG_class_type) | |
14543 | return 0; | |
14544 | ||
14545 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
14546 | type_name = dwarf2_name (die->parent, cu); |
14547 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
14548 | return 0; |
14549 | ||
14550 | len = strlen (fieldname); | |
fe978cb0 PA |
14551 | return (strncmp (fieldname, type_name, len) == 0 |
14552 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
14553 | } |
14554 | ||
e35000a7 TBA |
14555 | /* Check if the given VALUE is a recognized enum |
14556 | dwarf_defaulted_attribute constant according to DWARF5 spec, | |
14557 | Table 7.24. */ | |
14558 | ||
14559 | static bool | |
14560 | is_valid_DW_AT_defaulted (ULONGEST value) | |
14561 | { | |
14562 | switch (value) | |
14563 | { | |
14564 | case DW_DEFAULTED_no: | |
14565 | case DW_DEFAULTED_in_class: | |
14566 | case DW_DEFAULTED_out_of_class: | |
14567 | return true; | |
14568 | } | |
14569 | ||
3142e908 | 14570 | complaint (_("unrecognized DW_AT_defaulted value (%s)"), pulongest (value)); |
e35000a7 TBA |
14571 | return false; |
14572 | } | |
14573 | ||
c906108c SS |
14574 | /* Add a member function to the proper fieldlist. */ |
14575 | ||
14576 | static void | |
107d2387 | 14577 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14578 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 14579 | { |
518817b3 | 14580 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 14581 | struct attribute *attr; |
c906108c | 14582 | int i; |
be2daae6 | 14583 | struct fnfieldlist *flp = nullptr; |
c906108c | 14584 | struct fn_field *fnp; |
15d034d0 | 14585 | const char *fieldname; |
f792889a | 14586 | struct type *this_type; |
60d5a603 | 14587 | enum dwarf_access_attribute accessibility; |
c906108c | 14588 | |
b4ba55a1 | 14589 | if (cu->language == language_ada) |
a73c6dcd | 14590 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 14591 | |
2df3850c | 14592 | /* Get name of member function. */ |
39cbfefa DJ |
14593 | fieldname = dwarf2_name (die, cu); |
14594 | if (fieldname == NULL) | |
2df3850c | 14595 | return; |
c906108c | 14596 | |
c906108c | 14597 | /* Look up member function name in fieldlist. */ |
be2daae6 | 14598 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 14599 | { |
27bfe10e | 14600 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
14601 | { |
14602 | flp = &fip->fnfieldlists[i]; | |
14603 | break; | |
14604 | } | |
c906108c SS |
14605 | } |
14606 | ||
be2daae6 TT |
14607 | /* Create a new fnfieldlist if necessary. */ |
14608 | if (flp == nullptr) | |
c906108c | 14609 | { |
be2daae6 TT |
14610 | fip->fnfieldlists.emplace_back (); |
14611 | flp = &fip->fnfieldlists.back (); | |
c906108c | 14612 | flp->name = fieldname; |
be2daae6 | 14613 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
14614 | } |
14615 | ||
be2daae6 TT |
14616 | /* Create a new member function field and add it to the vector of |
14617 | fnfieldlists. */ | |
14618 | flp->fnfields.emplace_back (); | |
14619 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
14620 | |
14621 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 14622 | if (cu->language == language_cplus) |
be2daae6 TT |
14623 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
14624 | die, cu); | |
3da10d80 KS |
14625 | else |
14626 | { | |
1d06ead6 | 14627 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
14628 | fnp->physname = physname ? physname : ""; |
14629 | } | |
14630 | ||
c906108c | 14631 | fnp->type = alloc_type (objfile); |
f792889a DJ |
14632 | this_type = read_type_die (die, cu); |
14633 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 14634 | { |
f792889a | 14635 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 14636 | |
f792889a | 14637 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
14638 | of the method itself (TYPE_CODE_METHOD). */ |
14639 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
14640 | TYPE_TARGET_TYPE (this_type), |
14641 | TYPE_FIELDS (this_type), | |
14642 | TYPE_NFIELDS (this_type), | |
14643 | TYPE_VARARGS (this_type)); | |
c906108c SS |
14644 | |
14645 | /* Handle static member functions. | |
c5aa993b | 14646 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
14647 | member functions. G++ helps GDB by marking the first |
14648 | parameter for non-static member functions (which is the this | |
14649 | pointer) as artificial. We obtain this information from | |
14650 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 14651 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
14652 | fnp->voffset = VOFFSET_STATIC; |
14653 | } | |
14654 | else | |
b98664d3 | 14655 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 14656 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
14657 | |
14658 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 14659 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 14660 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 14661 | |
3e43a32a MS |
14662 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
14663 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
14664 | |
14665 | /* Get accessibility. */ | |
e142c38c | 14666 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 14667 | if (attr != nullptr) |
aead7601 | 14668 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
14669 | else |
14670 | accessibility = dwarf2_default_access_attribute (die, cu); | |
14671 | switch (accessibility) | |
c906108c | 14672 | { |
60d5a603 JK |
14673 | case DW_ACCESS_private: |
14674 | fnp->is_private = 1; | |
14675 | break; | |
14676 | case DW_ACCESS_protected: | |
14677 | fnp->is_protected = 1; | |
14678 | break; | |
c906108c SS |
14679 | } |
14680 | ||
b02dede2 | 14681 | /* Check for artificial methods. */ |
e142c38c | 14682 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
14683 | if (attr && DW_UNSND (attr) != 0) |
14684 | fnp->is_artificial = 1; | |
14685 | ||
e35000a7 TBA |
14686 | /* Check for defaulted methods. */ |
14687 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
14688 | if (attr != nullptr && is_valid_DW_AT_defaulted (DW_UNSND (attr))) | |
14689 | fnp->defaulted = (enum dwarf_defaulted_attribute) DW_UNSND (attr); | |
14690 | ||
14691 | /* Check for deleted methods. */ | |
14692 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
14693 | if (attr != nullptr && DW_UNSND (attr) != 0) | |
14694 | fnp->is_deleted = 1; | |
14695 | ||
7d27a96d TT |
14696 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
14697 | ||
0d564a31 | 14698 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
14699 | function. For older versions of GCC, this is an offset in the |
14700 | appropriate virtual table, as specified by DW_AT_containing_type. | |
14701 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
14702 | to the object address. */ |
14703 | ||
e142c38c | 14704 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 14705 | if (attr != nullptr) |
8e19ed76 | 14706 | { |
4fc6c0d5 | 14707 | if (attr->form_is_block () && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 14708 | { |
aec5aa8b TT |
14709 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
14710 | { | |
14711 | /* Old-style GCC. */ | |
14712 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
14713 | } | |
14714 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
14715 | || (DW_BLOCK (attr)->size > 1 | |
14716 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
14717 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
14718 | { | |
aec5aa8b TT |
14719 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
14720 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
14721 | dwarf2_complex_location_expr_complaint (); | |
14722 | else | |
14723 | fnp->voffset /= cu->header.addr_size; | |
14724 | fnp->voffset += 2; | |
14725 | } | |
14726 | else | |
14727 | dwarf2_complex_location_expr_complaint (); | |
14728 | ||
14729 | if (!fnp->fcontext) | |
7e993ebf KS |
14730 | { |
14731 | /* If there is no `this' field and no DW_AT_containing_type, | |
14732 | we cannot actually find a base class context for the | |
14733 | vtable! */ | |
14734 | if (TYPE_NFIELDS (this_type) == 0 | |
14735 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
14736 | { | |
b98664d3 | 14737 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
14738 | "function \"%s\" (offset %s)"), |
14739 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
14740 | } |
14741 | else | |
14742 | { | |
14743 | fnp->fcontext | |
14744 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
14745 | } | |
14746 | } | |
aec5aa8b | 14747 | } |
cd6c91b4 | 14748 | else if (attr->form_is_section_offset ()) |
8e19ed76 | 14749 | { |
4d3c2250 | 14750 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
14751 | } |
14752 | else | |
14753 | { | |
4d3c2250 KB |
14754 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
14755 | fieldname); | |
8e19ed76 | 14756 | } |
0d564a31 | 14757 | } |
d48cc9dd DJ |
14758 | else |
14759 | { | |
14760 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
14761 | if (attr && DW_UNSND (attr)) | |
14762 | { | |
14763 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 14764 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 14765 | "but the vtable offset is not specified"), |
9d8780f0 | 14766 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 14767 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
14768 | TYPE_CPLUS_DYNAMIC (type) = 1; |
14769 | } | |
14770 | } | |
c906108c SS |
14771 | } |
14772 | ||
14773 | /* Create the vector of member function fields, and attach it to the type. */ | |
14774 | ||
14775 | static void | |
fba45db2 | 14776 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 14777 | struct dwarf2_cu *cu) |
c906108c | 14778 | { |
b4ba55a1 | 14779 | if (cu->language == language_ada) |
a73c6dcd | 14780 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 14781 | |
c906108c SS |
14782 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
14783 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
14784 | TYPE_ALLOC (type, |
14785 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 14786 | |
be2daae6 | 14787 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 14788 | { |
be2daae6 | 14789 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 14790 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 14791 | |
be2daae6 TT |
14792 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
14793 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 14794 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
14795 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
14796 | ||
14797 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
14798 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
14799 | } |
14800 | ||
be2daae6 | 14801 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
14802 | } |
14803 | ||
1168df01 JB |
14804 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
14805 | language, zero otherwise. */ | |
14806 | static int | |
14807 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
14808 | { | |
14809 | static const char vptr[] = "_vptr"; | |
14810 | ||
9c37b5ae TT |
14811 | /* Look for the C++ form of the vtable. */ |
14812 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
14813 | return 1; |
14814 | ||
14815 | return 0; | |
14816 | } | |
14817 | ||
c0dd20ea | 14818 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
14819 | functions, with the ABI-specified layout. If TYPE describes |
14820 | such a structure, smash it into a member function type. | |
61049d3b DJ |
14821 | |
14822 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
14823 | This is GCC PR debug/28767. */ | |
c0dd20ea | 14824 | |
0b92b5bb TT |
14825 | static void |
14826 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 14827 | { |
09e2d7c7 | 14828 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
14829 | |
14830 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
14831 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
14832 | return; | |
c0dd20ea DJ |
14833 | |
14834 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
14835 | if (TYPE_FIELD_NAME (type, 0) == NULL |
14836 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
14837 | || TYPE_FIELD_NAME (type, 1) == NULL | |
14838 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
14839 | return; | |
c0dd20ea DJ |
14840 | |
14841 | /* Find the type of the method. */ | |
0b92b5bb | 14842 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
14843 | if (pfn_type == NULL |
14844 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
14845 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 14846 | return; |
c0dd20ea DJ |
14847 | |
14848 | /* Look for the "this" argument. */ | |
14849 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
14850 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 14851 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 14852 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 14853 | return; |
c0dd20ea | 14854 | |
09e2d7c7 | 14855 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 14856 | new_type = alloc_type (objfile); |
09e2d7c7 | 14857 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
14858 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
14859 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 14860 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 14861 | } |
1168df01 | 14862 | |
2b4424c3 TT |
14863 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
14864 | appropriate error checking and issuing complaints if there is a | |
14865 | problem. */ | |
14866 | ||
14867 | static ULONGEST | |
14868 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
14869 | { | |
14870 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
14871 | ||
14872 | if (attr == nullptr) | |
14873 | return 0; | |
14874 | ||
cd6c91b4 | 14875 | if (!attr->form_is_constant ()) |
2b4424c3 | 14876 | { |
b98664d3 | 14877 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
14878 | " - DIE at %s [in module %s]"), |
14879 | sect_offset_str (die->sect_off), | |
14880 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
14881 | return 0; | |
14882 | } | |
14883 | ||
14884 | ULONGEST align; | |
14885 | if (attr->form == DW_FORM_sdata) | |
14886 | { | |
14887 | LONGEST val = DW_SND (attr); | |
14888 | if (val < 0) | |
14889 | { | |
b98664d3 | 14890 | complaint (_("DW_AT_alignment value must not be negative" |
2b4424c3 TT |
14891 | " - DIE at %s [in module %s]"), |
14892 | sect_offset_str (die->sect_off), | |
14893 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
14894 | return 0; | |
14895 | } | |
14896 | align = val; | |
14897 | } | |
14898 | else | |
14899 | align = DW_UNSND (attr); | |
14900 | ||
14901 | if (align == 0) | |
14902 | { | |
b98664d3 | 14903 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
14904 | " - DIE at %s [in module %s]"), |
14905 | sect_offset_str (die->sect_off), | |
14906 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
14907 | return 0; | |
14908 | } | |
14909 | if ((align & (align - 1)) != 0) | |
14910 | { | |
b98664d3 | 14911 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
14912 | " - DIE at %s [in module %s]"), |
14913 | sect_offset_str (die->sect_off), | |
14914 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
14915 | return 0; | |
14916 | } | |
14917 | ||
14918 | return align; | |
14919 | } | |
14920 | ||
14921 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
14922 | the alignment for TYPE. */ | |
14923 | ||
14924 | static void | |
14925 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
14926 | struct type *type) | |
14927 | { | |
14928 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 14929 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
14930 | " - DIE at %s [in module %s]"), |
14931 | sect_offset_str (die->sect_off), | |
14932 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
14933 | } | |
685b1105 | 14934 | |
e35000a7 TBA |
14935 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
14936 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
14937 | ||
14938 | static bool | |
14939 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
14940 | { | |
14941 | switch (value) | |
14942 | { | |
14943 | case DW_CC_normal: | |
14944 | case DW_CC_pass_by_reference: | |
14945 | case DW_CC_pass_by_value: | |
14946 | return true; | |
14947 | ||
14948 | default: | |
14949 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 14950 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
14951 | return false; |
14952 | } | |
14953 | } | |
14954 | ||
d0922fcf TBA |
14955 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
14956 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
14957 | also according to GNU-specific values (see include/dwarf2.h). */ | |
14958 | ||
14959 | static bool | |
14960 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
14961 | { | |
14962 | switch (value) | |
14963 | { | |
14964 | case DW_CC_normal: | |
14965 | case DW_CC_program: | |
14966 | case DW_CC_nocall: | |
14967 | return true; | |
14968 | ||
14969 | case DW_CC_GNU_renesas_sh: | |
14970 | case DW_CC_GNU_borland_fastcall_i386: | |
14971 | case DW_CC_GDB_IBM_OpenCL: | |
14972 | return true; | |
14973 | ||
14974 | default: | |
14975 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 14976 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
14977 | return false; |
14978 | } | |
14979 | } | |
14980 | ||
c906108c | 14981 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
14982 | (definition) to create a type for the structure or union. Fill in |
14983 | the type's name and general properties; the members will not be | |
83655187 DE |
14984 | processed until process_structure_scope. A symbol table entry for |
14985 | the type will also not be done until process_structure_scope (assuming | |
14986 | the type has a name). | |
c906108c | 14987 | |
c767944b DJ |
14988 | NOTE: we need to call these functions regardless of whether or not the |
14989 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 14990 | structure or union. This gets the type entered into our set of |
83655187 | 14991 | user defined types. */ |
c906108c | 14992 | |
f792889a | 14993 | static struct type * |
134d01f1 | 14994 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14995 | { |
518817b3 | 14996 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
14997 | struct type *type; |
14998 | struct attribute *attr; | |
15d034d0 | 14999 | const char *name; |
c906108c | 15000 | |
348e048f DE |
15001 | /* If the definition of this type lives in .debug_types, read that type. |
15002 | Don't follow DW_AT_specification though, that will take us back up | |
15003 | the chain and we want to go down. */ | |
45e58e77 | 15004 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
435d3d88 | 15005 | if (attr != nullptr) |
348e048f | 15006 | { |
ac9ec31b | 15007 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15008 | |
ac9ec31b | 15009 | /* The type's CU may not be the same as CU. |
02142a6c | 15010 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15011 | return set_die_type (die, type, cu); |
15012 | } | |
15013 | ||
c0dd20ea | 15014 | type = alloc_type (objfile); |
c906108c | 15015 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15016 | |
39cbfefa DJ |
15017 | name = dwarf2_name (die, cu); |
15018 | if (name != NULL) | |
c906108c | 15019 | { |
987504bb | 15020 | if (cu->language == language_cplus |
c44af4eb TT |
15021 | || cu->language == language_d |
15022 | || cu->language == language_rust) | |
63d06c5c | 15023 | { |
15d034d0 | 15024 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15025 | |
15026 | /* dwarf2_full_name might have already finished building the DIE's | |
15027 | type. If so, there is no need to continue. */ | |
15028 | if (get_die_type (die, cu) != NULL) | |
15029 | return get_die_type (die, cu); | |
15030 | ||
e86ca25f | 15031 | TYPE_NAME (type) = full_name; |
63d06c5c DC |
15032 | } |
15033 | else | |
15034 | { | |
d8151005 DJ |
15035 | /* The name is already allocated along with this objfile, so |
15036 | we don't need to duplicate it for the type. */ | |
e86ca25f | 15037 | TYPE_NAME (type) = name; |
63d06c5c | 15038 | } |
c906108c SS |
15039 | } |
15040 | ||
15041 | if (die->tag == DW_TAG_structure_type) | |
15042 | { | |
15043 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
15044 | } | |
15045 | else if (die->tag == DW_TAG_union_type) | |
15046 | { | |
15047 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15048 | } | |
2ddeaf8a TT |
15049 | else if (die->tag == DW_TAG_variant_part) |
15050 | { | |
15051 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15052 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
15053 | } | |
c906108c SS |
15054 | else |
15055 | { | |
4753d33b | 15056 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
15057 | } |
15058 | ||
0cc2414c TT |
15059 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
15060 | TYPE_DECLARED_CLASS (type) = 1; | |
15061 | ||
e35000a7 TBA |
15062 | /* Store the calling convention in the type if it's available in |
15063 | the die. Otherwise the calling convention remains set to | |
15064 | the default value DW_CC_normal. */ | |
15065 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
15066 | if (attr != nullptr | |
15067 | && is_valid_DW_AT_calling_convention_for_type (DW_UNSND (attr))) | |
15068 | { | |
15069 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15070 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
15071 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
15072 | } | |
15073 | ||
e142c38c | 15074 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15075 | if (attr != nullptr) |
c906108c | 15076 | { |
cd6c91b4 | 15077 | if (attr->form_is_constant ()) |
155bfbd3 JB |
15078 | TYPE_LENGTH (type) = DW_UNSND (attr); |
15079 | else | |
15080 | { | |
15081 | /* For the moment, dynamic type sizes are not supported | |
15082 | by GDB's struct type. The actual size is determined | |
15083 | on-demand when resolving the type of a given object, | |
15084 | so set the type's length to zero for now. Otherwise, | |
15085 | we record an expression as the length, and that expression | |
15086 | could lead to a very large value, which could eventually | |
15087 | lead to us trying to allocate that much memory when creating | |
15088 | a value of that type. */ | |
15089 | TYPE_LENGTH (type) = 0; | |
15090 | } | |
c906108c SS |
15091 | } |
15092 | else | |
15093 | { | |
15094 | TYPE_LENGTH (type) = 0; | |
15095 | } | |
15096 | ||
2b4424c3 TT |
15097 | maybe_set_alignment (cu, die, type); |
15098 | ||
5230b05a | 15099 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15100 | { |
5230b05a WT |
15101 | /* ICC<14 does not output the required DW_AT_declaration on |
15102 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15103 | TYPE_STUB (type) = 1; |
685b1105 JK |
15104 | } |
15105 | else | |
15106 | TYPE_STUB_SUPPORTED (type) = 1; | |
15107 | ||
dc718098 | 15108 | if (die_is_declaration (die, cu)) |
876cecd0 | 15109 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15110 | else if (attr == NULL && die->child == NULL |
15111 | && producer_is_realview (cu->producer)) | |
15112 | /* RealView does not output the required DW_AT_declaration | |
15113 | on incomplete types. */ | |
15114 | TYPE_STUB (type) = 1; | |
dc718098 | 15115 | |
c906108c SS |
15116 | /* We need to add the type field to the die immediately so we don't |
15117 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15118 | type within the structure itself. */ |
1c379e20 | 15119 | set_die_type (die, type, cu); |
c906108c | 15120 | |
7e314c57 JK |
15121 | /* set_die_type should be already done. */ |
15122 | set_descriptive_type (type, die, cu); | |
15123 | ||
c767944b DJ |
15124 | return type; |
15125 | } | |
15126 | ||
2ddeaf8a TT |
15127 | /* A helper for process_structure_scope that handles a single member |
15128 | DIE. */ | |
15129 | ||
15130 | static void | |
15131 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15132 | struct field_info *fi, | |
15133 | std::vector<struct symbol *> *template_args, | |
15134 | struct dwarf2_cu *cu) | |
15135 | { | |
15136 | if (child_die->tag == DW_TAG_member | |
15137 | || child_die->tag == DW_TAG_variable | |
15138 | || child_die->tag == DW_TAG_variant_part) | |
15139 | { | |
15140 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15141 | should be a DW_TAG_member that is a declaration, but | |
15142 | all versions of G++ as of this writing (so through at | |
15143 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15144 | tags for them instead. */ | |
15145 | dwarf2_add_field (fi, child_die, cu); | |
15146 | } | |
15147 | else if (child_die->tag == DW_TAG_subprogram) | |
15148 | { | |
15149 | /* Rust doesn't have member functions in the C++ sense. | |
15150 | However, it does emit ordinary functions as children | |
15151 | of a struct DIE. */ | |
15152 | if (cu->language == language_rust) | |
15153 | read_func_scope (child_die, cu); | |
15154 | else | |
15155 | { | |
15156 | /* C++ member function. */ | |
15157 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
15158 | } | |
15159 | } | |
15160 | else if (child_die->tag == DW_TAG_inheritance) | |
15161 | { | |
15162 | /* C++ base class field. */ | |
15163 | dwarf2_add_field (fi, child_die, cu); | |
15164 | } | |
15165 | else if (type_can_define_types (child_die)) | |
15166 | dwarf2_add_type_defn (fi, child_die, cu); | |
15167 | else if (child_die->tag == DW_TAG_template_type_param | |
15168 | || child_die->tag == DW_TAG_template_value_param) | |
15169 | { | |
15170 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15171 | ||
15172 | if (arg != NULL) | |
15173 | template_args->push_back (arg); | |
15174 | } | |
15175 | else if (child_die->tag == DW_TAG_variant) | |
15176 | { | |
15177 | /* In a variant we want to get the discriminant and also add a | |
15178 | field for our sole member child. */ | |
15179 | struct attribute *discr = dwarf2_attr (child_die, DW_AT_discr_value, cu); | |
15180 | ||
bde09ab7 | 15181 | for (die_info *variant_child = child_die->child; |
2ddeaf8a TT |
15182 | variant_child != NULL; |
15183 | variant_child = sibling_die (variant_child)) | |
15184 | { | |
15185 | if (variant_child->tag == DW_TAG_member) | |
15186 | { | |
15187 | handle_struct_member_die (variant_child, type, fi, | |
15188 | template_args, cu); | |
15189 | /* Only handle the one. */ | |
15190 | break; | |
15191 | } | |
15192 | } | |
15193 | ||
15194 | /* We don't handle this but we might as well report it if we see | |
15195 | it. */ | |
15196 | if (dwarf2_attr (child_die, DW_AT_discr_list, cu) != nullptr) | |
b98664d3 | 15197 | complaint (_("DW_AT_discr_list is not supported yet" |
2ddeaf8a TT |
15198 | " - DIE at %s [in module %s]"), |
15199 | sect_offset_str (child_die->sect_off), | |
15200 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15201 | ||
15202 | /* The first field was just added, so we can stash the | |
15203 | discriminant there. */ | |
be2daae6 | 15204 | gdb_assert (!fi->fields.empty ()); |
2ddeaf8a | 15205 | if (discr == NULL) |
be2daae6 | 15206 | fi->fields.back ().variant.default_branch = true; |
2ddeaf8a | 15207 | else |
be2daae6 | 15208 | fi->fields.back ().variant.discriminant_value = DW_UNSND (discr); |
2ddeaf8a TT |
15209 | } |
15210 | } | |
15211 | ||
c767944b DJ |
15212 | /* Finish creating a structure or union type, including filling in |
15213 | its members and creating a symbol for it. */ | |
15214 | ||
15215 | static void | |
15216 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15217 | { | |
518817b3 | 15218 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
ca040673 | 15219 | struct die_info *child_die; |
c767944b DJ |
15220 | struct type *type; |
15221 | ||
15222 | type = get_die_type (die, cu); | |
15223 | if (type == NULL) | |
15224 | type = read_structure_type (die, cu); | |
15225 | ||
2ddeaf8a TT |
15226 | /* When reading a DW_TAG_variant_part, we need to notice when we |
15227 | read the discriminant member, so we can record it later in the | |
15228 | discriminant_info. */ | |
15229 | bool is_variant_part = TYPE_FLAG_DISCRIMINATED_UNION (type); | |
feee869b | 15230 | sect_offset discr_offset {}; |
3e1d3d8c | 15231 | bool has_template_parameters = false; |
2ddeaf8a TT |
15232 | |
15233 | if (is_variant_part) | |
15234 | { | |
15235 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
15236 | if (discr == NULL) | |
15237 | { | |
15238 | /* Maybe it's a univariant form, an extension we support. | |
15239 | In this case arrange not to check the offset. */ | |
15240 | is_variant_part = false; | |
15241 | } | |
cd6c91b4 | 15242 | else if (discr->form_is_ref ()) |
2ddeaf8a TT |
15243 | { |
15244 | struct dwarf2_cu *target_cu = cu; | |
15245 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
15246 | ||
15247 | discr_offset = target_die->sect_off; | |
15248 | } | |
15249 | else | |
15250 | { | |
b98664d3 | 15251 | complaint (_("DW_AT_discr does not have DIE reference form" |
2ddeaf8a TT |
15252 | " - DIE at %s [in module %s]"), |
15253 | sect_offset_str (die->sect_off), | |
15254 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15255 | is_variant_part = false; | |
15256 | } | |
15257 | } | |
15258 | ||
e142c38c | 15259 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
15260 | { |
15261 | struct field_info fi; | |
2f4732b0 | 15262 | std::vector<struct symbol *> template_args; |
c906108c | 15263 | |
639d11d3 | 15264 | child_die = die->child; |
c906108c SS |
15265 | |
15266 | while (child_die && child_die->tag) | |
15267 | { | |
2ddeaf8a | 15268 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
34eaf542 | 15269 | |
2ddeaf8a | 15270 | if (is_variant_part && discr_offset == child_die->sect_off) |
be2daae6 | 15271 | fi.fields.back ().variant.is_discriminant = true; |
34eaf542 | 15272 | |
c906108c SS |
15273 | child_die = sibling_die (child_die); |
15274 | } | |
15275 | ||
34eaf542 | 15276 | /* Attach template arguments to type. */ |
2f4732b0 | 15277 | if (!template_args.empty ()) |
34eaf542 | 15278 | { |
3e1d3d8c | 15279 | has_template_parameters = true; |
34eaf542 | 15280 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 15281 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 15282 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
15283 | = XOBNEWVEC (&objfile->objfile_obstack, |
15284 | struct symbol *, | |
15285 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 15286 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 15287 | template_args.data (), |
34eaf542 TT |
15288 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
15289 | * sizeof (struct symbol *))); | |
34eaf542 TT |
15290 | } |
15291 | ||
c906108c SS |
15292 | /* Attach fields and member functions to the type. */ |
15293 | if (fi.nfields) | |
e7c27a73 | 15294 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 15295 | if (!fi.fnfieldlists.empty ()) |
c906108c | 15296 | { |
e7c27a73 | 15297 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 15298 | |
c5aa993b | 15299 | /* Get the type which refers to the base class (possibly this |
c906108c | 15300 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
15301 | class from the DW_AT_containing_type attribute. This use of |
15302 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 15303 | |
e142c38c | 15304 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 15305 | { |
e7c27a73 | 15306 | struct type *t = die_containing_type (die, cu); |
c906108c | 15307 | |
ae6ae975 | 15308 | set_type_vptr_basetype (type, t); |
c906108c SS |
15309 | if (type == t) |
15310 | { | |
c906108c SS |
15311 | int i; |
15312 | ||
15313 | /* Our own class provides vtbl ptr. */ | |
15314 | for (i = TYPE_NFIELDS (t) - 1; | |
15315 | i >= TYPE_N_BASECLASSES (t); | |
15316 | --i) | |
15317 | { | |
0d5cff50 | 15318 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 15319 | |
1168df01 | 15320 | if (is_vtable_name (fieldname, cu)) |
c906108c | 15321 | { |
ae6ae975 | 15322 | set_type_vptr_fieldno (type, i); |
c906108c SS |
15323 | break; |
15324 | } | |
15325 | } | |
15326 | ||
15327 | /* Complain if virtual function table field not found. */ | |
15328 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 15329 | complaint (_("virtual function table pointer " |
3e43a32a | 15330 | "not found when defining class '%s'"), |
e86ca25f | 15331 | TYPE_NAME (type) ? TYPE_NAME (type) : ""); |
c906108c SS |
15332 | } |
15333 | else | |
15334 | { | |
ae6ae975 | 15335 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
15336 | } |
15337 | } | |
f6235d4c | 15338 | else if (cu->producer |
61012eef | 15339 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
15340 | { |
15341 | /* The IBM XLC compiler does not provide direct indication | |
15342 | of the containing type, but the vtable pointer is | |
15343 | always named __vfp. */ | |
15344 | ||
15345 | int i; | |
15346 | ||
15347 | for (i = TYPE_NFIELDS (type) - 1; | |
15348 | i >= TYPE_N_BASECLASSES (type); | |
15349 | --i) | |
15350 | { | |
15351 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
15352 | { | |
ae6ae975 DE |
15353 | set_type_vptr_fieldno (type, i); |
15354 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
15355 | break; |
15356 | } | |
15357 | } | |
15358 | } | |
c906108c | 15359 | } |
98751a41 JK |
15360 | |
15361 | /* Copy fi.typedef_field_list linked list elements content into the | |
15362 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 15363 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 15364 | { |
be2daae6 | 15365 | int count = fi.typedef_field_list.size (); |
98751a41 | 15366 | |
a0d7a4ff | 15367 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 15368 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 15369 | = ((struct decl_field *) |
be2daae6 TT |
15370 | TYPE_ALLOC (type, |
15371 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
15372 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 15373 | |
be2daae6 TT |
15374 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
15375 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 15376 | } |
c767944b | 15377 | |
883fd55a KS |
15378 | /* Copy fi.nested_types_list linked list elements content into the |
15379 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 15380 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 15381 | { |
be2daae6 | 15382 | int count = fi.nested_types_list.size (); |
883fd55a KS |
15383 | |
15384 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15385 | TYPE_NESTED_TYPES_ARRAY (type) | |
15386 | = ((struct decl_field *) | |
be2daae6 TT |
15387 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
15388 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 15389 | |
be2daae6 TT |
15390 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
15391 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 15392 | } |
c906108c | 15393 | } |
63d06c5c | 15394 | |
bb5ed363 | 15395 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
15396 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
15397 | cu->rust_unions.push_back (type); | |
0b92b5bb | 15398 | |
90aeadfc DC |
15399 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
15400 | snapshots) has been known to create a die giving a declaration | |
15401 | for a class that has, as a child, a die giving a definition for a | |
15402 | nested class. So we have to process our children even if the | |
15403 | current die is a declaration. Normally, of course, a declaration | |
15404 | won't have any children at all. */ | |
134d01f1 | 15405 | |
ca040673 DE |
15406 | child_die = die->child; |
15407 | ||
90aeadfc DC |
15408 | while (child_die != NULL && child_die->tag) |
15409 | { | |
15410 | if (child_die->tag == DW_TAG_member | |
15411 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
15412 | || child_die->tag == DW_TAG_inheritance |
15413 | || child_die->tag == DW_TAG_template_value_param | |
15414 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 15415 | { |
90aeadfc | 15416 | /* Do nothing. */ |
134d01f1 | 15417 | } |
90aeadfc DC |
15418 | else |
15419 | process_die (child_die, cu); | |
134d01f1 | 15420 | |
90aeadfc | 15421 | child_die = sibling_die (child_die); |
134d01f1 DJ |
15422 | } |
15423 | ||
fa4028e9 JB |
15424 | /* Do not consider external references. According to the DWARF standard, |
15425 | these DIEs are identified by the fact that they have no byte_size | |
15426 | attribute, and a declaration attribute. */ | |
15427 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15428 | || !die_is_declaration (die, cu)) | |
3e1d3d8c TT |
15429 | { |
15430 | struct symbol *sym = new_symbol (die, type, cu); | |
15431 | ||
15432 | if (has_template_parameters) | |
15433 | { | |
a776957c TT |
15434 | struct symtab *symtab; |
15435 | if (sym != nullptr) | |
15436 | symtab = symbol_symtab (sym); | |
15437 | else if (cu->line_header != nullptr) | |
15438 | { | |
15439 | /* Any related symtab will do. */ | |
15440 | symtab | |
7ba99d21 | 15441 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
15442 | } |
15443 | else | |
15444 | { | |
15445 | symtab = nullptr; | |
15446 | complaint (_("could not find suitable " | |
15447 | "symtab for template parameter" | |
15448 | " - DIE at %s [in module %s]"), | |
15449 | sect_offset_str (die->sect_off), | |
15450 | objfile_name (objfile)); | |
15451 | } | |
15452 | ||
15453 | if (symtab != nullptr) | |
15454 | { | |
15455 | /* Make sure that the symtab is set on the new symbols. | |
15456 | Even though they don't appear in this symtab directly, | |
15457 | other parts of gdb assume that symbols do, and this is | |
15458 | reasonably true. */ | |
15459 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
15460 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
15461 | } | |
3e1d3d8c TT |
15462 | } |
15463 | } | |
134d01f1 DJ |
15464 | } |
15465 | ||
55426c9d JB |
15466 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
15467 | update TYPE using some information only available in DIE's children. */ | |
15468 | ||
15469 | static void | |
15470 | update_enumeration_type_from_children (struct die_info *die, | |
15471 | struct type *type, | |
15472 | struct dwarf2_cu *cu) | |
15473 | { | |
60f7655a | 15474 | struct die_info *child_die; |
55426c9d JB |
15475 | int unsigned_enum = 1; |
15476 | int flag_enum = 1; | |
55426c9d | 15477 | |
8268c778 | 15478 | auto_obstack obstack; |
55426c9d | 15479 | |
60f7655a DE |
15480 | for (child_die = die->child; |
15481 | child_die != NULL && child_die->tag; | |
15482 | child_die = sibling_die (child_die)) | |
55426c9d JB |
15483 | { |
15484 | struct attribute *attr; | |
15485 | LONGEST value; | |
15486 | const gdb_byte *bytes; | |
15487 | struct dwarf2_locexpr_baton *baton; | |
15488 | const char *name; | |
60f7655a | 15489 | |
55426c9d JB |
15490 | if (child_die->tag != DW_TAG_enumerator) |
15491 | continue; | |
15492 | ||
15493 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
15494 | if (attr == NULL) | |
15495 | continue; | |
15496 | ||
15497 | name = dwarf2_name (child_die, cu); | |
15498 | if (name == NULL) | |
15499 | name = "<anonymous enumerator>"; | |
15500 | ||
15501 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
15502 | &value, &bytes, &baton); | |
15503 | if (value < 0) | |
15504 | { | |
15505 | unsigned_enum = 0; | |
15506 | flag_enum = 0; | |
15507 | } | |
55426c9d | 15508 | else |
edd45eb0 SM |
15509 | { |
15510 | if (count_one_bits_ll (value) >= 2) | |
15511 | flag_enum = 0; | |
edd45eb0 | 15512 | } |
55426c9d JB |
15513 | |
15514 | /* If we already know that the enum type is neither unsigned, nor | |
15515 | a flag type, no need to look at the rest of the enumerates. */ | |
15516 | if (!unsigned_enum && !flag_enum) | |
15517 | break; | |
55426c9d JB |
15518 | } |
15519 | ||
15520 | if (unsigned_enum) | |
15521 | TYPE_UNSIGNED (type) = 1; | |
15522 | if (flag_enum) | |
15523 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
15524 | } |
15525 | ||
134d01f1 DJ |
15526 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
15527 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 15528 | |
f792889a | 15529 | static struct type * |
134d01f1 | 15530 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15531 | { |
518817b3 | 15532 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 15533 | struct type *type; |
c906108c | 15534 | struct attribute *attr; |
0114d602 | 15535 | const char *name; |
134d01f1 | 15536 | |
348e048f DE |
15537 | /* If the definition of this type lives in .debug_types, read that type. |
15538 | Don't follow DW_AT_specification though, that will take us back up | |
15539 | the chain and we want to go down. */ | |
45e58e77 | 15540 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
435d3d88 | 15541 | if (attr != nullptr) |
348e048f | 15542 | { |
ac9ec31b | 15543 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15544 | |
ac9ec31b | 15545 | /* The type's CU may not be the same as CU. |
02142a6c | 15546 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15547 | return set_die_type (die, type, cu); |
15548 | } | |
15549 | ||
c906108c SS |
15550 | type = alloc_type (objfile); |
15551 | ||
15552 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 15553 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 15554 | if (name != NULL) |
e86ca25f | 15555 | TYPE_NAME (type) = name; |
c906108c | 15556 | |
0626fc76 TT |
15557 | attr = dwarf2_attr (die, DW_AT_type, cu); |
15558 | if (attr != NULL) | |
15559 | { | |
15560 | struct type *underlying_type = die_type (die, cu); | |
15561 | ||
15562 | TYPE_TARGET_TYPE (type) = underlying_type; | |
15563 | } | |
15564 | ||
e142c38c | 15565 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15566 | if (attr != nullptr) |
c906108c SS |
15567 | { |
15568 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
15569 | } | |
15570 | else | |
15571 | { | |
15572 | TYPE_LENGTH (type) = 0; | |
15573 | } | |
15574 | ||
2b4424c3 TT |
15575 | maybe_set_alignment (cu, die, type); |
15576 | ||
137033e9 JB |
15577 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
15578 | declared as private in the package spec, and then defined only | |
15579 | inside the package body. Such types are known as Taft Amendment | |
15580 | Types. When another package uses such a type, an incomplete DIE | |
15581 | may be generated by the compiler. */ | |
02eb380e | 15582 | if (die_is_declaration (die, cu)) |
876cecd0 | 15583 | TYPE_STUB (type) = 1; |
02eb380e | 15584 | |
0626fc76 TT |
15585 | /* Finish the creation of this type by using the enum's children. |
15586 | We must call this even when the underlying type has been provided | |
15587 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
15588 | update_enumeration_type_from_children (die, type, cu); |
15589 | ||
0626fc76 TT |
15590 | /* If this type has an underlying type that is not a stub, then we |
15591 | may use its attributes. We always use the "unsigned" attribute | |
15592 | in this situation, because ordinarily we guess whether the type | |
15593 | is unsigned -- but the guess can be wrong and the underlying type | |
15594 | can tell us the reality. However, we defer to a local size | |
15595 | attribute if one exists, because this lets the compiler override | |
15596 | the underlying type if needed. */ | |
15597 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
15598 | { | |
15599 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
15600 | if (TYPE_LENGTH (type) == 0) | |
15601 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
2b4424c3 TT |
15602 | if (TYPE_RAW_ALIGN (type) == 0 |
15603 | && TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type)) != 0) | |
15604 | set_type_align (type, TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type))); | |
0626fc76 TT |
15605 | } |
15606 | ||
3d567982 TT |
15607 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
15608 | ||
f792889a | 15609 | return set_die_type (die, type, cu); |
134d01f1 DJ |
15610 | } |
15611 | ||
15612 | /* Given a pointer to a die which begins an enumeration, process all | |
15613 | the dies that define the members of the enumeration, and create the | |
15614 | symbol for the enumeration type. | |
15615 | ||
15616 | NOTE: We reverse the order of the element list. */ | |
15617 | ||
15618 | static void | |
15619 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15620 | { | |
f792889a | 15621 | struct type *this_type; |
134d01f1 | 15622 | |
f792889a DJ |
15623 | this_type = get_die_type (die, cu); |
15624 | if (this_type == NULL) | |
15625 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 15626 | |
639d11d3 | 15627 | if (die->child != NULL) |
c906108c | 15628 | { |
9dc481d3 DE |
15629 | struct die_info *child_die; |
15630 | struct symbol *sym; | |
43816ebc | 15631 | std::vector<struct field> fields; |
15d034d0 | 15632 | const char *name; |
9dc481d3 | 15633 | |
639d11d3 | 15634 | child_die = die->child; |
c906108c SS |
15635 | while (child_die && child_die->tag) |
15636 | { | |
15637 | if (child_die->tag != DW_TAG_enumerator) | |
15638 | { | |
e7c27a73 | 15639 | process_die (child_die, cu); |
c906108c SS |
15640 | } |
15641 | else | |
15642 | { | |
39cbfefa DJ |
15643 | name = dwarf2_name (child_die, cu); |
15644 | if (name) | |
c906108c | 15645 | { |
f792889a | 15646 | sym = new_symbol (child_die, this_type, cu); |
c906108c | 15647 | |
43816ebc TT |
15648 | fields.emplace_back (); |
15649 | struct field &field = fields.back (); | |
c906108c | 15650 | |
43816ebc TT |
15651 | FIELD_NAME (field) = sym->linkage_name (); |
15652 | FIELD_TYPE (field) = NULL; | |
15653 | SET_FIELD_ENUMVAL (field, SYMBOL_VALUE (sym)); | |
15654 | FIELD_BITSIZE (field) = 0; | |
c906108c SS |
15655 | } |
15656 | } | |
15657 | ||
15658 | child_die = sibling_die (child_die); | |
15659 | } | |
15660 | ||
43816ebc | 15661 | if (!fields.empty ()) |
c906108c | 15662 | { |
43816ebc | 15663 | TYPE_NFIELDS (this_type) = fields.size (); |
f792889a | 15664 | TYPE_FIELDS (this_type) = (struct field *) |
43816ebc TT |
15665 | TYPE_ALLOC (this_type, sizeof (struct field) * fields.size ()); |
15666 | memcpy (TYPE_FIELDS (this_type), fields.data (), | |
15667 | sizeof (struct field) * fields.size ()); | |
c906108c | 15668 | } |
c906108c | 15669 | } |
134d01f1 | 15670 | |
6c83ed52 TT |
15671 | /* If we are reading an enum from a .debug_types unit, and the enum |
15672 | is a declaration, and the enum is not the signatured type in the | |
15673 | unit, then we do not want to add a symbol for it. Adding a | |
15674 | symbol would in some cases obscure the true definition of the | |
15675 | enum, giving users an incomplete type when the definition is | |
15676 | actually available. Note that we do not want to do this for all | |
15677 | enums which are just declarations, because C++0x allows forward | |
15678 | enum declarations. */ | |
3019eac3 | 15679 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
15680 | && die_is_declaration (die, cu)) |
15681 | { | |
52dc124a | 15682 | struct signatured_type *sig_type; |
6c83ed52 | 15683 | |
c0f78cd4 | 15684 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
15685 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
15686 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
15687 | return; |
15688 | } | |
15689 | ||
f792889a | 15690 | new_symbol (die, this_type, cu); |
c906108c SS |
15691 | } |
15692 | ||
15693 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
15694 | the DIE's type field. For now, this only handles one dimensional | |
15695 | arrays. */ | |
15696 | ||
f792889a | 15697 | static struct type * |
e7c27a73 | 15698 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15699 | { |
518817b3 | 15700 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 15701 | struct die_info *child_die; |
7e314c57 | 15702 | struct type *type; |
c906108c | 15703 | struct type *element_type, *range_type, *index_type; |
c906108c | 15704 | struct attribute *attr; |
15d034d0 | 15705 | const char *name; |
a405673c | 15706 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 15707 | unsigned int bit_stride = 0; |
c906108c | 15708 | |
e7c27a73 | 15709 | element_type = die_type (die, cu); |
c906108c | 15710 | |
7e314c57 JK |
15711 | /* The die_type call above may have already set the type for this DIE. */ |
15712 | type = get_die_type (die, cu); | |
15713 | if (type) | |
15714 | return type; | |
15715 | ||
dc53a7ad JB |
15716 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
15717 | if (attr != NULL) | |
a405673c JB |
15718 | { |
15719 | int stride_ok; | |
09ba997f | 15720 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
a405673c JB |
15721 | |
15722 | byte_stride_prop | |
15723 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
15724 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
15725 | prop_type); | |
a405673c JB |
15726 | if (!stride_ok) |
15727 | { | |
b98664d3 | 15728 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
15729 | " - DIE at %s [in module %s]"), |
15730 | sect_offset_str (die->sect_off), | |
518817b3 | 15731 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a405673c JB |
15732 | /* Ignore this attribute. We will likely not be able to print |
15733 | arrays of this type correctly, but there is little we can do | |
15734 | to help if we cannot read the attribute's value. */ | |
15735 | byte_stride_prop = NULL; | |
15736 | } | |
15737 | } | |
dc53a7ad JB |
15738 | |
15739 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
15740 | if (attr != NULL) | |
15741 | bit_stride = DW_UNSND (attr); | |
15742 | ||
c906108c SS |
15743 | /* Irix 6.2 native cc creates array types without children for |
15744 | arrays with unspecified length. */ | |
639d11d3 | 15745 | if (die->child == NULL) |
c906108c | 15746 | { |
46bf5051 | 15747 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 15748 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 15749 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 15750 | byte_stride_prop, bit_stride); |
f792889a | 15751 | return set_die_type (die, type, cu); |
c906108c SS |
15752 | } |
15753 | ||
791afaa2 | 15754 | std::vector<struct type *> range_types; |
639d11d3 | 15755 | child_die = die->child; |
c906108c SS |
15756 | while (child_die && child_die->tag) |
15757 | { | |
15758 | if (child_die->tag == DW_TAG_subrange_type) | |
15759 | { | |
f792889a | 15760 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 15761 | |
f792889a | 15762 | if (child_type != NULL) |
a02abb62 | 15763 | { |
0963b4bd MS |
15764 | /* The range type was succesfully read. Save it for the |
15765 | array type creation. */ | |
791afaa2 | 15766 | range_types.push_back (child_type); |
a02abb62 | 15767 | } |
c906108c SS |
15768 | } |
15769 | child_die = sibling_die (child_die); | |
15770 | } | |
15771 | ||
15772 | /* Dwarf2 dimensions are output from left to right, create the | |
15773 | necessary array types in backwards order. */ | |
7ca2d3a3 | 15774 | |
c906108c | 15775 | type = element_type; |
7ca2d3a3 DL |
15776 | |
15777 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
15778 | { | |
15779 | int i = 0; | |
9a619af0 | 15780 | |
791afaa2 | 15781 | while (i < range_types.size ()) |
dc53a7ad | 15782 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 15783 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
15784 | } |
15785 | else | |
15786 | { | |
791afaa2 | 15787 | size_t ndim = range_types.size (); |
7ca2d3a3 | 15788 | while (ndim-- > 0) |
dc53a7ad | 15789 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 15790 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 15791 | } |
c906108c | 15792 | |
f5f8a009 EZ |
15793 | /* Understand Dwarf2 support for vector types (like they occur on |
15794 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
15795 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
15796 | custom vendor extension. The main difference between a regular | |
15797 | array and the vector variant is that vectors are passed by value | |
15798 | to functions. */ | |
e142c38c | 15799 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 15800 | if (attr != nullptr) |
ea37ba09 | 15801 | make_vector_type (type); |
f5f8a009 | 15802 | |
dbc98a8b KW |
15803 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
15804 | implementation may choose to implement triple vectors using this | |
15805 | attribute. */ | |
15806 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 15807 | if (attr != nullptr) |
dbc98a8b KW |
15808 | { |
15809 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
15810 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
15811 | else | |
b98664d3 | 15812 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 15813 | "than the total size of elements")); |
dbc98a8b KW |
15814 | } |
15815 | ||
39cbfefa DJ |
15816 | name = dwarf2_name (die, cu); |
15817 | if (name) | |
15818 | TYPE_NAME (type) = name; | |
6e70227d | 15819 | |
2b4424c3 TT |
15820 | maybe_set_alignment (cu, die, type); |
15821 | ||
0963b4bd | 15822 | /* Install the type in the die. */ |
7e314c57 JK |
15823 | set_die_type (die, type, cu); |
15824 | ||
15825 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
15826 | set_descriptive_type (type, die, cu); |
15827 | ||
7e314c57 | 15828 | return type; |
c906108c SS |
15829 | } |
15830 | ||
7ca2d3a3 | 15831 | static enum dwarf_array_dim_ordering |
6e70227d | 15832 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
15833 | { |
15834 | struct attribute *attr; | |
15835 | ||
15836 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
15837 | ||
435d3d88 | 15838 | if (attr != nullptr) |
aead7601 | 15839 | return (enum dwarf_array_dim_ordering) DW_SND (attr); |
7ca2d3a3 | 15840 | |
0963b4bd MS |
15841 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
15842 | opposite order to the dwarf2 specification, but data is still | |
15843 | laid out as per normal fortran. | |
7ca2d3a3 | 15844 | |
0963b4bd MS |
15845 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
15846 | version checking. */ | |
7ca2d3a3 | 15847 | |
905e0470 PM |
15848 | if (cu->language == language_fortran |
15849 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
15850 | { |
15851 | return DW_ORD_row_major; | |
15852 | } | |
15853 | ||
6e70227d | 15854 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
15855 | { |
15856 | case array_column_major: | |
15857 | return DW_ORD_col_major; | |
15858 | case array_row_major: | |
15859 | default: | |
15860 | return DW_ORD_row_major; | |
15861 | }; | |
15862 | } | |
15863 | ||
72019c9c | 15864 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 15865 | the DIE's type field. */ |
72019c9c | 15866 | |
f792889a | 15867 | static struct type * |
72019c9c GM |
15868 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
15869 | { | |
7e314c57 JK |
15870 | struct type *domain_type, *set_type; |
15871 | struct attribute *attr; | |
f792889a | 15872 | |
7e314c57 JK |
15873 | domain_type = die_type (die, cu); |
15874 | ||
15875 | /* The die_type call above may have already set the type for this DIE. */ | |
15876 | set_type = get_die_type (die, cu); | |
15877 | if (set_type) | |
15878 | return set_type; | |
15879 | ||
15880 | set_type = create_set_type (NULL, domain_type); | |
15881 | ||
15882 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 15883 | if (attr != nullptr) |
d09039dd | 15884 | TYPE_LENGTH (set_type) = DW_UNSND (attr); |
7e314c57 | 15885 | |
2b4424c3 TT |
15886 | maybe_set_alignment (cu, die, set_type); |
15887 | ||
f792889a | 15888 | return set_die_type (die, set_type, cu); |
72019c9c | 15889 | } |
7ca2d3a3 | 15890 | |
0971de02 TT |
15891 | /* A helper for read_common_block that creates a locexpr baton. |
15892 | SYM is the symbol which we are marking as computed. | |
15893 | COMMON_DIE is the DIE for the common block. | |
15894 | COMMON_LOC is the location expression attribute for the common | |
15895 | block itself. | |
15896 | MEMBER_LOC is the location expression attribute for the particular | |
15897 | member of the common block that we are processing. | |
15898 | CU is the CU from which the above come. */ | |
15899 | ||
15900 | static void | |
15901 | mark_common_block_symbol_computed (struct symbol *sym, | |
15902 | struct die_info *common_die, | |
15903 | struct attribute *common_loc, | |
15904 | struct attribute *member_loc, | |
15905 | struct dwarf2_cu *cu) | |
15906 | { | |
518817b3 SM |
15907 | struct dwarf2_per_objfile *dwarf2_per_objfile |
15908 | = cu->per_cu->dwarf2_per_objfile; | |
0971de02 TT |
15909 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
15910 | struct dwarf2_locexpr_baton *baton; | |
15911 | gdb_byte *ptr; | |
15912 | unsigned int cu_off; | |
15913 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
15914 | LONGEST offset = 0; | |
15915 | ||
15916 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
15917 | gdb_assert (common_loc->form_is_block ()); |
15918 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 15919 | || member_loc->form_is_constant ()); |
0971de02 | 15920 | |
8d749320 | 15921 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
0971de02 TT |
15922 | baton->per_cu = cu->per_cu; |
15923 | gdb_assert (baton->per_cu); | |
15924 | ||
15925 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
15926 | ||
cd6c91b4 | 15927 | if (member_loc->form_is_constant ()) |
0971de02 TT |
15928 | { |
15929 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
15930 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
15931 | } | |
15932 | else | |
15933 | baton->size += DW_BLOCK (member_loc)->size; | |
15934 | ||
224c3ddb | 15935 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
15936 | baton->data = ptr; |
15937 | ||
15938 | *ptr++ = DW_OP_call4; | |
9c541725 | 15939 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
15940 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
15941 | ptr += 4; | |
15942 | ||
cd6c91b4 | 15943 | if (member_loc->form_is_constant ()) |
0971de02 TT |
15944 | { |
15945 | *ptr++ = DW_OP_addr; | |
15946 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
15947 | ptr += cu->header.addr_size; | |
15948 | } | |
15949 | else | |
15950 | { | |
15951 | /* We have to copy the data here, because DW_OP_call4 will only | |
15952 | use a DW_AT_location attribute. */ | |
15953 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
15954 | ptr += DW_BLOCK (member_loc)->size; | |
15955 | } | |
15956 | ||
15957 | *ptr++ = DW_OP_plus; | |
15958 | gdb_assert (ptr - baton->data == baton->size); | |
15959 | ||
0971de02 | 15960 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 15961 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
15962 | } |
15963 | ||
4357ac6c TT |
15964 | /* Create appropriate locally-scoped variables for all the |
15965 | DW_TAG_common_block entries. Also create a struct common_block | |
15966 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 15967 | is used to separate the common blocks name namespace from regular |
4357ac6c | 15968 | variable names. */ |
c906108c SS |
15969 | |
15970 | static void | |
e7c27a73 | 15971 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15972 | { |
0971de02 TT |
15973 | struct attribute *attr; |
15974 | ||
15975 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 15976 | if (attr != nullptr) |
0971de02 TT |
15977 | { |
15978 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 15979 | if (attr->form_is_block ()) |
0971de02 TT |
15980 | { |
15981 | /* Ok. */ | |
15982 | } | |
cd6c91b4 | 15983 | else if (attr->form_is_section_offset ()) |
0971de02 TT |
15984 | { |
15985 | dwarf2_complex_location_expr_complaint (); | |
15986 | attr = NULL; | |
15987 | } | |
15988 | else | |
15989 | { | |
15990 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
15991 | "common block member"); | |
15992 | attr = NULL; | |
15993 | } | |
15994 | } | |
15995 | ||
639d11d3 | 15996 | if (die->child != NULL) |
c906108c | 15997 | { |
518817b3 | 15998 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
4357ac6c TT |
15999 | struct die_info *child_die; |
16000 | size_t n_entries = 0, size; | |
16001 | struct common_block *common_block; | |
16002 | struct symbol *sym; | |
74ac6d43 | 16003 | |
4357ac6c TT |
16004 | for (child_die = die->child; |
16005 | child_die && child_die->tag; | |
16006 | child_die = sibling_die (child_die)) | |
16007 | ++n_entries; | |
16008 | ||
16009 | size = (sizeof (struct common_block) | |
16010 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
16011 | common_block |
16012 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
16013 | size); | |
4357ac6c TT |
16014 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
16015 | common_block->n_entries = 0; | |
16016 | ||
16017 | for (child_die = die->child; | |
16018 | child_die && child_die->tag; | |
16019 | child_die = sibling_die (child_die)) | |
16020 | { | |
16021 | /* Create the symbol in the DW_TAG_common_block block in the current | |
16022 | symbol scope. */ | |
e7c27a73 | 16023 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
16024 | if (sym != NULL) |
16025 | { | |
16026 | struct attribute *member_loc; | |
16027 | ||
16028 | common_block->contents[common_block->n_entries++] = sym; | |
16029 | ||
16030 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
16031 | cu); | |
16032 | if (member_loc) | |
16033 | { | |
16034 | /* GDB has handled this for a long time, but it is | |
16035 | not specified by DWARF. It seems to have been | |
16036 | emitted by gfortran at least as recently as: | |
16037 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 16038 | complaint (_("Variable in common block has " |
0971de02 | 16039 | "DW_AT_data_member_location " |
9d8780f0 SM |
16040 | "- DIE at %s [in module %s]"), |
16041 | sect_offset_str (child_die->sect_off), | |
518817b3 | 16042 | objfile_name (objfile)); |
0971de02 | 16043 | |
cd6c91b4 | 16044 | if (member_loc->form_is_section_offset ()) |
0971de02 | 16045 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 16046 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 16047 | || member_loc->form_is_block ()) |
0971de02 | 16048 | { |
435d3d88 | 16049 | if (attr != nullptr) |
0971de02 TT |
16050 | mark_common_block_symbol_computed (sym, die, attr, |
16051 | member_loc, cu); | |
16052 | } | |
16053 | else | |
16054 | dwarf2_complex_location_expr_complaint (); | |
16055 | } | |
16056 | } | |
c906108c | 16057 | } |
4357ac6c TT |
16058 | |
16059 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
16060 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
16061 | } |
16062 | } | |
16063 | ||
0114d602 | 16064 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 16065 | |
0114d602 DJ |
16066 | static struct type * |
16067 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 16068 | { |
518817b3 | 16069 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16070 | const char *previous_prefix, *name; |
9219021c | 16071 | int is_anonymous; |
0114d602 DJ |
16072 | struct type *type; |
16073 | ||
16074 | /* For extensions, reuse the type of the original namespace. */ | |
16075 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16076 | { | |
16077 | struct die_info *ext_die; | |
16078 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16079 | |
0114d602 DJ |
16080 | ext_die = dwarf2_extension (die, &ext_cu); |
16081 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16082 | |
16083 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16084 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16085 | return set_die_type (die, type, cu); |
16086 | } | |
9219021c | 16087 | |
e142c38c | 16088 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16089 | |
16090 | /* Now build the name of the current namespace. */ | |
16091 | ||
0114d602 DJ |
16092 | previous_prefix = determine_prefix (die, cu); |
16093 | if (previous_prefix[0] != '\0') | |
16094 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16095 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16096 | |
16097 | /* Create the type. */ | |
19f392bc | 16098 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 16099 | |
60531b24 | 16100 | return set_die_type (die, type, cu); |
0114d602 DJ |
16101 | } |
16102 | ||
22cee43f | 16103 | /* Read a namespace scope. */ |
0114d602 DJ |
16104 | |
16105 | static void | |
16106 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16107 | { | |
518817b3 | 16108 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16109 | int is_anonymous; |
9219021c | 16110 | |
5c4e30ca DC |
16111 | /* Add a symbol associated to this if we haven't seen the namespace |
16112 | before. Also, add a using directive if it's an anonymous | |
16113 | namespace. */ | |
9219021c | 16114 | |
f2f0e013 | 16115 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16116 | { |
16117 | struct type *type; | |
16118 | ||
0114d602 | 16119 | type = read_type_die (die, cu); |
e7c27a73 | 16120 | new_symbol (die, type, cu); |
5c4e30ca | 16121 | |
e8e80198 | 16122 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16123 | if (is_anonymous) |
0114d602 DJ |
16124 | { |
16125 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16126 | |
eb1e02fd | 16127 | std::vector<const char *> excludes; |
804d2729 | 16128 | add_using_directive (using_directives (cu), |
22cee43f | 16129 | previous_prefix, TYPE_NAME (type), NULL, |
eb1e02fd | 16130 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16131 | } |
5c4e30ca | 16132 | } |
9219021c | 16133 | |
639d11d3 | 16134 | if (die->child != NULL) |
d9fa45fe | 16135 | { |
639d11d3 | 16136 | struct die_info *child_die = die->child; |
6e70227d | 16137 | |
d9fa45fe DC |
16138 | while (child_die && child_die->tag) |
16139 | { | |
e7c27a73 | 16140 | process_die (child_die, cu); |
d9fa45fe DC |
16141 | child_die = sibling_die (child_die); |
16142 | } | |
16143 | } | |
38d518c9 EZ |
16144 | } |
16145 | ||
f55ee35c JK |
16146 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16147 | imported module. Still we need that type as local Fortran "use ... only" | |
16148 | declaration imports depend on the created type in determine_prefix. */ | |
16149 | ||
16150 | static struct type * | |
16151 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16152 | { | |
518817b3 | 16153 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
15d034d0 | 16154 | const char *module_name; |
f55ee35c JK |
16155 | struct type *type; |
16156 | ||
16157 | module_name = dwarf2_name (die, cu); | |
19f392bc | 16158 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 16159 | |
f55ee35c JK |
16160 | return set_die_type (die, type, cu); |
16161 | } | |
16162 | ||
5d7cb8df JK |
16163 | /* Read a Fortran module. */ |
16164 | ||
16165 | static void | |
16166 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
16167 | { | |
16168 | struct die_info *child_die = die->child; | |
530e8392 KB |
16169 | struct type *type; |
16170 | ||
16171 | type = read_type_die (die, cu); | |
16172 | new_symbol (die, type, cu); | |
5d7cb8df | 16173 | |
5d7cb8df JK |
16174 | while (child_die && child_die->tag) |
16175 | { | |
16176 | process_die (child_die, cu); | |
16177 | child_die = sibling_die (child_die); | |
16178 | } | |
16179 | } | |
16180 | ||
38d518c9 EZ |
16181 | /* Return the name of the namespace represented by DIE. Set |
16182 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
16183 | namespace. */ | |
16184 | ||
16185 | static const char * | |
e142c38c | 16186 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
16187 | { |
16188 | struct die_info *current_die; | |
16189 | const char *name = NULL; | |
16190 | ||
16191 | /* Loop through the extensions until we find a name. */ | |
16192 | ||
16193 | for (current_die = die; | |
16194 | current_die != NULL; | |
f2f0e013 | 16195 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 16196 | { |
96553a0c DE |
16197 | /* We don't use dwarf2_name here so that we can detect the absence |
16198 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 16199 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 16200 | |
38d518c9 EZ |
16201 | if (name != NULL) |
16202 | break; | |
16203 | } | |
16204 | ||
16205 | /* Is it an anonymous namespace? */ | |
16206 | ||
16207 | *is_anonymous = (name == NULL); | |
16208 | if (*is_anonymous) | |
2b1dbab0 | 16209 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
16210 | |
16211 | return name; | |
d9fa45fe DC |
16212 | } |
16213 | ||
c906108c SS |
16214 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
16215 | the user defined type vector. */ | |
16216 | ||
f792889a | 16217 | static struct type * |
e7c27a73 | 16218 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16219 | { |
518817b3 SM |
16220 | struct gdbarch *gdbarch |
16221 | = get_objfile_arch (cu->per_cu->dwarf2_per_objfile->objfile); | |
e7c27a73 | 16222 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 16223 | struct type *type; |
8b2dbe47 KB |
16224 | struct attribute *attr_byte_size; |
16225 | struct attribute *attr_address_class; | |
16226 | int byte_size, addr_class; | |
7e314c57 JK |
16227 | struct type *target_type; |
16228 | ||
16229 | target_type = die_type (die, cu); | |
c906108c | 16230 | |
7e314c57 JK |
16231 | /* The die_type call above may have already set the type for this DIE. */ |
16232 | type = get_die_type (die, cu); | |
16233 | if (type) | |
16234 | return type; | |
16235 | ||
16236 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 16237 | |
e142c38c | 16238 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
16239 | if (attr_byte_size) |
16240 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 16241 | else |
8b2dbe47 KB |
16242 | byte_size = cu_header->addr_size; |
16243 | ||
e142c38c | 16244 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
16245 | if (attr_address_class) |
16246 | addr_class = DW_UNSND (attr_address_class); | |
16247 | else | |
16248 | addr_class = DW_ADDR_none; | |
16249 | ||
2b4424c3 TT |
16250 | ULONGEST alignment = get_alignment (cu, die); |
16251 | ||
16252 | /* If the pointer size, alignment, or address class is different | |
16253 | than the default, create a type variant marked as such and set | |
16254 | the length accordingly. */ | |
16255 | if (TYPE_LENGTH (type) != byte_size | |
16256 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
16257 | && alignment != TYPE_RAW_ALIGN (type)) | |
16258 | || addr_class != DW_ADDR_none) | |
c906108c | 16259 | { |
5e2b427d | 16260 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
16261 | { |
16262 | int type_flags; | |
16263 | ||
849957d9 | 16264 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 16265 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
16266 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
16267 | == 0); | |
8b2dbe47 KB |
16268 | type = make_type_with_address_space (type, type_flags); |
16269 | } | |
16270 | else if (TYPE_LENGTH (type) != byte_size) | |
16271 | { | |
b98664d3 | 16272 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 16273 | } |
2b4424c3 TT |
16274 | else if (TYPE_RAW_ALIGN (type) != alignment) |
16275 | { | |
b98664d3 | 16276 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
16277 | " - DIE at %s [in module %s]"), |
16278 | sect_offset_str (die->sect_off), | |
16279 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
16280 | } | |
6e70227d | 16281 | else |
9a619af0 MS |
16282 | { |
16283 | /* Should we also complain about unhandled address classes? */ | |
16284 | } | |
c906108c | 16285 | } |
8b2dbe47 KB |
16286 | |
16287 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 16288 | set_type_align (type, alignment); |
f792889a | 16289 | return set_die_type (die, type, cu); |
c906108c SS |
16290 | } |
16291 | ||
16292 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
16293 | the user defined type vector. */ | |
16294 | ||
f792889a | 16295 | static struct type * |
e7c27a73 | 16296 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
16297 | { |
16298 | struct type *type; | |
16299 | struct type *to_type; | |
16300 | struct type *domain; | |
16301 | ||
e7c27a73 DJ |
16302 | to_type = die_type (die, cu); |
16303 | domain = die_containing_type (die, cu); | |
0d5de010 | 16304 | |
7e314c57 JK |
16305 | /* The calls above may have already set the type for this DIE. */ |
16306 | type = get_die_type (die, cu); | |
16307 | if (type) | |
16308 | return type; | |
16309 | ||
0d5de010 DJ |
16310 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
16311 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
16312 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
16313 | { | |
518817b3 SM |
16314 | struct type *new_type |
16315 | = alloc_type (cu->per_cu->dwarf2_per_objfile->objfile); | |
7078baeb TT |
16316 | |
16317 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
16318 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
16319 | TYPE_VARARGS (to_type)); | |
16320 | type = lookup_methodptr_type (new_type); | |
16321 | } | |
0d5de010 DJ |
16322 | else |
16323 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 16324 | |
f792889a | 16325 | return set_die_type (die, type, cu); |
c906108c SS |
16326 | } |
16327 | ||
4297a3f0 | 16328 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
16329 | the user defined type vector. */ |
16330 | ||
f792889a | 16331 | static struct type * |
4297a3f0 AV |
16332 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
16333 | enum type_code refcode) | |
c906108c | 16334 | { |
e7c27a73 | 16335 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 16336 | struct type *type, *target_type; |
c906108c SS |
16337 | struct attribute *attr; |
16338 | ||
4297a3f0 AV |
16339 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
16340 | ||
7e314c57 JK |
16341 | target_type = die_type (die, cu); |
16342 | ||
16343 | /* The die_type call above may have already set the type for this DIE. */ | |
16344 | type = get_die_type (die, cu); | |
16345 | if (type) | |
16346 | return type; | |
16347 | ||
4297a3f0 | 16348 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 16349 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16350 | if (attr != nullptr) |
c906108c SS |
16351 | { |
16352 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16353 | } | |
16354 | else | |
16355 | { | |
107d2387 | 16356 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 16357 | } |
2b4424c3 | 16358 | maybe_set_alignment (cu, die, type); |
f792889a | 16359 | return set_die_type (die, type, cu); |
c906108c SS |
16360 | } |
16361 | ||
cf363f18 MW |
16362 | /* Add the given cv-qualifiers to the element type of the array. GCC |
16363 | outputs DWARF type qualifiers that apply to an array, not the | |
16364 | element type. But GDB relies on the array element type to carry | |
16365 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
16366 | specification. */ | |
16367 | ||
16368 | static struct type * | |
16369 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
16370 | struct type *base_type, int cnst, int voltl) | |
16371 | { | |
16372 | struct type *el_type, *inner_array; | |
16373 | ||
16374 | base_type = copy_type (base_type); | |
16375 | inner_array = base_type; | |
16376 | ||
16377 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
16378 | { | |
16379 | TYPE_TARGET_TYPE (inner_array) = | |
16380 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
16381 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
16382 | } | |
16383 | ||
16384 | el_type = TYPE_TARGET_TYPE (inner_array); | |
16385 | cnst |= TYPE_CONST (el_type); | |
16386 | voltl |= TYPE_VOLATILE (el_type); | |
16387 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
16388 | ||
16389 | return set_die_type (die, base_type, cu); | |
16390 | } | |
16391 | ||
f792889a | 16392 | static struct type * |
e7c27a73 | 16393 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16394 | { |
f792889a | 16395 | struct type *base_type, *cv_type; |
c906108c | 16396 | |
e7c27a73 | 16397 | base_type = die_type (die, cu); |
7e314c57 JK |
16398 | |
16399 | /* The die_type call above may have already set the type for this DIE. */ | |
16400 | cv_type = get_die_type (die, cu); | |
16401 | if (cv_type) | |
16402 | return cv_type; | |
16403 | ||
2f608a3a KW |
16404 | /* In case the const qualifier is applied to an array type, the element type |
16405 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
16406 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 16407 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 16408 | |
f792889a DJ |
16409 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
16410 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16411 | } |
16412 | ||
f792889a | 16413 | static struct type * |
e7c27a73 | 16414 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16415 | { |
f792889a | 16416 | struct type *base_type, *cv_type; |
c906108c | 16417 | |
e7c27a73 | 16418 | base_type = die_type (die, cu); |
7e314c57 JK |
16419 | |
16420 | /* The die_type call above may have already set the type for this DIE. */ | |
16421 | cv_type = get_die_type (die, cu); | |
16422 | if (cv_type) | |
16423 | return cv_type; | |
16424 | ||
cf363f18 MW |
16425 | /* In case the volatile qualifier is applied to an array type, the |
16426 | element type is so qualified, not the array type (section 6.7.3 | |
16427 | of C99). */ | |
16428 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
16429 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
16430 | ||
f792889a DJ |
16431 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
16432 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16433 | } |
16434 | ||
06d66ee9 TT |
16435 | /* Handle DW_TAG_restrict_type. */ |
16436 | ||
16437 | static struct type * | |
16438 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
16439 | { | |
16440 | struct type *base_type, *cv_type; | |
16441 | ||
16442 | base_type = die_type (die, cu); | |
16443 | ||
16444 | /* The die_type call above may have already set the type for this DIE. */ | |
16445 | cv_type = get_die_type (die, cu); | |
16446 | if (cv_type) | |
16447 | return cv_type; | |
16448 | ||
16449 | cv_type = make_restrict_type (base_type); | |
16450 | return set_die_type (die, cv_type, cu); | |
16451 | } | |
16452 | ||
a2c2acaf MW |
16453 | /* Handle DW_TAG_atomic_type. */ |
16454 | ||
16455 | static struct type * | |
16456 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
16457 | { | |
16458 | struct type *base_type, *cv_type; | |
16459 | ||
16460 | base_type = die_type (die, cu); | |
16461 | ||
16462 | /* The die_type call above may have already set the type for this DIE. */ | |
16463 | cv_type = get_die_type (die, cu); | |
16464 | if (cv_type) | |
16465 | return cv_type; | |
16466 | ||
16467 | cv_type = make_atomic_type (base_type); | |
16468 | return set_die_type (die, cv_type, cu); | |
16469 | } | |
16470 | ||
c906108c SS |
16471 | /* Extract all information from a DW_TAG_string_type DIE and add to |
16472 | the user defined type vector. It isn't really a user defined type, | |
16473 | but it behaves like one, with other DIE's using an AT_user_def_type | |
16474 | attribute to reference it. */ | |
16475 | ||
f792889a | 16476 | static struct type * |
e7c27a73 | 16477 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16478 | { |
518817b3 | 16479 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3b7538c0 | 16480 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
16481 | struct type *type, *range_type, *index_type, *char_type; |
16482 | struct attribute *attr; | |
216a7e6b AB |
16483 | struct dynamic_prop prop; |
16484 | bool length_is_constant = true; | |
16485 | LONGEST length; | |
16486 | ||
16487 | /* There are a couple of places where bit sizes might be made use of | |
16488 | when parsing a DW_TAG_string_type, however, no producer that we know | |
16489 | of make use of these. Handling bit sizes that are a multiple of the | |
16490 | byte size is easy enough, but what about other bit sizes? Lets deal | |
16491 | with that problem when we have to. Warn about these attributes being | |
16492 | unsupported, then parse the type and ignore them like we always | |
16493 | have. */ | |
16494 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
16495 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
16496 | { | |
16497 | static bool warning_printed = false; | |
16498 | if (!warning_printed) | |
16499 | { | |
16500 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
16501 | "currently supported on DW_TAG_string_type.")); | |
16502 | warning_printed = true; | |
16503 | } | |
16504 | } | |
c906108c | 16505 | |
e142c38c | 16506 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 16507 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
16508 | { |
16509 | /* The string length describes the location at which the length of | |
16510 | the string can be found. The size of the length field can be | |
16511 | specified with one of the attributes below. */ | |
16512 | struct type *prop_type; | |
16513 | struct attribute *len | |
16514 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
16515 | if (len == nullptr) | |
16516 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 16517 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
16518 | { |
16519 | /* Pass 0 as the default as we know this attribute is constant | |
16520 | and the default value will not be returned. */ | |
16521 | LONGEST sz = dwarf2_get_attr_constant_value (len, 0); | |
09ba997f | 16522 | prop_type = cu->per_cu->int_type (sz, true); |
216a7e6b AB |
16523 | } |
16524 | else | |
16525 | { | |
16526 | /* If the size is not specified then we assume it is the size of | |
16527 | an address on this target. */ | |
09ba997f | 16528 | prop_type = cu->per_cu->addr_sized_int_type (true); |
216a7e6b AB |
16529 | } |
16530 | ||
16531 | /* Convert the attribute into a dynamic property. */ | |
16532 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
16533 | length = 1; | |
16534 | else | |
16535 | length_is_constant = false; | |
16536 | } | |
16537 | else if (attr != nullptr) | |
16538 | { | |
16539 | /* This DW_AT_string_length just contains the length with no | |
16540 | indirection. There's no need to create a dynamic property in this | |
16541 | case. Pass 0 for the default value as we know it will not be | |
16542 | returned in this case. */ | |
16543 | length = dwarf2_get_attr_constant_value (attr, 0); | |
16544 | } | |
16545 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 16546 | { |
216a7e6b AB |
16547 | /* We don't currently support non-constant byte sizes for strings. */ |
16548 | length = dwarf2_get_attr_constant_value (attr, 1); | |
c906108c SS |
16549 | } |
16550 | else | |
16551 | { | |
216a7e6b AB |
16552 | /* Use 1 as a fallback length if we have nothing else. */ |
16553 | length = 1; | |
c906108c | 16554 | } |
6ccb9162 | 16555 | |
46bf5051 | 16556 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
16557 | if (length_is_constant) |
16558 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
16559 | else | |
16560 | { | |
16561 | struct dynamic_prop low_bound; | |
16562 | ||
16563 | low_bound.kind = PROP_CONST; | |
16564 | low_bound.data.const_val = 1; | |
16565 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); | |
16566 | } | |
3b7538c0 UW |
16567 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
16568 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 16569 | |
f792889a | 16570 | return set_die_type (die, type, cu); |
c906108c SS |
16571 | } |
16572 | ||
4d804846 JB |
16573 | /* Assuming that DIE corresponds to a function, returns nonzero |
16574 | if the function is prototyped. */ | |
16575 | ||
16576 | static int | |
16577 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
16578 | { | |
16579 | struct attribute *attr; | |
16580 | ||
16581 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
16582 | if (attr && (DW_UNSND (attr) != 0)) | |
16583 | return 1; | |
16584 | ||
16585 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 16586 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
16587 | languages that allow unprototyped functions (Eg: Objective C). |
16588 | For all other languages, assume that functions are always | |
16589 | prototyped. */ | |
16590 | if (cu->language != language_c | |
16591 | && cu->language != language_objc | |
16592 | && cu->language != language_opencl) | |
16593 | return 1; | |
16594 | ||
16595 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
16596 | prototyped and unprototyped functions; default to prototyped, | |
16597 | since that is more common in modern code (and RealView warns | |
16598 | about unprototyped functions). */ | |
16599 | if (producer_is_realview (cu->producer)) | |
16600 | return 1; | |
16601 | ||
16602 | return 0; | |
16603 | } | |
16604 | ||
c906108c SS |
16605 | /* Handle DIES due to C code like: |
16606 | ||
16607 | struct foo | |
c5aa993b JM |
16608 | { |
16609 | int (*funcp)(int a, long l); | |
16610 | int b; | |
16611 | }; | |
c906108c | 16612 | |
0963b4bd | 16613 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 16614 | |
f792889a | 16615 | static struct type * |
e7c27a73 | 16616 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16617 | { |
518817b3 | 16618 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0963b4bd MS |
16619 | struct type *type; /* Type that this function returns. */ |
16620 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
16621 | struct attribute *attr; |
16622 | ||
e7c27a73 | 16623 | type = die_type (die, cu); |
7e314c57 JK |
16624 | |
16625 | /* The die_type call above may have already set the type for this DIE. */ | |
16626 | ftype = get_die_type (die, cu); | |
16627 | if (ftype) | |
16628 | return ftype; | |
16629 | ||
0c8b41f1 | 16630 | ftype = lookup_function_type (type); |
c906108c | 16631 | |
4d804846 | 16632 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 16633 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 16634 | |
c055b101 CV |
16635 | /* Store the calling convention in the type if it's available in |
16636 | the subroutine die. Otherwise set the calling convention to | |
16637 | the default value DW_CC_normal. */ | |
16638 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf TBA |
16639 | if (attr != nullptr |
16640 | && is_valid_DW_AT_calling_convention_for_subroutine (DW_UNSND (attr))) | |
16641 | TYPE_CALLING_CONVENTION (ftype) | |
16642 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
54fcddd0 UW |
16643 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
16644 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
16645 | else | |
16646 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 16647 | |
743649fd MW |
16648 | /* Record whether the function returns normally to its caller or not |
16649 | if the DWARF producer set that information. */ | |
16650 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
16651 | if (attr && (DW_UNSND (attr) != 0)) | |
16652 | TYPE_NO_RETURN (ftype) = 1; | |
16653 | ||
76c10ea2 GM |
16654 | /* We need to add the subroutine type to the die immediately so |
16655 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 16656 | declared as the same subroutine type. */ |
76c10ea2 | 16657 | set_die_type (die, ftype, cu); |
6e70227d | 16658 | |
639d11d3 | 16659 | if (die->child != NULL) |
c906108c | 16660 | { |
bb5ed363 | 16661 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 16662 | struct die_info *child_die; |
8072405b | 16663 | int nparams, iparams; |
c906108c SS |
16664 | |
16665 | /* Count the number of parameters. | |
16666 | FIXME: GDB currently ignores vararg functions, but knows about | |
16667 | vararg member functions. */ | |
8072405b | 16668 | nparams = 0; |
639d11d3 | 16669 | child_die = die->child; |
c906108c SS |
16670 | while (child_die && child_die->tag) |
16671 | { | |
16672 | if (child_die->tag == DW_TAG_formal_parameter) | |
16673 | nparams++; | |
16674 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 16675 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
16676 | child_die = sibling_die (child_die); |
16677 | } | |
16678 | ||
16679 | /* Allocate storage for parameters and fill them in. */ | |
16680 | TYPE_NFIELDS (ftype) = nparams; | |
16681 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 16682 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 16683 | |
8072405b JK |
16684 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
16685 | even if we error out during the parameters reading below. */ | |
16686 | for (iparams = 0; iparams < nparams; iparams++) | |
16687 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
16688 | ||
16689 | iparams = 0; | |
639d11d3 | 16690 | child_die = die->child; |
c906108c SS |
16691 | while (child_die && child_die->tag) |
16692 | { | |
16693 | if (child_die->tag == DW_TAG_formal_parameter) | |
16694 | { | |
3ce3b1ba PA |
16695 | struct type *arg_type; |
16696 | ||
16697 | /* DWARF version 2 has no clean way to discern C++ | |
16698 | static and non-static member functions. G++ helps | |
16699 | GDB by marking the first parameter for non-static | |
16700 | member functions (which is the this pointer) as | |
16701 | artificial. We pass this information to | |
16702 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
16703 | ||
16704 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
16705 | 4.5 does not yet generate. */ | |
e142c38c | 16706 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 16707 | if (attr != nullptr) |
c906108c SS |
16708 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); |
16709 | else | |
9c37b5ae | 16710 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
16711 | arg_type = die_type (child_die, cu); |
16712 | ||
16713 | /* RealView does not mark THIS as const, which the testsuite | |
16714 | expects. GCC marks THIS as const in method definitions, | |
16715 | but not in the class specifications (GCC PR 43053). */ | |
16716 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
16717 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
16718 | { | |
16719 | int is_this = 0; | |
16720 | struct dwarf2_cu *arg_cu = cu; | |
16721 | const char *name = dwarf2_name (child_die, cu); | |
16722 | ||
16723 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 16724 | if (attr != nullptr) |
3ce3b1ba PA |
16725 | { |
16726 | /* If the compiler emits this, use it. */ | |
16727 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
16728 | is_this = 1; | |
16729 | } | |
16730 | else if (name && strcmp (name, "this") == 0) | |
16731 | /* Function definitions will have the argument names. */ | |
16732 | is_this = 1; | |
16733 | else if (name == NULL && iparams == 0) | |
16734 | /* Declarations may not have the names, so like | |
16735 | elsewhere in GDB, assume an artificial first | |
16736 | argument is "this". */ | |
16737 | is_this = 1; | |
16738 | ||
16739 | if (is_this) | |
16740 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
16741 | arg_type, 0); | |
16742 | } | |
16743 | ||
16744 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
16745 | iparams++; |
16746 | } | |
16747 | child_die = sibling_die (child_die); | |
16748 | } | |
16749 | } | |
16750 | ||
76c10ea2 | 16751 | return ftype; |
c906108c SS |
16752 | } |
16753 | ||
f792889a | 16754 | static struct type * |
e7c27a73 | 16755 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16756 | { |
518817b3 | 16757 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16758 | const char *name = NULL; |
3c8e0968 | 16759 | struct type *this_type, *target_type; |
c906108c | 16760 | |
94af9270 | 16761 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
16762 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
16763 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 16764 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
16765 | target_type = die_type (die, cu); |
16766 | if (target_type != this_type) | |
16767 | TYPE_TARGET_TYPE (this_type) = target_type; | |
16768 | else | |
16769 | { | |
16770 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
16771 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 16772 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
16773 | "- DIE at %s [in module %s]"), |
16774 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
16775 | TYPE_TARGET_TYPE (this_type) = NULL; |
16776 | } | |
f792889a | 16777 | return this_type; |
c906108c SS |
16778 | } |
16779 | ||
9b790ce7 UW |
16780 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
16781 | (which may be different from NAME) to the architecture back-end to allow | |
16782 | it to guess the correct format if necessary. */ | |
16783 | ||
16784 | static struct type * | |
16785 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 16786 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 UW |
16787 | { |
16788 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
16789 | const struct floatformat **format; | |
16790 | struct type *type; | |
16791 | ||
16792 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
16793 | if (format) | |
103a685e | 16794 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 16795 | else |
77b7c781 | 16796 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
16797 | |
16798 | return type; | |
16799 | } | |
16800 | ||
eb77c9df AB |
16801 | /* Allocate an integer type of size BITS and name NAME. */ |
16802 | ||
16803 | static struct type * | |
16804 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
16805 | int bits, int unsigned_p, const char *name) | |
16806 | { | |
16807 | struct type *type; | |
16808 | ||
16809 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
16810 | instead of using DW_TAG_unspecified_type. This has been seen on | |
16811 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
16812 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
16813 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
16814 | type = objfile_type (objfile)->builtin_void; |
16815 | else | |
16816 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
16817 | ||
16818 | return type; | |
16819 | } | |
16820 | ||
8bdc1658 AB |
16821 | /* Initialise and return a floating point type of size BITS suitable for |
16822 | use as a component of a complex number. The NAME_HINT is passed through | |
16823 | when initialising the floating point type and is the name of the complex | |
16824 | type. | |
16825 | ||
16826 | As DWARF doesn't currently provide an explicit name for the components | |
16827 | of a complex number, but it can be helpful to have these components | |
16828 | named, we try to select a suitable name based on the size of the | |
16829 | component. */ | |
16830 | static struct type * | |
16831 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
16832 | struct objfile *objfile, | |
103a685e TT |
16833 | int bits, const char *name_hint, |
16834 | enum bfd_endian byte_order) | |
8bdc1658 AB |
16835 | { |
16836 | gdbarch *gdbarch = get_objfile_arch (objfile); | |
16837 | struct type *tt = nullptr; | |
16838 | ||
35add35e AB |
16839 | /* Try to find a suitable floating point builtin type of size BITS. |
16840 | We're going to use the name of this type as the name for the complex | |
16841 | target type that we are about to create. */ | |
1db455a7 | 16842 | switch (cu->language) |
8bdc1658 | 16843 | { |
1db455a7 AB |
16844 | case language_fortran: |
16845 | switch (bits) | |
16846 | { | |
16847 | case 32: | |
16848 | tt = builtin_f_type (gdbarch)->builtin_real; | |
16849 | break; | |
16850 | case 64: | |
16851 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
16852 | break; | |
16853 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
16854 | case 128: | |
16855 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
16856 | break; | |
16857 | } | |
8bdc1658 | 16858 | break; |
1db455a7 AB |
16859 | default: |
16860 | switch (bits) | |
16861 | { | |
16862 | case 32: | |
16863 | tt = builtin_type (gdbarch)->builtin_float; | |
16864 | break; | |
16865 | case 64: | |
16866 | tt = builtin_type (gdbarch)->builtin_double; | |
16867 | break; | |
16868 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
16869 | case 128: | |
16870 | tt = builtin_type (gdbarch)->builtin_long_double; | |
16871 | break; | |
16872 | } | |
8bdc1658 AB |
16873 | break; |
16874 | } | |
16875 | ||
35add35e AB |
16876 | /* If the type we found doesn't match the size we were looking for, then |
16877 | pretend we didn't find a type at all, the complex target type we | |
16878 | create will then be nameless. */ | |
a12e5744 | 16879 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
16880 | tt = nullptr; |
16881 | ||
8bdc1658 | 16882 | const char *name = (tt == nullptr) ? nullptr : TYPE_NAME (tt); |
103a685e | 16883 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
16884 | } |
16885 | ||
c906108c SS |
16886 | /* Find a representation of a given base type and install |
16887 | it in the TYPE field of the die. */ | |
16888 | ||
f792889a | 16889 | static struct type * |
e7c27a73 | 16890 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16891 | { |
518817b3 | 16892 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
16893 | struct type *type; |
16894 | struct attribute *attr; | |
19f392bc | 16895 | int encoding = 0, bits = 0; |
15d034d0 | 16896 | const char *name; |
34877895 | 16897 | gdbarch *arch; |
c906108c | 16898 | |
e142c38c | 16899 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
435d3d88 | 16900 | if (attr != nullptr) |
34877895 | 16901 | encoding = DW_UNSND (attr); |
e142c38c | 16902 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16903 | if (attr != nullptr) |
34877895 | 16904 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
39cbfefa | 16905 | name = dwarf2_name (die, cu); |
6ccb9162 | 16906 | if (!name) |
34877895 | 16907 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e TT |
16908 | |
16909 | arch = get_objfile_arch (objfile); | |
16910 | enum bfd_endian byte_order = gdbarch_byte_order (arch); | |
16911 | ||
34877895 PJ |
16912 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
16913 | if (attr) | |
103a685e TT |
16914 | { |
16915 | int endianity = DW_UNSND (attr); | |
16916 | ||
16917 | switch (endianity) | |
16918 | { | |
16919 | case DW_END_big: | |
16920 | byte_order = BFD_ENDIAN_BIG; | |
16921 | break; | |
16922 | case DW_END_little: | |
16923 | byte_order = BFD_ENDIAN_LITTLE; | |
16924 | break; | |
16925 | default: | |
16926 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
16927 | break; | |
16928 | } | |
16929 | } | |
6ccb9162 UW |
16930 | |
16931 | switch (encoding) | |
c906108c | 16932 | { |
6ccb9162 UW |
16933 | case DW_ATE_address: |
16934 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 16935 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 16936 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
16937 | break; |
16938 | case DW_ATE_boolean: | |
19f392bc | 16939 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
16940 | break; |
16941 | case DW_ATE_complex_float: | |
103a685e TT |
16942 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
16943 | byte_order); | |
19f392bc | 16944 | type = init_complex_type (objfile, name, type); |
6ccb9162 UW |
16945 | break; |
16946 | case DW_ATE_decimal_float: | |
19f392bc | 16947 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
16948 | break; |
16949 | case DW_ATE_float: | |
103a685e | 16950 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
16951 | break; |
16952 | case DW_ATE_signed: | |
eb77c9df | 16953 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
16954 | break; |
16955 | case DW_ATE_unsigned: | |
3b2b8fea TT |
16956 | if (cu->language == language_fortran |
16957 | && name | |
61012eef | 16958 | && startswith (name, "character(")) |
19f392bc UW |
16959 | type = init_character_type (objfile, bits, 1, name); |
16960 | else | |
eb77c9df | 16961 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
16962 | break; |
16963 | case DW_ATE_signed_char: | |
6e70227d | 16964 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
16965 | || cu->language == language_pascal |
16966 | || cu->language == language_fortran) | |
19f392bc UW |
16967 | type = init_character_type (objfile, bits, 0, name); |
16968 | else | |
eb77c9df | 16969 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
16970 | break; |
16971 | case DW_ATE_unsigned_char: | |
868a0084 | 16972 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 16973 | || cu->language == language_pascal |
c44af4eb TT |
16974 | || cu->language == language_fortran |
16975 | || cu->language == language_rust) | |
19f392bc UW |
16976 | type = init_character_type (objfile, bits, 1, name); |
16977 | else | |
eb77c9df | 16978 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 16979 | break; |
75079b2b | 16980 | case DW_ATE_UTF: |
53e710ac | 16981 | { |
53e710ac PA |
16982 | if (bits == 16) |
16983 | type = builtin_type (arch)->builtin_char16; | |
16984 | else if (bits == 32) | |
16985 | type = builtin_type (arch)->builtin_char32; | |
16986 | else | |
16987 | { | |
b98664d3 | 16988 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 16989 | bits); |
eb77c9df | 16990 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
16991 | } |
16992 | return set_die_type (die, type, cu); | |
16993 | } | |
75079b2b TT |
16994 | break; |
16995 | ||
6ccb9162 | 16996 | default: |
b98664d3 | 16997 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 16998 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 16999 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17000 | break; |
c906108c | 17001 | } |
6ccb9162 | 17002 | |
0114d602 | 17003 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17004 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17005 | |
2b4424c3 TT |
17006 | maybe_set_alignment (cu, die, type); |
17007 | ||
103a685e | 17008 | TYPE_ENDIANITY_NOT_DEFAULT (type) = gdbarch_byte_order (arch) != byte_order; |
34877895 | 17009 | |
f792889a | 17010 | return set_die_type (die, type, cu); |
c906108c SS |
17011 | } |
17012 | ||
80180f79 SA |
17013 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17014 | resulting value of the attribute into struct bound_prop. | |
17015 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17016 | ||
17017 | static int | |
17018 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
17019 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
17020 | struct type *default_type) | |
80180f79 SA |
17021 | { |
17022 | struct dwarf2_property_baton *baton; | |
518817b3 SM |
17023 | struct obstack *obstack |
17024 | = &cu->per_cu->dwarf2_per_objfile->objfile->objfile_obstack; | |
80180f79 | 17025 | |
9a49df9d AB |
17026 | gdb_assert (default_type != NULL); |
17027 | ||
80180f79 SA |
17028 | if (attr == NULL || prop == NULL) |
17029 | return 0; | |
17030 | ||
4fc6c0d5 | 17031 | if (attr->form_is_block ()) |
80180f79 | 17032 | { |
8d749320 | 17033 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17034 | baton->property_type = default_type; |
80180f79 SA |
17035 | baton->locexpr.per_cu = cu->per_cu; |
17036 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
17037 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
216a7e6b AB |
17038 | switch (attr->name) |
17039 | { | |
17040 | case DW_AT_string_length: | |
17041 | baton->locexpr.is_reference = true; | |
17042 | break; | |
17043 | default: | |
17044 | baton->locexpr.is_reference = false; | |
17045 | break; | |
17046 | } | |
80180f79 SA |
17047 | prop->data.baton = baton; |
17048 | prop->kind = PROP_LOCEXPR; | |
17049 | gdb_assert (prop->data.baton != NULL); | |
17050 | } | |
cd6c91b4 | 17051 | else if (attr->form_is_ref ()) |
80180f79 SA |
17052 | { |
17053 | struct dwarf2_cu *target_cu = cu; | |
17054 | struct die_info *target_die; | |
17055 | struct attribute *target_attr; | |
17056 | ||
17057 | target_die = follow_die_ref (die, attr, &target_cu); | |
17058 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17059 | if (target_attr == NULL) |
17060 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17061 | target_cu); | |
80180f79 SA |
17062 | if (target_attr == NULL) |
17063 | return 0; | |
17064 | ||
df25ebbd | 17065 | switch (target_attr->name) |
80180f79 | 17066 | { |
df25ebbd | 17067 | case DW_AT_location: |
cd6c91b4 | 17068 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 17069 | { |
8d749320 | 17070 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17071 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17072 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
17073 | prop->data.baton = baton; | |
17074 | prop->kind = PROP_LOCLIST; | |
17075 | gdb_assert (prop->data.baton != NULL); | |
17076 | } | |
4fc6c0d5 | 17077 | else if (target_attr->form_is_block ()) |
df25ebbd | 17078 | { |
8d749320 | 17079 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17080 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17081 | baton->locexpr.per_cu = cu->per_cu; |
17082 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
17083 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
9a49df9d | 17084 | baton->locexpr.is_reference = true; |
df25ebbd JB |
17085 | prop->data.baton = baton; |
17086 | prop->kind = PROP_LOCEXPR; | |
17087 | gdb_assert (prop->data.baton != NULL); | |
17088 | } | |
17089 | else | |
17090 | { | |
17091 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17092 | "dynamic property"); | |
17093 | return 0; | |
17094 | } | |
17095 | break; | |
17096 | case DW_AT_data_member_location: | |
17097 | { | |
17098 | LONGEST offset; | |
17099 | ||
17100 | if (!handle_data_member_location (target_die, target_cu, | |
17101 | &offset)) | |
17102 | return 0; | |
17103 | ||
8d749320 | 17104 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17105 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 17106 | target_cu); |
df25ebbd JB |
17107 | baton->offset_info.offset = offset; |
17108 | baton->offset_info.type = die_type (target_die, target_cu); | |
17109 | prop->data.baton = baton; | |
17110 | prop->kind = PROP_ADDR_OFFSET; | |
17111 | break; | |
17112 | } | |
80180f79 SA |
17113 | } |
17114 | } | |
cd6c91b4 | 17115 | else if (attr->form_is_constant ()) |
80180f79 SA |
17116 | { |
17117 | prop->data.const_val = dwarf2_get_attr_constant_value (attr, 0); | |
17118 | prop->kind = PROP_CONST; | |
17119 | } | |
17120 | else | |
17121 | { | |
17122 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
17123 | dwarf2_name (die, cu)); | |
17124 | return 0; | |
17125 | } | |
17126 | ||
17127 | return 1; | |
17128 | } | |
17129 | ||
09ba997f | 17130 | /* See read.h. */ |
9a49df9d | 17131 | |
09ba997f TT |
17132 | struct type * |
17133 | dwarf2_per_cu_data::int_type (int size_in_bytes, bool unsigned_p) const | |
9a49df9d | 17134 | { |
09ba997f | 17135 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
9a49df9d AB |
17136 | struct type *int_type; |
17137 | ||
17138 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
17139 | #define TRY_TYPE(F) \ |
17140 | int_type = (unsigned_p \ | |
17141 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
17142 | : objfile_type (objfile)->builtin_ ## F); \ | |
17143 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
17144 | return int_type |
17145 | ||
17146 | TRY_TYPE (char); | |
17147 | TRY_TYPE (short); | |
17148 | TRY_TYPE (int); | |
17149 | TRY_TYPE (long); | |
17150 | TRY_TYPE (long_long); | |
17151 | ||
17152 | #undef TRY_TYPE | |
17153 | ||
17154 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
17155 | } | |
17156 | ||
09ba997f | 17157 | /* See read.h. */ |
11a8b164 | 17158 | |
09ba997f TT |
17159 | struct type * |
17160 | dwarf2_per_cu_data::addr_sized_int_type (bool unsigned_p) const | |
11a8b164 | 17161 | { |
09ba997f TT |
17162 | int addr_size = this->addr_size (); |
17163 | return int_type (addr_size, unsigned_p); | |
11a8b164 AB |
17164 | } |
17165 | ||
b86352cf AB |
17166 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
17167 | present (which is valid) then compute the default type based on the | |
17168 | compilation units address size. */ | |
17169 | ||
17170 | static struct type * | |
17171 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
17172 | { | |
17173 | struct type *index_type = die_type (die, cu); | |
17174 | ||
17175 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
17176 | without specifying a base type. | |
17177 | In that case, the base type must be set to the type of | |
17178 | the lower bound, upper bound or count, in that order, if any of these | |
17179 | three attributes references an object that has a type. | |
17180 | If no base type is found, the Dwarf-2 specifications say that | |
17181 | a signed integer type of size equal to the size of an address should | |
17182 | be used. | |
17183 | For the following C code: `extern char gdb_int [];' | |
17184 | GCC produces an empty range DIE. | |
17185 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
17186 | high bound or count are not yet handled by this code. */ | |
17187 | if (TYPE_CODE (index_type) == TYPE_CODE_VOID) | |
09ba997f | 17188 | index_type = cu->per_cu->addr_sized_int_type (false); |
b86352cf AB |
17189 | |
17190 | return index_type; | |
17191 | } | |
17192 | ||
a02abb62 JB |
17193 | /* Read the given DW_AT_subrange DIE. */ |
17194 | ||
f792889a | 17195 | static struct type * |
a02abb62 JB |
17196 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
17197 | { | |
4c9ad8c2 | 17198 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
17199 | struct type *range_type; |
17200 | struct attribute *attr; | |
729efb13 | 17201 | struct dynamic_prop low, high; |
4fae6e18 | 17202 | int low_default_is_valid; |
c451ebe5 | 17203 | int high_bound_is_count = 0; |
15d034d0 | 17204 | const char *name; |
d359392f | 17205 | ULONGEST negative_mask; |
e77813c8 | 17206 | |
b86352cf AB |
17207 | orig_base_type = read_subrange_index_type (die, cu); |
17208 | ||
4c9ad8c2 TT |
17209 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
17210 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
17211 | creating the range type, but we use the result of check_typedef | |
17212 | when examining properties of the type. */ | |
17213 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 17214 | |
7e314c57 JK |
17215 | /* The die_type call above may have already set the type for this DIE. */ |
17216 | range_type = get_die_type (die, cu); | |
17217 | if (range_type) | |
17218 | return range_type; | |
17219 | ||
729efb13 SA |
17220 | low.kind = PROP_CONST; |
17221 | high.kind = PROP_CONST; | |
17222 | high.data.const_val = 0; | |
17223 | ||
4fae6e18 JK |
17224 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
17225 | omitting DW_AT_lower_bound. */ | |
17226 | switch (cu->language) | |
6e70227d | 17227 | { |
4fae6e18 JK |
17228 | case language_c: |
17229 | case language_cplus: | |
729efb13 | 17230 | low.data.const_val = 0; |
4fae6e18 JK |
17231 | low_default_is_valid = 1; |
17232 | break; | |
17233 | case language_fortran: | |
729efb13 | 17234 | low.data.const_val = 1; |
4fae6e18 JK |
17235 | low_default_is_valid = 1; |
17236 | break; | |
17237 | case language_d: | |
4fae6e18 | 17238 | case language_objc: |
c44af4eb | 17239 | case language_rust: |
729efb13 | 17240 | low.data.const_val = 0; |
4fae6e18 JK |
17241 | low_default_is_valid = (cu->header.version >= 4); |
17242 | break; | |
17243 | case language_ada: | |
17244 | case language_m2: | |
17245 | case language_pascal: | |
729efb13 | 17246 | low.data.const_val = 1; |
4fae6e18 JK |
17247 | low_default_is_valid = (cu->header.version >= 4); |
17248 | break; | |
17249 | default: | |
729efb13 | 17250 | low.data.const_val = 0; |
4fae6e18 JK |
17251 | low_default_is_valid = 0; |
17252 | break; | |
a02abb62 JB |
17253 | } |
17254 | ||
e142c38c | 17255 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 17256 | if (attr != nullptr) |
9a49df9d | 17257 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 17258 | else if (!low_default_is_valid) |
b98664d3 | 17259 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
17260 | "- DIE at %s [in module %s]"), |
17261 | sect_offset_str (die->sect_off), | |
518817b3 | 17262 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a02abb62 | 17263 | |
506f5c41 TV |
17264 | struct attribute *attr_ub, *attr_count; |
17265 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 17266 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 17267 | { |
506f5c41 | 17268 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 17269 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 17270 | { |
c451ebe5 SA |
17271 | /* If bounds are constant do the final calculation here. */ |
17272 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
17273 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
17274 | else | |
17275 | high_bound_is_count = 1; | |
c2ff108b | 17276 | } |
506f5c41 TV |
17277 | else |
17278 | { | |
17279 | if (attr_ub != NULL) | |
17280 | complaint (_("Unresolved DW_AT_upper_bound " | |
17281 | "- DIE at %s [in module %s]"), | |
17282 | sect_offset_str (die->sect_off), | |
17283 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17284 | if (attr_count != NULL) | |
17285 | complaint (_("Unresolved DW_AT_count " | |
17286 | "- DIE at %s [in module %s]"), | |
17287 | sect_offset_str (die->sect_off), | |
17288 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17289 | } | |
e77813c8 | 17290 | } |
a02abb62 | 17291 | |
4e962e74 TT |
17292 | LONGEST bias = 0; |
17293 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 17294 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
4e962e74 TT |
17295 | bias = dwarf2_get_attr_constant_value (bias_attr, 0); |
17296 | ||
dbb9c2b1 JB |
17297 | /* Normally, the DWARF producers are expected to use a signed |
17298 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
17299 | But this is unfortunately not always the case, as witnessed | |
17300 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
17301 | is used instead. To work around that ambiguity, we treat | |
17302 | the bounds as signed, and thus sign-extend their values, when | |
17303 | the base type is signed. */ | |
6e70227d | 17304 | negative_mask = |
d359392f | 17305 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
17306 | if (low.kind == PROP_CONST |
17307 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
17308 | low.data.const_val |= negative_mask; | |
17309 | if (high.kind == PROP_CONST | |
17310 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
17311 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 17312 | |
5bbd8269 AB |
17313 | /* Check for bit and byte strides. */ |
17314 | struct dynamic_prop byte_stride_prop; | |
17315 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
17316 | if (attr_byte_stride != nullptr) | |
17317 | { | |
09ba997f | 17318 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
5bbd8269 AB |
17319 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, |
17320 | prop_type); | |
17321 | } | |
17322 | ||
17323 | struct dynamic_prop bit_stride_prop; | |
17324 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
17325 | if (attr_bit_stride != nullptr) | |
17326 | { | |
17327 | /* It only makes sense to have either a bit or byte stride. */ | |
17328 | if (attr_byte_stride != nullptr) | |
17329 | { | |
17330 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
17331 | "- DIE at %s [in module %s]"), | |
17332 | sect_offset_str (die->sect_off), | |
17333 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17334 | attr_bit_stride = nullptr; | |
17335 | } | |
17336 | else | |
17337 | { | |
09ba997f | 17338 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
5bbd8269 AB |
17339 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, |
17340 | prop_type); | |
17341 | } | |
17342 | } | |
17343 | ||
17344 | if (attr_byte_stride != nullptr | |
17345 | || attr_bit_stride != nullptr) | |
17346 | { | |
17347 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
17348 | struct dynamic_prop *stride | |
17349 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
17350 | ||
17351 | range_type | |
17352 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
17353 | &high, bias, stride, byte_stride_p); | |
17354 | } | |
17355 | else | |
17356 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 17357 | |
c451ebe5 SA |
17358 | if (high_bound_is_count) |
17359 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
17360 | ||
c2ff108b JK |
17361 | /* Ada expects an empty array on no boundary attributes. */ |
17362 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 17363 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 17364 | |
39cbfefa DJ |
17365 | name = dwarf2_name (die, cu); |
17366 | if (name) | |
17367 | TYPE_NAME (range_type) = name; | |
6e70227d | 17368 | |
e142c38c | 17369 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17370 | if (attr != nullptr) |
a02abb62 JB |
17371 | TYPE_LENGTH (range_type) = DW_UNSND (attr); |
17372 | ||
2b4424c3 TT |
17373 | maybe_set_alignment (cu, die, range_type); |
17374 | ||
7e314c57 JK |
17375 | set_die_type (die, range_type, cu); |
17376 | ||
17377 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17378 | set_descriptive_type (range_type, die, cu); |
17379 | ||
7e314c57 | 17380 | return range_type; |
a02abb62 | 17381 | } |
6e70227d | 17382 | |
f792889a | 17383 | static struct type * |
81a17f79 JB |
17384 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
17385 | { | |
17386 | struct type *type; | |
81a17f79 | 17387 | |
518817b3 SM |
17388 | type = init_type (cu->per_cu->dwarf2_per_objfile->objfile, TYPE_CODE_VOID,0, |
17389 | NULL); | |
0114d602 | 17390 | TYPE_NAME (type) = dwarf2_name (die, cu); |
81a17f79 | 17391 | |
74a2f8ff | 17392 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 17393 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
17394 | such a type, we treat it as a stub, and try to resolve it later on, |
17395 | when needed. */ | |
17396 | if (cu->language == language_ada) | |
17397 | TYPE_STUB (type) = 1; | |
17398 | ||
f792889a | 17399 | return set_die_type (die, type, cu); |
81a17f79 | 17400 | } |
a02abb62 | 17401 | |
639d11d3 DC |
17402 | /* Read a single die and all its descendents. Set the die's sibling |
17403 | field to NULL; set other fields in the die correctly, and set all | |
17404 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
17405 | location of the info_ptr after reading all of those dies. PARENT | |
17406 | is the parent of the die in question. */ | |
17407 | ||
17408 | static struct die_info * | |
dee91e82 | 17409 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
17410 | const gdb_byte *info_ptr, |
17411 | const gdb_byte **new_info_ptr, | |
dee91e82 | 17412 | struct die_info *parent) |
639d11d3 DC |
17413 | { |
17414 | struct die_info *die; | |
d521ce57 | 17415 | const gdb_byte *cur_ptr; |
639d11d3 | 17416 | |
3e225074 | 17417 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, 0); |
1d325ec1 DJ |
17418 | if (die == NULL) |
17419 | { | |
17420 | *new_info_ptr = cur_ptr; | |
17421 | return NULL; | |
17422 | } | |
93311388 | 17423 | store_in_ref_table (die, reader->cu); |
639d11d3 | 17424 | |
3e225074 | 17425 | if (die->has_children) |
bf6af496 | 17426 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
17427 | else |
17428 | { | |
17429 | die->child = NULL; | |
17430 | *new_info_ptr = cur_ptr; | |
17431 | } | |
17432 | ||
17433 | die->sibling = NULL; | |
17434 | die->parent = parent; | |
17435 | return die; | |
17436 | } | |
17437 | ||
17438 | /* Read a die, all of its descendents, and all of its siblings; set | |
17439 | all of the fields of all of the dies correctly. Arguments are as | |
17440 | in read_die_and_children. */ | |
17441 | ||
17442 | static struct die_info * | |
bf6af496 | 17443 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
17444 | const gdb_byte *info_ptr, |
17445 | const gdb_byte **new_info_ptr, | |
bf6af496 | 17446 | struct die_info *parent) |
639d11d3 DC |
17447 | { |
17448 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 17449 | const gdb_byte *cur_ptr; |
639d11d3 | 17450 | |
c906108c | 17451 | cur_ptr = info_ptr; |
639d11d3 DC |
17452 | first_die = last_sibling = NULL; |
17453 | ||
17454 | while (1) | |
c906108c | 17455 | { |
639d11d3 | 17456 | struct die_info *die |
dee91e82 | 17457 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 17458 | |
1d325ec1 | 17459 | if (die == NULL) |
c906108c | 17460 | { |
639d11d3 DC |
17461 | *new_info_ptr = cur_ptr; |
17462 | return first_die; | |
c906108c | 17463 | } |
1d325ec1 DJ |
17464 | |
17465 | if (!first_die) | |
17466 | first_die = die; | |
c906108c | 17467 | else |
1d325ec1 DJ |
17468 | last_sibling->sibling = die; |
17469 | ||
17470 | last_sibling = die; | |
c906108c | 17471 | } |
c906108c SS |
17472 | } |
17473 | ||
bf6af496 DE |
17474 | /* Read a die, all of its descendents, and all of its siblings; set |
17475 | all of the fields of all of the dies correctly. Arguments are as | |
17476 | in read_die_and_children. | |
17477 | This the main entry point for reading a DIE and all its children. */ | |
17478 | ||
17479 | static struct die_info * | |
17480 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
17481 | const gdb_byte *info_ptr, |
17482 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
17483 | struct die_info *parent) |
17484 | { | |
17485 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
17486 | new_info_ptr, parent); | |
17487 | ||
b4f54984 | 17488 | if (dwarf_die_debug) |
bf6af496 DE |
17489 | { |
17490 | fprintf_unfiltered (gdb_stdlog, | |
17491 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 17492 | reader->die_section->get_name (), |
bf6af496 DE |
17493 | (unsigned) (info_ptr - reader->die_section->buffer), |
17494 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 17495 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
17496 | } |
17497 | ||
17498 | return die; | |
17499 | } | |
17500 | ||
3019eac3 DE |
17501 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
17502 | attributes. | |
17503 | The caller is responsible for filling in the extra attributes | |
17504 | and updating (*DIEP)->num_attrs. | |
17505 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 17506 | except for its child, sibling, and parent fields. */ |
93311388 | 17507 | |
d521ce57 | 17508 | static const gdb_byte * |
3019eac3 | 17509 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 17510 | struct die_info **diep, const gdb_byte *info_ptr, |
3e225074 | 17511 | int num_extra_attrs) |
93311388 | 17512 | { |
b64f50a1 | 17513 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
17514 | struct abbrev_info *abbrev; |
17515 | struct die_info *die; | |
17516 | struct dwarf2_cu *cu = reader->cu; | |
17517 | bfd *abfd = reader->abfd; | |
17518 | ||
9c541725 | 17519 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
17520 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
17521 | info_ptr += bytes_read; | |
17522 | if (!abbrev_number) | |
17523 | { | |
17524 | *diep = NULL; | |
93311388 DE |
17525 | return info_ptr; |
17526 | } | |
17527 | ||
685af9cd | 17528 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 17529 | if (!abbrev) |
348e048f DE |
17530 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
17531 | abbrev_number, | |
17532 | bfd_get_filename (abfd)); | |
17533 | ||
3019eac3 | 17534 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 17535 | die->sect_off = sect_off; |
93311388 DE |
17536 | die->tag = abbrev->tag; |
17537 | die->abbrev = abbrev_number; | |
3e225074 | 17538 | die->has_children = abbrev->has_children; |
93311388 | 17539 | |
3019eac3 DE |
17540 | /* Make the result usable. |
17541 | The caller needs to update num_attrs after adding the extra | |
17542 | attributes. */ | |
93311388 DE |
17543 | die->num_attrs = abbrev->num_attrs; |
17544 | ||
18a8505e | 17545 | std::vector<int> indexes_that_need_reprocess; |
93311388 | 17546 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e AT |
17547 | { |
17548 | bool need_reprocess; | |
17549 | info_ptr = | |
17550 | read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], | |
17551 | info_ptr, &need_reprocess); | |
17552 | if (need_reprocess) | |
17553 | indexes_that_need_reprocess.push_back (i); | |
17554 | } | |
17555 | ||
17556 | struct attribute *attr = dwarf2_attr_no_follow (die, DW_AT_str_offsets_base); | |
17557 | if (attr != nullptr) | |
17558 | cu->str_offsets_base = DW_UNSND (attr); | |
93311388 | 17559 | |
18a8505e AT |
17560 | auto maybe_addr_base = lookup_addr_base(die); |
17561 | if (maybe_addr_base.has_value ()) | |
17562 | cu->addr_base = *maybe_addr_base; | |
17563 | for (int index : indexes_that_need_reprocess) | |
17564 | read_attribute_reprocess (reader, &die->attrs[index]); | |
93311388 | 17565 | *diep = die; |
93311388 DE |
17566 | return info_ptr; |
17567 | } | |
17568 | ||
3019eac3 DE |
17569 | /* Read a die and all its attributes. |
17570 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 17571 | except for its child, sibling, and parent fields. */ |
3019eac3 | 17572 | |
d521ce57 | 17573 | static const gdb_byte * |
3019eac3 | 17574 | read_full_die (const struct die_reader_specs *reader, |
3e225074 | 17575 | struct die_info **diep, const gdb_byte *info_ptr) |
3019eac3 | 17576 | { |
d521ce57 | 17577 | const gdb_byte *result; |
bf6af496 | 17578 | |
3e225074 | 17579 | result = read_full_die_1 (reader, diep, info_ptr, 0); |
bf6af496 | 17580 | |
b4f54984 | 17581 | if (dwarf_die_debug) |
bf6af496 DE |
17582 | { |
17583 | fprintf_unfiltered (gdb_stdlog, | |
17584 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 17585 | reader->die_section->get_name (), |
bf6af496 DE |
17586 | (unsigned) (info_ptr - reader->die_section->buffer), |
17587 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 17588 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
17589 | } |
17590 | ||
17591 | return result; | |
3019eac3 | 17592 | } |
433df2d4 | 17593 | \f |
c906108c | 17594 | |
72bf9492 DJ |
17595 | /* Returns nonzero if TAG represents a type that we might generate a partial |
17596 | symbol for. */ | |
17597 | ||
17598 | static int | |
17599 | is_type_tag_for_partial (int tag) | |
17600 | { | |
17601 | switch (tag) | |
17602 | { | |
17603 | #if 0 | |
17604 | /* Some types that would be reasonable to generate partial symbols for, | |
17605 | that we don't at present. */ | |
17606 | case DW_TAG_array_type: | |
17607 | case DW_TAG_file_type: | |
17608 | case DW_TAG_ptr_to_member_type: | |
17609 | case DW_TAG_set_type: | |
17610 | case DW_TAG_string_type: | |
17611 | case DW_TAG_subroutine_type: | |
17612 | #endif | |
17613 | case DW_TAG_base_type: | |
17614 | case DW_TAG_class_type: | |
680b30c7 | 17615 | case DW_TAG_interface_type: |
72bf9492 DJ |
17616 | case DW_TAG_enumeration_type: |
17617 | case DW_TAG_structure_type: | |
17618 | case DW_TAG_subrange_type: | |
17619 | case DW_TAG_typedef: | |
17620 | case DW_TAG_union_type: | |
17621 | return 1; | |
17622 | default: | |
17623 | return 0; | |
17624 | } | |
17625 | } | |
17626 | ||
17627 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
17628 | ||
17629 | static struct partial_die_info * | |
dee91e82 | 17630 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 17631 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 17632 | { |
dee91e82 | 17633 | struct dwarf2_cu *cu = reader->cu; |
518817b3 | 17634 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
72bf9492 | 17635 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 17636 | unsigned int bytes_read; |
5afb4e99 | 17637 | unsigned int load_all = 0; |
72bf9492 DJ |
17638 | int nesting_level = 1; |
17639 | ||
17640 | parent_die = NULL; | |
17641 | last_die = NULL; | |
17642 | ||
7adf1e79 DE |
17643 | gdb_assert (cu->per_cu != NULL); |
17644 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
17645 | load_all = 1; |
17646 | ||
72bf9492 DJ |
17647 | cu->partial_dies |
17648 | = htab_create_alloc_ex (cu->header.length / 12, | |
17649 | partial_die_hash, | |
17650 | partial_die_eq, | |
17651 | NULL, | |
17652 | &cu->comp_unit_obstack, | |
17653 | hashtab_obstack_allocate, | |
17654 | dummy_obstack_deallocate); | |
17655 | ||
72bf9492 DJ |
17656 | while (1) |
17657 | { | |
685af9cd | 17658 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
17659 | |
17660 | /* A NULL abbrev means the end of a series of children. */ | |
17661 | if (abbrev == NULL) | |
17662 | { | |
17663 | if (--nesting_level == 0) | |
cd9983dd YQ |
17664 | return first_die; |
17665 | ||
72bf9492 DJ |
17666 | info_ptr += bytes_read; |
17667 | last_die = parent_die; | |
17668 | parent_die = parent_die->die_parent; | |
17669 | continue; | |
17670 | } | |
17671 | ||
98bfdba5 PA |
17672 | /* Check for template arguments. We never save these; if |
17673 | they're seen, we just mark the parent, and go on our way. */ | |
17674 | if (parent_die != NULL | |
17675 | && cu->language == language_cplus | |
17676 | && (abbrev->tag == DW_TAG_template_type_param | |
17677 | || abbrev->tag == DW_TAG_template_value_param)) | |
17678 | { | |
17679 | parent_die->has_template_arguments = 1; | |
17680 | ||
17681 | if (!load_all) | |
17682 | { | |
17683 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 17684 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
17685 | continue; |
17686 | } | |
17687 | } | |
17688 | ||
0d99eb77 | 17689 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
17690 | Skip their other children. */ |
17691 | if (!load_all | |
17692 | && cu->language == language_cplus | |
17693 | && parent_die != NULL | |
17694 | && parent_die->tag == DW_TAG_subprogram) | |
17695 | { | |
dee91e82 | 17696 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
17697 | continue; |
17698 | } | |
17699 | ||
5afb4e99 DJ |
17700 | /* Check whether this DIE is interesting enough to save. Normally |
17701 | we would not be interested in members here, but there may be | |
17702 | later variables referencing them via DW_AT_specification (for | |
17703 | static members). */ | |
17704 | if (!load_all | |
17705 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 17706 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
17707 | && abbrev->tag != DW_TAG_enumerator |
17708 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 17709 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 17710 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 17711 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 17712 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 17713 | && abbrev->tag != DW_TAG_module |
95554aad | 17714 | && abbrev->tag != DW_TAG_member |
74921315 KS |
17715 | && abbrev->tag != DW_TAG_imported_unit |
17716 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
17717 | { |
17718 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 17719 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
17720 | continue; |
17721 | } | |
17722 | ||
6f06d47b YQ |
17723 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
17724 | abbrev); | |
cd9983dd | 17725 | |
48fbe735 | 17726 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
17727 | |
17728 | /* This two-pass algorithm for processing partial symbols has a | |
17729 | high cost in cache pressure. Thus, handle some simple cases | |
17730 | here which cover the majority of C partial symbols. DIEs | |
17731 | which neither have specification tags in them, nor could have | |
17732 | specification tags elsewhere pointing at them, can simply be | |
17733 | processed and discarded. | |
17734 | ||
17735 | This segment is also optional; scan_partial_symbols and | |
17736 | add_partial_symbol will handle these DIEs if we chain | |
17737 | them in normally. When compilers which do not emit large | |
17738 | quantities of duplicate debug information are more common, | |
17739 | this code can probably be removed. */ | |
17740 | ||
17741 | /* Any complete simple types at the top level (pretty much all | |
17742 | of them, for a language without namespaces), can be processed | |
17743 | directly. */ | |
17744 | if (parent_die == NULL | |
cd9983dd YQ |
17745 | && pdi.has_specification == 0 |
17746 | && pdi.is_declaration == 0 | |
17747 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
17748 | || pdi.tag == DW_TAG_base_type | |
17749 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 17750 | { |
cd9983dd | 17751 | if (building_psymtab && pdi.name != NULL) |
31edb802 | 17752 | add_psymbol_to_list (pdi.name, false, |
79748972 | 17753 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 17754 | psymbol_placement::STATIC, |
1762568f | 17755 | 0, cu->language, objfile); |
cd9983dd | 17756 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
17757 | continue; |
17758 | } | |
17759 | ||
d8228535 JK |
17760 | /* The exception for DW_TAG_typedef with has_children above is |
17761 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 17762 | type_name_or_error will error on such types later. |
d8228535 JK |
17763 | |
17764 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
17765 | it could not find the child DIEs referenced later, this is checked | |
17766 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
17767 | ||
cd9983dd | 17768 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 17769 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 17770 | "- DIE at %s [in module %s]"), |
cd9983dd | 17771 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 17772 | |
72bf9492 DJ |
17773 | /* If we're at the second level, and we're an enumerator, and |
17774 | our parent has no specification (meaning possibly lives in a | |
17775 | namespace elsewhere), then we can add the partial symbol now | |
17776 | instead of queueing it. */ | |
cd9983dd | 17777 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
17778 | && parent_die != NULL |
17779 | && parent_die->die_parent == NULL | |
17780 | && parent_die->tag == DW_TAG_enumeration_type | |
17781 | && parent_die->has_specification == 0) | |
17782 | { | |
cd9983dd | 17783 | if (pdi.name == NULL) |
b98664d3 | 17784 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 17785 | else if (building_psymtab) |
31edb802 | 17786 | add_psymbol_to_list (pdi.name, false, |
79748972 | 17787 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 17788 | cu->language == language_cplus |
75aedd27 TT |
17789 | ? psymbol_placement::GLOBAL |
17790 | : psymbol_placement::STATIC, | |
1762568f | 17791 | 0, cu->language, objfile); |
72bf9492 | 17792 | |
cd9983dd | 17793 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
17794 | continue; |
17795 | } | |
17796 | ||
cd9983dd | 17797 | struct partial_die_info *part_die |
6f06d47b | 17798 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 17799 | |
72bf9492 DJ |
17800 | /* We'll save this DIE so link it in. */ |
17801 | part_die->die_parent = parent_die; | |
17802 | part_die->die_sibling = NULL; | |
17803 | part_die->die_child = NULL; | |
17804 | ||
17805 | if (last_die && last_die == parent_die) | |
17806 | last_die->die_child = part_die; | |
17807 | else if (last_die) | |
17808 | last_die->die_sibling = part_die; | |
17809 | ||
17810 | last_die = part_die; | |
17811 | ||
17812 | if (first_die == NULL) | |
17813 | first_die = part_die; | |
17814 | ||
17815 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
17816 | find interesting need to be in the hash table, because we | |
17817 | also have the parent/sibling/child chains; only those that we | |
17818 | might refer to by offset later during partial symbol reading. | |
17819 | ||
17820 | For now this means things that might have be the target of a | |
17821 | DW_AT_specification, DW_AT_abstract_origin, or | |
17822 | DW_AT_extension. DW_AT_extension will refer only to | |
17823 | namespaces; DW_AT_abstract_origin refers to functions (and | |
17824 | many things under the function DIE, but we do not recurse | |
17825 | into function DIEs during partial symbol reading) and | |
17826 | possibly variables as well; DW_AT_specification refers to | |
17827 | declarations. Declarations ought to have the DW_AT_declaration | |
17828 | flag. It happens that GCC forgets to put it in sometimes, but | |
17829 | only for functions, not for types. | |
17830 | ||
17831 | Adding more things than necessary to the hash table is harmless | |
17832 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
17833 | wasted time in find_partial_die, when we reread the compilation |
17834 | unit with load_all_dies set. */ | |
72bf9492 | 17835 | |
5afb4e99 | 17836 | if (load_all |
72929c62 | 17837 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 17838 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
17839 | || abbrev->tag == DW_TAG_variable |
17840 | || abbrev->tag == DW_TAG_namespace | |
17841 | || part_die->is_declaration) | |
17842 | { | |
17843 | void **slot; | |
17844 | ||
17845 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
17846 | to_underlying (part_die->sect_off), |
17847 | INSERT); | |
72bf9492 DJ |
17848 | *slot = part_die; |
17849 | } | |
17850 | ||
72bf9492 | 17851 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 17852 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
17853 | languages we have to, so that we can get at method physnames |
17854 | to infer fully qualified class names, for DW_AT_specification, | |
17855 | and for C++ template arguments. For C++, we also look one level | |
17856 | inside functions to find template arguments (if the name of the | |
17857 | function does not already contain the template arguments). | |
bc30ff58 | 17858 | |
0a4b0913 AB |
17859 | For Ada and Fortran, we need to scan the children of subprograms |
17860 | and lexical blocks as well because these languages allow the | |
17861 | definition of nested entities that could be interesting for the | |
17862 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 17863 | if (last_die->has_children |
5afb4e99 DJ |
17864 | && (load_all |
17865 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 17866 | || last_die->tag == DW_TAG_module |
72bf9492 | 17867 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
17868 | || (cu->language == language_cplus |
17869 | && last_die->tag == DW_TAG_subprogram | |
17870 | && (last_die->name == NULL | |
17871 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
17872 | || (cu->language != language_c |
17873 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 17874 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 17875 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 17876 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
17877 | || ((cu->language == language_ada |
17878 | || cu->language == language_fortran) | |
bc30ff58 JB |
17879 | && (last_die->tag == DW_TAG_subprogram |
17880 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
17881 | { |
17882 | nesting_level++; | |
17883 | parent_die = last_die; | |
17884 | continue; | |
17885 | } | |
17886 | ||
17887 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 17888 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
17889 | |
17890 | /* Back to the top, do it again. */ | |
17891 | } | |
17892 | } | |
17893 | ||
6f06d47b YQ |
17894 | partial_die_info::partial_die_info (sect_offset sect_off_, |
17895 | struct abbrev_info *abbrev) | |
17896 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
17897 | { | |
17898 | } | |
17899 | ||
35cc7ed7 YQ |
17900 | /* Read a minimal amount of information into the minimal die structure. |
17901 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 17902 | |
48fbe735 YQ |
17903 | const gdb_byte * |
17904 | partial_die_info::read (const struct die_reader_specs *reader, | |
17905 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 17906 | { |
dee91e82 | 17907 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
17908 | struct dwarf2_per_objfile *dwarf2_per_objfile |
17909 | = cu->per_cu->dwarf2_per_objfile; | |
fa238c03 | 17910 | unsigned int i; |
c5aa993b | 17911 | int has_low_pc_attr = 0; |
c906108c | 17912 | int has_high_pc_attr = 0; |
91da1414 | 17913 | int high_pc_relative = 0; |
c906108c | 17914 | |
18a8505e | 17915 | std::vector<struct attribute> attr_vec (abbrev.num_attrs); |
fd0a254f | 17916 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 17917 | { |
18a8505e AT |
17918 | bool need_reprocess; |
17919 | info_ptr = read_attribute (reader, &attr_vec[i], &abbrev.attrs[i], | |
17920 | info_ptr, &need_reprocess); | |
17921 | /* String and address offsets that need to do the reprocessing have | |
17922 | already been read at this point, so there is no need to wait until | |
17923 | the loop terminates to do the reprocessing. */ | |
17924 | if (need_reprocess) | |
17925 | read_attribute_reprocess (reader, &attr_vec[i]); | |
17926 | attribute &attr = attr_vec[i]; | |
c906108c | 17927 | /* Store the data if it is of an attribute we want to keep in a |
c5aa993b | 17928 | partial symbol table. */ |
c906108c SS |
17929 | switch (attr.name) |
17930 | { | |
17931 | case DW_AT_name: | |
48fbe735 | 17932 | switch (tag) |
71c25dea TT |
17933 | { |
17934 | case DW_TAG_compile_unit: | |
95554aad | 17935 | case DW_TAG_partial_unit: |
348e048f | 17936 | case DW_TAG_type_unit: |
71c25dea TT |
17937 | /* Compilation units have a DW_AT_name that is a filename, not |
17938 | a source language identifier. */ | |
17939 | case DW_TAG_enumeration_type: | |
17940 | case DW_TAG_enumerator: | |
17941 | /* These tags always have simple identifiers already; no need | |
17942 | to canonicalize them. */ | |
48fbe735 | 17943 | name = DW_STRING (&attr); |
71c25dea TT |
17944 | break; |
17945 | default: | |
48fbe735 YQ |
17946 | { |
17947 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
17948 | ||
17949 | name | |
17950 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
17951 | &objfile->per_bfd->storage_obstack); | |
17952 | } | |
71c25dea TT |
17953 | break; |
17954 | } | |
c906108c | 17955 | break; |
31ef98ae | 17956 | case DW_AT_linkage_name: |
c906108c | 17957 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
17958 | /* Note that both forms of linkage name might appear. We |
17959 | assume they will be the same, and we only store the last | |
17960 | one we see. */ | |
48fbe735 | 17961 | linkage_name = DW_STRING (&attr); |
c906108c SS |
17962 | break; |
17963 | case DW_AT_low_pc: | |
17964 | has_low_pc_attr = 1; | |
cd6c91b4 | 17965 | lowpc = attr.value_as_address (); |
c906108c SS |
17966 | break; |
17967 | case DW_AT_high_pc: | |
17968 | has_high_pc_attr = 1; | |
cd6c91b4 TT |
17969 | highpc = attr.value_as_address (); |
17970 | if (cu->header.version >= 4 && attr.form_is_constant ()) | |
31aa7e4e | 17971 | high_pc_relative = 1; |
c906108c SS |
17972 | break; |
17973 | case DW_AT_location: | |
0963b4bd | 17974 | /* Support the .debug_loc offsets. */ |
4fc6c0d5 | 17975 | if (attr.form_is_block ()) |
8e19ed76 | 17976 | { |
48fbe735 | 17977 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 17978 | } |
cd6c91b4 | 17979 | else if (attr.form_is_section_offset ()) |
8e19ed76 | 17980 | { |
4d3c2250 | 17981 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
17982 | } |
17983 | else | |
17984 | { | |
4d3c2250 KB |
17985 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
17986 | "partial symbol information"); | |
8e19ed76 | 17987 | } |
c906108c | 17988 | break; |
c906108c | 17989 | case DW_AT_external: |
48fbe735 | 17990 | is_external = DW_UNSND (&attr); |
c906108c SS |
17991 | break; |
17992 | case DW_AT_declaration: | |
48fbe735 | 17993 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
17994 | break; |
17995 | case DW_AT_type: | |
48fbe735 | 17996 | has_type = 1; |
c906108c SS |
17997 | break; |
17998 | case DW_AT_abstract_origin: | |
17999 | case DW_AT_specification: | |
72bf9492 | 18000 | case DW_AT_extension: |
48fbe735 YQ |
18001 | has_specification = 1; |
18002 | spec_offset = dwarf2_get_ref_die_offset (&attr); | |
18003 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 | 18004 | || cu->per_cu->is_dwz); |
c906108c SS |
18005 | break; |
18006 | case DW_AT_sibling: | |
18007 | /* Ignore absolute siblings, they might point outside of | |
18008 | the current compile unit. */ | |
18009 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 18010 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 18011 | else |
b9502d3f | 18012 | { |
48fbe735 | 18013 | const gdb_byte *buffer = reader->buffer; |
9c541725 PA |
18014 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
18015 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
18016 | |
18017 | if (sibling_ptr < info_ptr) | |
b98664d3 | 18018 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 KS |
18019 | else if (sibling_ptr > reader->buffer_end) |
18020 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f | 18021 | else |
48fbe735 | 18022 | sibling = sibling_ptr; |
b9502d3f | 18023 | } |
c906108c | 18024 | break; |
fa4028e9 | 18025 | case DW_AT_byte_size: |
48fbe735 | 18026 | has_byte_size = 1; |
fa4028e9 | 18027 | break; |
ff908ebf | 18028 | case DW_AT_const_value: |
48fbe735 | 18029 | has_const_value = 1; |
ff908ebf | 18030 | break; |
68511cec CES |
18031 | case DW_AT_calling_convention: |
18032 | /* DWARF doesn't provide a way to identify a program's source-level | |
18033 | entry point. DW_AT_calling_convention attributes are only meant | |
18034 | to describe functions' calling conventions. | |
18035 | ||
18036 | However, because it's a necessary piece of information in | |
0c1b455e TT |
18037 | Fortran, and before DWARF 4 DW_CC_program was the only |
18038 | piece of debugging information whose definition refers to | |
18039 | a 'main program' at all, several compilers marked Fortran | |
18040 | main programs with DW_CC_program --- even when those | |
18041 | functions use the standard calling conventions. | |
18042 | ||
18043 | Although DWARF now specifies a way to provide this | |
18044 | information, we support this practice for backward | |
18045 | compatibility. */ | |
68511cec | 18046 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 18047 | && cu->language == language_fortran) |
48fbe735 | 18048 | main_subprogram = 1; |
68511cec | 18049 | break; |
481860b3 GB |
18050 | case DW_AT_inline: |
18051 | if (DW_UNSND (&attr) == DW_INL_inlined | |
18052 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 18053 | may_be_inlined = 1; |
481860b3 | 18054 | break; |
95554aad TT |
18055 | |
18056 | case DW_AT_import: | |
48fbe735 | 18057 | if (tag == DW_TAG_imported_unit) |
36586728 | 18058 | { |
48fbe735 YQ |
18059 | d.sect_off = dwarf2_get_ref_die_offset (&attr); |
18060 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 TT |
18061 | || cu->per_cu->is_dwz); |
18062 | } | |
95554aad TT |
18063 | break; |
18064 | ||
0c1b455e | 18065 | case DW_AT_main_subprogram: |
48fbe735 | 18066 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
18067 | break; |
18068 | ||
05caa1d2 TT |
18069 | case DW_AT_ranges: |
18070 | { | |
18071 | /* It would be nice to reuse dwarf2_get_pc_bounds here, | |
18072 | but that requires a full DIE, so instead we just | |
18073 | reimplement it. */ | |
18074 | int need_ranges_base = tag != DW_TAG_compile_unit; | |
18075 | unsigned int ranges_offset = (DW_UNSND (&attr) | |
18076 | + (need_ranges_base | |
18077 | ? cu->ranges_base | |
18078 | : 0)); | |
18079 | ||
18080 | /* Value of the DW_AT_ranges attribute is the offset in the | |
18081 | .debug_ranges section. */ | |
18082 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, | |
18083 | nullptr)) | |
18084 | has_pc_info = 1; | |
18085 | } | |
18086 | break; | |
18087 | ||
c906108c SS |
18088 | default: |
18089 | break; | |
18090 | } | |
18091 | } | |
18092 | ||
10d06d82 TT |
18093 | /* For Ada, if both the name and the linkage name appear, we prefer |
18094 | the latter. This lets "catch exception" work better, regardless | |
18095 | of the order in which the name and linkage name were emitted. | |
18096 | Really, though, this is just a workaround for the fact that gdb | |
18097 | doesn't store both the name and the linkage name. */ | |
18098 | if (cu->language == language_ada && linkage_name != nullptr) | |
18099 | name = linkage_name; | |
18100 | ||
91da1414 | 18101 | if (high_pc_relative) |
48fbe735 | 18102 | highpc += lowpc; |
91da1414 | 18103 | |
9373cf26 JK |
18104 | if (has_low_pc_attr && has_high_pc_attr) |
18105 | { | |
18106 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
18107 | eliminate duplicate copies of functions and vtables and such. | |
18108 | The linker will arbitrarily choose one and discard the others. | |
18109 | The AT_*_pc values for such functions refer to local labels in | |
18110 | these sections. If the section from that file was discarded, the | |
18111 | labels are not in the output, so the relocs get a value of 0. | |
18112 | If this is a discarded function, mark the pc bounds as invalid, | |
18113 | so that GDB will ignore it. */ | |
48fbe735 | 18114 | if (lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) |
9373cf26 | 18115 | { |
48fbe735 | 18116 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18117 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18118 | |
b98664d3 | 18119 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 18120 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18121 | paddress (gdbarch, lowpc), |
18122 | sect_offset_str (sect_off), | |
9d8780f0 | 18123 | objfile_name (objfile)); |
9373cf26 JK |
18124 | } |
18125 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 18126 | else if (lowpc >= highpc) |
9373cf26 | 18127 | { |
48fbe735 | 18128 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18129 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18130 | |
b98664d3 | 18131 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 18132 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18133 | paddress (gdbarch, lowpc), |
18134 | paddress (gdbarch, highpc), | |
18135 | sect_offset_str (sect_off), | |
9c541725 | 18136 | objfile_name (objfile)); |
9373cf26 JK |
18137 | } |
18138 | else | |
48fbe735 | 18139 | has_pc_info = 1; |
9373cf26 | 18140 | } |
85cbf3d3 | 18141 | |
c906108c SS |
18142 | return info_ptr; |
18143 | } | |
18144 | ||
72bf9492 DJ |
18145 | /* Find a cached partial DIE at OFFSET in CU. */ |
18146 | ||
d590ff25 YQ |
18147 | struct partial_die_info * |
18148 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
18149 | { |
18150 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 18151 | struct partial_die_info part_die (sect_off); |
72bf9492 | 18152 | |
9a3c8263 | 18153 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 18154 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 18155 | to_underlying (sect_off))); |
72bf9492 | 18156 | |
72bf9492 DJ |
18157 | return lookup_die; |
18158 | } | |
18159 | ||
348e048f DE |
18160 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
18161 | except in the case of .debug_types DIEs which do not reference | |
18162 | outside their CU (they do however referencing other types via | |
55f1336d | 18163 | DW_FORM_ref_sig8). */ |
72bf9492 | 18164 | |
122cf0f2 | 18165 | static const struct cu_partial_die_info |
9c541725 | 18166 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 18167 | { |
518817b3 SM |
18168 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18169 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18170 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5afb4e99 DJ |
18171 | struct dwarf2_per_cu_data *per_cu = NULL; |
18172 | struct partial_die_info *pd = NULL; | |
72bf9492 | 18173 | |
36586728 | 18174 | if (offset_in_dwz == cu->per_cu->is_dwz |
4057dfde | 18175 | && cu->header.offset_in_cu_p (sect_off)) |
5afb4e99 | 18176 | { |
d590ff25 | 18177 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 18178 | if (pd != NULL) |
fb816e8b | 18179 | return { cu, pd }; |
0d99eb77 DE |
18180 | /* We missed recording what we needed. |
18181 | Load all dies and try again. */ | |
18182 | per_cu = cu->per_cu; | |
5afb4e99 | 18183 | } |
0d99eb77 DE |
18184 | else |
18185 | { | |
18186 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 18187 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 18188 | { |
9d8780f0 SM |
18189 | error (_("Dwarf Error: Type Unit at offset %s contains" |
18190 | " external reference to offset %s [in module %s].\n"), | |
18191 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
18192 | bfd_get_filename (objfile->obfd)); |
18193 | } | |
9c541725 | 18194 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 18195 | dwarf2_per_objfile); |
72bf9492 | 18196 | |
0d99eb77 DE |
18197 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
18198 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 18199 | |
0d99eb77 | 18200 | per_cu->cu->last_used = 0; |
d590ff25 | 18201 | pd = per_cu->cu->find_partial_die (sect_off); |
0d99eb77 | 18202 | } |
5afb4e99 | 18203 | |
dee91e82 DE |
18204 | /* If we didn't find it, and not all dies have been loaded, |
18205 | load them all and try again. */ | |
18206 | ||
5afb4e99 DJ |
18207 | if (pd == NULL && per_cu->load_all_dies == 0) |
18208 | { | |
5afb4e99 | 18209 | per_cu->load_all_dies = 1; |
fd820528 DE |
18210 | |
18211 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
18212 | THIS_CU->cu may already be in use. So we can't just free it and | |
18213 | replace its DIEs with the ones we read in. Instead, we leave those | |
18214 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
18215 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
18216 | set. */ | |
dee91e82 | 18217 | load_partial_comp_unit (per_cu); |
5afb4e99 | 18218 | |
d590ff25 | 18219 | pd = per_cu->cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18220 | } |
18221 | ||
18222 | if (pd == NULL) | |
18223 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 18224 | _("could not find partial DIE %s " |
3e43a32a | 18225 | "in cache [from module %s]\n"), |
9d8780f0 | 18226 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
fb816e8b | 18227 | return { per_cu->cu, pd }; |
72bf9492 DJ |
18228 | } |
18229 | ||
abc72ce4 DE |
18230 | /* See if we can figure out if the class lives in a namespace. We do |
18231 | this by looking for a member function; its demangled name will | |
18232 | contain namespace info, if there is any. */ | |
18233 | ||
18234 | static void | |
18235 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
18236 | struct dwarf2_cu *cu) | |
18237 | { | |
18238 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
18239 | what template types look like, because the demangler | |
18240 | frequently doesn't give the same name as the debug info. We | |
18241 | could fix this by only using the demangled name to get the | |
18242 | prefix (but see comment in read_structure_type). */ | |
18243 | ||
18244 | struct partial_die_info *real_pdi; | |
18245 | struct partial_die_info *child_pdi; | |
18246 | ||
18247 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
18248 | we should not do this. We'll prepend the parent's fully qualified | |
18249 | name when we create the partial symbol. */ | |
18250 | ||
18251 | real_pdi = struct_pdi; | |
18252 | while (real_pdi->has_specification) | |
fb816e8b | 18253 | { |
122cf0f2 AB |
18254 | auto res = find_partial_die (real_pdi->spec_offset, |
18255 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
18256 | real_pdi = res.pdi; |
18257 | cu = res.cu; | |
18258 | } | |
abc72ce4 DE |
18259 | |
18260 | if (real_pdi->die_parent != NULL) | |
18261 | return; | |
18262 | ||
18263 | for (child_pdi = struct_pdi->die_child; | |
18264 | child_pdi != NULL; | |
18265 | child_pdi = child_pdi->die_sibling) | |
18266 | { | |
18267 | if (child_pdi->tag == DW_TAG_subprogram | |
18268 | && child_pdi->linkage_name != NULL) | |
18269 | { | |
43816ebc TT |
18270 | gdb::unique_xmalloc_ptr<char> actual_class_name |
18271 | (language_class_name_from_physname (cu->language_defn, | |
18272 | child_pdi->linkage_name)); | |
abc72ce4 DE |
18273 | if (actual_class_name != NULL) |
18274 | { | |
518817b3 | 18275 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 | 18276 | struct_pdi->name |
021887d8 | 18277 | = obstack_strdup (&objfile->per_bfd->storage_obstack, |
43816ebc | 18278 | actual_class_name.get ()); |
abc72ce4 DE |
18279 | } |
18280 | break; | |
18281 | } | |
18282 | } | |
18283 | } | |
18284 | ||
52356b79 YQ |
18285 | void |
18286 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 18287 | { |
abc72ce4 DE |
18288 | /* Once we've fixed up a die, there's no point in doing so again. |
18289 | This also avoids a memory leak if we were to call | |
18290 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 18291 | if (fixup_called) |
abc72ce4 DE |
18292 | return; |
18293 | ||
72bf9492 DJ |
18294 | /* If we found a reference attribute and the DIE has no name, try |
18295 | to find a name in the referred to DIE. */ | |
18296 | ||
52356b79 | 18297 | if (name == NULL && has_specification) |
72bf9492 DJ |
18298 | { |
18299 | struct partial_die_info *spec_die; | |
72bf9492 | 18300 | |
122cf0f2 | 18301 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
18302 | spec_die = res.pdi; |
18303 | cu = res.cu; | |
72bf9492 | 18304 | |
52356b79 | 18305 | spec_die->fixup (cu); |
72bf9492 DJ |
18306 | |
18307 | if (spec_die->name) | |
18308 | { | |
52356b79 | 18309 | name = spec_die->name; |
72bf9492 DJ |
18310 | |
18311 | /* Copy DW_AT_external attribute if it is set. */ | |
18312 | if (spec_die->is_external) | |
52356b79 | 18313 | is_external = spec_die->is_external; |
72bf9492 DJ |
18314 | } |
18315 | } | |
18316 | ||
18317 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 | 18318 | |
52356b79 YQ |
18319 | if (name == NULL && tag == DW_TAG_namespace) |
18320 | name = CP_ANONYMOUS_NAMESPACE_STR; | |
72bf9492 | 18321 | |
abc72ce4 DE |
18322 | /* If there is no parent die to provide a namespace, and there are |
18323 | children, see if we can determine the namespace from their linkage | |
122d1940 | 18324 | name. */ |
abc72ce4 | 18325 | if (cu->language == language_cplus |
fd5866f6 | 18326 | && !cu->per_cu->dwarf2_per_objfile->types.empty () |
52356b79 YQ |
18327 | && die_parent == NULL |
18328 | && has_children | |
18329 | && (tag == DW_TAG_class_type | |
18330 | || tag == DW_TAG_structure_type | |
18331 | || tag == DW_TAG_union_type)) | |
18332 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 18333 | |
53832f31 TT |
18334 | /* GCC might emit a nameless struct or union that has a linkage |
18335 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
52356b79 YQ |
18336 | if (name == NULL |
18337 | && (tag == DW_TAG_class_type | |
18338 | || tag == DW_TAG_interface_type | |
18339 | || tag == DW_TAG_structure_type | |
18340 | || tag == DW_TAG_union_type) | |
18341 | && linkage_name != NULL) | |
53832f31 | 18342 | { |
43816ebc TT |
18343 | gdb::unique_xmalloc_ptr<char> demangled |
18344 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
18345 | if (demangled != nullptr) | |
53832f31 | 18346 | { |
96408a79 SA |
18347 | const char *base; |
18348 | ||
18349 | /* Strip any leading namespaces/classes, keep only the base name. | |
18350 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
18351 | base = strrchr (demangled.get (), ':'); |
18352 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
18353 | base++; |
18354 | else | |
43816ebc | 18355 | base = demangled.get (); |
96408a79 | 18356 | |
518817b3 | 18357 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
021887d8 | 18358 | name = obstack_strdup (&objfile->per_bfd->storage_obstack, base); |
53832f31 TT |
18359 | } |
18360 | } | |
18361 | ||
52356b79 | 18362 | fixup_called = 1; |
72bf9492 DJ |
18363 | } |
18364 | ||
18a8505e AT |
18365 | /* Process the attributes that had to be skipped in the first round. These |
18366 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
18367 | They could not have been processed in the first round, because at the time | |
18368 | the values of str_offsets_base or addr_base may not have been known. */ | |
18369 | void read_attribute_reprocess (const struct die_reader_specs *reader, | |
18370 | struct attribute *attr) | |
18371 | { | |
18372 | struct dwarf2_cu *cu = reader->cu; | |
18373 | switch (attr->form) | |
18374 | { | |
18375 | case DW_FORM_addrx: | |
18376 | case DW_FORM_GNU_addr_index: | |
18377 | DW_ADDR (attr) = read_addr_index (cu, DW_UNSND (attr)); | |
18378 | break; | |
18379 | case DW_FORM_strx: | |
18380 | case DW_FORM_strx1: | |
18381 | case DW_FORM_strx2: | |
18382 | case DW_FORM_strx3: | |
18383 | case DW_FORM_strx4: | |
18384 | case DW_FORM_GNU_str_index: | |
18385 | { | |
18386 | unsigned int str_index = DW_UNSND (attr); | |
18387 | if (reader->dwo_file != NULL) | |
18388 | { | |
18389 | DW_STRING (attr) = read_dwo_str_index (reader, str_index); | |
18390 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18391 | } | |
18392 | else | |
18393 | { | |
18394 | DW_STRING (attr) = read_stub_str_index (cu, str_index); | |
18395 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18396 | } | |
18397 | break; | |
18398 | } | |
18399 | default: | |
18400 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
18401 | } | |
18402 | } | |
18403 | ||
a8329558 | 18404 | /* Read an attribute value described by an attribute form. */ |
c906108c | 18405 | |
d521ce57 | 18406 | static const gdb_byte * |
dee91e82 DE |
18407 | read_attribute_value (const struct die_reader_specs *reader, |
18408 | struct attribute *attr, unsigned form, | |
18a8505e AT |
18409 | LONGEST implicit_const, const gdb_byte *info_ptr, |
18410 | bool *need_reprocess) | |
c906108c | 18411 | { |
dee91e82 | 18412 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18413 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18414 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18415 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 18416 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
dee91e82 | 18417 | bfd *abfd = reader->abfd; |
e7c27a73 | 18418 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
18419 | unsigned int bytes_read; |
18420 | struct dwarf_block *blk; | |
18a8505e | 18421 | *need_reprocess = false; |
c906108c | 18422 | |
aead7601 | 18423 | attr->form = (enum dwarf_form) form; |
a8329558 | 18424 | switch (form) |
c906108c | 18425 | { |
c906108c | 18426 | case DW_FORM_ref_addr: |
ae411497 | 18427 | if (cu->header.version == 2) |
c8a7a66f TT |
18428 | DW_UNSND (attr) = cu->header.read_address (abfd, info_ptr, |
18429 | &bytes_read); | |
ae411497 | 18430 | else |
8266302d TT |
18431 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, |
18432 | &bytes_read); | |
ae411497 TT |
18433 | info_ptr += bytes_read; |
18434 | break; | |
36586728 | 18435 | case DW_FORM_GNU_ref_alt: |
8266302d | 18436 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
36586728 TT |
18437 | info_ptr += bytes_read; |
18438 | break; | |
ae411497 | 18439 | case DW_FORM_addr: |
c8a7a66f | 18440 | DW_ADDR (attr) = cu->header.read_address (abfd, info_ptr, &bytes_read); |
3e29f34a | 18441 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 18442 | info_ptr += bytes_read; |
c906108c SS |
18443 | break; |
18444 | case DW_FORM_block2: | |
7b5a2f43 | 18445 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18446 | blk->size = read_2_bytes (abfd, info_ptr); |
18447 | info_ptr += 2; | |
18448 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18449 | info_ptr += blk->size; | |
18450 | DW_BLOCK (attr) = blk; | |
18451 | break; | |
18452 | case DW_FORM_block4: | |
7b5a2f43 | 18453 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18454 | blk->size = read_4_bytes (abfd, info_ptr); |
18455 | info_ptr += 4; | |
18456 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18457 | info_ptr += blk->size; | |
18458 | DW_BLOCK (attr) = blk; | |
18459 | break; | |
18460 | case DW_FORM_data2: | |
18461 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
18462 | info_ptr += 2; | |
18463 | break; | |
18464 | case DW_FORM_data4: | |
18465 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
18466 | info_ptr += 4; | |
18467 | break; | |
18468 | case DW_FORM_data8: | |
18469 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
18470 | info_ptr += 8; | |
18471 | break; | |
0224619f JK |
18472 | case DW_FORM_data16: |
18473 | blk = dwarf_alloc_block (cu); | |
18474 | blk->size = 16; | |
18475 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
18476 | info_ptr += 16; | |
18477 | DW_BLOCK (attr) = blk; | |
18478 | break; | |
2dc7f7b3 | 18479 | case DW_FORM_sec_offset: |
8266302d | 18480 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
2dc7f7b3 TT |
18481 | info_ptr += bytes_read; |
18482 | break; | |
c906108c | 18483 | case DW_FORM_string: |
9b1c24c8 | 18484 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 18485 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
18486 | info_ptr += bytes_read; |
18487 | break; | |
4bdf3d34 | 18488 | case DW_FORM_strp: |
36586728 TT |
18489 | if (!cu->per_cu->is_dwz) |
18490 | { | |
ed2dc618 SM |
18491 | DW_STRING (attr) = read_indirect_string (dwarf2_per_objfile, |
18492 | abfd, info_ptr, cu_header, | |
36586728 TT |
18493 | &bytes_read); |
18494 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18495 | info_ptr += bytes_read; | |
18496 | break; | |
18497 | } | |
18498 | /* FALLTHROUGH */ | |
43988095 JK |
18499 | case DW_FORM_line_strp: |
18500 | if (!cu->per_cu->is_dwz) | |
18501 | { | |
ed2dc618 SM |
18502 | DW_STRING (attr) = read_indirect_line_string (dwarf2_per_objfile, |
18503 | abfd, info_ptr, | |
43988095 JK |
18504 | cu_header, &bytes_read); |
18505 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18506 | info_ptr += bytes_read; | |
18507 | break; | |
18508 | } | |
18509 | /* FALLTHROUGH */ | |
36586728 TT |
18510 | case DW_FORM_GNU_strp_alt: |
18511 | { | |
ed2dc618 | 18512 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
8266302d TT |
18513 | LONGEST str_offset = cu_header->read_offset (abfd, info_ptr, |
18514 | &bytes_read); | |
36586728 | 18515 | |
ed2dc618 SM |
18516 | DW_STRING (attr) = read_indirect_string_from_dwz (objfile, |
18517 | dwz, str_offset); | |
36586728 TT |
18518 | DW_STRING_IS_CANONICAL (attr) = 0; |
18519 | info_ptr += bytes_read; | |
18520 | } | |
4bdf3d34 | 18521 | break; |
2dc7f7b3 | 18522 | case DW_FORM_exprloc: |
c906108c | 18523 | case DW_FORM_block: |
7b5a2f43 | 18524 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18525 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18526 | info_ptr += bytes_read; | |
18527 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18528 | info_ptr += blk->size; | |
18529 | DW_BLOCK (attr) = blk; | |
18530 | break; | |
18531 | case DW_FORM_block1: | |
7b5a2f43 | 18532 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18533 | blk->size = read_1_byte (abfd, info_ptr); |
18534 | info_ptr += 1; | |
18535 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18536 | info_ptr += blk->size; | |
18537 | DW_BLOCK (attr) = blk; | |
18538 | break; | |
18539 | case DW_FORM_data1: | |
18540 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
18541 | info_ptr += 1; | |
18542 | break; | |
18543 | case DW_FORM_flag: | |
18544 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
18545 | info_ptr += 1; | |
18546 | break; | |
2dc7f7b3 TT |
18547 | case DW_FORM_flag_present: |
18548 | DW_UNSND (attr) = 1; | |
18549 | break; | |
c906108c SS |
18550 | case DW_FORM_sdata: |
18551 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
18552 | info_ptr += bytes_read; | |
18553 | break; | |
18554 | case DW_FORM_udata: | |
18a8505e | 18555 | case DW_FORM_rnglistx: |
c906108c SS |
18556 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18557 | info_ptr += bytes_read; | |
18558 | break; | |
18559 | case DW_FORM_ref1: | |
9c541725 | 18560 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18561 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
18562 | info_ptr += 1; |
18563 | break; | |
18564 | case DW_FORM_ref2: | |
9c541725 | 18565 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18566 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
18567 | info_ptr += 2; |
18568 | break; | |
18569 | case DW_FORM_ref4: | |
9c541725 | 18570 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18571 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
18572 | info_ptr += 4; |
18573 | break; | |
613e1657 | 18574 | case DW_FORM_ref8: |
9c541725 | 18575 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18576 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
18577 | info_ptr += 8; |
18578 | break; | |
55f1336d | 18579 | case DW_FORM_ref_sig8: |
ac9ec31b | 18580 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
18581 | info_ptr += 8; |
18582 | break; | |
c906108c | 18583 | case DW_FORM_ref_udata: |
9c541725 | 18584 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18585 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
18586 | info_ptr += bytes_read; |
18587 | break; | |
c906108c | 18588 | case DW_FORM_indirect: |
a8329558 KW |
18589 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18590 | info_ptr += bytes_read; | |
43988095 JK |
18591 | if (form == DW_FORM_implicit_const) |
18592 | { | |
18593 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
18594 | info_ptr += bytes_read; | |
18595 | } | |
18596 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
18a8505e | 18597 | info_ptr, need_reprocess); |
43988095 JK |
18598 | break; |
18599 | case DW_FORM_implicit_const: | |
18600 | DW_SND (attr) = implicit_const; | |
a8329558 | 18601 | break; |
336d760d | 18602 | case DW_FORM_addrx: |
3019eac3 | 18603 | case DW_FORM_GNU_addr_index: |
18a8505e AT |
18604 | *need_reprocess = true; |
18605 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
3019eac3 DE |
18606 | info_ptr += bytes_read; |
18607 | break; | |
cf532bd1 | 18608 | case DW_FORM_strx: |
15f18d14 AT |
18609 | case DW_FORM_strx1: |
18610 | case DW_FORM_strx2: | |
18611 | case DW_FORM_strx3: | |
18612 | case DW_FORM_strx4: | |
3019eac3 | 18613 | case DW_FORM_GNU_str_index: |
3019eac3 | 18614 | { |
15f18d14 AT |
18615 | ULONGEST str_index; |
18616 | if (form == DW_FORM_strx1) | |
18617 | { | |
18618 | str_index = read_1_byte (abfd, info_ptr); | |
18619 | info_ptr += 1; | |
18620 | } | |
18621 | else if (form == DW_FORM_strx2) | |
18622 | { | |
18623 | str_index = read_2_bytes (abfd, info_ptr); | |
18624 | info_ptr += 2; | |
18625 | } | |
18626 | else if (form == DW_FORM_strx3) | |
18627 | { | |
18628 | str_index = read_3_bytes (abfd, info_ptr); | |
18629 | info_ptr += 3; | |
18630 | } | |
18631 | else if (form == DW_FORM_strx4) | |
18632 | { | |
18633 | str_index = read_4_bytes (abfd, info_ptr); | |
18634 | info_ptr += 4; | |
18635 | } | |
18636 | else | |
18637 | { | |
18638 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
18639 | info_ptr += bytes_read; | |
18640 | } | |
18a8505e AT |
18641 | *need_reprocess = true; |
18642 | DW_UNSND (attr) = str_index; | |
18643 | } | |
3019eac3 | 18644 | break; |
c906108c | 18645 | default: |
8a3fe4f8 | 18646 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
18647 | dwarf_form_name (form), |
18648 | bfd_get_filename (abfd)); | |
c906108c | 18649 | } |
28e94949 | 18650 | |
36586728 | 18651 | /* Super hack. */ |
cd6c91b4 | 18652 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
18653 | attr->form = DW_FORM_GNU_ref_alt; |
18654 | ||
28e94949 JB |
18655 | /* We have seen instances where the compiler tried to emit a byte |
18656 | size attribute of -1 which ended up being encoded as an unsigned | |
18657 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
18658 | an object of this size seems pretty unlikely so we can relatively | |
18659 | safely treat these cases as if the size attribute was invalid and | |
18660 | treat them as zero by default. */ | |
18661 | if (attr->name == DW_AT_byte_size | |
18662 | && form == DW_FORM_data4 | |
18663 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
18664 | { |
18665 | complaint | |
b98664d3 | 18666 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
43bbcdc2 | 18667 | hex_string (DW_UNSND (attr))); |
01c66ae6 JB |
18668 | DW_UNSND (attr) = 0; |
18669 | } | |
28e94949 | 18670 | |
c906108c SS |
18671 | return info_ptr; |
18672 | } | |
18673 | ||
a8329558 KW |
18674 | /* Read an attribute described by an abbreviated attribute. */ |
18675 | ||
d521ce57 | 18676 | static const gdb_byte * |
dee91e82 DE |
18677 | read_attribute (const struct die_reader_specs *reader, |
18678 | struct attribute *attr, struct attr_abbrev *abbrev, | |
18a8505e | 18679 | const gdb_byte *info_ptr, bool *need_reprocess) |
a8329558 KW |
18680 | { |
18681 | attr->name = abbrev->name; | |
43988095 | 18682 | return read_attribute_value (reader, attr, abbrev->form, |
18a8505e AT |
18683 | abbrev->implicit_const, info_ptr, |
18684 | need_reprocess); | |
a8329558 KW |
18685 | } |
18686 | ||
c764a876 DE |
18687 | /* Cover function for read_initial_length. |
18688 | Returns the length of the object at BUF, and stores the size of the | |
18689 | initial length in *BYTES_READ and stores the size that offsets will be in | |
18690 | *OFFSET_SIZE. | |
18691 | If the initial length size is not equivalent to that specified in | |
18692 | CU_HEADER then issue a complaint. | |
18693 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 18694 | |
c764a876 | 18695 | static LONGEST |
d521ce57 | 18696 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
18697 | const struct comp_unit_head *cu_header, |
18698 | unsigned int *bytes_read, | |
18699 | unsigned int *offset_size) | |
18700 | { | |
18701 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
18702 | ||
18703 | gdb_assert (cu_header->initial_length_size == 4 | |
18704 | || cu_header->initial_length_size == 8 | |
18705 | || cu_header->initial_length_size == 12); | |
18706 | ||
18707 | if (cu_header->initial_length_size != *bytes_read) | |
b98664d3 | 18708 | complaint (_("intermixed 32-bit and 64-bit DWARF sections")); |
dd373385 | 18709 | |
c764a876 | 18710 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 18711 | return length; |
613e1657 KB |
18712 | } |
18713 | ||
43988095 JK |
18714 | /* Return pointer to string at section SECT offset STR_OFFSET with error |
18715 | reporting strings FORM_NAME and SECT_NAME. */ | |
18716 | ||
d521ce57 | 18717 | static const char * |
ed2dc618 SM |
18718 | read_indirect_string_at_offset_from (struct objfile *objfile, |
18719 | bfd *abfd, LONGEST str_offset, | |
43988095 JK |
18720 | struct dwarf2_section_info *sect, |
18721 | const char *form_name, | |
18722 | const char *sect_name) | |
18723 | { | |
96b79293 | 18724 | sect->read (objfile); |
43988095 JK |
18725 | if (sect->buffer == NULL) |
18726 | error (_("%s used without %s section [in module %s]"), | |
18727 | form_name, sect_name, bfd_get_filename (abfd)); | |
18728 | if (str_offset >= sect->size) | |
18729 | error (_("%s pointing outside of %s section [in module %s]"), | |
18730 | form_name, sect_name, bfd_get_filename (abfd)); | |
4bdf3d34 | 18731 | gdb_assert (HOST_CHAR_BIT == 8); |
43988095 | 18732 | if (sect->buffer[str_offset] == '\0') |
4bdf3d34 | 18733 | return NULL; |
43988095 JK |
18734 | return (const char *) (sect->buffer + str_offset); |
18735 | } | |
18736 | ||
18737 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ | |
18738 | ||
18739 | static const char * | |
ed2dc618 SM |
18740 | read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18741 | bfd *abfd, LONGEST str_offset) | |
43988095 | 18742 | { |
ed2dc618 SM |
18743 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
18744 | abfd, str_offset, | |
43988095 JK |
18745 | &dwarf2_per_objfile->str, |
18746 | "DW_FORM_strp", ".debug_str"); | |
18747 | } | |
18748 | ||
18749 | /* Return pointer to string at .debug_line_str offset STR_OFFSET. */ | |
18750 | ||
18751 | static const char * | |
ed2dc618 SM |
18752 | read_indirect_line_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18753 | bfd *abfd, LONGEST str_offset) | |
43988095 | 18754 | { |
ed2dc618 SM |
18755 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
18756 | abfd, str_offset, | |
43988095 JK |
18757 | &dwarf2_per_objfile->line_str, |
18758 | "DW_FORM_line_strp", | |
18759 | ".debug_line_str"); | |
c906108c SS |
18760 | } |
18761 | ||
36586728 TT |
18762 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
18763 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
18764 | the string consists of a single NUL byte, return NULL; otherwise | |
18765 | return a pointer to the string. */ | |
18766 | ||
d521ce57 | 18767 | static const char * |
ed2dc618 SM |
18768 | read_indirect_string_from_dwz (struct objfile *objfile, struct dwz_file *dwz, |
18769 | LONGEST str_offset) | |
36586728 | 18770 | { |
96b79293 | 18771 | dwz->str.read (objfile); |
36586728 TT |
18772 | |
18773 | if (dwz->str.buffer == NULL) | |
18774 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
18775 | "section [in module %s]"), | |
00f93c44 | 18776 | bfd_get_filename (dwz->dwz_bfd.get ())); |
36586728 TT |
18777 | if (str_offset >= dwz->str.size) |
18778 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
18779 | ".debug_str section [in module %s]"), | |
00f93c44 | 18780 | bfd_get_filename (dwz->dwz_bfd.get ())); |
36586728 TT |
18781 | gdb_assert (HOST_CHAR_BIT == 8); |
18782 | if (dwz->str.buffer[str_offset] == '\0') | |
18783 | return NULL; | |
d521ce57 | 18784 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
18785 | } |
18786 | ||
43988095 JK |
18787 | /* Return pointer to string at .debug_str offset as read from BUF. |
18788 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
18789 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
18790 | ||
d521ce57 | 18791 | static const char * |
ed2dc618 SM |
18792 | read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, |
18793 | const gdb_byte *buf, | |
cf2c3c16 TT |
18794 | const struct comp_unit_head *cu_header, |
18795 | unsigned int *bytes_read_ptr) | |
18796 | { | |
8266302d | 18797 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
cf2c3c16 | 18798 | |
ed2dc618 | 18799 | return read_indirect_string_at_offset (dwarf2_per_objfile, abfd, str_offset); |
cf2c3c16 TT |
18800 | } |
18801 | ||
43988095 JK |
18802 | /* Return pointer to string at .debug_line_str offset as read from BUF. |
18803 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
18804 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
18805 | ||
18806 | static const char * | |
ed2dc618 SM |
18807 | read_indirect_line_string (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18808 | bfd *abfd, const gdb_byte *buf, | |
43988095 JK |
18809 | const struct comp_unit_head *cu_header, |
18810 | unsigned int *bytes_read_ptr) | |
18811 | { | |
8266302d | 18812 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
43988095 | 18813 | |
ed2dc618 SM |
18814 | return read_indirect_line_string_at_offset (dwarf2_per_objfile, abfd, |
18815 | str_offset); | |
43988095 JK |
18816 | } |
18817 | ||
3019eac3 | 18818 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 18819 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
18820 | ADDR_SIZE is the size of addresses from the CU header. */ |
18821 | ||
18822 | static CORE_ADDR | |
ed2dc618 | 18823 | read_addr_index_1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e AT |
18824 | unsigned int addr_index, gdb::optional<ULONGEST> addr_base, |
18825 | int addr_size) | |
3019eac3 DE |
18826 | { |
18827 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18828 | bfd *abfd = objfile->obfd; | |
18829 | const gdb_byte *info_ptr; | |
18a8505e | 18830 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 18831 | |
96b79293 | 18832 | dwarf2_per_objfile->addr.read (objfile); |
3019eac3 DE |
18833 | if (dwarf2_per_objfile->addr.buffer == NULL) |
18834 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 18835 | objfile_name (objfile)); |
18a8505e AT |
18836 | if (addr_base_or_zero + addr_index * addr_size |
18837 | >= dwarf2_per_objfile->addr.size) | |
3019eac3 DE |
18838 | error (_("DW_FORM_addr_index pointing outside of " |
18839 | ".debug_addr section [in module %s]"), | |
4262abfb | 18840 | objfile_name (objfile)); |
3019eac3 | 18841 | info_ptr = (dwarf2_per_objfile->addr.buffer |
18a8505e | 18842 | + addr_base_or_zero + addr_index * addr_size); |
3019eac3 DE |
18843 | if (addr_size == 4) |
18844 | return bfd_get_32 (abfd, info_ptr); | |
18845 | else | |
18846 | return bfd_get_64 (abfd, info_ptr); | |
18847 | } | |
18848 | ||
18849 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
18850 | ||
18851 | static CORE_ADDR | |
18852 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
18853 | { | |
518817b3 SM |
18854 | return read_addr_index_1 (cu->per_cu->dwarf2_per_objfile, addr_index, |
18855 | cu->addr_base, cu->header.addr_size); | |
3019eac3 DE |
18856 | } |
18857 | ||
18858 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
18859 | ||
18860 | static CORE_ADDR | |
d521ce57 | 18861 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
18862 | unsigned int *bytes_read) |
18863 | { | |
518817b3 | 18864 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
3019eac3 DE |
18865 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
18866 | ||
18867 | return read_addr_index (cu, addr_index); | |
18868 | } | |
18869 | ||
450a1bfc | 18870 | /* See read.h. */ |
3019eac3 DE |
18871 | |
18872 | CORE_ADDR | |
450a1bfc | 18873 | dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu, unsigned int addr_index) |
3019eac3 | 18874 | { |
ed2dc618 | 18875 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 18876 | struct dwarf2_cu *cu = per_cu->cu; |
18a8505e | 18877 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
18878 | int addr_size; |
18879 | ||
3019eac3 DE |
18880 | /* We need addr_base and addr_size. |
18881 | If we don't have PER_CU->cu, we have to get it. | |
18882 | Nasty, but the alternative is storing the needed info in PER_CU, | |
18883 | which at this point doesn't seem justified: it's not clear how frequently | |
18884 | it would get used and it would increase the size of every PER_CU. | |
18885 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
18886 | so we're not in uncharted territory here. | |
18887 | Alas we need to be a bit more complicated as addr_base is contained | |
18888 | in the DIE. | |
18889 | ||
18890 | We don't need to read the entire CU(/TU). | |
18891 | We just need the header and top level die. | |
a1b64ce1 | 18892 | |
3019eac3 | 18893 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 18894 | For now we skip this optimization. */ |
3019eac3 DE |
18895 | |
18896 | if (cu != NULL) | |
18897 | { | |
18898 | addr_base = cu->addr_base; | |
18899 | addr_size = cu->header.addr_size; | |
18900 | } | |
18901 | else | |
18902 | { | |
6751ebae | 18903 | cutu_reader reader (per_cu, NULL, 0, false); |
c0ab21c2 TT |
18904 | addr_base = reader.cu->addr_base; |
18905 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
18906 | } |
18907 | ||
ed2dc618 SM |
18908 | return read_addr_index_1 (dwarf2_per_objfile, addr_index, addr_base, |
18909 | addr_size); | |
3019eac3 DE |
18910 | } |
18911 | ||
18a8505e AT |
18912 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
18913 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
18914 | DWO file. */ | |
3019eac3 | 18915 | |
d521ce57 | 18916 | static const char * |
18a8505e AT |
18917 | read_str_index (struct dwarf2_cu *cu, |
18918 | struct dwarf2_section_info *str_section, | |
18919 | struct dwarf2_section_info *str_offsets_section, | |
18920 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 18921 | { |
518817b3 SM |
18922 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18923 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 18924 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
c5164cbc | 18925 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 18926 | bfd *abfd = objfile->obfd; |
d521ce57 | 18927 | const gdb_byte *info_ptr; |
3019eac3 | 18928 | ULONGEST str_offset; |
cf532bd1 | 18929 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 18930 | |
96b79293 TT |
18931 | str_section->read (objfile); |
18932 | str_offsets_section->read (objfile); | |
73869dc2 | 18933 | if (str_section->buffer == NULL) |
18a8505e | 18934 | error (_("%s used without %s section" |
9d8780f0 | 18935 | " in CU at offset %s [in module %s]"), |
96b79293 | 18936 | form_name, str_section->get_name (), |
18a8505e | 18937 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 18938 | if (str_offsets_section->buffer == NULL) |
18a8505e | 18939 | error (_("%s used without %s section" |
9d8780f0 | 18940 | " in CU at offset %s [in module %s]"), |
96b79293 | 18941 | form_name, str_section->get_name (), |
18a8505e | 18942 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 18943 | info_ptr = (str_offsets_section->buffer |
18a8505e | 18944 | + str_offsets_base |
3019eac3 DE |
18945 | + str_index * cu->header.offset_size); |
18946 | if (cu->header.offset_size == 4) | |
18947 | str_offset = bfd_get_32 (abfd, info_ptr); | |
18948 | else | |
18949 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 18950 | if (str_offset >= str_section->size) |
57d63ce2 | 18951 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
18952 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
18953 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 18954 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
18955 | } |
18956 | ||
18a8505e AT |
18957 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
18958 | ||
18959 | static const char * | |
18960 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
18961 | { | |
18962 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
18963 | ? reader->cu->header.addr_size : 0; | |
18964 | return read_str_index (reader->cu, | |
18965 | &reader->dwo_file->sections.str, | |
18966 | &reader->dwo_file->sections.str_offsets, | |
18967 | str_offsets_base, str_index); | |
18968 | } | |
18969 | ||
18970 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
18971 | ||
18972 | static const char * | |
18973 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
18974 | { | |
18975 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; | |
18976 | const char *objf_name = objfile_name (objfile); | |
18977 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
18978 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
18979 | ||
18980 | if (!cu->str_offsets_base.has_value ()) | |
18981 | error (_("%s used in Fission stub without %s" | |
18982 | " in CU at offset 0x%lx [in module %s]"), | |
18983 | form_name, str_offsets_attr_name, | |
18984 | (long) cu->header.offset_size, objf_name); | |
18985 | ||
18986 | return read_str_index (cu, | |
18987 | &cu->per_cu->dwarf2_per_objfile->str, | |
18988 | &cu->per_cu->dwarf2_per_objfile->str_offsets, | |
18989 | *cu->str_offsets_base, str_index); | |
18990 | } | |
18991 | ||
3019eac3 DE |
18992 | /* Return the length of an LEB128 number in BUF. */ |
18993 | ||
18994 | static int | |
18995 | leb128_size (const gdb_byte *buf) | |
18996 | { | |
18997 | const gdb_byte *begin = buf; | |
18998 | gdb_byte byte; | |
18999 | ||
19000 | while (1) | |
19001 | { | |
19002 | byte = *buf++; | |
19003 | if ((byte & 128) == 0) | |
19004 | return buf - begin; | |
19005 | } | |
19006 | } | |
19007 | ||
c906108c | 19008 | static void |
e142c38c | 19009 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
19010 | { |
19011 | switch (lang) | |
19012 | { | |
19013 | case DW_LANG_C89: | |
76bee0cc | 19014 | case DW_LANG_C99: |
0cfd832f | 19015 | case DW_LANG_C11: |
c906108c | 19016 | case DW_LANG_C: |
d1be3247 | 19017 | case DW_LANG_UPC: |
e142c38c | 19018 | cu->language = language_c; |
c906108c | 19019 | break; |
9c37b5ae | 19020 | case DW_LANG_Java: |
c906108c | 19021 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
19022 | case DW_LANG_C_plus_plus_11: |
19023 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 19024 | cu->language = language_cplus; |
c906108c | 19025 | break; |
6aecb9c2 JB |
19026 | case DW_LANG_D: |
19027 | cu->language = language_d; | |
19028 | break; | |
c906108c SS |
19029 | case DW_LANG_Fortran77: |
19030 | case DW_LANG_Fortran90: | |
b21b22e0 | 19031 | case DW_LANG_Fortran95: |
f7de9aab MW |
19032 | case DW_LANG_Fortran03: |
19033 | case DW_LANG_Fortran08: | |
e142c38c | 19034 | cu->language = language_fortran; |
c906108c | 19035 | break; |
a766d390 DE |
19036 | case DW_LANG_Go: |
19037 | cu->language = language_go; | |
19038 | break; | |
c906108c | 19039 | case DW_LANG_Mips_Assembler: |
e142c38c | 19040 | cu->language = language_asm; |
c906108c SS |
19041 | break; |
19042 | case DW_LANG_Ada83: | |
8aaf0b47 | 19043 | case DW_LANG_Ada95: |
bc5f45f8 JB |
19044 | cu->language = language_ada; |
19045 | break; | |
72019c9c GM |
19046 | case DW_LANG_Modula2: |
19047 | cu->language = language_m2; | |
19048 | break; | |
fe8e67fd PM |
19049 | case DW_LANG_Pascal83: |
19050 | cu->language = language_pascal; | |
19051 | break; | |
22566fbd DJ |
19052 | case DW_LANG_ObjC: |
19053 | cu->language = language_objc; | |
19054 | break; | |
c44af4eb TT |
19055 | case DW_LANG_Rust: |
19056 | case DW_LANG_Rust_old: | |
19057 | cu->language = language_rust; | |
19058 | break; | |
c906108c SS |
19059 | case DW_LANG_Cobol74: |
19060 | case DW_LANG_Cobol85: | |
c906108c | 19061 | default: |
e142c38c | 19062 | cu->language = language_minimal; |
c906108c SS |
19063 | break; |
19064 | } | |
e142c38c | 19065 | cu->language_defn = language_def (cu->language); |
c906108c SS |
19066 | } |
19067 | ||
19068 | /* Return the named attribute or NULL if not there. */ | |
19069 | ||
19070 | static struct attribute * | |
e142c38c | 19071 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 19072 | { |
a48e046c | 19073 | for (;;) |
c906108c | 19074 | { |
a48e046c TT |
19075 | unsigned int i; |
19076 | struct attribute *spec = NULL; | |
19077 | ||
19078 | for (i = 0; i < die->num_attrs; ++i) | |
19079 | { | |
19080 | if (die->attrs[i].name == name) | |
19081 | return &die->attrs[i]; | |
19082 | if (die->attrs[i].name == DW_AT_specification | |
19083 | || die->attrs[i].name == DW_AT_abstract_origin) | |
19084 | spec = &die->attrs[i]; | |
19085 | } | |
19086 | ||
19087 | if (!spec) | |
19088 | break; | |
c906108c | 19089 | |
f2f0e013 | 19090 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 19091 | } |
c5aa993b | 19092 | |
c906108c SS |
19093 | return NULL; |
19094 | } | |
19095 | ||
348e048f DE |
19096 | /* Return the named attribute or NULL if not there, |
19097 | but do not follow DW_AT_specification, etc. | |
19098 | This is for use in contexts where we're reading .debug_types dies. | |
19099 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
19100 | back up the chain, and we want to go down. */ | |
19101 | ||
19102 | static struct attribute * | |
45e58e77 | 19103 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
19104 | { |
19105 | unsigned int i; | |
19106 | ||
19107 | for (i = 0; i < die->num_attrs; ++i) | |
19108 | if (die->attrs[i].name == name) | |
19109 | return &die->attrs[i]; | |
19110 | ||
19111 | return NULL; | |
19112 | } | |
19113 | ||
7d45c7c3 KB |
19114 | /* Return the string associated with a string-typed attribute, or NULL if it |
19115 | is either not found or is of an incorrect type. */ | |
19116 | ||
19117 | static const char * | |
19118 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
19119 | { | |
19120 | struct attribute *attr; | |
19121 | const char *str = NULL; | |
19122 | ||
19123 | attr = dwarf2_attr (die, name, cu); | |
19124 | ||
19125 | if (attr != NULL) | |
19126 | { | |
43988095 | 19127 | if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp |
b3340438 | 19128 | || attr->form == DW_FORM_string |
cf532bd1 | 19129 | || attr->form == DW_FORM_strx |
8fe0f950 AT |
19130 | || attr->form == DW_FORM_strx1 |
19131 | || attr->form == DW_FORM_strx2 | |
19132 | || attr->form == DW_FORM_strx3 | |
19133 | || attr->form == DW_FORM_strx4 | |
b3340438 | 19134 | || attr->form == DW_FORM_GNU_str_index |
16eb6b2d | 19135 | || attr->form == DW_FORM_GNU_strp_alt) |
7d45c7c3 KB |
19136 | str = DW_STRING (attr); |
19137 | else | |
b98664d3 | 19138 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
19139 | "DIE at %s in module %s"), |
19140 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
518817b3 | 19141 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
7d45c7c3 KB |
19142 | } |
19143 | ||
19144 | return str; | |
19145 | } | |
19146 | ||
a084a2a6 | 19147 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 19148 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
19149 | static const char * |
19150 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
19151 | { | |
19152 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
19153 | if (dwo_name == nullptr) | |
19154 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
19155 | return dwo_name; | |
19156 | } | |
19157 | ||
05cf31d1 JB |
19158 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
19159 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 19160 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
19161 | |
19162 | static int | |
19163 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
19164 | { | |
19165 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
19166 | ||
19167 | return (attr && DW_UNSND (attr)); | |
19168 | } | |
19169 | ||
3ca72b44 | 19170 | static int |
e142c38c | 19171 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 19172 | { |
05cf31d1 JB |
19173 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
19174 | which value is non-zero. However, we have to be careful with | |
19175 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
19176 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
19177 | end up accidently finding a declaration attribute that belongs | |
19178 | to a different DIE referenced by the specification attribute, | |
19179 | even though the given DIE does not have a declaration attribute. */ | |
19180 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
19181 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
19182 | } |
19183 | ||
63d06c5c | 19184 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 19185 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
19186 | containing the return value on output. If there is no |
19187 | specification, but there is an abstract origin, that is | |
19188 | returned. */ | |
63d06c5c DC |
19189 | |
19190 | static struct die_info * | |
f2f0e013 | 19191 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 19192 | { |
f2f0e013 DJ |
19193 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
19194 | *spec_cu); | |
63d06c5c | 19195 | |
edb3359d DJ |
19196 | if (spec_attr == NULL) |
19197 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
19198 | ||
63d06c5c DC |
19199 | if (spec_attr == NULL) |
19200 | return NULL; | |
19201 | else | |
f2f0e013 | 19202 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 19203 | } |
c906108c | 19204 | |
527f3840 JK |
19205 | /* Stub for free_line_header to match void * callback types. */ |
19206 | ||
19207 | static void | |
19208 | free_line_header_voidp (void *arg) | |
19209 | { | |
9a3c8263 | 19210 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 19211 | |
fff8551c | 19212 | delete lh; |
527f3840 JK |
19213 | } |
19214 | ||
83769d0b | 19215 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
19216 | |
19217 | static struct dwarf2_section_info * | |
19218 | get_debug_line_section (struct dwarf2_cu *cu) | |
19219 | { | |
19220 | struct dwarf2_section_info *section; | |
518817b3 SM |
19221 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19222 | = cu->per_cu->dwarf2_per_objfile; | |
36586728 TT |
19223 | |
19224 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
19225 | DWO file. */ | |
19226 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
19227 | section = &cu->dwo_unit->dwo_file->sections.line; | |
19228 | else if (cu->per_cu->is_dwz) | |
19229 | { | |
ed2dc618 | 19230 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
19231 | |
19232 | section = &dwz->line; | |
19233 | } | |
19234 | else | |
19235 | section = &dwarf2_per_objfile->line; | |
19236 | ||
19237 | return section; | |
19238 | } | |
19239 | ||
43988095 JK |
19240 | /* Read directory or file name entry format, starting with byte of |
19241 | format count entries, ULEB128 pairs of entry formats, ULEB128 of | |
19242 | entries count and the entries themselves in the described entry | |
19243 | format. */ | |
19244 | ||
19245 | static void | |
ed2dc618 SM |
19246 | read_formatted_entries (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19247 | bfd *abfd, const gdb_byte **bufp, | |
43988095 JK |
19248 | struct line_header *lh, |
19249 | const struct comp_unit_head *cu_header, | |
19250 | void (*callback) (struct line_header *lh, | |
19251 | const char *name, | |
ecfb656c | 19252 | dir_index d_index, |
43988095 JK |
19253 | unsigned int mod_time, |
19254 | unsigned int length)) | |
19255 | { | |
19256 | gdb_byte format_count, formati; | |
19257 | ULONGEST data_count, datai; | |
19258 | const gdb_byte *buf = *bufp; | |
19259 | const gdb_byte *format_header_data; | |
43988095 JK |
19260 | unsigned int bytes_read; |
19261 | ||
19262 | format_count = read_1_byte (abfd, buf); | |
19263 | buf += 1; | |
19264 | format_header_data = buf; | |
19265 | for (formati = 0; formati < format_count; formati++) | |
19266 | { | |
19267 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
19268 | buf += bytes_read; | |
19269 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
19270 | buf += bytes_read; | |
19271 | } | |
19272 | ||
19273 | data_count = read_unsigned_leb128 (abfd, buf, &bytes_read); | |
19274 | buf += bytes_read; | |
19275 | for (datai = 0; datai < data_count; datai++) | |
19276 | { | |
19277 | const gdb_byte *format = format_header_data; | |
19278 | struct file_entry fe; | |
19279 | ||
43988095 JK |
19280 | for (formati = 0; formati < format_count; formati++) |
19281 | { | |
ecfb656c | 19282 | ULONGEST content_type = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 19283 | format += bytes_read; |
43988095 | 19284 | |
ecfb656c | 19285 | ULONGEST form = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 19286 | format += bytes_read; |
ecfb656c PA |
19287 | |
19288 | gdb::optional<const char *> string; | |
19289 | gdb::optional<unsigned int> uint; | |
19290 | ||
43988095 JK |
19291 | switch (form) |
19292 | { | |
19293 | case DW_FORM_string: | |
ecfb656c | 19294 | string.emplace (read_direct_string (abfd, buf, &bytes_read)); |
43988095 JK |
19295 | buf += bytes_read; |
19296 | break; | |
19297 | ||
19298 | case DW_FORM_line_strp: | |
ed2dc618 SM |
19299 | string.emplace (read_indirect_line_string (dwarf2_per_objfile, |
19300 | abfd, buf, | |
ecfb656c PA |
19301 | cu_header, |
19302 | &bytes_read)); | |
43988095 JK |
19303 | buf += bytes_read; |
19304 | break; | |
19305 | ||
19306 | case DW_FORM_data1: | |
ecfb656c | 19307 | uint.emplace (read_1_byte (abfd, buf)); |
43988095 JK |
19308 | buf += 1; |
19309 | break; | |
19310 | ||
19311 | case DW_FORM_data2: | |
ecfb656c | 19312 | uint.emplace (read_2_bytes (abfd, buf)); |
43988095 JK |
19313 | buf += 2; |
19314 | break; | |
19315 | ||
19316 | case DW_FORM_data4: | |
ecfb656c | 19317 | uint.emplace (read_4_bytes (abfd, buf)); |
43988095 JK |
19318 | buf += 4; |
19319 | break; | |
19320 | ||
19321 | case DW_FORM_data8: | |
ecfb656c | 19322 | uint.emplace (read_8_bytes (abfd, buf)); |
43988095 JK |
19323 | buf += 8; |
19324 | break; | |
19325 | ||
7ba99d21 AT |
19326 | case DW_FORM_data16: |
19327 | /* This is used for MD5, but file_entry does not record MD5s. */ | |
19328 | buf += 16; | |
19329 | break; | |
19330 | ||
43988095 | 19331 | case DW_FORM_udata: |
ecfb656c | 19332 | uint.emplace (read_unsigned_leb128 (abfd, buf, &bytes_read)); |
43988095 JK |
19333 | buf += bytes_read; |
19334 | break; | |
19335 | ||
19336 | case DW_FORM_block: | |
19337 | /* It is valid only for DW_LNCT_timestamp which is ignored by | |
19338 | current GDB. */ | |
19339 | break; | |
19340 | } | |
ecfb656c PA |
19341 | |
19342 | switch (content_type) | |
19343 | { | |
19344 | case DW_LNCT_path: | |
19345 | if (string.has_value ()) | |
19346 | fe.name = *string; | |
19347 | break; | |
19348 | case DW_LNCT_directory_index: | |
19349 | if (uint.has_value ()) | |
19350 | fe.d_index = (dir_index) *uint; | |
19351 | break; | |
19352 | case DW_LNCT_timestamp: | |
19353 | if (uint.has_value ()) | |
19354 | fe.mod_time = *uint; | |
19355 | break; | |
19356 | case DW_LNCT_size: | |
19357 | if (uint.has_value ()) | |
19358 | fe.length = *uint; | |
19359 | break; | |
19360 | case DW_LNCT_MD5: | |
19361 | break; | |
19362 | default: | |
b98664d3 | 19363 | complaint (_("Unknown format content type %s"), |
ecfb656c PA |
19364 | pulongest (content_type)); |
19365 | } | |
43988095 JK |
19366 | } |
19367 | ||
ecfb656c | 19368 | callback (lh, fe.name, fe.d_index, fe.mod_time, fe.length); |
43988095 JK |
19369 | } |
19370 | ||
19371 | *bufp = buf; | |
19372 | } | |
19373 | ||
debd256d | 19374 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 19375 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 19376 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
19377 | Returns NULL if there is a problem reading the header, e.g., if it |
19378 | has a version we don't understand. | |
debd256d JB |
19379 | |
19380 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
19381 | the returned object point into the dwarf line section buffer, |
19382 | and must not be freed. */ | |
ae2de4f8 | 19383 | |
fff8551c | 19384 | static line_header_up |
9c541725 | 19385 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 19386 | { |
d521ce57 | 19387 | const gdb_byte *line_ptr; |
c764a876 | 19388 | unsigned int bytes_read, offset_size; |
debd256d | 19389 | int i; |
d521ce57 | 19390 | const char *cur_dir, *cur_file; |
3019eac3 DE |
19391 | struct dwarf2_section_info *section; |
19392 | bfd *abfd; | |
518817b3 SM |
19393 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19394 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 19395 | |
36586728 | 19396 | section = get_debug_line_section (cu); |
96b79293 | 19397 | section->read (dwarf2_per_objfile->objfile); |
3019eac3 | 19398 | if (section->buffer == NULL) |
debd256d | 19399 | { |
3019eac3 | 19400 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 19401 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 19402 | else |
b98664d3 | 19403 | complaint (_("missing .debug_line section")); |
debd256d JB |
19404 | return 0; |
19405 | } | |
19406 | ||
fceca515 DE |
19407 | /* We can't do this until we know the section is non-empty. |
19408 | Only then do we know we have such a section. */ | |
96b79293 | 19409 | abfd = section->get_bfd_owner (); |
fceca515 | 19410 | |
a738430d MK |
19411 | /* Make sure that at least there's room for the total_length field. |
19412 | That could be 12 bytes long, but we're just going to fudge that. */ | |
9c541725 | 19413 | if (to_underlying (sect_off) + 4 >= section->size) |
debd256d | 19414 | { |
4d3c2250 | 19415 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
19416 | return 0; |
19417 | } | |
19418 | ||
fff8551c | 19419 | line_header_up lh (new line_header ()); |
debd256d | 19420 | |
9c541725 | 19421 | lh->sect_off = sect_off; |
527f3840 JK |
19422 | lh->offset_in_dwz = cu->per_cu->is_dwz; |
19423 | ||
9c541725 | 19424 | line_ptr = section->buffer + to_underlying (sect_off); |
debd256d | 19425 | |
a738430d | 19426 | /* Read in the header. */ |
6e70227d | 19427 | lh->total_length = |
c764a876 DE |
19428 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
19429 | &bytes_read, &offset_size); | |
debd256d | 19430 | line_ptr += bytes_read; |
7ba99d21 AT |
19431 | |
19432 | const gdb_byte *start_here = line_ptr; | |
19433 | ||
3019eac3 | 19434 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 19435 | { |
4d3c2250 | 19436 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
19437 | return 0; |
19438 | } | |
7ba99d21 | 19439 | lh->statement_program_end = start_here + lh->total_length; |
debd256d JB |
19440 | lh->version = read_2_bytes (abfd, line_ptr); |
19441 | line_ptr += 2; | |
43988095 | 19442 | if (lh->version > 5) |
cd366ee8 DE |
19443 | { |
19444 | /* This is a version we don't understand. The format could have | |
19445 | changed in ways we don't handle properly so just punt. */ | |
b98664d3 | 19446 | complaint (_("unsupported version in .debug_line section")); |
cd366ee8 DE |
19447 | return NULL; |
19448 | } | |
43988095 JK |
19449 | if (lh->version >= 5) |
19450 | { | |
19451 | gdb_byte segment_selector_size; | |
19452 | ||
19453 | /* Skip address size. */ | |
19454 | read_1_byte (abfd, line_ptr); | |
19455 | line_ptr += 1; | |
19456 | ||
19457 | segment_selector_size = read_1_byte (abfd, line_ptr); | |
19458 | line_ptr += 1; | |
19459 | if (segment_selector_size != 0) | |
19460 | { | |
b98664d3 | 19461 | complaint (_("unsupported segment selector size %u " |
43988095 JK |
19462 | "in .debug_line section"), |
19463 | segment_selector_size); | |
19464 | return NULL; | |
19465 | } | |
19466 | } | |
24aa364d | 19467 | lh->header_length = read_offset (abfd, line_ptr, offset_size); |
c764a876 | 19468 | line_ptr += offset_size; |
7ba99d21 | 19469 | lh->statement_program_start = line_ptr + lh->header_length; |
debd256d JB |
19470 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
19471 | line_ptr += 1; | |
2dc7f7b3 TT |
19472 | if (lh->version >= 4) |
19473 | { | |
19474 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
19475 | line_ptr += 1; | |
19476 | } | |
19477 | else | |
19478 | lh->maximum_ops_per_instruction = 1; | |
19479 | ||
19480 | if (lh->maximum_ops_per_instruction == 0) | |
19481 | { | |
19482 | lh->maximum_ops_per_instruction = 1; | |
b98664d3 | 19483 | complaint (_("invalid maximum_ops_per_instruction " |
3e43a32a | 19484 | "in `.debug_line' section")); |
2dc7f7b3 TT |
19485 | } |
19486 | ||
debd256d JB |
19487 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
19488 | line_ptr += 1; | |
19489 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
19490 | line_ptr += 1; | |
19491 | lh->line_range = read_1_byte (abfd, line_ptr); | |
19492 | line_ptr += 1; | |
19493 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
19494 | line_ptr += 1; | |
fff8551c | 19495 | lh->standard_opcode_lengths.reset (new unsigned char[lh->opcode_base]); |
debd256d JB |
19496 | |
19497 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
19498 | for (i = 1; i < lh->opcode_base; ++i) | |
19499 | { | |
19500 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
19501 | line_ptr += 1; | |
19502 | } | |
19503 | ||
43988095 | 19504 | if (lh->version >= 5) |
debd256d | 19505 | { |
43988095 | 19506 | /* Read directory table. */ |
ed2dc618 SM |
19507 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
19508 | &cu->header, | |
b926417a | 19509 | [] (struct line_header *header, const char *name, |
ecfb656c | 19510 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
19511 | unsigned int length) |
19512 | { | |
b926417a | 19513 | header->add_include_dir (name); |
fff8551c | 19514 | }); |
debd256d | 19515 | |
43988095 | 19516 | /* Read file name table. */ |
ed2dc618 SM |
19517 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
19518 | &cu->header, | |
b926417a | 19519 | [] (struct line_header *header, const char *name, |
ecfb656c | 19520 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
19521 | unsigned int length) |
19522 | { | |
b926417a | 19523 | header->add_file_name (name, d_index, mod_time, length); |
fff8551c | 19524 | }); |
43988095 JK |
19525 | } |
19526 | else | |
debd256d | 19527 | { |
43988095 JK |
19528 | /* Read directory table. */ |
19529 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
19530 | { | |
19531 | line_ptr += bytes_read; | |
fff8551c | 19532 | lh->add_include_dir (cur_dir); |
43988095 | 19533 | } |
debd256d JB |
19534 | line_ptr += bytes_read; |
19535 | ||
43988095 JK |
19536 | /* Read file name table. */ |
19537 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
19538 | { | |
ecfb656c PA |
19539 | unsigned int mod_time, length; |
19540 | dir_index d_index; | |
43988095 JK |
19541 | |
19542 | line_ptr += bytes_read; | |
ecfb656c | 19543 | d_index = (dir_index) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
43988095 JK |
19544 | line_ptr += bytes_read; |
19545 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
19546 | line_ptr += bytes_read; | |
19547 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
19548 | line_ptr += bytes_read; | |
19549 | ||
ecfb656c | 19550 | lh->add_file_name (cur_file, d_index, mod_time, length); |
43988095 JK |
19551 | } |
19552 | line_ptr += bytes_read; | |
debd256d | 19553 | } |
debd256d | 19554 | |
3019eac3 | 19555 | if (line_ptr > (section->buffer + section->size)) |
b98664d3 | 19556 | complaint (_("line number info header doesn't " |
3e43a32a | 19557 | "fit in `.debug_line' section")); |
debd256d | 19558 | |
debd256d JB |
19559 | return lh; |
19560 | } | |
c906108c | 19561 | |
c6da4cef | 19562 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 19563 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 19564 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
19565 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
19566 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 19567 | |
d521ce57 | 19568 | static const char * |
7ba99d21 | 19569 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 19570 | const dwarf2_psymtab *pst, |
c89b44cd TT |
19571 | const char *comp_dir, |
19572 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 19573 | { |
d521ce57 TT |
19574 | const char *include_name = fe.name; |
19575 | const char *include_name_to_compare = include_name; | |
72b9f47f | 19576 | const char *pst_filename; |
c6da4cef DE |
19577 | int file_is_pst; |
19578 | ||
8c43009f | 19579 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 19580 | |
c89b44cd | 19581 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
19582 | if (!IS_ABSOLUTE_PATH (include_name) |
19583 | && (dir_name != NULL || comp_dir != NULL)) | |
19584 | { | |
19585 | /* Avoid creating a duplicate psymtab for PST. | |
19586 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
19587 | Before we do the comparison, however, we need to account | |
19588 | for DIR_NAME and COMP_DIR. | |
19589 | First prepend dir_name (if non-NULL). If we still don't | |
19590 | have an absolute path prepend comp_dir (if non-NULL). | |
19591 | However, the directory we record in the include-file's | |
19592 | psymtab does not contain COMP_DIR (to match the | |
19593 | corresponding symtab(s)). | |
19594 | ||
19595 | Example: | |
19596 | ||
19597 | bash$ cd /tmp | |
19598 | bash$ gcc -g ./hello.c | |
19599 | include_name = "hello.c" | |
19600 | dir_name = "." | |
19601 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
19602 | DW_AT_name = "./hello.c" |
19603 | ||
19604 | */ | |
c6da4cef DE |
19605 | |
19606 | if (dir_name != NULL) | |
19607 | { | |
c89b44cd TT |
19608 | name_holder->reset (concat (dir_name, SLASH_STRING, |
19609 | include_name, (char *) NULL)); | |
19610 | include_name = name_holder->get (); | |
c6da4cef | 19611 | include_name_to_compare = include_name; |
c6da4cef DE |
19612 | } |
19613 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
19614 | { | |
c89b44cd TT |
19615 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
19616 | include_name, (char *) NULL)); | |
19617 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
19618 | } |
19619 | } | |
19620 | ||
19621 | pst_filename = pst->filename; | |
c89b44cd | 19622 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
19623 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
19624 | { | |
c89b44cd TT |
19625 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
19626 | pst_filename, (char *) NULL)); | |
19627 | pst_filename = copied_name.get (); | |
c6da4cef DE |
19628 | } |
19629 | ||
1e3fad37 | 19630 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 19631 | |
c6da4cef DE |
19632 | if (file_is_pst) |
19633 | return NULL; | |
19634 | return include_name; | |
19635 | } | |
19636 | ||
d9b3de22 DE |
19637 | /* State machine to track the state of the line number program. */ |
19638 | ||
6f77053d | 19639 | class lnp_state_machine |
d9b3de22 | 19640 | { |
6f77053d PA |
19641 | public: |
19642 | /* Initialize a machine state for the start of a line number | |
19643 | program. */ | |
804d2729 TT |
19644 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
19645 | bool record_lines_p); | |
6f77053d | 19646 | |
8c43009f PA |
19647 | file_entry *current_file () |
19648 | { | |
19649 | /* lh->file_names is 0-based, but the file name numbers in the | |
19650 | statement program are 1-based. */ | |
6f77053d PA |
19651 | return m_line_header->file_name_at (m_file); |
19652 | } | |
19653 | ||
19654 | /* Record the line in the state machine. END_SEQUENCE is true if | |
19655 | we're processing the end of a sequence. */ | |
19656 | void record_line (bool end_sequence); | |
19657 | ||
7ab6656f OJ |
19658 | /* Check ADDRESS is zero and less than UNRELOCATED_LOWPC and if true |
19659 | nop-out rest of the lines in this sequence. */ | |
6f77053d PA |
19660 | void check_line_address (struct dwarf2_cu *cu, |
19661 | const gdb_byte *line_ptr, | |
7ab6656f | 19662 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
19663 | |
19664 | void handle_set_discriminator (unsigned int discriminator) | |
19665 | { | |
19666 | m_discriminator = discriminator; | |
19667 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
19668 | } | |
19669 | ||
19670 | /* Handle DW_LNE_set_address. */ | |
19671 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
19672 | { | |
19673 | m_op_index = 0; | |
19674 | address += baseaddr; | |
19675 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
19676 | } | |
19677 | ||
19678 | /* Handle DW_LNS_advance_pc. */ | |
19679 | void handle_advance_pc (CORE_ADDR adjust); | |
19680 | ||
19681 | /* Handle a special opcode. */ | |
19682 | void handle_special_opcode (unsigned char op_code); | |
19683 | ||
19684 | /* Handle DW_LNS_advance_line. */ | |
19685 | void handle_advance_line (int line_delta) | |
19686 | { | |
19687 | advance_line (line_delta); | |
19688 | } | |
19689 | ||
19690 | /* Handle DW_LNS_set_file. */ | |
19691 | void handle_set_file (file_name_index file); | |
19692 | ||
19693 | /* Handle DW_LNS_negate_stmt. */ | |
19694 | void handle_negate_stmt () | |
19695 | { | |
19696 | m_is_stmt = !m_is_stmt; | |
19697 | } | |
19698 | ||
19699 | /* Handle DW_LNS_const_add_pc. */ | |
19700 | void handle_const_add_pc (); | |
19701 | ||
19702 | /* Handle DW_LNS_fixed_advance_pc. */ | |
19703 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
19704 | { | |
19705 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
19706 | m_op_index = 0; | |
19707 | } | |
19708 | ||
19709 | /* Handle DW_LNS_copy. */ | |
19710 | void handle_copy () | |
19711 | { | |
19712 | record_line (false); | |
19713 | m_discriminator = 0; | |
19714 | } | |
19715 | ||
19716 | /* Handle DW_LNE_end_sequence. */ | |
19717 | void handle_end_sequence () | |
19718 | { | |
804d2729 | 19719 | m_currently_recording_lines = true; |
6f77053d PA |
19720 | } |
19721 | ||
19722 | private: | |
19723 | /* Advance the line by LINE_DELTA. */ | |
19724 | void advance_line (int line_delta) | |
19725 | { | |
19726 | m_line += line_delta; | |
19727 | ||
19728 | if (line_delta != 0) | |
19729 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
19730 | } |
19731 | ||
804d2729 TT |
19732 | struct dwarf2_cu *m_cu; |
19733 | ||
6f77053d PA |
19734 | gdbarch *m_gdbarch; |
19735 | ||
19736 | /* True if we're recording lines. | |
19737 | Otherwise we're building partial symtabs and are just interested in | |
19738 | finding include files mentioned by the line number program. */ | |
19739 | bool m_record_lines_p; | |
19740 | ||
8c43009f | 19741 | /* The line number header. */ |
6f77053d | 19742 | line_header *m_line_header; |
8c43009f | 19743 | |
6f77053d PA |
19744 | /* These are part of the standard DWARF line number state machine, |
19745 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 19746 | |
6f77053d | 19747 | unsigned char m_op_index = 0; |
7ba99d21 AT |
19748 | /* The line table index of the current file. */ |
19749 | file_name_index m_file = 1; | |
6f77053d PA |
19750 | unsigned int m_line = 1; |
19751 | ||
19752 | /* These are initialized in the constructor. */ | |
19753 | ||
19754 | CORE_ADDR m_address; | |
19755 | bool m_is_stmt; | |
19756 | unsigned int m_discriminator; | |
d9b3de22 DE |
19757 | |
19758 | /* Additional bits of state we need to track. */ | |
19759 | ||
19760 | /* The last file that we called dwarf2_start_subfile for. | |
19761 | This is only used for TLLs. */ | |
6f77053d | 19762 | unsigned int m_last_file = 0; |
d9b3de22 | 19763 | /* The last file a line number was recorded for. */ |
6f77053d | 19764 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 19765 | |
804d2729 TT |
19766 | /* When true, record the lines we decode. */ |
19767 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
19768 | |
19769 | /* The last line number that was recorded, used to coalesce | |
19770 | consecutive entries for the same line. This can happen, for | |
19771 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
19772 | unsigned int m_last_line = 0; |
19773 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 19774 | }; |
d9b3de22 | 19775 | |
6f77053d PA |
19776 | void |
19777 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
19778 | { | |
19779 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
19780 | / m_line_header->maximum_ops_per_instruction) | |
19781 | * m_line_header->minimum_instruction_length); | |
19782 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
19783 | m_op_index = ((m_op_index + adjust) | |
19784 | % m_line_header->maximum_ops_per_instruction); | |
19785 | } | |
d9b3de22 | 19786 | |
6f77053d PA |
19787 | void |
19788 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 19789 | { |
6f77053d | 19790 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
258bf0ee RB |
19791 | unsigned char adj_opcode_d = adj_opcode / m_line_header->line_range; |
19792 | unsigned char adj_opcode_r = adj_opcode % m_line_header->line_range; | |
19793 | CORE_ADDR addr_adj = (((m_op_index + adj_opcode_d) | |
6f77053d PA |
19794 | / m_line_header->maximum_ops_per_instruction) |
19795 | * m_line_header->minimum_instruction_length); | |
19796 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
258bf0ee | 19797 | m_op_index = ((m_op_index + adj_opcode_d) |
6f77053d | 19798 | % m_line_header->maximum_ops_per_instruction); |
d9b3de22 | 19799 | |
258bf0ee | 19800 | int line_delta = m_line_header->line_base + adj_opcode_r; |
6f77053d PA |
19801 | advance_line (line_delta); |
19802 | record_line (false); | |
19803 | m_discriminator = 0; | |
19804 | } | |
d9b3de22 | 19805 | |
6f77053d PA |
19806 | void |
19807 | lnp_state_machine::handle_set_file (file_name_index file) | |
19808 | { | |
19809 | m_file = file; | |
19810 | ||
19811 | const file_entry *fe = current_file (); | |
19812 | if (fe == NULL) | |
19813 | dwarf2_debug_line_missing_file_complaint (); | |
19814 | else if (m_record_lines_p) | |
19815 | { | |
19816 | const char *dir = fe->include_dir (m_line_header); | |
19817 | ||
c24bdb02 | 19818 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 19819 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 19820 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
19821 | } |
19822 | } | |
19823 | ||
19824 | void | |
19825 | lnp_state_machine::handle_const_add_pc () | |
19826 | { | |
19827 | CORE_ADDR adjust | |
19828 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
19829 | ||
19830 | CORE_ADDR addr_adj | |
19831 | = (((m_op_index + adjust) | |
19832 | / m_line_header->maximum_ops_per_instruction) | |
19833 | * m_line_header->minimum_instruction_length); | |
19834 | ||
19835 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
19836 | m_op_index = ((m_op_index + adjust) | |
19837 | % m_line_header->maximum_ops_per_instruction); | |
19838 | } | |
d9b3de22 | 19839 | |
a05a36a5 DE |
19840 | /* Return non-zero if we should add LINE to the line number table. |
19841 | LINE is the line to add, LAST_LINE is the last line that was added, | |
19842 | LAST_SUBFILE is the subfile for LAST_LINE. | |
19843 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
19844 | had a non-zero discriminator. | |
19845 | ||
19846 | We have to be careful in the presence of discriminators. | |
19847 | E.g., for this line: | |
19848 | ||
19849 | for (i = 0; i < 100000; i++); | |
19850 | ||
19851 | clang can emit four line number entries for that one line, | |
19852 | each with a different discriminator. | |
19853 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
19854 | ||
19855 | However, we want gdb to coalesce all four entries into one. | |
19856 | Otherwise the user could stepi into the middle of the line and | |
19857 | gdb would get confused about whether the pc really was in the | |
19858 | middle of the line. | |
19859 | ||
19860 | Things are further complicated by the fact that two consecutive | |
19861 | line number entries for the same line is a heuristic used by gcc | |
19862 | to denote the end of the prologue. So we can't just discard duplicate | |
19863 | entries, we have to be selective about it. The heuristic we use is | |
19864 | that we only collapse consecutive entries for the same line if at least | |
19865 | one of those entries has a non-zero discriminator. PR 17276. | |
19866 | ||
19867 | Note: Addresses in the line number state machine can never go backwards | |
19868 | within one sequence, thus this coalescing is ok. */ | |
19869 | ||
19870 | static int | |
804d2729 TT |
19871 | dwarf_record_line_p (struct dwarf2_cu *cu, |
19872 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
19873 | int line_has_non_zero_discriminator, |
19874 | struct subfile *last_subfile) | |
19875 | { | |
c24bdb02 | 19876 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
19877 | return 1; |
19878 | if (line != last_line) | |
19879 | return 1; | |
19880 | /* Same line for the same file that we've seen already. | |
19881 | As a last check, for pr 17276, only record the line if the line | |
19882 | has never had a non-zero discriminator. */ | |
19883 | if (!line_has_non_zero_discriminator) | |
19884 | return 1; | |
19885 | return 0; | |
19886 | } | |
19887 | ||
804d2729 TT |
19888 | /* Use the CU's builder to record line number LINE beginning at |
19889 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
19890 | |
19891 | static void | |
d9b3de22 DE |
19892 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
19893 | unsigned int line, CORE_ADDR address, | |
804d2729 | 19894 | struct dwarf2_cu *cu) |
252a6764 DE |
19895 | { |
19896 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
19897 | ||
27e0867f DE |
19898 | if (dwarf_line_debug) |
19899 | { | |
19900 | fprintf_unfiltered (gdb_stdlog, | |
19901 | "Recording line %u, file %s, address %s\n", | |
19902 | line, lbasename (subfile->name), | |
19903 | paddress (gdbarch, address)); | |
19904 | } | |
19905 | ||
804d2729 | 19906 | if (cu != nullptr) |
c24bdb02 | 19907 | cu->get_builder ()->record_line (subfile, line, addr); |
252a6764 DE |
19908 | } |
19909 | ||
19910 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
19911 | Mark the end of a set of line number records. | |
d9b3de22 | 19912 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
19913 | If SUBFILE is NULL the request is ignored. */ |
19914 | ||
19915 | static void | |
19916 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 19917 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 19918 | { |
27e0867f DE |
19919 | if (subfile == NULL) |
19920 | return; | |
19921 | ||
19922 | if (dwarf_line_debug) | |
19923 | { | |
19924 | fprintf_unfiltered (gdb_stdlog, | |
19925 | "Finishing current line, file %s, address %s\n", | |
19926 | lbasename (subfile->name), | |
19927 | paddress (gdbarch, address)); | |
19928 | } | |
19929 | ||
804d2729 | 19930 | dwarf_record_line_1 (gdbarch, subfile, 0, address, cu); |
d9b3de22 DE |
19931 | } |
19932 | ||
6f77053d PA |
19933 | void |
19934 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 19935 | { |
d9b3de22 DE |
19936 | if (dwarf_line_debug) |
19937 | { | |
19938 | fprintf_unfiltered (gdb_stdlog, | |
19939 | "Processing actual line %u: file %u," | |
94a72be7 | 19940 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 19941 | m_line, m_file, |
6f77053d | 19942 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
19943 | m_is_stmt, m_discriminator, |
19944 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
19945 | } |
19946 | ||
6f77053d | 19947 | file_entry *fe = current_file (); |
8c43009f PA |
19948 | |
19949 | if (fe == NULL) | |
d9b3de22 DE |
19950 | dwarf2_debug_line_missing_file_complaint (); |
19951 | /* For now we ignore lines not starting on an instruction boundary. | |
19952 | But not when processing end_sequence for compatibility with the | |
19953 | previous version of the code. */ | |
6f77053d | 19954 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 19955 | { |
8c43009f | 19956 | fe->included_p = 1; |
94a72be7 AB |
19957 | if (m_record_lines_p |
19958 | && (producer_is_codewarrior (m_cu) || m_is_stmt || end_sequence)) | |
d9b3de22 | 19959 | { |
c24bdb02 | 19960 | if (m_last_subfile != m_cu->get_builder ()->get_current_subfile () |
804d2729 | 19961 | || end_sequence) |
d9b3de22 | 19962 | { |
804d2729 TT |
19963 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
19964 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
19965 | } |
19966 | ||
19967 | if (!end_sequence) | |
19968 | { | |
804d2729 | 19969 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
19970 | m_line_has_non_zero_discriminator, |
19971 | m_last_subfile)) | |
d9b3de22 | 19972 | { |
c24bdb02 | 19973 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 19974 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 19975 | builder->get_current_subfile (), |
6f77053d | 19976 | m_line, m_address, |
804d2729 | 19977 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 19978 | } |
c24bdb02 | 19979 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 19980 | m_last_line = m_line; |
d9b3de22 DE |
19981 | } |
19982 | } | |
19983 | } | |
19984 | } | |
19985 | ||
804d2729 TT |
19986 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
19987 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 19988 | { |
804d2729 | 19989 | m_cu = cu; |
6f77053d PA |
19990 | m_gdbarch = arch; |
19991 | m_record_lines_p = record_lines_p; | |
19992 | m_line_header = lh; | |
d9b3de22 | 19993 | |
804d2729 | 19994 | m_currently_recording_lines = true; |
d9b3de22 | 19995 | |
d9b3de22 DE |
19996 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
19997 | was a line entry for it so that the backend has a chance to adjust it | |
19998 | and also record it in case it needs it. This is currently used by MIPS | |
19999 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
20000 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
20001 | m_is_stmt = lh->default_is_stmt; | |
20002 | m_discriminator = 0; | |
252a6764 DE |
20003 | } |
20004 | ||
6f77053d PA |
20005 | void |
20006 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
20007 | const gdb_byte *line_ptr, | |
7ab6656f | 20008 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 20009 | { |
7ab6656f OJ |
20010 | /* If ADDRESS < UNRELOCATED_LOWPC then it's not a usable value, it's outside |
20011 | the pc range of the CU. However, we restrict the test to only ADDRESS | |
20012 | values of zero to preserve GDB's previous behaviour which is to handle | |
20013 | the specific case of a function being GC'd by the linker. */ | |
924c2928 | 20014 | |
7ab6656f | 20015 | if (address == 0 && address < unrelocated_lowpc) |
924c2928 DE |
20016 | { |
20017 | /* This line table is for a function which has been | |
20018 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
20019 | ||
518817b3 | 20020 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
924c2928 DE |
20021 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
20022 | ||
b98664d3 | 20023 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 20024 | line_offset, objfile_name (objfile)); |
804d2729 TT |
20025 | m_currently_recording_lines = false; |
20026 | /* Note: m_currently_recording_lines is left as false until we see | |
20027 | DW_LNE_end_sequence. */ | |
924c2928 DE |
20028 | } |
20029 | } | |
20030 | ||
f3f5162e | 20031 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
20032 | Process the line number information in LH. |
20033 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
20034 | program in order to set included_p for every referenced header. */ | |
debd256d | 20035 | |
c906108c | 20036 | static void |
43f3e411 DE |
20037 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
20038 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 20039 | { |
d521ce57 TT |
20040 | const gdb_byte *line_ptr, *extended_end; |
20041 | const gdb_byte *line_end; | |
a8c50c1f | 20042 | unsigned int bytes_read, extended_len; |
699ca60a | 20043 | unsigned char op_code, extended_op; |
e142c38c | 20044 | CORE_ADDR baseaddr; |
518817b3 | 20045 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 20046 | bfd *abfd = objfile->obfd; |
fbf65064 | 20047 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
6f77053d PA |
20048 | /* True if we're recording line info (as opposed to building partial |
20049 | symtabs and just interested in finding include files mentioned by | |
20050 | the line number program). */ | |
20051 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 20052 | |
b3b3bada | 20053 | baseaddr = objfile->text_section_offset (); |
c906108c | 20054 | |
debd256d JB |
20055 | line_ptr = lh->statement_program_start; |
20056 | line_end = lh->statement_program_end; | |
c906108c SS |
20057 | |
20058 | /* Read the statement sequences until there's nothing left. */ | |
20059 | while (line_ptr < line_end) | |
20060 | { | |
6f77053d PA |
20061 | /* The DWARF line number program state machine. Reset the state |
20062 | machine at the start of each sequence. */ | |
804d2729 | 20063 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 20064 | bool end_sequence = false; |
d9b3de22 | 20065 | |
8c43009f | 20066 | if (record_lines_p) |
c906108c | 20067 | { |
8c43009f PA |
20068 | /* Start a subfile for the current file of the state |
20069 | machine. */ | |
20070 | const file_entry *fe = state_machine.current_file (); | |
20071 | ||
20072 | if (fe != NULL) | |
804d2729 | 20073 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
20074 | } |
20075 | ||
a738430d | 20076 | /* Decode the table. */ |
d9b3de22 | 20077 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
20078 | { |
20079 | op_code = read_1_byte (abfd, line_ptr); | |
20080 | line_ptr += 1; | |
9aa1fe7e | 20081 | |
debd256d | 20082 | if (op_code >= lh->opcode_base) |
6e70227d | 20083 | { |
8e07a239 | 20084 | /* Special opcode. */ |
6f77053d | 20085 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
20086 | } |
20087 | else switch (op_code) | |
c906108c SS |
20088 | { |
20089 | case DW_LNS_extended_op: | |
3e43a32a MS |
20090 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
20091 | &bytes_read); | |
473b7be6 | 20092 | line_ptr += bytes_read; |
a8c50c1f | 20093 | extended_end = line_ptr + extended_len; |
c906108c SS |
20094 | extended_op = read_1_byte (abfd, line_ptr); |
20095 | line_ptr += 1; | |
20096 | switch (extended_op) | |
20097 | { | |
20098 | case DW_LNE_end_sequence: | |
6f77053d PA |
20099 | state_machine.handle_end_sequence (); |
20100 | end_sequence = true; | |
c906108c SS |
20101 | break; |
20102 | case DW_LNE_set_address: | |
d9b3de22 DE |
20103 | { |
20104 | CORE_ADDR address | |
c8a7a66f | 20105 | = cu->header.read_address (abfd, line_ptr, &bytes_read); |
d9b3de22 | 20106 | line_ptr += bytes_read; |
6f77053d PA |
20107 | |
20108 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 20109 | lowpc - baseaddr, address); |
6f77053d | 20110 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 20111 | } |
c906108c SS |
20112 | break; |
20113 | case DW_LNE_define_file: | |
debd256d | 20114 | { |
d521ce57 | 20115 | const char *cur_file; |
ecfb656c PA |
20116 | unsigned int mod_time, length; |
20117 | dir_index dindex; | |
6e70227d | 20118 | |
3e43a32a MS |
20119 | cur_file = read_direct_string (abfd, line_ptr, |
20120 | &bytes_read); | |
debd256d | 20121 | line_ptr += bytes_read; |
ecfb656c | 20122 | dindex = (dir_index) |
debd256d JB |
20123 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
20124 | line_ptr += bytes_read; | |
20125 | mod_time = | |
20126 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20127 | line_ptr += bytes_read; | |
20128 | length = | |
20129 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20130 | line_ptr += bytes_read; | |
ecfb656c | 20131 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 20132 | } |
c906108c | 20133 | break; |
d0c6ba3d | 20134 | case DW_LNE_set_discriminator: |
6f77053d PA |
20135 | { |
20136 | /* The discriminator is not interesting to the | |
20137 | debugger; just ignore it. We still need to | |
20138 | check its value though: | |
20139 | if there are consecutive entries for the same | |
20140 | (non-prologue) line we want to coalesce them. | |
20141 | PR 17276. */ | |
20142 | unsigned int discr | |
20143 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20144 | line_ptr += bytes_read; | |
20145 | ||
20146 | state_machine.handle_set_discriminator (discr); | |
20147 | } | |
d0c6ba3d | 20148 | break; |
c906108c | 20149 | default: |
b98664d3 | 20150 | complaint (_("mangled .debug_line section")); |
debd256d | 20151 | return; |
c906108c | 20152 | } |
a8c50c1f DJ |
20153 | /* Make sure that we parsed the extended op correctly. If e.g. |
20154 | we expected a different address size than the producer used, | |
20155 | we may have read the wrong number of bytes. */ | |
20156 | if (line_ptr != extended_end) | |
20157 | { | |
b98664d3 | 20158 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
20159 | return; |
20160 | } | |
c906108c SS |
20161 | break; |
20162 | case DW_LNS_copy: | |
6f77053d | 20163 | state_machine.handle_copy (); |
c906108c SS |
20164 | break; |
20165 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
20166 | { |
20167 | CORE_ADDR adjust | |
20168 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 20169 | line_ptr += bytes_read; |
6f77053d PA |
20170 | |
20171 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 20172 | } |
c906108c SS |
20173 | break; |
20174 | case DW_LNS_advance_line: | |
a05a36a5 DE |
20175 | { |
20176 | int line_delta | |
20177 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 20178 | line_ptr += bytes_read; |
6f77053d PA |
20179 | |
20180 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 20181 | } |
c906108c SS |
20182 | break; |
20183 | case DW_LNS_set_file: | |
d9b3de22 | 20184 | { |
6f77053d | 20185 | file_name_index file |
ecfb656c PA |
20186 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
20187 | &bytes_read); | |
d9b3de22 | 20188 | line_ptr += bytes_read; |
8c43009f | 20189 | |
6f77053d | 20190 | state_machine.handle_set_file (file); |
d9b3de22 | 20191 | } |
c906108c SS |
20192 | break; |
20193 | case DW_LNS_set_column: | |
0ad93d4f | 20194 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
20195 | line_ptr += bytes_read; |
20196 | break; | |
20197 | case DW_LNS_negate_stmt: | |
6f77053d | 20198 | state_machine.handle_negate_stmt (); |
c906108c SS |
20199 | break; |
20200 | case DW_LNS_set_basic_block: | |
c906108c | 20201 | break; |
c2c6d25f JM |
20202 | /* Add to the address register of the state machine the |
20203 | address increment value corresponding to special opcode | |
a738430d MK |
20204 | 255. I.e., this value is scaled by the minimum |
20205 | instruction length since special opcode 255 would have | |
b021a221 | 20206 | scaled the increment. */ |
c906108c | 20207 | case DW_LNS_const_add_pc: |
6f77053d | 20208 | state_machine.handle_const_add_pc (); |
c906108c SS |
20209 | break; |
20210 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 20211 | { |
6f77053d | 20212 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 20213 | line_ptr += 2; |
6f77053d PA |
20214 | |
20215 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 20216 | } |
c906108c | 20217 | break; |
9aa1fe7e | 20218 | default: |
a738430d MK |
20219 | { |
20220 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 20221 | int i; |
a738430d | 20222 | |
debd256d | 20223 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
20224 | { |
20225 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20226 | line_ptr += bytes_read; | |
20227 | } | |
20228 | } | |
c906108c SS |
20229 | } |
20230 | } | |
d9b3de22 DE |
20231 | |
20232 | if (!end_sequence) | |
20233 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
20234 | ||
20235 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
20236 | in which case we still finish recording the last line). */ | |
6f77053d | 20237 | state_machine.record_line (true); |
c906108c | 20238 | } |
f3f5162e DE |
20239 | } |
20240 | ||
20241 | /* Decode the Line Number Program (LNP) for the given line_header | |
20242 | structure and CU. The actual information extracted and the type | |
20243 | of structures created from the LNP depends on the value of PST. | |
20244 | ||
20245 | 1. If PST is NULL, then this procedure uses the data from the program | |
20246 | to create all necessary symbol tables, and their linetables. | |
20247 | ||
20248 | 2. If PST is not NULL, this procedure reads the program to determine | |
20249 | the list of files included by the unit represented by PST, and | |
20250 | builds all the associated partial symbol tables. | |
20251 | ||
20252 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
20253 | It is used for relative paths in the line table. | |
20254 | NOTE: When processing partial symtabs (pst != NULL), | |
20255 | comp_dir == pst->dirname. | |
20256 | ||
20257 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
20258 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
20259 | symtab we don't use it in the name of the psymtabs we create. | |
20260 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
20261 | A good testcase for this is mb-inline.exp. |
20262 | ||
527f3840 JK |
20263 | LOWPC is the lowest address in CU (or 0 if not known). |
20264 | ||
20265 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
20266 | for its PC<->lines mapping information. Otherwise only the filename | |
20267 | table is read in. */ | |
f3f5162e DE |
20268 | |
20269 | static void | |
20270 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 20271 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 20272 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 20273 | { |
518817b3 | 20274 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 20275 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 20276 | |
527f3840 JK |
20277 | if (decode_mapping) |
20278 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
20279 | |
20280 | if (decode_for_pst_p) | |
20281 | { | |
aaa75496 JB |
20282 | /* Now that we're done scanning the Line Header Program, we can |
20283 | create the psymtab of each included file. */ | |
7ba99d21 AT |
20284 | for (auto &file_entry : lh->file_names ()) |
20285 | if (file_entry.included_p == 1) | |
aaa75496 | 20286 | { |
c89b44cd | 20287 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 20288 | const char *include_name = |
7ba99d21 AT |
20289 | psymtab_include_file_name (lh, file_entry, pst, |
20290 | comp_dir, &name_holder); | |
c6da4cef | 20291 | if (include_name != NULL) |
aaa75496 JB |
20292 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
20293 | } | |
20294 | } | |
cb1df416 DJ |
20295 | else |
20296 | { | |
20297 | /* Make sure a symtab is created for every file, even files | |
20298 | which contain only variables (i.e. no code with associated | |
20299 | line numbers). */ | |
c24bdb02 KS |
20300 | buildsym_compunit *builder = cu->get_builder (); |
20301 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 20302 | |
7ba99d21 | 20303 | for (auto &fe : lh->file_names ()) |
cb1df416 | 20304 | { |
804d2729 | 20305 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 20306 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 20307 | { |
c24bdb02 | 20308 | builder->get_current_subfile ()->symtab |
804d2729 | 20309 | = allocate_symtab (cust, |
c24bdb02 | 20310 | builder->get_current_subfile ()->name); |
43f3e411 | 20311 | } |
c24bdb02 | 20312 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
20313 | } |
20314 | } | |
c906108c SS |
20315 | } |
20316 | ||
20317 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
20318 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 20319 | or NULL if not known. |
c906108c SS |
20320 | This routine tries to keep line numbers from identical absolute and |
20321 | relative file names in a common subfile. | |
20322 | ||
20323 | Using the `list' example from the GDB testsuite, which resides in | |
20324 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
20325 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
20326 | ||
c5aa993b | 20327 | DW_AT_name: /srcdir/list0.c |
4d663531 | 20328 | DW_AT_comp_dir: /compdir |
357e46e7 | 20329 | files.files[0].name: list0.h |
c5aa993b | 20330 | files.files[0].dir: /srcdir |
357e46e7 | 20331 | files.files[1].name: list0.c |
c5aa993b | 20332 | files.files[1].dir: /srcdir |
c906108c SS |
20333 | |
20334 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
20335 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
20336 | start_subfile will ensure that this happens provided that we pass the | |
20337 | concatenation of files.files[1].dir and files.files[1].name as the | |
20338 | subfile's name. */ | |
c906108c SS |
20339 | |
20340 | static void | |
804d2729 TT |
20341 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
20342 | const char *dirname) | |
c906108c | 20343 | { |
43816ebc | 20344 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 20345 | |
4d663531 | 20346 | /* In order not to lose the line information directory, |
4f1520fb FR |
20347 | we concatenate it to the filename when it makes sense. |
20348 | Note that the Dwarf3 standard says (speaking of filenames in line | |
20349 | information): ``The directory index is ignored for file names | |
20350 | that represent full path names''. Thus ignoring dirname in the | |
20351 | `else' branch below isn't an issue. */ | |
c906108c | 20352 | |
d5166ae1 | 20353 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 20354 | { |
43816ebc TT |
20355 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
20356 | filename = copy.get (); | |
d521ce57 | 20357 | } |
c906108c | 20358 | |
c24bdb02 | 20359 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
20360 | } |
20361 | ||
804d2729 TT |
20362 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
20363 | buildsym_compunit constructor. */ | |
f4dc4d17 | 20364 | |
c24bdb02 KS |
20365 | struct compunit_symtab * |
20366 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
20367 | CORE_ADDR low_pc) | |
f4dc4d17 | 20368 | { |
c24bdb02 | 20369 | gdb_assert (m_builder == nullptr); |
43f3e411 | 20370 | |
c24bdb02 KS |
20371 | m_builder.reset (new struct buildsym_compunit |
20372 | (per_cu->dwarf2_per_objfile->objfile, | |
20373 | name, comp_dir, language, low_pc)); | |
93b8bea4 | 20374 | |
c24bdb02 | 20375 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 20376 | |
c24bdb02 KS |
20377 | get_builder ()->record_debugformat ("DWARF 2"); |
20378 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 20379 | |
c24bdb02 | 20380 | processing_has_namespace_info = false; |
43f3e411 | 20381 | |
c24bdb02 | 20382 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
20383 | } |
20384 | ||
4c2df51b DJ |
20385 | static void |
20386 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 20387 | struct dwarf2_cu *cu) |
4c2df51b | 20388 | { |
518817b3 | 20389 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e7c27a73 DJ |
20390 | struct comp_unit_head *cu_header = &cu->header; |
20391 | ||
4c2df51b DJ |
20392 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
20393 | code here to turn a symbol with DW_AT_external and a | |
20394 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
20395 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
20396 | with some versions of binutils) where shared libraries could have | |
20397 | relocations against symbols in their debug information - the | |
20398 | minimal symbol would have the right address, but the debug info | |
20399 | would not. It's no longer necessary, because we will explicitly | |
20400 | apply relocations when we read in the debug information now. */ | |
20401 | ||
20402 | /* A DW_AT_location attribute with no contents indicates that a | |
20403 | variable has been optimized away. */ | |
4fc6c0d5 | 20404 | if (attr->form_is_block () && DW_BLOCK (attr)->size == 0) |
4c2df51b | 20405 | { |
f1e6e072 | 20406 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
20407 | return; |
20408 | } | |
20409 | ||
20410 | /* Handle one degenerate form of location expression specially, to | |
20411 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
20412 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
20413 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 20414 | |
4fc6c0d5 | 20415 | if (attr->form_is_block () |
3019eac3 DE |
20416 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
20417 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
336d760d AT |
20418 | || ((DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index |
20419 | || DW_BLOCK (attr)->data[0] == DW_OP_addrx) | |
3019eac3 DE |
20420 | && (DW_BLOCK (attr)->size |
20421 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 20422 | { |
891d2f0b | 20423 | unsigned int dummy; |
4c2df51b | 20424 | |
3019eac3 | 20425 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
c8a7a66f TT |
20426 | SET_SYMBOL_VALUE_ADDRESS |
20427 | (sym, cu->header.read_address (objfile->obfd, | |
20428 | DW_BLOCK (attr)->data + 1, | |
20429 | &dummy)); | |
3019eac3 | 20430 | else |
38583298 TT |
20431 | SET_SYMBOL_VALUE_ADDRESS |
20432 | (sym, read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, | |
20433 | &dummy)); | |
f1e6e072 | 20434 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b | 20435 | fixup_symbol_section (sym, objfile); |
6a053cb1 TT |
20436 | SET_SYMBOL_VALUE_ADDRESS |
20437 | (sym, | |
20438 | SYMBOL_VALUE_ADDRESS (sym) | |
20439 | + objfile->section_offsets[SYMBOL_SECTION (sym)]); | |
4c2df51b DJ |
20440 | return; |
20441 | } | |
20442 | ||
20443 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
20444 | expression evaluator, and use LOC_COMPUTED only when necessary | |
20445 | (i.e. when the value of a register or memory location is | |
20446 | referenced, or a thread-local block, etc.). Then again, it might | |
20447 | not be worthwhile. I'm assuming that it isn't unless performance | |
20448 | or memory numbers show me otherwise. */ | |
20449 | ||
f1e6e072 | 20450 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 20451 | |
f1e6e072 | 20452 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 20453 | cu->has_loclist = true; |
4c2df51b DJ |
20454 | } |
20455 | ||
c906108c SS |
20456 | /* Given a pointer to a DWARF information entry, figure out if we need |
20457 | to make a symbol table entry for it, and if so, create a new entry | |
20458 | and return a pointer to it. | |
20459 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
20460 | used the passed type. |
20461 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
20462 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
20463 | |
20464 | static struct symbol * | |
5e2db402 TT |
20465 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
20466 | struct symbol *space) | |
c906108c | 20467 | { |
518817b3 SM |
20468 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20469 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 20470 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 20471 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 20472 | struct symbol *sym = NULL; |
15d034d0 | 20473 | const char *name; |
c906108c SS |
20474 | struct attribute *attr = NULL; |
20475 | struct attribute *attr2 = NULL; | |
e142c38c | 20476 | CORE_ADDR baseaddr; |
e37fd15a SW |
20477 | struct pending **list_to_add = NULL; |
20478 | ||
edb3359d | 20479 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 20480 | |
b3b3bada | 20481 | baseaddr = objfile->text_section_offset (); |
c906108c | 20482 | |
94af9270 | 20483 | name = dwarf2_name (die, cu); |
c906108c SS |
20484 | if (name) |
20485 | { | |
94af9270 | 20486 | const char *linkagename; |
34eaf542 | 20487 | int suppress_add = 0; |
94af9270 | 20488 | |
34eaf542 TT |
20489 | if (space) |
20490 | sym = space; | |
20491 | else | |
e623cf5d | 20492 | sym = allocate_symbol (objfile); |
c906108c | 20493 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
20494 | |
20495 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 20496 | sym->set_language (cu->language, &objfile->objfile_obstack); |
94af9270 | 20497 | linkagename = dwarf2_physname (name, die, cu); |
4d4eaa30 | 20498 | sym->compute_and_set_names (linkagename, false, objfile->per_bfd); |
c906108c | 20499 | |
f55ee35c JK |
20500 | /* Fortran does not have mangling standard and the mangling does differ |
20501 | between gfortran, iFort etc. */ | |
20502 | if (cu->language == language_fortran | |
468c0cbb CB |
20503 | && symbol_get_demangled_name (sym) == NULL) |
20504 | symbol_set_demangled_name (sym, | |
cfc594ee | 20505 | dwarf2_full_name (name, die, cu), |
29df156d | 20506 | NULL); |
f55ee35c | 20507 | |
c906108c | 20508 | /* Default assumptions. |
c5aa993b | 20509 | Use the passed type or decode it from the die. */ |
176620f1 | 20510 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 20511 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
20512 | if (type != NULL) |
20513 | SYMBOL_TYPE (sym) = type; | |
20514 | else | |
e7c27a73 | 20515 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
20516 | attr = dwarf2_attr (die, |
20517 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
20518 | cu); | |
435d3d88 | 20519 | if (attr != nullptr) |
c906108c SS |
20520 | { |
20521 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
20522 | } | |
cb1df416 | 20523 | |
edb3359d DJ |
20524 | attr = dwarf2_attr (die, |
20525 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
20526 | cu); | |
435d3d88 | 20527 | if (attr != nullptr) |
cb1df416 | 20528 | { |
ecfb656c | 20529 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 20530 | struct file_entry *fe; |
9a619af0 | 20531 | |
ecfb656c PA |
20532 | if (cu->line_header != NULL) |
20533 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
20534 | else |
20535 | fe = NULL; | |
20536 | ||
20537 | if (fe == NULL) | |
b98664d3 | 20538 | complaint (_("file index out of range")); |
8c43009f PA |
20539 | else |
20540 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
20541 | } |
20542 | ||
c906108c SS |
20543 | switch (die->tag) |
20544 | { | |
20545 | case DW_TAG_label: | |
e142c38c | 20546 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 20547 | if (attr != nullptr) |
3e29f34a MR |
20548 | { |
20549 | CORE_ADDR addr; | |
20550 | ||
cd6c91b4 | 20551 | addr = attr->value_as_address (); |
3e29f34a | 20552 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 20553 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
3e29f34a | 20554 | } |
0f5238ed TT |
20555 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
20556 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 20557 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
d3cb6808 | 20558 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
20559 | break; |
20560 | case DW_TAG_subprogram: | |
20561 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
20562 | finish_block. */ | |
f1e6e072 | 20563 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 20564 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d | 20565 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
0a4b0913 AB |
20566 | || cu->language == language_ada |
20567 | || cu->language == language_fortran) | |
c906108c | 20568 | { |
2cfa0c8d | 20569 | /* Subprograms marked external are stored as a global symbol. |
0a4b0913 AB |
20570 | Ada and Fortran subprograms, whether marked external or |
20571 | not, are always stored as a global symbol, because we want | |
20572 | to be able to access them globally. For instance, we want | |
20573 | to be able to break on a nested subprogram without having | |
20574 | to specify the context. */ | |
c24bdb02 | 20575 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
20576 | } |
20577 | else | |
20578 | { | |
e37fd15a | 20579 | list_to_add = cu->list_in_scope; |
c906108c SS |
20580 | } |
20581 | break; | |
edb3359d DJ |
20582 | case DW_TAG_inlined_subroutine: |
20583 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
20584 | finish_block. */ | |
f1e6e072 | 20585 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 20586 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 20587 | list_to_add = cu->list_in_scope; |
edb3359d | 20588 | break; |
34eaf542 TT |
20589 | case DW_TAG_template_value_param: |
20590 | suppress_add = 1; | |
20591 | /* Fall through. */ | |
72929c62 | 20592 | case DW_TAG_constant: |
c906108c | 20593 | case DW_TAG_variable: |
254e6b9e | 20594 | case DW_TAG_member: |
0963b4bd MS |
20595 | /* Compilation with minimal debug info may result in |
20596 | variables with missing type entries. Change the | |
20597 | misleading `void' type to something sensible. */ | |
c906108c | 20598 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
46a4882b | 20599 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 20600 | |
e142c38c | 20601 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
20602 | /* In the case of DW_TAG_member, we should only be called for |
20603 | static const members. */ | |
20604 | if (die->tag == DW_TAG_member) | |
20605 | { | |
3863f96c DE |
20606 | /* dwarf2_add_field uses die_is_declaration, |
20607 | so we do the same. */ | |
254e6b9e DE |
20608 | gdb_assert (die_is_declaration (die, cu)); |
20609 | gdb_assert (attr); | |
20610 | } | |
435d3d88 | 20611 | if (attr != nullptr) |
c906108c | 20612 | { |
e7c27a73 | 20613 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 20614 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 20615 | if (!suppress_add) |
34eaf542 TT |
20616 | { |
20617 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
c24bdb02 | 20618 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 20619 | else |
e37fd15a | 20620 | list_to_add = cu->list_in_scope; |
34eaf542 | 20621 | } |
c906108c SS |
20622 | break; |
20623 | } | |
e142c38c | 20624 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 20625 | if (attr != nullptr) |
c906108c | 20626 | { |
e7c27a73 | 20627 | var_decode_location (attr, sym, cu); |
e142c38c | 20628 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
20629 | |
20630 | /* Fortran explicitly imports any global symbols to the local | |
20631 | scope by DW_TAG_common_block. */ | |
20632 | if (cu->language == language_fortran && die->parent | |
20633 | && die->parent->tag == DW_TAG_common_block) | |
20634 | attr2 = NULL; | |
20635 | ||
caac4577 JG |
20636 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
20637 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
20638 | && !dwarf2_per_objfile->has_section_at_zero) | |
20639 | { | |
20640 | /* When a static variable is eliminated by the linker, | |
20641 | the corresponding debug information is not stripped | |
20642 | out, but the variable address is set to null; | |
20643 | do not add such variables into symbol table. */ | |
20644 | } | |
20645 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 20646 | { |
4b610737 TT |
20647 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
20648 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
20649 | && dwarf2_per_objfile->can_copy) | |
20650 | { | |
20651 | /* A global static variable might be subject to | |
20652 | copy relocation. We first check for a local | |
20653 | minsym, though, because maybe the symbol was | |
20654 | marked hidden, in which case this would not | |
20655 | apply. */ | |
20656 | bound_minimal_symbol found | |
20657 | = (lookup_minimal_symbol_linkage | |
987012b8 | 20658 | (sym->linkage_name (), objfile)); |
4b610737 TT |
20659 | if (found.minsym != nullptr) |
20660 | sym->maybe_copied = 1; | |
20661 | } | |
f55ee35c | 20662 | |
1c809c68 TT |
20663 | /* A variable with DW_AT_external is never static, |
20664 | but it may be block-scoped. */ | |
804d2729 | 20665 | list_to_add |
c24bdb02 KS |
20666 | = ((cu->list_in_scope |
20667 | == cu->get_builder ()->get_file_symbols ()) | |
20668 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 20669 | : cu->list_in_scope); |
1c809c68 | 20670 | } |
c906108c | 20671 | else |
e37fd15a | 20672 | list_to_add = cu->list_in_scope; |
c906108c SS |
20673 | } |
20674 | else | |
20675 | { | |
20676 | /* We do not know the address of this symbol. | |
c5aa993b JM |
20677 | If it is an external symbol and we have type information |
20678 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
20679 | The address of the variable will then be determined from | |
20680 | the minimal symbol table whenever the variable is | |
20681 | referenced. */ | |
e142c38c | 20682 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
20683 | |
20684 | /* Fortran explicitly imports any global symbols to the local | |
20685 | scope by DW_TAG_common_block. */ | |
20686 | if (cu->language == language_fortran && die->parent | |
20687 | && die->parent->tag == DW_TAG_common_block) | |
20688 | { | |
20689 | /* SYMBOL_CLASS doesn't matter here because | |
20690 | read_common_block is going to reset it. */ | |
20691 | if (!suppress_add) | |
20692 | list_to_add = cu->list_in_scope; | |
20693 | } | |
20694 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
20695 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 20696 | { |
0fe7935b DJ |
20697 | /* A variable with DW_AT_external is never static, but it |
20698 | may be block-scoped. */ | |
804d2729 | 20699 | list_to_add |
c24bdb02 KS |
20700 | = ((cu->list_in_scope |
20701 | == cu->get_builder ()->get_file_symbols ()) | |
20702 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 20703 | : cu->list_in_scope); |
0fe7935b | 20704 | |
f1e6e072 | 20705 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 20706 | } |
442ddf59 JK |
20707 | else if (!die_is_declaration (die, cu)) |
20708 | { | |
20709 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
20710 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
20711 | if (!suppress_add) |
20712 | list_to_add = cu->list_in_scope; | |
442ddf59 | 20713 | } |
c906108c SS |
20714 | } |
20715 | break; | |
20716 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
20717 | { |
20718 | /* If we are inside a function, mark this as an argument. If | |
20719 | not, we might be looking at an argument to an inlined function | |
20720 | when we do not have enough information to show inlined frames; | |
20721 | pretend it's a local variable in that case so that the user can | |
20722 | still see it. */ | |
804d2729 | 20723 | struct context_stack *curr |
c24bdb02 | 20724 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
20725 | if (curr != nullptr && curr->name != nullptr) |
20726 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
20727 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 20728 | if (attr != nullptr) |
a60f3166 TT |
20729 | { |
20730 | var_decode_location (attr, sym, cu); | |
20731 | } | |
20732 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 20733 | if (attr != nullptr) |
a60f3166 TT |
20734 | { |
20735 | dwarf2_const_value (attr, sym, cu); | |
20736 | } | |
f346a30d | 20737 | |
a60f3166 TT |
20738 | list_to_add = cu->list_in_scope; |
20739 | } | |
c906108c SS |
20740 | break; |
20741 | case DW_TAG_unspecified_parameters: | |
20742 | /* From varargs functions; gdb doesn't seem to have any | |
20743 | interest in this information, so just ignore it for now. | |
20744 | (FIXME?) */ | |
20745 | break; | |
34eaf542 TT |
20746 | case DW_TAG_template_type_param: |
20747 | suppress_add = 1; | |
20748 | /* Fall through. */ | |
c906108c | 20749 | case DW_TAG_class_type: |
680b30c7 | 20750 | case DW_TAG_interface_type: |
c906108c SS |
20751 | case DW_TAG_structure_type: |
20752 | case DW_TAG_union_type: | |
72019c9c | 20753 | case DW_TAG_set_type: |
c906108c | 20754 | case DW_TAG_enumeration_type: |
f1e6e072 | 20755 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 20756 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 20757 | |
63d06c5c | 20758 | { |
9c37b5ae | 20759 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
20760 | really ever be static objects: otherwise, if you try |
20761 | to, say, break of a class's method and you're in a file | |
20762 | which doesn't mention that class, it won't work unless | |
20763 | the check for all static symbols in lookup_symbol_aux | |
20764 | saves you. See the OtherFileClass tests in | |
20765 | gdb.c++/namespace.exp. */ | |
20766 | ||
e37fd15a | 20767 | if (!suppress_add) |
34eaf542 | 20768 | { |
c24bdb02 | 20769 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 20770 | list_to_add |
c24bdb02 | 20771 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 20772 | && cu->language == language_cplus |
c24bdb02 | 20773 | ? builder->get_global_symbols () |
804d2729 | 20774 | : cu->list_in_scope); |
63d06c5c | 20775 | |
64382290 | 20776 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 20777 | ... }" also defines a typedef for "foo". */ |
64382290 | 20778 | if (cu->language == language_cplus |
45280282 | 20779 | || cu->language == language_ada |
c44af4eb TT |
20780 | || cu->language == language_d |
20781 | || cu->language == language_rust) | |
64382290 TT |
20782 | { |
20783 | /* The symbol's name is already allocated along | |
20784 | with this objfile, so we don't need to | |
20785 | duplicate it for the type. */ | |
20786 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
987012b8 | 20787 | TYPE_NAME (SYMBOL_TYPE (sym)) = sym->search_name (); |
64382290 | 20788 | } |
63d06c5c DC |
20789 | } |
20790 | } | |
c906108c SS |
20791 | break; |
20792 | case DW_TAG_typedef: | |
f1e6e072 | 20793 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 20794 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 20795 | list_to_add = cu->list_in_scope; |
63d06c5c | 20796 | break; |
c906108c | 20797 | case DW_TAG_base_type: |
a02abb62 | 20798 | case DW_TAG_subrange_type: |
f1e6e072 | 20799 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 20800 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 20801 | list_to_add = cu->list_in_scope; |
c906108c SS |
20802 | break; |
20803 | case DW_TAG_enumerator: | |
e142c38c | 20804 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 20805 | if (attr != nullptr) |
c906108c | 20806 | { |
e7c27a73 | 20807 | dwarf2_const_value (attr, sym, cu); |
c906108c | 20808 | } |
63d06c5c DC |
20809 | { |
20810 | /* NOTE: carlton/2003-11-10: See comment above in the | |
20811 | DW_TAG_class_type, etc. block. */ | |
20812 | ||
804d2729 | 20813 | list_to_add |
c24bdb02 | 20814 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 20815 | && cu->language == language_cplus |
c24bdb02 | 20816 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 20817 | : cu->list_in_scope); |
63d06c5c | 20818 | } |
c906108c | 20819 | break; |
74921315 | 20820 | case DW_TAG_imported_declaration: |
5c4e30ca | 20821 | case DW_TAG_namespace: |
f1e6e072 | 20822 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 20823 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 20824 | break; |
530e8392 KB |
20825 | case DW_TAG_module: |
20826 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
20827 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 20828 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 20829 | break; |
4357ac6c | 20830 | case DW_TAG_common_block: |
f1e6e072 | 20831 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 20832 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 20833 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 20834 | break; |
c906108c SS |
20835 | default: |
20836 | /* Not a tag we recognize. Hopefully we aren't processing | |
20837 | trash data, but since we must specifically ignore things | |
20838 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 20839 | this point. */ |
b98664d3 | 20840 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 20841 | dwarf_tag_name (die->tag)); |
c906108c SS |
20842 | break; |
20843 | } | |
df8a16a1 | 20844 | |
e37fd15a SW |
20845 | if (suppress_add) |
20846 | { | |
20847 | sym->hash_next = objfile->template_symbols; | |
20848 | objfile->template_symbols = sym; | |
20849 | list_to_add = NULL; | |
20850 | } | |
20851 | ||
20852 | if (list_to_add != NULL) | |
d3cb6808 | 20853 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 20854 | |
df8a16a1 DJ |
20855 | /* For the benefit of old versions of GCC, check for anonymous |
20856 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 20857 | if (!cu->processing_has_namespace_info |
94af9270 | 20858 | && cu->language == language_cplus) |
c24bdb02 | 20859 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
20860 | } |
20861 | return (sym); | |
20862 | } | |
20863 | ||
98bfdba5 PA |
20864 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
20865 | zero-extend it as appropriate for the symbol's type. The DWARF | |
20866 | standard (v4) is not entirely clear about the meaning of using | |
20867 | DW_FORM_dataN for a constant with a signed type, where the type is | |
20868 | wider than the data. The conclusion of a discussion on the DWARF | |
20869 | list was that this is unspecified. We choose to always zero-extend | |
20870 | because that is the interpretation long in use by GCC. */ | |
c906108c | 20871 | |
98bfdba5 | 20872 | static gdb_byte * |
ff39bb5e | 20873 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 20874 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 20875 | { |
518817b3 | 20876 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e17a4113 UW |
20877 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
20878 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
20879 | LONGEST l = DW_UNSND (attr); |
20880 | ||
20881 | if (bits < sizeof (*value) * 8) | |
20882 | { | |
20883 | l &= ((LONGEST) 1 << bits) - 1; | |
20884 | *value = l; | |
20885 | } | |
20886 | else if (bits == sizeof (*value) * 8) | |
20887 | *value = l; | |
20888 | else | |
20889 | { | |
224c3ddb | 20890 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
20891 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
20892 | return bytes; | |
20893 | } | |
20894 | ||
20895 | return NULL; | |
20896 | } | |
20897 | ||
20898 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
20899 | the value does not fit in *VALUE, set *BYTES - either already | |
20900 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
20901 | or, set *BATON, if we translated the constant to a location | |
20902 | expression. */ | |
20903 | ||
20904 | static void | |
ff39bb5e | 20905 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
20906 | const char *name, struct obstack *obstack, |
20907 | struct dwarf2_cu *cu, | |
d521ce57 | 20908 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
20909 | struct dwarf2_locexpr_baton **baton) |
20910 | { | |
518817b3 | 20911 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
98bfdba5 | 20912 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 20913 | struct dwarf_block *blk; |
98bfdba5 PA |
20914 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
20915 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
20916 | ||
20917 | *value = 0; | |
20918 | *bytes = NULL; | |
20919 | *baton = NULL; | |
c906108c SS |
20920 | |
20921 | switch (attr->form) | |
20922 | { | |
20923 | case DW_FORM_addr: | |
336d760d | 20924 | case DW_FORM_addrx: |
3019eac3 | 20925 | case DW_FORM_GNU_addr_index: |
ac56253d | 20926 | { |
ac56253d TT |
20927 | gdb_byte *data; |
20928 | ||
98bfdba5 PA |
20929 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
20930 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 20931 | cu_header->addr_size, |
98bfdba5 | 20932 | TYPE_LENGTH (type)); |
ac56253d TT |
20933 | /* Symbols of this form are reasonably rare, so we just |
20934 | piggyback on the existing location code rather than writing | |
20935 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 20936 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
98bfdba5 PA |
20937 | (*baton)->per_cu = cu->per_cu; |
20938 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 20939 | |
98bfdba5 | 20940 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 20941 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 20942 | (*baton)->data = data; |
ac56253d TT |
20943 | |
20944 | data[0] = DW_OP_addr; | |
20945 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
20946 | byte_order, DW_ADDR (attr)); | |
20947 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 20948 | } |
c906108c | 20949 | break; |
4ac36638 | 20950 | case DW_FORM_string: |
93b5768b | 20951 | case DW_FORM_strp: |
cf532bd1 | 20952 | case DW_FORM_strx: |
3019eac3 | 20953 | case DW_FORM_GNU_str_index: |
36586728 | 20954 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
20955 | /* DW_STRING is already allocated on the objfile obstack, point |
20956 | directly to it. */ | |
d521ce57 | 20957 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 20958 | break; |
c906108c SS |
20959 | case DW_FORM_block1: |
20960 | case DW_FORM_block2: | |
20961 | case DW_FORM_block4: | |
20962 | case DW_FORM_block: | |
2dc7f7b3 | 20963 | case DW_FORM_exprloc: |
0224619f | 20964 | case DW_FORM_data16: |
c906108c | 20965 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
20966 | if (TYPE_LENGTH (type) != blk->size) |
20967 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
20968 | TYPE_LENGTH (type)); | |
20969 | *bytes = blk->data; | |
c906108c | 20970 | break; |
2df3850c JM |
20971 | |
20972 | /* The DW_AT_const_value attributes are supposed to carry the | |
20973 | symbol's value "represented as it would be on the target | |
20974 | architecture." By the time we get here, it's already been | |
20975 | converted to host endianness, so we just need to sign- or | |
20976 | zero-extend it as appropriate. */ | |
20977 | case DW_FORM_data1: | |
3aef2284 | 20978 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 20979 | break; |
c906108c | 20980 | case DW_FORM_data2: |
3aef2284 | 20981 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 20982 | break; |
c906108c | 20983 | case DW_FORM_data4: |
3aef2284 | 20984 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 20985 | break; |
c906108c | 20986 | case DW_FORM_data8: |
3aef2284 | 20987 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
20988 | break; |
20989 | ||
c906108c | 20990 | case DW_FORM_sdata: |
663c44ac | 20991 | case DW_FORM_implicit_const: |
98bfdba5 | 20992 | *value = DW_SND (attr); |
2df3850c JM |
20993 | break; |
20994 | ||
c906108c | 20995 | case DW_FORM_udata: |
98bfdba5 | 20996 | *value = DW_UNSND (attr); |
c906108c | 20997 | break; |
2df3850c | 20998 | |
c906108c | 20999 | default: |
b98664d3 | 21000 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 21001 | dwarf_form_name (attr->form)); |
98bfdba5 | 21002 | *value = 0; |
c906108c SS |
21003 | break; |
21004 | } | |
21005 | } | |
21006 | ||
2df3850c | 21007 | |
98bfdba5 PA |
21008 | /* Copy constant value from an attribute to a symbol. */ |
21009 | ||
2df3850c | 21010 | static void |
ff39bb5e | 21011 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 21012 | struct dwarf2_cu *cu) |
2df3850c | 21013 | { |
518817b3 | 21014 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
12df843f | 21015 | LONGEST value; |
d521ce57 | 21016 | const gdb_byte *bytes; |
98bfdba5 | 21017 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 21018 | |
98bfdba5 | 21019 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 21020 | sym->print_name (), |
98bfdba5 PA |
21021 | &objfile->objfile_obstack, cu, |
21022 | &value, &bytes, &baton); | |
2df3850c | 21023 | |
98bfdba5 PA |
21024 | if (baton != NULL) |
21025 | { | |
98bfdba5 | 21026 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 21027 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
21028 | } |
21029 | else if (bytes != NULL) | |
21030 | { | |
21031 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 21032 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
21033 | } |
21034 | else | |
21035 | { | |
21036 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 21037 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 21038 | } |
2df3850c JM |
21039 | } |
21040 | ||
c906108c SS |
21041 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
21042 | ||
21043 | static struct type * | |
e7c27a73 | 21044 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21045 | { |
c906108c | 21046 | struct attribute *type_attr; |
c906108c | 21047 | |
e142c38c | 21048 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
21049 | if (!type_attr) |
21050 | { | |
518817b3 | 21051 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 21052 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 21053 | return objfile_type (objfile)->builtin_void; |
c906108c | 21054 | } |
348e048f | 21055 | |
673bfd45 | 21056 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21057 | } |
21058 | ||
b4ba55a1 JB |
21059 | /* True iff CU's producer generates GNAT Ada auxiliary information |
21060 | that allows to find parallel types through that information instead | |
21061 | of having to do expensive parallel lookups by type name. */ | |
21062 | ||
21063 | static int | |
21064 | need_gnat_info (struct dwarf2_cu *cu) | |
21065 | { | |
de4cb04a JB |
21066 | /* Assume that the Ada compiler was GNAT, which always produces |
21067 | the auxiliary information. */ | |
21068 | return (cu->language == language_ada); | |
b4ba55a1 JB |
21069 | } |
21070 | ||
b4ba55a1 JB |
21071 | /* Return the auxiliary type of the die in question using its |
21072 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
21073 | attribute is not present. */ | |
21074 | ||
21075 | static struct type * | |
21076 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
21077 | { | |
b4ba55a1 | 21078 | struct attribute *type_attr; |
b4ba55a1 JB |
21079 | |
21080 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
21081 | if (!type_attr) | |
21082 | return NULL; | |
21083 | ||
673bfd45 | 21084 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
21085 | } |
21086 | ||
21087 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
21088 | descriptive type accordingly. */ | |
21089 | ||
21090 | static void | |
21091 | set_descriptive_type (struct type *type, struct die_info *die, | |
21092 | struct dwarf2_cu *cu) | |
21093 | { | |
21094 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
21095 | ||
21096 | if (descriptive_type) | |
21097 | { | |
21098 | ALLOCATE_GNAT_AUX_TYPE (type); | |
21099 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
21100 | } | |
21101 | } | |
21102 | ||
c906108c SS |
21103 | /* Return the containing type of the die in question using its |
21104 | DW_AT_containing_type attribute. */ | |
21105 | ||
21106 | static struct type * | |
e7c27a73 | 21107 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21108 | { |
c906108c | 21109 | struct attribute *type_attr; |
518817b3 | 21110 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 21111 | |
e142c38c | 21112 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
21113 | if (!type_attr) |
21114 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 21115 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 21116 | |
673bfd45 | 21117 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21118 | } |
21119 | ||
ac9ec31b DE |
21120 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
21121 | ||
21122 | static struct type * | |
21123 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
21124 | { | |
518817b3 SM |
21125 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21126 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b | 21127 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
528e1572 | 21128 | char *saved; |
ac9ec31b | 21129 | |
528e1572 SM |
21130 | std::string message |
21131 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
21132 | objfile_name (objfile), | |
21133 | sect_offset_str (cu->header.sect_off), | |
21134 | sect_offset_str (die->sect_off)); | |
efba19b0 | 21135 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 21136 | |
19f392bc | 21137 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
21138 | } |
21139 | ||
673bfd45 | 21140 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
21141 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
21142 | DW_AT_containing_type. | |
673bfd45 DE |
21143 | If there is no type substitute an error marker. */ |
21144 | ||
c906108c | 21145 | static struct type * |
ff39bb5e | 21146 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 21147 | struct dwarf2_cu *cu) |
c906108c | 21148 | { |
518817b3 SM |
21149 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21150 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 21151 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
f792889a DJ |
21152 | struct type *this_type; |
21153 | ||
ac9ec31b DE |
21154 | gdb_assert (attr->name == DW_AT_type |
21155 | || attr->name == DW_AT_GNAT_descriptive_type | |
21156 | || attr->name == DW_AT_containing_type); | |
21157 | ||
673bfd45 DE |
21158 | /* First see if we have it cached. */ |
21159 | ||
36586728 TT |
21160 | if (attr->form == DW_FORM_GNU_ref_alt) |
21161 | { | |
21162 | struct dwarf2_per_cu_data *per_cu; | |
9c541725 | 21163 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
36586728 | 21164 | |
ed2dc618 SM |
21165 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, |
21166 | dwarf2_per_objfile); | |
9c541725 | 21167 | this_type = get_die_type_at_offset (sect_off, per_cu); |
36586728 | 21168 | } |
cd6c91b4 | 21169 | else if (attr->form_is_ref ()) |
673bfd45 | 21170 | { |
9c541725 | 21171 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
673bfd45 | 21172 | |
9c541725 | 21173 | this_type = get_die_type_at_offset (sect_off, cu->per_cu); |
673bfd45 | 21174 | } |
55f1336d | 21175 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 21176 | { |
ac9ec31b | 21177 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 21178 | |
ac9ec31b | 21179 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
21180 | } |
21181 | else | |
21182 | { | |
b98664d3 | 21183 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
21184 | " at %s [in module %s]"), |
21185 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 21186 | objfile_name (objfile)); |
ac9ec31b | 21187 | return build_error_marker_type (cu, die); |
673bfd45 DE |
21188 | } |
21189 | ||
21190 | /* If not cached we need to read it in. */ | |
21191 | ||
21192 | if (this_type == NULL) | |
21193 | { | |
ac9ec31b | 21194 | struct die_info *type_die = NULL; |
673bfd45 DE |
21195 | struct dwarf2_cu *type_cu = cu; |
21196 | ||
cd6c91b4 | 21197 | if (attr->form_is_ref ()) |
ac9ec31b DE |
21198 | type_die = follow_die_ref (die, attr, &type_cu); |
21199 | if (type_die == NULL) | |
21200 | return build_error_marker_type (cu, die); | |
21201 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
21202 | from an inter-CU reference and the type's CU got expanded before |
21203 | ours. */ | |
ac9ec31b | 21204 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
21205 | } |
21206 | ||
21207 | /* If we still don't have a type use an error marker. */ | |
21208 | ||
21209 | if (this_type == NULL) | |
ac9ec31b | 21210 | return build_error_marker_type (cu, die); |
673bfd45 | 21211 | |
f792889a | 21212 | return this_type; |
c906108c SS |
21213 | } |
21214 | ||
673bfd45 DE |
21215 | /* Return the type in DIE, CU. |
21216 | Returns NULL for invalid types. | |
21217 | ||
02142a6c | 21218 | This first does a lookup in die_type_hash, |
673bfd45 DE |
21219 | and only reads the die in if necessary. |
21220 | ||
21221 | NOTE: This can be called when reading in partial or full symbols. */ | |
21222 | ||
f792889a | 21223 | static struct type * |
e7c27a73 | 21224 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21225 | { |
f792889a DJ |
21226 | struct type *this_type; |
21227 | ||
21228 | this_type = get_die_type (die, cu); | |
21229 | if (this_type) | |
21230 | return this_type; | |
21231 | ||
673bfd45 DE |
21232 | return read_type_die_1 (die, cu); |
21233 | } | |
21234 | ||
21235 | /* Read the type in DIE, CU. | |
21236 | Returns NULL for invalid types. */ | |
21237 | ||
21238 | static struct type * | |
21239 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
21240 | { | |
21241 | struct type *this_type = NULL; | |
21242 | ||
c906108c SS |
21243 | switch (die->tag) |
21244 | { | |
21245 | case DW_TAG_class_type: | |
680b30c7 | 21246 | case DW_TAG_interface_type: |
c906108c SS |
21247 | case DW_TAG_structure_type: |
21248 | case DW_TAG_union_type: | |
f792889a | 21249 | this_type = read_structure_type (die, cu); |
c906108c SS |
21250 | break; |
21251 | case DW_TAG_enumeration_type: | |
f792889a | 21252 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
21253 | break; |
21254 | case DW_TAG_subprogram: | |
21255 | case DW_TAG_subroutine_type: | |
edb3359d | 21256 | case DW_TAG_inlined_subroutine: |
f792889a | 21257 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
21258 | break; |
21259 | case DW_TAG_array_type: | |
f792889a | 21260 | this_type = read_array_type (die, cu); |
c906108c | 21261 | break; |
72019c9c | 21262 | case DW_TAG_set_type: |
f792889a | 21263 | this_type = read_set_type (die, cu); |
72019c9c | 21264 | break; |
c906108c | 21265 | case DW_TAG_pointer_type: |
f792889a | 21266 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
21267 | break; |
21268 | case DW_TAG_ptr_to_member_type: | |
f792889a | 21269 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
21270 | break; |
21271 | case DW_TAG_reference_type: | |
4297a3f0 AV |
21272 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
21273 | break; | |
21274 | case DW_TAG_rvalue_reference_type: | |
21275 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
21276 | break; |
21277 | case DW_TAG_const_type: | |
f792889a | 21278 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
21279 | break; |
21280 | case DW_TAG_volatile_type: | |
f792889a | 21281 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 21282 | break; |
06d66ee9 TT |
21283 | case DW_TAG_restrict_type: |
21284 | this_type = read_tag_restrict_type (die, cu); | |
21285 | break; | |
c906108c | 21286 | case DW_TAG_string_type: |
f792889a | 21287 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
21288 | break; |
21289 | case DW_TAG_typedef: | |
f792889a | 21290 | this_type = read_typedef (die, cu); |
c906108c | 21291 | break; |
a02abb62 | 21292 | case DW_TAG_subrange_type: |
f792889a | 21293 | this_type = read_subrange_type (die, cu); |
a02abb62 | 21294 | break; |
c906108c | 21295 | case DW_TAG_base_type: |
f792889a | 21296 | this_type = read_base_type (die, cu); |
c906108c | 21297 | break; |
81a17f79 | 21298 | case DW_TAG_unspecified_type: |
f792889a | 21299 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 21300 | break; |
0114d602 DJ |
21301 | case DW_TAG_namespace: |
21302 | this_type = read_namespace_type (die, cu); | |
21303 | break; | |
f55ee35c JK |
21304 | case DW_TAG_module: |
21305 | this_type = read_module_type (die, cu); | |
21306 | break; | |
a2c2acaf MW |
21307 | case DW_TAG_atomic_type: |
21308 | this_type = read_tag_atomic_type (die, cu); | |
21309 | break; | |
c906108c | 21310 | default: |
b98664d3 | 21311 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 21312 | dwarf_tag_name (die->tag)); |
c906108c SS |
21313 | break; |
21314 | } | |
63d06c5c | 21315 | |
f792889a | 21316 | return this_type; |
63d06c5c DC |
21317 | } |
21318 | ||
abc72ce4 DE |
21319 | /* See if we can figure out if the class lives in a namespace. We do |
21320 | this by looking for a member function; its demangled name will | |
21321 | contain namespace info, if there is any. | |
21322 | Return the computed name or NULL. | |
21323 | Space for the result is allocated on the objfile's obstack. | |
21324 | This is the full-die version of guess_partial_die_structure_name. | |
21325 | In this case we know DIE has no useful parent. */ | |
21326 | ||
43816ebc | 21327 | static const char * |
abc72ce4 DE |
21328 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
21329 | { | |
21330 | struct die_info *spec_die; | |
21331 | struct dwarf2_cu *spec_cu; | |
21332 | struct die_info *child; | |
518817b3 | 21333 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 DE |
21334 | |
21335 | spec_cu = cu; | |
21336 | spec_die = die_specification (die, &spec_cu); | |
21337 | if (spec_die != NULL) | |
21338 | { | |
21339 | die = spec_die; | |
21340 | cu = spec_cu; | |
21341 | } | |
21342 | ||
21343 | for (child = die->child; | |
21344 | child != NULL; | |
21345 | child = child->sibling) | |
21346 | { | |
21347 | if (child->tag == DW_TAG_subprogram) | |
21348 | { | |
73b9be8b | 21349 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 21350 | |
7d45c7c3 | 21351 | if (linkage_name != NULL) |
abc72ce4 | 21352 | { |
43816ebc TT |
21353 | gdb::unique_xmalloc_ptr<char> actual_name |
21354 | (language_class_name_from_physname (cu->language_defn, | |
21355 | linkage_name)); | |
21356 | const char *name = NULL; | |
abc72ce4 DE |
21357 | |
21358 | if (actual_name != NULL) | |
21359 | { | |
15d034d0 | 21360 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
21361 | |
21362 | if (die_name != NULL | |
43816ebc | 21363 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
21364 | { |
21365 | /* Strip off the class name from the full name. | |
21366 | We want the prefix. */ | |
21367 | int die_name_len = strlen (die_name); | |
43816ebc TT |
21368 | int actual_name_len = strlen (actual_name.get ()); |
21369 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
21370 | |
21371 | /* Test for '::' as a sanity check. */ | |
21372 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 21373 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 21374 | name = obstack_strndup ( |
e3b94546 | 21375 | &objfile->per_bfd->storage_obstack, |
43816ebc | 21376 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
21377 | } |
21378 | } | |
abc72ce4 DE |
21379 | return name; |
21380 | } | |
21381 | } | |
21382 | } | |
21383 | ||
21384 | return NULL; | |
21385 | } | |
21386 | ||
96408a79 SA |
21387 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
21388 | prefix part in such case. See | |
21389 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
21390 | ||
a121b7c1 | 21391 | static const char * |
96408a79 SA |
21392 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
21393 | { | |
21394 | struct attribute *attr; | |
e6a959d6 | 21395 | const char *base; |
96408a79 SA |
21396 | |
21397 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
21398 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
21399 | return NULL; | |
21400 | ||
7d45c7c3 | 21401 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
21402 | return NULL; |
21403 | ||
73b9be8b | 21404 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
21405 | if (attr == NULL || DW_STRING (attr) == NULL) |
21406 | return NULL; | |
21407 | ||
21408 | /* dwarf2_name had to be already called. */ | |
21409 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
21410 | ||
21411 | /* Strip the base name, keep any leading namespaces/classes. */ | |
21412 | base = strrchr (DW_STRING (attr), ':'); | |
21413 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
21414 | return ""; | |
21415 | ||
518817b3 | 21416 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0cf9feb9 TT |
21417 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
21418 | DW_STRING (attr), | |
21419 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
21420 | } |
21421 | ||
fdde2d81 | 21422 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 21423 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 21424 | |
0114d602 DJ |
21425 | For example, if we're within the method foo() in the following |
21426 | code: | |
21427 | ||
21428 | namespace N { | |
21429 | class C { | |
21430 | void foo () { | |
21431 | } | |
21432 | }; | |
21433 | } | |
21434 | ||
21435 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 21436 | |
0d5cff50 | 21437 | static const char * |
e142c38c | 21438 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 21439 | { |
518817b3 SM |
21440 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21441 | = cu->per_cu->dwarf2_per_objfile; | |
0114d602 DJ |
21442 | struct die_info *parent, *spec_die; |
21443 | struct dwarf2_cu *spec_cu; | |
21444 | struct type *parent_type; | |
a121b7c1 | 21445 | const char *retval; |
63d06c5c | 21446 | |
9c37b5ae | 21447 | if (cu->language != language_cplus |
c44af4eb TT |
21448 | && cu->language != language_fortran && cu->language != language_d |
21449 | && cu->language != language_rust) | |
0114d602 DJ |
21450 | return ""; |
21451 | ||
96408a79 SA |
21452 | retval = anonymous_struct_prefix (die, cu); |
21453 | if (retval) | |
21454 | return retval; | |
21455 | ||
0114d602 DJ |
21456 | /* We have to be careful in the presence of DW_AT_specification. |
21457 | For example, with GCC 3.4, given the code | |
21458 | ||
21459 | namespace N { | |
21460 | void foo() { | |
21461 | // Definition of N::foo. | |
21462 | } | |
21463 | } | |
21464 | ||
21465 | then we'll have a tree of DIEs like this: | |
21466 | ||
21467 | 1: DW_TAG_compile_unit | |
21468 | 2: DW_TAG_namespace // N | |
21469 | 3: DW_TAG_subprogram // declaration of N::foo | |
21470 | 4: DW_TAG_subprogram // definition of N::foo | |
21471 | DW_AT_specification // refers to die #3 | |
21472 | ||
21473 | Thus, when processing die #4, we have to pretend that we're in | |
21474 | the context of its DW_AT_specification, namely the contex of die | |
21475 | #3. */ | |
21476 | spec_cu = cu; | |
21477 | spec_die = die_specification (die, &spec_cu); | |
21478 | if (spec_die == NULL) | |
21479 | parent = die->parent; | |
21480 | else | |
63d06c5c | 21481 | { |
0114d602 DJ |
21482 | parent = spec_die->parent; |
21483 | cu = spec_cu; | |
63d06c5c | 21484 | } |
0114d602 DJ |
21485 | |
21486 | if (parent == NULL) | |
21487 | return ""; | |
98bfdba5 PA |
21488 | else if (parent->building_fullname) |
21489 | { | |
21490 | const char *name; | |
21491 | const char *parent_name; | |
21492 | ||
21493 | /* It has been seen on RealView 2.2 built binaries, | |
21494 | DW_TAG_template_type_param types actually _defined_ as | |
21495 | children of the parent class: | |
21496 | ||
21497 | enum E {}; | |
21498 | template class <class Enum> Class{}; | |
21499 | Class<enum E> class_e; | |
21500 | ||
21501 | 1: DW_TAG_class_type (Class) | |
21502 | 2: DW_TAG_enumeration_type (E) | |
21503 | 3: DW_TAG_enumerator (enum1:0) | |
21504 | 3: DW_TAG_enumerator (enum2:1) | |
21505 | ... | |
21506 | 2: DW_TAG_template_type_param | |
21507 | DW_AT_type DW_FORM_ref_udata (E) | |
21508 | ||
21509 | Besides being broken debug info, it can put GDB into an | |
21510 | infinite loop. Consider: | |
21511 | ||
21512 | When we're building the full name for Class<E>, we'll start | |
21513 | at Class, and go look over its template type parameters, | |
21514 | finding E. We'll then try to build the full name of E, and | |
21515 | reach here. We're now trying to build the full name of E, | |
21516 | and look over the parent DIE for containing scope. In the | |
21517 | broken case, if we followed the parent DIE of E, we'd again | |
21518 | find Class, and once again go look at its template type | |
21519 | arguments, etc., etc. Simply don't consider such parent die | |
21520 | as source-level parent of this die (it can't be, the language | |
21521 | doesn't allow it), and break the loop here. */ | |
21522 | name = dwarf2_name (die, cu); | |
21523 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 21524 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
21525 | name ? name : "<unknown>", |
21526 | parent_name ? parent_name : "<unknown>"); | |
21527 | return ""; | |
21528 | } | |
63d06c5c | 21529 | else |
0114d602 DJ |
21530 | switch (parent->tag) |
21531 | { | |
63d06c5c | 21532 | case DW_TAG_namespace: |
0114d602 | 21533 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
21534 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
21535 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
21536 | Work around this problem here. */ | |
21537 | if (cu->language == language_cplus | |
e86ca25f | 21538 | && strcmp (TYPE_NAME (parent_type), "::") == 0) |
acebe513 | 21539 | return ""; |
0114d602 | 21540 | /* We give a name to even anonymous namespaces. */ |
e86ca25f | 21541 | return TYPE_NAME (parent_type); |
63d06c5c | 21542 | case DW_TAG_class_type: |
680b30c7 | 21543 | case DW_TAG_interface_type: |
63d06c5c | 21544 | case DW_TAG_structure_type: |
0114d602 | 21545 | case DW_TAG_union_type: |
f55ee35c | 21546 | case DW_TAG_module: |
0114d602 | 21547 | parent_type = read_type_die (parent, cu); |
e86ca25f TT |
21548 | if (TYPE_NAME (parent_type) != NULL) |
21549 | return TYPE_NAME (parent_type); | |
0114d602 DJ |
21550 | else |
21551 | /* An anonymous structure is only allowed non-static data | |
21552 | members; no typedefs, no member functions, et cetera. | |
21553 | So it does not need a prefix. */ | |
21554 | return ""; | |
abc72ce4 | 21555 | case DW_TAG_compile_unit: |
95554aad | 21556 | case DW_TAG_partial_unit: |
abc72ce4 DE |
21557 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
21558 | if (cu->language == language_cplus | |
fd5866f6 | 21559 | && !dwarf2_per_objfile->types.empty () |
abc72ce4 DE |
21560 | && die->child != NULL |
21561 | && (die->tag == DW_TAG_class_type | |
21562 | || die->tag == DW_TAG_structure_type | |
21563 | || die->tag == DW_TAG_union_type)) | |
21564 | { | |
43816ebc | 21565 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
21566 | if (name != NULL) |
21567 | return name; | |
21568 | } | |
21569 | return ""; | |
0a4b0913 AB |
21570 | case DW_TAG_subprogram: |
21571 | /* Nested subroutines in Fortran get a prefix with the name | |
21572 | of the parent's subroutine. */ | |
21573 | if (cu->language == language_fortran) | |
21574 | { | |
21575 | if ((die->tag == DW_TAG_subprogram) | |
21576 | && (dwarf2_name (parent, cu) != NULL)) | |
21577 | return dwarf2_name (parent, cu); | |
21578 | } | |
21579 | return determine_prefix (parent, cu); | |
3d567982 TT |
21580 | case DW_TAG_enumeration_type: |
21581 | parent_type = read_type_die (parent, cu); | |
21582 | if (TYPE_DECLARED_CLASS (parent_type)) | |
21583 | { | |
e86ca25f TT |
21584 | if (TYPE_NAME (parent_type) != NULL) |
21585 | return TYPE_NAME (parent_type); | |
3d567982 TT |
21586 | return ""; |
21587 | } | |
21588 | /* Fall through. */ | |
63d06c5c | 21589 | default: |
8176b9b8 | 21590 | return determine_prefix (parent, cu); |
63d06c5c | 21591 | } |
63d06c5c DC |
21592 | } |
21593 | ||
3e43a32a MS |
21594 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
21595 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
21596 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
21597 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
21598 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 21599 | |
f55ee35c | 21600 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
21601 | |
21602 | static char * | |
f55ee35c JK |
21603 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
21604 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 21605 | { |
f55ee35c | 21606 | const char *lead = ""; |
5c315b68 | 21607 | const char *sep; |
63d06c5c | 21608 | |
3e43a32a MS |
21609 | if (suffix == NULL || suffix[0] == '\0' |
21610 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 21611 | sep = ""; |
45280282 IB |
21612 | else if (cu->language == language_d) |
21613 | { | |
21614 | /* For D, the 'main' function could be defined in any module, but it | |
21615 | should never be prefixed. */ | |
21616 | if (strcmp (suffix, "D main") == 0) | |
21617 | { | |
21618 | prefix = ""; | |
21619 | sep = ""; | |
21620 | } | |
21621 | else | |
21622 | sep = "."; | |
21623 | } | |
f55ee35c JK |
21624 | else if (cu->language == language_fortran && physname) |
21625 | { | |
21626 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
21627 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
21628 | ||
21629 | lead = "__"; | |
21630 | sep = "_MOD_"; | |
21631 | } | |
987504bb JJ |
21632 | else |
21633 | sep = "::"; | |
63d06c5c | 21634 | |
6dd47d34 DE |
21635 | if (prefix == NULL) |
21636 | prefix = ""; | |
21637 | if (suffix == NULL) | |
21638 | suffix = ""; | |
21639 | ||
987504bb JJ |
21640 | if (obs == NULL) |
21641 | { | |
3e43a32a | 21642 | char *retval |
224c3ddb SM |
21643 | = ((char *) |
21644 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 21645 | |
f55ee35c JK |
21646 | strcpy (retval, lead); |
21647 | strcat (retval, prefix); | |
6dd47d34 DE |
21648 | strcat (retval, sep); |
21649 | strcat (retval, suffix); | |
63d06c5c DC |
21650 | return retval; |
21651 | } | |
987504bb JJ |
21652 | else |
21653 | { | |
21654 | /* We have an obstack. */ | |
f55ee35c | 21655 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 21656 | } |
63d06c5c DC |
21657 | } |
21658 | ||
c906108c SS |
21659 | /* Return sibling of die, NULL if no sibling. */ |
21660 | ||
f9aca02d | 21661 | static struct die_info * |
fba45db2 | 21662 | sibling_die (struct die_info *die) |
c906108c | 21663 | { |
639d11d3 | 21664 | return die->sibling; |
c906108c SS |
21665 | } |
21666 | ||
71c25dea TT |
21667 | /* Get name of a die, return NULL if not found. */ |
21668 | ||
15d034d0 TT |
21669 | static const char * |
21670 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
21671 | struct obstack *obstack) |
21672 | { | |
21673 | if (name && cu->language == language_cplus) | |
21674 | { | |
2f408ecb | 21675 | std::string canon_name = cp_canonicalize_string (name); |
71c25dea | 21676 | |
2f408ecb | 21677 | if (!canon_name.empty ()) |
71c25dea | 21678 | { |
2f408ecb | 21679 | if (canon_name != name) |
efba19b0 | 21680 | name = obstack_strdup (obstack, canon_name); |
71c25dea TT |
21681 | } |
21682 | } | |
21683 | ||
21684 | return name; | |
c906108c SS |
21685 | } |
21686 | ||
96553a0c DE |
21687 | /* Get name of a die, return NULL if not found. |
21688 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 21689 | |
15d034d0 | 21690 | static const char * |
e142c38c | 21691 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
21692 | { |
21693 | struct attribute *attr; | |
518817b3 | 21694 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
9219021c | 21695 | |
e142c38c | 21696 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 21697 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 21698 | && die->tag != DW_TAG_namespace |
53832f31 TT |
21699 | && die->tag != DW_TAG_class_type |
21700 | && die->tag != DW_TAG_interface_type | |
21701 | && die->tag != DW_TAG_structure_type | |
21702 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
21703 | return NULL; |
21704 | ||
21705 | switch (die->tag) | |
21706 | { | |
21707 | case DW_TAG_compile_unit: | |
95554aad | 21708 | case DW_TAG_partial_unit: |
71c25dea TT |
21709 | /* Compilation units have a DW_AT_name that is a filename, not |
21710 | a source language identifier. */ | |
21711 | case DW_TAG_enumeration_type: | |
21712 | case DW_TAG_enumerator: | |
21713 | /* These tags always have simple identifiers already; no need | |
21714 | to canonicalize them. */ | |
21715 | return DW_STRING (attr); | |
907af001 | 21716 | |
96553a0c DE |
21717 | case DW_TAG_namespace: |
21718 | if (attr != NULL && DW_STRING (attr) != NULL) | |
21719 | return DW_STRING (attr); | |
21720 | return CP_ANONYMOUS_NAMESPACE_STR; | |
21721 | ||
907af001 UW |
21722 | case DW_TAG_class_type: |
21723 | case DW_TAG_interface_type: | |
21724 | case DW_TAG_structure_type: | |
21725 | case DW_TAG_union_type: | |
21726 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
21727 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
21728 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
21729 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 21730 | if (attr && DW_STRING (attr) |
61012eef GB |
21731 | && (startswith (DW_STRING (attr), "._") |
21732 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 21733 | return NULL; |
53832f31 TT |
21734 | |
21735 | /* GCC might emit a nameless typedef that has a linkage name. See | |
21736 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
21737 | if (!attr || DW_STRING (attr) == NULL) | |
21738 | { | |
73b9be8b | 21739 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
21740 | if (attr == NULL || DW_STRING (attr) == NULL) |
21741 | return NULL; | |
21742 | ||
df5c6c50 JK |
21743 | /* Avoid demangling DW_STRING (attr) the second time on a second |
21744 | call for the same DIE. */ | |
21745 | if (!DW_STRING_IS_CANONICAL (attr)) | |
53832f31 | 21746 | { |
43816ebc TT |
21747 | gdb::unique_xmalloc_ptr<char> demangled |
21748 | (gdb_demangle (DW_STRING (attr), DMGL_TYPES)); | |
4f180d53 AT |
21749 | if (demangled == nullptr) |
21750 | return nullptr; | |
43816ebc | 21751 | |
e6a959d6 | 21752 | const char *base; |
96408a79 | 21753 | |
53832f31 | 21754 | /* FIXME: we already did this for the partial symbol... */ |
34a68019 | 21755 | DW_STRING (attr) |
021887d8 | 21756 | = obstack_strdup (&objfile->per_bfd->storage_obstack, |
43816ebc | 21757 | demangled.get ()); |
53832f31 | 21758 | DW_STRING_IS_CANONICAL (attr) = 1; |
96408a79 SA |
21759 | |
21760 | /* Strip any leading namespaces/classes, keep only the base name. | |
21761 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
21762 | base = strrchr (DW_STRING (attr), ':'); | |
21763 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
21764 | return &base[1]; | |
21765 | else | |
21766 | return DW_STRING (attr); | |
53832f31 TT |
21767 | } |
21768 | } | |
907af001 UW |
21769 | break; |
21770 | ||
71c25dea | 21771 | default: |
907af001 UW |
21772 | break; |
21773 | } | |
21774 | ||
21775 | if (!DW_STRING_IS_CANONICAL (attr)) | |
21776 | { | |
21777 | DW_STRING (attr) | |
21778 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
e3b94546 | 21779 | &objfile->per_bfd->storage_obstack); |
907af001 | 21780 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 21781 | } |
907af001 | 21782 | return DW_STRING (attr); |
9219021c DC |
21783 | } |
21784 | ||
21785 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
21786 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
21787 | containing the return value on output. */ | |
9219021c DC |
21788 | |
21789 | static struct die_info * | |
f2f0e013 | 21790 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
21791 | { |
21792 | struct attribute *attr; | |
9219021c | 21793 | |
f2f0e013 | 21794 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
21795 | if (attr == NULL) |
21796 | return NULL; | |
21797 | ||
f2f0e013 | 21798 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
21799 | } |
21800 | ||
fa9c3fa0 TT |
21801 | /* A convenience function that returns an "unknown" DWARF name, |
21802 | including the value of V. STR is the name of the entity being | |
21803 | printed, e.g., "TAG". */ | |
21804 | ||
21805 | static const char * | |
21806 | dwarf_unknown (const char *str, unsigned v) | |
21807 | { | |
21808 | char *cell = get_print_cell (); | |
21809 | xsnprintf (cell, PRINT_CELL_SIZE, "DW_%s_<unknown: %u>", str, v); | |
21810 | return cell; | |
21811 | } | |
21812 | ||
c906108c SS |
21813 | /* Convert a DIE tag into its string name. */ |
21814 | ||
f39c6ffd | 21815 | static const char * |
aa1ee363 | 21816 | dwarf_tag_name (unsigned tag) |
c906108c | 21817 | { |
f39c6ffd TT |
21818 | const char *name = get_DW_TAG_name (tag); |
21819 | ||
21820 | if (name == NULL) | |
fa9c3fa0 | 21821 | return dwarf_unknown ("TAG", tag); |
f39c6ffd TT |
21822 | |
21823 | return name; | |
c906108c SS |
21824 | } |
21825 | ||
21826 | /* Convert a DWARF attribute code into its string name. */ | |
21827 | ||
f39c6ffd | 21828 | static const char * |
aa1ee363 | 21829 | dwarf_attr_name (unsigned attr) |
c906108c | 21830 | { |
f39c6ffd TT |
21831 | const char *name; |
21832 | ||
c764a876 | 21833 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
21834 | if (attr == DW_AT_MIPS_fde) |
21835 | return "DW_AT_MIPS_fde"; | |
21836 | #else | |
21837 | if (attr == DW_AT_HP_block_index) | |
21838 | return "DW_AT_HP_block_index"; | |
c764a876 | 21839 | #endif |
f39c6ffd TT |
21840 | |
21841 | name = get_DW_AT_name (attr); | |
21842 | ||
21843 | if (name == NULL) | |
fa9c3fa0 | 21844 | return dwarf_unknown ("AT", attr); |
f39c6ffd TT |
21845 | |
21846 | return name; | |
c906108c SS |
21847 | } |
21848 | ||
21849 | /* Convert a DWARF value form code into its string name. */ | |
21850 | ||
f39c6ffd | 21851 | static const char * |
aa1ee363 | 21852 | dwarf_form_name (unsigned form) |
c906108c | 21853 | { |
f39c6ffd TT |
21854 | const char *name = get_DW_FORM_name (form); |
21855 | ||
21856 | if (name == NULL) | |
fa9c3fa0 | 21857 | return dwarf_unknown ("FORM", form); |
f39c6ffd TT |
21858 | |
21859 | return name; | |
c906108c SS |
21860 | } |
21861 | ||
a121b7c1 | 21862 | static const char * |
fba45db2 | 21863 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
21864 | { |
21865 | if (mybool) | |
21866 | return "TRUE"; | |
21867 | else | |
21868 | return "FALSE"; | |
21869 | } | |
21870 | ||
21871 | /* Convert a DWARF type code into its string name. */ | |
21872 | ||
f39c6ffd | 21873 | static const char * |
aa1ee363 | 21874 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 21875 | { |
f39c6ffd | 21876 | const char *name = get_DW_ATE_name (enc); |
c906108c | 21877 | |
f39c6ffd | 21878 | if (name == NULL) |
fa9c3fa0 | 21879 | return dwarf_unknown ("ATE", enc); |
c906108c | 21880 | |
f39c6ffd | 21881 | return name; |
c906108c | 21882 | } |
c906108c | 21883 | |
f9aca02d | 21884 | static void |
d97bc12b | 21885 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
21886 | { |
21887 | unsigned int i; | |
21888 | ||
d97bc12b | 21889 | print_spaces (indent, f); |
9d8780f0 | 21890 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 21891 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 21892 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
21893 | |
21894 | if (die->parent != NULL) | |
21895 | { | |
21896 | print_spaces (indent, f); | |
9d8780f0 SM |
21897 | fprintf_unfiltered (f, " parent at offset: %s\n", |
21898 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
21899 | } |
21900 | ||
21901 | print_spaces (indent, f); | |
21902 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 21903 | dwarf_bool_name (die->child != NULL)); |
c906108c | 21904 | |
d97bc12b DE |
21905 | print_spaces (indent, f); |
21906 | fprintf_unfiltered (f, " attributes:\n"); | |
21907 | ||
c906108c SS |
21908 | for (i = 0; i < die->num_attrs; ++i) |
21909 | { | |
d97bc12b DE |
21910 | print_spaces (indent, f); |
21911 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
21912 | dwarf_attr_name (die->attrs[i].name), |
21913 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 21914 | |
c906108c SS |
21915 | switch (die->attrs[i].form) |
21916 | { | |
c906108c | 21917 | case DW_FORM_addr: |
336d760d | 21918 | case DW_FORM_addrx: |
3019eac3 | 21919 | case DW_FORM_GNU_addr_index: |
d97bc12b | 21920 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 21921 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
21922 | break; |
21923 | case DW_FORM_block2: | |
21924 | case DW_FORM_block4: | |
21925 | case DW_FORM_block: | |
21926 | case DW_FORM_block1: | |
56eb65bd SP |
21927 | fprintf_unfiltered (f, "block: size %s", |
21928 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 21929 | break; |
2dc7f7b3 | 21930 | case DW_FORM_exprloc: |
56eb65bd SP |
21931 | fprintf_unfiltered (f, "expression: size %s", |
21932 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 21933 | break; |
0224619f JK |
21934 | case DW_FORM_data16: |
21935 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
21936 | break; | |
4568ecf9 DE |
21937 | case DW_FORM_ref_addr: |
21938 | fprintf_unfiltered (f, "ref address: "); | |
21939 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
21940 | break; | |
36586728 TT |
21941 | case DW_FORM_GNU_ref_alt: |
21942 | fprintf_unfiltered (f, "alt ref address: "); | |
21943 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
21944 | break; | |
10b3939b DJ |
21945 | case DW_FORM_ref1: |
21946 | case DW_FORM_ref2: | |
21947 | case DW_FORM_ref4: | |
4568ecf9 DE |
21948 | case DW_FORM_ref8: |
21949 | case DW_FORM_ref_udata: | |
d97bc12b | 21950 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 21951 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 21952 | break; |
c906108c SS |
21953 | case DW_FORM_data1: |
21954 | case DW_FORM_data2: | |
21955 | case DW_FORM_data4: | |
ce5d95e1 | 21956 | case DW_FORM_data8: |
c906108c SS |
21957 | case DW_FORM_udata: |
21958 | case DW_FORM_sdata: | |
43bbcdc2 PH |
21959 | fprintf_unfiltered (f, "constant: %s", |
21960 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 21961 | break; |
2dc7f7b3 TT |
21962 | case DW_FORM_sec_offset: |
21963 | fprintf_unfiltered (f, "section offset: %s", | |
21964 | pulongest (DW_UNSND (&die->attrs[i]))); | |
21965 | break; | |
55f1336d | 21966 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
21967 | fprintf_unfiltered (f, "signature: %s", |
21968 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 21969 | break; |
c906108c | 21970 | case DW_FORM_string: |
4bdf3d34 | 21971 | case DW_FORM_strp: |
43988095 | 21972 | case DW_FORM_line_strp: |
cf532bd1 | 21973 | case DW_FORM_strx: |
3019eac3 | 21974 | case DW_FORM_GNU_str_index: |
36586728 | 21975 | case DW_FORM_GNU_strp_alt: |
8285870a | 21976 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 21977 | DW_STRING (&die->attrs[i]) |
8285870a JK |
21978 | ? DW_STRING (&die->attrs[i]) : "", |
21979 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
21980 | break; |
21981 | case DW_FORM_flag: | |
21982 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 21983 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 21984 | else |
d97bc12b | 21985 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 21986 | break; |
2dc7f7b3 TT |
21987 | case DW_FORM_flag_present: |
21988 | fprintf_unfiltered (f, "flag: TRUE"); | |
21989 | break; | |
a8329558 | 21990 | case DW_FORM_indirect: |
0963b4bd MS |
21991 | /* The reader will have reduced the indirect form to |
21992 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 21993 | fprintf_unfiltered (f, |
3e43a32a | 21994 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 21995 | break; |
663c44ac JK |
21996 | case DW_FORM_implicit_const: |
21997 | fprintf_unfiltered (f, "constant: %s", | |
21998 | plongest (DW_SND (&die->attrs[i]))); | |
21999 | break; | |
c906108c | 22000 | default: |
d97bc12b | 22001 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 22002 | die->attrs[i].form); |
d97bc12b | 22003 | break; |
c906108c | 22004 | } |
d97bc12b | 22005 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
22006 | } |
22007 | } | |
22008 | ||
f9aca02d | 22009 | static void |
d97bc12b | 22010 | dump_die_for_error (struct die_info *die) |
c906108c | 22011 | { |
d97bc12b DE |
22012 | dump_die_shallow (gdb_stderr, 0, die); |
22013 | } | |
22014 | ||
22015 | static void | |
22016 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
22017 | { | |
22018 | int indent = level * 4; | |
22019 | ||
22020 | gdb_assert (die != NULL); | |
22021 | ||
22022 | if (level >= max_level) | |
22023 | return; | |
22024 | ||
22025 | dump_die_shallow (f, indent, die); | |
22026 | ||
22027 | if (die->child != NULL) | |
c906108c | 22028 | { |
d97bc12b DE |
22029 | print_spaces (indent, f); |
22030 | fprintf_unfiltered (f, " Children:"); | |
22031 | if (level + 1 < max_level) | |
22032 | { | |
22033 | fprintf_unfiltered (f, "\n"); | |
22034 | dump_die_1 (f, level + 1, max_level, die->child); | |
22035 | } | |
22036 | else | |
22037 | { | |
3e43a32a MS |
22038 | fprintf_unfiltered (f, |
22039 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
22040 | } |
22041 | } | |
22042 | ||
22043 | if (die->sibling != NULL && level > 0) | |
22044 | { | |
22045 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
22046 | } |
22047 | } | |
22048 | ||
d97bc12b DE |
22049 | /* This is called from the pdie macro in gdbinit.in. |
22050 | It's not static so gcc will keep a copy callable from gdb. */ | |
22051 | ||
22052 | void | |
22053 | dump_die (struct die_info *die, int max_level) | |
22054 | { | |
22055 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
22056 | } | |
22057 | ||
f9aca02d | 22058 | static void |
51545339 | 22059 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22060 | { |
51545339 | 22061 | void **slot; |
c906108c | 22062 | |
9c541725 PA |
22063 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
22064 | to_underlying (die->sect_off), | |
b64f50a1 | 22065 | INSERT); |
51545339 DJ |
22066 | |
22067 | *slot = die; | |
c906108c SS |
22068 | } |
22069 | ||
b64f50a1 JK |
22070 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
22071 | required kind. */ | |
22072 | ||
22073 | static sect_offset | |
ff39bb5e | 22074 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 22075 | { |
cd6c91b4 | 22076 | if (attr->form_is_ref ()) |
9c541725 | 22077 | return (sect_offset) DW_UNSND (attr); |
93311388 | 22078 | |
b98664d3 | 22079 | complaint (_("unsupported die ref attribute form: '%s'"), |
93311388 | 22080 | dwarf_form_name (attr->form)); |
9c541725 | 22081 | return {}; |
c906108c SS |
22082 | } |
22083 | ||
43bbcdc2 PH |
22084 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
22085 | * the value held by the attribute is not constant. */ | |
a02abb62 | 22086 | |
43bbcdc2 | 22087 | static LONGEST |
ff39bb5e | 22088 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 | 22089 | { |
663c44ac | 22090 | if (attr->form == DW_FORM_sdata || attr->form == DW_FORM_implicit_const) |
a02abb62 JB |
22091 | return DW_SND (attr); |
22092 | else if (attr->form == DW_FORM_udata | |
22093 | || attr->form == DW_FORM_data1 | |
22094 | || attr->form == DW_FORM_data2 | |
22095 | || attr->form == DW_FORM_data4 | |
22096 | || attr->form == DW_FORM_data8) | |
22097 | return DW_UNSND (attr); | |
22098 | else | |
22099 | { | |
cd6c91b4 | 22100 | /* For DW_FORM_data16 see attribute::form_is_constant. */ |
b98664d3 | 22101 | complaint (_("Attribute value is not a constant (%s)"), |
a02abb62 JB |
22102 | dwarf_form_name (attr->form)); |
22103 | return default_value; | |
22104 | } | |
22105 | } | |
22106 | ||
348e048f DE |
22107 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
22108 | On entry *REF_CU is the CU of SRC_DIE. | |
22109 | On exit *REF_CU is the CU of the result. */ | |
22110 | ||
22111 | static struct die_info * | |
ff39bb5e | 22112 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
22113 | struct dwarf2_cu **ref_cu) |
22114 | { | |
22115 | struct die_info *die; | |
22116 | ||
cd6c91b4 | 22117 | if (attr->form_is_ref ()) |
348e048f | 22118 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 22119 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
22120 | die = follow_die_sig (src_die, attr, ref_cu); |
22121 | else | |
22122 | { | |
22123 | dump_die_for_error (src_die); | |
22124 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
518817b3 | 22125 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
348e048f DE |
22126 | } |
22127 | ||
22128 | return die; | |
03dd20cc DJ |
22129 | } |
22130 | ||
5c631832 | 22131 | /* Follow reference OFFSET. |
673bfd45 DE |
22132 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
22133 | On exit *REF_CU is the CU of the result. | |
22134 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 22135 | |
f9aca02d | 22136 | static struct die_info * |
9c541725 | 22137 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 22138 | struct dwarf2_cu **ref_cu) |
c906108c | 22139 | { |
10b3939b | 22140 | struct die_info temp_die; |
f2f0e013 | 22141 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
518817b3 SM |
22142 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22143 | = cu->per_cu->dwarf2_per_objfile; | |
10b3939b | 22144 | |
348e048f DE |
22145 | gdb_assert (cu->per_cu != NULL); |
22146 | ||
98bfdba5 PA |
22147 | target_cu = cu; |
22148 | ||
3019eac3 | 22149 | if (cu->per_cu->is_debug_types) |
348e048f DE |
22150 | { |
22151 | /* .debug_types CUs cannot reference anything outside their CU. | |
22152 | If they need to, they have to reference a signatured type via | |
55f1336d | 22153 | DW_FORM_ref_sig8. */ |
4057dfde | 22154 | if (!cu->header.offset_in_cu_p (sect_off)) |
5c631832 | 22155 | return NULL; |
348e048f | 22156 | } |
36586728 | 22157 | else if (offset_in_dwz != cu->per_cu->is_dwz |
4057dfde | 22158 | || !cu->header.offset_in_cu_p (sect_off)) |
10b3939b DJ |
22159 | { |
22160 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 22161 | |
9c541725 | 22162 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 22163 | dwarf2_per_objfile); |
03dd20cc DJ |
22164 | |
22165 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad | 22166 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 22167 | load_full_comp_unit (per_cu, false, cu->language); |
03dd20cc | 22168 | |
10b3939b DJ |
22169 | target_cu = per_cu->cu; |
22170 | } | |
98bfdba5 PA |
22171 | else if (cu->dies == NULL) |
22172 | { | |
22173 | /* We're loading full DIEs during partial symbol reading. */ | |
22174 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
58f0c718 | 22175 | load_full_comp_unit (cu->per_cu, false, language_minimal); |
98bfdba5 | 22176 | } |
c906108c | 22177 | |
f2f0e013 | 22178 | *ref_cu = target_cu; |
9c541725 | 22179 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
22180 | |
22181 | if (target_cu != cu) | |
22182 | target_cu->ancestor = cu; | |
22183 | ||
9a3c8263 | 22184 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
22185 | &temp_die, |
22186 | to_underlying (sect_off)); | |
5c631832 | 22187 | } |
10b3939b | 22188 | |
5c631832 JK |
22189 | /* Follow reference attribute ATTR of SRC_DIE. |
22190 | On entry *REF_CU is the CU of SRC_DIE. | |
22191 | On exit *REF_CU is the CU of the result. */ | |
22192 | ||
22193 | static struct die_info * | |
ff39bb5e | 22194 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
22195 | struct dwarf2_cu **ref_cu) |
22196 | { | |
9c541725 | 22197 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
22198 | struct dwarf2_cu *cu = *ref_cu; |
22199 | struct die_info *die; | |
22200 | ||
9c541725 | 22201 | die = follow_die_offset (sect_off, |
36586728 TT |
22202 | (attr->form == DW_FORM_GNU_ref_alt |
22203 | || cu->per_cu->is_dwz), | |
22204 | ref_cu); | |
5c631832 | 22205 | if (!die) |
9d8780f0 SM |
22206 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
22207 | "at %s [in module %s]"), | |
22208 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
518817b3 | 22209 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
348e048f | 22210 | |
5c631832 JK |
22211 | return die; |
22212 | } | |
22213 | ||
d4c9a4f8 | 22214 | /* See read.h. */ |
5c631832 JK |
22215 | |
22216 | struct dwarf2_locexpr_baton | |
9c541725 | 22217 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
d4c9a4f8 | 22218 | dwarf2_per_cu_data *per_cu, |
8b9737bf | 22219 | CORE_ADDR (*get_frame_pc) (void *baton), |
e4a62c65 | 22220 | void *baton, bool resolve_abstract_p) |
5c631832 | 22221 | { |
918dd910 | 22222 | struct dwarf2_cu *cu; |
5c631832 JK |
22223 | struct die_info *die; |
22224 | struct attribute *attr; | |
22225 | struct dwarf2_locexpr_baton retval; | |
12359b5e SM |
22226 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
22227 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8cf6f0b1 | 22228 | |
918dd910 | 22229 | if (per_cu->cu == NULL) |
58f0c718 | 22230 | load_cu (per_cu, false); |
918dd910 | 22231 | cu = per_cu->cu; |
cc12ce38 DE |
22232 | if (cu == NULL) |
22233 | { | |
22234 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22235 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
22236 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
22237 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 22238 | } |
918dd910 | 22239 | |
9c541725 | 22240 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 22241 | if (!die) |
9d8780f0 SM |
22242 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
22243 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
22244 | |
22245 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 22246 | if (!attr && resolve_abstract_p |
3360b6e7 | 22247 | && (dwarf2_per_objfile->abstract_to_concrete.find (die->sect_off) |
e4a62c65 TV |
22248 | != dwarf2_per_objfile->abstract_to_concrete.end ())) |
22249 | { | |
22250 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
b3b3bada | 22251 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
eba4caf2 | 22252 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
e4a62c65 | 22253 | |
3360b6e7 TV |
22254 | for (const auto &cand_off |
22255 | : dwarf2_per_objfile->abstract_to_concrete[die->sect_off]) | |
e4a62c65 | 22256 | { |
3360b6e7 TV |
22257 | struct dwarf2_cu *cand_cu = cu; |
22258 | struct die_info *cand | |
22259 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
22260 | if (!cand | |
22261 | || !cand->parent | |
e4a62c65 TV |
22262 | || cand->parent->tag != DW_TAG_subprogram) |
22263 | continue; | |
22264 | ||
22265 | CORE_ADDR pc_low, pc_high; | |
22266 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
22267 | if (pc_low == ((CORE_ADDR) -1)) |
22268 | continue; | |
22269 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
22270 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
22271 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
22272 | continue; |
22273 | ||
22274 | die = cand; | |
22275 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
22276 | break; | |
22277 | } | |
22278 | } | |
22279 | ||
5c631832 JK |
22280 | if (!attr) |
22281 | { | |
e103e986 JK |
22282 | /* DWARF: "If there is no such attribute, then there is no effect.". |
22283 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 22284 | |
e103e986 | 22285 | retval.data = NULL; |
5c631832 JK |
22286 | retval.size = 0; |
22287 | } | |
cd6c91b4 | 22288 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
22289 | { |
22290 | struct dwarf2_loclist_baton loclist_baton; | |
22291 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
22292 | size_t size; | |
22293 | ||
22294 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
22295 | ||
22296 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
22297 | &size, pc); | |
22298 | retval.size = size; | |
22299 | } | |
5c631832 JK |
22300 | else |
22301 | { | |
4fc6c0d5 | 22302 | if (!attr->form_is_block ()) |
9d8780f0 | 22303 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 22304 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 22305 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
22306 | |
22307 | retval.data = DW_BLOCK (attr)->data; | |
22308 | retval.size = DW_BLOCK (attr)->size; | |
22309 | } | |
22310 | retval.per_cu = cu->per_cu; | |
918dd910 | 22311 | |
ed2dc618 | 22312 | age_cached_comp_units (dwarf2_per_objfile); |
918dd910 | 22313 | |
5c631832 | 22314 | return retval; |
348e048f DE |
22315 | } |
22316 | ||
d4c9a4f8 | 22317 | /* See read.h. */ |
8b9737bf TT |
22318 | |
22319 | struct dwarf2_locexpr_baton | |
22320 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
d4c9a4f8 | 22321 | dwarf2_per_cu_data *per_cu, |
8b9737bf TT |
22322 | CORE_ADDR (*get_frame_pc) (void *baton), |
22323 | void *baton) | |
22324 | { | |
9c541725 | 22325 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 22326 | |
9c541725 | 22327 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, get_frame_pc, baton); |
8b9737bf TT |
22328 | } |
22329 | ||
b6807d98 TT |
22330 | /* Write a constant of a given type as target-ordered bytes into |
22331 | OBSTACK. */ | |
22332 | ||
22333 | static const gdb_byte * | |
22334 | write_constant_as_bytes (struct obstack *obstack, | |
22335 | enum bfd_endian byte_order, | |
22336 | struct type *type, | |
22337 | ULONGEST value, | |
22338 | LONGEST *len) | |
22339 | { | |
22340 | gdb_byte *result; | |
22341 | ||
22342 | *len = TYPE_LENGTH (type); | |
224c3ddb | 22343 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
22344 | store_unsigned_integer (result, *len, byte_order, value); |
22345 | ||
22346 | return result; | |
22347 | } | |
22348 | ||
d4c9a4f8 | 22349 | /* See read.h. */ |
b6807d98 TT |
22350 | |
22351 | const gdb_byte * | |
9c541725 | 22352 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
d4c9a4f8 SM |
22353 | dwarf2_per_cu_data *per_cu, |
22354 | obstack *obstack, | |
b6807d98 TT |
22355 | LONGEST *len) |
22356 | { | |
22357 | struct dwarf2_cu *cu; | |
22358 | struct die_info *die; | |
22359 | struct attribute *attr; | |
22360 | const gdb_byte *result = NULL; | |
22361 | struct type *type; | |
22362 | LONGEST value; | |
22363 | enum bfd_endian byte_order; | |
e3b94546 | 22364 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
b6807d98 | 22365 | |
b6807d98 | 22366 | if (per_cu->cu == NULL) |
58f0c718 | 22367 | load_cu (per_cu, false); |
b6807d98 | 22368 | cu = per_cu->cu; |
cc12ce38 DE |
22369 | if (cu == NULL) |
22370 | { | |
22371 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22372 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
22373 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
22374 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 22375 | } |
b6807d98 | 22376 | |
9c541725 | 22377 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 22378 | if (!die) |
9d8780f0 SM |
22379 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
22380 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
22381 | |
22382 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
22383 | if (attr == NULL) | |
22384 | return NULL; | |
22385 | ||
e3b94546 | 22386 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
22387 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
22388 | ||
22389 | switch (attr->form) | |
22390 | { | |
22391 | case DW_FORM_addr: | |
336d760d | 22392 | case DW_FORM_addrx: |
b6807d98 TT |
22393 | case DW_FORM_GNU_addr_index: |
22394 | { | |
22395 | gdb_byte *tem; | |
22396 | ||
22397 | *len = cu->header.addr_size; | |
224c3ddb | 22398 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
22399 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
22400 | result = tem; | |
22401 | } | |
22402 | break; | |
22403 | case DW_FORM_string: | |
22404 | case DW_FORM_strp: | |
cf532bd1 | 22405 | case DW_FORM_strx: |
b6807d98 TT |
22406 | case DW_FORM_GNU_str_index: |
22407 | case DW_FORM_GNU_strp_alt: | |
22408 | /* DW_STRING is already allocated on the objfile obstack, point | |
22409 | directly to it. */ | |
22410 | result = (const gdb_byte *) DW_STRING (attr); | |
22411 | *len = strlen (DW_STRING (attr)); | |
22412 | break; | |
22413 | case DW_FORM_block1: | |
22414 | case DW_FORM_block2: | |
22415 | case DW_FORM_block4: | |
22416 | case DW_FORM_block: | |
22417 | case DW_FORM_exprloc: | |
0224619f | 22418 | case DW_FORM_data16: |
b6807d98 TT |
22419 | result = DW_BLOCK (attr)->data; |
22420 | *len = DW_BLOCK (attr)->size; | |
22421 | break; | |
22422 | ||
22423 | /* The DW_AT_const_value attributes are supposed to carry the | |
22424 | symbol's value "represented as it would be on the target | |
22425 | architecture." By the time we get here, it's already been | |
22426 | converted to host endianness, so we just need to sign- or | |
22427 | zero-extend it as appropriate. */ | |
22428 | case DW_FORM_data1: | |
22429 | type = die_type (die, cu); | |
22430 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
22431 | if (result == NULL) | |
22432 | result = write_constant_as_bytes (obstack, byte_order, | |
22433 | type, value, len); | |
22434 | break; | |
22435 | case DW_FORM_data2: | |
22436 | type = die_type (die, cu); | |
22437 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
22438 | if (result == NULL) | |
22439 | result = write_constant_as_bytes (obstack, byte_order, | |
22440 | type, value, len); | |
22441 | break; | |
22442 | case DW_FORM_data4: | |
22443 | type = die_type (die, cu); | |
22444 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
22445 | if (result == NULL) | |
22446 | result = write_constant_as_bytes (obstack, byte_order, | |
22447 | type, value, len); | |
22448 | break; | |
22449 | case DW_FORM_data8: | |
22450 | type = die_type (die, cu); | |
22451 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
22452 | if (result == NULL) | |
22453 | result = write_constant_as_bytes (obstack, byte_order, | |
22454 | type, value, len); | |
22455 | break; | |
22456 | ||
22457 | case DW_FORM_sdata: | |
663c44ac | 22458 | case DW_FORM_implicit_const: |
b6807d98 TT |
22459 | type = die_type (die, cu); |
22460 | result = write_constant_as_bytes (obstack, byte_order, | |
22461 | type, DW_SND (attr), len); | |
22462 | break; | |
22463 | ||
22464 | case DW_FORM_udata: | |
22465 | type = die_type (die, cu); | |
22466 | result = write_constant_as_bytes (obstack, byte_order, | |
22467 | type, DW_UNSND (attr), len); | |
22468 | break; | |
22469 | ||
22470 | default: | |
b98664d3 | 22471 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
22472 | dwarf_form_name (attr->form)); |
22473 | break; | |
22474 | } | |
22475 | ||
22476 | return result; | |
22477 | } | |
22478 | ||
d4c9a4f8 | 22479 | /* See read.h. */ |
7942e96e AA |
22480 | |
22481 | struct type * | |
9c541725 | 22482 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
d4c9a4f8 | 22483 | dwarf2_per_cu_data *per_cu) |
7942e96e AA |
22484 | { |
22485 | struct dwarf2_cu *cu; | |
22486 | struct die_info *die; | |
22487 | ||
7942e96e | 22488 | if (per_cu->cu == NULL) |
58f0c718 | 22489 | load_cu (per_cu, false); |
7942e96e AA |
22490 | cu = per_cu->cu; |
22491 | if (!cu) | |
22492 | return NULL; | |
22493 | ||
9c541725 | 22494 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
22495 | if (!die) |
22496 | return NULL; | |
22497 | ||
22498 | return die_type (die, cu); | |
22499 | } | |
22500 | ||
8cb5117c | 22501 | /* See read.h. */ |
8a9b8146 TT |
22502 | |
22503 | struct type * | |
b64f50a1 | 22504 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
22505 | struct dwarf2_per_cu_data *per_cu) |
22506 | { | |
9c541725 | 22507 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
b64f50a1 | 22508 | return get_die_type_at_offset (die_offset_sect, per_cu); |
8a9b8146 TT |
22509 | } |
22510 | ||
ac9ec31b | 22511 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 22512 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
22513 | On exit *REF_CU is the CU of the result. |
22514 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
22515 | |
22516 | static struct die_info * | |
ac9ec31b DE |
22517 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
22518 | struct dwarf2_cu **ref_cu) | |
348e048f | 22519 | { |
348e048f | 22520 | struct die_info temp_die; |
c24bdb02 | 22521 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f DE |
22522 | struct die_info *die; |
22523 | ||
ac9ec31b DE |
22524 | /* While it might be nice to assert sig_type->type == NULL here, |
22525 | we can get here for DW_AT_imported_declaration where we need | |
22526 | the DIE not the type. */ | |
348e048f DE |
22527 | |
22528 | /* If necessary, add it to the queue and load its DIEs. */ | |
22529 | ||
95554aad | 22530 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 22531 | read_signatured_type (sig_type); |
348e048f | 22532 | |
348e048f | 22533 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 22534 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
22535 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
22536 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 22537 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 22538 | to_underlying (temp_die.sect_off)); |
348e048f DE |
22539 | if (die) |
22540 | { | |
ed2dc618 | 22541 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 22542 | = (*ref_cu)->per_cu->dwarf2_per_objfile; |
ed2dc618 | 22543 | |
796a7ff8 DE |
22544 | /* For .gdb_index version 7 keep track of included TUs. |
22545 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
22546 | if (dwarf2_per_objfile->index_table != NULL | |
22547 | && dwarf2_per_objfile->index_table->version <= 7) | |
22548 | { | |
ae640021 | 22549 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
22550 | } |
22551 | ||
348e048f | 22552 | *ref_cu = sig_cu; |
c24bdb02 KS |
22553 | if (sig_cu != cu) |
22554 | sig_cu->ancestor = cu; | |
22555 | ||
348e048f DE |
22556 | return die; |
22557 | } | |
22558 | ||
ac9ec31b DE |
22559 | return NULL; |
22560 | } | |
22561 | ||
22562 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
22563 | On entry *REF_CU is the CU of SRC_DIE. | |
22564 | On exit *REF_CU is the CU of the result. | |
22565 | The result is the DIE of the type. | |
22566 | If the referenced type cannot be found an error is thrown. */ | |
22567 | ||
22568 | static struct die_info * | |
ff39bb5e | 22569 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
22570 | struct dwarf2_cu **ref_cu) |
22571 | { | |
22572 | ULONGEST signature = DW_SIGNATURE (attr); | |
22573 | struct signatured_type *sig_type; | |
22574 | struct die_info *die; | |
22575 | ||
22576 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
22577 | ||
a2ce51a0 | 22578 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
22579 | /* sig_type will be NULL if the signatured type is missing from |
22580 | the debug info. */ | |
22581 | if (sig_type == NULL) | |
22582 | { | |
22583 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
22584 | " from DIE at %s [in module %s]"), |
22585 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 22586 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22587 | } |
22588 | ||
22589 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
22590 | if (die == NULL) | |
22591 | { | |
22592 | dump_die_for_error (src_die); | |
22593 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
22594 | " from DIE at %s [in module %s]"), |
22595 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 22596 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22597 | } |
22598 | ||
22599 | return die; | |
22600 | } | |
22601 | ||
22602 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
22603 | reading in and processing the type unit if necessary. */ | |
22604 | ||
22605 | static struct type * | |
22606 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
22607 | struct dwarf2_cu *cu) | |
22608 | { | |
518817b3 SM |
22609 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22610 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
22611 | struct signatured_type *sig_type; |
22612 | struct dwarf2_cu *type_cu; | |
22613 | struct die_info *type_die; | |
22614 | struct type *type; | |
22615 | ||
a2ce51a0 | 22616 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
22617 | /* sig_type will be NULL if the signatured type is missing from |
22618 | the debug info. */ | |
22619 | if (sig_type == NULL) | |
22620 | { | |
b98664d3 | 22621 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
22622 | " from DIE at %s [in module %s]"), |
22623 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22624 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22625 | return build_error_marker_type (cu, die); |
22626 | } | |
22627 | ||
22628 | /* If we already know the type we're done. */ | |
22629 | if (sig_type->type != NULL) | |
22630 | return sig_type->type; | |
22631 | ||
22632 | type_cu = cu; | |
22633 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
22634 | if (type_die != NULL) | |
22635 | { | |
22636 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
22637 | is created. This is important, for example, because for c++ classes | |
22638 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
22639 | type = read_type_die (type_die, type_cu); | |
22640 | if (type == NULL) | |
22641 | { | |
b98664d3 | 22642 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
22643 | " referenced from DIE at %s [in module %s]"), |
22644 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22645 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22646 | type = build_error_marker_type (cu, die); |
22647 | } | |
22648 | } | |
22649 | else | |
22650 | { | |
b98664d3 | 22651 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
22652 | " from DIE at %s [in module %s]"), |
22653 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22654 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22655 | type = build_error_marker_type (cu, die); |
22656 | } | |
22657 | sig_type->type = type; | |
22658 | ||
22659 | return type; | |
22660 | } | |
22661 | ||
22662 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
22663 | reading in and processing the type unit if necessary. */ | |
22664 | ||
22665 | static struct type * | |
ff39bb5e | 22666 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 22667 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
22668 | { |
22669 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 22670 | if (attr->form_is_ref ()) |
ac9ec31b DE |
22671 | { |
22672 | struct dwarf2_cu *type_cu = cu; | |
22673 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
22674 | ||
22675 | return read_type_die (type_die, type_cu); | |
22676 | } | |
22677 | else if (attr->form == DW_FORM_ref_sig8) | |
22678 | { | |
22679 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
22680 | } | |
22681 | else | |
22682 | { | |
518817b3 SM |
22683 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22684 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 22685 | |
b98664d3 | 22686 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
22687 | " at %s [in module %s]"), |
22688 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
4262abfb | 22689 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22690 | return build_error_marker_type (cu, die); |
22691 | } | |
348e048f DE |
22692 | } |
22693 | ||
e5fe5e75 | 22694 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
22695 | |
22696 | static void | |
e5fe5e75 | 22697 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 22698 | { |
52dc124a | 22699 | struct signatured_type *sig_type; |
348e048f | 22700 | |
f4dc4d17 | 22701 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
197400e8 | 22702 | gdb_assert (! per_cu->type_unit_group_p ()); |
f4dc4d17 | 22703 | |
6721b2ec DE |
22704 | /* We have the per_cu, but we need the signatured_type. |
22705 | Fortunately this is an easy translation. */ | |
22706 | gdb_assert (per_cu->is_debug_types); | |
22707 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 22708 | |
6721b2ec | 22709 | gdb_assert (per_cu->cu == NULL); |
348e048f | 22710 | |
52dc124a | 22711 | read_signatured_type (sig_type); |
348e048f | 22712 | |
6721b2ec | 22713 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
22714 | } |
22715 | ||
3019eac3 DE |
22716 | /* Read in a signatured type and build its CU and DIEs. |
22717 | If the type is a stub for the real type in a DWO file, | |
22718 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
22719 | |
22720 | static void | |
22721 | read_signatured_type (struct signatured_type *sig_type) | |
22722 | { | |
22723 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 22724 | |
3019eac3 | 22725 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 22726 | gdb_assert (per_cu->cu == NULL); |
348e048f | 22727 | |
6751ebae | 22728 | cutu_reader reader (per_cu, NULL, 0, false); |
c0ab21c2 TT |
22729 | |
22730 | if (!reader.dummy_p) | |
22731 | { | |
22732 | struct dwarf2_cu *cu = reader.cu; | |
22733 | const gdb_byte *info_ptr = reader.info_ptr; | |
22734 | ||
22735 | gdb_assert (cu->die_hash == NULL); | |
22736 | cu->die_hash = | |
22737 | htab_create_alloc_ex (cu->header.length / 12, | |
22738 | die_hash, | |
22739 | die_eq, | |
22740 | NULL, | |
22741 | &cu->comp_unit_obstack, | |
22742 | hashtab_obstack_allocate, | |
22743 | dummy_obstack_deallocate); | |
22744 | ||
3e225074 | 22745 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
22746 | reader.comp_unit_die->child |
22747 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
22748 | reader.comp_unit_die); | |
22749 | cu->dies = reader.comp_unit_die; | |
22750 | /* comp_unit_die is not stored in die_hash, no need. */ | |
22751 | ||
22752 | /* We try not to read any attributes in this function, because | |
22753 | not all CUs needed for references have been loaded yet, and | |
22754 | symbol table processing isn't initialized. But we have to | |
22755 | set the CU language, or we won't be able to build types | |
22756 | correctly. Similarly, if we do not read the producer, we can | |
22757 | not apply producer-specific interpretation. */ | |
22758 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
6751ebae TT |
22759 | |
22760 | reader.keep (); | |
c0ab21c2 TT |
22761 | } |
22762 | ||
7ee85ab1 | 22763 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
22764 | } |
22765 | ||
c906108c SS |
22766 | /* Decode simple location descriptions. |
22767 | Given a pointer to a dwarf block that defines a location, compute | |
22768 | the location and return the value. | |
22769 | ||
4cecd739 DJ |
22770 | NOTE drow/2003-11-18: This function is called in two situations |
22771 | now: for the address of static or global variables (partial symbols | |
22772 | only) and for offsets into structures which are expected to be | |
22773 | (more or less) constant. The partial symbol case should go away, | |
22774 | and only the constant case should remain. That will let this | |
22775 | function complain more accurately. A few special modes are allowed | |
22776 | without complaint for global variables (for instance, global | |
22777 | register values and thread-local values). | |
c906108c SS |
22778 | |
22779 | A location description containing no operations indicates that the | |
4cecd739 | 22780 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
22781 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
22782 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
22783 | complaint. |
22784 | ||
22785 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
22786 | |
22787 | static CORE_ADDR | |
e7c27a73 | 22788 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 22789 | { |
518817b3 | 22790 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
56eb65bd SP |
22791 | size_t i; |
22792 | size_t size = blk->size; | |
d521ce57 | 22793 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
22794 | CORE_ADDR stack[64]; |
22795 | int stacki; | |
22796 | unsigned int bytes_read, unsnd; | |
22797 | gdb_byte op; | |
c906108c | 22798 | |
21ae7a4d JK |
22799 | i = 0; |
22800 | stacki = 0; | |
22801 | stack[stacki] = 0; | |
22802 | stack[++stacki] = 0; | |
22803 | ||
22804 | while (i < size) | |
22805 | { | |
22806 | op = data[i++]; | |
22807 | switch (op) | |
22808 | { | |
22809 | case DW_OP_lit0: | |
22810 | case DW_OP_lit1: | |
22811 | case DW_OP_lit2: | |
22812 | case DW_OP_lit3: | |
22813 | case DW_OP_lit4: | |
22814 | case DW_OP_lit5: | |
22815 | case DW_OP_lit6: | |
22816 | case DW_OP_lit7: | |
22817 | case DW_OP_lit8: | |
22818 | case DW_OP_lit9: | |
22819 | case DW_OP_lit10: | |
22820 | case DW_OP_lit11: | |
22821 | case DW_OP_lit12: | |
22822 | case DW_OP_lit13: | |
22823 | case DW_OP_lit14: | |
22824 | case DW_OP_lit15: | |
22825 | case DW_OP_lit16: | |
22826 | case DW_OP_lit17: | |
22827 | case DW_OP_lit18: | |
22828 | case DW_OP_lit19: | |
22829 | case DW_OP_lit20: | |
22830 | case DW_OP_lit21: | |
22831 | case DW_OP_lit22: | |
22832 | case DW_OP_lit23: | |
22833 | case DW_OP_lit24: | |
22834 | case DW_OP_lit25: | |
22835 | case DW_OP_lit26: | |
22836 | case DW_OP_lit27: | |
22837 | case DW_OP_lit28: | |
22838 | case DW_OP_lit29: | |
22839 | case DW_OP_lit30: | |
22840 | case DW_OP_lit31: | |
22841 | stack[++stacki] = op - DW_OP_lit0; | |
22842 | break; | |
f1bea926 | 22843 | |
21ae7a4d JK |
22844 | case DW_OP_reg0: |
22845 | case DW_OP_reg1: | |
22846 | case DW_OP_reg2: | |
22847 | case DW_OP_reg3: | |
22848 | case DW_OP_reg4: | |
22849 | case DW_OP_reg5: | |
22850 | case DW_OP_reg6: | |
22851 | case DW_OP_reg7: | |
22852 | case DW_OP_reg8: | |
22853 | case DW_OP_reg9: | |
22854 | case DW_OP_reg10: | |
22855 | case DW_OP_reg11: | |
22856 | case DW_OP_reg12: | |
22857 | case DW_OP_reg13: | |
22858 | case DW_OP_reg14: | |
22859 | case DW_OP_reg15: | |
22860 | case DW_OP_reg16: | |
22861 | case DW_OP_reg17: | |
22862 | case DW_OP_reg18: | |
22863 | case DW_OP_reg19: | |
22864 | case DW_OP_reg20: | |
22865 | case DW_OP_reg21: | |
22866 | case DW_OP_reg22: | |
22867 | case DW_OP_reg23: | |
22868 | case DW_OP_reg24: | |
22869 | case DW_OP_reg25: | |
22870 | case DW_OP_reg26: | |
22871 | case DW_OP_reg27: | |
22872 | case DW_OP_reg28: | |
22873 | case DW_OP_reg29: | |
22874 | case DW_OP_reg30: | |
22875 | case DW_OP_reg31: | |
22876 | stack[++stacki] = op - DW_OP_reg0; | |
22877 | if (i < size) | |
22878 | dwarf2_complex_location_expr_complaint (); | |
22879 | break; | |
c906108c | 22880 | |
21ae7a4d JK |
22881 | case DW_OP_regx: |
22882 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
22883 | i += bytes_read; | |
22884 | stack[++stacki] = unsnd; | |
22885 | if (i < size) | |
22886 | dwarf2_complex_location_expr_complaint (); | |
22887 | break; | |
c906108c | 22888 | |
21ae7a4d | 22889 | case DW_OP_addr: |
c8a7a66f TT |
22890 | stack[++stacki] = cu->header.read_address (objfile->obfd, &data[i], |
22891 | &bytes_read); | |
21ae7a4d JK |
22892 | i += bytes_read; |
22893 | break; | |
d53d4ac5 | 22894 | |
21ae7a4d JK |
22895 | case DW_OP_const1u: |
22896 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
22897 | i += 1; | |
22898 | break; | |
22899 | ||
22900 | case DW_OP_const1s: | |
22901 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
22902 | i += 1; | |
22903 | break; | |
22904 | ||
22905 | case DW_OP_const2u: | |
22906 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
22907 | i += 2; | |
22908 | break; | |
22909 | ||
22910 | case DW_OP_const2s: | |
22911 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
22912 | i += 2; | |
22913 | break; | |
d53d4ac5 | 22914 | |
21ae7a4d JK |
22915 | case DW_OP_const4u: |
22916 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
22917 | i += 4; | |
22918 | break; | |
22919 | ||
22920 | case DW_OP_const4s: | |
22921 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
22922 | i += 4; | |
22923 | break; | |
22924 | ||
585861ea JK |
22925 | case DW_OP_const8u: |
22926 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
22927 | i += 8; | |
22928 | break; | |
22929 | ||
21ae7a4d JK |
22930 | case DW_OP_constu: |
22931 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
22932 | &bytes_read); | |
22933 | i += bytes_read; | |
22934 | break; | |
22935 | ||
22936 | case DW_OP_consts: | |
22937 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
22938 | i += bytes_read; | |
22939 | break; | |
22940 | ||
22941 | case DW_OP_dup: | |
22942 | stack[stacki + 1] = stack[stacki]; | |
22943 | stacki++; | |
22944 | break; | |
22945 | ||
22946 | case DW_OP_plus: | |
22947 | stack[stacki - 1] += stack[stacki]; | |
22948 | stacki--; | |
22949 | break; | |
22950 | ||
22951 | case DW_OP_plus_uconst: | |
22952 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
22953 | &bytes_read); | |
22954 | i += bytes_read; | |
22955 | break; | |
22956 | ||
22957 | case DW_OP_minus: | |
22958 | stack[stacki - 1] -= stack[stacki]; | |
22959 | stacki--; | |
22960 | break; | |
22961 | ||
22962 | case DW_OP_deref: | |
22963 | /* If we're not the last op, then we definitely can't encode | |
22964 | this using GDB's address_class enum. This is valid for partial | |
22965 | global symbols, although the variable's address will be bogus | |
22966 | in the psymtab. */ | |
22967 | if (i < size) | |
22968 | dwarf2_complex_location_expr_complaint (); | |
22969 | break; | |
22970 | ||
22971 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 22972 | case DW_OP_form_tls_address: |
21ae7a4d JK |
22973 | /* The top of the stack has the offset from the beginning |
22974 | of the thread control block at which the variable is located. */ | |
22975 | /* Nothing should follow this operator, so the top of stack would | |
22976 | be returned. */ | |
22977 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
22978 | address will be bogus in the psymtab. Make it always at least |
22979 | non-zero to not look as a variable garbage collected by linker | |
22980 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
22981 | if (i < size) |
22982 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 22983 | stack[stacki]++; |
21ae7a4d JK |
22984 | break; |
22985 | ||
22986 | case DW_OP_GNU_uninit: | |
22987 | break; | |
22988 | ||
336d760d | 22989 | case DW_OP_addrx: |
3019eac3 | 22990 | case DW_OP_GNU_addr_index: |
49f6c839 | 22991 | case DW_OP_GNU_const_index: |
3019eac3 DE |
22992 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
22993 | &bytes_read); | |
22994 | i += bytes_read; | |
22995 | break; | |
22996 | ||
21ae7a4d JK |
22997 | default: |
22998 | { | |
f39c6ffd | 22999 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
23000 | |
23001 | if (name) | |
b98664d3 | 23002 | complaint (_("unsupported stack op: '%s'"), |
21ae7a4d JK |
23003 | name); |
23004 | else | |
b98664d3 | 23005 | complaint (_("unsupported stack op: '%02x'"), |
21ae7a4d JK |
23006 | op); |
23007 | } | |
23008 | ||
23009 | return (stack[stacki]); | |
d53d4ac5 | 23010 | } |
3c6e0cb3 | 23011 | |
21ae7a4d JK |
23012 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
23013 | outside of the allocated space. Also enforce minimum>0. */ | |
23014 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
23015 | { | |
b98664d3 | 23016 | complaint (_("location description stack overflow")); |
21ae7a4d JK |
23017 | return 0; |
23018 | } | |
23019 | ||
23020 | if (stacki <= 0) | |
23021 | { | |
b98664d3 | 23022 | complaint (_("location description stack underflow")); |
21ae7a4d JK |
23023 | return 0; |
23024 | } | |
23025 | } | |
23026 | return (stack[stacki]); | |
c906108c SS |
23027 | } |
23028 | ||
23029 | /* memory allocation interface */ | |
23030 | ||
c906108c | 23031 | static struct dwarf_block * |
7b5a2f43 | 23032 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 23033 | { |
8d749320 | 23034 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
23035 | } |
23036 | ||
c906108c | 23037 | static struct die_info * |
b60c80d6 | 23038 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
23039 | { |
23040 | struct die_info *die; | |
b60c80d6 DJ |
23041 | size_t size = sizeof (struct die_info); |
23042 | ||
23043 | if (num_attrs > 1) | |
23044 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 23045 | |
b60c80d6 | 23046 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
23047 | memset (die, 0, sizeof (struct die_info)); |
23048 | return (die); | |
23049 | } | |
2e276125 JB |
23050 | |
23051 | \f | |
23052 | /* Macro support. */ | |
23053 | ||
2e276125 | 23054 | static struct macro_source_file * |
804d2729 TT |
23055 | macro_start_file (struct dwarf2_cu *cu, |
23056 | int file, int line, | |
2e276125 | 23057 | struct macro_source_file *current_file, |
43f3e411 | 23058 | struct line_header *lh) |
2e276125 | 23059 | { |
233d95b5 | 23060 | /* File name relative to the compilation directory of this source file. */ |
03075812 | 23061 | gdb::unique_xmalloc_ptr<char> file_name = lh->file_file_name (file); |
2e276125 | 23062 | |
2e276125 | 23063 | if (! current_file) |
abc9d0dc | 23064 | { |
fc474241 DE |
23065 | /* Note: We don't create a macro table for this compilation unit |
23066 | at all until we actually get a filename. */ | |
c24bdb02 | 23067 | struct macro_table *macro_table = cu->get_builder ()->get_macro_table (); |
fc474241 | 23068 | |
abc9d0dc TT |
23069 | /* If we have no current file, then this must be the start_file |
23070 | directive for the compilation unit's main source file. */ | |
03075812 | 23071 | current_file = macro_set_main (macro_table, file_name.get ()); |
fc474241 | 23072 | macro_define_special (macro_table); |
abc9d0dc | 23073 | } |
2e276125 | 23074 | else |
03075812 | 23075 | current_file = macro_include (current_file, line, file_name.get ()); |
6e70227d | 23076 | |
2e276125 JB |
23077 | return current_file; |
23078 | } | |
23079 | ||
2e276125 JB |
23080 | static const char * |
23081 | consume_improper_spaces (const char *p, const char *body) | |
23082 | { | |
23083 | if (*p == ' ') | |
23084 | { | |
b98664d3 | 23085 | complaint (_("macro definition contains spaces " |
3e43a32a | 23086 | "in formal argument list:\n`%s'"), |
4d3c2250 | 23087 | body); |
2e276125 JB |
23088 | |
23089 | while (*p == ' ') | |
23090 | p++; | |
23091 | } | |
23092 | ||
23093 | return p; | |
23094 | } | |
23095 | ||
23096 | ||
23097 | static void | |
23098 | parse_macro_definition (struct macro_source_file *file, int line, | |
23099 | const char *body) | |
23100 | { | |
23101 | const char *p; | |
23102 | ||
23103 | /* The body string takes one of two forms. For object-like macro | |
23104 | definitions, it should be: | |
23105 | ||
23106 | <macro name> " " <definition> | |
23107 | ||
23108 | For function-like macro definitions, it should be: | |
23109 | ||
23110 | <macro name> "() " <definition> | |
23111 | or | |
23112 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
23113 | ||
23114 | Spaces may appear only where explicitly indicated, and in the | |
23115 | <definition>. | |
23116 | ||
23117 | The Dwarf 2 spec says that an object-like macro's name is always | |
23118 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 23119 | the space when the macro's definition is the empty string. |
2e276125 JB |
23120 | |
23121 | The Dwarf 2 spec says that there should be no spaces between the | |
23122 | formal arguments in a function-like macro's formal argument list, | |
23123 | but versions of GCC around March 2002 include spaces after the | |
23124 | commas. */ | |
23125 | ||
23126 | ||
23127 | /* Find the extent of the macro name. The macro name is terminated | |
23128 | by either a space or null character (for an object-like macro) or | |
23129 | an opening paren (for a function-like macro). */ | |
23130 | for (p = body; *p; p++) | |
23131 | if (*p == ' ' || *p == '(') | |
23132 | break; | |
23133 | ||
23134 | if (*p == ' ' || *p == '\0') | |
23135 | { | |
23136 | /* It's an object-like macro. */ | |
23137 | int name_len = p - body; | |
456e800a | 23138 | std::string name (body, name_len); |
2e276125 JB |
23139 | const char *replacement; |
23140 | ||
23141 | if (*p == ' ') | |
23142 | replacement = body + name_len + 1; | |
23143 | else | |
23144 | { | |
4d3c2250 | 23145 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23146 | replacement = body + name_len; |
23147 | } | |
6e70227d | 23148 | |
456e800a | 23149 | macro_define_object (file, line, name.c_str (), replacement); |
2e276125 JB |
23150 | } |
23151 | else if (*p == '(') | |
23152 | { | |
23153 | /* It's a function-like macro. */ | |
456e800a | 23154 | std::string name (body, p - body); |
2e276125 JB |
23155 | int argc = 0; |
23156 | int argv_size = 1; | |
8d749320 | 23157 | char **argv = XNEWVEC (char *, argv_size); |
2e276125 JB |
23158 | |
23159 | p++; | |
23160 | ||
23161 | p = consume_improper_spaces (p, body); | |
23162 | ||
23163 | /* Parse the formal argument list. */ | |
23164 | while (*p && *p != ')') | |
23165 | { | |
23166 | /* Find the extent of the current argument name. */ | |
23167 | const char *arg_start = p; | |
23168 | ||
23169 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
23170 | p++; | |
23171 | ||
23172 | if (! *p || p == arg_start) | |
4d3c2250 | 23173 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23174 | else |
23175 | { | |
23176 | /* Make sure argv has room for the new argument. */ | |
23177 | if (argc >= argv_size) | |
23178 | { | |
23179 | argv_size *= 2; | |
224c3ddb | 23180 | argv = XRESIZEVEC (char *, argv, argv_size); |
2e276125 JB |
23181 | } |
23182 | ||
3f8a7804 | 23183 | argv[argc++] = savestring (arg_start, p - arg_start); |
2e276125 JB |
23184 | } |
23185 | ||
23186 | p = consume_improper_spaces (p, body); | |
23187 | ||
23188 | /* Consume the comma, if present. */ | |
23189 | if (*p == ',') | |
23190 | { | |
23191 | p++; | |
23192 | ||
23193 | p = consume_improper_spaces (p, body); | |
23194 | } | |
23195 | } | |
23196 | ||
23197 | if (*p == ')') | |
23198 | { | |
23199 | p++; | |
23200 | ||
23201 | if (*p == ' ') | |
23202 | /* Perfectly formed definition, no complaints. */ | |
456e800a | 23203 | macro_define_function (file, line, name.c_str (), |
6e70227d | 23204 | argc, (const char **) argv, |
2e276125 JB |
23205 | p + 1); |
23206 | else if (*p == '\0') | |
23207 | { | |
23208 | /* Complain, but do define it. */ | |
4d3c2250 | 23209 | dwarf2_macro_malformed_definition_complaint (body); |
456e800a | 23210 | macro_define_function (file, line, name.c_str (), |
6e70227d | 23211 | argc, (const char **) argv, |
2e276125 JB |
23212 | p); |
23213 | } | |
23214 | else | |
23215 | /* Just complain. */ | |
4d3c2250 | 23216 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23217 | } |
23218 | else | |
23219 | /* Just complain. */ | |
4d3c2250 | 23220 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 23221 | |
2e276125 JB |
23222 | { |
23223 | int i; | |
23224 | ||
23225 | for (i = 0; i < argc; i++) | |
23226 | xfree (argv[i]); | |
23227 | } | |
23228 | xfree (argv); | |
23229 | } | |
23230 | else | |
4d3c2250 | 23231 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23232 | } |
23233 | ||
cf2c3c16 TT |
23234 | /* Skip some bytes from BYTES according to the form given in FORM. |
23235 | Returns the new pointer. */ | |
2e276125 | 23236 | |
d521ce57 TT |
23237 | static const gdb_byte * |
23238 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
23239 | enum dwarf_form form, |
23240 | unsigned int offset_size, | |
23241 | struct dwarf2_section_info *section) | |
2e276125 | 23242 | { |
cf2c3c16 | 23243 | unsigned int bytes_read; |
2e276125 | 23244 | |
cf2c3c16 | 23245 | switch (form) |
2e276125 | 23246 | { |
cf2c3c16 TT |
23247 | case DW_FORM_data1: |
23248 | case DW_FORM_flag: | |
23249 | ++bytes; | |
23250 | break; | |
23251 | ||
23252 | case DW_FORM_data2: | |
23253 | bytes += 2; | |
23254 | break; | |
23255 | ||
23256 | case DW_FORM_data4: | |
23257 | bytes += 4; | |
23258 | break; | |
23259 | ||
23260 | case DW_FORM_data8: | |
23261 | bytes += 8; | |
23262 | break; | |
23263 | ||
0224619f JK |
23264 | case DW_FORM_data16: |
23265 | bytes += 16; | |
23266 | break; | |
23267 | ||
cf2c3c16 TT |
23268 | case DW_FORM_string: |
23269 | read_direct_string (abfd, bytes, &bytes_read); | |
23270 | bytes += bytes_read; | |
23271 | break; | |
23272 | ||
23273 | case DW_FORM_sec_offset: | |
23274 | case DW_FORM_strp: | |
36586728 | 23275 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
23276 | bytes += offset_size; |
23277 | break; | |
23278 | ||
23279 | case DW_FORM_block: | |
23280 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
23281 | bytes += bytes_read; | |
23282 | break; | |
23283 | ||
23284 | case DW_FORM_block1: | |
23285 | bytes += 1 + read_1_byte (abfd, bytes); | |
23286 | break; | |
23287 | case DW_FORM_block2: | |
23288 | bytes += 2 + read_2_bytes (abfd, bytes); | |
23289 | break; | |
23290 | case DW_FORM_block4: | |
23291 | bytes += 4 + read_4_bytes (abfd, bytes); | |
23292 | break; | |
23293 | ||
336d760d | 23294 | case DW_FORM_addrx: |
cf2c3c16 | 23295 | case DW_FORM_sdata: |
cf532bd1 | 23296 | case DW_FORM_strx: |
cf2c3c16 | 23297 | case DW_FORM_udata: |
3019eac3 DE |
23298 | case DW_FORM_GNU_addr_index: |
23299 | case DW_FORM_GNU_str_index: | |
d521ce57 | 23300 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
23301 | if (bytes == NULL) |
23302 | { | |
23303 | dwarf2_section_buffer_overflow_complaint (section); | |
23304 | return NULL; | |
23305 | } | |
cf2c3c16 TT |
23306 | break; |
23307 | ||
663c44ac JK |
23308 | case DW_FORM_implicit_const: |
23309 | break; | |
23310 | ||
cf2c3c16 TT |
23311 | default: |
23312 | { | |
b98664d3 | 23313 | complaint (_("invalid form 0x%x in `%s'"), |
96b79293 | 23314 | form, section->get_name ()); |
cf2c3c16 TT |
23315 | return NULL; |
23316 | } | |
2e276125 JB |
23317 | } |
23318 | ||
cf2c3c16 TT |
23319 | return bytes; |
23320 | } | |
757a13d0 | 23321 | |
cf2c3c16 TT |
23322 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
23323 | opcode. Returns an updated pointer to the macro data buffer; or, | |
23324 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 23325 | |
d521ce57 | 23326 | static const gdb_byte * |
cf2c3c16 | 23327 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
23328 | const gdb_byte **opcode_definitions, |
23329 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
23330 | bfd *abfd, |
23331 | unsigned int offset_size, | |
23332 | struct dwarf2_section_info *section) | |
23333 | { | |
23334 | unsigned int bytes_read, i; | |
23335 | unsigned long arg; | |
d521ce57 | 23336 | const gdb_byte *defn; |
2e276125 | 23337 | |
cf2c3c16 | 23338 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 23339 | { |
b98664d3 | 23340 | complaint (_("unrecognized DW_MACFINO opcode 0x%x"), |
cf2c3c16 TT |
23341 | opcode); |
23342 | return NULL; | |
23343 | } | |
2e276125 | 23344 | |
cf2c3c16 TT |
23345 | defn = opcode_definitions[opcode]; |
23346 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
23347 | defn += bytes_read; | |
2e276125 | 23348 | |
cf2c3c16 TT |
23349 | for (i = 0; i < arg; ++i) |
23350 | { | |
aead7601 SM |
23351 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, |
23352 | (enum dwarf_form) defn[i], offset_size, | |
f664829e | 23353 | section); |
cf2c3c16 TT |
23354 | if (mac_ptr == NULL) |
23355 | { | |
23356 | /* skip_form_bytes already issued the complaint. */ | |
23357 | return NULL; | |
23358 | } | |
23359 | } | |
757a13d0 | 23360 | |
cf2c3c16 TT |
23361 | return mac_ptr; |
23362 | } | |
757a13d0 | 23363 | |
cf2c3c16 TT |
23364 | /* A helper function which parses the header of a macro section. |
23365 | If the macro section is the extended (for now called "GNU") type, | |
23366 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
23367 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 23368 | |
d521ce57 TT |
23369 | static const gdb_byte * |
23370 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 23371 | bfd *abfd, |
d521ce57 | 23372 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
23373 | unsigned int *offset_size, |
23374 | int section_is_gnu) | |
23375 | { | |
23376 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 23377 | |
cf2c3c16 TT |
23378 | if (section_is_gnu) |
23379 | { | |
23380 | unsigned int version, flags; | |
757a13d0 | 23381 | |
cf2c3c16 | 23382 | version = read_2_bytes (abfd, mac_ptr); |
0af92d60 | 23383 | if (version != 4 && version != 5) |
cf2c3c16 | 23384 | { |
b98664d3 | 23385 | complaint (_("unrecognized version `%d' in .debug_macro section"), |
cf2c3c16 TT |
23386 | version); |
23387 | return NULL; | |
23388 | } | |
23389 | mac_ptr += 2; | |
757a13d0 | 23390 | |
cf2c3c16 TT |
23391 | flags = read_1_byte (abfd, mac_ptr); |
23392 | ++mac_ptr; | |
23393 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 23394 | |
cf2c3c16 TT |
23395 | if ((flags & 2) != 0) |
23396 | /* We don't need the line table offset. */ | |
23397 | mac_ptr += *offset_size; | |
757a13d0 | 23398 | |
cf2c3c16 TT |
23399 | /* Vendor opcode descriptions. */ |
23400 | if ((flags & 4) != 0) | |
23401 | { | |
23402 | unsigned int i, count; | |
757a13d0 | 23403 | |
cf2c3c16 TT |
23404 | count = read_1_byte (abfd, mac_ptr); |
23405 | ++mac_ptr; | |
23406 | for (i = 0; i < count; ++i) | |
23407 | { | |
23408 | unsigned int opcode, bytes_read; | |
23409 | unsigned long arg; | |
23410 | ||
23411 | opcode = read_1_byte (abfd, mac_ptr); | |
23412 | ++mac_ptr; | |
23413 | opcode_definitions[opcode] = mac_ptr; | |
23414 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
23415 | mac_ptr += bytes_read; | |
23416 | mac_ptr += arg; | |
23417 | } | |
757a13d0 | 23418 | } |
cf2c3c16 | 23419 | } |
757a13d0 | 23420 | |
cf2c3c16 TT |
23421 | return mac_ptr; |
23422 | } | |
757a13d0 | 23423 | |
cf2c3c16 | 23424 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
0af92d60 | 23425 | including DW_MACRO_import. */ |
cf2c3c16 TT |
23426 | |
23427 | static void | |
804d2729 | 23428 | dwarf_decode_macro_bytes (struct dwarf2_cu *cu, |
ed2dc618 | 23429 | bfd *abfd, |
d521ce57 | 23430 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, |
cf2c3c16 | 23431 | struct macro_source_file *current_file, |
43f3e411 | 23432 | struct line_header *lh, |
cf2c3c16 | 23433 | struct dwarf2_section_info *section, |
36586728 | 23434 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 23435 | unsigned int offset_size, |
8fc3fc34 | 23436 | htab_t include_hash) |
cf2c3c16 | 23437 | { |
804d2729 TT |
23438 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23439 | = cu->per_cu->dwarf2_per_objfile; | |
4d663531 | 23440 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
23441 | enum dwarf_macro_record_type macinfo_type; |
23442 | int at_commandline; | |
d521ce57 | 23443 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 23444 | |
cf2c3c16 TT |
23445 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
23446 | &offset_size, section_is_gnu); | |
23447 | if (mac_ptr == NULL) | |
23448 | { | |
23449 | /* We already issued a complaint. */ | |
23450 | return; | |
23451 | } | |
757a13d0 JK |
23452 | |
23453 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
23454 | GDB is still reading the definitions from command line. First | |
23455 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
23456 | to create CURRENT_FILE for the main source holding also the command line | |
23457 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
23458 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
23459 | ||
23460 | at_commandline = 1; | |
23461 | ||
23462 | do | |
23463 | { | |
23464 | /* Do we at least have room for a macinfo type byte? */ | |
23465 | if (mac_ptr >= mac_end) | |
23466 | { | |
f664829e | 23467 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
23468 | break; |
23469 | } | |
23470 | ||
aead7601 | 23471 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
757a13d0 JK |
23472 | mac_ptr++; |
23473 | ||
cf2c3c16 TT |
23474 | /* Note that we rely on the fact that the corresponding GNU and |
23475 | DWARF constants are the same. */ | |
132448f8 SM |
23476 | DIAGNOSTIC_PUSH |
23477 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
757a13d0 JK |
23478 | switch (macinfo_type) |
23479 | { | |
23480 | /* A zero macinfo type indicates the end of the macro | |
23481 | information. */ | |
23482 | case 0: | |
23483 | break; | |
2e276125 | 23484 | |
0af92d60 JK |
23485 | case DW_MACRO_define: |
23486 | case DW_MACRO_undef: | |
23487 | case DW_MACRO_define_strp: | |
23488 | case DW_MACRO_undef_strp: | |
23489 | case DW_MACRO_define_sup: | |
23490 | case DW_MACRO_undef_sup: | |
2e276125 | 23491 | { |
891d2f0b | 23492 | unsigned int bytes_read; |
2e276125 | 23493 | int line; |
d521ce57 | 23494 | const char *body; |
cf2c3c16 | 23495 | int is_define; |
2e276125 | 23496 | |
cf2c3c16 TT |
23497 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
23498 | mac_ptr += bytes_read; | |
23499 | ||
0af92d60 JK |
23500 | if (macinfo_type == DW_MACRO_define |
23501 | || macinfo_type == DW_MACRO_undef) | |
cf2c3c16 TT |
23502 | { |
23503 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
23504 | mac_ptr += bytes_read; | |
23505 | } | |
23506 | else | |
23507 | { | |
23508 | LONGEST str_offset; | |
23509 | ||
24aa364d | 23510 | str_offset = read_offset (abfd, mac_ptr, offset_size); |
cf2c3c16 | 23511 | mac_ptr += offset_size; |
2e276125 | 23512 | |
0af92d60 JK |
23513 | if (macinfo_type == DW_MACRO_define_sup |
23514 | || macinfo_type == DW_MACRO_undef_sup | |
f7a35f02 | 23515 | || section_is_dwz) |
36586728 | 23516 | { |
ed2dc618 SM |
23517 | struct dwz_file *dwz |
23518 | = dwarf2_get_dwz_file (dwarf2_per_objfile); | |
36586728 | 23519 | |
ed2dc618 SM |
23520 | body = read_indirect_string_from_dwz (objfile, |
23521 | dwz, str_offset); | |
36586728 TT |
23522 | } |
23523 | else | |
ed2dc618 SM |
23524 | body = read_indirect_string_at_offset (dwarf2_per_objfile, |
23525 | abfd, str_offset); | |
cf2c3c16 TT |
23526 | } |
23527 | ||
0af92d60 JK |
23528 | is_define = (macinfo_type == DW_MACRO_define |
23529 | || macinfo_type == DW_MACRO_define_strp | |
23530 | || macinfo_type == DW_MACRO_define_sup); | |
2e276125 | 23531 | if (! current_file) |
757a13d0 JK |
23532 | { |
23533 | /* DWARF violation as no main source is present. */ | |
b98664d3 | 23534 | complaint (_("debug info with no main source gives macro %s " |
757a13d0 | 23535 | "on line %d: %s"), |
cf2c3c16 TT |
23536 | is_define ? _("definition") : _("undefinition"), |
23537 | line, body); | |
757a13d0 JK |
23538 | break; |
23539 | } | |
3e43a32a MS |
23540 | if ((line == 0 && !at_commandline) |
23541 | || (line != 0 && at_commandline)) | |
b98664d3 | 23542 | complaint (_("debug info gives %s macro %s with %s line %d: %s"), |
757a13d0 | 23543 | at_commandline ? _("command-line") : _("in-file"), |
cf2c3c16 | 23544 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
23545 | line == 0 ? _("zero") : _("non-zero"), line, body); |
23546 | ||
955b06fa | 23547 | if (body == NULL) |
7bede828 | 23548 | { |
955b06fa SDJ |
23549 | /* Fedora's rpm-build's "debugedit" binary |
23550 | corrupted .debug_macro sections. | |
23551 | ||
23552 | For more info, see | |
23553 | https://bugzilla.redhat.com/show_bug.cgi?id=1708786 */ | |
23554 | complaint (_("debug info gives %s invalid macro %s " | |
23555 | "without body (corrupted?) at line %d " | |
23556 | "on file %s"), | |
23557 | at_commandline ? _("command-line") : _("in-file"), | |
23558 | is_define ? _("definition") : _("undefinition"), | |
23559 | line, current_file->filename); | |
7bede828 | 23560 | } |
955b06fa SDJ |
23561 | else if (is_define) |
23562 | parse_macro_definition (current_file, line, body); | |
cf2c3c16 TT |
23563 | else |
23564 | { | |
0af92d60 JK |
23565 | gdb_assert (macinfo_type == DW_MACRO_undef |
23566 | || macinfo_type == DW_MACRO_undef_strp | |
23567 | || macinfo_type == DW_MACRO_undef_sup); | |
cf2c3c16 TT |
23568 | macro_undef (current_file, line, body); |
23569 | } | |
2e276125 JB |
23570 | } |
23571 | break; | |
23572 | ||
0af92d60 | 23573 | case DW_MACRO_start_file: |
2e276125 | 23574 | { |
891d2f0b | 23575 | unsigned int bytes_read; |
2e276125 JB |
23576 | int line, file; |
23577 | ||
23578 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
23579 | mac_ptr += bytes_read; | |
23580 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
23581 | mac_ptr += bytes_read; | |
23582 | ||
3e43a32a MS |
23583 | if ((line == 0 && !at_commandline) |
23584 | || (line != 0 && at_commandline)) | |
b98664d3 | 23585 | complaint (_("debug info gives source %d included " |
757a13d0 JK |
23586 | "from %s at %s line %d"), |
23587 | file, at_commandline ? _("command-line") : _("file"), | |
23588 | line == 0 ? _("zero") : _("non-zero"), line); | |
23589 | ||
23590 | if (at_commandline) | |
23591 | { | |
0af92d60 | 23592 | /* This DW_MACRO_start_file was executed in the |
cf2c3c16 | 23593 | pass one. */ |
757a13d0 JK |
23594 | at_commandline = 0; |
23595 | } | |
23596 | else | |
804d2729 TT |
23597 | current_file = macro_start_file (cu, file, line, current_file, |
23598 | lh); | |
2e276125 JB |
23599 | } |
23600 | break; | |
23601 | ||
0af92d60 | 23602 | case DW_MACRO_end_file: |
2e276125 | 23603 | if (! current_file) |
b98664d3 | 23604 | complaint (_("macro debug info has an unmatched " |
3e43a32a | 23605 | "`close_file' directive")); |
2e276125 JB |
23606 | else |
23607 | { | |
23608 | current_file = current_file->included_by; | |
23609 | if (! current_file) | |
23610 | { | |
cf2c3c16 | 23611 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
23612 | |
23613 | /* GCC circa March 2002 doesn't produce the zero | |
23614 | type byte marking the end of the compilation | |
23615 | unit. Complain if it's not there, but exit no | |
23616 | matter what. */ | |
23617 | ||
23618 | /* Do we at least have room for a macinfo type byte? */ | |
23619 | if (mac_ptr >= mac_end) | |
23620 | { | |
f664829e | 23621 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
23622 | return; |
23623 | } | |
23624 | ||
23625 | /* We don't increment mac_ptr here, so this is just | |
23626 | a look-ahead. */ | |
aead7601 SM |
23627 | next_type |
23628 | = (enum dwarf_macro_record_type) read_1_byte (abfd, | |
23629 | mac_ptr); | |
2e276125 | 23630 | if (next_type != 0) |
b98664d3 | 23631 | complaint (_("no terminating 0-type entry for " |
3e43a32a | 23632 | "macros in `.debug_macinfo' section")); |
2e276125 JB |
23633 | |
23634 | return; | |
23635 | } | |
23636 | } | |
23637 | break; | |
23638 | ||
0af92d60 JK |
23639 | case DW_MACRO_import: |
23640 | case DW_MACRO_import_sup: | |
cf2c3c16 TT |
23641 | { |
23642 | LONGEST offset; | |
8fc3fc34 | 23643 | void **slot; |
a036ba48 TT |
23644 | bfd *include_bfd = abfd; |
23645 | struct dwarf2_section_info *include_section = section; | |
d521ce57 | 23646 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 23647 | int is_dwz = section_is_dwz; |
d521ce57 | 23648 | const gdb_byte *new_mac_ptr; |
cf2c3c16 | 23649 | |
24aa364d | 23650 | offset = read_offset (abfd, mac_ptr, offset_size); |
cf2c3c16 TT |
23651 | mac_ptr += offset_size; |
23652 | ||
0af92d60 | 23653 | if (macinfo_type == DW_MACRO_import_sup) |
a036ba48 | 23654 | { |
ed2dc618 | 23655 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
a036ba48 | 23656 | |
96b79293 | 23657 | dwz->macro.read (objfile); |
a036ba48 | 23658 | |
a036ba48 | 23659 | include_section = &dwz->macro; |
96b79293 | 23660 | include_bfd = include_section->get_bfd_owner (); |
a036ba48 TT |
23661 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
23662 | is_dwz = 1; | |
23663 | } | |
23664 | ||
23665 | new_mac_ptr = include_section->buffer + offset; | |
23666 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
23667 | ||
8fc3fc34 TT |
23668 | if (*slot != NULL) |
23669 | { | |
23670 | /* This has actually happened; see | |
23671 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
b98664d3 | 23672 | complaint (_("recursive DW_MACRO_import in " |
8fc3fc34 TT |
23673 | ".debug_macro section")); |
23674 | } | |
23675 | else | |
23676 | { | |
d521ce57 | 23677 | *slot = (void *) new_mac_ptr; |
36586728 | 23678 | |
804d2729 | 23679 | dwarf_decode_macro_bytes (cu, include_bfd, new_mac_ptr, |
43f3e411 | 23680 | include_mac_end, current_file, lh, |
36586728 | 23681 | section, section_is_gnu, is_dwz, |
4d663531 | 23682 | offset_size, include_hash); |
8fc3fc34 | 23683 | |
d521ce57 | 23684 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 23685 | } |
cf2c3c16 TT |
23686 | } |
23687 | break; | |
23688 | ||
2e276125 | 23689 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
23690 | if (!section_is_gnu) |
23691 | { | |
23692 | unsigned int bytes_read; | |
2e276125 | 23693 | |
ac298888 TT |
23694 | /* This reads the constant, but since we don't recognize |
23695 | any vendor extensions, we ignore it. */ | |
23696 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
cf2c3c16 TT |
23697 | mac_ptr += bytes_read; |
23698 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
23699 | mac_ptr += bytes_read; | |
2e276125 | 23700 | |
cf2c3c16 TT |
23701 | /* We don't recognize any vendor extensions. */ |
23702 | break; | |
23703 | } | |
23704 | /* FALLTHROUGH */ | |
23705 | ||
23706 | default: | |
23707 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 23708 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
23709 | section); |
23710 | if (mac_ptr == NULL) | |
23711 | return; | |
23712 | break; | |
2e276125 | 23713 | } |
132448f8 | 23714 | DIAGNOSTIC_POP |
757a13d0 | 23715 | } while (macinfo_type != 0); |
2e276125 | 23716 | } |
8e19ed76 | 23717 | |
cf2c3c16 | 23718 | static void |
09262596 | 23719 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
43f3e411 | 23720 | int section_is_gnu) |
cf2c3c16 | 23721 | { |
518817b3 SM |
23722 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23723 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 23724 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
23725 | struct line_header *lh = cu->line_header; |
23726 | bfd *abfd; | |
d521ce57 | 23727 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
23728 | struct macro_source_file *current_file = 0; |
23729 | enum dwarf_macro_record_type macinfo_type; | |
23730 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 23731 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 | 23732 | void **slot; |
09262596 DE |
23733 | struct dwarf2_section_info *section; |
23734 | const char *section_name; | |
23735 | ||
23736 | if (cu->dwo_unit != NULL) | |
23737 | { | |
23738 | if (section_is_gnu) | |
23739 | { | |
23740 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
23741 | section_name = ".debug_macro.dwo"; | |
23742 | } | |
23743 | else | |
23744 | { | |
23745 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
23746 | section_name = ".debug_macinfo.dwo"; | |
23747 | } | |
23748 | } | |
23749 | else | |
23750 | { | |
23751 | if (section_is_gnu) | |
23752 | { | |
23753 | section = &dwarf2_per_objfile->macro; | |
23754 | section_name = ".debug_macro"; | |
23755 | } | |
23756 | else | |
23757 | { | |
23758 | section = &dwarf2_per_objfile->macinfo; | |
23759 | section_name = ".debug_macinfo"; | |
23760 | } | |
23761 | } | |
cf2c3c16 | 23762 | |
96b79293 | 23763 | section->read (objfile); |
cf2c3c16 TT |
23764 | if (section->buffer == NULL) |
23765 | { | |
b98664d3 | 23766 | complaint (_("missing %s section"), section_name); |
cf2c3c16 TT |
23767 | return; |
23768 | } | |
96b79293 | 23769 | abfd = section->get_bfd_owner (); |
cf2c3c16 TT |
23770 | |
23771 | /* First pass: Find the name of the base filename. | |
23772 | This filename is needed in order to process all macros whose definition | |
23773 | (or undefinition) comes from the command line. These macros are defined | |
23774 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
23775 | associated to the base file. | |
23776 | ||
23777 | To determine the base file name, we scan the macro definitions until we | |
23778 | reach the first DW_MACINFO_start_file entry. We then initialize | |
23779 | CURRENT_FILE accordingly so that any macro definition found before the | |
23780 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
23781 | ||
23782 | mac_ptr = section->buffer + offset; | |
23783 | mac_end = section->buffer + section->size; | |
23784 | ||
23785 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
23786 | &offset_size, section_is_gnu); | |
23787 | if (mac_ptr == NULL) | |
23788 | { | |
23789 | /* We already issued a complaint. */ | |
23790 | return; | |
23791 | } | |
23792 | ||
23793 | do | |
23794 | { | |
23795 | /* Do we at least have room for a macinfo type byte? */ | |
23796 | if (mac_ptr >= mac_end) | |
23797 | { | |
23798 | /* Complaint is printed during the second pass as GDB will probably | |
23799 | stop the first pass earlier upon finding | |
23800 | DW_MACINFO_start_file. */ | |
23801 | break; | |
23802 | } | |
23803 | ||
aead7601 | 23804 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
cf2c3c16 TT |
23805 | mac_ptr++; |
23806 | ||
23807 | /* Note that we rely on the fact that the corresponding GNU and | |
23808 | DWARF constants are the same. */ | |
132448f8 SM |
23809 | DIAGNOSTIC_PUSH |
23810 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
cf2c3c16 TT |
23811 | switch (macinfo_type) |
23812 | { | |
23813 | /* A zero macinfo type indicates the end of the macro | |
23814 | information. */ | |
23815 | case 0: | |
23816 | break; | |
23817 | ||
0af92d60 JK |
23818 | case DW_MACRO_define: |
23819 | case DW_MACRO_undef: | |
cf2c3c16 TT |
23820 | /* Only skip the data by MAC_PTR. */ |
23821 | { | |
23822 | unsigned int bytes_read; | |
23823 | ||
23824 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
23825 | mac_ptr += bytes_read; | |
23826 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
23827 | mac_ptr += bytes_read; | |
23828 | } | |
23829 | break; | |
23830 | ||
0af92d60 | 23831 | case DW_MACRO_start_file: |
cf2c3c16 TT |
23832 | { |
23833 | unsigned int bytes_read; | |
23834 | int line, file; | |
23835 | ||
23836 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
23837 | mac_ptr += bytes_read; | |
23838 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
23839 | mac_ptr += bytes_read; | |
23840 | ||
804d2729 | 23841 | current_file = macro_start_file (cu, file, line, current_file, lh); |
cf2c3c16 TT |
23842 | } |
23843 | break; | |
23844 | ||
0af92d60 | 23845 | case DW_MACRO_end_file: |
cf2c3c16 TT |
23846 | /* No data to skip by MAC_PTR. */ |
23847 | break; | |
23848 | ||
0af92d60 JK |
23849 | case DW_MACRO_define_strp: |
23850 | case DW_MACRO_undef_strp: | |
23851 | case DW_MACRO_define_sup: | |
23852 | case DW_MACRO_undef_sup: | |
cf2c3c16 TT |
23853 | { |
23854 | unsigned int bytes_read; | |
23855 | ||
23856 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
23857 | mac_ptr += bytes_read; | |
23858 | mac_ptr += offset_size; | |
23859 | } | |
23860 | break; | |
23861 | ||
0af92d60 JK |
23862 | case DW_MACRO_import: |
23863 | case DW_MACRO_import_sup: | |
cf2c3c16 | 23864 | /* Note that, according to the spec, a transparent include |
0af92d60 | 23865 | chain cannot call DW_MACRO_start_file. So, we can just |
cf2c3c16 TT |
23866 | skip this opcode. */ |
23867 | mac_ptr += offset_size; | |
23868 | break; | |
23869 | ||
23870 | case DW_MACINFO_vendor_ext: | |
23871 | /* Only skip the data by MAC_PTR. */ | |
23872 | if (!section_is_gnu) | |
23873 | { | |
23874 | unsigned int bytes_read; | |
23875 | ||
23876 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
23877 | mac_ptr += bytes_read; | |
23878 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
23879 | mac_ptr += bytes_read; | |
23880 | } | |
23881 | /* FALLTHROUGH */ | |
23882 | ||
23883 | default: | |
23884 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 23885 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
23886 | section); |
23887 | if (mac_ptr == NULL) | |
23888 | return; | |
23889 | break; | |
23890 | } | |
132448f8 | 23891 | DIAGNOSTIC_POP |
cf2c3c16 TT |
23892 | } while (macinfo_type != 0 && current_file == NULL); |
23893 | ||
23894 | /* Second pass: Process all entries. | |
23895 | ||
23896 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
23897 | command-line macro definitions/undefinitions. This flag is unset when we | |
23898 | reach the first DW_MACINFO_start_file entry. */ | |
23899 | ||
fc4007c9 TT |
23900 | htab_up include_hash (htab_create_alloc (1, htab_hash_pointer, |
23901 | htab_eq_pointer, | |
23902 | NULL, xcalloc, xfree)); | |
8fc3fc34 | 23903 | mac_ptr = section->buffer + offset; |
fc4007c9 | 23904 | slot = htab_find_slot (include_hash.get (), mac_ptr, INSERT); |
d521ce57 | 23905 | *slot = (void *) mac_ptr; |
804d2729 | 23906 | dwarf_decode_macro_bytes (cu, abfd, mac_ptr, mac_end, |
43f3e411 | 23907 | current_file, lh, section, |
fc4007c9 TT |
23908 | section_is_gnu, 0, offset_size, |
23909 | include_hash.get ()); | |
cf2c3c16 TT |
23910 | } |
23911 | ||
3019eac3 DE |
23912 | /* Return the .debug_loc section to use for CU. |
23913 | For DWO files use .debug_loc.dwo. */ | |
23914 | ||
23915 | static struct dwarf2_section_info * | |
23916 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
23917 | { | |
518817b3 SM |
23918 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23919 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 23920 | |
3019eac3 | 23921 | if (cu->dwo_unit) |
43988095 JK |
23922 | { |
23923 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 23924 | |
43988095 JK |
23925 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
23926 | } | |
23927 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->loclists | |
23928 | : &dwarf2_per_objfile->loc); | |
3019eac3 DE |
23929 | } |
23930 | ||
8cf6f0b1 TT |
23931 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
23932 | ||
23933 | static void | |
23934 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
23935 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 23936 | const struct attribute *attr) |
8cf6f0b1 | 23937 | { |
518817b3 SM |
23938 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23939 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 DE |
23940 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
23941 | ||
96b79293 | 23942 | section->read (dwarf2_per_objfile->objfile); |
8cf6f0b1 TT |
23943 | |
23944 | baton->per_cu = cu->per_cu; | |
23945 | gdb_assert (baton->per_cu); | |
23946 | /* We don't know how long the location list is, but make sure we | |
23947 | don't run off the edge of the section. */ | |
3019eac3 DE |
23948 | baton->size = section->size - DW_UNSND (attr); |
23949 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 23950 | baton->base_address = cu->base_address; |
f664829e | 23951 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
23952 | } |
23953 | ||
4c2df51b | 23954 | static void |
ff39bb5e | 23955 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 23956 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 23957 | { |
518817b3 SM |
23958 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23959 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 23960 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 23961 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 23962 | |
cd6c91b4 | 23963 | if (attr->form_is_section_offset () |
3019eac3 | 23964 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
23965 | the section. If so, fall through to the complaint in the |
23966 | other branch. */ | |
2c7d5afc | 23967 | && DW_UNSND (attr) < section->get_size (objfile)) |
4c2df51b | 23968 | { |
0d53c4c4 | 23969 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 23970 | |
8d749320 | 23971 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 23972 | |
8cf6f0b1 | 23973 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 23974 | |
d00adf39 | 23975 | if (cu->base_known == 0) |
b98664d3 | 23976 | complaint (_("Location list used without " |
3e43a32a | 23977 | "specifying the CU base address.")); |
4c2df51b | 23978 | |
f1e6e072 TT |
23979 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
23980 | ? dwarf2_loclist_block_index | |
23981 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
23982 | SYMBOL_LOCATION_BATON (sym) = baton; |
23983 | } | |
23984 | else | |
23985 | { | |
23986 | struct dwarf2_locexpr_baton *baton; | |
23987 | ||
8d749320 | 23988 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
ae0d2f24 UW |
23989 | baton->per_cu = cu->per_cu; |
23990 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 23991 | |
4fc6c0d5 | 23992 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
23993 | { |
23994 | /* Note that we're just copying the block's data pointer | |
23995 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
23996 | info_buffer for SYM's objfile; right now we never release |
23997 | that buffer, but when we do clean up properly this may | |
23998 | need to change. */ | |
0d53c4c4 DJ |
23999 | baton->size = DW_BLOCK (attr)->size; |
24000 | baton->data = DW_BLOCK (attr)->data; | |
24001 | } | |
24002 | else | |
24003 | { | |
24004 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 24005 | sym->natural_name ()); |
0d53c4c4 | 24006 | baton->size = 0; |
0d53c4c4 | 24007 | } |
6e70227d | 24008 | |
f1e6e072 TT |
24009 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24010 | ? dwarf2_locexpr_block_index | |
24011 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
24012 | SYMBOL_LOCATION_BATON (sym) = baton; |
24013 | } | |
4c2df51b | 24014 | } |
6502dd73 | 24015 | |
09ba997f | 24016 | /* See read.h. */ |
ae0d2f24 UW |
24017 | |
24018 | struct objfile * | |
09ba997f | 24019 | dwarf2_per_cu_data::objfile () const |
ae0d2f24 | 24020 | { |
09ba997f | 24021 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
ae0d2f24 UW |
24022 | |
24023 | /* Return the master objfile, so that we can report and look up the | |
24024 | correct file containing this variable. */ | |
24025 | if (objfile->separate_debug_objfile_backlink) | |
24026 | objfile = objfile->separate_debug_objfile_backlink; | |
24027 | ||
24028 | return objfile; | |
24029 | } | |
24030 | ||
96408a79 SA |
24031 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
24032 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
24033 | CU_HEADERP first. */ | |
24034 | ||
24035 | static const struct comp_unit_head * | |
24036 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
09ba997f | 24037 | const struct dwarf2_per_cu_data *per_cu) |
96408a79 | 24038 | { |
d521ce57 | 24039 | const gdb_byte *info_ptr; |
96408a79 SA |
24040 | |
24041 | if (per_cu->cu) | |
24042 | return &per_cu->cu->header; | |
24043 | ||
9c541725 | 24044 | info_ptr = per_cu->section->buffer + to_underlying (per_cu->sect_off); |
96408a79 SA |
24045 | |
24046 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
24047 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
24048 | rcuh_kind::COMPILE); | |
96408a79 SA |
24049 | |
24050 | return cu_headerp; | |
24051 | } | |
24052 | ||
09ba997f | 24053 | /* See read.h. */ |
ae0d2f24 | 24054 | |
98714339 | 24055 | int |
09ba997f | 24056 | dwarf2_per_cu_data::addr_size () const |
ae0d2f24 | 24057 | { |
96408a79 SA |
24058 | struct comp_unit_head cu_header_local; |
24059 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 24060 | |
09ba997f | 24061 | cu_headerp = per_cu_header_read_in (&cu_header_local, this); |
96408a79 SA |
24062 | |
24063 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
24064 | } |
24065 | ||
09ba997f | 24066 | /* See read.h. */ |
9eae7c52 TT |
24067 | |
24068 | int | |
09ba997f | 24069 | dwarf2_per_cu_data::offset_size () const |
9eae7c52 | 24070 | { |
96408a79 SA |
24071 | struct comp_unit_head cu_header_local; |
24072 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 24073 | |
09ba997f | 24074 | cu_headerp = per_cu_header_read_in (&cu_header_local, this); |
96408a79 SA |
24075 | |
24076 | return cu_headerp->offset_size; | |
24077 | } | |
24078 | ||
09ba997f | 24079 | /* See read.h. */ |
96408a79 SA |
24080 | |
24081 | int | |
09ba997f | 24082 | dwarf2_per_cu_data::ref_addr_size () const |
96408a79 SA |
24083 | { |
24084 | struct comp_unit_head cu_header_local; | |
24085 | const struct comp_unit_head *cu_headerp; | |
24086 | ||
09ba997f | 24087 | cu_headerp = per_cu_header_read_in (&cu_header_local, this); |
96408a79 SA |
24088 | |
24089 | if (cu_headerp->version == 2) | |
24090 | return cu_headerp->addr_size; | |
24091 | else | |
24092 | return cu_headerp->offset_size; | |
181cebd4 JK |
24093 | } |
24094 | ||
09ba997f | 24095 | /* See read.h. */ |
9aa1f1e3 TT |
24096 | |
24097 | CORE_ADDR | |
09ba997f | 24098 | dwarf2_per_cu_data::text_offset () const |
9aa1f1e3 | 24099 | { |
09ba997f TT |
24100 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
24101 | ||
24102 | return objfile->text_section_offset (); | |
9aa1f1e3 TT |
24103 | } |
24104 | ||
09ba997f TT |
24105 | /* See read.h. */ |
24106 | ||
24107 | struct type * | |
24108 | dwarf2_per_cu_data::addr_type () const | |
9a49df9d | 24109 | { |
09ba997f | 24110 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
9a49df9d AB |
24111 | struct type *void_type = objfile_type (objfile)->builtin_void; |
24112 | struct type *addr_type = lookup_pointer_type (void_type); | |
09ba997f | 24113 | int addr_size = this->addr_size (); |
9a49df9d AB |
24114 | |
24115 | if (TYPE_LENGTH (addr_type) == addr_size) | |
24116 | return addr_type; | |
24117 | ||
09ba997f | 24118 | addr_type = addr_sized_int_type (TYPE_UNSIGNED (addr_type)); |
9a49df9d AB |
24119 | return addr_type; |
24120 | } | |
24121 | ||
22b6cd70 TT |
24122 | /* A helper function for dwarf2_find_containing_comp_unit that returns |
24123 | the index of the result, and that searches a vector. It will | |
24124 | return a result even if the offset in question does not actually | |
24125 | occur in any CU. This is separate so that it can be unit | |
24126 | tested. */ | |
ae038cb0 | 24127 | |
22b6cd70 TT |
24128 | static int |
24129 | dwarf2_find_containing_comp_unit | |
24130 | (sect_offset sect_off, | |
24131 | unsigned int offset_in_dwz, | |
24132 | const std::vector<dwarf2_per_cu_data *> &all_comp_units) | |
ae038cb0 | 24133 | { |
ae038cb0 DJ |
24134 | int low, high; |
24135 | ||
ae038cb0 | 24136 | low = 0; |
22b6cd70 | 24137 | high = all_comp_units.size () - 1; |
ae038cb0 DJ |
24138 | while (high > low) |
24139 | { | |
36586728 | 24140 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 24141 | int mid = low + (high - low) / 2; |
9a619af0 | 24142 | |
22b6cd70 | 24143 | mid_cu = all_comp_units[mid]; |
36586728 | 24144 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 24145 | || (mid_cu->is_dwz == offset_in_dwz |
22b6cd70 | 24146 | && mid_cu->sect_off + mid_cu->length > sect_off)) |
ae038cb0 DJ |
24147 | high = mid; |
24148 | else | |
24149 | low = mid + 1; | |
24150 | } | |
24151 | gdb_assert (low == high); | |
22b6cd70 TT |
24152 | return low; |
24153 | } | |
24154 | ||
24155 | /* Locate the .debug_info compilation unit from CU's objfile which contains | |
24156 | the DIE at OFFSET. Raises an error on failure. */ | |
24157 | ||
24158 | static struct dwarf2_per_cu_data * | |
24159 | dwarf2_find_containing_comp_unit (sect_offset sect_off, | |
24160 | unsigned int offset_in_dwz, | |
24161 | struct dwarf2_per_objfile *dwarf2_per_objfile) | |
24162 | { | |
24163 | int low | |
24164 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
24165 | dwarf2_per_objfile->all_comp_units); | |
24166 | struct dwarf2_per_cu_data *this_cu | |
24167 | = dwarf2_per_objfile->all_comp_units[low]; | |
24168 | ||
45b8ae0c | 24169 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 24170 | { |
36586728 | 24171 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 24172 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
24173 | "offset %s [in module %s]"), |
24174 | sect_offset_str (sect_off), | |
ed2dc618 | 24175 | bfd_get_filename (dwarf2_per_objfile->objfile->obfd)); |
10b3939b | 24176 | |
9c541725 PA |
24177 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->sect_off |
24178 | <= sect_off); | |
ae038cb0 DJ |
24179 | return dwarf2_per_objfile->all_comp_units[low-1]; |
24180 | } | |
24181 | else | |
24182 | { | |
b76e467d | 24183 | if (low == dwarf2_per_objfile->all_comp_units.size () - 1 |
9c541725 | 24184 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 24185 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 24186 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
24187 | return this_cu; |
24188 | } | |
24189 | } | |
24190 | ||
22b6cd70 TT |
24191 | #if GDB_SELF_TEST |
24192 | ||
24193 | namespace selftests { | |
24194 | namespace find_containing_comp_unit { | |
24195 | ||
24196 | static void | |
24197 | run_test () | |
24198 | { | |
24199 | struct dwarf2_per_cu_data one {}; | |
24200 | struct dwarf2_per_cu_data two {}; | |
24201 | struct dwarf2_per_cu_data three {}; | |
24202 | struct dwarf2_per_cu_data four {}; | |
24203 | ||
24204 | one.length = 5; | |
24205 | two.sect_off = sect_offset (one.length); | |
24206 | two.length = 7; | |
24207 | ||
24208 | three.length = 5; | |
24209 | three.is_dwz = 1; | |
24210 | four.sect_off = sect_offset (three.length); | |
24211 | four.length = 7; | |
24212 | four.is_dwz = 1; | |
24213 | ||
24214 | std::vector<dwarf2_per_cu_data *> units; | |
24215 | units.push_back (&one); | |
24216 | units.push_back (&two); | |
24217 | units.push_back (&three); | |
24218 | units.push_back (&four); | |
24219 | ||
24220 | int result; | |
24221 | ||
24222 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 0, units); | |
24223 | SELF_CHECK (units[result] == &one); | |
24224 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 0, units); | |
24225 | SELF_CHECK (units[result] == &one); | |
24226 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 0, units); | |
24227 | SELF_CHECK (units[result] == &two); | |
24228 | ||
24229 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 1, units); | |
24230 | SELF_CHECK (units[result] == &three); | |
24231 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 1, units); | |
24232 | SELF_CHECK (units[result] == &three); | |
24233 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 1, units); | |
24234 | SELF_CHECK (units[result] == &four); | |
24235 | } | |
24236 | ||
24237 | } | |
24238 | } | |
24239 | ||
24240 | #endif /* GDB_SELF_TEST */ | |
24241 | ||
23745b47 | 24242 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 24243 | |
fcd3b13d SM |
24244 | dwarf2_cu::dwarf2_cu (struct dwarf2_per_cu_data *per_cu_) |
24245 | : per_cu (per_cu_), | |
9068261f AB |
24246 | mark (false), |
24247 | has_loclist (false), | |
24248 | checked_producer (false), | |
24249 | producer_is_gxx_lt_4_6 (false), | |
24250 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 24251 | producer_is_icc (false), |
9068261f | 24252 | producer_is_icc_lt_14 (false), |
c258c396 | 24253 | producer_is_codewarrior (false), |
9068261f | 24254 | processing_has_namespace_info (false) |
93311388 | 24255 | { |
fcd3b13d SM |
24256 | per_cu->cu = this; |
24257 | } | |
24258 | ||
24259 | /* Destroy a dwarf2_cu. */ | |
24260 | ||
24261 | dwarf2_cu::~dwarf2_cu () | |
24262 | { | |
24263 | per_cu->cu = NULL; | |
9816fde3 JK |
24264 | } |
24265 | ||
24266 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
24267 | ||
24268 | static void | |
95554aad TT |
24269 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
24270 | enum language pretend_language) | |
9816fde3 JK |
24271 | { |
24272 | struct attribute *attr; | |
24273 | ||
24274 | /* Set the language we're debugging. */ | |
24275 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 24276 | if (attr != nullptr) |
9816fde3 JK |
24277 | set_cu_language (DW_UNSND (attr), cu); |
24278 | else | |
9cded63f | 24279 | { |
95554aad | 24280 | cu->language = pretend_language; |
9cded63f TT |
24281 | cu->language_defn = language_def (cu->language); |
24282 | } | |
dee91e82 | 24283 | |
7d45c7c3 | 24284 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
24285 | } |
24286 | ||
ae038cb0 DJ |
24287 | /* Increase the age counter on each cached compilation unit, and free |
24288 | any that are too old. */ | |
24289 | ||
24290 | static void | |
ed2dc618 | 24291 | age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
24292 | { |
24293 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
24294 | ||
24295 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
24296 | per_cu = dwarf2_per_objfile->read_in_chain; | |
24297 | while (per_cu != NULL) | |
24298 | { | |
24299 | per_cu->cu->last_used ++; | |
b4f54984 | 24300 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
24301 | dwarf2_mark (per_cu->cu); |
24302 | per_cu = per_cu->cu->read_in_chain; | |
24303 | } | |
24304 | ||
24305 | per_cu = dwarf2_per_objfile->read_in_chain; | |
24306 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
24307 | while (per_cu != NULL) | |
24308 | { | |
24309 | struct dwarf2_per_cu_data *next_cu; | |
24310 | ||
24311 | next_cu = per_cu->cu->read_in_chain; | |
24312 | ||
24313 | if (!per_cu->cu->mark) | |
24314 | { | |
fcd3b13d | 24315 | delete per_cu->cu; |
ae038cb0 DJ |
24316 | *last_chain = next_cu; |
24317 | } | |
24318 | else | |
24319 | last_chain = &per_cu->cu->read_in_chain; | |
24320 | ||
24321 | per_cu = next_cu; | |
24322 | } | |
24323 | } | |
24324 | ||
24325 | /* Remove a single compilation unit from the cache. */ | |
24326 | ||
24327 | static void | |
dee91e82 | 24328 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
24329 | { |
24330 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
ed2dc618 SM |
24331 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24332 | = target_per_cu->dwarf2_per_objfile; | |
ae038cb0 DJ |
24333 | |
24334 | per_cu = dwarf2_per_objfile->read_in_chain; | |
24335 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
24336 | while (per_cu != NULL) | |
24337 | { | |
24338 | struct dwarf2_per_cu_data *next_cu; | |
24339 | ||
24340 | next_cu = per_cu->cu->read_in_chain; | |
24341 | ||
dee91e82 | 24342 | if (per_cu == target_per_cu) |
ae038cb0 | 24343 | { |
fcd3b13d | 24344 | delete per_cu->cu; |
dee91e82 | 24345 | per_cu->cu = NULL; |
ae038cb0 DJ |
24346 | *last_chain = next_cu; |
24347 | break; | |
24348 | } | |
24349 | else | |
24350 | last_chain = &per_cu->cu->read_in_chain; | |
24351 | ||
24352 | per_cu = next_cu; | |
24353 | } | |
24354 | } | |
24355 | ||
dee91e82 DE |
24356 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
24357 | We store these in a hash table separate from the DIEs, and preserve them | |
24358 | when the DIEs are flushed out of cache. | |
24359 | ||
24360 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 24361 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
24362 | or the type may come from a DWO file. Furthermore, while it's more logical |
24363 | to use per_cu->section+offset, with Fission the section with the data is in | |
24364 | the DWO file but we don't know that section at the point we need it. | |
24365 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
24366 | because we can enter the lookup routine, get_die_type_at_offset, from | |
24367 | outside this file, and thus won't necessarily have PER_CU->cu. | |
24368 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 24369 | |
dee91e82 | 24370 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 24371 | { |
dee91e82 | 24372 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 24373 | sect_offset sect_off; |
1c379e20 DJ |
24374 | struct type *type; |
24375 | }; | |
24376 | ||
dee91e82 | 24377 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
24378 | |
24379 | static hashval_t | |
dee91e82 | 24380 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 24381 | { |
9a3c8263 SM |
24382 | const struct dwarf2_per_cu_offset_and_type *ofs |
24383 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 24384 | |
9c541725 | 24385 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
24386 | } |
24387 | ||
dee91e82 | 24388 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
24389 | |
24390 | static int | |
dee91e82 | 24391 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 24392 | { |
9a3c8263 SM |
24393 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
24394 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
24395 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
24396 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 24397 | |
dee91e82 | 24398 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 24399 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
24400 | } |
24401 | ||
24402 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
24403 | table if necessary. For convenience, return TYPE. |
24404 | ||
24405 | The DIEs reading must have careful ordering to: | |
85102364 | 24406 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
24407 | reading current DIE. |
24408 | * Not trying to dereference contents of still incompletely read in types | |
24409 | while reading in other DIEs. | |
24410 | * Enable referencing still incompletely read in types just by a pointer to | |
24411 | the type without accessing its fields. | |
24412 | ||
24413 | Therefore caller should follow these rules: | |
24414 | * Try to fetch any prerequisite types we may need to build this DIE type | |
24415 | before building the type and calling set_die_type. | |
e71ec853 | 24416 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
24417 | possible before fetching more types to complete the current type. |
24418 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 24419 | |
f792889a | 24420 | static struct type * |
1c379e20 DJ |
24421 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
24422 | { | |
518817b3 SM |
24423 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24424 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 24425 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
ed2dc618 | 24426 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3cdcd0ce JB |
24427 | struct attribute *attr; |
24428 | struct dynamic_prop prop; | |
1c379e20 | 24429 | |
b4ba55a1 JB |
24430 | /* For Ada types, make sure that the gnat-specific data is always |
24431 | initialized (if not already set). There are a few types where | |
24432 | we should not be doing so, because the type-specific area is | |
24433 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
24434 | where the type-specific area is used to store the floatformat). | |
24435 | But this is not a problem, because the gnat-specific information | |
24436 | is actually not needed for these types. */ | |
24437 | if (need_gnat_info (cu) | |
24438 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
24439 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
24440 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
24441 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
24442 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
24443 | && !HAVE_GNAT_AUX_INFO (type)) |
24444 | INIT_GNAT_SPECIFIC (type); | |
24445 | ||
3f2f83dd KB |
24446 | /* Read DW_AT_allocated and set in type. */ |
24447 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
4fc6c0d5 | 24448 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 24449 | { |
09ba997f | 24450 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
9a49df9d | 24451 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
50a82047 | 24452 | add_dyn_prop (DYN_PROP_ALLOCATED, prop, type); |
3f2f83dd KB |
24453 | } |
24454 | else if (attr != NULL) | |
24455 | { | |
b98664d3 | 24456 | complaint (_("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 24457 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 24458 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
24459 | } |
24460 | ||
24461 | /* Read DW_AT_associated and set in type. */ | |
24462 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
4fc6c0d5 | 24463 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 24464 | { |
09ba997f | 24465 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
9a49df9d | 24466 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
50a82047 | 24467 | add_dyn_prop (DYN_PROP_ASSOCIATED, prop, type); |
3f2f83dd KB |
24468 | } |
24469 | else if (attr != NULL) | |
24470 | { | |
b98664d3 | 24471 | complaint (_("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 24472 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 24473 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
24474 | } |
24475 | ||
3cdcd0ce JB |
24476 | /* Read DW_AT_data_location and set in type. */ |
24477 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
9a49df9d | 24478 | if (attr_to_dynamic_prop (attr, die, cu, &prop, |
09ba997f | 24479 | cu->per_cu->addr_type ())) |
50a82047 | 24480 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type); |
3cdcd0ce | 24481 | |
dee91e82 | 24482 | if (dwarf2_per_objfile->die_type_hash == NULL) |
0335378b TT |
24483 | dwarf2_per_objfile->die_type_hash |
24484 | = htab_up (htab_create_alloc (127, | |
24485 | per_cu_offset_and_type_hash, | |
24486 | per_cu_offset_and_type_eq, | |
24487 | NULL, xcalloc, xfree)); | |
1c379e20 | 24488 | |
dee91e82 | 24489 | ofs.per_cu = cu->per_cu; |
9c541725 | 24490 | ofs.sect_off = die->sect_off; |
1c379e20 | 24491 | ofs.type = type; |
dee91e82 | 24492 | slot = (struct dwarf2_per_cu_offset_and_type **) |
0335378b | 24493 | htab_find_slot (dwarf2_per_objfile->die_type_hash.get (), &ofs, INSERT); |
7e314c57 | 24494 | if (*slot) |
b98664d3 | 24495 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 24496 | sect_offset_str (die->sect_off)); |
8d749320 SM |
24497 | *slot = XOBNEW (&objfile->objfile_obstack, |
24498 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 24499 | **slot = ofs; |
f792889a | 24500 | return type; |
1c379e20 DJ |
24501 | } |
24502 | ||
9c541725 | 24503 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 24504 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
24505 | |
24506 | static struct type * | |
9c541725 | 24507 | get_die_type_at_offset (sect_offset sect_off, |
673bfd45 | 24508 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 24509 | { |
dee91e82 | 24510 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
ed2dc618 | 24511 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
f792889a | 24512 | |
dee91e82 | 24513 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 24514 | return NULL; |
1c379e20 | 24515 | |
dee91e82 | 24516 | ofs.per_cu = per_cu; |
9c541725 | 24517 | ofs.sect_off = sect_off; |
9a3c8263 | 24518 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
0335378b | 24519 | htab_find (dwarf2_per_objfile->die_type_hash.get (), &ofs)); |
1c379e20 DJ |
24520 | if (slot) |
24521 | return slot->type; | |
24522 | else | |
24523 | return NULL; | |
24524 | } | |
24525 | ||
02142a6c | 24526 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
24527 | or return NULL if DIE does not have a saved type. */ |
24528 | ||
24529 | static struct type * | |
24530 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
24531 | { | |
9c541725 | 24532 | return get_die_type_at_offset (die->sect_off, cu->per_cu); |
673bfd45 DE |
24533 | } |
24534 | ||
10b3939b DJ |
24535 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
24536 | ||
24537 | static void | |
24538 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
24539 | struct dwarf2_per_cu_data *ref_per_cu) | |
24540 | { | |
24541 | void **slot; | |
24542 | ||
24543 | if (cu->dependencies == NULL) | |
24544 | cu->dependencies | |
24545 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
24546 | NULL, &cu->comp_unit_obstack, | |
24547 | hashtab_obstack_allocate, | |
24548 | dummy_obstack_deallocate); | |
24549 | ||
24550 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
24551 | if (*slot == NULL) | |
24552 | *slot = ref_per_cu; | |
24553 | } | |
1c379e20 | 24554 | |
f504f079 DE |
24555 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
24556 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
24557 | cache that we must keep because we are keeping CU. */ |
24558 | ||
10b3939b DJ |
24559 | static int |
24560 | dwarf2_mark_helper (void **slot, void *data) | |
24561 | { | |
24562 | struct dwarf2_per_cu_data *per_cu; | |
24563 | ||
24564 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
24565 | |
24566 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
24567 | reading of the chain. As such dependencies remain valid it is not much | |
24568 | useful to track and undo them during QUIT cleanups. */ | |
24569 | if (per_cu->cu == NULL) | |
24570 | return 1; | |
24571 | ||
10b3939b DJ |
24572 | if (per_cu->cu->mark) |
24573 | return 1; | |
9068261f | 24574 | per_cu->cu->mark = true; |
10b3939b DJ |
24575 | |
24576 | if (per_cu->cu->dependencies != NULL) | |
24577 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
24578 | ||
24579 | return 1; | |
24580 | } | |
24581 | ||
f504f079 DE |
24582 | /* Set the mark field in CU and in every other compilation unit in the |
24583 | cache that we must keep because we are keeping CU. */ | |
24584 | ||
ae038cb0 DJ |
24585 | static void |
24586 | dwarf2_mark (struct dwarf2_cu *cu) | |
24587 | { | |
24588 | if (cu->mark) | |
24589 | return; | |
9068261f | 24590 | cu->mark = true; |
10b3939b DJ |
24591 | if (cu->dependencies != NULL) |
24592 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
24593 | } |
24594 | ||
24595 | static void | |
24596 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
24597 | { | |
24598 | while (per_cu) | |
24599 | { | |
9068261f | 24600 | per_cu->cu->mark = false; |
ae038cb0 DJ |
24601 | per_cu = per_cu->cu->read_in_chain; |
24602 | } | |
72bf9492 DJ |
24603 | } |
24604 | ||
72bf9492 DJ |
24605 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
24606 | is its offset in .debug_info for this objfile. */ | |
24607 | ||
24608 | static hashval_t | |
24609 | partial_die_hash (const void *item) | |
24610 | { | |
9a3c8263 SM |
24611 | const struct partial_die_info *part_die |
24612 | = (const struct partial_die_info *) item; | |
9a619af0 | 24613 | |
9c541725 | 24614 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
24615 | } |
24616 | ||
24617 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
24618 | are equal if they have the same offset. */ | |
24619 | ||
24620 | static int | |
24621 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
24622 | { | |
9a3c8263 SM |
24623 | const struct partial_die_info *part_die_lhs |
24624 | = (const struct partial_die_info *) item_lhs; | |
24625 | const struct partial_die_info *part_die_rhs | |
24626 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 24627 | |
9c541725 | 24628 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
24629 | } |
24630 | ||
3c3bb058 AB |
24631 | struct cmd_list_element *set_dwarf_cmdlist; |
24632 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
24633 | |
24634 | static void | |
981a3fb3 | 24635 | set_dwarf_cmd (const char *args, int from_tty) |
ae038cb0 | 24636 | { |
b4f54984 | 24637 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 24638 | gdb_stdout); |
ae038cb0 DJ |
24639 | } |
24640 | ||
24641 | static void | |
981a3fb3 | 24642 | show_dwarf_cmd (const char *args, int from_tty) |
6e70227d | 24643 | { |
b4f54984 | 24644 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
24645 | } |
24646 | ||
9291a0cd | 24647 | static void |
cd4fb1b2 SM |
24648 | show_check_physname (struct ui_file *file, int from_tty, |
24649 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 24650 | { |
cd4fb1b2 SM |
24651 | fprintf_filtered (file, |
24652 | _("Whether to check \"physname\" is %s.\n"), | |
24653 | value); | |
9291a0cd TT |
24654 | } |
24655 | ||
6c265988 | 24656 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 24657 | void |
6c265988 | 24658 | _initialize_dwarf2_read () |
9291a0cd | 24659 | { |
cd4fb1b2 SM |
24660 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
24661 | Set DWARF specific variables.\n\ | |
590042fc | 24662 | Configure DWARF variables such as the cache size."), |
cd4fb1b2 SM |
24663 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
24664 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 24665 | |
cd4fb1b2 | 24666 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
590042fc PW |
24667 | Show DWARF specific variables.\n\ |
24668 | Show DWARF variables such as the cache size."), | |
cd4fb1b2 SM |
24669 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
24670 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 24671 | |
cd4fb1b2 SM |
24672 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
24673 | &dwarf_max_cache_age, _("\ | |
24674 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
24675 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
24676 | A higher limit means that cached compilation units will be stored\n\ | |
24677 | in memory longer, and more total memory will be used. Zero disables\n\ | |
24678 | caching, which can slow down startup."), | |
24679 | NULL, | |
24680 | show_dwarf_max_cache_age, | |
24681 | &set_dwarf_cmdlist, | |
24682 | &show_dwarf_cmdlist); | |
156942c7 | 24683 | |
cd4fb1b2 SM |
24684 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
24685 | Set debugging of the DWARF reader."), _("\ | |
24686 | Show debugging of the DWARF reader."), _("\ | |
24687 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
24688 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
24689 | information. A value greater than 1 provides more verbose information."), | |
24690 | NULL, | |
24691 | NULL, | |
24692 | &setdebuglist, &showdebuglist); | |
9291a0cd | 24693 | |
cd4fb1b2 SM |
24694 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
24695 | Set debugging of the DWARF DIE reader."), _("\ | |
24696 | Show debugging of the DWARF DIE reader."), _("\ | |
24697 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
24698 | The value is the maximum depth to print."), | |
24699 | NULL, | |
24700 | NULL, | |
24701 | &setdebuglist, &showdebuglist); | |
9291a0cd | 24702 | |
cd4fb1b2 SM |
24703 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
24704 | Set debugging of the dwarf line reader."), _("\ | |
24705 | Show debugging of the dwarf line reader."), _("\ | |
24706 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
24707 | A value of 1 (one) provides basic information.\n\ | |
24708 | A value greater than 1 provides more verbose information."), | |
24709 | NULL, | |
24710 | NULL, | |
24711 | &setdebuglist, &showdebuglist); | |
437afbb8 | 24712 | |
cd4fb1b2 SM |
24713 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
24714 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
24715 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
24716 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
24717 | the demangler."), | |
24718 | NULL, show_check_physname, | |
24719 | &setdebuglist, &showdebuglist); | |
900e11f9 | 24720 | |
e615022a DE |
24721 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
24722 | no_class, &use_deprecated_index_sections, _("\ | |
24723 | Set whether to use deprecated gdb_index sections."), _("\ | |
24724 | Show whether to use deprecated gdb_index sections."), _("\ | |
24725 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
24726 | Normally they are ignored either because of a missing feature or\n\ | |
24727 | performance issue.\n\ | |
24728 | Warning: This option must be enabled before gdb reads the file."), | |
24729 | NULL, | |
24730 | NULL, | |
24731 | &setlist, &showlist); | |
24732 | ||
f1e6e072 TT |
24733 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
24734 | &dwarf2_locexpr_funcs); | |
24735 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
24736 | &dwarf2_loclist_funcs); | |
24737 | ||
24738 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
24739 | &dwarf2_block_frame_base_locexpr_funcs); | |
24740 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
24741 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
24742 | |
24743 | #if GDB_SELF_TEST | |
24744 | selftests::register_test ("dw2_expand_symtabs_matching", | |
24745 | selftests::dw2_expand_symtabs_matching::run_test); | |
22b6cd70 TT |
24746 | selftests::register_test ("dwarf2_find_containing_comp_unit", |
24747 | selftests::find_containing_comp_unit::run_test); | |
c62446b1 | 24748 | #endif |
6502dd73 | 24749 | } |