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" |
9fda78b6 | 40 | #include "dwarf2/dwz.h" |
c90ec28a | 41 | #include "dwarf2/macro.h" |
c2d50fd0 | 42 | #include "dwarf2/die.h" |
2b2558bf | 43 | #include "dwarf2/stringify.h" |
4de283e4 TT |
44 | #include "bfd.h" |
45 | #include "elf-bfd.h" | |
46 | #include "symtab.h" | |
47 | #include "gdbtypes.h" | |
48 | #include "objfiles.h" | |
d55e5aa6 | 49 | #include "dwarf2.h" |
4de283e4 TT |
50 | #include "buildsym.h" |
51 | #include "demangle.h" | |
52 | #include "gdb-demangle.h" | |
4de283e4 | 53 | #include "filenames.h" /* for DOSish file names */ |
4de283e4 TT |
54 | #include "language.h" |
55 | #include "complaints.h" | |
82ca8957 TT |
56 | #include "dwarf2/expr.h" |
57 | #include "dwarf2/loc.h" | |
4de283e4 TT |
58 | #include "cp-support.h" |
59 | #include "hashtab.h" | |
60 | #include "command.h" | |
d55e5aa6 | 61 | #include "gdbcmd.h" |
4de283e4 TT |
62 | #include "block.h" |
63 | #include "addrmap.h" | |
64 | #include "typeprint.h" | |
65 | #include "psympriv.h" | |
4de283e4 | 66 | #include "c-lang.h" |
d55e5aa6 | 67 | #include "go-lang.h" |
4de283e4 TT |
68 | #include "valprint.h" |
69 | #include "gdbcore.h" /* for gnutarget */ | |
70 | #include "gdb/gdb-index.h" | |
4de283e4 TT |
71 | #include "gdb_bfd.h" |
72 | #include "f-lang.h" | |
73 | #include "source.h" | |
4de283e4 | 74 | #include "build-id.h" |
d55e5aa6 | 75 | #include "namespace.h" |
268a13a5 TT |
76 | #include "gdbsupport/function-view.h" |
77 | #include "gdbsupport/gdb_optional.h" | |
78 | #include "gdbsupport/underlying.h" | |
268a13a5 | 79 | #include "gdbsupport/hash_enum.h" |
4de283e4 | 80 | #include "filename-seen-cache.h" |
b32b108a | 81 | #include "producer.h" |
4de283e4 | 82 | #include <fcntl.h> |
4de283e4 | 83 | #include <algorithm> |
4de283e4 | 84 | #include <unordered_map> |
268a13a5 | 85 | #include "gdbsupport/selftest.h" |
c9317f21 | 86 | #include "rust-lang.h" |
268a13a5 | 87 | #include "gdbsupport/pathstuff.h" |
edd45eb0 | 88 | #include "count-one-bits.h" |
0d79cdc4 | 89 | #include "debuginfod-support.h" |
437afbb8 | 90 | |
73be47f5 DE |
91 | /* When == 1, print basic high level tracing messages. |
92 | When > 1, be more verbose. | |
b4f54984 DE |
93 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
94 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 95 | |
d97bc12b | 96 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 97 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 98 | |
27e0867f | 99 | /* When non-zero, dump line number entries as they are read in. */ |
8fdd972c | 100 | unsigned int dwarf_line_debug = 0; |
27e0867f | 101 | |
491144b5 CB |
102 | /* When true, cross-check physname against demangler. */ |
103 | static bool check_physname = false; | |
900e11f9 | 104 | |
491144b5 CB |
105 | /* When true, do not reject deprecated .gdb_index sections. */ |
106 | static bool use_deprecated_index_sections = false; | |
481860b3 | 107 | |
5bfd760d | 108 | static const struct objfile_key<dwarf2_per_objfile> dwarf2_objfile_data_key; |
6502dd73 | 109 | |
f1e6e072 TT |
110 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
111 | ||
112 | static int dwarf2_locexpr_index; | |
113 | static int dwarf2_loclist_index; | |
114 | static int dwarf2_locexpr_block_index; | |
115 | static int dwarf2_loclist_block_index; | |
116 | ||
3f563c84 PA |
117 | /* An index into a (C++) symbol name component in a symbol name as |
118 | recorded in the mapped_index's symbol table. For each C++ symbol | |
119 | in the symbol table, we record one entry for the start of each | |
120 | component in the symbol in a table of name components, and then | |
121 | sort the table, in order to be able to binary search symbol names, | |
122 | ignoring leading namespaces, both completion and regular look up. | |
123 | For example, for symbol "A::B::C", we'll have an entry that points | |
124 | to "A::B::C", another that points to "B::C", and another for "C". | |
125 | Note that function symbols in GDB index have no parameter | |
126 | information, just the function/method names. You can convert a | |
127 | name_component to a "const char *" using the | |
128 | 'mapped_index::symbol_name_at(offset_type)' method. */ | |
129 | ||
130 | struct name_component | |
131 | { | |
132 | /* Offset in the symbol name where the component starts. Stored as | |
133 | a (32-bit) offset instead of a pointer to save memory and improve | |
134 | locality on 64-bit architectures. */ | |
135 | offset_type name_offset; | |
136 | ||
137 | /* The symbol's index in the symbol and constant pool tables of a | |
138 | mapped_index. */ | |
139 | offset_type idx; | |
140 | }; | |
141 | ||
44ed8f3e PA |
142 | /* Base class containing bits shared by both .gdb_index and |
143 | .debug_name indexes. */ | |
144 | ||
145 | struct mapped_index_base | |
146 | { | |
22ca247e TT |
147 | mapped_index_base () = default; |
148 | DISABLE_COPY_AND_ASSIGN (mapped_index_base); | |
149 | ||
44ed8f3e PA |
150 | /* The name_component table (a sorted vector). See name_component's |
151 | description above. */ | |
152 | std::vector<name_component> name_components; | |
153 | ||
154 | /* How NAME_COMPONENTS is sorted. */ | |
155 | enum case_sensitivity name_components_casing; | |
156 | ||
157 | /* Return the number of names in the symbol table. */ | |
158 | virtual size_t symbol_name_count () const = 0; | |
159 | ||
160 | /* Get the name of the symbol at IDX in the symbol table. */ | |
161 | virtual const char *symbol_name_at (offset_type idx) const = 0; | |
162 | ||
163 | /* Return whether the name at IDX in the symbol table should be | |
164 | ignored. */ | |
165 | virtual bool symbol_name_slot_invalid (offset_type idx) const | |
166 | { | |
167 | return false; | |
168 | } | |
169 | ||
170 | /* Build the symbol name component sorted vector, if we haven't | |
171 | yet. */ | |
172 | void build_name_components (); | |
173 | ||
174 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
175 | possible matches for LN_NO_PARAMS in the name component | |
176 | vector. */ | |
177 | std::pair<std::vector<name_component>::const_iterator, | |
178 | std::vector<name_component>::const_iterator> | |
3b00ef10 TT |
179 | find_name_components_bounds (const lookup_name_info &ln_no_params, |
180 | enum language lang) const; | |
44ed8f3e PA |
181 | |
182 | /* Prevent deleting/destroying via a base class pointer. */ | |
183 | protected: | |
184 | ~mapped_index_base() = default; | |
185 | }; | |
186 | ||
9291a0cd TT |
187 | /* A description of the mapped index. The file format is described in |
188 | a comment by the code that writes the index. */ | |
fc898b42 | 189 | struct mapped_index final : public mapped_index_base |
9291a0cd | 190 | { |
f00a2de2 PA |
191 | /* A slot/bucket in the symbol table hash. */ |
192 | struct symbol_table_slot | |
193 | { | |
194 | const offset_type name; | |
195 | const offset_type vec; | |
196 | }; | |
197 | ||
559a7a62 | 198 | /* Index data format version. */ |
3063847f | 199 | int version = 0; |
559a7a62 | 200 | |
f00a2de2 PA |
201 | /* The address table data. */ |
202 | gdb::array_view<const gdb_byte> address_table; | |
b11b1f88 | 203 | |
3876f04e | 204 | /* The symbol table, implemented as a hash table. */ |
f00a2de2 | 205 | gdb::array_view<symbol_table_slot> symbol_table; |
b11b1f88 | 206 | |
9291a0cd | 207 | /* A pointer to the constant pool. */ |
3063847f | 208 | const char *constant_pool = nullptr; |
3f563c84 | 209 | |
44ed8f3e PA |
210 | bool symbol_name_slot_invalid (offset_type idx) const override |
211 | { | |
212 | const auto &bucket = this->symbol_table[idx]; | |
9ab08412 | 213 | return bucket.name == 0 && bucket.vec == 0; |
44ed8f3e | 214 | } |
5c58de74 | 215 | |
3f563c84 PA |
216 | /* Convenience method to get at the name of the symbol at IDX in the |
217 | symbol table. */ | |
44ed8f3e | 218 | const char *symbol_name_at (offset_type idx) const override |
f00a2de2 | 219 | { return this->constant_pool + MAYBE_SWAP (this->symbol_table[idx].name); } |
5c58de74 | 220 | |
44ed8f3e PA |
221 | size_t symbol_name_count () const override |
222 | { return this->symbol_table.size (); } | |
9291a0cd TT |
223 | }; |
224 | ||
927aa2e7 JK |
225 | /* A description of the mapped .debug_names. |
226 | Uninitialized map has CU_COUNT 0. */ | |
fc898b42 | 227 | struct mapped_debug_names final : public mapped_index_base |
927aa2e7 | 228 | { |
ed2dc618 SM |
229 | mapped_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile_) |
230 | : dwarf2_per_objfile (dwarf2_per_objfile_) | |
231 | {} | |
232 | ||
233 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
927aa2e7 JK |
234 | bfd_endian dwarf5_byte_order; |
235 | bool dwarf5_is_dwarf64; | |
236 | bool augmentation_is_gdb; | |
237 | uint8_t offset_size; | |
238 | uint32_t cu_count = 0; | |
239 | uint32_t tu_count, bucket_count, name_count; | |
240 | const gdb_byte *cu_table_reordered, *tu_table_reordered; | |
241 | const uint32_t *bucket_table_reordered, *hash_table_reordered; | |
242 | const gdb_byte *name_table_string_offs_reordered; | |
243 | const gdb_byte *name_table_entry_offs_reordered; | |
244 | const gdb_byte *entry_pool; | |
245 | ||
246 | struct index_val | |
247 | { | |
248 | ULONGEST dwarf_tag; | |
249 | struct attr | |
250 | { | |
251 | /* Attribute name DW_IDX_*. */ | |
252 | ULONGEST dw_idx; | |
253 | ||
254 | /* Attribute form DW_FORM_*. */ | |
255 | ULONGEST form; | |
256 | ||
257 | /* Value if FORM is DW_FORM_implicit_const. */ | |
258 | LONGEST implicit_const; | |
259 | }; | |
260 | std::vector<attr> attr_vec; | |
261 | }; | |
262 | ||
263 | std::unordered_map<ULONGEST, index_val> abbrev_map; | |
264 | ||
265 | const char *namei_to_name (uint32_t namei) const; | |
44ed8f3e PA |
266 | |
267 | /* Implementation of the mapped_index_base virtual interface, for | |
268 | the name_components cache. */ | |
269 | ||
270 | const char *symbol_name_at (offset_type idx) const override | |
271 | { return namei_to_name (idx); } | |
272 | ||
273 | size_t symbol_name_count () const override | |
274 | { return this->name_count; } | |
927aa2e7 JK |
275 | }; |
276 | ||
cd4fb1b2 | 277 | /* See dwarf2read.h. */ |
ed2dc618 | 278 | |
cd4fb1b2 | 279 | dwarf2_per_objfile * |
ed2dc618 SM |
280 | get_dwarf2_per_objfile (struct objfile *objfile) |
281 | { | |
5bfd760d | 282 | return dwarf2_objfile_data_key.get (objfile); |
ed2dc618 | 283 | } |
c906108c | 284 | |
251d32d9 | 285 | /* Default names of the debugging sections. */ |
c906108c | 286 | |
233a11ab CS |
287 | /* Note that if the debugging section has been compressed, it might |
288 | have a name like .zdebug_info. */ | |
289 | ||
9cdd5dbd DE |
290 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
291 | { | |
251d32d9 TG |
292 | { ".debug_info", ".zdebug_info" }, |
293 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
294 | { ".debug_line", ".zdebug_line" }, | |
295 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 296 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 297 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 298 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 299 | { ".debug_str", ".zdebug_str" }, |
18a8505e | 300 | { ".debug_str_offsets", ".zdebug_str_offsets" }, |
43988095 | 301 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 302 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 303 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 304 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 305 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
306 | { ".debug_frame", ".zdebug_frame" }, |
307 | { ".eh_frame", NULL }, | |
24d3216f | 308 | { ".gdb_index", ".zgdb_index" }, |
927aa2e7 JK |
309 | { ".debug_names", ".zdebug_names" }, |
310 | { ".debug_aranges", ".zdebug_aranges" }, | |
24d3216f | 311 | 23 |
251d32d9 | 312 | }; |
c906108c | 313 | |
80626a55 | 314 | /* List of DWO/DWP sections. */ |
3019eac3 | 315 | |
80626a55 | 316 | static const struct dwop_section_names |
3019eac3 DE |
317 | { |
318 | struct dwarf2_section_names abbrev_dwo; | |
319 | struct dwarf2_section_names info_dwo; | |
320 | struct dwarf2_section_names line_dwo; | |
321 | struct dwarf2_section_names loc_dwo; | |
43988095 | 322 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
323 | struct dwarf2_section_names macinfo_dwo; |
324 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
325 | struct dwarf2_section_names str_dwo; |
326 | struct dwarf2_section_names str_offsets_dwo; | |
327 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
328 | struct dwarf2_section_names cu_index; |
329 | struct dwarf2_section_names tu_index; | |
3019eac3 | 330 | } |
80626a55 | 331 | dwop_section_names = |
3019eac3 DE |
332 | { |
333 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
334 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
335 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
336 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 337 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
338 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
339 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
340 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
341 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
342 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
343 | { ".debug_cu_index", ".zdebug_cu_index" }, |
344 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
345 | }; |
346 | ||
c906108c SS |
347 | /* local data types */ |
348 | ||
3da10d80 KS |
349 | /* Type used for delaying computation of method physnames. |
350 | See comments for compute_delayed_physnames. */ | |
351 | struct delayed_method_info | |
352 | { | |
353 | /* The type to which the method is attached, i.e., its parent class. */ | |
354 | struct type *type; | |
355 | ||
356 | /* The index of the method in the type's function fieldlists. */ | |
357 | int fnfield_index; | |
358 | ||
359 | /* The index of the method in the fieldlist. */ | |
360 | int index; | |
361 | ||
362 | /* The name of the DIE. */ | |
363 | const char *name; | |
364 | ||
365 | /* The DIE associated with this method. */ | |
366 | struct die_info *die; | |
367 | }; | |
368 | ||
e7c27a73 DJ |
369 | /* Internal state when decoding a particular compilation unit. */ |
370 | struct dwarf2_cu | |
371 | { | |
fcd3b13d SM |
372 | explicit dwarf2_cu (struct dwarf2_per_cu_data *per_cu); |
373 | ~dwarf2_cu (); | |
374 | ||
375 | DISABLE_COPY_AND_ASSIGN (dwarf2_cu); | |
376 | ||
c24bdb02 KS |
377 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
378 | Create the set of symtabs used by this TU, or if this TU is sharing | |
379 | symtabs with another TU and the symtabs have already been created | |
380 | then restore those symtabs in the line header. | |
381 | We don't need the pc/line-number mapping for type units. */ | |
382 | void setup_type_unit_groups (struct die_info *die); | |
383 | ||
384 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the | |
385 | buildsym_compunit constructor. */ | |
386 | struct compunit_symtab *start_symtab (const char *name, | |
387 | const char *comp_dir, | |
388 | CORE_ADDR low_pc); | |
389 | ||
390 | /* Reset the builder. */ | |
391 | void reset_builder () { m_builder.reset (); } | |
392 | ||
d00adf39 | 393 | /* The header of the compilation unit. */ |
fcd3b13d | 394 | struct comp_unit_head header {}; |
e142c38c | 395 | |
d00adf39 | 396 | /* Base address of this compilation unit. */ |
2b24b6e4 | 397 | gdb::optional<CORE_ADDR> base_address; |
d00adf39 | 398 | |
e142c38c | 399 | /* The language we are debugging. */ |
fcd3b13d SM |
400 | enum language language = language_unknown; |
401 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 402 | |
fcd3b13d | 403 | const char *producer = nullptr; |
b0f35d58 | 404 | |
c24bdb02 | 405 | private: |
804d2729 TT |
406 | /* The symtab builder for this CU. This is only non-NULL when full |
407 | symbols are being read. */ | |
c24bdb02 | 408 | std::unique_ptr<buildsym_compunit> m_builder; |
804d2729 | 409 | |
c24bdb02 | 410 | public: |
e142c38c DJ |
411 | /* The generic symbol table building routines have separate lists for |
412 | file scope symbols and all all other scopes (local scopes). So | |
413 | we need to select the right one to pass to add_symbol_to_list(). | |
414 | We do it by keeping a pointer to the correct list in list_in_scope. | |
415 | ||
416 | FIXME: The original dwarf code just treated the file scope as the | |
417 | first local scope, and all other local scopes as nested local | |
418 | scopes, and worked fine. Check to see if we really need to | |
419 | distinguish these in buildsym.c. */ | |
fcd3b13d | 420 | struct pending **list_in_scope = nullptr; |
e142c38c | 421 | |
b64f50a1 JK |
422 | /* Hash table holding all the loaded partial DIEs |
423 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 424 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
425 | |
426 | /* Storage for things with the same lifetime as this read-in compilation | |
427 | unit, including partial DIEs. */ | |
fcd3b13d | 428 | auto_obstack comp_unit_obstack; |
72bf9492 | 429 | |
ae038cb0 DJ |
430 | /* When multiple dwarf2_cu structures are living in memory, this field |
431 | chains them all together, so that they can be released efficiently. | |
432 | We will probably also want a generation counter so that most-recently-used | |
433 | compilation units are cached... */ | |
fcd3b13d | 434 | struct dwarf2_per_cu_data *read_in_chain = nullptr; |
ae038cb0 | 435 | |
69d751e3 | 436 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
437 | struct dwarf2_per_cu_data *per_cu; |
438 | ||
439 | /* How many compilation units ago was this CU last referenced? */ | |
fcd3b13d | 440 | int last_used = 0; |
ae038cb0 | 441 | |
b64f50a1 JK |
442 | /* A hash table of DIE cu_offset for following references with |
443 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 444 | htab_t die_hash = nullptr; |
10b3939b DJ |
445 | |
446 | /* Full DIEs if read in. */ | |
fcd3b13d | 447 | struct die_info *dies = nullptr; |
10b3939b DJ |
448 | |
449 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
450 | units referenced by this one. Only set during full symbol processing; | |
451 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 452 | htab_t dependencies = nullptr; |
10b3939b | 453 | |
cb1df416 | 454 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 455 | struct line_header *line_header = nullptr; |
4c8aa72d PA |
456 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
457 | it's owned by dwarf2_per_objfile::line_header_hash. If non-NULL, | |
458 | this is the DW_TAG_compile_unit die for this CU. We'll hold on | |
459 | to the line header as long as this DIE is being processed. See | |
460 | process_die_scope. */ | |
fcd3b13d | 461 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 462 | |
3da10d80 KS |
463 | /* A list of methods which need to have physnames computed |
464 | after all type information has been read. */ | |
c89b44cd | 465 | std::vector<delayed_method_info> method_list; |
3da10d80 | 466 | |
96408a79 | 467 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 468 | htab_t call_site_htab = nullptr; |
96408a79 | 469 | |
034e5797 DE |
470 | /* Non-NULL if this CU came from a DWO file. |
471 | There is an invariant here that is important to remember: | |
472 | Except for attributes copied from the top level DIE in the "main" | |
473 | (or "stub") file in preparation for reading the DWO file | |
18a8505e | 474 | (e.g., DW_AT_addr_base), we KISS: there is only *one* CU. |
034e5797 DE |
475 | Either there isn't a DWO file (in which case this is NULL and the point |
476 | is moot), or there is and either we're not going to read it (in which | |
477 | case this is NULL) or there is and we are reading it (in which case this | |
478 | is non-NULL). */ | |
fcd3b13d | 479 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 | 480 | |
18a8505e | 481 | /* The DW_AT_addr_base (DW_AT_GNU_addr_base) attribute if present. |
1dbab08b | 482 | Note this value comes from the Fission stub CU/TU's DIE. */ |
18a8505e | 483 | gdb::optional<ULONGEST> addr_base; |
3019eac3 | 484 | |
18a8505e | 485 | /* The DW_AT_rnglists_base attribute if present. |
1dbab08b | 486 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 487 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
488 | be used without needing to know whether DWO files are in use or not. |
489 | N.B. This does not apply to DW_AT_ranges appearing in | |
490 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
491 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
18a8505e | 492 | DW_AT_rnglists_base *would* have to be applied, and we'd have to care |
ab435259 | 493 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ |
fcd3b13d | 494 | ULONGEST ranges_base = 0; |
2e3cf129 | 495 | |
c9317f21 TT |
496 | /* When reading debug info generated by older versions of rustc, we |
497 | have to rewrite some union types to be struct types with a | |
498 | variant part. This rewriting must be done after the CU is fully | |
499 | read in, because otherwise at the point of rewriting some struct | |
500 | type might not have been fully processed. So, we keep a list of | |
501 | all such types here and process them after expansion. */ | |
502 | std::vector<struct type *> rust_unions; | |
503 | ||
18a8505e AT |
504 | /* The DW_AT_str_offsets_base attribute if present. For DWARF 4 version DWO |
505 | files, the value is implicitly zero. For DWARF 5 version DWO files, the | |
506 | value is often implicit and is the size of the header of | |
507 | .debug_str_offsets section (8 or 4, depending on the address size). */ | |
508 | gdb::optional<ULONGEST> str_offsets_base; | |
509 | ||
ae038cb0 | 510 | /* Mark used when releasing cached dies. */ |
9068261f | 511 | bool mark : 1; |
ae038cb0 | 512 | |
8be455d7 JK |
513 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
514 | This test is imperfect as there may exist optimized debug code not using | |
515 | any location list and still facing inlining issues if handled as | |
516 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
9068261f | 517 | bool has_loclist : 1; |
ba919b58 | 518 | |
9068261f | 519 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is true |
1b80a9fa JK |
520 | if all the producer_is_* fields are valid. This information is cached |
521 | because profiling CU expansion showed excessive time spent in | |
522 | producer_is_gxx_lt_4_6. */ | |
9068261f AB |
523 | bool checked_producer : 1; |
524 | bool producer_is_gxx_lt_4_6 : 1; | |
525 | bool producer_is_gcc_lt_4_3 : 1; | |
eb77c9df | 526 | bool producer_is_icc : 1; |
9068261f | 527 | bool producer_is_icc_lt_14 : 1; |
c258c396 | 528 | bool producer_is_codewarrior : 1; |
4d4ec4e5 | 529 | |
9068261f | 530 | /* When true, the file that we're processing is known to have |
4d4ec4e5 TT |
531 | debugging info for C++ namespaces. GCC 3.3.x did not produce |
532 | this information, but later versions do. */ | |
533 | ||
9068261f | 534 | bool processing_has_namespace_info : 1; |
d590ff25 YQ |
535 | |
536 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
c24bdb02 KS |
537 | |
538 | /* If this CU was inherited by another CU (via specification, | |
539 | abstract_origin, etc), this is the ancestor CU. */ | |
540 | dwarf2_cu *ancestor; | |
541 | ||
542 | /* Get the buildsym_compunit for this CU. */ | |
543 | buildsym_compunit *get_builder () | |
544 | { | |
545 | /* If this CU has a builder associated with it, use that. */ | |
546 | if (m_builder != nullptr) | |
547 | return m_builder.get (); | |
548 | ||
549 | /* Otherwise, search ancestors for a valid builder. */ | |
550 | if (ancestor != nullptr) | |
551 | return ancestor->get_builder (); | |
552 | ||
553 | return nullptr; | |
554 | } | |
e7c27a73 DJ |
555 | }; |
556 | ||
094b34ac DE |
557 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
558 | This includes type_unit_group and quick_file_names. */ | |
559 | ||
560 | struct stmt_list_hash | |
561 | { | |
562 | /* The DWO unit this table is from or NULL if there is none. */ | |
563 | struct dwo_unit *dwo_unit; | |
564 | ||
565 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 566 | sect_offset line_sect_off; |
094b34ac DE |
567 | }; |
568 | ||
f4dc4d17 DE |
569 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
570 | an object of this type. */ | |
571 | ||
572 | struct type_unit_group | |
573 | { | |
0186c6a7 | 574 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
575 | To simplify things we create an artificial CU that "includes" all the |
576 | type units using this stmt_list so that the rest of the code still has | |
197400e8 | 577 | a "per_cu" handle on the symtab. */ |
094b34ac DE |
578 | struct dwarf2_per_cu_data per_cu; |
579 | ||
0186c6a7 DE |
580 | /* The TUs that share this DW_AT_stmt_list entry. |
581 | This is added to while parsing type units to build partial symtabs, | |
582 | and is deleted afterwards and not used again. */ | |
a8b3b8e9 | 583 | std::vector<signatured_type *> *tus; |
f4dc4d17 | 584 | |
43f3e411 | 585 | /* The compunit symtab. |
094b34ac | 586 | Type units in a group needn't all be defined in the same source file, |
43f3e411 DE |
587 | so we create an essentially anonymous symtab as the compunit symtab. */ |
588 | struct compunit_symtab *compunit_symtab; | |
f4dc4d17 | 589 | |
094b34ac DE |
590 | /* The data used to construct the hash key. */ |
591 | struct stmt_list_hash hash; | |
f4dc4d17 | 592 | |
f4dc4d17 DE |
593 | /* The symbol tables for this TU (obtained from the files listed in |
594 | DW_AT_stmt_list). | |
595 | WARNING: The order of entries here must match the order of entries | |
596 | in the line header. After the first TU using this type_unit_group, the | |
597 | line header for the subsequent TUs is recreated from this. This is done | |
598 | because we need to use the same symtabs for each TU using the same | |
599 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
600 | there's no guarantee the line header doesn't have duplicate entries. */ | |
601 | struct symtab **symtabs; | |
602 | }; | |
603 | ||
73869dc2 | 604 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
605 | |
606 | struct dwo_sections | |
607 | { | |
608 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
609 | struct dwarf2_section_info line; |
610 | struct dwarf2_section_info loc; | |
43988095 | 611 | struct dwarf2_section_info loclists; |
09262596 DE |
612 | struct dwarf2_section_info macinfo; |
613 | struct dwarf2_section_info macro; | |
3019eac3 DE |
614 | struct dwarf2_section_info str; |
615 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
616 | /* In the case of a virtual DWO file, these two are unused. */ |
617 | struct dwarf2_section_info info; | |
fd5866f6 | 618 | std::vector<dwarf2_section_info> types; |
3019eac3 DE |
619 | }; |
620 | ||
c88ee1f0 | 621 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
622 | |
623 | struct dwo_unit | |
624 | { | |
625 | /* Backlink to the containing struct dwo_file. */ | |
626 | struct dwo_file *dwo_file; | |
627 | ||
628 | /* The "id" that distinguishes this CU/TU. | |
629 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
630 | Since signatures came first, we stick with it for consistency. */ | |
631 | ULONGEST signature; | |
632 | ||
633 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 634 | struct dwarf2_section_info *section; |
3019eac3 | 635 | |
9c541725 PA |
636 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
637 | sect_offset sect_off; | |
3019eac3 DE |
638 | unsigned int length; |
639 | ||
640 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
641 | cu_offset type_offset_in_tu; | |
642 | }; | |
643 | ||
73869dc2 DE |
644 | /* include/dwarf2.h defines the DWP section codes. |
645 | It defines a max value but it doesn't define a min value, which we | |
646 | use for error checking, so provide one. */ | |
647 | ||
648 | enum dwp_v2_section_ids | |
649 | { | |
650 | DW_SECT_MIN = 1 | |
651 | }; | |
652 | ||
80626a55 | 653 | /* Data for one DWO file. |
57d63ce2 DE |
654 | |
655 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
656 | appears in a DWP file). DWP files don't really have DWO files per se - | |
657 | comdat folding of types "loses" the DWO file they came from, and from | |
658 | a high level view DWP files appear to contain a mass of random types. | |
659 | However, to maintain consistency with the non-DWP case we pretend DWP | |
660 | files contain virtual DWO files, and we assign each TU with one virtual | |
661 | DWO file (generally based on the line and abbrev section offsets - | |
662 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
663 | |
664 | struct dwo_file | |
665 | { | |
51ac9db5 SM |
666 | dwo_file () = default; |
667 | DISABLE_COPY_AND_ASSIGN (dwo_file); | |
668 | ||
18a8505e | 669 | /* The DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. |
80626a55 DE |
670 | For virtual DWO files the name is constructed from the section offsets |
671 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
672 | from related CU+TUs. */ | |
51ac9db5 | 673 | const char *dwo_name = nullptr; |
0ac5b59e DE |
674 | |
675 | /* The DW_AT_comp_dir attribute. */ | |
51ac9db5 | 676 | const char *comp_dir = nullptr; |
3019eac3 | 677 | |
80626a55 DE |
678 | /* The bfd, when the file is open. Otherwise this is NULL. |
679 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
fb1eb2f9 | 680 | gdb_bfd_ref_ptr dbfd; |
3019eac3 | 681 | |
73869dc2 DE |
682 | /* The sections that make up this DWO file. |
683 | Remember that for virtual DWO files in DWP V2, these are virtual | |
684 | sections (for lack of a better name). */ | |
51ac9db5 | 685 | struct dwo_sections sections {}; |
3019eac3 | 686 | |
33c5cd75 DB |
687 | /* The CUs in the file. |
688 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
689 | an extension to handle LLVM's Link Time Optimization output (where | |
690 | multiple source files may be compiled into a single object/dwo pair). */ | |
b0b6a987 | 691 | htab_up cus; |
3019eac3 DE |
692 | |
693 | /* Table of TUs in the file. | |
694 | Each element is a struct dwo_unit. */ | |
b0b6a987 | 695 | htab_up tus; |
3019eac3 DE |
696 | }; |
697 | ||
80626a55 DE |
698 | /* These sections are what may appear in a DWP file. */ |
699 | ||
700 | struct dwp_sections | |
701 | { | |
73869dc2 | 702 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
703 | struct dwarf2_section_info str; |
704 | struct dwarf2_section_info cu_index; | |
705 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
706 | |
707 | /* These are only used by DWP version 2 files. | |
708 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
709 | sections are referenced by section number, and are not recorded here. | |
710 | In DWP version 2 there is at most one copy of all these sections, each | |
711 | section being (effectively) comprised of the concatenation of all of the | |
712 | individual sections that exist in the version 1 format. | |
713 | To keep the code simple we treat each of these concatenated pieces as a | |
714 | section itself (a virtual section?). */ | |
715 | struct dwarf2_section_info abbrev; | |
716 | struct dwarf2_section_info info; | |
717 | struct dwarf2_section_info line; | |
718 | struct dwarf2_section_info loc; | |
719 | struct dwarf2_section_info macinfo; | |
720 | struct dwarf2_section_info macro; | |
721 | struct dwarf2_section_info str_offsets; | |
722 | struct dwarf2_section_info types; | |
80626a55 DE |
723 | }; |
724 | ||
73869dc2 DE |
725 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
726 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 727 | |
73869dc2 | 728 | struct virtual_v1_dwo_sections |
80626a55 DE |
729 | { |
730 | struct dwarf2_section_info abbrev; | |
731 | struct dwarf2_section_info line; | |
732 | struct dwarf2_section_info loc; | |
733 | struct dwarf2_section_info macinfo; | |
734 | struct dwarf2_section_info macro; | |
735 | struct dwarf2_section_info str_offsets; | |
736 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 737 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
738 | struct dwarf2_section_info info_or_types; |
739 | }; | |
740 | ||
73869dc2 DE |
741 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
742 | In version 2, the sections of the DWO files are concatenated together | |
743 | and stored in one section of that name. Thus each ELF section contains | |
744 | several "virtual" sections. */ | |
745 | ||
746 | struct virtual_v2_dwo_sections | |
747 | { | |
748 | bfd_size_type abbrev_offset; | |
749 | bfd_size_type abbrev_size; | |
750 | ||
751 | bfd_size_type line_offset; | |
752 | bfd_size_type line_size; | |
753 | ||
754 | bfd_size_type loc_offset; | |
755 | bfd_size_type loc_size; | |
756 | ||
757 | bfd_size_type macinfo_offset; | |
758 | bfd_size_type macinfo_size; | |
759 | ||
760 | bfd_size_type macro_offset; | |
761 | bfd_size_type macro_size; | |
762 | ||
763 | bfd_size_type str_offsets_offset; | |
764 | bfd_size_type str_offsets_size; | |
765 | ||
766 | /* Each DWP hash table entry records one CU or one TU. | |
767 | That is recorded here, and copied to dwo_unit.section. */ | |
768 | bfd_size_type info_or_types_offset; | |
769 | bfd_size_type info_or_types_size; | |
770 | }; | |
771 | ||
80626a55 DE |
772 | /* Contents of DWP hash tables. */ |
773 | ||
774 | struct dwp_hash_table | |
775 | { | |
73869dc2 | 776 | uint32_t version, nr_columns; |
80626a55 | 777 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
778 | const gdb_byte *hash_table, *unit_table; |
779 | union | |
780 | { | |
781 | struct | |
782 | { | |
783 | const gdb_byte *indices; | |
784 | } v1; | |
785 | struct | |
786 | { | |
787 | /* This is indexed by column number and gives the id of the section | |
788 | in that column. */ | |
789 | #define MAX_NR_V2_DWO_SECTIONS \ | |
790 | (1 /* .debug_info or .debug_types */ \ | |
791 | + 1 /* .debug_abbrev */ \ | |
792 | + 1 /* .debug_line */ \ | |
793 | + 1 /* .debug_loc */ \ | |
794 | + 1 /* .debug_str_offsets */ \ | |
795 | + 1 /* .debug_macro or .debug_macinfo */) | |
796 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
797 | const gdb_byte *offsets; | |
798 | const gdb_byte *sizes; | |
799 | } v2; | |
800 | } section_pool; | |
80626a55 DE |
801 | }; |
802 | ||
803 | /* Data for one DWP file. */ | |
804 | ||
805 | struct dwp_file | |
806 | { | |
400174b1 TT |
807 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
808 | : name (name_), | |
809 | dbfd (std::move (abfd)) | |
810 | { | |
811 | } | |
812 | ||
80626a55 DE |
813 | /* Name of the file. */ |
814 | const char *name; | |
815 | ||
73869dc2 | 816 | /* File format version. */ |
400174b1 | 817 | int version = 0; |
73869dc2 | 818 | |
93417882 | 819 | /* The bfd. */ |
400174b1 | 820 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
821 | |
822 | /* Section info for this file. */ | |
400174b1 | 823 | struct dwp_sections sections {}; |
80626a55 | 824 | |
57d63ce2 | 825 | /* Table of CUs in the file. */ |
400174b1 | 826 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
827 | |
828 | /* Table of TUs in the file. */ | |
400174b1 | 829 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 830 | |
19ac8c2e | 831 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
48b490f2 TT |
832 | htab_up loaded_cus; |
833 | htab_up loaded_tus; | |
80626a55 | 834 | |
73869dc2 DE |
835 | /* Table to map ELF section numbers to their sections. |
836 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
837 | unsigned int num_sections = 0; |
838 | asection **elf_sections = nullptr; | |
80626a55 DE |
839 | }; |
840 | ||
0963b4bd MS |
841 | /* Struct used to pass misc. parameters to read_die_and_children, et |
842 | al. which are used for both .debug_info and .debug_types dies. | |
843 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 844 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
845 | |
846 | struct die_reader_specs | |
847 | { | |
a32a8923 | 848 | /* The bfd of die_section. */ |
93311388 DE |
849 | bfd* abfd; |
850 | ||
851 | /* The CU of the DIE we are parsing. */ | |
852 | struct dwarf2_cu *cu; | |
853 | ||
80626a55 | 854 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
855 | struct dwo_file *dwo_file; |
856 | ||
dee91e82 | 857 | /* The section the die comes from. |
3019eac3 | 858 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
859 | struct dwarf2_section_info *die_section; |
860 | ||
861 | /* die_section->buffer. */ | |
d521ce57 | 862 | const gdb_byte *buffer; |
f664829e DE |
863 | |
864 | /* The end of the buffer. */ | |
865 | const gdb_byte *buffer_end; | |
a2ce51a0 | 866 | |
685af9cd TT |
867 | /* The abbreviation table to use when reading the DIEs. */ |
868 | struct abbrev_table *abbrev_table; | |
93311388 DE |
869 | }; |
870 | ||
c0ab21c2 TT |
871 | /* A subclass of die_reader_specs that holds storage and has complex |
872 | constructor and destructor behavior. */ | |
873 | ||
874 | class cutu_reader : public die_reader_specs | |
875 | { | |
876 | public: | |
877 | ||
878 | cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
879 | struct abbrev_table *abbrev_table, | |
6751ebae | 880 | int use_existing_cu, |
c0ab21c2 TT |
881 | bool skip_partial); |
882 | ||
883 | explicit cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
884 | struct dwarf2_cu *parent_cu = nullptr, | |
885 | struct dwo_file *dwo_file = nullptr); | |
886 | ||
c0ab21c2 TT |
887 | DISABLE_COPY_AND_ASSIGN (cutu_reader); |
888 | ||
889 | const gdb_byte *info_ptr = nullptr; | |
890 | struct die_info *comp_unit_die = nullptr; | |
c0ab21c2 TT |
891 | bool dummy_p = false; |
892 | ||
6751ebae TT |
893 | /* Release the new CU, putting it on the chain. This cannot be done |
894 | for dummy CUs. */ | |
895 | void keep (); | |
896 | ||
c0ab21c2 TT |
897 | private: |
898 | void init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, | |
6751ebae | 899 | int use_existing_cu); |
c0ab21c2 TT |
900 | |
901 | struct dwarf2_per_cu_data *m_this_cu; | |
c0ab21c2 TT |
902 | std::unique_ptr<dwarf2_cu> m_new_cu; |
903 | ||
904 | /* The ordinary abbreviation table. */ | |
905 | abbrev_table_up m_abbrev_table_holder; | |
906 | ||
907 | /* The DWO abbreviation table. */ | |
908 | abbrev_table_up m_dwo_abbrev_table; | |
909 | }; | |
dee91e82 | 910 | |
c906108c | 911 | /* When we construct a partial symbol table entry we only |
0963b4bd | 912 | need this much information. */ |
6f06d47b | 913 | struct partial_die_info : public allocate_on_obstack |
c906108c | 914 | { |
6f06d47b YQ |
915 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
916 | ||
917 | /* Disable assign but still keep copy ctor, which is needed | |
918 | load_partial_dies. */ | |
919 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
920 | ||
52356b79 YQ |
921 | /* Adjust the partial die before generating a symbol for it. This |
922 | function may set the is_external flag or change the DIE's | |
923 | name. */ | |
924 | void fixup (struct dwarf2_cu *cu); | |
925 | ||
48fbe735 YQ |
926 | /* Read a minimal amount of information into the minimal die |
927 | structure. */ | |
928 | const gdb_byte *read (const struct die_reader_specs *reader, | |
929 | const struct abbrev_info &abbrev, | |
930 | const gdb_byte *info_ptr); | |
931 | ||
72bf9492 | 932 | /* Offset of this DIE. */ |
6f06d47b | 933 | const sect_offset sect_off; |
72bf9492 DJ |
934 | |
935 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 936 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 937 | |
72bf9492 | 938 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
939 | const unsigned int has_children : 1; |
940 | ||
72bf9492 DJ |
941 | unsigned int is_external : 1; |
942 | unsigned int is_declaration : 1; | |
943 | unsigned int has_type : 1; | |
944 | unsigned int has_specification : 1; | |
945 | unsigned int has_pc_info : 1; | |
481860b3 | 946 | unsigned int may_be_inlined : 1; |
72bf9492 | 947 | |
0c1b455e TT |
948 | /* This DIE has been marked DW_AT_main_subprogram. */ |
949 | unsigned int main_subprogram : 1; | |
950 | ||
72bf9492 DJ |
951 | /* Flag set if the SCOPE field of this structure has been |
952 | computed. */ | |
953 | unsigned int scope_set : 1; | |
954 | ||
fa4028e9 JB |
955 | /* Flag set if the DIE has a byte_size attribute. */ |
956 | unsigned int has_byte_size : 1; | |
957 | ||
ff908ebf AW |
958 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
959 | unsigned int has_const_value : 1; | |
960 | ||
98bfdba5 PA |
961 | /* Flag set if any of the DIE's children are template arguments. */ |
962 | unsigned int has_template_arguments : 1; | |
963 | ||
52356b79 | 964 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
965 | unsigned int fixup_called : 1; |
966 | ||
36586728 TT |
967 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
968 | unsigned int is_dwz : 1; | |
969 | ||
970 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
971 | unsigned int spec_is_dwz : 1; | |
972 | ||
72bf9492 | 973 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 974 | sometimes a default name for unnamed DIEs. */ |
6f06d47b | 975 | const char *name = nullptr; |
72bf9492 | 976 | |
abc72ce4 | 977 | /* The linkage name, if present. */ |
6f06d47b | 978 | const char *linkage_name = nullptr; |
abc72ce4 | 979 | |
72bf9492 DJ |
980 | /* The scope to prepend to our children. This is generally |
981 | allocated on the comp_unit_obstack, so will disappear | |
982 | when this compilation unit leaves the cache. */ | |
6f06d47b | 983 | const char *scope = nullptr; |
72bf9492 | 984 | |
95554aad TT |
985 | /* Some data associated with the partial DIE. The tag determines |
986 | which field is live. */ | |
987 | union | |
988 | { | |
989 | /* The location description associated with this DIE, if any. */ | |
990 | struct dwarf_block *locdesc; | |
991 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 992 | sect_offset sect_off; |
6f06d47b | 993 | } d {}; |
72bf9492 DJ |
994 | |
995 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
996 | CORE_ADDR lowpc = 0; |
997 | CORE_ADDR highpc = 0; | |
72bf9492 | 998 | |
93311388 | 999 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1000 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1001 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1002 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1003 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1004 | |
1005 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1006 | DW_AT_specification (or DW_AT_abstract_origin or | |
1007 | DW_AT_extension). */ | |
6f06d47b | 1008 | sect_offset spec_offset {}; |
72bf9492 DJ |
1009 | |
1010 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1011 | if any. */ | |
6f06d47b YQ |
1012 | struct partial_die_info *die_parent = nullptr; |
1013 | struct partial_die_info *die_child = nullptr; | |
1014 | struct partial_die_info *die_sibling = nullptr; | |
1015 | ||
1016 | friend struct partial_die_info * | |
1017 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1018 | ||
1019 | private: | |
1020 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1021 | partial_die_info (sect_offset sect_off) | |
1022 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1023 | { | |
1024 | } | |
1025 | ||
1026 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1027 | int has_children_) | |
1028 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1029 | { | |
1030 | is_external = 0; | |
1031 | is_declaration = 0; | |
1032 | has_type = 0; | |
1033 | has_specification = 0; | |
1034 | has_pc_info = 0; | |
1035 | may_be_inlined = 0; | |
1036 | main_subprogram = 0; | |
1037 | scope_set = 0; | |
1038 | has_byte_size = 0; | |
1039 | has_const_value = 0; | |
1040 | has_template_arguments = 0; | |
1041 | fixup_called = 0; | |
1042 | is_dwz = 0; | |
1043 | spec_is_dwz = 0; | |
1044 | } | |
c906108c SS |
1045 | }; |
1046 | ||
c906108c SS |
1047 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1048 | but this would require a corresponding change in unpack_field_as_long | |
1049 | and friends. */ | |
1050 | static int bits_per_byte = 8; | |
1051 | ||
2ddeaf8a TT |
1052 | /* When reading a variant or variant part, we track a bit more |
1053 | information about the field, and store it in an object of this | |
1054 | type. */ | |
1055 | ||
1056 | struct variant_field | |
1057 | { | |
1058 | /* If we see a DW_TAG_variant, then this will be the discriminant | |
1059 | value. */ | |
1060 | ULONGEST discriminant_value; | |
1061 | /* If we see a DW_TAG_variant, then this will be set if this is the | |
1062 | default branch. */ | |
1063 | bool default_branch; | |
1064 | /* While reading a DW_TAG_variant_part, this will be set if this | |
1065 | field is the discriminant. */ | |
1066 | bool is_discriminant; | |
1067 | }; | |
1068 | ||
52059ffd TT |
1069 | struct nextfield |
1070 | { | |
be2daae6 TT |
1071 | int accessibility = 0; |
1072 | int virtuality = 0; | |
2ddeaf8a | 1073 | /* Extra information to describe a variant or variant part. */ |
be2daae6 TT |
1074 | struct variant_field variant {}; |
1075 | struct field field {}; | |
52059ffd TT |
1076 | }; |
1077 | ||
1078 | struct fnfieldlist | |
1079 | { | |
be2daae6 TT |
1080 | const char *name = nullptr; |
1081 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1082 | }; |
1083 | ||
c906108c SS |
1084 | /* The routines that read and process dies for a C struct or C++ class |
1085 | pass lists of data member fields and lists of member function fields | |
1086 | in an instance of a field_info structure, as defined below. */ | |
1087 | struct field_info | |
c5aa993b | 1088 | { |
0963b4bd | 1089 | /* List of data member and baseclasses fields. */ |
be2daae6 TT |
1090 | std::vector<struct nextfield> fields; |
1091 | std::vector<struct nextfield> baseclasses; | |
c906108c | 1092 | |
85102364 | 1093 | /* Set if the accessibility of one of the fields is not public. */ |
be2daae6 | 1094 | int non_public_fields = 0; |
c906108c | 1095 | |
c5aa993b JM |
1096 | /* Member function fieldlist array, contains name of possibly overloaded |
1097 | member function, number of overloaded member functions and a pointer | |
1098 | to the head of the member function field chain. */ | |
be2daae6 | 1099 | std::vector<struct fnfieldlist> fnfieldlists; |
98751a41 JK |
1100 | |
1101 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1102 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
be2daae6 | 1103 | std::vector<struct decl_field> typedef_field_list; |
883fd55a KS |
1104 | |
1105 | /* Nested types defined by this class and the number of elements in this | |
1106 | list. */ | |
be2daae6 | 1107 | std::vector<struct decl_field> nested_types_list; |
317f7127 TT |
1108 | |
1109 | /* Return the total number of fields (including baseclasses). */ | |
1110 | int nfields () const | |
1111 | { | |
1112 | return fields.size () + baseclasses.size (); | |
1113 | } | |
c5aa993b | 1114 | }; |
c906108c | 1115 | |
ae038cb0 DJ |
1116 | /* Loaded secondary compilation units are kept in memory until they |
1117 | have not been referenced for the processing of this many | |
1118 | compilation units. Set this to zero to disable caching. Cache | |
1119 | sizes of up to at least twenty will improve startup time for | |
1120 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1121 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1122 | static void |
b4f54984 DE |
1123 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1124 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1125 | { |
3e43a32a | 1126 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1127 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1128 | value); |
1129 | } | |
4390d890 | 1130 | \f |
c906108c SS |
1131 | /* local function prototypes */ |
1132 | ||
918dd910 JK |
1133 | static void dwarf2_find_base_address (struct die_info *die, |
1134 | struct dwarf2_cu *cu); | |
1135 | ||
891813be | 1136 | static dwarf2_psymtab *create_partial_symtab |
0018ea6f DE |
1137 | (struct dwarf2_per_cu_data *per_cu, const char *name); |
1138 | ||
f1902523 JK |
1139 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1140 | const gdb_byte *info_ptr, | |
3e225074 | 1141 | struct die_info *type_unit_die); |
f1902523 | 1142 | |
ed2dc618 SM |
1143 | static void dwarf2_build_psymtabs_hard |
1144 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
c906108c | 1145 | |
72bf9492 DJ |
1146 | static void scan_partial_symbols (struct partial_die_info *, |
1147 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1148 | int, struct dwarf2_cu *); |
c906108c | 1149 | |
72bf9492 DJ |
1150 | static void add_partial_symbol (struct partial_die_info *, |
1151 | struct dwarf2_cu *); | |
63d06c5c | 1152 | |
72bf9492 DJ |
1153 | static void add_partial_namespace (struct partial_die_info *pdi, |
1154 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1155 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1156 | |
5d7cb8df | 1157 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1158 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1159 | struct dwarf2_cu *cu); |
1160 | ||
72bf9492 DJ |
1161 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1162 | struct dwarf2_cu *cu); | |
91c24f0a | 1163 | |
bc30ff58 JB |
1164 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1165 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1166 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1167 | |
d521ce57 | 1168 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1169 | |
dee91e82 | 1170 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1171 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1172 | |
fb816e8b TV |
1173 | /* A pair of partial_die_info and compilation unit. */ |
1174 | struct cu_partial_die_info | |
1175 | { | |
1176 | /* The compilation unit of the partial_die_info. */ | |
1177 | struct dwarf2_cu *cu; | |
1178 | /* A partial_die_info. */ | |
1179 | struct partial_die_info *pdi; | |
122cf0f2 AB |
1180 | |
1181 | cu_partial_die_info (struct dwarf2_cu *cu, struct partial_die_info *pdi) | |
1182 | : cu (cu), | |
1183 | pdi (pdi) | |
405feb71 | 1184 | { /* Nothing. */ } |
122cf0f2 AB |
1185 | |
1186 | private: | |
1187 | cu_partial_die_info () = delete; | |
fb816e8b TV |
1188 | }; |
1189 | ||
122cf0f2 AB |
1190 | static const struct cu_partial_die_info find_partial_die (sect_offset, int, |
1191 | struct dwarf2_cu *); | |
72bf9492 | 1192 | |
d521ce57 TT |
1193 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1194 | struct attribute *, struct attr_abbrev *, | |
18a8505e AT |
1195 | const gdb_byte *, bool *need_reprocess); |
1196 | ||
1197 | static void read_attribute_reprocess (const struct die_reader_specs *reader, | |
1198 | struct attribute *attr); | |
1199 | ||
1200 | static CORE_ADDR read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index); | |
a8329558 | 1201 | |
ed2dc618 SM |
1202 | static sect_offset read_abbrev_offset |
1203 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
1204 | struct dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1205 | |
ed2dc618 SM |
1206 | static const char *read_indirect_string |
1207 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1208 | const struct comp_unit_head *, unsigned int *); | |
4bdf3d34 | 1209 | |
ed2dc618 | 1210 | static const char *read_indirect_string_at_offset |
4f44ae6c | 1211 | (struct dwarf2_per_objfile *dwarf2_per_objfile, LONGEST str_offset); |
927aa2e7 | 1212 | |
d521ce57 TT |
1213 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1214 | const gdb_byte *, | |
3019eac3 DE |
1215 | unsigned int *); |
1216 | ||
18a8505e AT |
1217 | static const char *read_dwo_str_index (const struct die_reader_specs *reader, |
1218 | ULONGEST str_index); | |
1219 | ||
1220 | static const char *read_stub_str_index (struct dwarf2_cu *cu, | |
1221 | ULONGEST str_index); | |
3019eac3 | 1222 | |
e142c38c | 1223 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1224 | |
e142c38c DJ |
1225 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1226 | struct dwarf2_cu *); | |
c906108c | 1227 | |
7d45c7c3 KB |
1228 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1229 | struct dwarf2_cu *cu); | |
1230 | ||
a084a2a6 AT |
1231 | static const char *dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu); |
1232 | ||
05cf31d1 JB |
1233 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1234 | struct dwarf2_cu *cu); | |
1235 | ||
e142c38c | 1236 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1237 | |
e142c38c | 1238 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1239 | struct dwarf2_cu **); |
63d06c5c | 1240 | |
9c541725 | 1241 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1242 | struct dwarf2_cu *cu); |
debd256d | 1243 | |
f3f5162e | 1244 | static void dwarf_decode_lines (struct line_header *, const char *, |
891813be | 1245 | struct dwarf2_cu *, dwarf2_psymtab *, |
527f3840 | 1246 | CORE_ADDR, int decode_mapping); |
c906108c | 1247 | |
804d2729 TT |
1248 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1249 | const char *); | |
c906108c | 1250 | |
a14ed312 | 1251 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1252 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1253 | |
ff39bb5e | 1254 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1255 | struct dwarf2_cu *); |
c906108c | 1256 | |
ff39bb5e | 1257 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1258 | struct type *type, |
1259 | const char *name, | |
1260 | struct obstack *obstack, | |
12df843f | 1261 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1262 | const gdb_byte **bytes, |
98bfdba5 | 1263 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1264 | |
e7c27a73 | 1265 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1266 | |
b4ba55a1 JB |
1267 | static int need_gnat_info (struct dwarf2_cu *); |
1268 | ||
3e43a32a MS |
1269 | static struct type *die_descriptive_type (struct die_info *, |
1270 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1271 | |
1272 | static void set_descriptive_type (struct type *, struct die_info *, | |
1273 | struct dwarf2_cu *); | |
1274 | ||
e7c27a73 DJ |
1275 | static struct type *die_containing_type (struct die_info *, |
1276 | struct dwarf2_cu *); | |
c906108c | 1277 | |
ff39bb5e | 1278 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1279 | struct dwarf2_cu *); |
c906108c | 1280 | |
f792889a | 1281 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1282 | |
673bfd45 DE |
1283 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1284 | ||
0d5cff50 | 1285 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1286 | |
6e70227d | 1287 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1288 | const char *suffix, int physname, |
1289 | struct dwarf2_cu *cu); | |
63d06c5c | 1290 | |
e7c27a73 | 1291 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1292 | |
348e048f DE |
1293 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1294 | ||
e7c27a73 | 1295 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1296 | |
e7c27a73 | 1297 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1298 | |
96408a79 SA |
1299 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1300 | ||
71a3c369 TT |
1301 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1302 | ||
ff013f42 | 1303 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
891813be | 1304 | struct dwarf2_cu *, dwarf2_psymtab *); |
ff013f42 | 1305 | |
3a2b436a | 1306 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1307 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1308 | enum pc_bounds_kind |
1309 | { | |
e385593e | 1310 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1311 | PC_BOUNDS_NOT_PRESENT, |
1312 | ||
e385593e JK |
1313 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1314 | were present but they do not form a valid range of PC addresses. */ | |
1315 | PC_BOUNDS_INVALID, | |
1316 | ||
3a2b436a JK |
1317 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1318 | PC_BOUNDS_RANGES, | |
1319 | ||
1320 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1321 | PC_BOUNDS_HIGH_LOW, | |
1322 | }; | |
1323 | ||
1324 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1325 | CORE_ADDR *, CORE_ADDR *, | |
1326 | struct dwarf2_cu *, | |
891813be | 1327 | dwarf2_psymtab *); |
c906108c | 1328 | |
fae299cd DC |
1329 | static void get_scope_pc_bounds (struct die_info *, |
1330 | CORE_ADDR *, CORE_ADDR *, | |
1331 | struct dwarf2_cu *); | |
1332 | ||
801e3a5b JB |
1333 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1334 | CORE_ADDR, struct dwarf2_cu *); | |
1335 | ||
a14ed312 | 1336 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1337 | struct dwarf2_cu *); |
c906108c | 1338 | |
a14ed312 | 1339 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1340 | struct type *, struct dwarf2_cu *); |
c906108c | 1341 | |
a14ed312 | 1342 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1343 | struct die_info *, struct type *, |
e7c27a73 | 1344 | struct dwarf2_cu *); |
c906108c | 1345 | |
a14ed312 | 1346 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1347 | struct type *, |
1348 | struct dwarf2_cu *); | |
c906108c | 1349 | |
134d01f1 | 1350 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1351 | |
e7c27a73 | 1352 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1353 | |
e7c27a73 | 1354 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1355 | |
5d7cb8df JK |
1356 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1357 | ||
804d2729 | 1358 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1359 | |
27aa8d6a SW |
1360 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1361 | ||
74921315 KS |
1362 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1363 | ||
f55ee35c JK |
1364 | static struct type *read_module_type (struct die_info *die, |
1365 | struct dwarf2_cu *cu); | |
1366 | ||
38d518c9 | 1367 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1368 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1369 | |
134d01f1 | 1370 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1371 | |
e7c27a73 | 1372 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1373 | |
6e70227d | 1374 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1375 | struct dwarf2_cu *); |
1376 | ||
bf6af496 | 1377 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1378 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1379 | struct die_info *); |
639d11d3 | 1380 | |
dee91e82 | 1381 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1382 | const gdb_byte *info_ptr, |
1383 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1384 | struct die_info *parent); |
1385 | ||
d521ce57 TT |
1386 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1387 | struct die_info **, const gdb_byte *, | |
3e225074 | 1388 | int); |
3019eac3 | 1389 | |
d521ce57 | 1390 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
3e225074 | 1391 | struct die_info **, const gdb_byte *); |
93311388 | 1392 | |
e7c27a73 | 1393 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1394 | |
15d034d0 | 1395 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
be1e3d3e | 1396 | struct objfile *); |
71c25dea | 1397 | |
15d034d0 | 1398 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1399 | |
15d034d0 | 1400 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1401 | struct die_info *die, |
1402 | struct dwarf2_cu *cu); | |
1403 | ||
ca69b9e6 DE |
1404 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1405 | struct dwarf2_cu *cu); | |
1406 | ||
e142c38c | 1407 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1408 | struct dwarf2_cu **); |
9219021c | 1409 | |
d97bc12b DE |
1410 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1411 | ||
1412 | static void dump_die_for_error (struct die_info *); | |
1413 | ||
1414 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1415 | struct die_info *); | |
c906108c | 1416 | |
d97bc12b | 1417 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1418 | |
51545339 | 1419 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1420 | struct dwarf2_cu *); |
c906108c | 1421 | |
348e048f | 1422 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1423 | const struct attribute *, |
348e048f DE |
1424 | struct dwarf2_cu **); |
1425 | ||
10b3939b | 1426 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1427 | const struct attribute *, |
f2f0e013 | 1428 | struct dwarf2_cu **); |
c906108c | 1429 | |
348e048f | 1430 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1431 | const struct attribute *, |
348e048f DE |
1432 | struct dwarf2_cu **); |
1433 | ||
ac9ec31b DE |
1434 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1435 | struct dwarf2_cu *); | |
1436 | ||
1437 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1438 | const struct attribute *, |
ac9ec31b DE |
1439 | struct dwarf2_cu *); |
1440 | ||
e5fe5e75 | 1441 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1442 | |
52dc124a | 1443 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1444 | |
63e43d3a PMR |
1445 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1446 | struct die_info *die, struct dwarf2_cu *cu, | |
9a49df9d | 1447 | struct dynamic_prop *prop, struct type *type); |
63e43d3a | 1448 | |
c906108c SS |
1449 | /* memory allocation interface */ |
1450 | ||
7b5a2f43 | 1451 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1452 | |
b60c80d6 | 1453 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1454 | |
43f3e411 | 1455 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1456 | |
8cf6f0b1 TT |
1457 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1458 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1459 | const struct attribute *attr); |
8cf6f0b1 | 1460 | |
ff39bb5e | 1461 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1462 | struct symbol *sym, |
f1e6e072 TT |
1463 | struct dwarf2_cu *cu, |
1464 | int is_block); | |
4c2df51b | 1465 | |
d521ce57 TT |
1466 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1467 | const gdb_byte *info_ptr, | |
1468 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1469 | |
72bf9492 DJ |
1470 | static hashval_t partial_die_hash (const void *item); |
1471 | ||
1472 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1473 | ||
ae038cb0 | 1474 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 SM |
1475 | (sect_offset sect_off, unsigned int offset_in_dwz, |
1476 | struct dwarf2_per_objfile *dwarf2_per_objfile); | |
ae038cb0 | 1477 | |
9816fde3 | 1478 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1479 | struct die_info *comp_unit_die, |
1480 | enum language pretend_language); | |
93311388 | 1481 | |
ed2dc618 | 1482 | static void age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1483 | |
dee91e82 | 1484 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1485 | |
f792889a DJ |
1486 | static struct type *set_die_type (struct die_info *, struct type *, |
1487 | struct dwarf2_cu *); | |
1c379e20 | 1488 | |
ed2dc618 | 1489 | static void create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1490 | |
ed2dc618 | 1491 | static int create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
1fd400ff | 1492 | |
58f0c718 | 1493 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, bool, |
95554aad | 1494 | enum language); |
10b3939b | 1495 | |
95554aad TT |
1496 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1497 | enum language); | |
10b3939b | 1498 | |
f4dc4d17 DE |
1499 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1500 | enum language); | |
1501 | ||
10b3939b DJ |
1502 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1503 | struct dwarf2_per_cu_data *); | |
1504 | ||
ae038cb0 DJ |
1505 | static void dwarf2_mark (struct dwarf2_cu *); |
1506 | ||
1507 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1508 | ||
b64f50a1 | 1509 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1510 | struct dwarf2_per_cu_data *); |
673bfd45 | 1511 | |
f792889a | 1512 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1513 | |
95554aad TT |
1514 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1515 | enum language pretend_language); | |
1516 | ||
ed2dc618 | 1517 | static void process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile); |
9291a0cd | 1518 | |
b303c6f6 AB |
1519 | /* Class, the destructor of which frees all allocated queue entries. This |
1520 | will only have work to do if an error was thrown while processing the | |
1521 | dwarf. If no error was thrown then the queue entries should have all | |
1522 | been processed, and freed, as we went along. */ | |
1523 | ||
1524 | class dwarf2_queue_guard | |
1525 | { | |
1526 | public: | |
39856def TT |
1527 | explicit dwarf2_queue_guard (dwarf2_per_objfile *per_objfile) |
1528 | : m_per_objfile (per_objfile) | |
1529 | { | |
1530 | } | |
b303c6f6 AB |
1531 | |
1532 | /* Free any entries remaining on the queue. There should only be | |
1533 | entries left if we hit an error while processing the dwarf. */ | |
1534 | ~dwarf2_queue_guard () | |
1535 | { | |
39856def TT |
1536 | /* Ensure that no memory is allocated by the queue. */ |
1537 | std::queue<dwarf2_queue_item> empty; | |
1538 | std::swap (m_per_objfile->queue, empty); | |
1539 | } | |
b303c6f6 | 1540 | |
39856def | 1541 | DISABLE_COPY_AND_ASSIGN (dwarf2_queue_guard); |
b303c6f6 | 1542 | |
39856def TT |
1543 | private: |
1544 | dwarf2_per_objfile *m_per_objfile; | |
b303c6f6 AB |
1545 | }; |
1546 | ||
39856def TT |
1547 | dwarf2_queue_item::~dwarf2_queue_item () |
1548 | { | |
1549 | /* Anything still marked queued is likely to be in an | |
1550 | inconsistent state, so discard it. */ | |
1551 | if (per_cu->queued) | |
1552 | { | |
1553 | if (per_cu->cu != NULL) | |
1554 | free_one_cached_comp_unit (per_cu); | |
1555 | per_cu->queued = 0; | |
1556 | } | |
1557 | } | |
1558 | ||
d721ba37 PA |
1559 | /* The return type of find_file_and_directory. Note, the enclosed |
1560 | string pointers are only valid while this object is valid. */ | |
1561 | ||
1562 | struct file_and_directory | |
1563 | { | |
1564 | /* The filename. This is never NULL. */ | |
1565 | const char *name; | |
1566 | ||
1567 | /* The compilation directory. NULL if not known. If we needed to | |
1568 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1569 | points directly to the DW_AT_comp_dir string attribute owned by | |
1570 | the obstack that owns the DIE. */ | |
1571 | const char *comp_dir; | |
1572 | ||
1573 | /* If we needed to build a new string for comp_dir, this is what | |
1574 | owns the storage. */ | |
1575 | std::string comp_dir_storage; | |
1576 | }; | |
1577 | ||
1578 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1579 | struct dwarf2_cu *cu); | |
9291a0cd | 1580 | |
298e9637 | 1581 | static htab_up allocate_signatured_type_table (); |
1fd400ff | 1582 | |
298e9637 | 1583 | static htab_up allocate_dwo_unit_table (); |
3019eac3 | 1584 | |
57d63ce2 | 1585 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
ed2dc618 SM |
1586 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
1587 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 1588 | ULONGEST signature, int is_debug_types); |
a2ce51a0 | 1589 | |
ed2dc618 SM |
1590 | static struct dwp_file *get_dwp_file |
1591 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
a2ce51a0 | 1592 | |
3019eac3 | 1593 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 1594 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
1595 | |
1596 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 1597 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 1598 | |
89e63ee4 DE |
1599 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
1600 | ||
263db9a1 TT |
1601 | /* A unique pointer to a dwo_file. */ |
1602 | ||
51ac9db5 | 1603 | typedef std::unique_ptr<struct dwo_file> dwo_file_up; |
263db9a1 | 1604 | |
ed2dc618 | 1605 | static void process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile); |
95554aad | 1606 | |
1b80a9fa | 1607 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1608 | |
1609 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1610 | \f |
1611 | /* Various complaints about symbol reading that don't abort the process. */ | |
1612 | ||
4390d890 DE |
1613 | static void |
1614 | dwarf2_debug_line_missing_file_complaint (void) | |
1615 | { | |
b98664d3 | 1616 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
1617 | } |
1618 | ||
1619 | static void | |
1620 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1621 | { | |
b98664d3 | 1622 | complaint (_(".debug_line section has line " |
4390d890 DE |
1623 | "program sequence without an end")); |
1624 | } | |
1625 | ||
1626 | static void | |
1627 | dwarf2_complex_location_expr_complaint (void) | |
1628 | { | |
b98664d3 | 1629 | complaint (_("location expression too complex")); |
4390d890 DE |
1630 | } |
1631 | ||
1632 | static void | |
1633 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1634 | int arg3) | |
1635 | { | |
b98664d3 | 1636 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
1637 | arg1, arg2, arg3); |
1638 | } | |
1639 | ||
4390d890 DE |
1640 | static void |
1641 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1642 | { | |
b98664d3 | 1643 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
1644 | arg1, arg2); |
1645 | } | |
527f3840 JK |
1646 | |
1647 | /* Hash function for line_header_hash. */ | |
1648 | ||
1649 | static hashval_t | |
1650 | line_header_hash (const struct line_header *ofs) | |
1651 | { | |
9c541725 | 1652 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
1653 | } |
1654 | ||
1655 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
1656 | ||
1657 | static hashval_t | |
1658 | line_header_hash_voidp (const void *item) | |
1659 | { | |
9a3c8263 | 1660 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
1661 | |
1662 | return line_header_hash (ofs); | |
1663 | } | |
1664 | ||
1665 | /* Equality function for line_header_hash. */ | |
1666 | ||
1667 | static int | |
1668 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
1669 | { | |
9a3c8263 SM |
1670 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
1671 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 1672 | |
9c541725 | 1673 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
1674 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
1675 | } | |
1676 | ||
4390d890 | 1677 | \f |
9291a0cd | 1678 | |
330cdd98 PA |
1679 | /* See declaration. */ |
1680 | ||
1681 | dwarf2_per_objfile::dwarf2_per_objfile (struct objfile *objfile_, | |
4b610737 TT |
1682 | const dwarf2_debug_sections *names, |
1683 | bool can_copy_) | |
1684 | : objfile (objfile_), | |
1685 | can_copy (can_copy_) | |
330cdd98 PA |
1686 | { |
1687 | if (names == NULL) | |
1688 | names = &dwarf2_elf_names; | |
1689 | ||
1690 | bfd *obfd = objfile->obfd; | |
1691 | ||
1692 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) | |
1693 | locate_sections (obfd, sec, *names); | |
1694 | } | |
1695 | ||
1696 | dwarf2_per_objfile::~dwarf2_per_objfile () | |
1697 | { | |
1698 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
1699 | free_cached_comp_units (); | |
1700 | ||
b76e467d | 1701 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
ae640021 | 1702 | per_cu->imported_symtabs_free (); |
fc8e7e75 | 1703 | |
b2bdb8cf | 1704 | for (signatured_type *sig_type : all_type_units) |
ae640021 | 1705 | sig_type->per_cu.imported_symtabs_free (); |
fc8e7e75 | 1706 | |
330cdd98 PA |
1707 | /* Everything else should be on the objfile obstack. */ |
1708 | } | |
1709 | ||
1710 | /* See declaration. */ | |
1711 | ||
1712 | void | |
1713 | dwarf2_per_objfile::free_cached_comp_units () | |
1714 | { | |
1715 | dwarf2_per_cu_data *per_cu = read_in_chain; | |
1716 | dwarf2_per_cu_data **last_chain = &read_in_chain; | |
1717 | while (per_cu != NULL) | |
1718 | { | |
1719 | dwarf2_per_cu_data *next_cu = per_cu->cu->read_in_chain; | |
1720 | ||
fcd3b13d | 1721 | delete per_cu->cu; |
330cdd98 PA |
1722 | *last_chain = next_cu; |
1723 | per_cu = next_cu; | |
1724 | } | |
1725 | } | |
1726 | ||
11ed8cad TT |
1727 | /* A helper class that calls free_cached_comp_units on |
1728 | destruction. */ | |
1729 | ||
1730 | class free_cached_comp_units | |
1731 | { | |
1732 | public: | |
1733 | ||
1734 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
1735 | : m_per_objfile (per_objfile) | |
1736 | { | |
1737 | } | |
1738 | ||
1739 | ~free_cached_comp_units () | |
1740 | { | |
1741 | m_per_objfile->free_cached_comp_units (); | |
1742 | } | |
1743 | ||
1744 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
1745 | ||
1746 | private: | |
1747 | ||
1748 | dwarf2_per_objfile *m_per_objfile; | |
1749 | }; | |
1750 | ||
c906108c | 1751 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1752 | information and return true if we have enough to do something. |
1753 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
4b610737 TT |
1754 | ELF names are used. CAN_COPY is true for formats where symbol |
1755 | interposition is possible and so symbol values must follow copy | |
1756 | relocation rules. */ | |
c906108c SS |
1757 | |
1758 | int | |
251d32d9 | 1759 | dwarf2_has_info (struct objfile *objfile, |
4b610737 TT |
1760 | const struct dwarf2_debug_sections *names, |
1761 | bool can_copy) | |
c906108c | 1762 | { |
97cbe998 SDJ |
1763 | if (objfile->flags & OBJF_READNEVER) |
1764 | return 0; | |
1765 | ||
ed2dc618 SM |
1766 | struct dwarf2_per_objfile *dwarf2_per_objfile |
1767 | = get_dwarf2_per_objfile (objfile); | |
1768 | ||
1769 | if (dwarf2_per_objfile == NULL) | |
5bfd760d | 1770 | dwarf2_per_objfile = dwarf2_objfile_data_key.emplace (objfile, objfile, |
4b610737 TT |
1771 | names, |
1772 | can_copy); | |
5bfd760d | 1773 | |
73869dc2 | 1774 | return (!dwarf2_per_objfile->info.is_virtual |
049412e3 | 1775 | && dwarf2_per_objfile->info.s.section != NULL |
73869dc2 | 1776 | && !dwarf2_per_objfile->abbrev.is_virtual |
049412e3 | 1777 | && dwarf2_per_objfile->abbrev.s.section != NULL); |
73869dc2 DE |
1778 | } |
1779 | ||
251d32d9 TG |
1780 | /* When loading sections, we look either for uncompressed section or for |
1781 | compressed section names. */ | |
233a11ab CS |
1782 | |
1783 | static int | |
251d32d9 TG |
1784 | section_is_p (const char *section_name, |
1785 | const struct dwarf2_section_names *names) | |
233a11ab | 1786 | { |
251d32d9 TG |
1787 | if (names->normal != NULL |
1788 | && strcmp (section_name, names->normal) == 0) | |
1789 | return 1; | |
1790 | if (names->compressed != NULL | |
1791 | && strcmp (section_name, names->compressed) == 0) | |
1792 | return 1; | |
1793 | return 0; | |
233a11ab CS |
1794 | } |
1795 | ||
330cdd98 | 1796 | /* See declaration. */ |
c906108c | 1797 | |
330cdd98 PA |
1798 | void |
1799 | dwarf2_per_objfile::locate_sections (bfd *abfd, asection *sectp, | |
1800 | const dwarf2_debug_sections &names) | |
c906108c | 1801 | { |
fd361982 | 1802 | flagword aflag = bfd_section_flags (sectp); |
251d32d9 | 1803 | |
dc7650b8 JK |
1804 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
1805 | { | |
1806 | } | |
950b7495 KS |
1807 | else if (elf_section_data (sectp)->this_hdr.sh_size |
1808 | > bfd_get_file_size (abfd)) | |
1809 | { | |
1810 | bfd_size_type size = elf_section_data (sectp)->this_hdr.sh_size; | |
1811 | warning (_("Discarding section %s which has a section size (%s" | |
1812 | ") larger than the file size [in module %s]"), | |
1813 | bfd_section_name (sectp), phex_nz (size, sizeof (size)), | |
1814 | bfd_get_filename (abfd)); | |
1815 | } | |
330cdd98 | 1816 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 1817 | { |
330cdd98 | 1818 | this->info.s.section = sectp; |
fd361982 | 1819 | this->info.size = bfd_section_size (sectp); |
c906108c | 1820 | } |
330cdd98 | 1821 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 1822 | { |
330cdd98 | 1823 | this->abbrev.s.section = sectp; |
fd361982 | 1824 | this->abbrev.size = bfd_section_size (sectp); |
c906108c | 1825 | } |
330cdd98 | 1826 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 1827 | { |
330cdd98 | 1828 | this->line.s.section = sectp; |
fd361982 | 1829 | this->line.size = bfd_section_size (sectp); |
c906108c | 1830 | } |
330cdd98 | 1831 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 1832 | { |
330cdd98 | 1833 | this->loc.s.section = sectp; |
fd361982 | 1834 | this->loc.size = bfd_section_size (sectp); |
c906108c | 1835 | } |
330cdd98 | 1836 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 1837 | { |
330cdd98 | 1838 | this->loclists.s.section = sectp; |
fd361982 | 1839 | this->loclists.size = bfd_section_size (sectp); |
43988095 | 1840 | } |
330cdd98 | 1841 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 1842 | { |
330cdd98 | 1843 | this->macinfo.s.section = sectp; |
fd361982 | 1844 | this->macinfo.size = bfd_section_size (sectp); |
c906108c | 1845 | } |
330cdd98 | 1846 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 1847 | { |
330cdd98 | 1848 | this->macro.s.section = sectp; |
fd361982 | 1849 | this->macro.size = bfd_section_size (sectp); |
cf2c3c16 | 1850 | } |
330cdd98 | 1851 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 1852 | { |
330cdd98 | 1853 | this->str.s.section = sectp; |
fd361982 | 1854 | this->str.size = bfd_section_size (sectp); |
c906108c | 1855 | } |
18a8505e AT |
1856 | else if (section_is_p (sectp->name, &names.str_offsets)) |
1857 | { | |
1858 | this->str_offsets.s.section = sectp; | |
1859 | this->str_offsets.size = bfd_section_size (sectp); | |
1860 | } | |
330cdd98 | 1861 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 1862 | { |
330cdd98 | 1863 | this->line_str.s.section = sectp; |
fd361982 | 1864 | this->line_str.size = bfd_section_size (sectp); |
43988095 | 1865 | } |
330cdd98 | 1866 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 1867 | { |
330cdd98 | 1868 | this->addr.s.section = sectp; |
fd361982 | 1869 | this->addr.size = bfd_section_size (sectp); |
3019eac3 | 1870 | } |
330cdd98 | 1871 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 1872 | { |
330cdd98 | 1873 | this->frame.s.section = sectp; |
fd361982 | 1874 | this->frame.size = bfd_section_size (sectp); |
b6af0555 | 1875 | } |
330cdd98 | 1876 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 1877 | { |
330cdd98 | 1878 | this->eh_frame.s.section = sectp; |
fd361982 | 1879 | this->eh_frame.size = bfd_section_size (sectp); |
b6af0555 | 1880 | } |
330cdd98 | 1881 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 1882 | { |
330cdd98 | 1883 | this->ranges.s.section = sectp; |
fd361982 | 1884 | this->ranges.size = bfd_section_size (sectp); |
af34e669 | 1885 | } |
330cdd98 | 1886 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 1887 | { |
330cdd98 | 1888 | this->rnglists.s.section = sectp; |
fd361982 | 1889 | this->rnglists.size = bfd_section_size (sectp); |
43988095 | 1890 | } |
330cdd98 | 1891 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 1892 | { |
8b70b953 TT |
1893 | struct dwarf2_section_info type_section; |
1894 | ||
1895 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 1896 | type_section.s.section = sectp; |
fd361982 | 1897 | type_section.size = bfd_section_size (sectp); |
8b70b953 | 1898 | |
fd5866f6 | 1899 | this->types.push_back (type_section); |
348e048f | 1900 | } |
330cdd98 | 1901 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 1902 | { |
330cdd98 | 1903 | this->gdb_index.s.section = sectp; |
fd361982 | 1904 | this->gdb_index.size = bfd_section_size (sectp); |
9291a0cd | 1905 | } |
927aa2e7 JK |
1906 | else if (section_is_p (sectp->name, &names.debug_names)) |
1907 | { | |
1908 | this->debug_names.s.section = sectp; | |
fd361982 | 1909 | this->debug_names.size = bfd_section_size (sectp); |
927aa2e7 JK |
1910 | } |
1911 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
1912 | { | |
1913 | this->debug_aranges.s.section = sectp; | |
fd361982 | 1914 | this->debug_aranges.size = bfd_section_size (sectp); |
927aa2e7 | 1915 | } |
dce234bc | 1916 | |
fd361982 AM |
1917 | if ((bfd_section_flags (sectp) & (SEC_LOAD | SEC_ALLOC)) |
1918 | && bfd_section_vma (sectp) == 0) | |
330cdd98 | 1919 | this->has_section_at_zero = true; |
c906108c SS |
1920 | } |
1921 | ||
dce234bc | 1922 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 1923 | SECTION_NAME. */ |
af34e669 | 1924 | |
dce234bc | 1925 | void |
3017a003 TG |
1926 | dwarf2_get_section_info (struct objfile *objfile, |
1927 | enum dwarf2_section_enum sect, | |
d521ce57 | 1928 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
1929 | bfd_size_type *sizep) |
1930 | { | |
5bfd760d | 1931 | struct dwarf2_per_objfile *data = dwarf2_objfile_data_key.get (objfile); |
dce234bc | 1932 | struct dwarf2_section_info *info; |
a3b2a86b TT |
1933 | |
1934 | /* We may see an objfile without any DWARF, in which case we just | |
1935 | return nothing. */ | |
1936 | if (data == NULL) | |
1937 | { | |
1938 | *sectp = NULL; | |
1939 | *bufp = NULL; | |
1940 | *sizep = 0; | |
1941 | return; | |
1942 | } | |
3017a003 TG |
1943 | switch (sect) |
1944 | { | |
1945 | case DWARF2_DEBUG_FRAME: | |
1946 | info = &data->frame; | |
1947 | break; | |
1948 | case DWARF2_EH_FRAME: | |
1949 | info = &data->eh_frame; | |
1950 | break; | |
1951 | default: | |
1952 | gdb_assert_not_reached ("unexpected section"); | |
1953 | } | |
dce234bc | 1954 | |
96b79293 | 1955 | info->read (objfile); |
dce234bc | 1956 | |
96b79293 | 1957 | *sectp = info->get_bfd_section (); |
dce234bc PP |
1958 | *bufp = info->buffer; |
1959 | *sizep = info->size; | |
1960 | } | |
1961 | ||
36586728 TT |
1962 | /* A helper function to find the sections for a .dwz file. */ |
1963 | ||
1964 | static void | |
1965 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
1966 | { | |
9a3c8263 | 1967 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
1968 | |
1969 | /* Note that we only support the standard ELF names, because .dwz | |
1970 | is ELF-only (at the time of writing). */ | |
1971 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
1972 | { | |
049412e3 | 1973 | dwz_file->abbrev.s.section = sectp; |
fd361982 | 1974 | dwz_file->abbrev.size = bfd_section_size (sectp); |
36586728 TT |
1975 | } |
1976 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
1977 | { | |
049412e3 | 1978 | dwz_file->info.s.section = sectp; |
fd361982 | 1979 | dwz_file->info.size = bfd_section_size (sectp); |
36586728 TT |
1980 | } |
1981 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
1982 | { | |
049412e3 | 1983 | dwz_file->str.s.section = sectp; |
fd361982 | 1984 | dwz_file->str.size = bfd_section_size (sectp); |
36586728 TT |
1985 | } |
1986 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
1987 | { | |
049412e3 | 1988 | dwz_file->line.s.section = sectp; |
fd361982 | 1989 | dwz_file->line.size = bfd_section_size (sectp); |
36586728 TT |
1990 | } |
1991 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
1992 | { | |
049412e3 | 1993 | dwz_file->macro.s.section = sectp; |
fd361982 | 1994 | dwz_file->macro.size = bfd_section_size (sectp); |
36586728 | 1995 | } |
2ec9a5e0 TT |
1996 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
1997 | { | |
049412e3 | 1998 | dwz_file->gdb_index.s.section = sectp; |
fd361982 | 1999 | dwz_file->gdb_index.size = bfd_section_size (sectp); |
2ec9a5e0 | 2000 | } |
927aa2e7 JK |
2001 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2002 | { | |
2003 | dwz_file->debug_names.s.section = sectp; | |
fd361982 | 2004 | dwz_file->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2005 | } |
36586728 TT |
2006 | } |
2007 | ||
c4973306 | 2008 | /* See dwarf2read.h. */ |
36586728 | 2009 | |
c4973306 | 2010 | struct dwz_file * |
ed2dc618 | 2011 | dwarf2_get_dwz_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 2012 | { |
36586728 | 2013 | const char *filename; |
acd13123 | 2014 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2015 | size_t buildid_len; |
2016 | bfd_byte *buildid; | |
36586728 TT |
2017 | |
2018 | if (dwarf2_per_objfile->dwz_file != NULL) | |
7ff8cb8c | 2019 | return dwarf2_per_objfile->dwz_file.get (); |
36586728 | 2020 | |
4db1a1dc | 2021 | bfd_set_error (bfd_error_no_error); |
791afaa2 TT |
2022 | gdb::unique_xmalloc_ptr<char> data |
2023 | (bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
2024 | &buildid_len_arg, &buildid)); | |
4db1a1dc TT |
2025 | if (data == NULL) |
2026 | { | |
2027 | if (bfd_get_error () == bfd_error_no_error) | |
2028 | return NULL; | |
2029 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2030 | bfd_errmsg (bfd_get_error ())); | |
2031 | } | |
791afaa2 TT |
2032 | |
2033 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2034 | |
acd13123 TT |
2035 | buildid_len = (size_t) buildid_len_arg; |
2036 | ||
791afaa2 | 2037 | filename = data.get (); |
d721ba37 PA |
2038 | |
2039 | std::string abs_storage; | |
36586728 TT |
2040 | if (!IS_ABSOLUTE_PATH (filename)) |
2041 | { | |
14278e1f TT |
2042 | gdb::unique_xmalloc_ptr<char> abs |
2043 | = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); | |
36586728 | 2044 | |
14278e1f | 2045 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2046 | filename = abs_storage.c_str (); |
36586728 TT |
2047 | } |
2048 | ||
dc294be5 TT |
2049 | /* First try the file name given in the section. If that doesn't |
2050 | work, try to use the build-id instead. */ | |
192b62ce | 2051 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget, -1)); |
dc294be5 | 2052 | if (dwz_bfd != NULL) |
36586728 | 2053 | { |
192b62ce | 2054 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
0f58c9e8 | 2055 | dwz_bfd.reset (nullptr); |
36586728 TT |
2056 | } |
2057 | ||
dc294be5 TT |
2058 | if (dwz_bfd == NULL) |
2059 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2060 | ||
0d79cdc4 AM |
2061 | if (dwz_bfd == nullptr) |
2062 | { | |
2063 | gdb::unique_xmalloc_ptr<char> alt_filename; | |
2064 | const char *origname = dwarf2_per_objfile->objfile->original_name; | |
2065 | ||
2066 | scoped_fd fd (debuginfod_debuginfo_query (buildid, | |
2067 | buildid_len, | |
2068 | origname, | |
2069 | &alt_filename)); | |
2070 | ||
2071 | if (fd.get () >= 0) | |
2072 | { | |
2073 | /* File successfully retrieved from server. */ | |
2074 | dwz_bfd = gdb_bfd_open (alt_filename.get (), gnutarget, -1); | |
2075 | ||
2076 | if (dwz_bfd == nullptr) | |
2077 | warning (_("File \"%s\" from debuginfod cannot be opened as bfd"), | |
2078 | alt_filename.get ()); | |
2079 | else if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) | |
2080 | dwz_bfd.reset (nullptr); | |
2081 | } | |
2082 | } | |
2083 | ||
dc294be5 TT |
2084 | if (dwz_bfd == NULL) |
2085 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2086 | objfile_name (dwarf2_per_objfile->objfile)); | |
2087 | ||
7ff8cb8c TT |
2088 | std::unique_ptr<struct dwz_file> result |
2089 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2090 | |
7ff8cb8c TT |
2091 | bfd_map_over_sections (result->dwz_bfd.get (), locate_dwz_sections, |
2092 | result.get ()); | |
36586728 | 2093 | |
7ff8cb8c TT |
2094 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, |
2095 | result->dwz_bfd.get ()); | |
2096 | dwarf2_per_objfile->dwz_file = std::move (result); | |
2097 | return dwarf2_per_objfile->dwz_file.get (); | |
36586728 | 2098 | } |
9291a0cd | 2099 | \f |
7b9f3c50 DE |
2100 | /* DWARF quick_symbols_functions support. */ |
2101 | ||
2102 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2103 | unique line tables, so we maintain a separate table of all .debug_line | |
2104 | derived entries to support the sharing. | |
2105 | All the quick functions need is the list of file names. We discard the | |
2106 | line_header when we're done and don't need to record it here. */ | |
2107 | struct quick_file_names | |
2108 | { | |
094b34ac DE |
2109 | /* The data used to construct the hash key. */ |
2110 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2111 | |
2112 | /* The number of entries in file_names, real_names. */ | |
2113 | unsigned int num_file_names; | |
2114 | ||
2115 | /* The file names from the line table, after being run through | |
2116 | file_full_name. */ | |
2117 | const char **file_names; | |
2118 | ||
2119 | /* The file names from the line table after being run through | |
2120 | gdb_realpath. These are computed lazily. */ | |
2121 | const char **real_names; | |
2122 | }; | |
2123 | ||
2124 | /* When using the index (and thus not using psymtabs), each CU has an | |
2125 | object of this type. This is used to hold information needed by | |
2126 | the various "quick" methods. */ | |
2127 | struct dwarf2_per_cu_quick_data | |
2128 | { | |
2129 | /* The file table. This can be NULL if there was no file table | |
2130 | or it's currently not read in. | |
2131 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2132 | struct quick_file_names *file_names; | |
2133 | ||
2134 | /* The corresponding symbol table. This is NULL if symbols for this | |
2135 | CU have not yet been read. */ | |
43f3e411 | 2136 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
2137 | |
2138 | /* A temporary mark bit used when iterating over all CUs in | |
2139 | expand_symtabs_matching. */ | |
2140 | unsigned int mark : 1; | |
2141 | ||
2142 | /* True if we've tried to read the file table and found there isn't one. | |
2143 | There will be no point in trying to read it again next time. */ | |
2144 | unsigned int no_file_data : 1; | |
2145 | }; | |
2146 | ||
094b34ac DE |
2147 | /* Utility hash function for a stmt_list_hash. */ |
2148 | ||
2149 | static hashval_t | |
2150 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2151 | { | |
2152 | hashval_t v = 0; | |
2153 | ||
2154 | if (stmt_list_hash->dwo_unit != NULL) | |
2155 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2156 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2157 | return v; |
2158 | } | |
2159 | ||
2160 | /* Utility equality function for a stmt_list_hash. */ | |
2161 | ||
2162 | static int | |
2163 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2164 | const struct stmt_list_hash *rhs) | |
2165 | { | |
2166 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2167 | return 0; | |
2168 | if (lhs->dwo_unit != NULL | |
2169 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2170 | return 0; | |
2171 | ||
9c541725 | 2172 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2173 | } |
2174 | ||
7b9f3c50 DE |
2175 | /* Hash function for a quick_file_names. */ |
2176 | ||
2177 | static hashval_t | |
2178 | hash_file_name_entry (const void *e) | |
2179 | { | |
9a3c8263 SM |
2180 | const struct quick_file_names *file_data |
2181 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2182 | |
094b34ac | 2183 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2184 | } |
2185 | ||
2186 | /* Equality function for a quick_file_names. */ | |
2187 | ||
2188 | static int | |
2189 | eq_file_name_entry (const void *a, const void *b) | |
2190 | { | |
9a3c8263 SM |
2191 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2192 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2193 | |
094b34ac | 2194 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2195 | } |
2196 | ||
2197 | /* Delete function for a quick_file_names. */ | |
2198 | ||
2199 | static void | |
2200 | delete_file_name_entry (void *e) | |
2201 | { | |
9a3c8263 | 2202 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2203 | int i; |
2204 | ||
2205 | for (i = 0; i < file_data->num_file_names; ++i) | |
2206 | { | |
2207 | xfree ((void*) file_data->file_names[i]); | |
2208 | if (file_data->real_names) | |
2209 | xfree ((void*) file_data->real_names[i]); | |
2210 | } | |
2211 | ||
2212 | /* The space for the struct itself lives on objfile_obstack, | |
2213 | so we don't free it here. */ | |
2214 | } | |
2215 | ||
2216 | /* Create a quick_file_names hash table. */ | |
2217 | ||
5895093f | 2218 | static htab_up |
7b9f3c50 DE |
2219 | create_quick_file_names_table (unsigned int nr_initial_entries) |
2220 | { | |
5895093f TT |
2221 | return htab_up (htab_create_alloc (nr_initial_entries, |
2222 | hash_file_name_entry, eq_file_name_entry, | |
2223 | delete_file_name_entry, xcalloc, xfree)); | |
7b9f3c50 | 2224 | } |
9291a0cd | 2225 | |
918dd910 JK |
2226 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2227 | have to be created afterwards. You should call age_cached_comp_units after | |
2228 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2229 | ||
2230 | static void | |
58f0c718 | 2231 | load_cu (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
918dd910 | 2232 | { |
3019eac3 | 2233 | if (per_cu->is_debug_types) |
e5fe5e75 | 2234 | load_full_type_unit (per_cu); |
918dd910 | 2235 | else |
58f0c718 | 2236 | load_full_comp_unit (per_cu, skip_partial, language_minimal); |
918dd910 | 2237 | |
cc12ce38 DE |
2238 | if (per_cu->cu == NULL) |
2239 | return; /* Dummy CU. */ | |
2dc860c0 DE |
2240 | |
2241 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2242 | } |
2243 | ||
a0f42c21 | 2244 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2245 | |
9291a0cd | 2246 | static void |
58f0c718 | 2247 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2248 | { |
ed2dc618 | 2249 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9291a0cd | 2250 | |
f4dc4d17 DE |
2251 | /* Skip type_unit_groups, reading the type units they contain |
2252 | is handled elsewhere. */ | |
197400e8 | 2253 | if (per_cu->type_unit_group_p ()) |
f4dc4d17 DE |
2254 | return; |
2255 | ||
b303c6f6 AB |
2256 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2257 | the queue. After this point we're guaranteed to leave this function | |
2258 | with the dwarf queue empty. */ | |
39856def | 2259 | dwarf2_queue_guard q_guard (dwarf2_per_objfile); |
9291a0cd | 2260 | |
95554aad | 2261 | if (dwarf2_per_objfile->using_index |
43f3e411 | 2262 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
2263 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
2264 | { | |
2265 | queue_comp_unit (per_cu, language_minimal); | |
58f0c718 | 2266 | load_cu (per_cu, skip_partial); |
89e63ee4 DE |
2267 | |
2268 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2269 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2270 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2271 | if (!per_cu->is_debug_types | |
cc12ce38 | 2272 | && per_cu->cu != NULL |
89e63ee4 DE |
2273 | && per_cu->cu->dwo_unit != NULL |
2274 | && dwarf2_per_objfile->index_table != NULL | |
2275 | && dwarf2_per_objfile->index_table->version <= 7 | |
2276 | /* DWP files aren't supported yet. */ | |
ed2dc618 | 2277 | && get_dwp_file (dwarf2_per_objfile) == NULL) |
89e63ee4 | 2278 | queue_and_load_all_dwo_tus (per_cu); |
95554aad | 2279 | } |
9291a0cd | 2280 | |
ed2dc618 | 2281 | process_queue (dwarf2_per_objfile); |
9291a0cd TT |
2282 | |
2283 | /* Age the cache, releasing compilation units that have not | |
2284 | been used recently. */ | |
ed2dc618 | 2285 | age_cached_comp_units (dwarf2_per_objfile); |
9291a0cd TT |
2286 | } |
2287 | ||
2288 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2289 | the objfile from which this CU came. Returns the resulting symbol | |
2290 | table. */ | |
2fdf6df6 | 2291 | |
43f3e411 | 2292 | static struct compunit_symtab * |
58f0c718 | 2293 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2294 | { |
ed2dc618 SM |
2295 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
2296 | ||
95554aad | 2297 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 2298 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd | 2299 | { |
11ed8cad | 2300 | free_cached_comp_units freer (dwarf2_per_objfile); |
c83dd867 | 2301 | scoped_restore decrementer = increment_reading_symtab (); |
58f0c718 | 2302 | dw2_do_instantiate_symtab (per_cu, skip_partial); |
ed2dc618 | 2303 | process_cu_includes (dwarf2_per_objfile); |
9291a0cd | 2304 | } |
f194fefb | 2305 | |
43f3e411 | 2306 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
2307 | } |
2308 | ||
ff4c9fec | 2309 | /* See declaration. */ |
f4dc4d17 | 2310 | |
ff4c9fec SM |
2311 | dwarf2_per_cu_data * |
2312 | dwarf2_per_objfile::get_cutu (int index) | |
2313 | { | |
b76e467d | 2314 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2315 | { |
b76e467d | 2316 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2317 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2318 | return &this->all_type_units[index]->per_cu; |
2319 | } | |
f4dc4d17 | 2320 | |
ff4c9fec SM |
2321 | return this->all_comp_units[index]; |
2322 | } | |
f4dc4d17 | 2323 | |
ff4c9fec | 2324 | /* See declaration. */ |
2fdf6df6 | 2325 | |
ff4c9fec SM |
2326 | dwarf2_per_cu_data * |
2327 | dwarf2_per_objfile::get_cu (int index) | |
1fd400ff | 2328 | { |
b76e467d | 2329 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2330 | |
ff4c9fec | 2331 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2332 | } |
2333 | ||
ff4c9fec | 2334 | /* See declaration. */ |
f4dc4d17 | 2335 | |
ff4c9fec SM |
2336 | signatured_type * |
2337 | dwarf2_per_objfile::get_tu (int index) | |
f4dc4d17 | 2338 | { |
b2bdb8cf | 2339 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2340 | |
ff4c9fec | 2341 | return this->all_type_units[index]; |
1fd400ff TT |
2342 | } |
2343 | ||
4b514bc8 JK |
2344 | /* Return a new dwarf2_per_cu_data allocated on OBJFILE's |
2345 | objfile_obstack, and constructed with the specified field | |
2346 | values. */ | |
2347 | ||
2348 | static dwarf2_per_cu_data * | |
ed2dc618 | 2349 | create_cu_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4b514bc8 JK |
2350 | struct dwarf2_section_info *section, |
2351 | int is_dwz, | |
2352 | sect_offset sect_off, ULONGEST length) | |
2353 | { | |
ed2dc618 | 2354 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4b514bc8 JK |
2355 | dwarf2_per_cu_data *the_cu |
2356 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2357 | struct dwarf2_per_cu_data); | |
2358 | the_cu->sect_off = sect_off; | |
2359 | the_cu->length = length; | |
e3b94546 | 2360 | the_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
4b514bc8 JK |
2361 | the_cu->section = section; |
2362 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2363 | struct dwarf2_per_cu_quick_data); | |
2364 | the_cu->is_dwz = is_dwz; | |
2365 | return the_cu; | |
2366 | } | |
2367 | ||
2ec9a5e0 TT |
2368 | /* A helper for create_cus_from_index that handles a given list of |
2369 | CUs. */ | |
2fdf6df6 | 2370 | |
74a0d9f6 | 2371 | static void |
12359b5e | 2372 | create_cus_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
2373 | const gdb_byte *cu_list, offset_type n_elements, |
2374 | struct dwarf2_section_info *section, | |
b76e467d | 2375 | int is_dwz) |
9291a0cd | 2376 | { |
12359b5e | 2377 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2378 | { |
74a0d9f6 | 2379 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2380 | |
2381 | sect_offset sect_off | |
2382 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2383 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2384 | cu_list += 2 * 8; |
2385 | ||
b76e467d | 2386 | dwarf2_per_cu_data *per_cu |
ed2dc618 SM |
2387 | = create_cu_from_index_list (dwarf2_per_objfile, section, is_dwz, |
2388 | sect_off, length); | |
b76e467d | 2389 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
9291a0cd | 2390 | } |
9291a0cd TT |
2391 | } |
2392 | ||
2ec9a5e0 | 2393 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 2394 | the CU objects for this objfile. */ |
2ec9a5e0 | 2395 | |
74a0d9f6 | 2396 | static void |
12359b5e | 2397 | create_cus_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
2398 | const gdb_byte *cu_list, offset_type cu_list_elements, |
2399 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2400 | { | |
b76e467d SM |
2401 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
2402 | dwarf2_per_objfile->all_comp_units.reserve | |
2403 | ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 2404 | |
12359b5e | 2405 | create_cus_from_index_list (dwarf2_per_objfile, cu_list, cu_list_elements, |
b76e467d | 2406 | &dwarf2_per_objfile->info, 0); |
2ec9a5e0 TT |
2407 | |
2408 | if (dwz_elements == 0) | |
74a0d9f6 | 2409 | return; |
2ec9a5e0 | 2410 | |
12359b5e SM |
2411 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
2412 | create_cus_from_index_list (dwarf2_per_objfile, dwz_list, dwz_elements, | |
b76e467d | 2413 | &dwz->info, 1); |
2ec9a5e0 TT |
2414 | } |
2415 | ||
1fd400ff | 2416 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2417 | |
74a0d9f6 | 2418 | static void |
12359b5e SM |
2419 | create_signatured_type_table_from_index |
2420 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
2421 | struct dwarf2_section_info *section, | |
2422 | const gdb_byte *bytes, | |
2423 | offset_type elements) | |
1fd400ff | 2424 | { |
12359b5e | 2425 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
1fd400ff | 2426 | |
b2bdb8cf SM |
2427 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
2428 | dwarf2_per_objfile->all_type_units.reserve (elements / 3); | |
1fd400ff | 2429 | |
298e9637 | 2430 | htab_up sig_types_hash = allocate_signatured_type_table (); |
1fd400ff | 2431 | |
12359b5e | 2432 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 2433 | { |
52dc124a | 2434 | struct signatured_type *sig_type; |
9c541725 | 2435 | ULONGEST signature; |
1fd400ff | 2436 | void **slot; |
9c541725 | 2437 | cu_offset type_offset_in_tu; |
1fd400ff | 2438 | |
74a0d9f6 | 2439 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2440 | sect_offset sect_off |
2441 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2442 | type_offset_in_tu | |
2443 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
2444 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2445 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2446 | bytes += 3 * 8; | |
2447 | ||
52dc124a | 2448 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2449 | struct signatured_type); |
52dc124a | 2450 | sig_type->signature = signature; |
9c541725 | 2451 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 2452 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 2453 | sig_type->per_cu.section = section; |
9c541725 | 2454 | sig_type->per_cu.sect_off = sect_off; |
e3b94546 | 2455 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
52dc124a | 2456 | sig_type->per_cu.v.quick |
1fd400ff TT |
2457 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2458 | struct dwarf2_per_cu_quick_data); | |
2459 | ||
b0b6a987 | 2460 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
52dc124a | 2461 | *slot = sig_type; |
1fd400ff | 2462 | |
b2bdb8cf | 2463 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
1fd400ff TT |
2464 | } |
2465 | ||
b0b6a987 | 2466 | dwarf2_per_objfile->signatured_types = std::move (sig_types_hash); |
1fd400ff TT |
2467 | } |
2468 | ||
927aa2e7 JK |
2469 | /* Create the signatured type hash table from .debug_names. */ |
2470 | ||
2471 | static void | |
2472 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 2473 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
2474 | const mapped_debug_names &map, |
2475 | struct dwarf2_section_info *section, | |
2476 | struct dwarf2_section_info *abbrev_section) | |
2477 | { | |
ed2dc618 SM |
2478 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2479 | ||
96b79293 TT |
2480 | section->read (objfile); |
2481 | abbrev_section->read (objfile); | |
927aa2e7 | 2482 | |
b2bdb8cf SM |
2483 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
2484 | dwarf2_per_objfile->all_type_units.reserve (map.tu_count); | |
927aa2e7 | 2485 | |
298e9637 | 2486 | htab_up sig_types_hash = allocate_signatured_type_table (); |
927aa2e7 JK |
2487 | |
2488 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
2489 | { | |
2490 | struct signatured_type *sig_type; | |
927aa2e7 | 2491 | void **slot; |
927aa2e7 JK |
2492 | |
2493 | sect_offset sect_off | |
2494 | = (sect_offset) (extract_unsigned_integer | |
2495 | (map.tu_table_reordered + i * map.offset_size, | |
2496 | map.offset_size, | |
2497 | map.dwarf5_byte_order)); | |
2498 | ||
2499 | comp_unit_head cu_header; | |
ed2dc618 SM |
2500 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
2501 | abbrev_section, | |
927aa2e7 JK |
2502 | section->buffer + to_underlying (sect_off), |
2503 | rcuh_kind::TYPE); | |
2504 | ||
2505 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2506 | struct signatured_type); | |
2507 | sig_type->signature = cu_header.signature; | |
2508 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
2509 | sig_type->per_cu.is_debug_types = 1; | |
2510 | sig_type->per_cu.section = section; | |
2511 | sig_type->per_cu.sect_off = sect_off; | |
e3b94546 | 2512 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
927aa2e7 JK |
2513 | sig_type->per_cu.v.quick |
2514 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2515 | struct dwarf2_per_cu_quick_data); | |
2516 | ||
b0b6a987 | 2517 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
927aa2e7 JK |
2518 | *slot = sig_type; |
2519 | ||
b2bdb8cf | 2520 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
927aa2e7 JK |
2521 | } |
2522 | ||
b0b6a987 | 2523 | dwarf2_per_objfile->signatured_types = std::move (sig_types_hash); |
927aa2e7 JK |
2524 | } |
2525 | ||
9291a0cd TT |
2526 | /* Read the address map data from the mapped index, and use it to |
2527 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2528 | |
9291a0cd | 2529 | static void |
ed2dc618 SM |
2530 | create_addrmap_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2531 | struct mapped_index *index) | |
9291a0cd | 2532 | { |
ed2dc618 | 2533 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 2534 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9291a0cd | 2535 | const gdb_byte *iter, *end; |
9291a0cd | 2536 | struct addrmap *mutable_map; |
9291a0cd TT |
2537 | CORE_ADDR baseaddr; |
2538 | ||
8268c778 PA |
2539 | auto_obstack temp_obstack; |
2540 | ||
9291a0cd TT |
2541 | mutable_map = addrmap_create_mutable (&temp_obstack); |
2542 | ||
f00a2de2 PA |
2543 | iter = index->address_table.data (); |
2544 | end = iter + index->address_table.size (); | |
9291a0cd | 2545 | |
b3b3bada | 2546 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
2547 | |
2548 | while (iter < end) | |
2549 | { | |
2550 | ULONGEST hi, lo, cu_index; | |
2551 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2552 | iter += 8; | |
2553 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2554 | iter += 8; | |
2555 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2556 | iter += 4; | |
f652bce2 | 2557 | |
24a55014 | 2558 | if (lo > hi) |
f652bce2 | 2559 | { |
b98664d3 | 2560 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 2561 | hex_string (lo), hex_string (hi)); |
24a55014 | 2562 | continue; |
f652bce2 | 2563 | } |
24a55014 | 2564 | |
b76e467d | 2565 | if (cu_index >= dwarf2_per_objfile->all_comp_units.size ()) |
f652bce2 | 2566 | { |
b98664d3 | 2567 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 2568 | (unsigned) cu_index); |
24a55014 | 2569 | continue; |
f652bce2 | 2570 | } |
24a55014 | 2571 | |
79748972 TT |
2572 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
2573 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 2574 | addrmap_set_empty (mutable_map, lo, hi - 1, |
ff4c9fec | 2575 | dwarf2_per_objfile->get_cu (cu_index)); |
9291a0cd TT |
2576 | } |
2577 | ||
d320c2b5 | 2578 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2579 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
9291a0cd TT |
2580 | } |
2581 | ||
927aa2e7 JK |
2582 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
2583 | populate the objfile's psymtabs_addrmap. */ | |
2584 | ||
2585 | static void | |
ed2dc618 | 2586 | create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
2587 | struct dwarf2_section_info *section) |
2588 | { | |
ed2dc618 | 2589 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 JK |
2590 | bfd *abfd = objfile->obfd; |
2591 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
b3b3bada | 2592 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
927aa2e7 JK |
2593 | |
2594 | auto_obstack temp_obstack; | |
2595 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
2596 | ||
2597 | std::unordered_map<sect_offset, | |
2598 | dwarf2_per_cu_data *, | |
2599 | gdb::hash_enum<sect_offset>> | |
2600 | debug_info_offset_to_per_cu; | |
b76e467d | 2601 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 2602 | { |
927aa2e7 JK |
2603 | const auto insertpair |
2604 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
2605 | if (!insertpair.second) | |
2606 | { | |
2607 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
2608 | "debug_info_offset %s, ignoring .debug_aranges."), |
2609 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
2610 | return; |
2611 | } | |
2612 | } | |
2613 | ||
96b79293 | 2614 | section->read (objfile); |
927aa2e7 JK |
2615 | |
2616 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
2617 | ||
2618 | const gdb_byte *addr = section->buffer; | |
2619 | ||
2620 | while (addr < section->buffer + section->size) | |
2621 | { | |
2622 | const gdb_byte *const entry_addr = addr; | |
2623 | unsigned int bytes_read; | |
2624 | ||
2625 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
2626 | &bytes_read); | |
2627 | addr += bytes_read; | |
2628 | ||
2629 | const gdb_byte *const entry_end = addr + entry_length; | |
2630 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
2631 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
2632 | if (addr + entry_length > section->buffer + section->size) | |
2633 | { | |
47e3f474 | 2634 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2635 | "length %s exceeds section length %s, " |
2636 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2637 | objfile_name (objfile), |
2638 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2639 | plongest (bytes_read + entry_length), |
2640 | pulongest (section->size)); | |
2641 | return; | |
2642 | } | |
2643 | ||
2644 | /* The version number. */ | |
2645 | const uint16_t version = read_2_bytes (abfd, addr); | |
2646 | addr += 2; | |
2647 | if (version != 2) | |
2648 | { | |
47e3f474 | 2649 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2650 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
2651 | objfile_name (objfile), |
2652 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
2653 | return; |
2654 | } | |
2655 | ||
2656 | const uint64_t debug_info_offset | |
2657 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
2658 | addr += offset_size; | |
2659 | const auto per_cu_it | |
2660 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
2661 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
2662 | { | |
47e3f474 | 2663 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2664 | "debug_info_offset %s does not exists, " |
2665 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2666 | objfile_name (objfile), |
2667 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2668 | pulongest (debug_info_offset)); |
2669 | return; | |
2670 | } | |
2671 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
2672 | ||
2673 | const uint8_t address_size = *addr++; | |
2674 | if (address_size < 1 || address_size > 8) | |
2675 | { | |
47e3f474 | 2676 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2677 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
2678 | objfile_name (objfile), |
2679 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
2680 | return; |
2681 | } | |
2682 | ||
2683 | const uint8_t segment_selector_size = *addr++; | |
2684 | if (segment_selector_size != 0) | |
2685 | { | |
47e3f474 | 2686 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2687 | "segment_selector_size %u is not supported, " |
2688 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2689 | objfile_name (objfile), |
2690 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2691 | segment_selector_size); |
2692 | return; | |
2693 | } | |
2694 | ||
2695 | /* Must pad to an alignment boundary that is twice the address | |
2696 | size. It is undocumented by the DWARF standard but GCC does | |
2697 | use it. */ | |
2698 | for (size_t padding = ((-(addr - section->buffer)) | |
2699 | & (2 * address_size - 1)); | |
2700 | padding > 0; padding--) | |
2701 | if (*addr++ != 0) | |
2702 | { | |
47e3f474 | 2703 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2704 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
2705 | objfile_name (objfile), |
2706 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2707 | return; |
2708 | } | |
2709 | ||
2710 | for (;;) | |
2711 | { | |
2712 | if (addr + 2 * address_size > entry_end) | |
2713 | { | |
47e3f474 | 2714 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2715 | "address list is not properly terminated, " |
2716 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2717 | objfile_name (objfile), |
2718 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2719 | return; |
2720 | } | |
2721 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
2722 | dwarf5_byte_order); | |
2723 | addr += address_size; | |
2724 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
2725 | dwarf5_byte_order); | |
2726 | addr += address_size; | |
2727 | if (start == 0 && length == 0) | |
2728 | break; | |
2729 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
2730 | { | |
2731 | /* Symbol was eliminated due to a COMDAT group. */ | |
2732 | continue; | |
2733 | } | |
2734 | ULONGEST end = start + length; | |
79748972 TT |
2735 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
2736 | - baseaddr); | |
2737 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
2738 | - baseaddr); | |
927aa2e7 JK |
2739 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
2740 | } | |
2741 | } | |
2742 | ||
d320c2b5 | 2743 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2744 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
927aa2e7 JK |
2745 | } |
2746 | ||
9291a0cd TT |
2747 | /* Find a slot in the mapped index INDEX for the object named NAME. |
2748 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
2749 | constant pool and return true. If NAME cannot be found, return |
2750 | false. */ | |
2fdf6df6 | 2751 | |
109483d9 | 2752 | static bool |
9291a0cd TT |
2753 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
2754 | offset_type **vec_out) | |
2755 | { | |
0cf03b49 | 2756 | offset_type hash; |
9291a0cd | 2757 | offset_type slot, step; |
559a7a62 | 2758 | int (*cmp) (const char *, const char *); |
9291a0cd | 2759 | |
791afaa2 | 2760 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 2761 | if (current_language->la_language == language_cplus |
45280282 IB |
2762 | || current_language->la_language == language_fortran |
2763 | || current_language->la_language == language_d) | |
0cf03b49 JK |
2764 | { |
2765 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2766 | not contain any. */ | |
a8719064 | 2767 | |
72998fb3 | 2768 | if (strchr (name, '(') != NULL) |
0cf03b49 | 2769 | { |
109483d9 | 2770 | without_params = cp_remove_params (name); |
0cf03b49 | 2771 | |
72998fb3 | 2772 | if (without_params != NULL) |
791afaa2 | 2773 | name = without_params.get (); |
0cf03b49 JK |
2774 | } |
2775 | } | |
2776 | ||
559a7a62 | 2777 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2778 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2779 | simulate our NAME being searched is also lowercased. */ |
2780 | hash = mapped_index_string_hash ((index->version == 4 | |
2781 | && case_sensitivity == case_sensitive_off | |
2782 | ? 5 : index->version), | |
2783 | name); | |
2784 | ||
f00a2de2 PA |
2785 | slot = hash & (index->symbol_table.size () - 1); |
2786 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 2787 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2788 | |
2789 | for (;;) | |
2790 | { | |
9291a0cd | 2791 | const char *str; |
f00a2de2 PA |
2792 | |
2793 | const auto &bucket = index->symbol_table[slot]; | |
2794 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 2795 | return false; |
9291a0cd | 2796 | |
f00a2de2 | 2797 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 2798 | if (!cmp (name, str)) |
9291a0cd TT |
2799 | { |
2800 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 2801 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 2802 | return true; |
9291a0cd TT |
2803 | } |
2804 | ||
f00a2de2 | 2805 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
2806 | } |
2807 | } | |
2808 | ||
4485a1c1 SM |
2809 | /* A helper function that reads the .gdb_index from BUFFER and fills |
2810 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 2811 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
2812 | ok to use deprecated sections. |
2813 | ||
2814 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
2815 | out parameters that are filled in with information about the CU and | |
2816 | TU lists in the section. | |
2817 | ||
4485a1c1 | 2818 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 2819 | |
d33bc52e | 2820 | static bool |
4485a1c1 SM |
2821 | read_gdb_index_from_buffer (struct objfile *objfile, |
2822 | const char *filename, | |
2823 | bool deprecated_ok, | |
2824 | gdb::array_view<const gdb_byte> buffer, | |
2825 | struct mapped_index *map, | |
2826 | const gdb_byte **cu_list, | |
2827 | offset_type *cu_list_elements, | |
2828 | const gdb_byte **types_list, | |
2829 | offset_type *types_list_elements) | |
2830 | { | |
2831 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 2832 | |
9291a0cd | 2833 | /* Version check. */ |
4485a1c1 | 2834 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2835 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2836 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2837 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 2838 | indices. */ |
831adc1f | 2839 | if (version < 4) |
481860b3 GB |
2840 | { |
2841 | static int warning_printed = 0; | |
2842 | if (!warning_printed) | |
2843 | { | |
2844 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 2845 | filename); |
481860b3 GB |
2846 | warning_printed = 1; |
2847 | } | |
2848 | return 0; | |
2849 | } | |
2850 | /* Index version 4 uses a different hash function than index version | |
2851 | 5 and later. | |
2852 | ||
2853 | Versions earlier than 6 did not emit psymbols for inlined | |
2854 | functions. Using these files will cause GDB not to be able to | |
2855 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
2856 | indices unless the user has done |
2857 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 2858 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
2859 | { |
2860 | static int warning_printed = 0; | |
2861 | if (!warning_printed) | |
2862 | { | |
e615022a DE |
2863 | warning (_("\ |
2864 | Skipping deprecated .gdb_index section in %s.\n\ | |
2865 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
2866 | to use the section anyway."), | |
2ec9a5e0 | 2867 | filename); |
481860b3 GB |
2868 | warning_printed = 1; |
2869 | } | |
2870 | return 0; | |
2871 | } | |
796a7ff8 | 2872 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
2873 | of the TU (for symbols coming from TUs), |
2874 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
2875 | Plus gold-generated indices can have duplicate entries for global symbols, | |
2876 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
2877 | These are just performance bugs, and we can't distinguish gdb-generated | |
2878 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 2879 | |
481860b3 | 2880 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 2881 | longer backward compatible. */ |
796a7ff8 | 2882 | if (version > 8) |
594e8718 | 2883 | return 0; |
9291a0cd | 2884 | |
559a7a62 | 2885 | map->version = version; |
9291a0cd | 2886 | |
4485a1c1 | 2887 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 2888 | |
4485a1c1 | 2889 | int i = 0; |
2ec9a5e0 TT |
2890 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
2891 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
2892 | / 8); | |
1fd400ff TT |
2893 | ++i; |
2894 | ||
2ec9a5e0 TT |
2895 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
2896 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
2897 | - MAYBE_SWAP (metadata[i])) | |
2898 | / 8); | |
987d643c | 2899 | ++i; |
1fd400ff | 2900 | |
f00a2de2 PA |
2901 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
2902 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
2903 | map->address_table | |
2904 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
2905 | ++i; |
2906 | ||
f00a2de2 PA |
2907 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
2908 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
2909 | map->symbol_table | |
2910 | = gdb::array_view<mapped_index::symbol_table_slot> | |
2911 | ((mapped_index::symbol_table_slot *) symbol_table, | |
2912 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 2913 | |
f00a2de2 | 2914 | ++i; |
f9d83a0b | 2915 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 2916 | |
2ec9a5e0 TT |
2917 | return 1; |
2918 | } | |
2919 | ||
4485a1c1 SM |
2920 | /* Callback types for dwarf2_read_gdb_index. */ |
2921 | ||
2922 | typedef gdb::function_view | |
2923 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_objfile *)> | |
2924 | get_gdb_index_contents_ftype; | |
2925 | typedef gdb::function_view | |
2926 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
2927 | get_gdb_index_contents_dwz_ftype; | |
2928 | ||
927aa2e7 | 2929 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
2930 | elements of all the CUs and return 1. Otherwise, return 0. */ |
2931 | ||
2932 | static int | |
4485a1c1 SM |
2933 | dwarf2_read_gdb_index |
2934 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
2935 | get_gdb_index_contents_ftype get_gdb_index_contents, | |
2936 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 2937 | { |
2ec9a5e0 TT |
2938 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
2939 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 2940 | struct dwz_file *dwz; |
12359b5e | 2941 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ec9a5e0 | 2942 | |
4485a1c1 SM |
2943 | gdb::array_view<const gdb_byte> main_index_contents |
2944 | = get_gdb_index_contents (objfile, dwarf2_per_objfile); | |
2945 | ||
2946 | if (main_index_contents.empty ()) | |
2947 | return 0; | |
2948 | ||
3063847f | 2949 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
4485a1c1 SM |
2950 | if (!read_gdb_index_from_buffer (objfile, objfile_name (objfile), |
2951 | use_deprecated_index_sections, | |
2952 | main_index_contents, map.get (), &cu_list, | |
2953 | &cu_list_elements, &types_list, | |
2954 | &types_list_elements)) | |
2ec9a5e0 TT |
2955 | return 0; |
2956 | ||
0fefef59 | 2957 | /* Don't use the index if it's empty. */ |
3063847f | 2958 | if (map->symbol_table.empty ()) |
0fefef59 DE |
2959 | return 0; |
2960 | ||
2ec9a5e0 TT |
2961 | /* If there is a .dwz file, read it so we can get its CU list as |
2962 | well. */ | |
ed2dc618 | 2963 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 2964 | if (dwz != NULL) |
2ec9a5e0 | 2965 | { |
2ec9a5e0 TT |
2966 | struct mapped_index dwz_map; |
2967 | const gdb_byte *dwz_types_ignore; | |
2968 | offset_type dwz_types_elements_ignore; | |
2969 | ||
4485a1c1 SM |
2970 | gdb::array_view<const gdb_byte> dwz_index_content |
2971 | = get_gdb_index_contents_dwz (objfile, dwz); | |
2972 | ||
2973 | if (dwz_index_content.empty ()) | |
2974 | return 0; | |
2975 | ||
2976 | if (!read_gdb_index_from_buffer (objfile, | |
00f93c44 AM |
2977 | bfd_get_filename (dwz->dwz_bfd.get ()), |
2978 | 1, dwz_index_content, &dwz_map, | |
4485a1c1 SM |
2979 | &dwz_list, &dwz_list_elements, |
2980 | &dwz_types_ignore, | |
2981 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
2982 | { |
2983 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 2984 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
2985 | return 0; |
2986 | } | |
2987 | } | |
2988 | ||
12359b5e SM |
2989 | create_cus_from_index (dwarf2_per_objfile, cu_list, cu_list_elements, |
2990 | dwz_list, dwz_list_elements); | |
1fd400ff | 2991 | |
8b70b953 TT |
2992 | if (types_list_elements) |
2993 | { | |
8b70b953 TT |
2994 | /* We can only handle a single .debug_types when we have an |
2995 | index. */ | |
fd5866f6 | 2996 | if (dwarf2_per_objfile->types.size () != 1) |
8b70b953 TT |
2997 | return 0; |
2998 | ||
fd5866f6 | 2999 | dwarf2_section_info *section = &dwarf2_per_objfile->types[0]; |
8b70b953 | 3000 | |
12359b5e SM |
3001 | create_signatured_type_table_from_index (dwarf2_per_objfile, section, |
3002 | types_list, types_list_elements); | |
8b70b953 | 3003 | } |
9291a0cd | 3004 | |
3063847f | 3005 | create_addrmap_from_index (dwarf2_per_objfile, map.get ()); |
9291a0cd | 3006 | |
3063847f | 3007 | dwarf2_per_objfile->index_table = std::move (map); |
9291a0cd | 3008 | dwarf2_per_objfile->using_index = 1; |
7b9f3c50 | 3009 | dwarf2_per_objfile->quick_file_names_table = |
b76e467d | 3010 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
9291a0cd TT |
3011 | |
3012 | return 1; | |
3013 | } | |
3014 | ||
dee91e82 | 3015 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3016 | |
dee91e82 DE |
3017 | static void |
3018 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3019 | const gdb_byte *info_ptr, |
3e225074 | 3020 | struct die_info *comp_unit_die) |
9291a0cd | 3021 | { |
dee91e82 | 3022 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3023 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
518817b3 SM |
3024 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3025 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 3026 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 3027 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3028 | struct attribute *attr; |
7b9f3c50 DE |
3029 | void **slot; |
3030 | struct quick_file_names *qfn; | |
9291a0cd | 3031 | |
0186c6a7 DE |
3032 | gdb_assert (! this_cu->is_debug_types); |
3033 | ||
07261596 TT |
3034 | /* Our callers never want to match partial units -- instead they |
3035 | will match the enclosing full CU. */ | |
3036 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3037 | { | |
3038 | this_cu->v.quick->no_file_data = 1; | |
3039 | return; | |
3040 | } | |
3041 | ||
0186c6a7 | 3042 | lh_cu = this_cu; |
7b9f3c50 | 3043 | slot = NULL; |
dee91e82 | 3044 | |
fff8551c | 3045 | line_header_up lh; |
9c541725 | 3046 | sect_offset line_offset {}; |
fff8551c | 3047 | |
dee91e82 | 3048 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
435d3d88 | 3049 | if (attr != nullptr) |
9291a0cd | 3050 | { |
7b9f3c50 DE |
3051 | struct quick_file_names find_entry; |
3052 | ||
9c541725 | 3053 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
3054 | |
3055 | /* We may have already read in this line header (TU line header sharing). | |
3056 | If we have we're done. */ | |
094b34ac | 3057 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3058 | find_entry.hash.line_sect_off = line_offset; |
5895093f | 3059 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table.get (), |
7b9f3c50 DE |
3060 | &find_entry, INSERT); |
3061 | if (*slot != NULL) | |
3062 | { | |
9a3c8263 | 3063 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3064 | return; |
7b9f3c50 DE |
3065 | } |
3066 | ||
3019eac3 | 3067 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3068 | } |
3069 | if (lh == NULL) | |
3070 | { | |
094b34ac | 3071 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3072 | return; |
9291a0cd TT |
3073 | } |
3074 | ||
8d749320 | 3075 | qfn = XOBNEW (&objfile->objfile_obstack, struct quick_file_names); |
094b34ac | 3076 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3077 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3078 | gdb_assert (slot != NULL); |
3079 | *slot = qfn; | |
9291a0cd | 3080 | |
d721ba37 | 3081 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3082 | |
aa391654 TT |
3083 | int offset = 0; |
3084 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3085 | ++offset; | |
3086 | ||
7ba99d21 | 3087 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3088 | qfn->file_names = |
aa391654 TT |
3089 | XOBNEWVEC (&objfile->objfile_obstack, const char *, qfn->num_file_names); |
3090 | if (offset != 0) | |
3091 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3092 | for (int i = 0; i < lh->file_names_size (); ++i) |
03075812 TT |
3093 | qfn->file_names[i + offset] = lh->file_full_name (i + 1, |
3094 | fnd.comp_dir).release (); | |
7b9f3c50 | 3095 | qfn->real_names = NULL; |
9291a0cd | 3096 | |
094b34ac | 3097 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3098 | } |
3099 | ||
3100 | /* A helper for the "quick" functions which attempts to read the line | |
3101 | table for THIS_CU. */ | |
3102 | ||
3103 | static struct quick_file_names * | |
e4a48d9d | 3104 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3105 | { |
0186c6a7 DE |
3106 | /* This should never be called for TUs. */ |
3107 | gdb_assert (! this_cu->is_debug_types); | |
3108 | /* Nor type unit groups. */ | |
197400e8 | 3109 | gdb_assert (! this_cu->type_unit_group_p ()); |
f4dc4d17 | 3110 | |
dee91e82 DE |
3111 | if (this_cu->v.quick->file_names != NULL) |
3112 | return this_cu->v.quick->file_names; | |
3113 | /* If we know there is no line data, no point in looking again. */ | |
3114 | if (this_cu->v.quick->no_file_data) | |
3115 | return NULL; | |
3116 | ||
c0ab21c2 TT |
3117 | cutu_reader reader (this_cu); |
3118 | if (!reader.dummy_p) | |
3e225074 | 3119 | dw2_get_file_names_reader (&reader, reader.info_ptr, reader.comp_unit_die); |
dee91e82 DE |
3120 | |
3121 | if (this_cu->v.quick->no_file_data) | |
3122 | return NULL; | |
3123 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3124 | } |
3125 | ||
3126 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3127 | real path for a given file name from the line table. */ |
2fdf6df6 | 3128 | |
9291a0cd | 3129 | static const char * |
7b9f3c50 DE |
3130 | dw2_get_real_path (struct objfile *objfile, |
3131 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3132 | { |
7b9f3c50 DE |
3133 | if (qfn->real_names == NULL) |
3134 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 3135 | qfn->num_file_names, const char *); |
9291a0cd | 3136 | |
7b9f3c50 | 3137 | if (qfn->real_names[index] == NULL) |
14278e1f | 3138 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3139 | |
7b9f3c50 | 3140 | return qfn->real_names[index]; |
9291a0cd TT |
3141 | } |
3142 | ||
3143 | static struct symtab * | |
3144 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3145 | { | |
ed2dc618 SM |
3146 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3147 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3148 | dwarf2_per_cu_data *dwarf_cu = dwarf2_per_objfile->all_comp_units.back (); |
58f0c718 | 3149 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, false); |
ae2de4f8 | 3150 | |
43f3e411 DE |
3151 | if (cust == NULL) |
3152 | return NULL; | |
ed2dc618 | 3153 | |
43f3e411 | 3154 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3155 | } |
3156 | ||
7b9f3c50 DE |
3157 | /* Traversal function for dw2_forget_cached_source_info. */ |
3158 | ||
3159 | static int | |
3160 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3161 | { |
7b9f3c50 | 3162 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3163 | |
7b9f3c50 | 3164 | if (file_data->real_names) |
9291a0cd | 3165 | { |
7b9f3c50 | 3166 | int i; |
9291a0cd | 3167 | |
7b9f3c50 | 3168 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3169 | { |
7b9f3c50 DE |
3170 | xfree ((void*) file_data->real_names[i]); |
3171 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3172 | } |
3173 | } | |
7b9f3c50 DE |
3174 | |
3175 | return 1; | |
3176 | } | |
3177 | ||
3178 | static void | |
3179 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3180 | { | |
ed2dc618 SM |
3181 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3182 | = get_dwarf2_per_objfile (objfile); | |
7b9f3c50 | 3183 | |
5895093f | 3184 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table.get (), |
7b9f3c50 | 3185 | dw2_free_cached_file_names, NULL); |
9291a0cd TT |
3186 | } |
3187 | ||
f8eba3c6 TT |
3188 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3189 | the symtabs and calls the iterator. */ | |
3190 | ||
3191 | static int | |
3192 | dw2_map_expand_apply (struct objfile *objfile, | |
3193 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3194 | const char *name, const char *real_path, |
14bc53a8 | 3195 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3196 | { |
43f3e411 | 3197 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3198 | |
3199 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 3200 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
3201 | return 0; |
3202 | ||
3203 | /* This may expand more than one symtab, and we want to iterate over | |
3204 | all of them. */ | |
58f0c718 | 3205 | dw2_instantiate_symtab (per_cu, false); |
f8eba3c6 | 3206 | |
14bc53a8 PA |
3207 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3208 | last_made, callback); | |
f8eba3c6 TT |
3209 | } |
3210 | ||
3211 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3212 | ||
14bc53a8 PA |
3213 | static bool |
3214 | dw2_map_symtabs_matching_filename | |
3215 | (struct objfile *objfile, const char *name, const char *real_path, | |
3216 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3217 | { |
c011a4f4 | 3218 | const char *name_basename = lbasename (name); |
ed2dc618 SM |
3219 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3220 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 3221 | |
848e3e78 DE |
3222 | /* The rule is CUs specify all the files, including those used by |
3223 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3224 | |
b76e467d | 3225 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 3226 | { |
3d7bb9d9 | 3227 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3228 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3229 | continue; |
3230 | ||
b76e467d | 3231 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3232 | if (file_data == NULL) |
9291a0cd TT |
3233 | continue; |
3234 | ||
b76e467d | 3235 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3236 | { |
7b9f3c50 | 3237 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3238 | const char *this_real_name; |
9291a0cd | 3239 | |
af529f8f | 3240 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3241 | { |
f5b95b50 | 3242 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3243 | callback)) |
3244 | return true; | |
288e77a7 | 3245 | continue; |
4aac40c8 | 3246 | } |
9291a0cd | 3247 | |
c011a4f4 DE |
3248 | /* Before we invoke realpath, which can get expensive when many |
3249 | files are involved, do a quick comparison of the basenames. */ | |
3250 | if (! basenames_may_differ | |
3251 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3252 | continue; | |
3253 | ||
da235a7c JK |
3254 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3255 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3256 | { |
da235a7c | 3257 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3258 | callback)) |
3259 | return true; | |
288e77a7 | 3260 | continue; |
da235a7c | 3261 | } |
9291a0cd | 3262 | |
da235a7c JK |
3263 | if (real_path != NULL) |
3264 | { | |
af529f8f JK |
3265 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3266 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3267 | if (this_real_name != NULL |
af529f8f | 3268 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3269 | { |
f5b95b50 | 3270 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3271 | callback)) |
3272 | return true; | |
288e77a7 | 3273 | continue; |
9291a0cd TT |
3274 | } |
3275 | } | |
3276 | } | |
3277 | } | |
3278 | ||
14bc53a8 | 3279 | return false; |
9291a0cd TT |
3280 | } |
3281 | ||
da51c347 DE |
3282 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3283 | ||
3284 | struct dw2_symtab_iterator | |
9291a0cd | 3285 | { |
ed2dc618 SM |
3286 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
3287 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
2b79f376 SM |
3288 | /* If set, only look for symbols that match that block. Valid values are |
3289 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3290 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3291 | /* The kind of symbol we're looking for. */ |
3292 | domain_enum domain; | |
3293 | /* The list of CUs from the index entry of the symbol, | |
3294 | or NULL if not found. */ | |
3295 | offset_type *vec; | |
3296 | /* The next element in VEC to look at. */ | |
3297 | int next; | |
3298 | /* The number of elements in VEC, or zero if there is no match. */ | |
3299 | int length; | |
8943b874 DE |
3300 | /* Have we seen a global version of the symbol? |
3301 | If so we can ignore all further global instances. | |
3302 | This is to work around gold/15646, inefficient gold-generated | |
3303 | indices. */ | |
3304 | int global_seen; | |
da51c347 | 3305 | }; |
9291a0cd | 3306 | |
2b79f376 | 3307 | /* Initialize the index symtab iterator ITER. */ |
2fdf6df6 | 3308 | |
9291a0cd | 3309 | static void |
da51c347 | 3310 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
ed2dc618 | 3311 | struct dwarf2_per_objfile *dwarf2_per_objfile, |
c7f839cb | 3312 | gdb::optional<block_enum> block_index, |
da51c347 DE |
3313 | domain_enum domain, |
3314 | const char *name) | |
3315 | { | |
ed2dc618 | 3316 | iter->dwarf2_per_objfile = dwarf2_per_objfile; |
da51c347 DE |
3317 | iter->block_index = block_index; |
3318 | iter->domain = domain; | |
3319 | iter->next = 0; | |
8943b874 | 3320 | iter->global_seen = 0; |
da51c347 | 3321 | |
3063847f | 3322 | mapped_index *index = dwarf2_per_objfile->index_table.get (); |
ed2dc618 SM |
3323 | |
3324 | /* index is NULL if OBJF_READNOW. */ | |
3325 | if (index != NULL && find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 DE |
3326 | iter->length = MAYBE_SWAP (*iter->vec); |
3327 | else | |
3328 | { | |
3329 | iter->vec = NULL; | |
3330 | iter->length = 0; | |
3331 | } | |
3332 | } | |
3333 | ||
3334 | /* Return the next matching CU or NULL if there are no more. */ | |
3335 | ||
3336 | static struct dwarf2_per_cu_data * | |
3337 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3338 | { | |
ed2dc618 SM |
3339 | struct dwarf2_per_objfile *dwarf2_per_objfile = iter->dwarf2_per_objfile; |
3340 | ||
da51c347 DE |
3341 | for ( ; iter->next < iter->length; ++iter->next) |
3342 | { | |
3343 | offset_type cu_index_and_attrs = | |
3344 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3345 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3346 | gdb_index_symbol_kind symbol_kind = |
3347 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3348 | /* Only check the symbol attributes if they're present. | |
3349 | Indices prior to version 7 don't record them, | |
3350 | and indices >= 7 may elide them for certain symbols | |
3351 | (gold does this). */ | |
3352 | int attrs_valid = | |
ed2dc618 | 3353 | (dwarf2_per_objfile->index_table->version >= 7 |
da51c347 DE |
3354 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3355 | ||
3190f0c6 | 3356 | /* Don't crash on bad data. */ |
b76e467d | 3357 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 3358 | + dwarf2_per_objfile->all_type_units.size ())) |
3190f0c6 | 3359 | { |
b98664d3 | 3360 | complaint (_(".gdb_index entry has bad CU index" |
4262abfb JK |
3361 | " [in module %s]"), |
3362 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3363 | continue; |
3364 | } | |
3365 | ||
ff4c9fec | 3366 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
3190f0c6 | 3367 | |
da51c347 | 3368 | /* Skip if already read in. */ |
43f3e411 | 3369 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
3370 | continue; |
3371 | ||
8943b874 DE |
3372 | /* Check static vs global. */ |
3373 | if (attrs_valid) | |
3374 | { | |
2b79f376 SM |
3375 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3376 | ||
3377 | if (iter->block_index.has_value ()) | |
3378 | { | |
3379 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3380 | ||
3381 | if (is_static != want_static) | |
3382 | continue; | |
3383 | } | |
3384 | ||
8943b874 DE |
3385 | /* Work around gold/15646. */ |
3386 | if (!is_static && iter->global_seen) | |
3387 | continue; | |
3388 | if (!is_static) | |
3389 | iter->global_seen = 1; | |
3390 | } | |
da51c347 DE |
3391 | |
3392 | /* Only check the symbol's kind if it has one. */ | |
3393 | if (attrs_valid) | |
3394 | { | |
3395 | switch (iter->domain) | |
3396 | { | |
3397 | case VAR_DOMAIN: | |
3398 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3399 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3400 | /* Some types are also in VAR_DOMAIN. */ | |
3401 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3402 | continue; | |
3403 | break; | |
3404 | case STRUCT_DOMAIN: | |
3405 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3406 | continue; | |
3407 | break; | |
3408 | case LABEL_DOMAIN: | |
3409 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3410 | continue; | |
3411 | break; | |
59c35742 AB |
3412 | case MODULE_DOMAIN: |
3413 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3414 | continue; | |
3415 | break; | |
da51c347 DE |
3416 | default: |
3417 | break; | |
3418 | } | |
3419 | } | |
3420 | ||
3421 | ++iter->next; | |
3422 | return per_cu; | |
3423 | } | |
3424 | ||
3425 | return NULL; | |
3426 | } | |
3427 | ||
43f3e411 | 3428 | static struct compunit_symtab * |
c7f839cb | 3429 | dw2_lookup_symbol (struct objfile *objfile, block_enum block_index, |
da51c347 | 3430 | const char *name, domain_enum domain) |
9291a0cd | 3431 | { |
43f3e411 | 3432 | struct compunit_symtab *stab_best = NULL; |
ed2dc618 SM |
3433 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3434 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 3435 | |
b5ec771e PA |
3436 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
3437 | ||
ed2dc618 SM |
3438 | struct dw2_symtab_iterator iter; |
3439 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3440 | |
2b79f376 | 3441 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, block_index, domain, name); |
9291a0cd | 3442 | |
ed2dc618 SM |
3443 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
3444 | { | |
3445 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 3446 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
ed2dc618 | 3447 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 3448 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3449 | |
ed2dc618 SM |
3450 | sym = block_find_symbol (block, name, domain, |
3451 | block_find_non_opaque_type_preferred, | |
3452 | &with_opaque); | |
b2e2f908 | 3453 | |
ed2dc618 SM |
3454 | /* Some caution must be observed with overloaded functions |
3455 | and methods, since the index will not contain any overload | |
3456 | information (but NAME might contain it). */ | |
da51c347 | 3457 | |
ed2dc618 SM |
3458 | if (sym != NULL |
3459 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
3460 | return stab; | |
3461 | if (with_opaque != NULL | |
3462 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
3463 | stab_best = stab; | |
da51c347 | 3464 | |
ed2dc618 | 3465 | /* Keep looking through other CUs. */ |
9291a0cd | 3466 | } |
9291a0cd | 3467 | |
da51c347 | 3468 | return stab_best; |
9291a0cd TT |
3469 | } |
3470 | ||
3471 | static void | |
3472 | dw2_print_stats (struct objfile *objfile) | |
3473 | { | |
ed2dc618 SM |
3474 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3475 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3476 | int total = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 3477 | + dwarf2_per_objfile->all_type_units.size ()); |
ed2dc618 | 3478 | int count = 0; |
9291a0cd | 3479 | |
ed2dc618 | 3480 | for (int i = 0; i < total; ++i) |
9291a0cd | 3481 | { |
ff4c9fec | 3482 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 3483 | |
43f3e411 | 3484 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3485 | ++count; |
3486 | } | |
e4a48d9d | 3487 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3488 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3489 | } | |
3490 | ||
779bd270 DE |
3491 | /* This dumps minimal information about the index. |
3492 | It is called via "mt print objfiles". | |
3493 | One use is to verify .gdb_index has been loaded by the | |
3494 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3495 | ||
9291a0cd TT |
3496 | static void |
3497 | dw2_dump (struct objfile *objfile) | |
3498 | { | |
ed2dc618 SM |
3499 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3500 | = get_dwarf2_per_objfile (objfile); | |
3501 | ||
779bd270 DE |
3502 | gdb_assert (dwarf2_per_objfile->using_index); |
3503 | printf_filtered (".gdb_index:"); | |
3504 | if (dwarf2_per_objfile->index_table != NULL) | |
3505 | { | |
3506 | printf_filtered (" version %d\n", | |
3507 | dwarf2_per_objfile->index_table->version); | |
3508 | } | |
3509 | else | |
3510 | printf_filtered (" faked for \"readnow\"\n"); | |
3511 | printf_filtered ("\n"); | |
9291a0cd TT |
3512 | } |
3513 | ||
9291a0cd TT |
3514 | static void |
3515 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3516 | const char *func_name) | |
3517 | { | |
ed2dc618 SM |
3518 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3519 | = get_dwarf2_per_objfile (objfile); | |
da51c347 | 3520 | |
ed2dc618 SM |
3521 | struct dw2_symtab_iterator iter; |
3522 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3523 | |
2b79f376 | 3524 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, {}, VAR_DOMAIN, func_name); |
da51c347 | 3525 | |
ed2dc618 | 3526 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
58f0c718 | 3527 | dw2_instantiate_symtab (per_cu, false); |
da51c347 | 3528 | |
9291a0cd TT |
3529 | } |
3530 | ||
3531 | static void | |
3532 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3533 | { | |
ed2dc618 SM |
3534 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3535 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3536 | int total_units = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 3537 | + dwarf2_per_objfile->all_type_units.size ()); |
9291a0cd | 3538 | |
ed2dc618 | 3539 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 3540 | { |
ff4c9fec | 3541 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 3542 | |
58f0c718 TT |
3543 | /* We don't want to directly expand a partial CU, because if we |
3544 | read it with the wrong language, then assertion failures can | |
3545 | be triggered later on. See PR symtab/23010. So, tell | |
3546 | dw2_instantiate_symtab to skip partial CUs -- any important | |
3547 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
3548 | dw2_instantiate_symtab (per_cu, true); | |
9291a0cd TT |
3549 | } |
3550 | } | |
3551 | ||
3552 | static void | |
652a8996 JK |
3553 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3554 | const char *fullname) | |
9291a0cd | 3555 | { |
ed2dc618 SM |
3556 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3557 | = get_dwarf2_per_objfile (objfile); | |
d4637a04 DE |
3558 | |
3559 | /* We don't need to consider type units here. | |
3560 | This is only called for examining code, e.g. expand_line_sal. | |
3561 | There can be an order of magnitude (or more) more type units | |
3562 | than comp units, and we avoid them if we can. */ | |
3563 | ||
b76e467d | 3564 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 3565 | { |
3d7bb9d9 | 3566 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3567 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3568 | continue; |
3569 | ||
b76e467d | 3570 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3571 | if (file_data == NULL) |
9291a0cd TT |
3572 | continue; |
3573 | ||
b76e467d | 3574 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3575 | { |
652a8996 JK |
3576 | const char *this_fullname = file_data->file_names[j]; |
3577 | ||
3578 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3579 | { |
58f0c718 | 3580 | dw2_instantiate_symtab (per_cu, false); |
9291a0cd TT |
3581 | break; |
3582 | } | |
3583 | } | |
3584 | } | |
3585 | } | |
3586 | ||
9291a0cd | 3587 | static void |
199b4314 TT |
3588 | dw2_map_matching_symbols |
3589 | (struct objfile *objfile, | |
b054970d | 3590 | const lookup_name_info &name, domain_enum domain, |
199b4314 TT |
3591 | int global, |
3592 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 3593 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 3594 | { |
1aa98955 TV |
3595 | /* Used for Ada. */ |
3596 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
3597 | = get_dwarf2_per_objfile (objfile); | |
3598 | ||
3599 | if (dwarf2_per_objfile->index_table != nullptr) | |
3600 | { | |
3601 | /* Ada currently doesn't support .gdb_index (see PR24713). We can get | |
3602 | here though if the current language is Ada for a non-Ada objfile | |
3603 | using GNU index. As Ada does not look for non-Ada symbols this | |
3604 | function should just return. */ | |
3605 | return; | |
3606 | } | |
3607 | ||
3608 | /* We have -readnow: no .gdb_index, but no partial symtabs either. So, | |
3609 | inline psym_map_matching_symbols here, assuming all partial symtabs have | |
3610 | been read in. */ | |
3611 | const int block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; | |
3612 | ||
3613 | for (compunit_symtab *cust : objfile->compunits ()) | |
3614 | { | |
3615 | const struct block *block; | |
3616 | ||
3617 | if (cust == NULL) | |
3618 | continue; | |
3619 | block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
3620 | if (!iterate_over_symbols_terminated (block, name, | |
3621 | domain, callback)) | |
3622 | return; | |
3623 | } | |
9291a0cd TT |
3624 | } |
3625 | ||
e1ef7d7a PA |
3626 | /* Starting from a search name, return the string that finds the upper |
3627 | bound of all strings that start with SEARCH_NAME in a sorted name | |
3628 | list. Returns the empty string to indicate that the upper bound is | |
3629 | the end of the list. */ | |
3630 | ||
3631 | static std::string | |
3632 | make_sort_after_prefix_name (const char *search_name) | |
3633 | { | |
3634 | /* When looking to complete "func", we find the upper bound of all | |
3635 | symbols that start with "func" by looking for where we'd insert | |
3636 | the closest string that would follow "func" in lexicographical | |
3637 | order. Usually, that's "func"-with-last-character-incremented, | |
3638 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
3639 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
3640 | Especially mind the 0xff character, which is a valid character in | |
3641 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
3642 | rule out compilers allowing it in identifiers. Note that | |
3643 | conveniently, strcmp/strcasecmp are specified to compare | |
3644 | characters interpreted as unsigned char. So what we do is treat | |
3645 | the whole string as a base 256 number composed of a sequence of | |
3646 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
3647 | to 0, and carries 1 to the following more-significant position. | |
3648 | If the very first character in SEARCH_NAME ends up incremented | |
3649 | and carries/overflows, then the upper bound is the end of the | |
3650 | list. The string after the empty string is also the empty | |
3651 | string. | |
3652 | ||
3653 | Some examples of this operation: | |
3654 | ||
3655 | SEARCH_NAME => "+1" RESULT | |
3656 | ||
3657 | "abc" => "abd" | |
3658 | "ab\xff" => "ac" | |
3659 | "\xff" "a" "\xff" => "\xff" "b" | |
3660 | "\xff" => "" | |
3661 | "\xff\xff" => "" | |
3662 | "" => "" | |
3663 | ||
3664 | Then, with these symbols for example: | |
3665 | ||
3666 | func | |
3667 | func1 | |
3668 | fund | |
3669 | ||
3670 | completing "func" looks for symbols between "func" and | |
3671 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
3672 | which finds "func" and "func1", but not "fund". | |
3673 | ||
3674 | And with: | |
3675 | ||
3676 | funcÿ (Latin1 'ÿ' [0xff]) | |
3677 | funcÿ1 | |
3678 | fund | |
3679 | ||
3680 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
3681 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
3682 | ||
3683 | And with: | |
3684 | ||
3685 | ÿÿ (Latin1 'ÿ' [0xff]) | |
3686 | ÿÿ1 | |
3687 | ||
3688 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
3689 | the end of the list. | |
3690 | */ | |
3691 | std::string after = search_name; | |
3692 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
3693 | after.pop_back (); | |
3694 | if (!after.empty ()) | |
3695 | after.back () = (unsigned char) after.back () + 1; | |
3696 | return after; | |
3697 | } | |
3698 | ||
5c58de74 | 3699 | /* See declaration. */ |
61d96d7e | 3700 | |
5c58de74 PA |
3701 | std::pair<std::vector<name_component>::const_iterator, |
3702 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 3703 | mapped_index_base::find_name_components_bounds |
3b00ef10 | 3704 | (const lookup_name_info &lookup_name_without_params, language lang) const |
3f563c84 | 3705 | { |
5c58de74 PA |
3706 | auto *name_cmp |
3707 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 3708 | |
3b00ef10 | 3709 | const char *lang_name |
e0802d59 | 3710 | = lookup_name_without_params.language_lookup_name (lang); |
9291a0cd | 3711 | |
3f563c84 PA |
3712 | /* Comparison function object for lower_bound that matches against a |
3713 | given symbol name. */ | |
3714 | auto lookup_compare_lower = [&] (const name_component &elem, | |
3715 | const char *name) | |
3716 | { | |
5c58de74 | 3717 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
3718 | const char *elem_name = elem_qualified + elem.name_offset; |
3719 | return name_cmp (elem_name, name) < 0; | |
3720 | }; | |
3721 | ||
3722 | /* Comparison function object for upper_bound that matches against a | |
3723 | given symbol name. */ | |
3724 | auto lookup_compare_upper = [&] (const char *name, | |
3725 | const name_component &elem) | |
3726 | { | |
5c58de74 | 3727 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
3728 | const char *elem_name = elem_qualified + elem.name_offset; |
3729 | return name_cmp (name, elem_name) < 0; | |
3730 | }; | |
3731 | ||
5c58de74 PA |
3732 | auto begin = this->name_components.begin (); |
3733 | auto end = this->name_components.end (); | |
3f563c84 PA |
3734 | |
3735 | /* Find the lower bound. */ | |
3736 | auto lower = [&] () | |
3737 | { | |
3b00ef10 | 3738 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
3739 | return begin; |
3740 | else | |
3b00ef10 | 3741 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
3742 | } (); |
3743 | ||
3744 | /* Find the upper bound. */ | |
3745 | auto upper = [&] () | |
3746 | { | |
5c58de74 | 3747 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 3748 | { |
e1ef7d7a PA |
3749 | /* In completion mode, we want UPPER to point past all |
3750 | symbols names that have the same prefix. I.e., with | |
3751 | these symbols, and completing "func": | |
3752 | ||
3753 | function << lower bound | |
3754 | function1 | |
3755 | other_function << upper bound | |
3756 | ||
3757 | We find the upper bound by looking for the insertion | |
3758 | point of "func"-with-last-character-incremented, | |
3759 | i.e. "fund". */ | |
3b00ef10 | 3760 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 3761 | if (after.empty ()) |
3f563c84 | 3762 | return end; |
e6b2f5ef PA |
3763 | return std::lower_bound (lower, end, after.c_str (), |
3764 | lookup_compare_lower); | |
3f563c84 PA |
3765 | } |
3766 | else | |
3b00ef10 | 3767 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
3768 | } (); |
3769 | ||
5c58de74 PA |
3770 | return {lower, upper}; |
3771 | } | |
3772 | ||
3773 | /* See declaration. */ | |
3774 | ||
3775 | void | |
44ed8f3e | 3776 | mapped_index_base::build_name_components () |
5c58de74 PA |
3777 | { |
3778 | if (!this->name_components.empty ()) | |
3779 | return; | |
3780 | ||
3781 | this->name_components_casing = case_sensitivity; | |
3782 | auto *name_cmp | |
3783 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3784 | ||
3785 | /* The code below only knows how to break apart components of C++ | |
3786 | symbol names (and other languages that use '::' as | |
3b00ef10 | 3787 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
3788 | auto count = this->symbol_name_count (); |
3789 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 3790 | { |
44ed8f3e | 3791 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
3792 | continue; |
3793 | ||
3794 | const char *name = this->symbol_name_at (idx); | |
3795 | ||
3796 | /* Add each name component to the name component table. */ | |
3797 | unsigned int previous_len = 0; | |
3b00ef10 TT |
3798 | |
3799 | if (strstr (name, "::") != nullptr) | |
3800 | { | |
3801 | for (unsigned int current_len = cp_find_first_component (name); | |
3802 | name[current_len] != '\0'; | |
3803 | current_len += cp_find_first_component (name + current_len)) | |
3804 | { | |
3805 | gdb_assert (name[current_len] == ':'); | |
3806 | this->name_components.push_back ({previous_len, idx}); | |
3807 | /* Skip the '::'. */ | |
3808 | current_len += 2; | |
3809 | previous_len = current_len; | |
3810 | } | |
3811 | } | |
3812 | else | |
5c58de74 | 3813 | { |
3b00ef10 TT |
3814 | /* Handle the Ada encoded (aka mangled) form here. */ |
3815 | for (const char *iter = strstr (name, "__"); | |
3816 | iter != nullptr; | |
3817 | iter = strstr (iter, "__")) | |
3818 | { | |
3819 | this->name_components.push_back ({previous_len, idx}); | |
3820 | iter += 2; | |
3821 | previous_len = iter - name; | |
3822 | } | |
5c58de74 | 3823 | } |
3b00ef10 | 3824 | |
5c58de74 PA |
3825 | this->name_components.push_back ({previous_len, idx}); |
3826 | } | |
3827 | ||
3828 | /* Sort name_components elements by name. */ | |
3829 | auto name_comp_compare = [&] (const name_component &left, | |
3830 | const name_component &right) | |
3831 | { | |
3832 | const char *left_qualified = this->symbol_name_at (left.idx); | |
3833 | const char *right_qualified = this->symbol_name_at (right.idx); | |
3834 | ||
3835 | const char *left_name = left_qualified + left.name_offset; | |
3836 | const char *right_name = right_qualified + right.name_offset; | |
3837 | ||
3838 | return name_cmp (left_name, right_name) < 0; | |
3839 | }; | |
3840 | ||
3841 | std::sort (this->name_components.begin (), | |
3842 | this->name_components.end (), | |
3843 | name_comp_compare); | |
3844 | } | |
3845 | ||
3846 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
3847 | mapped_index_base instead of the containing objfile. This is split |
3848 | to a separate function in order to be able to unit test the | |
3849 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 3850 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 3851 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
3852 | |
3853 | static void | |
3854 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 3855 | (mapped_index_base &index, |
5c58de74 PA |
3856 | const lookup_name_info &lookup_name_in, |
3857 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
3858 | enum search_domain kind, | |
3b00ef10 | 3859 | gdb::function_view<bool (offset_type)> match_callback) |
5c58de74 PA |
3860 | { |
3861 | lookup_name_info lookup_name_without_params | |
3862 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
3863 | |
3864 | /* Build the symbol name component sorted vector, if we haven't | |
3865 | yet. */ | |
3866 | index.build_name_components (); | |
3867 | ||
3f563c84 PA |
3868 | /* The same symbol may appear more than once in the range though. |
3869 | E.g., if we're looking for symbols that complete "w", and we have | |
3870 | a symbol named "w1::w2", we'll find the two name components for | |
3871 | that same symbol in the range. To be sure we only call the | |
3872 | callback once per symbol, we first collect the symbol name | |
3873 | indexes that matched in a temporary vector and ignore | |
3874 | duplicates. */ | |
3875 | std::vector<offset_type> matches; | |
3f563c84 | 3876 | |
3b00ef10 TT |
3877 | struct name_and_matcher |
3878 | { | |
3879 | symbol_name_matcher_ftype *matcher; | |
3880 | const std::string &name; | |
3881 | ||
3882 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 3883 | { |
3b00ef10 TT |
3884 | return matcher == other.matcher && name == other.name; |
3885 | } | |
3886 | }; | |
3887 | ||
3888 | /* A vector holding all the different symbol name matchers, for all | |
3889 | languages. */ | |
3890 | std::vector<name_and_matcher> matchers; | |
3891 | ||
3892 | for (int i = 0; i < nr_languages; i++) | |
3893 | { | |
3894 | enum language lang_e = (enum language) i; | |
3895 | ||
3896 | const language_defn *lang = language_def (lang_e); | |
3897 | symbol_name_matcher_ftype *name_matcher | |
3898 | = get_symbol_name_matcher (lang, lookup_name_without_params); | |
3f563c84 | 3899 | |
3b00ef10 TT |
3900 | name_and_matcher key { |
3901 | name_matcher, | |
3902 | lookup_name_without_params.language_lookup_name (lang_e) | |
3903 | }; | |
3904 | ||
3905 | /* Don't insert the same comparison routine more than once. | |
3906 | Note that we do this linear walk. This is not a problem in | |
3907 | practice because the number of supported languages is | |
3908 | low. */ | |
3909 | if (std::find (matchers.begin (), matchers.end (), key) | |
3910 | != matchers.end ()) | |
9291a0cd | 3911 | continue; |
3b00ef10 TT |
3912 | matchers.push_back (std::move (key)); |
3913 | ||
3914 | auto bounds | |
3915 | = index.find_name_components_bounds (lookup_name_without_params, | |
3916 | lang_e); | |
3917 | ||
3918 | /* Now for each symbol name in range, check to see if we have a name | |
3919 | match, and if so, call the MATCH_CALLBACK callback. */ | |
3920 | ||
3921 | for (; bounds.first != bounds.second; ++bounds.first) | |
3922 | { | |
3923 | const char *qualified = index.symbol_name_at (bounds.first->idx); | |
3924 | ||
3925 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
3926 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
3927 | continue; | |
9291a0cd | 3928 | |
3b00ef10 TT |
3929 | matches.push_back (bounds.first->idx); |
3930 | } | |
3f563c84 PA |
3931 | } |
3932 | ||
3933 | std::sort (matches.begin (), matches.end ()); | |
3934 | ||
3935 | /* Finally call the callback, once per match. */ | |
3936 | ULONGEST prev = -1; | |
3937 | for (offset_type idx : matches) | |
3938 | { | |
3939 | if (prev != idx) | |
3940 | { | |
3b00ef10 TT |
3941 | if (!match_callback (idx)) |
3942 | break; | |
3f563c84 PA |
3943 | prev = idx; |
3944 | } | |
3945 | } | |
3946 | ||
3947 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
3948 | (offset_type)-1 are both possible values. */ | |
3949 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
3950 | } | |
3951 | ||
c62446b1 PA |
3952 | #if GDB_SELF_TEST |
3953 | ||
3954 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
3955 | ||
a3c5fafd PA |
3956 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
3957 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
3958 | mapped_index_base interface. Builds an index from the symbol list | |
3959 | passed as parameter to the constructor. */ | |
3960 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
3961 | { |
3962 | public: | |
a3c5fafd PA |
3963 | mock_mapped_index (gdb::array_view<const char *> symbols) |
3964 | : m_symbol_table (symbols) | |
c62446b1 PA |
3965 | {} |
3966 | ||
a3c5fafd | 3967 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 3968 | |
a3c5fafd | 3969 | /* Return the number of names in the symbol table. */ |
632e107b | 3970 | size_t symbol_name_count () const override |
c62446b1 | 3971 | { |
a3c5fafd | 3972 | return m_symbol_table.size (); |
c62446b1 PA |
3973 | } |
3974 | ||
a3c5fafd | 3975 | /* Get the name of the symbol at IDX in the symbol table. */ |
632e107b | 3976 | const char *symbol_name_at (offset_type idx) const override |
a3c5fafd PA |
3977 | { |
3978 | return m_symbol_table[idx]; | |
3979 | } | |
c62446b1 | 3980 | |
a3c5fafd PA |
3981 | private: |
3982 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
3983 | }; |
3984 | ||
3985 | /* Convenience function that converts a NULL pointer to a "<null>" | |
3986 | string, to pass to print routines. */ | |
3987 | ||
3988 | static const char * | |
3989 | string_or_null (const char *str) | |
3990 | { | |
3991 | return str != NULL ? str : "<null>"; | |
3992 | } | |
3993 | ||
3994 | /* Check if a lookup_name_info built from | |
3995 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
3996 | index. EXPECTED_LIST is the list of expected matches, in expected | |
3997 | matching order. If no match expected, then an empty list is | |
3998 | specified. Returns true on success. On failure prints a warning | |
3999 | indicating the file:line that failed, and returns false. */ | |
4000 | ||
4001 | static bool | |
4002 | check_match (const char *file, int line, | |
4003 | mock_mapped_index &mock_index, | |
4004 | const char *name, symbol_name_match_type match_type, | |
4005 | bool completion_mode, | |
4006 | std::initializer_list<const char *> expected_list) | |
4007 | { | |
4008 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4009 | ||
4010 | bool matched = true; | |
4011 | ||
4012 | auto mismatch = [&] (const char *expected_str, | |
4013 | const char *got) | |
4014 | { | |
4015 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4016 | "expected=\"%s\", got=\"%s\"\n"), | |
4017 | file, line, | |
4018 | (match_type == symbol_name_match_type::FULL | |
4019 | ? "FULL" : "WILD"), | |
4020 | name, string_or_null (expected_str), string_or_null (got)); | |
4021 | matched = false; | |
4022 | }; | |
4023 | ||
4024 | auto expected_it = expected_list.begin (); | |
4025 | auto expected_end = expected_list.end (); | |
4026 | ||
a3c5fafd | 4027 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4028 | NULL, ALL_DOMAIN, |
4029 | [&] (offset_type idx) | |
4030 | { | |
a3c5fafd | 4031 | const char *matched_name = mock_index.symbol_name_at (idx); |
c62446b1 PA |
4032 | const char *expected_str |
4033 | = expected_it == expected_end ? NULL : *expected_it++; | |
4034 | ||
4035 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4036 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4037 | return true; |
c62446b1 PA |
4038 | }); |
4039 | ||
4040 | const char *expected_str | |
4041 | = expected_it == expected_end ? NULL : *expected_it++; | |
4042 | if (expected_str != NULL) | |
4043 | mismatch (expected_str, NULL); | |
4044 | ||
4045 | return matched; | |
4046 | } | |
4047 | ||
4048 | /* The symbols added to the mock mapped_index for testing (in | |
4049 | canonical form). */ | |
4050 | static const char *test_symbols[] = { | |
4051 | "function", | |
4052 | "std::bar", | |
4053 | "std::zfunction", | |
4054 | "std::zfunction2", | |
4055 | "w1::w2", | |
4056 | "ns::foo<char*>", | |
4057 | "ns::foo<int>", | |
4058 | "ns::foo<long>", | |
a20714ff PA |
4059 | "ns2::tmpl<int>::foo2", |
4060 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4061 | |
e1ef7d7a PA |
4062 | /* These are used to check that the increment-last-char in the |
4063 | matching algorithm for completion doesn't match "t1_fund" when | |
4064 | completing "t1_func". */ | |
4065 | "t1_func", | |
4066 | "t1_func1", | |
4067 | "t1_fund", | |
4068 | "t1_fund1", | |
4069 | ||
4070 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4071 | cp-name-parser understands this as a single identifier ("função" | |
4072 | is "function" in PT). */ | |
4073 | u8"u8função", | |
4074 | ||
4075 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4076 | "yfunc\377", | |
4077 | ||
4078 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4079 | "\377", | |
4080 | "\377\377123", | |
4081 | ||
c62446b1 PA |
4082 | /* A name with all sorts of complications. Starts with "z" to make |
4083 | it easier for the completion tests below. */ | |
4084 | #define Z_SYM_NAME \ | |
4085 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4086 | "::tuple<(anonymous namespace)::ui*, " \ | |
4087 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4088 | ||
4089 | Z_SYM_NAME | |
4090 | }; | |
4091 | ||
a3c5fafd PA |
4092 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4093 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4094 | in completion mode. */ | |
5c58de74 PA |
4095 | |
4096 | static bool | |
a3c5fafd | 4097 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 PA |
4098 | const char *search_name, |
4099 | gdb::array_view<const char *> expected_syms) | |
4100 | { | |
4101 | lookup_name_info lookup_name (search_name, | |
4102 | symbol_name_match_type::FULL, true); | |
4103 | ||
3b00ef10 TT |
4104 | auto bounds = index.find_name_components_bounds (lookup_name, |
4105 | language_cplus); | |
5c58de74 PA |
4106 | |
4107 | size_t distance = std::distance (bounds.first, bounds.second); | |
4108 | if (distance != expected_syms.size ()) | |
4109 | return false; | |
4110 | ||
4111 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4112 | { | |
4113 | auto nc_elem = bounds.first + exp_elem; | |
4114 | const char *qualified = index.symbol_name_at (nc_elem->idx); | |
4115 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) | |
4116 | return false; | |
4117 | } | |
4118 | ||
4119 | return true; | |
4120 | } | |
4121 | ||
4122 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4123 | method. */ | |
4124 | ||
c62446b1 | 4125 | static void |
5c58de74 PA |
4126 | test_mapped_index_find_name_component_bounds () |
4127 | { | |
4128 | mock_mapped_index mock_index (test_symbols); | |
4129 | ||
a3c5fafd | 4130 | mock_index.build_name_components (); |
5c58de74 PA |
4131 | |
4132 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4133 | method in completion mode. */ | |
4134 | { | |
4135 | static const char *expected_syms[] = { | |
4136 | "t1_func", | |
4137 | "t1_func1", | |
5c58de74 PA |
4138 | }; |
4139 | ||
a3c5fafd | 4140 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4141 | "t1_func", expected_syms)); |
4142 | } | |
4143 | ||
4144 | /* Check that the increment-last-char in the name matching algorithm | |
4145 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4146 | { | |
4147 | static const char *expected_syms1[] = { | |
4148 | "\377", | |
4149 | "\377\377123", | |
4150 | }; | |
a3c5fafd | 4151 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4152 | "\377", expected_syms1)); |
4153 | ||
4154 | static const char *expected_syms2[] = { | |
4155 | "\377\377123", | |
4156 | }; | |
a3c5fafd | 4157 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4158 | "\377\377", expected_syms2)); |
4159 | } | |
4160 | } | |
4161 | ||
4162 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4163 | ||
4164 | static void | |
4165 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4166 | { |
4167 | mock_mapped_index mock_index (test_symbols); | |
4168 | ||
4169 | /* We let all tests run until the end even if some fails, for debug | |
4170 | convenience. */ | |
4171 | bool any_mismatch = false; | |
4172 | ||
4173 | /* Create the expected symbols list (an initializer_list). Needed | |
4174 | because lists have commas, and we need to pass them to CHECK, | |
4175 | which is a macro. */ | |
4176 | #define EXPECT(...) { __VA_ARGS__ } | |
4177 | ||
4178 | /* Wrapper for check_match that passes down the current | |
4179 | __FILE__/__LINE__. */ | |
4180 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4181 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4182 | mock_index, \ | |
4183 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
4184 | EXPECTED_LIST) | |
4185 | ||
4186 | /* Identity checks. */ | |
4187 | for (const char *sym : test_symbols) | |
4188 | { | |
4189 | /* Should be able to match all existing symbols. */ | |
4190 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4191 | EXPECT (sym)); | |
4192 | ||
4193 | /* Should be able to match all existing symbols with | |
4194 | parameters. */ | |
4195 | std::string with_params = std::string (sym) + "(int)"; | |
4196 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4197 | EXPECT (sym)); | |
4198 | ||
4199 | /* Should be able to match all existing symbols with | |
4200 | parameters and qualifiers. */ | |
4201 | with_params = std::string (sym) + " ( int ) const"; | |
4202 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4203 | EXPECT (sym)); | |
4204 | ||
4205 | /* This should really find sym, but cp-name-parser.y doesn't | |
4206 | know about lvalue/rvalue qualifiers yet. */ | |
4207 | with_params = std::string (sym) + " ( int ) &&"; | |
4208 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4209 | {}); | |
4210 | } | |
4211 | ||
e1ef7d7a PA |
4212 | /* Check that the name matching algorithm for completion doesn't get |
4213 | confused with Latin1 'ÿ' / 0xff. */ | |
4214 | { | |
4215 | static const char str[] = "\377"; | |
4216 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4217 | EXPECT ("\377", "\377\377123")); | |
4218 | } | |
4219 | ||
4220 | /* Check that the increment-last-char in the matching algorithm for | |
4221 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4222 | { | |
4223 | static const char str[] = "t1_func"; | |
4224 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4225 | EXPECT ("t1_func", "t1_func1")); | |
4226 | } | |
4227 | ||
c62446b1 PA |
4228 | /* Check that completion mode works at each prefix of the expected |
4229 | symbol name. */ | |
4230 | { | |
4231 | static const char str[] = "function(int)"; | |
4232 | size_t len = strlen (str); | |
4233 | std::string lookup; | |
4234 | ||
4235 | for (size_t i = 1; i < len; i++) | |
4236 | { | |
4237 | lookup.assign (str, i); | |
4238 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4239 | EXPECT ("function")); | |
4240 | } | |
4241 | } | |
4242 | ||
4243 | /* While "w" is a prefix of both components, the match function | |
4244 | should still only be called once. */ | |
4245 | { | |
4246 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4247 | EXPECT ("w1::w2")); | |
a20714ff PA |
4248 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4249 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4250 | } |
4251 | ||
4252 | /* Same, with a "complicated" symbol. */ | |
4253 | { | |
4254 | static const char str[] = Z_SYM_NAME; | |
4255 | size_t len = strlen (str); | |
4256 | std::string lookup; | |
4257 | ||
4258 | for (size_t i = 1; i < len; i++) | |
4259 | { | |
4260 | lookup.assign (str, i); | |
4261 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4262 | EXPECT (Z_SYM_NAME)); | |
4263 | } | |
4264 | } | |
4265 | ||
4266 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4267 | { | |
4268 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4269 | {}); | |
4270 | } | |
4271 | ||
4272 | /* A complete symbol with parameters matches any overload, since the | |
4273 | index has no overload info. */ | |
4274 | { | |
4275 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4276 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4277 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4278 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4279 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4280 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4281 | } |
4282 | ||
4283 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4284 | template argument list. */ | |
4285 | { | |
4286 | static const char expected[] = "ns::foo<int>"; | |
4287 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4288 | EXPECT (expected)); | |
a20714ff PA |
4289 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4290 | EXPECT (expected)); | |
c62446b1 PA |
4291 | } |
4292 | ||
4293 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4294 | template argument list that includes a pointer. */ | |
4295 | { | |
4296 | static const char expected[] = "ns::foo<char*>"; | |
4297 | /* Try both completion and non-completion modes. */ | |
4298 | static const bool completion_mode[2] = {false, true}; | |
4299 | for (size_t i = 0; i < 2; i++) | |
4300 | { | |
4301 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4302 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4303 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4304 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4305 | |
4306 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4307 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4308 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4309 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4310 | } |
4311 | } | |
4312 | ||
4313 | { | |
4314 | /* Check method qualifiers are ignored. */ | |
4315 | static const char expected[] = "ns::foo<char*>"; | |
4316 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4317 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4318 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4319 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4320 | CHECK_MATCH ("foo < char * > ( int ) const", |
4321 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4322 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4323 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4324 | } |
4325 | ||
4326 | /* Test lookup names that don't match anything. */ | |
4327 | { | |
a20714ff PA |
4328 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4329 | {}); | |
4330 | ||
c62446b1 PA |
4331 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4332 | {}); | |
4333 | } | |
4334 | ||
a20714ff PA |
4335 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4336 | which should not be confused with a parameter list. */ | |
4337 | { | |
4338 | static const char *syms[] = { | |
4339 | "A::B::C", | |
4340 | "B::C", | |
4341 | "C", | |
4342 | "A :: B :: C ( int )", | |
4343 | "B :: C ( int )", | |
4344 | "C ( int )", | |
4345 | }; | |
4346 | ||
4347 | for (const char *s : syms) | |
4348 | { | |
4349 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4350 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4351 | } | |
4352 | } | |
4353 | ||
4354 | { | |
4355 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4356 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4357 | EXPECT (expected)); | |
4358 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4359 | EXPECT (expected)); | |
4360 | } | |
4361 | ||
c62446b1 PA |
4362 | SELF_CHECK (!any_mismatch); |
4363 | ||
4364 | #undef EXPECT | |
4365 | #undef CHECK_MATCH | |
4366 | } | |
4367 | ||
5c58de74 PA |
4368 | static void |
4369 | run_test () | |
4370 | { | |
4371 | test_mapped_index_find_name_component_bounds (); | |
4372 | test_dw2_expand_symtabs_matching_symbol (); | |
4373 | } | |
4374 | ||
c62446b1 PA |
4375 | }} // namespace selftests::dw2_expand_symtabs_matching |
4376 | ||
4377 | #endif /* GDB_SELF_TEST */ | |
4378 | ||
4b514bc8 JK |
4379 | /* If FILE_MATCHER is NULL or if PER_CU has |
4380 | dwarf2_per_cu_quick_data::MARK set (see | |
4381 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4382 | EXPANSION_NOTIFY on it. */ | |
4383 | ||
4384 | static void | |
4385 | dw2_expand_symtabs_matching_one | |
4386 | (struct dwarf2_per_cu_data *per_cu, | |
4387 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
4388 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4389 | { | |
4390 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4391 | { | |
4392 | bool symtab_was_null | |
4393 | = (per_cu->v.quick->compunit_symtab == NULL); | |
4394 | ||
58f0c718 | 4395 | dw2_instantiate_symtab (per_cu, false); |
4b514bc8 JK |
4396 | |
4397 | if (expansion_notify != NULL | |
4398 | && symtab_was_null | |
4399 | && per_cu->v.quick->compunit_symtab != NULL) | |
4400 | expansion_notify (per_cu->v.quick->compunit_symtab); | |
4401 | } | |
4402 | } | |
4403 | ||
3f563c84 PA |
4404 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4405 | matched, to expand corresponding CUs that were marked. IDX is the | |
4406 | index of the symbol name that matched. */ | |
4407 | ||
4408 | static void | |
4409 | dw2_expand_marked_cus | |
ed2dc618 | 4410 | (struct dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, |
3f563c84 PA |
4411 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4412 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4413 | search_domain kind) | |
4414 | { | |
3f563c84 PA |
4415 | offset_type *vec, vec_len, vec_idx; |
4416 | bool global_seen = false; | |
ed2dc618 | 4417 | mapped_index &index = *dwarf2_per_objfile->index_table; |
3f563c84 | 4418 | |
61920122 | 4419 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 4420 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
4421 | vec_len = MAYBE_SWAP (vec[0]); |
4422 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4423 | { | |
61920122 PA |
4424 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
4425 | /* This value is only valid for index versions >= 7. */ | |
4426 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4427 | gdb_index_symbol_kind symbol_kind = | |
4428 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4429 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4430 | /* Only check the symbol attributes if they're present. | |
4431 | Indices prior to version 7 don't record them, | |
4432 | and indices >= 7 may elide them for certain symbols | |
4433 | (gold does this). */ | |
4434 | int attrs_valid = | |
4435 | (index.version >= 7 | |
4436 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4437 | ||
4438 | /* Work around gold/15646. */ | |
4439 | if (attrs_valid) | |
9291a0cd | 4440 | { |
61920122 PA |
4441 | if (!is_static && global_seen) |
4442 | continue; | |
4443 | if (!is_static) | |
4444 | global_seen = true; | |
4445 | } | |
3190f0c6 | 4446 | |
61920122 PA |
4447 | /* Only check the symbol's kind if it has one. */ |
4448 | if (attrs_valid) | |
4449 | { | |
4450 | switch (kind) | |
8943b874 | 4451 | { |
61920122 PA |
4452 | case VARIABLES_DOMAIN: |
4453 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4454 | continue; | |
4455 | break; | |
4456 | case FUNCTIONS_DOMAIN: | |
4457 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4458 | continue; |
61920122 PA |
4459 | break; |
4460 | case TYPES_DOMAIN: | |
4461 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4462 | continue; | |
4463 | break; | |
59c35742 AB |
4464 | case MODULES_DOMAIN: |
4465 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4466 | continue; | |
4467 | break; | |
61920122 PA |
4468 | default: |
4469 | break; | |
8943b874 | 4470 | } |
61920122 | 4471 | } |
8943b874 | 4472 | |
61920122 | 4473 | /* Don't crash on bad data. */ |
b76e467d | 4474 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4475 | + dwarf2_per_objfile->all_type_units.size ())) |
61920122 | 4476 | { |
b98664d3 | 4477 | complaint (_(".gdb_index entry has bad CU index" |
ed2dc618 SM |
4478 | " [in module %s]"), |
4479 | objfile_name (dwarf2_per_objfile->objfile)); | |
61920122 PA |
4480 | continue; |
4481 | } | |
4482 | ||
ff4c9fec | 4483 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
4b514bc8 JK |
4484 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, |
4485 | expansion_notify); | |
61920122 PA |
4486 | } |
4487 | } | |
4488 | ||
4b514bc8 JK |
4489 | /* If FILE_MATCHER is non-NULL, set all the |
4490 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4491 | that match FILE_MATCHER. */ | |
4492 | ||
61920122 | 4493 | static void |
4b514bc8 | 4494 | dw_expand_symtabs_matching_file_matcher |
ed2dc618 SM |
4495 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4496 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) | |
61920122 | 4497 | { |
4b514bc8 | 4498 | if (file_matcher == NULL) |
61920122 PA |
4499 | return; |
4500 | ||
4b514bc8 JK |
4501 | objfile *const objfile = dwarf2_per_objfile->objfile; |
4502 | ||
4503 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, | |
4504 | htab_eq_pointer, | |
4505 | NULL, xcalloc, xfree)); | |
4506 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4507 | htab_eq_pointer, |
4508 | NULL, xcalloc, xfree)); | |
61920122 | 4509 | |
4b514bc8 JK |
4510 | /* The rule is CUs specify all the files, including those used by |
4511 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4512 | |
b76e467d | 4513 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 4514 | { |
927aa2e7 JK |
4515 | QUIT; |
4516 | ||
4517 | per_cu->v.quick->mark = 0; | |
4518 | ||
4519 | /* We only need to look at symtabs not already expanded. */ | |
4520 | if (per_cu->v.quick->compunit_symtab) | |
4521 | continue; | |
4522 | ||
b76e467d | 4523 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
4524 | if (file_data == NULL) |
4525 | continue; | |
4526 | ||
4527 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4528 | continue; | |
4529 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4530 | { | |
4531 | per_cu->v.quick->mark = 1; | |
4532 | continue; | |
4533 | } | |
4534 | ||
b76e467d | 4535 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4536 | { |
4537 | const char *this_real_name; | |
4538 | ||
4539 | if (file_matcher (file_data->file_names[j], false)) | |
4540 | { | |
4541 | per_cu->v.quick->mark = 1; | |
4542 | break; | |
4543 | } | |
4544 | ||
4545 | /* Before we invoke realpath, which can get expensive when many | |
4546 | files are involved, do a quick comparison of the basenames. */ | |
4547 | if (!basenames_may_differ | |
4548 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4549 | true)) | |
4550 | continue; | |
4551 | ||
4552 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
4553 | if (file_matcher (this_real_name, false)) | |
4554 | { | |
4555 | per_cu->v.quick->mark = 1; | |
4556 | break; | |
4557 | } | |
4558 | } | |
4559 | ||
b76e467d SM |
4560 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4561 | ? visited_found.get () | |
4562 | : visited_not_found.get (), | |
4563 | file_data, INSERT); | |
927aa2e7 JK |
4564 | *slot = file_data; |
4565 | } | |
4566 | } | |
4567 | ||
4568 | static void | |
4569 | dw2_expand_symtabs_matching | |
4570 | (struct objfile *objfile, | |
4571 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
4572 | const lookup_name_info &lookup_name, | |
4573 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4574 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4575 | enum search_domain kind) | |
4576 | { | |
ed2dc618 SM |
4577 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4578 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
4579 | |
4580 | /* index_table is NULL if OBJF_READNOW. */ | |
4581 | if (!dwarf2_per_objfile->index_table) | |
4582 | return; | |
4583 | ||
ed2dc618 | 4584 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
927aa2e7 JK |
4585 | |
4586 | mapped_index &index = *dwarf2_per_objfile->index_table; | |
4587 | ||
4588 | dw2_expand_symtabs_matching_symbol (index, lookup_name, | |
4589 | symbol_matcher, | |
4590 | kind, [&] (offset_type idx) | |
4591 | { | |
ed2dc618 | 4592 | dw2_expand_marked_cus (dwarf2_per_objfile, idx, file_matcher, |
927aa2e7 | 4593 | expansion_notify, kind); |
3b00ef10 | 4594 | return true; |
927aa2e7 JK |
4595 | }); |
4596 | } | |
4597 | ||
4598 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
4599 | symtab. */ | |
4600 | ||
4601 | static struct compunit_symtab * | |
4602 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4603 | CORE_ADDR pc) | |
4604 | { | |
4605 | int i; | |
4606 | ||
4607 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
4608 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4609 | return cust; | |
4610 | ||
4611 | if (cust->includes == NULL) | |
4612 | return NULL; | |
4613 | ||
4614 | for (i = 0; cust->includes[i]; ++i) | |
4615 | { | |
4616 | struct compunit_symtab *s = cust->includes[i]; | |
4617 | ||
4618 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
4619 | if (s != NULL) | |
4620 | return s; | |
4621 | } | |
4622 | ||
4623 | return NULL; | |
4624 | } | |
4625 | ||
4626 | static struct compunit_symtab * | |
4627 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4628 | struct bound_minimal_symbol msymbol, | |
4629 | CORE_ADDR pc, | |
4630 | struct obj_section *section, | |
4631 | int warn_if_readin) | |
4632 | { | |
4633 | struct dwarf2_per_cu_data *data; | |
4634 | struct compunit_symtab *result; | |
4635 | ||
d320c2b5 | 4636 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
4637 | return NULL; |
4638 | ||
b3b3bada | 4639 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
d320c2b5 TT |
4640 | data = (struct dwarf2_per_cu_data *) addrmap_find |
4641 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
4642 | if (!data) |
4643 | return NULL; | |
4644 | ||
4645 | if (warn_if_readin && data->v.quick->compunit_symtab) | |
4646 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), | |
4647 | paddress (get_objfile_arch (objfile), pc)); | |
4648 | ||
4649 | result | |
58f0c718 TT |
4650 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data, |
4651 | false), | |
927aa2e7 JK |
4652 | pc); |
4653 | gdb_assert (result != NULL); | |
4654 | return result; | |
4655 | } | |
4656 | ||
4657 | static void | |
4658 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
4659 | void *data, int need_fullname) | |
4660 | { | |
ed2dc618 SM |
4661 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4662 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
4663 | |
4664 | if (!dwarf2_per_objfile->filenames_cache) | |
4665 | { | |
4666 | dwarf2_per_objfile->filenames_cache.emplace (); | |
4667 | ||
4668 | htab_up visited (htab_create_alloc (10, | |
4669 | htab_hash_pointer, htab_eq_pointer, | |
4670 | NULL, xcalloc, xfree)); | |
4671 | ||
4672 | /* The rule is CUs specify all the files, including those used | |
4673 | by any TU, so there's no need to scan TUs here. We can | |
4674 | ignore file names coming from already-expanded CUs. */ | |
4675 | ||
b76e467d | 4676 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 4677 | { |
927aa2e7 JK |
4678 | if (per_cu->v.quick->compunit_symtab) |
4679 | { | |
4680 | void **slot = htab_find_slot (visited.get (), | |
4681 | per_cu->v.quick->file_names, | |
4682 | INSERT); | |
4683 | ||
4684 | *slot = per_cu->v.quick->file_names; | |
4685 | } | |
4686 | } | |
4687 | ||
b76e467d | 4688 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 4689 | { |
927aa2e7 JK |
4690 | /* We only need to look at symtabs not already expanded. */ |
4691 | if (per_cu->v.quick->compunit_symtab) | |
4692 | continue; | |
4693 | ||
b76e467d | 4694 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
4695 | if (file_data == NULL) |
4696 | continue; | |
4697 | ||
b76e467d | 4698 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
4699 | if (*slot) |
4700 | { | |
4701 | /* Already visited. */ | |
4702 | continue; | |
4703 | } | |
4704 | *slot = file_data; | |
4705 | ||
4706 | for (int j = 0; j < file_data->num_file_names; ++j) | |
4707 | { | |
4708 | const char *filename = file_data->file_names[j]; | |
4709 | dwarf2_per_objfile->filenames_cache->seen (filename); | |
4710 | } | |
4711 | } | |
4712 | } | |
4713 | ||
4714 | dwarf2_per_objfile->filenames_cache->traverse ([&] (const char *filename) | |
4715 | { | |
4716 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
4717 | ||
4718 | if (need_fullname) | |
4719 | this_real_name = gdb_realpath (filename); | |
4720 | (*fun) (filename, this_real_name.get (), data); | |
4721 | }); | |
4722 | } | |
4723 | ||
4724 | static int | |
4725 | dw2_has_symbols (struct objfile *objfile) | |
4726 | { | |
4727 | return 1; | |
4728 | } | |
4729 | ||
4730 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4731 | { | |
4732 | dw2_has_symbols, | |
4733 | dw2_find_last_source_symtab, | |
4734 | dw2_forget_cached_source_info, | |
4735 | dw2_map_symtabs_matching_filename, | |
4736 | dw2_lookup_symbol, | |
d3214198 | 4737 | NULL, |
927aa2e7 JK |
4738 | dw2_print_stats, |
4739 | dw2_dump, | |
927aa2e7 JK |
4740 | dw2_expand_symtabs_for_function, |
4741 | dw2_expand_all_symtabs, | |
4742 | dw2_expand_symtabs_with_fullname, | |
4743 | dw2_map_matching_symbols, | |
4744 | dw2_expand_symtabs_matching, | |
4745 | dw2_find_pc_sect_compunit_symtab, | |
4746 | NULL, | |
4747 | dw2_map_symbol_filenames | |
4748 | }; | |
4749 | ||
4750 | /* DWARF-5 debug_names reader. */ | |
4751 | ||
4752 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
4753 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
4754 | ||
4755 | /* A helper function that reads the .debug_names section in SECTION | |
4756 | and fills in MAP. FILENAME is the name of the file containing the | |
4757 | section; it is used for error reporting. | |
4758 | ||
4759 | Returns true if all went well, false otherwise. */ | |
4760 | ||
4761 | static bool | |
4762 | read_debug_names_from_section (struct objfile *objfile, | |
4763 | const char *filename, | |
4764 | struct dwarf2_section_info *section, | |
4765 | mapped_debug_names &map) | |
4766 | { | |
96b79293 | 4767 | if (section->empty ()) |
927aa2e7 JK |
4768 | return false; |
4769 | ||
4770 | /* Older elfutils strip versions could keep the section in the main | |
4771 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 4772 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
4773 | return false; |
4774 | ||
96b79293 | 4775 | section->read (objfile); |
927aa2e7 JK |
4776 | |
4777 | map.dwarf5_byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
4778 | ||
4779 | const gdb_byte *addr = section->buffer; | |
4780 | ||
96b79293 | 4781 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
4782 | |
4783 | unsigned int bytes_read; | |
4784 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
4785 | addr += bytes_read; | |
4786 | ||
4787 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
4788 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
4789 | if (bytes_read + length != section->size) | |
4790 | { | |
4791 | /* There may be multiple per-CU indices. */ | |
4792 | warning (_("Section .debug_names in %s length %s does not match " | |
4793 | "section length %s, ignoring .debug_names."), | |
4794 | filename, plongest (bytes_read + length), | |
4795 | pulongest (section->size)); | |
4796 | return false; | |
4797 | } | |
4798 | ||
4799 | /* The version number. */ | |
4800 | uint16_t version = read_2_bytes (abfd, addr); | |
4801 | addr += 2; | |
4802 | if (version != 5) | |
4803 | { | |
4804 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
4805 | "ignoring .debug_names."), | |
4806 | filename, version); | |
4807 | return false; | |
4808 | } | |
4809 | ||
4810 | /* Padding. */ | |
4811 | uint16_t padding = read_2_bytes (abfd, addr); | |
4812 | addr += 2; | |
4813 | if (padding != 0) | |
4814 | { | |
4815 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
4816 | "ignoring .debug_names."), | |
4817 | filename, padding); | |
4818 | return false; | |
4819 | } | |
4820 | ||
4821 | /* comp_unit_count - The number of CUs in the CU list. */ | |
4822 | map.cu_count = read_4_bytes (abfd, addr); | |
4823 | addr += 4; | |
4824 | ||
4825 | /* local_type_unit_count - The number of TUs in the local TU | |
4826 | list. */ | |
4827 | map.tu_count = read_4_bytes (abfd, addr); | |
4828 | addr += 4; | |
4829 | ||
4830 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
4831 | list. */ | |
4832 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
4833 | addr += 4; | |
4834 | if (foreign_tu_count != 0) | |
4835 | { | |
4836 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
4837 | "ignoring .debug_names."), | |
4838 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
4839 | return false; | |
4840 | } | |
4841 | ||
4842 | /* bucket_count - The number of hash buckets in the hash lookup | |
4843 | table. */ | |
4844 | map.bucket_count = read_4_bytes (abfd, addr); | |
4845 | addr += 4; | |
4846 | ||
4847 | /* name_count - The number of unique names in the index. */ | |
4848 | map.name_count = read_4_bytes (abfd, addr); | |
4849 | addr += 4; | |
4850 | ||
4851 | /* abbrev_table_size - The size in bytes of the abbreviations | |
4852 | table. */ | |
4853 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
4854 | addr += 4; | |
4855 | ||
4856 | /* augmentation_string_size - The size in bytes of the augmentation | |
4857 | string. This value is rounded up to a multiple of 4. */ | |
4858 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
4859 | addr += 4; | |
4860 | map.augmentation_is_gdb = ((augmentation_string_size | |
4861 | == sizeof (dwarf5_augmentation)) | |
4862 | && memcmp (addr, dwarf5_augmentation, | |
4863 | sizeof (dwarf5_augmentation)) == 0); | |
4864 | augmentation_string_size += (-augmentation_string_size) & 3; | |
4865 | addr += augmentation_string_size; | |
4866 | ||
4867 | /* List of CUs */ | |
4868 | map.cu_table_reordered = addr; | |
4869 | addr += map.cu_count * map.offset_size; | |
4870 | ||
4871 | /* List of Local TUs */ | |
4872 | map.tu_table_reordered = addr; | |
4873 | addr += map.tu_count * map.offset_size; | |
4874 | ||
4875 | /* Hash Lookup Table */ | |
4876 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
4877 | addr += map.bucket_count * 4; | |
4878 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
4879 | addr += map.name_count * 4; | |
4880 | ||
4881 | /* Name Table */ | |
4882 | map.name_table_string_offs_reordered = addr; | |
4883 | addr += map.name_count * map.offset_size; | |
4884 | map.name_table_entry_offs_reordered = addr; | |
4885 | addr += map.name_count * map.offset_size; | |
4886 | ||
4887 | const gdb_byte *abbrev_table_start = addr; | |
4888 | for (;;) | |
4889 | { | |
927aa2e7 JK |
4890 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
4891 | addr += bytes_read; | |
4892 | if (index_num == 0) | |
4893 | break; | |
4894 | ||
4895 | const auto insertpair | |
4896 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
4897 | if (!insertpair.second) | |
4898 | { | |
4899 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
4900 | "ignoring .debug_names."), | |
4901 | filename, pulongest (index_num)); | |
4902 | return false; | |
4903 | } | |
4904 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
4905 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4906 | addr += bytes_read; | |
4907 | ||
4908 | for (;;) | |
4909 | { | |
4910 | mapped_debug_names::index_val::attr attr; | |
4911 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4912 | addr += bytes_read; | |
4913 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4914 | addr += bytes_read; | |
4915 | if (attr.form == DW_FORM_implicit_const) | |
4916 | { | |
4917 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
4918 | &bytes_read); | |
4919 | addr += bytes_read; | |
4920 | } | |
4921 | if (attr.dw_idx == 0 && attr.form == 0) | |
4922 | break; | |
4923 | indexval.attr_vec.push_back (std::move (attr)); | |
4924 | } | |
4925 | } | |
4926 | if (addr != abbrev_table_start + abbrev_table_size) | |
4927 | { | |
4928 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
4929 | "of size %s vs. written as %u, ignoring .debug_names."), |
4930 | filename, plongest (addr - abbrev_table_start), | |
4931 | abbrev_table_size); | |
927aa2e7 JK |
4932 | return false; |
4933 | } | |
4934 | map.entry_pool = addr; | |
4935 | ||
4936 | return true; | |
4937 | } | |
4938 | ||
4939 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
4940 | list. */ | |
4941 | ||
4942 | static void | |
ed2dc618 | 4943 | create_cus_from_debug_names_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
4944 | const mapped_debug_names &map, |
4945 | dwarf2_section_info §ion, | |
b76e467d | 4946 | bool is_dwz) |
927aa2e7 JK |
4947 | { |
4948 | sect_offset sect_off_prev; | |
4949 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
4950 | { | |
4951 | sect_offset sect_off_next; | |
4952 | if (i < map.cu_count) | |
4953 | { | |
4954 | sect_off_next | |
4955 | = (sect_offset) (extract_unsigned_integer | |
4956 | (map.cu_table_reordered + i * map.offset_size, | |
4957 | map.offset_size, | |
4958 | map.dwarf5_byte_order)); | |
4959 | } | |
4960 | else | |
4961 | sect_off_next = (sect_offset) section.size; | |
4962 | if (i >= 1) | |
4963 | { | |
4964 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 4965 | dwarf2_per_cu_data *per_cu |
ed2dc618 | 4966 | = create_cu_from_index_list (dwarf2_per_objfile, §ion, is_dwz, |
927aa2e7 | 4967 | sect_off_prev, length); |
b76e467d | 4968 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
4969 | } |
4970 | sect_off_prev = sect_off_next; | |
4971 | } | |
4972 | } | |
4973 | ||
4974 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 4975 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
4976 | |
4977 | static void | |
ed2dc618 | 4978 | create_cus_from_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
4979 | const mapped_debug_names &map, |
4980 | const mapped_debug_names &dwz_map) | |
4981 | { | |
b76e467d SM |
4982 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
4983 | dwarf2_per_objfile->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 4984 | |
ed2dc618 SM |
4985 | create_cus_from_debug_names_list (dwarf2_per_objfile, map, |
4986 | dwarf2_per_objfile->info, | |
b76e467d | 4987 | false /* is_dwz */); |
927aa2e7 JK |
4988 | |
4989 | if (dwz_map.cu_count == 0) | |
4990 | return; | |
4991 | ||
ed2dc618 SM |
4992 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4993 | create_cus_from_debug_names_list (dwarf2_per_objfile, dwz_map, dwz->info, | |
b76e467d | 4994 | true /* is_dwz */); |
927aa2e7 JK |
4995 | } |
4996 | ||
4997 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
4998 | elements of all the CUs and return true. Otherwise, return false. */ | |
4999 | ||
5000 | static bool | |
ed2dc618 | 5001 | dwarf2_read_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile) |
927aa2e7 | 5002 | { |
22ca247e TT |
5003 | std::unique_ptr<mapped_debug_names> map |
5004 | (new mapped_debug_names (dwarf2_per_objfile)); | |
ed2dc618 SM |
5005 | mapped_debug_names dwz_map (dwarf2_per_objfile); |
5006 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
927aa2e7 JK |
5007 | |
5008 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
5009 | &dwarf2_per_objfile->debug_names, | |
22ca247e | 5010 | *map)) |
927aa2e7 JK |
5011 | return false; |
5012 | ||
5013 | /* Don't use the index if it's empty. */ | |
22ca247e | 5014 | if (map->name_count == 0) |
927aa2e7 JK |
5015 | return false; |
5016 | ||
5017 | /* If there is a .dwz file, read it so we can get its CU list as | |
5018 | well. */ | |
ed2dc618 | 5019 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
927aa2e7 JK |
5020 | if (dwz != NULL) |
5021 | { | |
5022 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5023 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5024 | &dwz->debug_names, dwz_map)) |
5025 | { | |
5026 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5027 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5028 | return false; |
5029 | } | |
5030 | } | |
5031 | ||
22ca247e | 5032 | create_cus_from_debug_names (dwarf2_per_objfile, *map, dwz_map); |
927aa2e7 | 5033 | |
22ca247e | 5034 | if (map->tu_count != 0) |
927aa2e7 JK |
5035 | { |
5036 | /* We can only handle a single .debug_types when we have an | |
5037 | index. */ | |
fd5866f6 | 5038 | if (dwarf2_per_objfile->types.size () != 1) |
927aa2e7 JK |
5039 | return false; |
5040 | ||
fd5866f6 | 5041 | dwarf2_section_info *section = &dwarf2_per_objfile->types[0]; |
927aa2e7 JK |
5042 | |
5043 | create_signatured_type_table_from_debug_names | |
22ca247e | 5044 | (dwarf2_per_objfile, *map, section, &dwarf2_per_objfile->abbrev); |
927aa2e7 JK |
5045 | } |
5046 | ||
ed2dc618 SM |
5047 | create_addrmap_from_aranges (dwarf2_per_objfile, |
5048 | &dwarf2_per_objfile->debug_aranges); | |
927aa2e7 | 5049 | |
22ca247e | 5050 | dwarf2_per_objfile->debug_names_table = std::move (map); |
927aa2e7 JK |
5051 | dwarf2_per_objfile->using_index = 1; |
5052 | dwarf2_per_objfile->quick_file_names_table = | |
b76e467d | 5053 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
927aa2e7 JK |
5054 | |
5055 | return true; | |
5056 | } | |
5057 | ||
927aa2e7 JK |
5058 | /* Type used to manage iterating over all CUs looking for a symbol for |
5059 | .debug_names. */ | |
5060 | ||
5061 | class dw2_debug_names_iterator | |
5062 | { | |
5063 | public: | |
927aa2e7 | 5064 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5065 | gdb::optional<block_enum> block_index, |
5066 | domain_enum domain, | |
927aa2e7 | 5067 | const char *name) |
2b79f376 | 5068 | : m_map (map), m_block_index (block_index), m_domain (domain), |
927aa2e7 JK |
5069 | m_addr (find_vec_in_debug_names (map, name)) |
5070 | {} | |
5071 | ||
5072 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5073 | search_domain search, uint32_t namei) | |
5074 | : m_map (map), | |
5075 | m_search (search), | |
5076 | m_addr (find_vec_in_debug_names (map, namei)) | |
5077 | {} | |
5078 | ||
3b00ef10 TT |
5079 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5080 | block_enum block_index, domain_enum domain, | |
5081 | uint32_t namei) | |
5082 | : m_map (map), m_block_index (block_index), m_domain (domain), | |
5083 | m_addr (find_vec_in_debug_names (map, namei)) | |
5084 | {} | |
5085 | ||
927aa2e7 JK |
5086 | /* Return the next matching CU or NULL if there are no more. */ |
5087 | dwarf2_per_cu_data *next (); | |
5088 | ||
5089 | private: | |
5090 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5091 | const char *name); | |
5092 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5093 | uint32_t namei); | |
5094 | ||
5095 | /* The internalized form of .debug_names. */ | |
5096 | const mapped_debug_names &m_map; | |
5097 | ||
2b79f376 SM |
5098 | /* If set, only look for symbols that match that block. Valid values are |
5099 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5100 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5101 | |
5102 | /* The kind of symbol we're looking for. */ | |
5103 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5104 | const search_domain m_search = ALL_DOMAIN; | |
5105 | ||
5106 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5107 | not found. */ | |
5108 | const gdb_byte *m_addr; | |
5109 | }; | |
5110 | ||
5111 | const char * | |
5112 | mapped_debug_names::namei_to_name (uint32_t namei) const | |
5113 | { | |
5114 | const ULONGEST namei_string_offs | |
5115 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5116 | + namei * offset_size), | |
5117 | offset_size, | |
5118 | dwarf5_byte_order); | |
4f44ae6c TT |
5119 | return read_indirect_string_at_offset (dwarf2_per_objfile, |
5120 | namei_string_offs); | |
927aa2e7 JK |
5121 | } |
5122 | ||
5123 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5124 | found, return pointer to its pool data. If NAME cannot be found, | |
5125 | return NULL. */ | |
5126 | ||
5127 | const gdb_byte * | |
5128 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5129 | (const mapped_debug_names &map, const char *name) | |
5130 | { | |
5131 | int (*cmp) (const char *, const char *); | |
5132 | ||
54ee4252 | 5133 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5134 | if (current_language->la_language == language_cplus |
5135 | || current_language->la_language == language_fortran | |
5136 | || current_language->la_language == language_d) | |
5137 | { | |
5138 | /* NAME is already canonical. Drop any qualifiers as | |
5139 | .debug_names does not contain any. */ | |
5140 | ||
5141 | if (strchr (name, '(') != NULL) | |
5142 | { | |
54ee4252 | 5143 | without_params = cp_remove_params (name); |
927aa2e7 | 5144 | if (without_params != NULL) |
54ee4252 | 5145 | name = without_params.get (); |
927aa2e7 JK |
5146 | } |
5147 | } | |
5148 | ||
5149 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5150 | ||
5151 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5152 | uint32_t namei | |
5153 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5154 | (map.bucket_table_reordered | |
5155 | + (full_hash % map.bucket_count)), 4, | |
5156 | map.dwarf5_byte_order); | |
5157 | if (namei == 0) | |
5158 | return NULL; | |
5159 | --namei; | |
5160 | if (namei >= map.name_count) | |
5161 | { | |
b98664d3 | 5162 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5163 | "[in module %s]"), |
5164 | namei, map.name_count, | |
ed2dc618 | 5165 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5166 | return NULL; |
5167 | } | |
5168 | ||
5169 | for (;;) | |
5170 | { | |
5171 | const uint32_t namei_full_hash | |
5172 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5173 | (map.hash_table_reordered + namei), 4, | |
5174 | map.dwarf5_byte_order); | |
5175 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5176 | return NULL; | |
5177 | ||
5178 | if (full_hash == namei_full_hash) | |
5179 | { | |
5180 | const char *const namei_string = map.namei_to_name (namei); | |
5181 | ||
5182 | #if 0 /* An expensive sanity check. */ | |
5183 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5184 | { | |
b98664d3 | 5185 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5186 | "[in module %s]"), |
5187 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5188 | return NULL; | |
5189 | } | |
5190 | #endif | |
5191 | ||
5192 | if (cmp (namei_string, name) == 0) | |
5193 | { | |
5194 | const ULONGEST namei_entry_offs | |
5195 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5196 | + namei * map.offset_size), | |
5197 | map.offset_size, map.dwarf5_byte_order); | |
5198 | return map.entry_pool + namei_entry_offs; | |
5199 | } | |
5200 | } | |
5201 | ||
5202 | ++namei; | |
5203 | if (namei >= map.name_count) | |
5204 | return NULL; | |
5205 | } | |
5206 | } | |
5207 | ||
5208 | const gdb_byte * | |
5209 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5210 | (const mapped_debug_names &map, uint32_t namei) | |
5211 | { | |
5212 | if (namei >= map.name_count) | |
5213 | { | |
b98664d3 | 5214 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5215 | "[in module %s]"), |
5216 | namei, map.name_count, | |
ed2dc618 | 5217 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5218 | return NULL; |
5219 | } | |
5220 | ||
5221 | const ULONGEST namei_entry_offs | |
5222 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5223 | + namei * map.offset_size), | |
5224 | map.offset_size, map.dwarf5_byte_order); | |
5225 | return map.entry_pool + namei_entry_offs; | |
5226 | } | |
5227 | ||
5228 | /* See dw2_debug_names_iterator. */ | |
5229 | ||
5230 | dwarf2_per_cu_data * | |
5231 | dw2_debug_names_iterator::next () | |
5232 | { | |
5233 | if (m_addr == NULL) | |
5234 | return NULL; | |
5235 | ||
ed2dc618 SM |
5236 | struct dwarf2_per_objfile *dwarf2_per_objfile = m_map.dwarf2_per_objfile; |
5237 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5238 | bfd *const abfd = objfile->obfd; | |
927aa2e7 JK |
5239 | |
5240 | again: | |
5241 | ||
5242 | unsigned int bytes_read; | |
5243 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5244 | m_addr += bytes_read; | |
5245 | if (abbrev == 0) | |
5246 | return NULL; | |
5247 | ||
5248 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5249 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5250 | { | |
b98664d3 | 5251 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5252 | "[in module %s]"), |
ed2dc618 | 5253 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5254 | return NULL; |
5255 | } | |
5256 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5257 | enum class symbol_linkage { |
5258 | unknown, | |
5259 | static_, | |
5260 | extern_, | |
23c13d42 | 5261 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5262 | dwarf2_per_cu_data *per_cu = NULL; |
5263 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5264 | { | |
5265 | ULONGEST ull; | |
5266 | switch (attr.form) | |
5267 | { | |
5268 | case DW_FORM_implicit_const: | |
5269 | ull = attr.implicit_const; | |
5270 | break; | |
5271 | case DW_FORM_flag_present: | |
5272 | ull = 1; | |
5273 | break; | |
5274 | case DW_FORM_udata: | |
5275 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5276 | m_addr += bytes_read; | |
5277 | break; | |
5278 | default: | |
b98664d3 | 5279 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5280 | dwarf_form_name (attr.form), |
ed2dc618 | 5281 | objfile_name (objfile)); |
927aa2e7 JK |
5282 | return NULL; |
5283 | } | |
5284 | switch (attr.dw_idx) | |
5285 | { | |
5286 | case DW_IDX_compile_unit: | |
5287 | /* Don't crash on bad data. */ | |
b76e467d | 5288 | if (ull >= dwarf2_per_objfile->all_comp_units.size ()) |
927aa2e7 | 5289 | { |
b98664d3 | 5290 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5291 | " [in module %s]"), |
5292 | pulongest (ull), | |
5293 | objfile_name (dwarf2_per_objfile->objfile)); | |
5294 | continue; | |
5295 | } | |
ff4c9fec | 5296 | per_cu = dwarf2_per_objfile->get_cutu (ull); |
927aa2e7 | 5297 | break; |
8af5c486 JK |
5298 | case DW_IDX_type_unit: |
5299 | /* Don't crash on bad data. */ | |
b2bdb8cf | 5300 | if (ull >= dwarf2_per_objfile->all_type_units.size ()) |
8af5c486 | 5301 | { |
b98664d3 | 5302 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5303 | " [in module %s]"), |
5304 | pulongest (ull), | |
5305 | objfile_name (dwarf2_per_objfile->objfile)); | |
5306 | continue; | |
5307 | } | |
ff4c9fec | 5308 | per_cu = &dwarf2_per_objfile->get_tu (ull)->per_cu; |
8af5c486 | 5309 | break; |
927aa2e7 JK |
5310 | case DW_IDX_GNU_internal: |
5311 | if (!m_map.augmentation_is_gdb) | |
5312 | break; | |
23c13d42 | 5313 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5314 | break; |
5315 | case DW_IDX_GNU_external: | |
5316 | if (!m_map.augmentation_is_gdb) | |
5317 | break; | |
23c13d42 | 5318 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5319 | break; |
5320 | } | |
5321 | } | |
5322 | ||
5323 | /* Skip if already read in. */ | |
5324 | if (per_cu->v.quick->compunit_symtab) | |
5325 | goto again; | |
5326 | ||
5327 | /* Check static vs global. */ | |
23c13d42 | 5328 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5329 | { |
2b79f376 | 5330 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5331 | const bool symbol_is_static = |
5332 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5333 | if (want_static != symbol_is_static) |
2b79f376 | 5334 | goto again; |
927aa2e7 JK |
5335 | } |
5336 | ||
5337 | /* Match dw2_symtab_iter_next, symbol_kind | |
5338 | and debug_names::psymbol_tag. */ | |
5339 | switch (m_domain) | |
5340 | { | |
5341 | case VAR_DOMAIN: | |
5342 | switch (indexval.dwarf_tag) | |
5343 | { | |
5344 | case DW_TAG_variable: | |
5345 | case DW_TAG_subprogram: | |
5346 | /* Some types are also in VAR_DOMAIN. */ | |
5347 | case DW_TAG_typedef: | |
5348 | case DW_TAG_structure_type: | |
5349 | break; | |
5350 | default: | |
5351 | goto again; | |
5352 | } | |
5353 | break; | |
5354 | case STRUCT_DOMAIN: | |
5355 | switch (indexval.dwarf_tag) | |
5356 | { | |
5357 | case DW_TAG_typedef: | |
5358 | case DW_TAG_structure_type: | |
5359 | break; | |
5360 | default: | |
5361 | goto again; | |
5362 | } | |
5363 | break; | |
5364 | case LABEL_DOMAIN: | |
5365 | switch (indexval.dwarf_tag) | |
5366 | { | |
5367 | case 0: | |
5368 | case DW_TAG_variable: | |
5369 | break; | |
5370 | default: | |
5371 | goto again; | |
5372 | } | |
5373 | break; | |
59c35742 AB |
5374 | case MODULE_DOMAIN: |
5375 | switch (indexval.dwarf_tag) | |
5376 | { | |
5377 | case DW_TAG_module: | |
5378 | break; | |
5379 | default: | |
5380 | goto again; | |
5381 | } | |
5382 | break; | |
927aa2e7 JK |
5383 | default: |
5384 | break; | |
5385 | } | |
5386 | ||
5387 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5388 | debug_names::psymbol_tag. */ | |
5389 | switch (m_search) | |
4b514bc8 | 5390 | { |
927aa2e7 JK |
5391 | case VARIABLES_DOMAIN: |
5392 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5393 | { |
927aa2e7 JK |
5394 | case DW_TAG_variable: |
5395 | break; | |
5396 | default: | |
5397 | goto again; | |
4b514bc8 | 5398 | } |
927aa2e7 JK |
5399 | break; |
5400 | case FUNCTIONS_DOMAIN: | |
5401 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5402 | { |
927aa2e7 JK |
5403 | case DW_TAG_subprogram: |
5404 | break; | |
5405 | default: | |
5406 | goto again; | |
4b514bc8 | 5407 | } |
927aa2e7 JK |
5408 | break; |
5409 | case TYPES_DOMAIN: | |
5410 | switch (indexval.dwarf_tag) | |
5411 | { | |
5412 | case DW_TAG_typedef: | |
5413 | case DW_TAG_structure_type: | |
5414 | break; | |
5415 | default: | |
5416 | goto again; | |
5417 | } | |
5418 | break; | |
59c35742 AB |
5419 | case MODULES_DOMAIN: |
5420 | switch (indexval.dwarf_tag) | |
5421 | { | |
5422 | case DW_TAG_module: | |
5423 | break; | |
5424 | default: | |
5425 | goto again; | |
5426 | } | |
927aa2e7 JK |
5427 | default: |
5428 | break; | |
4b514bc8 | 5429 | } |
927aa2e7 JK |
5430 | |
5431 | return per_cu; | |
4b514bc8 | 5432 | } |
61920122 | 5433 | |
927aa2e7 | 5434 | static struct compunit_symtab * |
c7f839cb | 5435 | dw2_debug_names_lookup_symbol (struct objfile *objfile, block_enum block_index, |
927aa2e7 | 5436 | const char *name, domain_enum domain) |
4b514bc8 | 5437 | { |
ed2dc618 SM |
5438 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5439 | = get_dwarf2_per_objfile (objfile); | |
61920122 | 5440 | |
927aa2e7 JK |
5441 | const auto &mapp = dwarf2_per_objfile->debug_names_table; |
5442 | if (!mapp) | |
61920122 | 5443 | { |
927aa2e7 JK |
5444 | /* index is NULL if OBJF_READNOW. */ |
5445 | return NULL; | |
5446 | } | |
5447 | const auto &map = *mapp; | |
9291a0cd | 5448 | |
2b79f376 | 5449 | dw2_debug_names_iterator iter (map, block_index, domain, name); |
9703b513 | 5450 | |
927aa2e7 JK |
5451 | struct compunit_symtab *stab_best = NULL; |
5452 | struct dwarf2_per_cu_data *per_cu; | |
5453 | while ((per_cu = iter.next ()) != NULL) | |
5454 | { | |
5455 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 5456 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
927aa2e7 | 5457 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 5458 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 5459 | |
927aa2e7 JK |
5460 | sym = block_find_symbol (block, name, domain, |
5461 | block_find_non_opaque_type_preferred, | |
5462 | &with_opaque); | |
9703b513 | 5463 | |
927aa2e7 JK |
5464 | /* Some caution must be observed with overloaded functions and |
5465 | methods, since the index will not contain any overload | |
5466 | information (but NAME might contain it). */ | |
a3ec0bb1 | 5467 | |
927aa2e7 | 5468 | if (sym != NULL |
987012b8 | 5469 | && strcmp_iw (sym->search_name (), name) == 0) |
927aa2e7 JK |
5470 | return stab; |
5471 | if (with_opaque != NULL | |
987012b8 | 5472 | && strcmp_iw (with_opaque->search_name (), name) == 0) |
927aa2e7 | 5473 | stab_best = stab; |
9703b513 | 5474 | |
927aa2e7 | 5475 | /* Keep looking through other CUs. */ |
9703b513 TT |
5476 | } |
5477 | ||
927aa2e7 | 5478 | return stab_best; |
9703b513 TT |
5479 | } |
5480 | ||
927aa2e7 JK |
5481 | /* This dumps minimal information about .debug_names. It is called |
5482 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5483 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5484 | |
927aa2e7 JK |
5485 | static void |
5486 | dw2_debug_names_dump (struct objfile *objfile) | |
5487 | { | |
ed2dc618 SM |
5488 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5489 | = get_dwarf2_per_objfile (objfile); | |
5490 | ||
927aa2e7 JK |
5491 | gdb_assert (dwarf2_per_objfile->using_index); |
5492 | printf_filtered (".debug_names:"); | |
5493 | if (dwarf2_per_objfile->debug_names_table) | |
5494 | printf_filtered (" exists\n"); | |
5495 | else | |
5496 | printf_filtered (" faked for \"readnow\"\n"); | |
5497 | printf_filtered ("\n"); | |
9291a0cd TT |
5498 | } |
5499 | ||
9291a0cd | 5500 | static void |
927aa2e7 JK |
5501 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
5502 | const char *func_name) | |
9291a0cd | 5503 | { |
ed2dc618 SM |
5504 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5505 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 5506 | |
927aa2e7 JK |
5507 | /* dwarf2_per_objfile->debug_names_table is NULL if OBJF_READNOW. */ |
5508 | if (dwarf2_per_objfile->debug_names_table) | |
24c79950 | 5509 | { |
927aa2e7 | 5510 | const mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
24c79950 | 5511 | |
2b79f376 | 5512 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name); |
24c79950 | 5513 | |
927aa2e7 JK |
5514 | struct dwarf2_per_cu_data *per_cu; |
5515 | while ((per_cu = iter.next ()) != NULL) | |
58f0c718 | 5516 | dw2_instantiate_symtab (per_cu, false); |
927aa2e7 JK |
5517 | } |
5518 | } | |
24c79950 | 5519 | |
3b00ef10 TT |
5520 | static void |
5521 | dw2_debug_names_map_matching_symbols | |
5522 | (struct objfile *objfile, | |
5523 | const lookup_name_info &name, domain_enum domain, | |
5524 | int global, | |
5525 | gdb::function_view<symbol_found_callback_ftype> callback, | |
5526 | symbol_compare_ftype *ordered_compare) | |
5527 | { | |
5528 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
5529 | = get_dwarf2_per_objfile (objfile); | |
5530 | ||
5531 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
5532 | if (!dwarf2_per_objfile->debug_names_table) | |
5533 | return; | |
5534 | ||
5535 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; | |
5536 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; | |
5537 | ||
5538 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5539 | auto matcher = [&] (const char *symname) | |
5540 | { | |
5541 | if (ordered_compare == nullptr) | |
5542 | return true; | |
5543 | return ordered_compare (symname, match_name) == 0; | |
5544 | }; | |
5545 | ||
5546 | dw2_expand_symtabs_matching_symbol (map, name, matcher, ALL_DOMAIN, | |
5547 | [&] (offset_type namei) | |
5548 | { | |
5549 | /* The name was matched, now expand corresponding CUs that were | |
5550 | marked. */ | |
5551 | dw2_debug_names_iterator iter (map, block_kind, domain, namei); | |
5552 | ||
5553 | struct dwarf2_per_cu_data *per_cu; | |
5554 | while ((per_cu = iter.next ()) != NULL) | |
5555 | dw2_expand_symtabs_matching_one (per_cu, nullptr, nullptr); | |
5556 | return true; | |
5557 | }); | |
5558 | ||
5559 | /* It's a shame we couldn't do this inside the | |
5560 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
5561 | that have already been expanded. Instead, this loop matches what | |
5562 | the psymtab code does. */ | |
5563 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) | |
5564 | { | |
5565 | struct compunit_symtab *cust = per_cu->v.quick->compunit_symtab; | |
5566 | if (cust != nullptr) | |
5567 | { | |
5568 | const struct block *block | |
5569 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
5570 | if (!iterate_over_symbols_terminated (block, name, | |
5571 | domain, callback)) | |
5572 | break; | |
5573 | } | |
5574 | } | |
5575 | } | |
5576 | ||
927aa2e7 JK |
5577 | static void |
5578 | dw2_debug_names_expand_symtabs_matching | |
5579 | (struct objfile *objfile, | |
5580 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5581 | const lookup_name_info &lookup_name, | |
5582 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
5583 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5584 | enum search_domain kind) | |
5585 | { | |
ed2dc618 SM |
5586 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5587 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 5588 | |
927aa2e7 JK |
5589 | /* debug_names_table is NULL if OBJF_READNOW. */ |
5590 | if (!dwarf2_per_objfile->debug_names_table) | |
5591 | return; | |
9291a0cd | 5592 | |
ed2dc618 | 5593 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
24c79950 | 5594 | |
44ed8f3e | 5595 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
bbf2f4df | 5596 | |
44ed8f3e PA |
5597 | dw2_expand_symtabs_matching_symbol (map, lookup_name, |
5598 | symbol_matcher, | |
5599 | kind, [&] (offset_type namei) | |
927aa2e7 | 5600 | { |
927aa2e7 JK |
5601 | /* The name was matched, now expand corresponding CUs that were |
5602 | marked. */ | |
5603 | dw2_debug_names_iterator iter (map, kind, namei); | |
bbf2f4df | 5604 | |
927aa2e7 JK |
5605 | struct dwarf2_per_cu_data *per_cu; |
5606 | while ((per_cu = iter.next ()) != NULL) | |
5607 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, | |
5608 | expansion_notify); | |
3b00ef10 | 5609 | return true; |
44ed8f3e | 5610 | }); |
9291a0cd TT |
5611 | } |
5612 | ||
927aa2e7 | 5613 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
5614 | { |
5615 | dw2_has_symbols, | |
5616 | dw2_find_last_source_symtab, | |
5617 | dw2_forget_cached_source_info, | |
f8eba3c6 | 5618 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 5619 | dw2_debug_names_lookup_symbol, |
d3214198 | 5620 | NULL, |
9291a0cd | 5621 | dw2_print_stats, |
927aa2e7 | 5622 | dw2_debug_names_dump, |
927aa2e7 | 5623 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 5624 | dw2_expand_all_symtabs, |
652a8996 | 5625 | dw2_expand_symtabs_with_fullname, |
3b00ef10 | 5626 | dw2_debug_names_map_matching_symbols, |
927aa2e7 | 5627 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 5628 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 5629 | NULL, |
9291a0cd TT |
5630 | dw2_map_symbol_filenames |
5631 | }; | |
5632 | ||
4485a1c1 SM |
5633 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5634 | to either a dwarf2_per_objfile or dwz_file object. */ | |
5635 | ||
5636 | template <typename T> | |
5637 | static gdb::array_view<const gdb_byte> | |
5638 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
5639 | { | |
5640 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
5641 | ||
96b79293 | 5642 | if (section->empty ()) |
4485a1c1 SM |
5643 | return {}; |
5644 | ||
5645 | /* Older elfutils strip versions could keep the section in the main | |
5646 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5647 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
5648 | return {}; |
5649 | ||
96b79293 | 5650 | section->read (obj); |
4485a1c1 | 5651 | |
8bebfcda PA |
5652 | /* dwarf2_section_info::size is a bfd_size_type, while |
5653 | gdb::array_view works with size_t. On 32-bit hosts, with | |
5654 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
5655 | is 32-bit. So we need an explicit narrowing conversion here. | |
5656 | This is fine, because it's impossible to allocate or mmap an | |
5657 | array/buffer larger than what size_t can represent. */ | |
5658 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
5659 | } |
5660 | ||
87d6a7aa SM |
5661 | /* Lookup the index cache for the contents of the index associated to |
5662 | DWARF2_OBJ. */ | |
5663 | ||
5664 | static gdb::array_view<const gdb_byte> | |
5665 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_objfile *dwarf2_obj) | |
5666 | { | |
5667 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
5668 | if (build_id == nullptr) | |
5669 | return {}; | |
5670 | ||
5671 | return global_index_cache.lookup_gdb_index (build_id, | |
5672 | &dwarf2_obj->index_cache_res); | |
5673 | } | |
5674 | ||
5675 | /* Same as the above, but for DWZ. */ | |
5676 | ||
5677 | static gdb::array_view<const gdb_byte> | |
5678 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
5679 | { | |
5680 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
5681 | if (build_id == nullptr) | |
5682 | return {}; | |
5683 | ||
5684 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
5685 | } | |
5686 | ||
3c0aa29a | 5687 | /* See symfile.h. */ |
9291a0cd | 5688 | |
3c0aa29a PA |
5689 | bool |
5690 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 5691 | { |
ed2dc618 SM |
5692 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5693 | = get_dwarf2_per_objfile (objfile); | |
5694 | ||
9291a0cd TT |
5695 | /* If we're about to read full symbols, don't bother with the |
5696 | indices. In this case we also don't care if some other debug | |
5697 | format is making psymtabs, because they are all about to be | |
5698 | expanded anyway. */ | |
5699 | if ((objfile->flags & OBJF_READNOW)) | |
5700 | { | |
9291a0cd | 5701 | dwarf2_per_objfile->using_index = 1; |
ed2dc618 SM |
5702 | create_all_comp_units (dwarf2_per_objfile); |
5703 | create_all_type_units (dwarf2_per_objfile); | |
b76e467d SM |
5704 | dwarf2_per_objfile->quick_file_names_table |
5705 | = create_quick_file_names_table | |
5706 | (dwarf2_per_objfile->all_comp_units.size ()); | |
9291a0cd | 5707 | |
b76e467d | 5708 | for (int i = 0; i < (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 5709 | + dwarf2_per_objfile->all_type_units.size ()); ++i) |
9291a0cd | 5710 | { |
ff4c9fec | 5711 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 5712 | |
e254ef6a DE |
5713 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
5714 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
5715 | } |
5716 | ||
5717 | /* Return 1 so that gdb sees the "quick" functions. However, | |
5718 | these functions will be no-ops because we will have expanded | |
5719 | all symtabs. */ | |
3c0aa29a PA |
5720 | *index_kind = dw_index_kind::GDB_INDEX; |
5721 | return true; | |
9291a0cd TT |
5722 | } |
5723 | ||
ed2dc618 | 5724 | if (dwarf2_read_debug_names (dwarf2_per_objfile)) |
3c0aa29a PA |
5725 | { |
5726 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
5727 | return true; | |
5728 | } | |
927aa2e7 | 5729 | |
4485a1c1 SM |
5730 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, |
5731 | get_gdb_index_contents_from_section<struct dwarf2_per_objfile>, | |
5732 | get_gdb_index_contents_from_section<dwz_file>)) | |
3c0aa29a PA |
5733 | { |
5734 | *index_kind = dw_index_kind::GDB_INDEX; | |
5735 | return true; | |
5736 | } | |
9291a0cd | 5737 | |
87d6a7aa SM |
5738 | /* ... otherwise, try to find the index in the index cache. */ |
5739 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, | |
5740 | get_gdb_index_contents_from_cache, | |
5741 | get_gdb_index_contents_from_cache_dwz)) | |
5742 | { | |
5743 | global_index_cache.hit (); | |
5744 | *index_kind = dw_index_kind::GDB_INDEX; | |
5745 | return true; | |
5746 | } | |
5747 | ||
5748 | global_index_cache.miss (); | |
3c0aa29a | 5749 | return false; |
9291a0cd TT |
5750 | } |
5751 | ||
5752 | \f | |
5753 | ||
dce234bc PP |
5754 | /* Build a partial symbol table. */ |
5755 | ||
5756 | void | |
f29dff0a | 5757 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 5758 | { |
ed2dc618 SM |
5759 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5760 | = get_dwarf2_per_objfile (objfile); | |
c9bf0622 | 5761 | |
6eee24ce | 5762 | init_psymbol_list (objfile, 1024); |
c906108c | 5763 | |
a70b8144 | 5764 | try |
c9bf0622 TT |
5765 | { |
5766 | /* This isn't really ideal: all the data we allocate on the | |
5767 | objfile's obstack is still uselessly kept around. However, | |
5768 | freeing it seems unsafe. */ | |
906768f9 | 5769 | psymtab_discarder psymtabs (objfile); |
ed2dc618 | 5770 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile); |
906768f9 | 5771 | psymtabs.keep (); |
87d6a7aa SM |
5772 | |
5773 | /* (maybe) store an index in the cache. */ | |
5774 | global_index_cache.store (dwarf2_per_objfile); | |
c9bf0622 | 5775 | } |
230d2906 | 5776 | catch (const gdb_exception_error &except) |
492d29ea PA |
5777 | { |
5778 | exception_print (gdb_stderr, except); | |
5779 | } | |
c906108c | 5780 | } |
c906108c | 5781 | |
3b80fe9b DE |
5782 | /* Find the base address of the compilation unit for range lists and |
5783 | location lists. It will normally be specified by DW_AT_low_pc. | |
5784 | In DWARF-3 draft 4, the base address could be overridden by | |
5785 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
5786 | compilation units with discontinuous ranges. */ | |
5787 | ||
5788 | static void | |
5789 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
5790 | { | |
5791 | struct attribute *attr; | |
5792 | ||
2b24b6e4 | 5793 | cu->base_address.reset (); |
3b80fe9b DE |
5794 | |
5795 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 5796 | if (attr != nullptr) |
2b24b6e4 | 5797 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
5798 | else |
5799 | { | |
5800 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 5801 | if (attr != nullptr) |
2b24b6e4 | 5802 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
5803 | } |
5804 | } | |
5805 | ||
36586728 TT |
5806 | /* Helper function that returns the proper abbrev section for |
5807 | THIS_CU. */ | |
5808 | ||
5809 | static struct dwarf2_section_info * | |
5810 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
5811 | { | |
5812 | struct dwarf2_section_info *abbrev; | |
ed2dc618 | 5813 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
36586728 TT |
5814 | |
5815 | if (this_cu->is_dwz) | |
ed2dc618 | 5816 | abbrev = &dwarf2_get_dwz_file (dwarf2_per_objfile)->abbrev; |
36586728 TT |
5817 | else |
5818 | abbrev = &dwarf2_per_objfile->abbrev; | |
5819 | ||
5820 | return abbrev; | |
5821 | } | |
5822 | ||
f4dc4d17 DE |
5823 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
5824 | ||
5825 | static sect_offset | |
ed2dc618 SM |
5826 | read_abbrev_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
5827 | struct dwarf2_section_info *section, | |
9c541725 | 5828 | sect_offset sect_off) |
f4dc4d17 | 5829 | { |
96b79293 | 5830 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 5831 | const gdb_byte *info_ptr; |
ac298888 | 5832 | unsigned int initial_length_size, offset_size; |
43988095 | 5833 | uint16_t version; |
f4dc4d17 | 5834 | |
96b79293 | 5835 | section->read (dwarf2_per_objfile->objfile); |
9c541725 | 5836 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 5837 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 5838 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
5839 | info_ptr += initial_length_size; |
5840 | ||
5841 | version = read_2_bytes (abfd, info_ptr); | |
5842 | info_ptr += 2; | |
5843 | if (version >= 5) | |
5844 | { | |
5845 | /* Skip unit type and address size. */ | |
5846 | info_ptr += 2; | |
5847 | } | |
5848 | ||
24aa364d | 5849 | return (sect_offset) read_offset (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
5850 | } |
5851 | ||
b83470bf TT |
5852 | /* A partial symtab that is used only for include files. */ |
5853 | struct dwarf2_include_psymtab : public partial_symtab | |
5854 | { | |
5855 | dwarf2_include_psymtab (const char *filename, struct objfile *objfile) | |
5856 | : partial_symtab (filename, objfile) | |
5857 | { | |
5858 | } | |
5859 | ||
5860 | void read_symtab (struct objfile *objfile) override | |
5861 | { | |
5862 | expand_psymtab (objfile); | |
5863 | } | |
5864 | ||
5865 | void expand_psymtab (struct objfile *objfile) override | |
5866 | { | |
5867 | if (m_readin) | |
5868 | return; | |
5869 | /* It's an include file, no symbols to read for it. | |
5870 | Everything is in the parent symtab. */ | |
48993951 | 5871 | expand_dependencies (objfile); |
b83470bf TT |
5872 | m_readin = true; |
5873 | } | |
5874 | ||
5875 | bool readin_p () const override | |
5876 | { | |
5877 | return m_readin; | |
5878 | } | |
5879 | ||
5880 | struct compunit_symtab *get_compunit_symtab () const override | |
5881 | { | |
5882 | return nullptr; | |
5883 | } | |
5884 | ||
5885 | private: | |
5886 | ||
5887 | bool m_readin = false; | |
5888 | }; | |
5889 | ||
aaa75496 JB |
5890 | /* Allocate a new partial symtab for file named NAME and mark this new |
5891 | partial symtab as being an include of PST. */ | |
5892 | ||
5893 | static void | |
891813be | 5894 | dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst, |
aaa75496 JB |
5895 | struct objfile *objfile) |
5896 | { | |
b83470bf | 5897 | dwarf2_include_psymtab *subpst = new dwarf2_include_psymtab (name, objfile); |
aaa75496 | 5898 | |
fbd9ab74 JK |
5899 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
5900 | { | |
5901 | /* It shares objfile->objfile_obstack. */ | |
5902 | subpst->dirname = pst->dirname; | |
5903 | } | |
5904 | ||
a9342b62 | 5905 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
5906 | subpst->dependencies[0] = pst; |
5907 | subpst->number_of_dependencies = 1; | |
aaa75496 JB |
5908 | } |
5909 | ||
5910 | /* Read the Line Number Program data and extract the list of files | |
5911 | included by the source file represented by PST. Build an include | |
d85a05f0 | 5912 | partial symtab for each of these included files. */ |
aaa75496 JB |
5913 | |
5914 | static void | |
5915 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 5916 | struct die_info *die, |
891813be | 5917 | dwarf2_psymtab *pst) |
aaa75496 | 5918 | { |
fff8551c | 5919 | line_header_up lh; |
d85a05f0 | 5920 | struct attribute *attr; |
aaa75496 | 5921 | |
d85a05f0 | 5922 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
435d3d88 | 5923 | if (attr != nullptr) |
9c541725 | 5924 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
5925 | if (lh == NULL) |
5926 | return; /* No linetable, so no includes. */ | |
5927 | ||
79748972 TT |
5928 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
5929 | that we pass in the raw text_low here; that is ok because we're | |
5930 | only decoding the line table to make include partial symtabs, and | |
5931 | so the addresses aren't really used. */ | |
4ae976d1 | 5932 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 5933 | pst->raw_text_low (), 1); |
aaa75496 JB |
5934 | } |
5935 | ||
348e048f | 5936 | static hashval_t |
52dc124a | 5937 | hash_signatured_type (const void *item) |
348e048f | 5938 | { |
9a3c8263 SM |
5939 | const struct signatured_type *sig_type |
5940 | = (const struct signatured_type *) item; | |
9a619af0 | 5941 | |
348e048f | 5942 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 5943 | return sig_type->signature; |
348e048f DE |
5944 | } |
5945 | ||
5946 | static int | |
52dc124a | 5947 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 5948 | { |
9a3c8263 SM |
5949 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
5950 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 5951 | |
348e048f DE |
5952 | return lhs->signature == rhs->signature; |
5953 | } | |
5954 | ||
1fd400ff TT |
5955 | /* Allocate a hash table for signatured types. */ |
5956 | ||
b0b6a987 | 5957 | static htab_up |
298e9637 | 5958 | allocate_signatured_type_table () |
1fd400ff | 5959 | { |
b0b6a987 TT |
5960 | return htab_up (htab_create_alloc (41, |
5961 | hash_signatured_type, | |
5962 | eq_signatured_type, | |
5963 | NULL, xcalloc, xfree)); | |
1fd400ff TT |
5964 | } |
5965 | ||
d467dd73 | 5966 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
5967 | |
5968 | static int | |
d467dd73 | 5969 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 5970 | { |
9a3c8263 | 5971 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
5972 | std::vector<signatured_type *> *all_type_units |
5973 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 5974 | |
b2bdb8cf | 5975 | all_type_units->push_back (sigt); |
1fd400ff TT |
5976 | |
5977 | return 1; | |
5978 | } | |
5979 | ||
78d4d2c5 | 5980 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
5981 | and fill them into TYPES_HTAB. It will process only type units, |
5982 | therefore DW_UT_type. */ | |
c88ee1f0 | 5983 | |
78d4d2c5 | 5984 | static void |
ed2dc618 SM |
5985 | create_debug_type_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
5986 | struct dwo_file *dwo_file, | |
b0b6a987 | 5987 | dwarf2_section_info *section, htab_up &types_htab, |
43988095 | 5988 | rcuh_kind section_kind) |
348e048f | 5989 | { |
3019eac3 | 5990 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 5991 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
5992 | bfd *abfd; |
5993 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 5994 | |
4bdcc0c1 DE |
5995 | abbrev_section = (dwo_file != NULL |
5996 | ? &dwo_file->sections.abbrev | |
5997 | : &dwarf2_per_objfile->abbrev); | |
5998 | ||
b4f54984 | 5999 | if (dwarf_read_debug) |
43988095 | 6000 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
96b79293 TT |
6001 | section->get_name (), |
6002 | abbrev_section->get_file_name ()); | |
09406207 | 6003 | |
96b79293 | 6004 | section->read (objfile); |
78d4d2c5 | 6005 | info_ptr = section->buffer; |
348e048f | 6006 | |
78d4d2c5 JK |
6007 | if (info_ptr == NULL) |
6008 | return; | |
348e048f | 6009 | |
78d4d2c5 JK |
6010 | /* We can't set abfd until now because the section may be empty or |
6011 | not present, in which case the bfd is unknown. */ | |
96b79293 | 6012 | abfd = section->get_bfd_owner (); |
348e048f | 6013 | |
c0ab21c2 TT |
6014 | /* We don't use cutu_reader here because we don't need to read |
6015 | any dies: the signature is in the header. */ | |
3019eac3 | 6016 | |
78d4d2c5 JK |
6017 | end_ptr = info_ptr + section->size; |
6018 | while (info_ptr < end_ptr) | |
6019 | { | |
78d4d2c5 JK |
6020 | struct signatured_type *sig_type; |
6021 | struct dwo_unit *dwo_tu; | |
6022 | void **slot; | |
6023 | const gdb_byte *ptr = info_ptr; | |
6024 | struct comp_unit_head header; | |
6025 | unsigned int length; | |
8b70b953 | 6026 | |
9c541725 | 6027 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6028 | |
a49dd8dd JK |
6029 | /* Initialize it due to a false compiler warning. */ |
6030 | header.signature = -1; | |
9c541725 | 6031 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6032 | |
78d4d2c5 JK |
6033 | /* We need to read the type's signature in order to build the hash |
6034 | table, but we don't need anything else just yet. */ | |
348e048f | 6035 | |
ed2dc618 | 6036 | ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, &header, section, |
43988095 | 6037 | abbrev_section, ptr, section_kind); |
348e048f | 6038 | |
4057dfde | 6039 | length = header.get_length (); |
6caca83c | 6040 | |
78d4d2c5 JK |
6041 | /* Skip dummy type units. */ |
6042 | if (ptr >= info_ptr + length | |
43988095 JK |
6043 | || peek_abbrev_code (abfd, ptr) == 0 |
6044 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
6045 | { |
6046 | info_ptr += length; | |
6047 | continue; | |
6048 | } | |
dee91e82 | 6049 | |
78d4d2c5 JK |
6050 | if (types_htab == NULL) |
6051 | { | |
6052 | if (dwo_file) | |
298e9637 | 6053 | types_htab = allocate_dwo_unit_table (); |
78d4d2c5 | 6054 | else |
298e9637 | 6055 | types_htab = allocate_signatured_type_table (); |
78d4d2c5 | 6056 | } |
8b70b953 | 6057 | |
78d4d2c5 JK |
6058 | if (dwo_file) |
6059 | { | |
6060 | sig_type = NULL; | |
6061 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6062 | struct dwo_unit); | |
6063 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 6064 | dwo_tu->signature = header.signature; |
9c541725 | 6065 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6066 | dwo_tu->section = section; |
9c541725 | 6067 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6068 | dwo_tu->length = length; |
6069 | } | |
6070 | else | |
6071 | { | |
6072 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6073 | The real type_offset is in the DWO file. */ | |
6074 | dwo_tu = NULL; | |
6075 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6076 | struct signatured_type); | |
43988095 | 6077 | sig_type->signature = header.signature; |
9c541725 | 6078 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
e3b94546 | 6079 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
78d4d2c5 JK |
6080 | sig_type->per_cu.is_debug_types = 1; |
6081 | sig_type->per_cu.section = section; | |
9c541725 | 6082 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6083 | sig_type->per_cu.length = length; |
6084 | } | |
6085 | ||
b0b6a987 | 6086 | slot = htab_find_slot (types_htab.get (), |
78d4d2c5 JK |
6087 | dwo_file ? (void*) dwo_tu : (void *) sig_type, |
6088 | INSERT); | |
6089 | gdb_assert (slot != NULL); | |
6090 | if (*slot != NULL) | |
6091 | { | |
9c541725 | 6092 | sect_offset dup_sect_off; |
0349ea22 | 6093 | |
3019eac3 DE |
6094 | if (dwo_file) |
6095 | { | |
78d4d2c5 JK |
6096 | const struct dwo_unit *dup_tu |
6097 | = (const struct dwo_unit *) *slot; | |
6098 | ||
9c541725 | 6099 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6100 | } |
6101 | else | |
6102 | { | |
78d4d2c5 JK |
6103 | const struct signatured_type *dup_tu |
6104 | = (const struct signatured_type *) *slot; | |
6105 | ||
9c541725 | 6106 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6107 | } |
8b70b953 | 6108 | |
b98664d3 | 6109 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6110 | " the entry at offset %s, signature %s"), |
6111 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6112 | hex_string (header.signature)); |
78d4d2c5 JK |
6113 | } |
6114 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6115 | |
78d4d2c5 | 6116 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6117 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6118 | sect_offset_str (sect_off), | |
43988095 | 6119 | hex_string (header.signature)); |
3019eac3 | 6120 | |
78d4d2c5 JK |
6121 | info_ptr += length; |
6122 | } | |
6123 | } | |
3019eac3 | 6124 | |
78d4d2c5 JK |
6125 | /* Create the hash table of all entries in the .debug_types |
6126 | (or .debug_types.dwo) section(s). | |
6127 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6128 | otherwise it is NULL. | |
b3c8eb43 | 6129 | |
78d4d2c5 | 6130 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6131 | |
78d4d2c5 | 6132 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6133 | |
78d4d2c5 | 6134 | static void |
ed2dc618 SM |
6135 | create_debug_types_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6136 | struct dwo_file *dwo_file, | |
fd5866f6 | 6137 | gdb::array_view<dwarf2_section_info> type_sections, |
b0b6a987 | 6138 | htab_up &types_htab) |
78d4d2c5 | 6139 | { |
fd5866f6 SM |
6140 | for (dwarf2_section_info §ion : type_sections) |
6141 | create_debug_type_hash_table (dwarf2_per_objfile, dwo_file, §ion, | |
ed2dc618 | 6142 | types_htab, rcuh_kind::TYPE); |
3019eac3 DE |
6143 | } |
6144 | ||
6145 | /* Create the hash table of all entries in the .debug_types section, | |
6146 | and initialize all_type_units. | |
6147 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6148 | otherwise non-zero. */ | |
6149 | ||
6150 | static int | |
ed2dc618 | 6151 | create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
3019eac3 | 6152 | { |
b0b6a987 | 6153 | htab_up types_htab; |
3019eac3 | 6154 | |
ed2dc618 SM |
6155 | create_debug_type_hash_table (dwarf2_per_objfile, NULL, |
6156 | &dwarf2_per_objfile->info, types_htab, | |
43988095 | 6157 | rcuh_kind::COMPILE); |
ed2dc618 SM |
6158 | create_debug_types_hash_table (dwarf2_per_objfile, NULL, |
6159 | dwarf2_per_objfile->types, types_htab); | |
3019eac3 DE |
6160 | if (types_htab == NULL) |
6161 | { | |
6162 | dwarf2_per_objfile->signatured_types = NULL; | |
6163 | return 0; | |
6164 | } | |
6165 | ||
b0b6a987 | 6166 | dwarf2_per_objfile->signatured_types = std::move (types_htab); |
348e048f | 6167 | |
b2bdb8cf | 6168 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
b0b6a987 TT |
6169 | dwarf2_per_objfile->all_type_units.reserve |
6170 | (htab_elements (dwarf2_per_objfile->signatured_types.get ())); | |
b2bdb8cf | 6171 | |
b0b6a987 TT |
6172 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types.get (), |
6173 | add_signatured_type_cu_to_table, | |
b2bdb8cf | 6174 | &dwarf2_per_objfile->all_type_units); |
1fd400ff | 6175 | |
348e048f DE |
6176 | return 1; |
6177 | } | |
6178 | ||
6aa5f3a6 DE |
6179 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
6180 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
6181 | Otherwise we find one. */ | |
6182 | ||
6183 | static struct signatured_type * | |
ed2dc618 SM |
6184 | add_type_unit (struct dwarf2_per_objfile *dwarf2_per_objfile, ULONGEST sig, |
6185 | void **slot) | |
6aa5f3a6 DE |
6186 | { |
6187 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6aa5f3a6 | 6188 | |
b2bdb8cf SM |
6189 | if (dwarf2_per_objfile->all_type_units.size () |
6190 | == dwarf2_per_objfile->all_type_units.capacity ()) | |
6191 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6192 | |
b2bdb8cf SM |
6193 | signatured_type *sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6194 | struct signatured_type); | |
6195 | ||
6196 | dwarf2_per_objfile->all_type_units.push_back (sig_type); | |
6aa5f3a6 DE |
6197 | sig_type->signature = sig; |
6198 | sig_type->per_cu.is_debug_types = 1; | |
6199 | if (dwarf2_per_objfile->using_index) | |
6200 | { | |
6201 | sig_type->per_cu.v.quick = | |
6202 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6203 | struct dwarf2_per_cu_quick_data); | |
6204 | } | |
6205 | ||
6206 | if (slot == NULL) | |
6207 | { | |
b0b6a987 | 6208 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types.get (), |
6aa5f3a6 DE |
6209 | sig_type, INSERT); |
6210 | } | |
6211 | gdb_assert (*slot == NULL); | |
6212 | *slot = sig_type; | |
6213 | /* The rest of sig_type must be filled in by the caller. */ | |
6214 | return sig_type; | |
6215 | } | |
6216 | ||
a2ce51a0 DE |
6217 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6218 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6219 | ||
6220 | static void | |
ed2dc618 | 6221 | fill_in_sig_entry_from_dwo_entry (struct dwarf2_per_objfile *dwarf2_per_objfile, |
a2ce51a0 DE |
6222 | struct signatured_type *sig_entry, |
6223 | struct dwo_unit *dwo_entry) | |
6224 | { | |
7ee85ab1 | 6225 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
6226 | gdb_assert (! sig_entry->per_cu.queued); |
6227 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
6228 | if (dwarf2_per_objfile->using_index) |
6229 | { | |
6230 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 6231 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
6232 | } |
6233 | else | |
6234 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6235 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6236 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6237 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6238 | gdb_assert (sig_entry->dwo_unit == NULL); |
6239 | ||
6240 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6241 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6242 | sig_entry->per_cu.length = dwo_entry->length; |
6243 | sig_entry->per_cu.reading_dwo_directly = 1; | |
e3b94546 | 6244 | sig_entry->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
a2ce51a0 DE |
6245 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6246 | sig_entry->dwo_unit = dwo_entry; | |
6247 | } | |
6248 | ||
6249 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6250 | If we haven't read the TU yet, create the signatured_type data structure |
6251 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6252 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6253 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6254 | containing that CU. Otherwise we could end up reading several other DWO | |
6255 | files (due to comdat folding) to process the transitive closure of all the | |
6256 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6257 | type signature that it needs. | |
a2ce51a0 DE |
6258 | We only do this for .gdb_index because in the psymtab case we already have |
6259 | to read all the DWOs to build the type unit groups. */ | |
6260 | ||
6261 | static struct signatured_type * | |
6262 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6263 | { | |
518817b3 SM |
6264 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6265 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 DE |
6266 | struct dwo_file *dwo_file; |
6267 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6268 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6269 | void **slot; |
a2ce51a0 DE |
6270 | |
6271 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
6272 | ||
6aa5f3a6 DE |
6273 | /* If TU skeletons have been removed then we may not have read in any |
6274 | TUs yet. */ | |
6275 | if (dwarf2_per_objfile->signatured_types == NULL) | |
298e9637 | 6276 | dwarf2_per_objfile->signatured_types = allocate_signatured_type_table (); |
a2ce51a0 DE |
6277 | |
6278 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6279 | Use the global signatured_types array to do our own comdat-folding |
6280 | of types. If this is the first time we're reading this TU, and | |
6281 | the TU has an entry in .gdb_index, replace the recorded data from | |
6282 | .gdb_index with this TU. */ | |
a2ce51a0 | 6283 | |
a2ce51a0 | 6284 | find_sig_entry.signature = sig; |
b0b6a987 | 6285 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types.get (), |
6aa5f3a6 | 6286 | &find_sig_entry, INSERT); |
9a3c8263 | 6287 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6288 | |
6289 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6290 | read. Don't reassign the global entry to point to this DWO if that's |
6291 | the case. Also note that if the TU is already being read, it may not | |
6292 | have come from a DWO, the program may be a mix of Fission-compiled | |
6293 | code and non-Fission-compiled code. */ | |
6294 | ||
6295 | /* Have we already tried to read this TU? | |
6296 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6297 | needn't exist in the global table yet). */ | |
6298 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6299 | return sig_entry; |
6300 | ||
6aa5f3a6 DE |
6301 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6302 | dwo_unit of the TU itself. */ | |
6303 | dwo_file = cu->dwo_unit->dwo_file; | |
6304 | ||
a2ce51a0 DE |
6305 | /* Ok, this is the first time we're reading this TU. */ |
6306 | if (dwo_file->tus == NULL) | |
6307 | return NULL; | |
6308 | find_dwo_entry.signature = sig; | |
b0b6a987 TT |
6309 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
6310 | &find_dwo_entry); | |
a2ce51a0 DE |
6311 | if (dwo_entry == NULL) |
6312 | return NULL; | |
6313 | ||
6aa5f3a6 DE |
6314 | /* If the global table doesn't have an entry for this TU, add one. */ |
6315 | if (sig_entry == NULL) | |
ed2dc618 | 6316 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6aa5f3a6 | 6317 | |
ed2dc618 | 6318 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6319 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6320 | return sig_entry; |
6321 | } | |
6322 | ||
a2ce51a0 DE |
6323 | /* Subroutine of lookup_signatured_type. |
6324 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6325 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6326 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6327 | |
6328 | static struct signatured_type * | |
6329 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6330 | { | |
518817b3 SM |
6331 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6332 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 6333 | struct dwp_file *dwp_file = get_dwp_file (dwarf2_per_objfile); |
a2ce51a0 DE |
6334 | struct dwo_unit *dwo_entry; |
6335 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6336 | void **slot; |
a2ce51a0 DE |
6337 | |
6338 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
6339 | gdb_assert (dwp_file != NULL); | |
6340 | ||
6aa5f3a6 DE |
6341 | /* If TU skeletons have been removed then we may not have read in any |
6342 | TUs yet. */ | |
6343 | if (dwarf2_per_objfile->signatured_types == NULL) | |
298e9637 | 6344 | dwarf2_per_objfile->signatured_types = allocate_signatured_type_table (); |
a2ce51a0 | 6345 | |
6aa5f3a6 | 6346 | find_sig_entry.signature = sig; |
b0b6a987 | 6347 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types.get (), |
6aa5f3a6 | 6348 | &find_sig_entry, INSERT); |
9a3c8263 | 6349 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6350 | |
6351 | /* Have we already tried to read this TU? | |
6352 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6353 | needn't exist in the global table yet). */ | |
6354 | if (sig_entry != NULL) | |
6355 | return sig_entry; | |
6356 | ||
a2ce51a0 DE |
6357 | if (dwp_file->tus == NULL) |
6358 | return NULL; | |
ed2dc618 | 6359 | dwo_entry = lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, NULL, |
57d63ce2 | 6360 | sig, 1 /* is_debug_types */); |
a2ce51a0 DE |
6361 | if (dwo_entry == NULL) |
6362 | return NULL; | |
6363 | ||
ed2dc618 SM |
6364 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6365 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6366 | |
a2ce51a0 DE |
6367 | return sig_entry; |
6368 | } | |
6369 | ||
380bca97 | 6370 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6371 | Returns NULL if signature SIG is not present in the table. |
6372 | It is up to the caller to complain about this. */ | |
348e048f DE |
6373 | |
6374 | static struct signatured_type * | |
a2ce51a0 | 6375 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6376 | { |
518817b3 SM |
6377 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6378 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 6379 | |
a2ce51a0 DE |
6380 | if (cu->dwo_unit |
6381 | && dwarf2_per_objfile->using_index) | |
6382 | { | |
6383 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6384 | These cases require special processing. */ | |
ed2dc618 | 6385 | if (get_dwp_file (dwarf2_per_objfile) == NULL) |
a2ce51a0 DE |
6386 | return lookup_dwo_signatured_type (cu, sig); |
6387 | else | |
6388 | return lookup_dwp_signatured_type (cu, sig); | |
6389 | } | |
6390 | else | |
6391 | { | |
6392 | struct signatured_type find_entry, *entry; | |
348e048f | 6393 | |
a2ce51a0 DE |
6394 | if (dwarf2_per_objfile->signatured_types == NULL) |
6395 | return NULL; | |
6396 | find_entry.signature = sig; | |
9a3c8263 | 6397 | entry = ((struct signatured_type *) |
b0b6a987 TT |
6398 | htab_find (dwarf2_per_objfile->signatured_types.get (), |
6399 | &find_entry)); | |
a2ce51a0 DE |
6400 | return entry; |
6401 | } | |
348e048f | 6402 | } |
18a8505e | 6403 | |
42e7ad6c | 6404 | /* Low level DIE reading support. */ |
348e048f | 6405 | |
d85a05f0 DJ |
6406 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6407 | ||
6408 | static void | |
6409 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6410 | struct dwarf2_cu *cu, |
3019eac3 | 6411 | struct dwarf2_section_info *section, |
685af9cd TT |
6412 | struct dwo_file *dwo_file, |
6413 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6414 | { |
fceca515 | 6415 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6416 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6417 | reader->cu = cu; |
3019eac3 | 6418 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6419 | reader->die_section = section; |
6420 | reader->buffer = section->buffer; | |
f664829e | 6421 | reader->buffer_end = section->buffer + section->size; |
685af9cd | 6422 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6423 | } |
6424 | ||
c0ab21c2 | 6425 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6426 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6427 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6428 | already. |
6429 | ||
6430 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6431 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6432 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6433 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6434 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6435 | STUB_COMP_DIR may be non-NULL. | |
3e225074 | 6436 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE |
b0c7bfa9 | 6437 | are filled in with the info of the DIE from the DWO file. |
685af9cd TT |
6438 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6439 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6440 | kept around for at least as long as *RESULT_READER. | |
6441 | ||
b0c7bfa9 DE |
6442 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6443 | ||
6444 | static int | |
6445 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
6446 | struct dwo_unit *dwo_unit, | |
b0c7bfa9 | 6447 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6448 | const char *stub_comp_dir, |
b0c7bfa9 | 6449 | struct die_reader_specs *result_reader, |
d521ce57 | 6450 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6451 | struct die_info **result_comp_unit_die, |
685af9cd | 6452 | abbrev_table_up *result_dwo_abbrev_table) |
b0c7bfa9 | 6453 | { |
ed2dc618 | 6454 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
b0c7bfa9 DE |
6455 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
6456 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 6457 | bfd *abfd; |
d521ce57 | 6458 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6459 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6460 | int i,num_extra_attrs; | |
6461 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6462 | struct die_info *comp_unit_die; |
6463 | ||
b0aeadb3 DE |
6464 | /* At most one of these may be provided. */ |
6465 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6466 | |
b0c7bfa9 DE |
6467 | /* These attributes aren't processed until later: |
6468 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6469 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6470 | referenced later. However, these attributes are found in the stub | |
6471 | which we won't have later. In order to not impose this complication | |
6472 | on the rest of the code, we read them here and copy them to the | |
6473 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6474 | |
6475 | stmt_list = NULL; | |
6476 | low_pc = NULL; | |
6477 | high_pc = NULL; | |
6478 | ranges = NULL; | |
6479 | comp_dir = NULL; | |
6480 | ||
6481 | if (stub_comp_unit_die != NULL) | |
6482 | { | |
6483 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6484 | DWO file. */ | |
6485 | if (! this_cu->is_debug_types) | |
6486 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
6487 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6488 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
6489 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
6490 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
6491 | ||
a39fdb41 | 6492 | cu->addr_base = stub_comp_unit_die->addr_base (); |
b0c7bfa9 | 6493 | |
18a8505e AT |
6494 | /* There should be a DW_AT_rnglists_base (DW_AT_GNU_ranges_base) attribute |
6495 | here (if needed). We need the value before we can process | |
6496 | DW_AT_ranges. */ | |
a39fdb41 | 6497 | cu->ranges_base = stub_comp_unit_die->ranges_base (); |
b0c7bfa9 | 6498 | } |
a2ce51a0 DE |
6499 | else if (stub_comp_dir != NULL) |
6500 | { | |
6501 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 6502 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
6503 | comp_dir->name = DW_AT_comp_dir; |
6504 | comp_dir->form = DW_FORM_string; | |
6505 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
6506 | DW_STRING (comp_dir) = stub_comp_dir; | |
6507 | } | |
b0c7bfa9 DE |
6508 | |
6509 | /* Set up for reading the DWO CU/TU. */ | |
6510 | cu->dwo_unit = dwo_unit; | |
685af9cd | 6511 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
6512 | section->read (objfile); |
6513 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
6514 | begin_info_ptr = info_ptr = (section->buffer |
6515 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 6516 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 DE |
6517 | |
6518 | if (this_cu->is_debug_types) | |
6519 | { | |
b0c7bfa9 DE |
6520 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
6521 | ||
ed2dc618 SM |
6522 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6523 | &cu->header, section, | |
b0c7bfa9 | 6524 | dwo_abbrev_section, |
43988095 | 6525 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 6526 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 6527 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
6528 | { |
6529 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 6530 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 6531 | hex_string (sig_type->signature), |
43988095 | 6532 | hex_string (cu->header.signature), |
9d8780f0 | 6533 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
6534 | bfd_get_filename (abfd)); |
6535 | } | |
9c541725 | 6536 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6537 | /* For DWOs coming from DWP files, we don't know the CU length |
6538 | nor the type's offset in the TU until now. */ | |
4057dfde | 6539 | dwo_unit->length = cu->header.get_length (); |
9c541725 | 6540 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
6541 | |
6542 | /* Establish the type offset that can be used to lookup the type. | |
6543 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
6544 | sig_type->type_offset_in_section |
6545 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
6546 | } |
6547 | else | |
6548 | { | |
ed2dc618 SM |
6549 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6550 | &cu->header, section, | |
b0c7bfa9 | 6551 | dwo_abbrev_section, |
43988095 | 6552 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 6553 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6554 | /* For DWOs coming from DWP files, we don't know the CU length |
6555 | until now. */ | |
4057dfde | 6556 | dwo_unit->length = cu->header.get_length (); |
b0c7bfa9 DE |
6557 | } |
6558 | ||
685af9cd | 6559 | *result_dwo_abbrev_table |
86de1d91 TT |
6560 | = abbrev_table::read (objfile, dwo_abbrev_section, |
6561 | cu->header.abbrev_sect_off); | |
685af9cd TT |
6562 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, |
6563 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
6564 | |
6565 | /* Read in the die, but leave space to copy over the attributes | |
6566 | from the stub. This has the benefit of simplifying the rest of | |
6567 | the code - all the work to maintain the illusion of a single | |
6568 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
6569 | num_extra_attrs = ((stmt_list != NULL) | |
6570 | + (low_pc != NULL) | |
6571 | + (high_pc != NULL) | |
6572 | + (ranges != NULL) | |
6573 | + (comp_dir != NULL)); | |
6574 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
3e225074 | 6575 | num_extra_attrs); |
b0c7bfa9 DE |
6576 | |
6577 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
6578 | comp_unit_die = *result_comp_unit_die; | |
6579 | i = comp_unit_die->num_attrs; | |
6580 | if (stmt_list != NULL) | |
6581 | comp_unit_die->attrs[i++] = *stmt_list; | |
6582 | if (low_pc != NULL) | |
6583 | comp_unit_die->attrs[i++] = *low_pc; | |
6584 | if (high_pc != NULL) | |
6585 | comp_unit_die->attrs[i++] = *high_pc; | |
6586 | if (ranges != NULL) | |
6587 | comp_unit_die->attrs[i++] = *ranges; | |
6588 | if (comp_dir != NULL) | |
6589 | comp_unit_die->attrs[i++] = *comp_dir; | |
6590 | comp_unit_die->num_attrs += num_extra_attrs; | |
6591 | ||
b4f54984 | 6592 | if (dwarf_die_debug) |
bf6af496 DE |
6593 | { |
6594 | fprintf_unfiltered (gdb_stdlog, | |
6595 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 6596 | section->get_name (), |
bf6af496 DE |
6597 | (unsigned) (begin_info_ptr - section->buffer), |
6598 | bfd_get_filename (abfd)); | |
b4f54984 | 6599 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
6600 | } |
6601 | ||
b0c7bfa9 DE |
6602 | /* Skip dummy compilation units. */ |
6603 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
6604 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
6605 | return 0; | |
6606 | ||
6607 | *result_info_ptr = info_ptr; | |
6608 | return 1; | |
6609 | } | |
6610 | ||
a084a2a6 AT |
6611 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
6612 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
6613 | signature is part of the header. */ | |
6614 | static gdb::optional<ULONGEST> | |
6615 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
6616 | { | |
6617 | if (cu->header.version >= 5) | |
6618 | return cu->header.signature; | |
6619 | struct attribute *attr; | |
6620 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
6621 | if (attr == nullptr) | |
6622 | return gdb::optional<ULONGEST> (); | |
6623 | return DW_UNSND (attr); | |
6624 | } | |
6625 | ||
c0ab21c2 | 6626 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6627 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 6628 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
6629 | |
6630 | static struct dwo_unit * | |
6631 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
c0ab21c2 TT |
6632 | struct die_info *comp_unit_die, |
6633 | const char *dwo_name) | |
b0c7bfa9 DE |
6634 | { |
6635 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 6636 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 6637 | const char *comp_dir; |
b0c7bfa9 | 6638 | |
a2ce51a0 DE |
6639 | gdb_assert (cu != NULL); |
6640 | ||
b0c7bfa9 | 6641 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 6642 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 6643 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 DE |
6644 | |
6645 | if (this_cu->is_debug_types) | |
6646 | { | |
6647 | struct signatured_type *sig_type; | |
6648 | ||
6649 | /* Since this_cu is the first member of struct signatured_type, | |
6650 | we can go from a pointer to one to a pointer to the other. */ | |
6651 | sig_type = (struct signatured_type *) this_cu; | |
b0c7bfa9 DE |
6652 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); |
6653 | } | |
6654 | else | |
6655 | { | |
a084a2a6 AT |
6656 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
6657 | if (!signature.has_value ()) | |
b0c7bfa9 DE |
6658 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
6659 | " [in module %s]"), | |
e3b94546 | 6660 | dwo_name, objfile_name (this_cu->dwarf2_per_objfile->objfile)); |
b0c7bfa9 | 6661 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, |
a084a2a6 | 6662 | *signature); |
b0c7bfa9 DE |
6663 | } |
6664 | ||
b0c7bfa9 DE |
6665 | return dwo_unit; |
6666 | } | |
6667 | ||
c0ab21c2 | 6668 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 6669 | See it for a description of the parameters. |
fcd3b13d | 6670 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 6671 | |
c0ab21c2 TT |
6672 | void |
6673 | cutu_reader::init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, | |
6751ebae | 6674 | int use_existing_cu) |
a2ce51a0 | 6675 | { |
a2ce51a0 | 6676 | struct signatured_type *sig_type; |
a2ce51a0 DE |
6677 | |
6678 | /* Verify we can do the following downcast, and that we have the | |
6679 | data we need. */ | |
6680 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
6681 | sig_type = (struct signatured_type *) this_cu; | |
6682 | gdb_assert (sig_type->dwo_unit != NULL); | |
6683 | ||
6aa5f3a6 DE |
6684 | if (use_existing_cu && this_cu->cu != NULL) |
6685 | { | |
6686 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 6687 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 6688 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
6689 | } |
6690 | else | |
6691 | { | |
6692 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
6693 | gdb_assert (this_cu->cu == NULL); | |
c0ab21c2 | 6694 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
6aa5f3a6 DE |
6695 | } |
6696 | ||
6697 | /* A future optimization, if needed, would be to use an existing | |
6698 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
6699 | could share abbrev tables. */ | |
a2ce51a0 DE |
6700 | |
6701 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, | |
a2ce51a0 DE |
6702 | NULL /* stub_comp_unit_die */, |
6703 | sig_type->dwo_unit->dwo_file->comp_dir, | |
4ebe4877 | 6704 | this, &info_ptr, |
3e225074 | 6705 | &comp_unit_die, |
c0ab21c2 | 6706 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
6707 | { |
6708 | /* Dummy die. */ | |
c0ab21c2 | 6709 | dummy_p = true; |
a2ce51a0 | 6710 | } |
a2ce51a0 DE |
6711 | } |
6712 | ||
fd820528 | 6713 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 6714 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 6715 | |
f4dc4d17 DE |
6716 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
6717 | Otherwise the table specified in the comp unit header is read in and used. | |
6718 | This is an optimization for when we already have the abbrev table. | |
6719 | ||
dee91e82 | 6720 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
6751ebae | 6721 | Otherwise, a new CU is allocated with xmalloc. */ |
aaa75496 | 6722 | |
c0ab21c2 TT |
6723 | cutu_reader::cutu_reader (struct dwarf2_per_cu_data *this_cu, |
6724 | struct abbrev_table *abbrev_table, | |
6751ebae | 6725 | int use_existing_cu, |
c0ab21c2 TT |
6726 | bool skip_partial) |
6727 | : die_reader_specs {}, | |
6751ebae | 6728 | m_this_cu (this_cu) |
c906108c | 6729 | { |
ed2dc618 | 6730 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 6731 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 6732 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 6733 | bfd *abfd = section->get_bfd_owner (); |
dee91e82 | 6734 | struct dwarf2_cu *cu; |
c0ab21c2 | 6735 | const gdb_byte *begin_info_ptr; |
dee91e82 | 6736 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 6737 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
6738 | /* Non-zero if CU currently points to a DWO file and we need to |
6739 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 6740 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 6741 | int rereading_dwo_cu = 0; |
c906108c | 6742 | |
b4f54984 | 6743 | if (dwarf_die_debug) |
9d8780f0 | 6744 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 6745 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 6746 | sect_offset_str (this_cu->sect_off)); |
09406207 | 6747 | |
a2ce51a0 DE |
6748 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
6749 | file (instead of going through the stub), short-circuit all of this. */ | |
6750 | if (this_cu->reading_dwo_directly) | |
6751 | { | |
6752 | /* Narrow down the scope of possibilities to have to understand. */ | |
6753 | gdb_assert (this_cu->is_debug_types); | |
6754 | gdb_assert (abbrev_table == NULL); | |
6751ebae | 6755 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu); |
a2ce51a0 DE |
6756 | return; |
6757 | } | |
6758 | ||
dee91e82 | 6759 | /* This is cheap if the section is already read in. */ |
96b79293 | 6760 | section->read (objfile); |
dee91e82 | 6761 | |
9c541725 | 6762 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
6763 | |
6764 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
6765 | |
6766 | if (use_existing_cu && this_cu->cu != NULL) | |
6767 | { | |
6768 | cu = this_cu->cu; | |
42e7ad6c DE |
6769 | /* If this CU is from a DWO file we need to start over, we need to |
6770 | refetch the attributes from the skeleton CU. | |
6771 | This could be optimized by retrieving those attributes from when we | |
6772 | were here the first time: the previous comp_unit_die was stored in | |
6773 | comp_unit_obstack. But there's no data yet that we need this | |
6774 | optimization. */ | |
6775 | if (cu->dwo_unit != NULL) | |
6776 | rereading_dwo_cu = 1; | |
dee91e82 DE |
6777 | } |
6778 | else | |
6779 | { | |
6780 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
6781 | gdb_assert (this_cu->cu == NULL); | |
c0ab21c2 TT |
6782 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
6783 | cu = m_new_cu.get (); | |
42e7ad6c | 6784 | } |
dee91e82 | 6785 | |
b0c7bfa9 | 6786 | /* Get the header. */ |
9c541725 | 6787 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
6788 | { |
6789 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 6790 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
6791 | } |
6792 | else | |
6793 | { | |
3019eac3 | 6794 | if (this_cu->is_debug_types) |
dee91e82 | 6795 | { |
ed2dc618 SM |
6796 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6797 | &cu->header, section, | |
4bdcc0c1 | 6798 | abbrev_section, info_ptr, |
43988095 | 6799 | rcuh_kind::TYPE); |
dee91e82 | 6800 | |
42e7ad6c DE |
6801 | /* Since per_cu is the first member of struct signatured_type, |
6802 | we can go from a pointer to one to a pointer to the other. */ | |
6803 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 6804 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
6805 | gdb_assert (sig_type->type_offset_in_tu |
6806 | == cu->header.type_cu_offset_in_tu); | |
6807 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 6808 | |
42e7ad6c DE |
6809 | /* LENGTH has not been set yet for type units if we're |
6810 | using .gdb_index. */ | |
4057dfde | 6811 | this_cu->length = cu->header.get_length (); |
3019eac3 DE |
6812 | |
6813 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
6814 | sig_type->type_offset_in_section = |
6815 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
6816 | |
6817 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
6818 | } |
6819 | else | |
6820 | { | |
ed2dc618 SM |
6821 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6822 | &cu->header, section, | |
4bdcc0c1 | 6823 | abbrev_section, |
43988095 JK |
6824 | info_ptr, |
6825 | rcuh_kind::COMPILE); | |
dee91e82 | 6826 | |
9c541725 | 6827 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
4057dfde | 6828 | gdb_assert (this_cu->length == cu->header.get_length ()); |
43988095 | 6829 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
6830 | } |
6831 | } | |
10b3939b | 6832 | |
6caca83c | 6833 | /* Skip dummy compilation units. */ |
dee91e82 | 6834 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 6835 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
6836 | { |
6837 | dummy_p = true; | |
6838 | return; | |
6839 | } | |
6caca83c | 6840 | |
433df2d4 DE |
6841 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
6842 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 6843 | done. */ |
f4dc4d17 | 6844 | if (abbrev_table != NULL) |
685af9cd TT |
6845 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
6846 | else | |
f4dc4d17 | 6847 | { |
c0ab21c2 | 6848 | m_abbrev_table_holder |
86de1d91 TT |
6849 | = abbrev_table::read (objfile, abbrev_section, |
6850 | cu->header.abbrev_sect_off); | |
c0ab21c2 | 6851 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 6852 | } |
af703f96 | 6853 | |
dee91e82 | 6854 | /* Read the top level CU/TU die. */ |
c0ab21c2 | 6855 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
3e225074 | 6856 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
93311388 | 6857 | |
58f0c718 | 6858 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
6859 | { |
6860 | dummy_p = true; | |
6861 | return; | |
6862 | } | |
58f0c718 | 6863 | |
b0c7bfa9 | 6864 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
6865 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
6866 | table from the DWO file and pass the ownership over to us. It will be | |
6867 | referenced from READER, so we must make sure to free it after we're done | |
6868 | with READER. | |
6869 | ||
b0c7bfa9 DE |
6870 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
6871 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 6872 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 6873 | if (dwo_name != nullptr) |
3019eac3 | 6874 | { |
3019eac3 | 6875 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 6876 | struct die_info *dwo_comp_unit_die; |
3019eac3 | 6877 | |
3e225074 | 6878 | if (comp_unit_die->has_children) |
6a506a2d | 6879 | { |
b98664d3 | 6880 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
6881 | " has children (offset %s) [in module %s]"), |
6882 | sect_offset_str (this_cu->sect_off), | |
6883 | bfd_get_filename (abfd)); | |
6a506a2d | 6884 | } |
c0ab21c2 | 6885 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die, dwo_name); |
6a506a2d | 6886 | if (dwo_unit != NULL) |
3019eac3 | 6887 | { |
6a506a2d | 6888 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
a2ce51a0 | 6889 | comp_unit_die, NULL, |
c0ab21c2 | 6890 | this, &info_ptr, |
3e225074 | 6891 | &dwo_comp_unit_die, |
c0ab21c2 | 6892 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
6893 | { |
6894 | /* Dummy die. */ | |
c0ab21c2 | 6895 | dummy_p = true; |
6a506a2d DE |
6896 | return; |
6897 | } | |
6898 | comp_unit_die = dwo_comp_unit_die; | |
6899 | } | |
6900 | else | |
6901 | { | |
6902 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
6903 | the stub. A complaint has already been logged. There's | |
6904 | not much more we can do except pass on the stub DIE to | |
6905 | die_reader_func. We don't want to throw an error on bad | |
6906 | debug info. */ | |
3019eac3 DE |
6907 | } |
6908 | } | |
c0ab21c2 | 6909 | } |
3019eac3 | 6910 | |
6751ebae TT |
6911 | void |
6912 | cutu_reader::keep () | |
c0ab21c2 | 6913 | { |
b0c7bfa9 | 6914 | /* Done, clean up. */ |
6751ebae TT |
6915 | gdb_assert (!dummy_p); |
6916 | if (m_new_cu != NULL) | |
348e048f | 6917 | { |
c0ab21c2 TT |
6918 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6919 | = m_this_cu->dwarf2_per_objfile; | |
fcd3b13d | 6920 | /* Link this CU into read_in_chain. */ |
c0ab21c2 TT |
6921 | m_this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; |
6922 | dwarf2_per_objfile->read_in_chain = m_this_cu; | |
fcd3b13d | 6923 | /* The chain owns it now. */ |
c0ab21c2 | 6924 | m_new_cu.release (); |
348e048f | 6925 | } |
dee91e82 DE |
6926 | } |
6927 | ||
18a8505e AT |
6928 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
6929 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
6930 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
6931 | |
6932 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 6933 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
6934 | |
6935 | We fill in THIS_CU->length. | |
6936 | ||
dee91e82 | 6937 | THIS_CU->cu is always freed when done. |
3019eac3 | 6938 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
6939 | to care whether it refers to the "main" CU or the DWO CU. |
6940 | ||
6941 | When parent_cu is passed, it is used to provide a default value for | |
6942 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 6943 | |
c0ab21c2 TT |
6944 | cutu_reader::cutu_reader (struct dwarf2_per_cu_data *this_cu, |
6945 | struct dwarf2_cu *parent_cu, | |
6946 | struct dwo_file *dwo_file) | |
6947 | : die_reader_specs {}, | |
6948 | m_this_cu (this_cu) | |
dee91e82 | 6949 | { |
ed2dc618 | 6950 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 6951 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 6952 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 6953 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 6954 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 6955 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 6956 | |
b4f54984 | 6957 | if (dwarf_die_debug) |
9d8780f0 | 6958 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 6959 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 6960 | sect_offset_str (this_cu->sect_off)); |
09406207 | 6961 | |
dee91e82 DE |
6962 | gdb_assert (this_cu->cu == NULL); |
6963 | ||
33e80786 DE |
6964 | abbrev_section = (dwo_file != NULL |
6965 | ? &dwo_file->sections.abbrev | |
6966 | : get_abbrev_section_for_cu (this_cu)); | |
6967 | ||
dee91e82 | 6968 | /* This is cheap if the section is already read in. */ |
96b79293 | 6969 | section->read (objfile); |
dee91e82 | 6970 | |
c0ab21c2 | 6971 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
dee91e82 | 6972 | |
9c541725 | 6973 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
ed2dc618 | 6974 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
c0ab21c2 | 6975 | &m_new_cu->header, section, |
4bdcc0c1 | 6976 | abbrev_section, info_ptr, |
43988095 JK |
6977 | (this_cu->is_debug_types |
6978 | ? rcuh_kind::TYPE | |
6979 | : rcuh_kind::COMPILE)); | |
dee91e82 | 6980 | |
18a8505e AT |
6981 | if (parent_cu != nullptr) |
6982 | { | |
c0ab21c2 TT |
6983 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
6984 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 6985 | } |
4057dfde | 6986 | this_cu->length = m_new_cu->header.get_length (); |
dee91e82 DE |
6987 | |
6988 | /* Skip dummy compilation units. */ | |
6989 | if (info_ptr >= begin_info_ptr + this_cu->length | |
6990 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
6991 | { |
6992 | dummy_p = true; | |
6993 | return; | |
6994 | } | |
72bf9492 | 6995 | |
c0ab21c2 | 6996 | m_abbrev_table_holder |
86de1d91 TT |
6997 | = abbrev_table::read (objfile, abbrev_section, |
6998 | m_new_cu->header.abbrev_sect_off); | |
dee91e82 | 6999 | |
c0ab21c2 TT |
7000 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
7001 | m_abbrev_table_holder.get ()); | |
3e225074 | 7002 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
dee91e82 DE |
7003 | } |
7004 | ||
0018ea6f DE |
7005 | \f |
7006 | /* Type Unit Groups. | |
dee91e82 | 7007 | |
0018ea6f DE |
7008 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7009 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7010 | so that all types coming from the same compilation (.o file) are grouped | |
7011 | together. A future step could be to put the types in the same symtab as | |
7012 | the CU the types ultimately came from. */ | |
ff013f42 | 7013 | |
f4dc4d17 DE |
7014 | static hashval_t |
7015 | hash_type_unit_group (const void *item) | |
7016 | { | |
9a3c8263 SM |
7017 | const struct type_unit_group *tu_group |
7018 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7019 | |
094b34ac | 7020 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7021 | } |
348e048f DE |
7022 | |
7023 | static int | |
f4dc4d17 | 7024 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7025 | { |
9a3c8263 SM |
7026 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7027 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7028 | |
094b34ac | 7029 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7030 | } |
348e048f | 7031 | |
f4dc4d17 DE |
7032 | /* Allocate a hash table for type unit groups. */ |
7033 | ||
eaa5fa8b | 7034 | static htab_up |
298e9637 | 7035 | allocate_type_unit_groups_table () |
f4dc4d17 | 7036 | { |
eaa5fa8b TT |
7037 | return htab_up (htab_create_alloc (3, |
7038 | hash_type_unit_group, | |
7039 | eq_type_unit_group, | |
7040 | NULL, xcalloc, xfree)); | |
f4dc4d17 | 7041 | } |
dee91e82 | 7042 | |
f4dc4d17 DE |
7043 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7044 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7045 | of any one psymtab grow too big. */ | |
7046 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7047 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7048 | |
094b34ac | 7049 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7050 | Create the type_unit_group object used to hold one or more TUs. */ |
7051 | ||
7052 | static struct type_unit_group * | |
094b34ac | 7053 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7054 | { |
518817b3 SM |
7055 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7056 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 | 7057 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 7058 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7059 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
7060 | |
7061 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7062 | struct type_unit_group); | |
094b34ac | 7063 | per_cu = &tu_group->per_cu; |
518817b3 | 7064 | per_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
f4dc4d17 | 7065 | |
094b34ac DE |
7066 | if (dwarf2_per_objfile->using_index) |
7067 | { | |
7068 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7069 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
7070 | } |
7071 | else | |
7072 | { | |
9c541725 | 7073 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7074 | dwarf2_psymtab *pst; |
528e1572 | 7075 | std::string name; |
094b34ac DE |
7076 | |
7077 | /* Give the symtab a useful name for debug purposes. */ | |
7078 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7079 | name = string_printf ("<type_units_%d>", |
7080 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7081 | else |
528e1572 | 7082 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7083 | |
528e1572 | 7084 | pst = create_partial_symtab (per_cu, name.c_str ()); |
6d94535f | 7085 | pst->anonymous = true; |
094b34ac | 7086 | } |
f4dc4d17 | 7087 | |
094b34ac | 7088 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7089 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7090 | |
7091 | return tu_group; | |
7092 | } | |
7093 | ||
094b34ac DE |
7094 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7095 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7096 | |
7097 | static struct type_unit_group * | |
ff39bb5e | 7098 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7099 | { |
518817b3 SM |
7100 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7101 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 DE |
7102 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
7103 | struct type_unit_group *tu_group; | |
7104 | void **slot; | |
7105 | unsigned int line_offset; | |
7106 | struct type_unit_group type_unit_group_for_lookup; | |
7107 | ||
7108 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
298e9637 | 7109 | dwarf2_per_objfile->type_unit_groups = allocate_type_unit_groups_table (); |
f4dc4d17 DE |
7110 | |
7111 | /* Do we need to create a new group, or can we use an existing one? */ | |
7112 | ||
7113 | if (stmt_list) | |
7114 | { | |
7115 | line_offset = DW_UNSND (stmt_list); | |
7116 | ++tu_stats->nr_symtab_sharers; | |
7117 | } | |
7118 | else | |
7119 | { | |
7120 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7121 | We can do various things here like create one group per TU or | |
7122 | spread them over multiple groups to split up the expansion work. | |
7123 | To avoid worst case scenarios (too many groups or too large groups) | |
7124 | we, umm, group them in bunches. */ | |
7125 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7126 | | (tu_stats->nr_stmt_less_type_units | |
7127 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7128 | ++tu_stats->nr_stmt_less_type_units; | |
7129 | } | |
7130 | ||
094b34ac | 7131 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7132 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
eaa5fa8b | 7133 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups.get (), |
f4dc4d17 DE |
7134 | &type_unit_group_for_lookup, INSERT); |
7135 | if (*slot != NULL) | |
7136 | { | |
9a3c8263 | 7137 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7138 | gdb_assert (tu_group != NULL); |
7139 | } | |
7140 | else | |
7141 | { | |
9c541725 | 7142 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7143 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7144 | *slot = tu_group; |
7145 | ++tu_stats->nr_symtabs; | |
7146 | } | |
7147 | ||
7148 | return tu_group; | |
7149 | } | |
0018ea6f DE |
7150 | \f |
7151 | /* Partial symbol tables. */ | |
7152 | ||
7153 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7154 | ||
7155 | The caller must fill in the following details: | |
7156 | dirname, textlow, texthigh. */ | |
7157 | ||
891813be | 7158 | static dwarf2_psymtab * |
0018ea6f DE |
7159 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) |
7160 | { | |
e3b94546 | 7161 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
891813be | 7162 | dwarf2_psymtab *pst; |
0018ea6f | 7163 | |
891813be | 7164 | pst = new dwarf2_psymtab (name, objfile, 0); |
0018ea6f | 7165 | |
6d94535f | 7166 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7167 | |
7168 | /* This is the glue that links PST into GDB's symbol API. */ | |
891813be | 7169 | pst->per_cu_data = per_cu; |
0018ea6f DE |
7170 | per_cu->v.psymtab = pst; |
7171 | ||
7172 | return pst; | |
7173 | } | |
7174 | ||
c0ab21c2 | 7175 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7176 | |
7177 | static void | |
7178 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7179 | const gdb_byte *info_ptr, |
0018ea6f | 7180 | struct die_info *comp_unit_die, |
c0ab21c2 | 7181 | enum language pretend_language) |
0018ea6f DE |
7182 | { |
7183 | struct dwarf2_cu *cu = reader->cu; | |
518817b3 | 7184 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 7185 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f | 7186 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7187 | CORE_ADDR baseaddr; |
7188 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7189 | dwarf2_psymtab *pst; |
3a2b436a | 7190 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7191 | const char *filename; |
0018ea6f | 7192 | |
0018ea6f DE |
7193 | gdb_assert (! per_cu->is_debug_types); |
7194 | ||
c0ab21c2 | 7195 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7196 | |
0018ea6f | 7197 | /* Allocate a new partial symbol table structure. */ |
2e927613 TV |
7198 | gdb::unique_xmalloc_ptr<char> debug_filename; |
7199 | static const char artificial[] = "<artificial>"; | |
7d45c7c3 KB |
7200 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7201 | if (filename == NULL) | |
0018ea6f | 7202 | filename = ""; |
2e927613 TV |
7203 | else if (strcmp (filename, artificial) == 0) |
7204 | { | |
7205 | debug_filename.reset (concat (artificial, "@", | |
85f0dd3c TV |
7206 | sect_offset_str (per_cu->sect_off), |
7207 | (char *) NULL)); | |
2e927613 TV |
7208 | filename = debug_filename.get (); |
7209 | } | |
0018ea6f DE |
7210 | |
7211 | pst = create_partial_symtab (per_cu, filename); | |
7212 | ||
7213 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7214 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7215 | |
b3b3bada | 7216 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7217 | |
7218 | dwarf2_find_base_address (comp_unit_die, cu); | |
7219 | ||
7220 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7221 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7222 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7223 | &best_highpc, cu, pst); | |
7224 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7225 | { |
7226 | CORE_ADDR low | |
7227 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7228 | - baseaddr); | |
7229 | CORE_ADDR high | |
7230 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7231 | - baseaddr - 1); | |
7232 | /* Store the contiguous range if it is not empty; it can be | |
7233 | empty for CUs with no code. */ | |
d320c2b5 TT |
7234 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
7235 | low, high, pst); | |
79748972 | 7236 | } |
0018ea6f DE |
7237 | |
7238 | /* Check if comp unit has_children. | |
7239 | If so, read the rest of the partial symbols from this comp unit. | |
7240 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7241 | if (comp_unit_die->has_children) |
0018ea6f DE |
7242 | { |
7243 | struct partial_die_info *first_die; | |
7244 | CORE_ADDR lowpc, highpc; | |
7245 | ||
7246 | lowpc = ((CORE_ADDR) -1); | |
7247 | highpc = ((CORE_ADDR) 0); | |
7248 | ||
7249 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7250 | ||
7251 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7252 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7253 | |
7254 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7255 | complaints from `maint check'. */ | |
7256 | if (lowpc == ((CORE_ADDR) -1)) | |
7257 | lowpc = highpc; | |
7258 | ||
7259 | /* If the compilation unit didn't have an explicit address range, | |
7260 | then use the information extracted from its child dies. */ | |
e385593e | 7261 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7262 | { |
7263 | best_lowpc = lowpc; | |
7264 | best_highpc = highpc; | |
7265 | } | |
7266 | } | |
4ae976d1 | 7267 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7268 | best_lowpc + baseaddr) |
7269 | - baseaddr); | |
4ae976d1 | 7270 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7271 | best_highpc + baseaddr) |
7272 | - baseaddr); | |
0018ea6f | 7273 | |
8763cede | 7274 | end_psymtab_common (objfile, pst); |
0018ea6f | 7275 | |
ae640021 | 7276 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7277 | { |
7278 | int i; | |
ae640021 | 7279 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7280 | |
7281 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7282 | post-pass. */ | |
7283 | pst->number_of_dependencies = len; | |
a9342b62 TT |
7284 | pst->dependencies |
7285 | = objfile->partial_symtabs->allocate_dependencies (len); | |
ae640021 AB |
7286 | for (i = 0; i < len; ++i) |
7287 | { | |
7288 | pst->dependencies[i] | |
7289 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7290 | } | |
0018ea6f | 7291 | |
ae640021 | 7292 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7293 | } |
7294 | ||
7295 | /* Get the list of files included in the current compilation unit, | |
7296 | and build a psymtab for each of them. */ | |
7297 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7298 | ||
b4f54984 | 7299 | if (dwarf_read_debug) |
b926417a TT |
7300 | fprintf_unfiltered (gdb_stdlog, |
7301 | "Psymtab for %s unit @%s: %s - %s" | |
7302 | ", %d global, %d static syms\n", | |
7303 | per_cu->is_debug_types ? "type" : "comp", | |
7304 | sect_offset_str (per_cu->sect_off), | |
7305 | paddress (gdbarch, pst->text_low (objfile)), | |
7306 | paddress (gdbarch, pst->text_high (objfile)), | |
7307 | pst->n_global_syms, pst->n_static_syms); | |
0018ea6f DE |
7308 | } |
7309 | ||
7310 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7311 | Process compilation unit THIS_CU for a psymtab. */ | |
7312 | ||
7313 | static void | |
7314 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
135f5437 | 7315 | bool want_partial_unit, |
b93601f3 | 7316 | enum language pretend_language) |
0018ea6f DE |
7317 | { |
7318 | /* If this compilation unit was already read in, free the | |
7319 | cached copy in order to read it in again. This is | |
7320 | necessary because we skipped some symbols when we first | |
7321 | read in the compilation unit (see load_partial_dies). | |
7322 | This problem could be avoided, but the benefit is unclear. */ | |
7323 | if (this_cu->cu != NULL) | |
7324 | free_one_cached_comp_unit (this_cu); | |
7325 | ||
6751ebae | 7326 | cutu_reader reader (this_cu, NULL, 0, false); |
c0ab21c2 | 7327 | |
58990295 TV |
7328 | switch (reader.comp_unit_die->tag) |
7329 | { | |
7330 | case DW_TAG_compile_unit: | |
7331 | this_cu->unit_type = DW_UT_compile; | |
7332 | break; | |
7333 | case DW_TAG_partial_unit: | |
7334 | this_cu->unit_type = DW_UT_partial; | |
7335 | break; | |
7336 | default: | |
7337 | abort (); | |
7338 | } | |
7339 | ||
c0ab21c2 | 7340 | if (reader.dummy_p) |
f1902523 | 7341 | { |
c0ab21c2 | 7342 | /* Nothing. */ |
f1902523 | 7343 | } |
c0ab21c2 | 7344 | else if (this_cu->is_debug_types) |
3e225074 TT |
7345 | build_type_psymtabs_reader (&reader, reader.info_ptr, |
7346 | reader.comp_unit_die); | |
135f5437 TT |
7347 | else if (want_partial_unit |
7348 | || reader.comp_unit_die->tag != DW_TAG_partial_unit) | |
c0ab21c2 TT |
7349 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, |
7350 | reader.comp_unit_die, | |
c0ab21c2 | 7351 | pretend_language); |
0018ea6f | 7352 | |
58990295 TV |
7353 | this_cu->lang = this_cu->cu->language; |
7354 | ||
0018ea6f | 7355 | /* Age out any secondary CUs. */ |
ed2dc618 | 7356 | age_cached_comp_units (this_cu->dwarf2_per_objfile); |
0018ea6f | 7357 | } |
f4dc4d17 DE |
7358 | |
7359 | /* Reader function for build_type_psymtabs. */ | |
7360 | ||
7361 | static void | |
7362 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7363 | const gdb_byte *info_ptr, |
3e225074 | 7364 | struct die_info *type_unit_die) |
f4dc4d17 | 7365 | { |
ed2dc618 | 7366 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 7367 | = reader->cu->per_cu->dwarf2_per_objfile; |
f4dc4d17 DE |
7368 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7369 | struct dwarf2_cu *cu = reader->cu; | |
7370 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7371 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7372 | struct type_unit_group *tu_group; |
7373 | struct attribute *attr; | |
7374 | struct partial_die_info *first_die; | |
7375 | CORE_ADDR lowpc, highpc; | |
891813be | 7376 | dwarf2_psymtab *pst; |
f4dc4d17 | 7377 | |
0186c6a7 DE |
7378 | gdb_assert (per_cu->is_debug_types); |
7379 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 7380 | |
3e225074 | 7381 | if (! type_unit_die->has_children) |
f4dc4d17 DE |
7382 | return; |
7383 | ||
052c8bb8 | 7384 | attr = type_unit_die->attr (DW_AT_stmt_list); |
094b34ac | 7385 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7386 | |
df07e2c7 | 7387 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7388 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7389 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7390 | |
7391 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
f4dc4d17 | 7392 | pst = create_partial_symtab (per_cu, ""); |
6d94535f | 7393 | pst->anonymous = true; |
f4dc4d17 DE |
7394 | |
7395 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7396 | ||
7397 | lowpc = (CORE_ADDR) -1; | |
7398 | highpc = (CORE_ADDR) 0; | |
7399 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7400 | ||
8763cede | 7401 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
7402 | } |
7403 | ||
73051182 DE |
7404 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7405 | ||
7406 | struct tu_abbrev_offset | |
7407 | { | |
b2bdb8cf SM |
7408 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7409 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7410 | {} | |
7411 | ||
7412 | signatured_type *sig_type; | |
73051182 DE |
7413 | sect_offset abbrev_offset; |
7414 | }; | |
7415 | ||
484cf504 | 7416 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 7417 | |
484cf504 TT |
7418 | static bool |
7419 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7420 | const struct tu_abbrev_offset &b) | |
73051182 | 7421 | { |
484cf504 | 7422 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7423 | } |
7424 | ||
7425 | /* Efficiently read all the type units. | |
7426 | This does the bulk of the work for build_type_psymtabs. | |
7427 | ||
7428 | The efficiency is because we sort TUs by the abbrev table they use and | |
7429 | only read each abbrev table once. In one program there are 200K TUs | |
7430 | sharing 8K abbrev tables. | |
7431 | ||
7432 | The main purpose of this function is to support building the | |
7433 | dwarf2_per_objfile->type_unit_groups table. | |
7434 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
7435 | can collapse the search space by grouping them by stmt_list. | |
7436 | The savings can be significant, in the same program from above the 200K TUs | |
7437 | share 8K stmt_list tables. | |
7438 | ||
7439 | FUNC is expected to call get_type_unit_group, which will create the | |
7440 | struct type_unit_group if necessary and add it to | |
7441 | dwarf2_per_objfile->type_unit_groups. */ | |
7442 | ||
7443 | static void | |
ed2dc618 | 7444 | build_type_psymtabs_1 (struct dwarf2_per_objfile *dwarf2_per_objfile) |
73051182 | 7445 | { |
73051182 | 7446 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
685af9cd | 7447 | abbrev_table_up abbrev_table; |
73051182 | 7448 | sect_offset abbrev_offset; |
73051182 DE |
7449 | |
7450 | /* It's up to the caller to not call us multiple times. */ | |
7451 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
7452 | ||
b2bdb8cf | 7453 | if (dwarf2_per_objfile->all_type_units.empty ()) |
73051182 DE |
7454 | return; |
7455 | ||
7456 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7457 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7458 | read each abbrev table in. | |
7459 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7460 | This is simpler and efficient enough for now. | |
7461 | ||
7462 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7463 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7464 | stmt_list value too so in practice this should work well. | |
7465 | ||
7466 | The basic algorithm here is: | |
7467 | ||
7468 | sort TUs by abbrev table | |
7469 | for each TU with same abbrev table: | |
7470 | read abbrev table if first user | |
7471 | read TU top level DIE | |
7472 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7473 | call FUNC */ | |
7474 | ||
b4f54984 | 7475 | if (dwarf_read_debug) |
73051182 DE |
7476 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
7477 | ||
7478 | /* Sort in a separate table to maintain the order of all_type_units | |
7479 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf SM |
7480 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
7481 | sorted_by_abbrev.reserve (dwarf2_per_objfile->all_type_units.size ()); | |
7482 | ||
7483 | for (signatured_type *sig_type : dwarf2_per_objfile->all_type_units) | |
7484 | sorted_by_abbrev.emplace_back | |
7485 | (sig_type, read_abbrev_offset (dwarf2_per_objfile, | |
7486 | sig_type->per_cu.section, | |
7487 | sig_type->per_cu.sect_off)); | |
73051182 | 7488 | |
484cf504 TT |
7489 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7490 | sort_tu_by_abbrev_offset); | |
73051182 | 7491 | |
9c541725 | 7492 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 7493 | |
b2bdb8cf | 7494 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 7495 | { |
73051182 DE |
7496 | /* Switch to the next abbrev table if necessary. */ |
7497 | if (abbrev_table == NULL | |
b2bdb8cf | 7498 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 7499 | { |
b2bdb8cf | 7500 | abbrev_offset = tu.abbrev_offset; |
73051182 | 7501 | abbrev_table = |
86de1d91 TT |
7502 | abbrev_table::read (dwarf2_per_objfile->objfile, |
7503 | &dwarf2_per_objfile->abbrev, | |
7504 | abbrev_offset); | |
73051182 DE |
7505 | ++tu_stats->nr_uniq_abbrev_tables; |
7506 | } | |
7507 | ||
c0ab21c2 | 7508 | cutu_reader reader (&tu.sig_type->per_cu, abbrev_table.get (), |
6751ebae | 7509 | 0, false); |
c0ab21c2 TT |
7510 | if (!reader.dummy_p) |
7511 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7512 | reader.comp_unit_die); |
73051182 | 7513 | } |
6aa5f3a6 | 7514 | } |
73051182 | 7515 | |
6aa5f3a6 DE |
7516 | /* Print collected type unit statistics. */ |
7517 | ||
7518 | static void | |
ed2dc618 | 7519 | print_tu_stats (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
7520 | { |
7521 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
7522 | ||
7523 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf SM |
7524 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
7525 | dwarf2_per_objfile->all_type_units.size ()); | |
6aa5f3a6 DE |
7526 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
7527 | tu_stats->nr_uniq_abbrev_tables); | |
7528 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
7529 | tu_stats->nr_symtabs); | |
7530 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
7531 | tu_stats->nr_symtab_sharers); | |
7532 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
7533 | tu_stats->nr_stmt_less_type_units); | |
7534 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
7535 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
7536 | } |
7537 | ||
f4dc4d17 DE |
7538 | /* Traversal function for build_type_psymtabs. */ |
7539 | ||
7540 | static int | |
7541 | build_type_psymtab_dependencies (void **slot, void *info) | |
7542 | { | |
ed2dc618 SM |
7543 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7544 | = (struct dwarf2_per_objfile *) info; | |
f4dc4d17 DE |
7545 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7546 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 7547 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 7548 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 7549 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
7550 | int i; |
7551 | ||
7552 | gdb_assert (len > 0); | |
197400e8 | 7553 | gdb_assert (per_cu->type_unit_group_p ()); |
f4dc4d17 DE |
7554 | |
7555 | pst->number_of_dependencies = len; | |
a9342b62 | 7556 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 7557 | for (i = 0; i < len; ++i) |
f4dc4d17 | 7558 | { |
df07e2c7 | 7559 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
7560 | gdb_assert (iter->per_cu.is_debug_types); |
7561 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 7562 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
7563 | } |
7564 | ||
df07e2c7 AB |
7565 | delete tu_group->tus; |
7566 | tu_group->tus = nullptr; | |
348e048f DE |
7567 | |
7568 | return 1; | |
7569 | } | |
7570 | ||
7571 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7572 | Build partial symbol tables for the .debug_types comp-units. */ | |
7573 | ||
7574 | static void | |
ed2dc618 | 7575 | build_type_psymtabs (struct dwarf2_per_objfile *dwarf2_per_objfile) |
348e048f | 7576 | { |
ed2dc618 | 7577 | if (! create_all_type_units (dwarf2_per_objfile)) |
348e048f DE |
7578 | return; |
7579 | ||
ed2dc618 | 7580 | build_type_psymtabs_1 (dwarf2_per_objfile); |
6aa5f3a6 | 7581 | } |
f4dc4d17 | 7582 | |
6aa5f3a6 DE |
7583 | /* Traversal function for process_skeletonless_type_unit. |
7584 | Read a TU in a DWO file and build partial symbols for it. */ | |
7585 | ||
7586 | static int | |
7587 | process_skeletonless_type_unit (void **slot, void *info) | |
7588 | { | |
7589 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
ed2dc618 SM |
7590 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7591 | = (struct dwarf2_per_objfile *) info; | |
6aa5f3a6 DE |
7592 | struct signatured_type find_entry, *entry; |
7593 | ||
7594 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
7595 | ||
7596 | if (dwarf2_per_objfile->signatured_types == NULL) | |
298e9637 | 7597 | dwarf2_per_objfile->signatured_types = allocate_signatured_type_table (); |
6aa5f3a6 DE |
7598 | |
7599 | find_entry.signature = dwo_unit->signature; | |
b0b6a987 TT |
7600 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types.get (), |
7601 | &find_entry, INSERT); | |
6aa5f3a6 DE |
7602 | /* If we've already seen this type there's nothing to do. What's happening |
7603 | is we're doing our own version of comdat-folding here. */ | |
7604 | if (*slot != NULL) | |
7605 | return 1; | |
7606 | ||
7607 | /* This does the job that create_all_type_units would have done for | |
7608 | this TU. */ | |
ed2dc618 SM |
7609 | entry = add_type_unit (dwarf2_per_objfile, dwo_unit->signature, slot); |
7610 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
7611 | *slot = entry; |
7612 | ||
7613 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
6751ebae | 7614 | cutu_reader reader (&entry->per_cu, NULL, 0, false); |
c0ab21c2 TT |
7615 | if (!reader.dummy_p) |
7616 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7617 | reader.comp_unit_die); |
6aa5f3a6 DE |
7618 | |
7619 | return 1; | |
7620 | } | |
7621 | ||
7622 | /* Traversal function for process_skeletonless_type_units. */ | |
7623 | ||
7624 | static int | |
7625 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
7626 | { | |
7627 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
7628 | ||
7629 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
7630 | htab_traverse_noresize (dwo_file->tus.get (), |
7631 | process_skeletonless_type_unit, info); | |
6aa5f3a6 DE |
7632 | |
7633 | return 1; | |
7634 | } | |
7635 | ||
7636 | /* Scan all TUs of DWO files, verifying we've processed them. | |
7637 | This is needed in case a TU was emitted without its skeleton. | |
7638 | Note: This can't be done until we know what all the DWO files are. */ | |
7639 | ||
7640 | static void | |
ed2dc618 | 7641 | process_skeletonless_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
7642 | { |
7643 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
ed2dc618 | 7644 | if (get_dwp_file (dwarf2_per_objfile) == NULL |
6aa5f3a6 DE |
7645 | && dwarf2_per_objfile->dwo_files != NULL) |
7646 | { | |
51ac9db5 | 7647 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files.get (), |
6aa5f3a6 | 7648 | process_dwo_file_for_skeletonless_type_units, |
ed2dc618 | 7649 | dwarf2_per_objfile); |
6aa5f3a6 | 7650 | } |
348e048f DE |
7651 | } |
7652 | ||
ed2dc618 | 7653 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
7654 | |
7655 | static void | |
ed2dc618 | 7656 | set_partial_user (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 7657 | { |
b76e467d | 7658 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
95554aad | 7659 | { |
891813be | 7660 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 7661 | |
36586728 TT |
7662 | if (pst == NULL) |
7663 | continue; | |
7664 | ||
b76e467d | 7665 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
7666 | { |
7667 | /* Set the 'user' field only if it is not already set. */ | |
7668 | if (pst->dependencies[j]->user == NULL) | |
7669 | pst->dependencies[j]->user = pst; | |
7670 | } | |
7671 | } | |
7672 | } | |
7673 | ||
93311388 DE |
7674 | /* Build the partial symbol table by doing a quick pass through the |
7675 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 7676 | |
93311388 | 7677 | static void |
ed2dc618 | 7678 | dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile *dwarf2_per_objfile) |
93311388 | 7679 | { |
ed2dc618 | 7680 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
93311388 | 7681 | |
b4f54984 | 7682 | if (dwarf_read_debug) |
45cfd468 DE |
7683 | { |
7684 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 7685 | objfile_name (objfile)); |
45cfd468 DE |
7686 | } |
7687 | ||
76935768 TT |
7688 | scoped_restore restore_reading_psyms |
7689 | = make_scoped_restore (&dwarf2_per_objfile->reading_partial_symbols, | |
7690 | true); | |
98bfdba5 | 7691 | |
96b79293 | 7692 | dwarf2_per_objfile->info.read (objfile); |
91c24f0a | 7693 | |
93311388 DE |
7694 | /* Any cached compilation units will be linked by the per-objfile |
7695 | read_in_chain. Make sure to free them when we're done. */ | |
11ed8cad | 7696 | free_cached_comp_units freer (dwarf2_per_objfile); |
72bf9492 | 7697 | |
ed2dc618 | 7698 | build_type_psymtabs (dwarf2_per_objfile); |
348e048f | 7699 | |
ed2dc618 | 7700 | create_all_comp_units (dwarf2_per_objfile); |
c906108c | 7701 | |
60606b2c TT |
7702 | /* Create a temporary address map on a temporary obstack. We later |
7703 | copy this to the final obstack. */ | |
8268c778 | 7704 | auto_obstack temp_obstack; |
791afaa2 TT |
7705 | |
7706 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 7707 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 7708 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 7709 | |
b76e467d | 7710 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
135f5437 | 7711 | process_psymtab_comp_unit (per_cu, false, language_minimal); |
ff013f42 | 7712 | |
6aa5f3a6 | 7713 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
ed2dc618 | 7714 | process_skeletonless_type_units (dwarf2_per_objfile); |
6aa5f3a6 DE |
7715 | |
7716 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
7717 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
7718 | { | |
eaa5fa8b | 7719 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups.get (), |
ed2dc618 | 7720 | build_type_psymtab_dependencies, dwarf2_per_objfile); |
6aa5f3a6 DE |
7721 | } |
7722 | ||
b4f54984 | 7723 | if (dwarf_read_debug) |
ed2dc618 | 7724 | print_tu_stats (dwarf2_per_objfile); |
6aa5f3a6 | 7725 | |
ed2dc618 | 7726 | set_partial_user (dwarf2_per_objfile); |
95554aad | 7727 | |
d320c2b5 TT |
7728 | objfile->partial_symtabs->psymtabs_addrmap |
7729 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 7730 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
7731 | /* At this point we want to keep the address map. */ |
7732 | save_psymtabs_addrmap.release (); | |
ff013f42 | 7733 | |
b4f54984 | 7734 | if (dwarf_read_debug) |
45cfd468 | 7735 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 7736 | objfile_name (objfile)); |
ae038cb0 DJ |
7737 | } |
7738 | ||
dee91e82 DE |
7739 | /* Load the partial DIEs for a secondary CU into memory. |
7740 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 7741 | |
dee91e82 DE |
7742 | static void |
7743 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
7744 | { | |
6751ebae | 7745 | cutu_reader reader (this_cu, NULL, 1, false); |
c0ab21c2 TT |
7746 | |
7747 | if (!reader.dummy_p) | |
7748 | { | |
7749 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
7750 | language_minimal); | |
7751 | ||
7752 | /* Check if comp unit has_children. | |
7753 | If so, read the rest of the partial symbols from this comp unit. | |
7754 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7755 | if (reader.comp_unit_die->has_children) |
c0ab21c2 | 7756 | load_partial_dies (&reader, reader.info_ptr, 0); |
6751ebae TT |
7757 | |
7758 | reader.keep (); | |
c0ab21c2 | 7759 | } |
ae038cb0 DJ |
7760 | } |
7761 | ||
ae038cb0 | 7762 | static void |
ed2dc618 | 7763 | read_comp_units_from_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
36586728 | 7764 | struct dwarf2_section_info *section, |
f1902523 | 7765 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 7766 | unsigned int is_dwz) |
ae038cb0 | 7767 | { |
d521ce57 | 7768 | const gdb_byte *info_ptr; |
ed2dc618 | 7769 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
be391dca | 7770 | |
b4f54984 | 7771 | if (dwarf_read_debug) |
bf6af496 | 7772 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
96b79293 TT |
7773 | section->get_name (), |
7774 | section->get_file_name ()); | |
bf6af496 | 7775 | |
96b79293 | 7776 | section->read (objfile); |
ae038cb0 | 7777 | |
36586728 | 7778 | info_ptr = section->buffer; |
6e70227d | 7779 | |
36586728 | 7780 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 7781 | { |
ae038cb0 | 7782 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 7783 | |
9c541725 | 7784 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 7785 | |
f1902523 | 7786 | comp_unit_head cu_header; |
ed2dc618 SM |
7787 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
7788 | abbrev_section, info_ptr, | |
7789 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
7790 | |
7791 | /* Save the compilation unit for later lookup. */ | |
f1902523 JK |
7792 | if (cu_header.unit_type != DW_UT_type) |
7793 | { | |
7794 | this_cu = XOBNEW (&objfile->objfile_obstack, | |
7795 | struct dwarf2_per_cu_data); | |
7796 | memset (this_cu, 0, sizeof (*this_cu)); | |
7797 | } | |
7798 | else | |
7799 | { | |
7800 | auto sig_type = XOBNEW (&objfile->objfile_obstack, | |
7801 | struct signatured_type); | |
7802 | memset (sig_type, 0, sizeof (*sig_type)); | |
7803 | sig_type->signature = cu_header.signature; | |
7804 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
7805 | this_cu = &sig_type->per_cu; | |
7806 | } | |
7807 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 7808 | this_cu->sect_off = sect_off; |
f1902523 | 7809 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 7810 | this_cu->is_dwz = is_dwz; |
e3b94546 | 7811 | this_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
8a0459fd | 7812 | this_cu->section = section; |
ae038cb0 | 7813 | |
b76e467d | 7814 | dwarf2_per_objfile->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
7815 | |
7816 | info_ptr = info_ptr + this_cu->length; | |
7817 | } | |
36586728 TT |
7818 | } |
7819 | ||
7820 | /* Create a list of all compilation units in OBJFILE. | |
7821 | This is only done for -readnow and building partial symtabs. */ | |
7822 | ||
7823 | static void | |
ed2dc618 | 7824 | create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 7825 | { |
b76e467d | 7826 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
ed2dc618 | 7827 | read_comp_units_from_section (dwarf2_per_objfile, &dwarf2_per_objfile->info, |
b76e467d | 7828 | &dwarf2_per_objfile->abbrev, 0); |
36586728 | 7829 | |
b76e467d | 7830 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 7831 | if (dwz != NULL) |
ed2dc618 | 7832 | read_comp_units_from_section (dwarf2_per_objfile, &dwz->info, &dwz->abbrev, |
b76e467d | 7833 | 1); |
c906108c SS |
7834 | } |
7835 | ||
5734ee8b | 7836 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 7837 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 7838 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
7839 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
7840 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 7841 | |
72bf9492 DJ |
7842 | static void |
7843 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
7844 | CORE_ADDR *highpc, int set_addrmap, |
7845 | struct dwarf2_cu *cu) | |
c906108c | 7846 | { |
72bf9492 | 7847 | struct partial_die_info *pdi; |
c906108c | 7848 | |
91c24f0a DC |
7849 | /* Now, march along the PDI's, descending into ones which have |
7850 | interesting children but skipping the children of the other ones, | |
7851 | until we reach the end of the compilation unit. */ | |
c906108c | 7852 | |
72bf9492 | 7853 | pdi = first_die; |
91c24f0a | 7854 | |
72bf9492 DJ |
7855 | while (pdi != NULL) |
7856 | { | |
52356b79 | 7857 | pdi->fixup (cu); |
c906108c | 7858 | |
f55ee35c | 7859 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
7860 | children, so we need to look at them. Ditto for anonymous |
7861 | enums. */ | |
933c6fe4 | 7862 | |
72bf9492 | 7863 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 7864 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
7865 | || pdi->tag == DW_TAG_imported_unit |
7866 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 7867 | { |
72bf9492 | 7868 | switch (pdi->tag) |
c906108c SS |
7869 | { |
7870 | case DW_TAG_subprogram: | |
b1dc1806 | 7871 | case DW_TAG_inlined_subroutine: |
cdc07690 | 7872 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 7873 | break; |
72929c62 | 7874 | case DW_TAG_constant: |
c906108c SS |
7875 | case DW_TAG_variable: |
7876 | case DW_TAG_typedef: | |
91c24f0a | 7877 | case DW_TAG_union_type: |
72bf9492 | 7878 | if (!pdi->is_declaration) |
63d06c5c | 7879 | { |
72bf9492 | 7880 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
7881 | } |
7882 | break; | |
c906108c | 7883 | case DW_TAG_class_type: |
680b30c7 | 7884 | case DW_TAG_interface_type: |
c906108c | 7885 | case DW_TAG_structure_type: |
72bf9492 | 7886 | if (!pdi->is_declaration) |
c906108c | 7887 | { |
72bf9492 | 7888 | add_partial_symbol (pdi, cu); |
c906108c | 7889 | } |
b7fee5a3 KS |
7890 | if ((cu->language == language_rust |
7891 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
7892 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
7893 | set_addrmap, cu); | |
c906108c | 7894 | break; |
91c24f0a | 7895 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
7896 | if (!pdi->is_declaration) |
7897 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
7898 | break; |
7899 | case DW_TAG_base_type: | |
a02abb62 | 7900 | case DW_TAG_subrange_type: |
c906108c | 7901 | /* File scope base type definitions are added to the partial |
c5aa993b | 7902 | symbol table. */ |
72bf9492 | 7903 | add_partial_symbol (pdi, cu); |
c906108c | 7904 | break; |
d9fa45fe | 7905 | case DW_TAG_namespace: |
cdc07690 | 7906 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 7907 | break; |
5d7cb8df | 7908 | case DW_TAG_module: |
59c35742 AB |
7909 | if (!pdi->is_declaration) |
7910 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 7911 | break; |
95554aad TT |
7912 | case DW_TAG_imported_unit: |
7913 | { | |
7914 | struct dwarf2_per_cu_data *per_cu; | |
7915 | ||
f4dc4d17 DE |
7916 | /* For now we don't handle imported units in type units. */ |
7917 | if (cu->per_cu->is_debug_types) | |
7918 | { | |
7919 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
7920 | " supported in type units [in module %s]"), | |
518817b3 | 7921 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
7922 | } |
7923 | ||
e3b94546 SM |
7924 | per_cu = dwarf2_find_containing_comp_unit |
7925 | (pdi->d.sect_off, pdi->is_dwz, | |
518817b3 | 7926 | cu->per_cu->dwarf2_per_objfile); |
95554aad TT |
7927 | |
7928 | /* Go read the partial unit, if needed. */ | |
7929 | if (per_cu->v.psymtab == NULL) | |
135f5437 | 7930 | process_psymtab_comp_unit (per_cu, true, cu->language); |
95554aad | 7931 | |
ae640021 | 7932 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
7933 | } |
7934 | break; | |
74921315 KS |
7935 | case DW_TAG_imported_declaration: |
7936 | add_partial_symbol (pdi, cu); | |
7937 | break; | |
c906108c SS |
7938 | default: |
7939 | break; | |
7940 | } | |
7941 | } | |
7942 | ||
72bf9492 DJ |
7943 | /* If the die has a sibling, skip to the sibling. */ |
7944 | ||
7945 | pdi = pdi->die_sibling; | |
7946 | } | |
7947 | } | |
7948 | ||
7949 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 7950 | |
72bf9492 | 7951 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 7952 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
7953 | Enumerators are an exception; they use the scope of their parent |
7954 | enumeration type, i.e. the name of the enumeration type is not | |
7955 | prepended to the enumerator. | |
91c24f0a | 7956 | |
72bf9492 DJ |
7957 | There are two complexities. One is DW_AT_specification; in this |
7958 | case "parent" means the parent of the target of the specification, | |
7959 | instead of the direct parent of the DIE. The other is compilers | |
7960 | which do not emit DW_TAG_namespace; in this case we try to guess | |
7961 | the fully qualified name of structure types from their members' | |
7962 | linkage names. This must be done using the DIE's children rather | |
7963 | than the children of any DW_AT_specification target. We only need | |
7964 | to do this for structures at the top level, i.e. if the target of | |
7965 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
7966 | have a parent. */ | |
7967 | ||
7968 | /* Compute the scope prefix associated with PDI's parent, in | |
7969 | compilation unit CU. The result will be allocated on CU's | |
7970 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
7971 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 7972 | static const char * |
72bf9492 DJ |
7973 | partial_die_parent_scope (struct partial_die_info *pdi, |
7974 | struct dwarf2_cu *cu) | |
7975 | { | |
15d034d0 | 7976 | const char *grandparent_scope; |
72bf9492 | 7977 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 7978 | |
72bf9492 DJ |
7979 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
7980 | then this means the parent of the specification DIE. */ | |
7981 | ||
7982 | real_pdi = pdi; | |
72bf9492 | 7983 | while (real_pdi->has_specification) |
fb816e8b | 7984 | { |
122cf0f2 AB |
7985 | auto res = find_partial_die (real_pdi->spec_offset, |
7986 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
7987 | real_pdi = res.pdi; |
7988 | cu = res.cu; | |
7989 | } | |
72bf9492 DJ |
7990 | |
7991 | parent = real_pdi->die_parent; | |
7992 | if (parent == NULL) | |
7993 | return NULL; | |
7994 | ||
7995 | if (parent->scope_set) | |
7996 | return parent->scope; | |
7997 | ||
52356b79 | 7998 | parent->fixup (cu); |
72bf9492 | 7999 | |
10b3939b | 8000 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8001 | |
acebe513 UW |
8002 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8003 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8004 | Work around this problem here. */ | |
8005 | if (cu->language == language_cplus | |
6e70227d | 8006 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
8007 | && strcmp (parent->name, "::") == 0 |
8008 | && grandparent_scope == NULL) | |
8009 | { | |
8010 | parent->scope = NULL; | |
8011 | parent->scope_set = 1; | |
8012 | return NULL; | |
8013 | } | |
8014 | ||
0a4b0913 | 8015 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
8016 | if (pdi->tag == DW_TAG_enumerator) |
8017 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8018 | parent->scope = grandparent_scope; | |
8019 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8020 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8021 | || parent->tag == DW_TAG_structure_type |
8022 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8023 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 8024 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
8025 | || parent->tag == DW_TAG_enumeration_type |
8026 | || (cu->language == language_fortran | |
8027 | && parent->tag == DW_TAG_subprogram | |
8028 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8029 | { |
8030 | if (grandparent_scope == NULL) | |
8031 | parent->scope = parent->name; | |
8032 | else | |
3e43a32a MS |
8033 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8034 | grandparent_scope, | |
f55ee35c | 8035 | parent->name, 0, cu); |
72bf9492 | 8036 | } |
72bf9492 DJ |
8037 | else |
8038 | { | |
8039 | /* FIXME drow/2004-04-01: What should we be doing with | |
8040 | function-local names? For partial symbols, we should probably be | |
8041 | ignoring them. */ | |
fa9c3fa0 TT |
8042 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8043 | dwarf_tag_name (parent->tag), | |
8044 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8045 | parent->scope = grandparent_scope; |
c906108c SS |
8046 | } |
8047 | ||
72bf9492 DJ |
8048 | parent->scope_set = 1; |
8049 | return parent->scope; | |
8050 | } | |
8051 | ||
8052 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8053 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8054 | |
43816ebc | 8055 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8056 | partial_die_full_name (struct partial_die_info *pdi, |
8057 | struct dwarf2_cu *cu) | |
8058 | { | |
15d034d0 | 8059 | const char *parent_scope; |
72bf9492 | 8060 | |
98bfdba5 PA |
8061 | /* If this is a template instantiation, we can not work out the |
8062 | template arguments from partial DIEs. So, unfortunately, we have | |
8063 | to go through the full DIEs. At least any work we do building | |
8064 | types here will be reused if full symbols are loaded later. */ | |
8065 | if (pdi->has_template_arguments) | |
8066 | { | |
52356b79 | 8067 | pdi->fixup (cu); |
98bfdba5 PA |
8068 | |
8069 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
8070 | { | |
8071 | struct die_info *die; | |
8072 | struct attribute attr; | |
8073 | struct dwarf2_cu *ref_cu = cu; | |
8074 | ||
b64f50a1 | 8075 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8076 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8077 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8078 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8079 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8080 | ||
43816ebc | 8081 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8082 | } |
8083 | } | |
8084 | ||
72bf9492 DJ |
8085 | parent_scope = partial_die_parent_scope (pdi, cu); |
8086 | if (parent_scope == NULL) | |
8087 | return NULL; | |
8088 | else | |
43816ebc TT |
8089 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
8090 | pdi->name, 0, cu)); | |
c906108c SS |
8091 | } |
8092 | ||
8093 | static void | |
72bf9492 | 8094 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8095 | { |
518817b3 SM |
8096 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8097 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 8098 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 8099 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 8100 | CORE_ADDR addr = 0; |
15d034d0 | 8101 | const char *actual_name = NULL; |
e142c38c DJ |
8102 | CORE_ADDR baseaddr; |
8103 | ||
b3b3bada | 8104 | baseaddr = objfile->text_section_offset (); |
c906108c | 8105 | |
43816ebc TT |
8106 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8107 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8108 | if (built_actual_name != NULL) |
43816ebc | 8109 | actual_name = built_actual_name.get (); |
63d06c5c | 8110 | |
72bf9492 DJ |
8111 | if (actual_name == NULL) |
8112 | actual_name = pdi->name; | |
8113 | ||
c906108c SS |
8114 | switch (pdi->tag) |
8115 | { | |
b1dc1806 | 8116 | case DW_TAG_inlined_subroutine: |
c906108c | 8117 | case DW_TAG_subprogram: |
79748972 TT |
8118 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8119 | - baseaddr); | |
0a4b0913 AB |
8120 | if (pdi->is_external |
8121 | || cu->language == language_ada | |
8122 | || (cu->language == language_fortran | |
8123 | && pdi->die_parent != NULL | |
8124 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8125 | { | |
8126 | /* Normally, only "external" DIEs are part of the global scope. | |
8127 | But in Ada and Fortran, we want to be able to access nested | |
8128 | procedures globally. So all Ada and Fortran subprograms are | |
8129 | stored in the global scope. */ | |
31edb802 | 8130 | add_psymbol_to_list (actual_name, |
15d034d0 | 8131 | built_actual_name != NULL, |
f47fb265 | 8132 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8133 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8134 | psymbol_placement::GLOBAL, |
79748972 TT |
8135 | addr, |
8136 | cu->language, objfile); | |
c906108c SS |
8137 | } |
8138 | else | |
8139 | { | |
31edb802 | 8140 | add_psymbol_to_list (actual_name, |
15d034d0 | 8141 | built_actual_name != NULL, |
f47fb265 | 8142 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8143 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8144 | psymbol_placement::STATIC, |
1762568f | 8145 | addr, cu->language, objfile); |
c906108c | 8146 | } |
0c1b455e TT |
8147 | |
8148 | if (pdi->main_subprogram && actual_name != NULL) | |
8149 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8150 | break; |
72929c62 | 8151 | case DW_TAG_constant: |
31edb802 | 8152 | add_psymbol_to_list (actual_name, |
75aedd27 TT |
8153 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
8154 | -1, (pdi->is_external | |
8155 | ? psymbol_placement::GLOBAL | |
8156 | : psymbol_placement::STATIC), | |
8157 | 0, cu->language, objfile); | |
72929c62 | 8158 | break; |
c906108c | 8159 | case DW_TAG_variable: |
95554aad TT |
8160 | if (pdi->d.locdesc) |
8161 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8162 | |
95554aad | 8163 | if (pdi->d.locdesc |
caac4577 JG |
8164 | && addr == 0 |
8165 | && !dwarf2_per_objfile->has_section_at_zero) | |
8166 | { | |
8167 | /* A global or static variable may also have been stripped | |
8168 | out by the linker if unused, in which case its address | |
8169 | will be nullified; do not add such variables into partial | |
8170 | symbol table then. */ | |
8171 | } | |
8172 | else if (pdi->is_external) | |
c906108c SS |
8173 | { |
8174 | /* Global Variable. | |
8175 | Don't enter into the minimal symbol tables as there is | |
8176 | a minimal symbol table entry from the ELF symbols already. | |
8177 | Enter into partial symbol table if it has a location | |
8178 | descriptor or a type. | |
8179 | If the location descriptor is missing, new_symbol will create | |
8180 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8181 | be determined from the minimal symbol table whenever the variable | |
8182 | is referenced. | |
8183 | The address for the partial symbol table entry is not | |
8184 | used by GDB, but it comes in handy for debugging partial symbol | |
8185 | table building. */ | |
8186 | ||
95554aad | 8187 | if (pdi->d.locdesc || pdi->has_type) |
31edb802 | 8188 | add_psymbol_to_list (actual_name, |
15d034d0 | 8189 | built_actual_name != NULL, |
f47fb265 | 8190 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 8191 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8192 | psymbol_placement::GLOBAL, |
79748972 | 8193 | addr, cu->language, objfile); |
c906108c SS |
8194 | } |
8195 | else | |
8196 | { | |
ff908ebf AW |
8197 | int has_loc = pdi->d.locdesc != NULL; |
8198 | ||
8199 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8200 | without location descriptors or constant values). */ | |
8201 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8202 | return; |
ff908ebf | 8203 | |
31edb802 | 8204 | add_psymbol_to_list (actual_name, |
15d034d0 | 8205 | built_actual_name != NULL, |
f47fb265 | 8206 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 8207 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8208 | psymbol_placement::STATIC, |
79748972 | 8209 | has_loc ? addr : 0, |
f47fb265 | 8210 | cu->language, objfile); |
c906108c SS |
8211 | } |
8212 | break; | |
8213 | case DW_TAG_typedef: | |
8214 | case DW_TAG_base_type: | |
a02abb62 | 8215 | case DW_TAG_subrange_type: |
31edb802 | 8216 | add_psymbol_to_list (actual_name, |
15d034d0 | 8217 | built_actual_name != NULL, |
79748972 | 8218 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 8219 | psymbol_placement::STATIC, |
1762568f | 8220 | 0, cu->language, objfile); |
c906108c | 8221 | break; |
74921315 | 8222 | case DW_TAG_imported_declaration: |
72bf9492 | 8223 | case DW_TAG_namespace: |
31edb802 | 8224 | add_psymbol_to_list (actual_name, |
15d034d0 | 8225 | built_actual_name != NULL, |
79748972 | 8226 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 8227 | psymbol_placement::GLOBAL, |
1762568f | 8228 | 0, cu->language, objfile); |
72bf9492 | 8229 | break; |
530e8392 | 8230 | case DW_TAG_module: |
a5fd13a9 BH |
8231 | /* With Fortran 77 there might be a "BLOCK DATA" module |
8232 | available without any name. If so, we skip the module as it | |
8233 | doesn't bring any value. */ | |
8234 | if (actual_name != nullptr) | |
31edb802 | 8235 | add_psymbol_to_list (actual_name, |
a5fd13a9 BH |
8236 | built_actual_name != NULL, |
8237 | MODULE_DOMAIN, LOC_TYPEDEF, -1, | |
8238 | psymbol_placement::GLOBAL, | |
8239 | 0, cu->language, objfile); | |
530e8392 | 8240 | break; |
c906108c | 8241 | case DW_TAG_class_type: |
680b30c7 | 8242 | case DW_TAG_interface_type: |
c906108c SS |
8243 | case DW_TAG_structure_type: |
8244 | case DW_TAG_union_type: | |
8245 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
8246 | /* Skip external references. The DWARF standard says in the section |
8247 | about "Structure, Union, and Class Type Entries": "An incomplete | |
8248 | structure, union or class type is represented by a structure, | |
8249 | union or class entry that does not have a byte size attribute | |
8250 | and that has a DW_AT_declaration attribute." */ | |
8251 | if (!pdi->has_byte_size && pdi->is_declaration) | |
43816ebc | 8252 | return; |
fa4028e9 | 8253 | |
63d06c5c DC |
8254 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8255 | static vs. global. */ | |
31edb802 | 8256 | add_psymbol_to_list (actual_name, |
15d034d0 | 8257 | built_actual_name != NULL, |
79748972 | 8258 | STRUCT_DOMAIN, LOC_TYPEDEF, -1, |
9c37b5ae | 8259 | cu->language == language_cplus |
75aedd27 TT |
8260 | ? psymbol_placement::GLOBAL |
8261 | : psymbol_placement::STATIC, | |
1762568f | 8262 | 0, cu->language, objfile); |
c906108c | 8263 | |
c906108c SS |
8264 | break; |
8265 | case DW_TAG_enumerator: | |
31edb802 | 8266 | add_psymbol_to_list (actual_name, |
15d034d0 | 8267 | built_actual_name != NULL, |
79748972 | 8268 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 8269 | cu->language == language_cplus |
75aedd27 TT |
8270 | ? psymbol_placement::GLOBAL |
8271 | : psymbol_placement::STATIC, | |
1762568f | 8272 | 0, cu->language, objfile); |
c906108c SS |
8273 | break; |
8274 | default: | |
8275 | break; | |
8276 | } | |
8277 | } | |
8278 | ||
5c4e30ca DC |
8279 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8280 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8281 | the name of the enclosing namespace. */ | |
91c24f0a | 8282 | |
72bf9492 DJ |
8283 | static void |
8284 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8285 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8286 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8287 | { |
72bf9492 | 8288 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8289 | |
72bf9492 | 8290 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8291 | |
8292 | /* Now scan partial symbols in that namespace. */ | |
8293 | ||
91c24f0a | 8294 | if (pdi->has_children) |
cdc07690 | 8295 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8296 | } |
8297 | ||
5d7cb8df JK |
8298 | /* Read a partial die corresponding to a Fortran module. */ |
8299 | ||
8300 | static void | |
8301 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8302 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8303 | { |
530e8392 KB |
8304 | /* Add a symbol for the namespace. */ |
8305 | ||
8306 | add_partial_symbol (pdi, cu); | |
8307 | ||
f55ee35c | 8308 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8309 | |
8310 | if (pdi->has_children) | |
cdc07690 | 8311 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8312 | } |
8313 | ||
b1dc1806 XR |
8314 | /* Read a partial die corresponding to a subprogram or an inlined |
8315 | subprogram and create a partial symbol for that subprogram. | |
8316 | When the CU language allows it, this routine also defines a partial | |
8317 | symbol for each nested subprogram that this subprogram contains. | |
8318 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8319 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8320 | |
cdc07690 YQ |
8321 | PDI may also be a lexical block, in which case we simply search |
8322 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8323 | Again, this is only performed when the CU language allows this |
8324 | type of definitions. */ | |
8325 | ||
8326 | static void | |
8327 | add_partial_subprogram (struct partial_die_info *pdi, | |
8328 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8329 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8330 | { |
b1dc1806 | 8331 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8332 | { |
8333 | if (pdi->has_pc_info) | |
8334 | { | |
8335 | if (pdi->lowpc < *lowpc) | |
8336 | *lowpc = pdi->lowpc; | |
8337 | if (pdi->highpc > *highpc) | |
8338 | *highpc = pdi->highpc; | |
cdc07690 | 8339 | if (set_addrmap) |
5734ee8b | 8340 | { |
518817b3 | 8341 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a MR |
8342 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
8343 | CORE_ADDR baseaddr; | |
b926417a TT |
8344 | CORE_ADDR this_highpc; |
8345 | CORE_ADDR this_lowpc; | |
5734ee8b | 8346 | |
b3b3bada | 8347 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8348 | this_lowpc |
8349 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8350 | pdi->lowpc + baseaddr) | |
8351 | - baseaddr); | |
8352 | this_highpc | |
8353 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8354 | pdi->highpc + baseaddr) | |
8355 | - baseaddr); | |
d320c2b5 | 8356 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 8357 | this_lowpc, this_highpc - 1, |
9291a0cd | 8358 | cu->per_cu->v.psymtab); |
5734ee8b | 8359 | } |
481860b3 GB |
8360 | } |
8361 | ||
8362 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8363 | { | |
bc30ff58 | 8364 | if (!pdi->is_declaration) |
e8d05480 JB |
8365 | /* Ignore subprogram DIEs that do not have a name, they are |
8366 | illegal. Do not emit a complaint at this point, we will | |
8367 | do so when we convert this psymtab into a symtab. */ | |
8368 | if (pdi->name) | |
8369 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
8370 | } |
8371 | } | |
6e70227d | 8372 | |
bc30ff58 JB |
8373 | if (! pdi->has_children) |
8374 | return; | |
8375 | ||
0a4b0913 | 8376 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8377 | { |
8378 | pdi = pdi->die_child; | |
8379 | while (pdi != NULL) | |
8380 | { | |
52356b79 | 8381 | pdi->fixup (cu); |
bc30ff58 | 8382 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8383 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8384 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8385 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8386 | pdi = pdi->die_sibling; |
8387 | } | |
8388 | } | |
8389 | } | |
8390 | ||
91c24f0a DC |
8391 | /* Read a partial die corresponding to an enumeration type. */ |
8392 | ||
72bf9492 DJ |
8393 | static void |
8394 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8395 | struct dwarf2_cu *cu) | |
91c24f0a | 8396 | { |
72bf9492 | 8397 | struct partial_die_info *pdi; |
91c24f0a DC |
8398 | |
8399 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
8400 | add_partial_symbol (enum_pdi, cu); |
8401 | ||
8402 | pdi = enum_pdi->die_child; | |
8403 | while (pdi) | |
91c24f0a | 8404 | { |
72bf9492 | 8405 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
b98664d3 | 8406 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8407 | else |
72bf9492 DJ |
8408 | add_partial_symbol (pdi, cu); |
8409 | pdi = pdi->die_sibling; | |
91c24f0a | 8410 | } |
91c24f0a DC |
8411 | } |
8412 | ||
6caca83c CC |
8413 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8414 | ||
8415 | static unsigned int | |
d521ce57 | 8416 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8417 | { |
8418 | unsigned int bytes_read; | |
8419 | ||
8420 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8421 | } | |
8422 | ||
685af9cd TT |
8423 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8424 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8425 | ||
4bb7a0a7 DJ |
8426 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8427 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8428 | the initial number. */ | |
8429 | ||
8430 | static struct abbrev_info * | |
685af9cd TT |
8431 | peek_die_abbrev (const die_reader_specs &reader, |
8432 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8433 | { |
685af9cd | 8434 | dwarf2_cu *cu = reader.cu; |
518817b3 | 8435 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
685af9cd TT |
8436 | unsigned int abbrev_number |
8437 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8438 | |
8439 | if (abbrev_number == 0) | |
8440 | return NULL; | |
8441 | ||
685af9cd | 8442 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
8443 | if (!abbrev) |
8444 | { | |
422b9917 | 8445 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8446 | " at offset %s [in module %s]"), |
422b9917 | 8447 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8448 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8449 | } |
8450 | ||
8451 | return abbrev; | |
8452 | } | |
8453 | ||
93311388 DE |
8454 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8455 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8456 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8457 | ||
d521ce57 TT |
8458 | static const gdb_byte * |
8459 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8460 | { |
4bb7a0a7 DJ |
8461 | while (1) |
8462 | { | |
685af9cd TT |
8463 | unsigned int bytes_read; |
8464 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
8465 | ||
4bb7a0a7 DJ |
8466 | if (abbrev == NULL) |
8467 | return info_ptr + bytes_read; | |
8468 | else | |
dee91e82 | 8469 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8470 | } |
8471 | } | |
8472 | ||
93311388 DE |
8473 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8474 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8475 | abbrev corresponding to that skipped uleb128 should be passed in |
8476 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8477 | children. */ | |
8478 | ||
d521ce57 TT |
8479 | static const gdb_byte * |
8480 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 8481 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8482 | { |
8483 | unsigned int bytes_read; | |
8484 | struct attribute attr; | |
dee91e82 DE |
8485 | bfd *abfd = reader->abfd; |
8486 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8487 | const gdb_byte *buffer = reader->buffer; |
f664829e | 8488 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
8489 | unsigned int form, i; |
8490 | ||
8491 | for (i = 0; i < abbrev->num_attrs; i++) | |
8492 | { | |
8493 | /* The only abbrev we care about is DW_AT_sibling. */ | |
8494 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
8495 | { | |
18a8505e AT |
8496 | bool ignored; |
8497 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr, | |
8498 | &ignored); | |
4bb7a0a7 | 8499 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 8500 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 8501 | else |
b9502d3f | 8502 | { |
0826b30a | 8503 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 8504 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
8505 | |
8506 | if (sibling_ptr < info_ptr) | |
b98664d3 | 8507 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 8508 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 8509 | reader->die_section->overflow_complaint (); |
b9502d3f WN |
8510 | else |
8511 | return sibling_ptr; | |
8512 | } | |
4bb7a0a7 DJ |
8513 | } |
8514 | ||
8515 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
8516 | form = abbrev->attrs[i].form; | |
8517 | skip_attribute: | |
8518 | switch (form) | |
8519 | { | |
4bb7a0a7 | 8520 | case DW_FORM_ref_addr: |
ae411497 TT |
8521 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
8522 | and later it is offset sized. */ | |
8523 | if (cu->header.version == 2) | |
8524 | info_ptr += cu->header.addr_size; | |
8525 | else | |
8526 | info_ptr += cu->header.offset_size; | |
8527 | break; | |
36586728 TT |
8528 | case DW_FORM_GNU_ref_alt: |
8529 | info_ptr += cu->header.offset_size; | |
8530 | break; | |
ae411497 | 8531 | case DW_FORM_addr: |
4bb7a0a7 DJ |
8532 | info_ptr += cu->header.addr_size; |
8533 | break; | |
8534 | case DW_FORM_data1: | |
8535 | case DW_FORM_ref1: | |
8536 | case DW_FORM_flag: | |
8fe0f950 | 8537 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
8538 | info_ptr += 1; |
8539 | break; | |
2dc7f7b3 | 8540 | case DW_FORM_flag_present: |
43988095 | 8541 | case DW_FORM_implicit_const: |
2dc7f7b3 | 8542 | break; |
4bb7a0a7 DJ |
8543 | case DW_FORM_data2: |
8544 | case DW_FORM_ref2: | |
8fe0f950 | 8545 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
8546 | info_ptr += 2; |
8547 | break; | |
8fe0f950 AT |
8548 | case DW_FORM_strx3: |
8549 | info_ptr += 3; | |
8550 | break; | |
4bb7a0a7 DJ |
8551 | case DW_FORM_data4: |
8552 | case DW_FORM_ref4: | |
8fe0f950 | 8553 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
8554 | info_ptr += 4; |
8555 | break; | |
8556 | case DW_FORM_data8: | |
8557 | case DW_FORM_ref8: | |
55f1336d | 8558 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
8559 | info_ptr += 8; |
8560 | break; | |
0224619f JK |
8561 | case DW_FORM_data16: |
8562 | info_ptr += 16; | |
8563 | break; | |
4bb7a0a7 | 8564 | case DW_FORM_string: |
9b1c24c8 | 8565 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
8566 | info_ptr += bytes_read; |
8567 | break; | |
2dc7f7b3 | 8568 | case DW_FORM_sec_offset: |
4bb7a0a7 | 8569 | case DW_FORM_strp: |
36586728 | 8570 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
8571 | info_ptr += cu->header.offset_size; |
8572 | break; | |
2dc7f7b3 | 8573 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
8574 | case DW_FORM_block: |
8575 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8576 | info_ptr += bytes_read; | |
8577 | break; | |
8578 | case DW_FORM_block1: | |
8579 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
8580 | break; | |
8581 | case DW_FORM_block2: | |
8582 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
8583 | break; | |
8584 | case DW_FORM_block4: | |
8585 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
8586 | break; | |
336d760d | 8587 | case DW_FORM_addrx: |
cf532bd1 | 8588 | case DW_FORM_strx: |
4bb7a0a7 DJ |
8589 | case DW_FORM_sdata: |
8590 | case DW_FORM_udata: | |
8591 | case DW_FORM_ref_udata: | |
3019eac3 DE |
8592 | case DW_FORM_GNU_addr_index: |
8593 | case DW_FORM_GNU_str_index: | |
18a8505e | 8594 | case DW_FORM_rnglistx: |
d521ce57 | 8595 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
8596 | break; |
8597 | case DW_FORM_indirect: | |
8598 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8599 | info_ptr += bytes_read; | |
8600 | /* We need to continue parsing from here, so just go back to | |
8601 | the top. */ | |
8602 | goto skip_attribute; | |
8603 | ||
8604 | default: | |
3e43a32a MS |
8605 | error (_("Dwarf Error: Cannot handle %s " |
8606 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
8607 | dwarf_form_name (form), |
8608 | bfd_get_filename (abfd)); | |
8609 | } | |
8610 | } | |
8611 | ||
8612 | if (abbrev->has_children) | |
dee91e82 | 8613 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
8614 | else |
8615 | return info_ptr; | |
8616 | } | |
8617 | ||
93311388 | 8618 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 8619 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 8620 | |
d521ce57 | 8621 | static const gdb_byte * |
dee91e82 DE |
8622 | locate_pdi_sibling (const struct die_reader_specs *reader, |
8623 | struct partial_die_info *orig_pdi, | |
d521ce57 | 8624 | const gdb_byte *info_ptr) |
91c24f0a DC |
8625 | { |
8626 | /* Do we know the sibling already? */ | |
72bf9492 | 8627 | |
91c24f0a DC |
8628 | if (orig_pdi->sibling) |
8629 | return orig_pdi->sibling; | |
8630 | ||
8631 | /* Are there any children to deal with? */ | |
8632 | ||
8633 | if (!orig_pdi->has_children) | |
8634 | return info_ptr; | |
8635 | ||
4bb7a0a7 | 8636 | /* Skip the children the long way. */ |
91c24f0a | 8637 | |
dee91e82 | 8638 | return skip_children (reader, info_ptr); |
91c24f0a DC |
8639 | } |
8640 | ||
257e7a09 | 8641 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 8642 | not NULL. */ |
c906108c | 8643 | |
891813be TT |
8644 | void |
8645 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 8646 | { |
ed2dc618 SM |
8647 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8648 | = get_dwarf2_per_objfile (objfile); | |
8649 | ||
077cbab2 TT |
8650 | gdb_assert (!readin); |
8651 | /* If this psymtab is constructed from a debug-only objfile, the | |
8652 | has_section_at_zero flag will not necessarily be correct. We | |
8653 | can get the correct value for this flag by looking at the data | |
8654 | associated with the (presumably stripped) associated objfile. */ | |
8655 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 8656 | { |
077cbab2 TT |
8657 | struct dwarf2_per_objfile *dpo_backlink |
8658 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); | |
c906108c | 8659 | |
077cbab2 TT |
8660 | dwarf2_per_objfile->has_section_at_zero |
8661 | = dpo_backlink->has_section_at_zero; | |
8662 | } | |
98bfdba5 | 8663 | |
8566b89b | 8664 | expand_psymtab (objfile); |
95554aad | 8665 | |
ed2dc618 | 8666 | process_cu_includes (dwarf2_per_objfile); |
c906108c | 8667 | } |
9cdd5dbd DE |
8668 | \f |
8669 | /* Reading in full CUs. */ | |
c906108c | 8670 | |
10b3939b DJ |
8671 | /* Add PER_CU to the queue. */ |
8672 | ||
8673 | static void | |
95554aad TT |
8674 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
8675 | enum language pretend_language) | |
10b3939b | 8676 | { |
10b3939b | 8677 | per_cu->queued = 1; |
39856def | 8678 | per_cu->dwarf2_per_objfile->queue.emplace (per_cu, pretend_language); |
10b3939b DJ |
8679 | } |
8680 | ||
89e63ee4 DE |
8681 | /* If PER_CU is not yet queued, add it to the queue. |
8682 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
8683 | dependency. | |
0907af0c | 8684 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
8685 | meaning either PER_CU is already queued or it is already loaded. |
8686 | ||
8687 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
8688 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
8689 | |
8690 | static int | |
89e63ee4 | 8691 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
8692 | struct dwarf2_per_cu_data *per_cu, |
8693 | enum language pretend_language) | |
8694 | { | |
8695 | /* We may arrive here during partial symbol reading, if we need full | |
8696 | DIEs to process an unusual case (e.g. template arguments). Do | |
8697 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
ed2dc618 | 8698 | if (per_cu->dwarf2_per_objfile->reading_partial_symbols) |
0907af0c DE |
8699 | { |
8700 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
8701 | return 1; | |
8702 | return 0; | |
8703 | } | |
8704 | ||
8705 | /* Mark the dependence relation so that we don't flush PER_CU | |
8706 | too early. */ | |
89e63ee4 DE |
8707 | if (dependent_cu != NULL) |
8708 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
8709 | |
8710 | /* If it's already on the queue, we have nothing to do. */ | |
8711 | if (per_cu->queued) | |
8712 | return 0; | |
8713 | ||
8714 | /* If the compilation unit is already loaded, just mark it as | |
8715 | used. */ | |
8716 | if (per_cu->cu != NULL) | |
8717 | { | |
8718 | per_cu->cu->last_used = 0; | |
8719 | return 0; | |
8720 | } | |
8721 | ||
8722 | /* Add it to the queue. */ | |
8723 | queue_comp_unit (per_cu, pretend_language); | |
8724 | ||
8725 | return 1; | |
8726 | } | |
8727 | ||
10b3939b DJ |
8728 | /* Process the queue. */ |
8729 | ||
8730 | static void | |
ed2dc618 | 8731 | process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile) |
10b3939b | 8732 | { |
b4f54984 | 8733 | if (dwarf_read_debug) |
45cfd468 DE |
8734 | { |
8735 | fprintf_unfiltered (gdb_stdlog, | |
8736 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 8737 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
8738 | } |
8739 | ||
03dd20cc DJ |
8740 | /* The queue starts out with one item, but following a DIE reference |
8741 | may load a new CU, adding it to the end of the queue. */ | |
39856def | 8742 | while (!dwarf2_per_objfile->queue.empty ()) |
10b3939b | 8743 | { |
39856def TT |
8744 | dwarf2_queue_item &item = dwarf2_per_objfile->queue.front (); |
8745 | ||
cc12ce38 | 8746 | if ((dwarf2_per_objfile->using_index |
39856def TT |
8747 | ? !item.per_cu->v.quick->compunit_symtab |
8748 | : (item.per_cu->v.psymtab && !item.per_cu->v.psymtab->readin)) | |
cc12ce38 | 8749 | /* Skip dummy CUs. */ |
39856def | 8750 | && item.per_cu->cu != NULL) |
f4dc4d17 | 8751 | { |
39856def | 8752 | struct dwarf2_per_cu_data *per_cu = item.per_cu; |
73be47f5 | 8753 | unsigned int debug_print_threshold; |
247f5c4f | 8754 | char buf[100]; |
f4dc4d17 | 8755 | |
247f5c4f | 8756 | if (per_cu->is_debug_types) |
f4dc4d17 | 8757 | { |
247f5c4f DE |
8758 | struct signatured_type *sig_type = |
8759 | (struct signatured_type *) per_cu; | |
8760 | ||
9d8780f0 | 8761 | sprintf (buf, "TU %s at offset %s", |
73be47f5 | 8762 | hex_string (sig_type->signature), |
9d8780f0 | 8763 | sect_offset_str (per_cu->sect_off)); |
73be47f5 DE |
8764 | /* There can be 100s of TUs. |
8765 | Only print them in verbose mode. */ | |
8766 | debug_print_threshold = 2; | |
f4dc4d17 | 8767 | } |
247f5c4f | 8768 | else |
73be47f5 | 8769 | { |
9d8780f0 SM |
8770 | sprintf (buf, "CU at offset %s", |
8771 | sect_offset_str (per_cu->sect_off)); | |
73be47f5 DE |
8772 | debug_print_threshold = 1; |
8773 | } | |
247f5c4f | 8774 | |
b4f54984 | 8775 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 8776 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
8777 | |
8778 | if (per_cu->is_debug_types) | |
39856def | 8779 | process_full_type_unit (per_cu, item.pretend_language); |
f4dc4d17 | 8780 | else |
39856def | 8781 | process_full_comp_unit (per_cu, item.pretend_language); |
f4dc4d17 | 8782 | |
b4f54984 | 8783 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 8784 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 8785 | } |
10b3939b | 8786 | |
39856def TT |
8787 | item.per_cu->queued = 0; |
8788 | dwarf2_per_objfile->queue.pop (); | |
10b3939b DJ |
8789 | } |
8790 | ||
b4f54984 | 8791 | if (dwarf_read_debug) |
45cfd468 DE |
8792 | { |
8793 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 8794 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 8795 | } |
10b3939b DJ |
8796 | } |
8797 | ||
10b3939b DJ |
8798 | /* Read in full symbols for PST, and anything it depends on. */ |
8799 | ||
8566b89b TT |
8800 | void |
8801 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 8802 | { |
8566b89b | 8803 | if (readin) |
95554aad TT |
8804 | return; |
8805 | ||
48993951 | 8806 | expand_dependencies (objfile); |
aaa75496 | 8807 | |
b83470bf TT |
8808 | dw2_do_instantiate_symtab (per_cu_data, false); |
8809 | gdb_assert (get_compunit_symtab () != nullptr); | |
10b3939b DJ |
8810 | } |
8811 | ||
dee91e82 DE |
8812 | /* Trivial hash function for die_info: the hash value of a DIE |
8813 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 8814 | |
dee91e82 DE |
8815 | static hashval_t |
8816 | die_hash (const void *item) | |
10b3939b | 8817 | { |
9a3c8263 | 8818 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 8819 | |
9c541725 | 8820 | return to_underlying (die->sect_off); |
dee91e82 | 8821 | } |
63d06c5c | 8822 | |
dee91e82 DE |
8823 | /* Trivial comparison function for die_info structures: two DIEs |
8824 | are equal if they have the same offset. */ | |
98bfdba5 | 8825 | |
dee91e82 DE |
8826 | static int |
8827 | die_eq (const void *item_lhs, const void *item_rhs) | |
8828 | { | |
9a3c8263 SM |
8829 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
8830 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 8831 | |
9c541725 | 8832 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 8833 | } |
c906108c | 8834 | |
c0ab21c2 | 8835 | /* Load the DIEs associated with PER_CU into memory. */ |
c906108c | 8836 | |
dee91e82 | 8837 | static void |
c0ab21c2 TT |
8838 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
8839 | bool skip_partial, | |
8840 | enum language pretend_language) | |
dee91e82 | 8841 | { |
c0ab21c2 TT |
8842 | gdb_assert (! this_cu->is_debug_types); |
8843 | ||
6751ebae | 8844 | cutu_reader reader (this_cu, NULL, 1, skip_partial); |
c0ab21c2 TT |
8845 | if (reader.dummy_p) |
8846 | return; | |
8847 | ||
8848 | struct dwarf2_cu *cu = reader.cu; | |
8849 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 8850 | |
dee91e82 DE |
8851 | gdb_assert (cu->die_hash == NULL); |
8852 | cu->die_hash = | |
8853 | htab_create_alloc_ex (cu->header.length / 12, | |
8854 | die_hash, | |
8855 | die_eq, | |
8856 | NULL, | |
8857 | &cu->comp_unit_obstack, | |
8858 | hashtab_obstack_allocate, | |
8859 | dummy_obstack_deallocate); | |
e142c38c | 8860 | |
3e225074 | 8861 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
8862 | reader.comp_unit_die->child |
8863 | = read_die_and_siblings (&reader, reader.info_ptr, | |
8864 | &info_ptr, reader.comp_unit_die); | |
8865 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 8866 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
8867 | |
8868 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 8869 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 8870 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
8871 | or we won't be able to build types correctly. |
8872 | Similarly, if we do not read the producer, we can not apply | |
8873 | producer-specific interpretation. */ | |
c0ab21c2 | 8874 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
6751ebae TT |
8875 | |
8876 | reader.keep (); | |
10b3939b DJ |
8877 | } |
8878 | ||
3da10d80 KS |
8879 | /* Add a DIE to the delayed physname list. */ |
8880 | ||
8881 | static void | |
8882 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
8883 | const char *name, struct die_info *die, | |
8884 | struct dwarf2_cu *cu) | |
8885 | { | |
8886 | struct delayed_method_info mi; | |
8887 | mi.type = type; | |
8888 | mi.fnfield_index = fnfield_index; | |
8889 | mi.index = index; | |
8890 | mi.name = name; | |
8891 | mi.die = die; | |
c89b44cd | 8892 | cu->method_list.push_back (mi); |
3da10d80 KS |
8893 | } |
8894 | ||
3693fdb3 PA |
8895 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
8896 | "const" / "volatile". If so, decrements LEN by the length of the | |
8897 | modifier and return true. Otherwise return false. */ | |
8898 | ||
8899 | template<size_t N> | |
8900 | static bool | |
8901 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
8902 | { | |
8903 | size_t mod_len = sizeof (mod) - 1; | |
8904 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
8905 | { | |
8906 | len -= mod_len; | |
8907 | return true; | |
8908 | } | |
8909 | return false; | |
8910 | } | |
8911 | ||
3da10d80 KS |
8912 | /* Compute the physnames of any methods on the CU's method list. |
8913 | ||
8914 | The computation of method physnames is delayed in order to avoid the | |
8915 | (bad) condition that one of the method's formal parameters is of an as yet | |
8916 | incomplete type. */ | |
8917 | ||
8918 | static void | |
8919 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
8920 | { | |
3693fdb3 | 8921 | /* Only C++ delays computing physnames. */ |
c89b44cd | 8922 | if (cu->method_list.empty ()) |
3693fdb3 PA |
8923 | return; |
8924 | gdb_assert (cu->language == language_cplus); | |
8925 | ||
52941706 | 8926 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 8927 | { |
1d06ead6 | 8928 | const char *physname; |
3da10d80 | 8929 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
8930 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
8931 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
8932 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 8933 | = physname ? physname : ""; |
3693fdb3 PA |
8934 | |
8935 | /* Since there's no tag to indicate whether a method is a | |
8936 | const/volatile overload, extract that information out of the | |
8937 | demangled name. */ | |
8938 | if (physname != NULL) | |
8939 | { | |
8940 | size_t len = strlen (physname); | |
8941 | ||
8942 | while (1) | |
8943 | { | |
8944 | if (physname[len] == ')') /* shortcut */ | |
8945 | break; | |
8946 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 8947 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 8948 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 8949 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
8950 | else |
8951 | break; | |
8952 | } | |
8953 | } | |
3da10d80 | 8954 | } |
c89b44cd TT |
8955 | |
8956 | /* The list is no longer needed. */ | |
8957 | cu->method_list.clear (); | |
3da10d80 KS |
8958 | } |
8959 | ||
a766d390 DE |
8960 | /* Go objects should be embedded in a DW_TAG_module DIE, |
8961 | and it's not clear if/how imported objects will appear. | |
8962 | To keep Go support simple until that's worked out, | |
8963 | go back through what we've read and create something usable. | |
8964 | We could do this while processing each DIE, and feels kinda cleaner, | |
8965 | but that way is more invasive. | |
8966 | This is to, for example, allow the user to type "p var" or "b main" | |
8967 | without having to specify the package name, and allow lookups | |
8968 | of module.object to work in contexts that use the expression | |
8969 | parser. */ | |
8970 | ||
8971 | static void | |
8972 | fixup_go_packaging (struct dwarf2_cu *cu) | |
8973 | { | |
421d1616 | 8974 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
8975 | struct pending *list; |
8976 | int i; | |
8977 | ||
c24bdb02 | 8978 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
8979 | list != NULL; |
8980 | list = list->next) | |
a766d390 DE |
8981 | { |
8982 | for (i = 0; i < list->nsyms; ++i) | |
8983 | { | |
8984 | struct symbol *sym = list->symbol[i]; | |
8985 | ||
c1b5c1eb | 8986 | if (sym->language () == language_go |
a766d390 DE |
8987 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
8988 | { | |
421d1616 TT |
8989 | gdb::unique_xmalloc_ptr<char> this_package_name |
8990 | (go_symbol_package_name (sym)); | |
a766d390 DE |
8991 | |
8992 | if (this_package_name == NULL) | |
8993 | continue; | |
8994 | if (package_name == NULL) | |
421d1616 | 8995 | package_name = std::move (this_package_name); |
a766d390 DE |
8996 | else |
8997 | { | |
518817b3 SM |
8998 | struct objfile *objfile |
8999 | = cu->per_cu->dwarf2_per_objfile->objfile; | |
421d1616 | 9000 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9001 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9002 | (symbol_symtab (sym) != NULL |
9003 | ? symtab_to_filename_for_display | |
9004 | (symbol_symtab (sym)) | |
e3b94546 | 9005 | : objfile_name (objfile)), |
421d1616 | 9006 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9007 | } |
9008 | } | |
9009 | } | |
9010 | } | |
9011 | ||
9012 | if (package_name != NULL) | |
9013 | { | |
518817b3 | 9014 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
be1e3d3e | 9015 | const char *saved_package_name = objfile->intern (package_name.get ()); |
19f392bc UW |
9016 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9017 | saved_package_name); | |
a766d390 DE |
9018 | struct symbol *sym; |
9019 | ||
e623cf5d | 9020 | sym = allocate_symbol (objfile); |
d3ecddab | 9021 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9022 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9023 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9024 | e.g., "main" finds the "main" module and not C's main(). */ | |
9025 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9026 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9027 | SYMBOL_TYPE (sym) = type; |
9028 | ||
c24bdb02 | 9029 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9030 | } |
9031 | } | |
9032 | ||
c9317f21 TT |
9033 | /* Allocate a fully-qualified name consisting of the two parts on the |
9034 | obstack. */ | |
9035 | ||
9036 | static const char * | |
9037 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9038 | { | |
9039 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9040 | } | |
9041 | ||
9042 | /* A helper that allocates a struct discriminant_info to attach to a | |
9043 | union type. */ | |
9044 | ||
9045 | static struct discriminant_info * | |
9046 | alloc_discriminant_info (struct type *type, int discriminant_index, | |
9047 | int default_index) | |
9048 | { | |
9049 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
c7b15a66 TT |
9050 | gdb_assert (discriminant_index == -1 |
9051 | || (discriminant_index >= 0 | |
9052 | && discriminant_index < TYPE_NFIELDS (type))); | |
c9317f21 | 9053 | gdb_assert (default_index == -1 |
c7b15a66 | 9054 | || (default_index >= 0 && default_index < TYPE_NFIELDS (type))); |
c9317f21 TT |
9055 | |
9056 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
9057 | ||
9058 | struct discriminant_info *disc | |
9059 | = ((struct discriminant_info *) | |
9060 | TYPE_ZALLOC (type, | |
9061 | offsetof (struct discriminant_info, discriminants) | |
9062 | + TYPE_NFIELDS (type) * sizeof (disc->discriminants[0]))); | |
9063 | disc->default_index = default_index; | |
9064 | disc->discriminant_index = discriminant_index; | |
9065 | ||
9066 | struct dynamic_prop prop; | |
9067 | prop.kind = PROP_UNDEFINED; | |
9068 | prop.data.baton = disc; | |
9069 | ||
9070 | add_dyn_prop (DYN_PROP_DISCRIMINATED, prop, type); | |
9071 | ||
9072 | return disc; | |
9073 | } | |
9074 | ||
9075 | /* Some versions of rustc emitted enums in an unusual way. | |
9076 | ||
9077 | Ordinary enums were emitted as unions. The first element of each | |
9078 | structure in the union was named "RUST$ENUM$DISR". This element | |
9079 | held the discriminant. | |
9080 | ||
9081 | These versions of Rust also implemented the "non-zero" | |
9082 | optimization. When the enum had two values, and one is empty and | |
9083 | the other holds a pointer that cannot be zero, the pointer is used | |
9084 | as the discriminant, with a zero value meaning the empty variant. | |
9085 | Here, the union's first member is of the form | |
9086 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9087 | where the fieldnos are the indices of the fields that should be | |
9088 | traversed in order to find the field (which may be several fields deep) | |
9089 | and the variantname is the name of the variant of the case when the | |
9090 | field is zero. | |
9091 | ||
9092 | This function recognizes whether TYPE is of one of these forms, | |
9093 | and, if so, smashes it to be a variant type. */ | |
9094 | ||
9095 | static void | |
9096 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9097 | { | |
9098 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
9099 | ||
9100 | /* We don't need to deal with empty enums. */ | |
9101 | if (TYPE_NFIELDS (type) == 0) | |
9102 | return; | |
9103 | ||
9104 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
9105 | if (TYPE_NFIELDS (type) == 1 | |
9106 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) | |
9107 | { | |
9108 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9109 | ||
9110 | /* Decode the field name to find the offset of the | |
9111 | discriminant. */ | |
9112 | ULONGEST bit_offset = 0; | |
9113 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); | |
9114 | while (name[0] >= '0' && name[0] <= '9') | |
9115 | { | |
9116 | char *tail; | |
9117 | unsigned long index = strtoul (name, &tail, 10); | |
9118 | name = tail; | |
9119 | if (*name != '$' | |
9120 | || index >= TYPE_NFIELDS (field_type) | |
9121 | || (TYPE_FIELD_LOC_KIND (field_type, index) | |
9122 | != FIELD_LOC_KIND_BITPOS)) | |
9123 | { | |
b98664d3 | 9124 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9125 | "[in module %s]"), |
9126 | TYPE_FIELD_NAME (type, 0), | |
9127 | objfile_name (objfile)); | |
9128 | return; | |
9129 | } | |
9130 | ++name; | |
9131 | ||
9132 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
9133 | field_type = TYPE_FIELD_TYPE (field_type, index); | |
9134 | } | |
9135 | ||
9136 | /* Make a union to hold the variants. */ | |
9137 | struct type *union_type = alloc_type (objfile); | |
9138 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9139 | TYPE_NFIELDS (union_type) = 3; | |
9140 | TYPE_FIELDS (union_type) | |
9141 | = (struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field)); | |
9142 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9143 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9144 | |
9145 | /* Put the discriminant must at index 0. */ | |
9146 | TYPE_FIELD_TYPE (union_type, 0) = field_type; | |
9147 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
9148 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
9149 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 0), bit_offset); | |
9150 | ||
9151 | /* The order of fields doesn't really matter, so put the real | |
9152 | field at index 1 and the data-less field at index 2. */ | |
9153 | struct discriminant_info *disc | |
9154 | = alloc_discriminant_info (union_type, 0, 1); | |
9155 | TYPE_FIELD (union_type, 1) = TYPE_FIELD (type, 0); | |
9156 | TYPE_FIELD_NAME (union_type, 1) | |
9157 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1))); | |
9158 | TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1)) | |
9159 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
9160 | TYPE_FIELD_NAME (union_type, 1)); | |
9161 | ||
9162 | const char *dataless_name | |
9163 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
9164 | name); | |
9165 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9166 | dataless_name); | |
9167 | TYPE_FIELD_TYPE (union_type, 2) = dataless_type; | |
9168 | /* NAME points into the original discriminant name, which | |
9169 | already has the correct lifetime. */ | |
9170 | TYPE_FIELD_NAME (union_type, 2) = name; | |
9171 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 2), 0); | |
9172 | disc->discriminants[2] = 0; | |
9173 | ||
9174 | /* Smash this type to be a structure type. We have to do this | |
9175 | because the type has already been recorded. */ | |
9176 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9177 | TYPE_NFIELDS (type) = 1; | |
9178 | TYPE_FIELDS (type) | |
9179 | = (struct field *) TYPE_ZALLOC (type, sizeof (struct field)); | |
9180 | ||
9181 | /* Install the variant part. */ | |
9182 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
9183 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
9184 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
9185 | } | |
77c2dba3 TT |
9186 | /* A union with a single anonymous field is probably an old-style |
9187 | univariant enum. */ | |
9188 | else if (TYPE_NFIELDS (type) == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) | |
c9317f21 | 9189 | { |
c9317f21 TT |
9190 | /* Smash this type to be a structure type. We have to do this |
9191 | because the type has already been recorded. */ | |
9192 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9193 | ||
9194 | /* Make a union to hold the variants. */ | |
9195 | struct type *union_type = alloc_type (objfile); | |
9196 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9197 | TYPE_NFIELDS (union_type) = TYPE_NFIELDS (type); | |
9198 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9199 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9200 | TYPE_FIELDS (union_type) = TYPE_FIELDS (type); |
9201 | ||
9202 | struct type *field_type = TYPE_FIELD_TYPE (union_type, 0); | |
9203 | const char *variant_name | |
9204 | = rust_last_path_segment (TYPE_NAME (field_type)); | |
9205 | TYPE_FIELD_NAME (union_type, 0) = variant_name; | |
9206 | TYPE_NAME (field_type) | |
9207 | = rust_fully_qualify (&objfile->objfile_obstack, | |
c7b15a66 | 9208 | TYPE_NAME (type), variant_name); |
c9317f21 TT |
9209 | |
9210 | /* Install the union in the outer struct type. */ | |
9211 | TYPE_NFIELDS (type) = 1; | |
9212 | TYPE_FIELDS (type) | |
9213 | = (struct field *) TYPE_ZALLOC (union_type, sizeof (struct field)); | |
9214 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
9215 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
9216 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
9217 | ||
9218 | alloc_discriminant_info (union_type, -1, 0); | |
9219 | } | |
9220 | else | |
9221 | { | |
9222 | struct type *disr_type = nullptr; | |
9223 | for (int i = 0; i < TYPE_NFIELDS (type); ++i) | |
9224 | { | |
9225 | disr_type = TYPE_FIELD_TYPE (type, i); | |
9226 | ||
a037790e TT |
9227 | if (TYPE_CODE (disr_type) != TYPE_CODE_STRUCT) |
9228 | { | |
9229 | /* All fields of a true enum will be structs. */ | |
9230 | return; | |
9231 | } | |
9232 | else if (TYPE_NFIELDS (disr_type) == 0) | |
c9317f21 TT |
9233 | { |
9234 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9235 | disr_type = nullptr; |
c9317f21 TT |
9236 | } |
9237 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9238 | "RUST$ENUM$DISR") != 0) | |
9239 | { | |
9240 | /* Not a Rust enum. */ | |
9241 | return; | |
9242 | } | |
9243 | else | |
9244 | { | |
9245 | /* Found one. */ | |
9246 | break; | |
9247 | } | |
9248 | } | |
9249 | ||
9250 | /* If we got here without a discriminant, then it's probably | |
9251 | just a union. */ | |
9252 | if (disr_type == nullptr) | |
9253 | return; | |
9254 | ||
9255 | /* Smash this type to be a structure type. We have to do this | |
9256 | because the type has already been recorded. */ | |
9257 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9258 | ||
9259 | /* Make a union to hold the variants. */ | |
9260 | struct field *disr_field = &TYPE_FIELD (disr_type, 0); | |
9261 | struct type *union_type = alloc_type (objfile); | |
9262 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9263 | TYPE_NFIELDS (union_type) = 1 + TYPE_NFIELDS (type); | |
9264 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9265 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9266 | TYPE_FIELDS (union_type) |
9267 | = (struct field *) TYPE_ZALLOC (union_type, | |
9268 | (TYPE_NFIELDS (union_type) | |
9269 | * sizeof (struct field))); | |
9270 | ||
9271 | memcpy (TYPE_FIELDS (union_type) + 1, TYPE_FIELDS (type), | |
9272 | TYPE_NFIELDS (type) * sizeof (struct field)); | |
9273 | ||
9274 | /* Install the discriminant at index 0 in the union. */ | |
9275 | TYPE_FIELD (union_type, 0) = *disr_field; | |
9276 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
9277 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
9278 | ||
9279 | /* Install the union in the outer struct type. */ | |
9280 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
9281 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
9282 | TYPE_NFIELDS (type) = 1; | |
9283 | ||
9284 | /* Set the size and offset of the union type. */ | |
9285 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
9286 | ||
9287 | /* We need a way to find the correct discriminant given a | |
9288 | variant name. For convenience we build a map here. */ | |
9289 | struct type *enum_type = FIELD_TYPE (*disr_field); | |
9290 | std::unordered_map<std::string, ULONGEST> discriminant_map; | |
9291 | for (int i = 0; i < TYPE_NFIELDS (enum_type); ++i) | |
9292 | { | |
9293 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9294 | { | |
9295 | const char *name | |
9296 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9297 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9298 | } | |
9299 | } | |
9300 | ||
9301 | int n_fields = TYPE_NFIELDS (union_type); | |
9302 | struct discriminant_info *disc | |
9303 | = alloc_discriminant_info (union_type, 0, -1); | |
9304 | /* Skip the discriminant here. */ | |
9305 | for (int i = 1; i < n_fields; ++i) | |
9306 | { | |
9307 | /* Find the final word in the name of this variant's type. | |
9308 | That name can be used to look up the correct | |
9309 | discriminant. */ | |
9310 | const char *variant_name | |
9311 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, | |
9312 | i))); | |
9313 | ||
9314 | auto iter = discriminant_map.find (variant_name); | |
9315 | if (iter != discriminant_map.end ()) | |
9316 | disc->discriminants[i] = iter->second; | |
9317 | ||
bedda9ac | 9318 | /* Remove the discriminant field, if it exists. */ |
c9317f21 | 9319 | struct type *sub_type = TYPE_FIELD_TYPE (union_type, i); |
bedda9ac TT |
9320 | if (TYPE_NFIELDS (sub_type) > 0) |
9321 | { | |
9322 | --TYPE_NFIELDS (sub_type); | |
9323 | ++TYPE_FIELDS (sub_type); | |
9324 | } | |
c9317f21 TT |
9325 | TYPE_FIELD_NAME (union_type, i) = variant_name; |
9326 | TYPE_NAME (sub_type) | |
9327 | = rust_fully_qualify (&objfile->objfile_obstack, | |
9328 | TYPE_NAME (type), variant_name); | |
9329 | } | |
9330 | } | |
9331 | } | |
9332 | ||
9333 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9334 | ||
9335 | static void | |
9336 | rust_union_quirks (struct dwarf2_cu *cu) | |
9337 | { | |
9338 | gdb_assert (cu->language == language_rust); | |
52941706 SM |
9339 | for (type *type_ : cu->rust_unions) |
9340 | quirk_rust_enum (type_, cu->per_cu->dwarf2_per_objfile->objfile); | |
2d79090e TT |
9341 | /* We don't need this any more. */ |
9342 | cu->rust_unions.clear (); | |
c9317f21 TT |
9343 | } |
9344 | ||
95554aad TT |
9345 | /* Return the symtab for PER_CU. This works properly regardless of |
9346 | whether we're using the index or psymtabs. */ | |
9347 | ||
43f3e411 DE |
9348 | static struct compunit_symtab * |
9349 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad | 9350 | { |
ed2dc618 | 9351 | return (per_cu->dwarf2_per_objfile->using_index |
43f3e411 DE |
9352 | ? per_cu->v.quick->compunit_symtab |
9353 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
9354 | } |
9355 | ||
9356 | /* A helper function for computing the list of all symbol tables | |
9357 | included by PER_CU. */ | |
9358 | ||
9359 | static void | |
4c39bc03 | 9360 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9361 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 9362 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 9363 | struct compunit_symtab *immediate_parent) |
95554aad TT |
9364 | { |
9365 | void **slot; | |
43f3e411 | 9366 | struct compunit_symtab *cust; |
95554aad TT |
9367 | |
9368 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
9369 | if (*slot != NULL) | |
9370 | { | |
9371 | /* This inclusion and its children have been processed. */ | |
9372 | return; | |
9373 | } | |
9374 | ||
9375 | *slot = per_cu; | |
9376 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
9377 | cust = get_compunit_symtab (per_cu); |
9378 | if (cust != NULL) | |
ec94af83 DE |
9379 | { |
9380 | /* If this is a type unit only add its symbol table if we haven't | |
9381 | seen it yet (type unit per_cu's can share symtabs). */ | |
9382 | if (per_cu->is_debug_types) | |
9383 | { | |
43f3e411 | 9384 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9385 | if (*slot == NULL) |
9386 | { | |
43f3e411 | 9387 | *slot = cust; |
4c39bc03 | 9388 | result->push_back (cust); |
43f3e411 DE |
9389 | if (cust->user == NULL) |
9390 | cust->user = immediate_parent; | |
ec94af83 DE |
9391 | } |
9392 | } | |
9393 | else | |
f9125b6c | 9394 | { |
4c39bc03 | 9395 | result->push_back (cust); |
43f3e411 DE |
9396 | if (cust->user == NULL) |
9397 | cust->user = immediate_parent; | |
f9125b6c | 9398 | } |
ec94af83 | 9399 | } |
95554aad | 9400 | |
ae640021 AB |
9401 | if (!per_cu->imported_symtabs_empty ()) |
9402 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
9403 | { | |
9404 | recursively_compute_inclusions (result, all_children, | |
9405 | all_type_symtabs, ptr, cust); | |
9406 | } | |
95554aad TT |
9407 | } |
9408 | ||
43f3e411 | 9409 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
9410 | PER_CU. */ |
9411 | ||
9412 | static void | |
43f3e411 | 9413 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 9414 | { |
f4dc4d17 DE |
9415 | gdb_assert (! per_cu->is_debug_types); |
9416 | ||
ae640021 | 9417 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 9418 | { |
ae640021 | 9419 | int len; |
4c39bc03 | 9420 | std::vector<compunit_symtab *> result_symtabs; |
ec94af83 | 9421 | htab_t all_children, all_type_symtabs; |
43f3e411 | 9422 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
9423 | |
9424 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 9425 | if (cust == NULL) |
95554aad TT |
9426 | return; |
9427 | ||
9428 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
9429 | NULL, xcalloc, xfree); | |
ec94af83 DE |
9430 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
9431 | NULL, xcalloc, xfree); | |
95554aad | 9432 | |
ae640021 | 9433 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 DE |
9434 | { |
9435 | recursively_compute_inclusions (&result_symtabs, all_children, | |
ae640021 | 9436 | all_type_symtabs, ptr, cust); |
ec94af83 | 9437 | } |
95554aad | 9438 | |
ec94af83 | 9439 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 9440 | len = result_symtabs.size (); |
43f3e411 | 9441 | cust->includes |
ed2dc618 | 9442 | = XOBNEWVEC (&per_cu->dwarf2_per_objfile->objfile->objfile_obstack, |
8d749320 | 9443 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
9444 | memcpy (cust->includes, result_symtabs.data (), |
9445 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 9446 | cust->includes[len] = NULL; |
95554aad | 9447 | |
95554aad | 9448 | htab_delete (all_children); |
ec94af83 | 9449 | htab_delete (all_type_symtabs); |
95554aad TT |
9450 | } |
9451 | } | |
9452 | ||
9453 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
9454 | read. */ | |
9455 | ||
9456 | static void | |
ed2dc618 | 9457 | process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 9458 | { |
71b73764 | 9459 | for (dwarf2_per_cu_data *iter : dwarf2_per_objfile->just_read_cus) |
f4dc4d17 DE |
9460 | { |
9461 | if (! iter->is_debug_types) | |
43f3e411 | 9462 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 9463 | } |
95554aad | 9464 | |
c5d0225d | 9465 | dwarf2_per_objfile->just_read_cus.clear (); |
95554aad TT |
9466 | } |
9467 | ||
9cdd5dbd | 9468 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
9469 | already been loaded into memory. */ |
9470 | ||
9471 | static void | |
95554aad TT |
9472 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
9473 | enum language pretend_language) | |
10b3939b | 9474 | { |
10b3939b | 9475 | struct dwarf2_cu *cu = per_cu->cu; |
ed2dc618 SM |
9476 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9477 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3e29f34a | 9478 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 9479 | CORE_ADDR lowpc, highpc; |
43f3e411 | 9480 | struct compunit_symtab *cust; |
10b3939b | 9481 | CORE_ADDR baseaddr; |
4359dff1 | 9482 | struct block *static_block; |
3e29f34a | 9483 | CORE_ADDR addr; |
10b3939b | 9484 | |
b3b3bada | 9485 | baseaddr = objfile->text_section_offset (); |
10b3939b | 9486 | |
c89b44cd TT |
9487 | /* Clear the list here in case something was left over. */ |
9488 | cu->method_list.clear (); | |
10b3939b | 9489 | |
95554aad TT |
9490 | cu->language = pretend_language; |
9491 | cu->language_defn = language_def (cu->language); | |
9492 | ||
c906108c | 9493 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 9494 | process_die (cu->dies, cu); |
c906108c | 9495 | |
a766d390 DE |
9496 | /* For now fudge the Go package. */ |
9497 | if (cu->language == language_go) | |
9498 | fixup_go_packaging (cu); | |
9499 | ||
5f48f8f3 | 9500 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
9501 | should be complete, and it should now be safe to compute all of the |
9502 | physnames. */ | |
9503 | compute_delayed_physnames (cu); | |
3da10d80 | 9504 | |
c9317f21 TT |
9505 | if (cu->language == language_rust) |
9506 | rust_union_quirks (cu); | |
9507 | ||
fae299cd DC |
9508 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
9509 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
9510 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 9511 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 9512 | |
3e29f34a | 9513 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 9514 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
9515 | |
9516 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
9517 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
9518 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
9519 | addrmap to help ensure it has an accurate map of pc values belonging to | |
9520 | this comp unit. */ | |
9521 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
9522 | ||
c24bdb02 | 9523 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
9524 | SECT_OFF_TEXT (objfile), |
9525 | 0); | |
c906108c | 9526 | |
43f3e411 | 9527 | if (cust != NULL) |
c906108c | 9528 | { |
df15bd07 | 9529 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 9530 | |
8be455d7 JK |
9531 | /* Set symtab language to language from DW_AT_language. If the |
9532 | compilation is from a C file generated by language preprocessors, do | |
9533 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 9534 | if (!(cu->language == language_c |
40e3ad0e | 9535 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 9536 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
9537 | |
9538 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
9539 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
9540 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
9541 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
9542 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
9543 | |
9544 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
9545 | needed, it would be wrong due to missing DW_AT_producer there. | |
9546 | ||
9547 | Still one can confuse GDB by using non-standard GCC compilation | |
9548 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 9549 | */ |
ab260dad | 9550 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 9551 | cust->locations_valid = 1; |
e0d00bc7 JK |
9552 | |
9553 | if (gcc_4_minor >= 5) | |
43f3e411 | 9554 | cust->epilogue_unwind_valid = 1; |
96408a79 | 9555 | |
43f3e411 | 9556 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 9557 | } |
9291a0cd TT |
9558 | |
9559 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 9560 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
9561 | else |
9562 | { | |
891813be | 9563 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
43f3e411 | 9564 | pst->compunit_symtab = cust; |
6d94535f | 9565 | pst->readin = true; |
9291a0cd | 9566 | } |
c906108c | 9567 | |
95554aad | 9568 | /* Push it for inclusion processing later. */ |
c5d0225d | 9569 | dwarf2_per_objfile->just_read_cus.push_back (per_cu); |
804d2729 TT |
9570 | |
9571 | /* Not needed any more. */ | |
c24bdb02 | 9572 | cu->reset_builder (); |
f4dc4d17 | 9573 | } |
45cfd468 | 9574 | |
f4dc4d17 DE |
9575 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
9576 | already been loaded into memory. */ | |
9577 | ||
9578 | static void | |
9579 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
9580 | enum language pretend_language) | |
9581 | { | |
9582 | struct dwarf2_cu *cu = per_cu->cu; | |
ed2dc618 SM |
9583 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9584 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
43f3e411 | 9585 | struct compunit_symtab *cust; |
0186c6a7 DE |
9586 | struct signatured_type *sig_type; |
9587 | ||
9588 | gdb_assert (per_cu->is_debug_types); | |
9589 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 9590 | |
c89b44cd TT |
9591 | /* Clear the list here in case something was left over. */ |
9592 | cu->method_list.clear (); | |
f4dc4d17 | 9593 | |
f4dc4d17 DE |
9594 | cu->language = pretend_language; |
9595 | cu->language_defn = language_def (cu->language); | |
9596 | ||
9597 | /* The symbol tables are set up in read_type_unit_scope. */ | |
9598 | process_die (cu->dies, cu); | |
9599 | ||
9600 | /* For now fudge the Go package. */ | |
9601 | if (cu->language == language_go) | |
9602 | fixup_go_packaging (cu); | |
9603 | ||
5f48f8f3 | 9604 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
9605 | should be complete, and it should now be safe to compute all of the |
9606 | physnames. */ | |
9607 | compute_delayed_physnames (cu); | |
f4dc4d17 | 9608 | |
c9317f21 TT |
9609 | if (cu->language == language_rust) |
9610 | rust_union_quirks (cu); | |
9611 | ||
f4dc4d17 DE |
9612 | /* TUs share symbol tables. |
9613 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
9614 | of it with end_expandable_symtab. Otherwise, complete the addition of |
9615 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 9616 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 9617 | { |
c24bdb02 KS |
9618 | buildsym_compunit *builder = cu->get_builder (); |
9619 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
43f3e411 | 9620 | sig_type->type_unit_group->compunit_symtab = cust; |
f4dc4d17 | 9621 | |
43f3e411 | 9622 | if (cust != NULL) |
f4dc4d17 DE |
9623 | { |
9624 | /* Set symtab language to language from DW_AT_language. If the | |
9625 | compilation is from a C file generated by language preprocessors, | |
9626 | do not set the language if it was already deduced by | |
9627 | start_subfile. */ | |
43f3e411 DE |
9628 | if (!(cu->language == language_c |
9629 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
9630 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
9631 | } |
9632 | } | |
9633 | else | |
9634 | { | |
c24bdb02 | 9635 | cu->get_builder ()->augment_type_symtab (); |
43f3e411 | 9636 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
9637 | } |
9638 | ||
9639 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 9640 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
9641 | else |
9642 | { | |
891813be | 9643 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
43f3e411 | 9644 | pst->compunit_symtab = cust; |
6d94535f | 9645 | pst->readin = true; |
45cfd468 | 9646 | } |
804d2729 TT |
9647 | |
9648 | /* Not needed any more. */ | |
c24bdb02 | 9649 | cu->reset_builder (); |
c906108c SS |
9650 | } |
9651 | ||
95554aad TT |
9652 | /* Process an imported unit DIE. */ |
9653 | ||
9654 | static void | |
9655 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
9656 | { | |
9657 | struct attribute *attr; | |
9658 | ||
f4dc4d17 DE |
9659 | /* For now we don't handle imported units in type units. */ |
9660 | if (cu->per_cu->is_debug_types) | |
9661 | { | |
9662 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
9663 | " supported in type units [in module %s]"), | |
518817b3 | 9664 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
9665 | } |
9666 | ||
95554aad TT |
9667 | attr = dwarf2_attr (die, DW_AT_import, cu); |
9668 | if (attr != NULL) | |
9669 | { | |
0826b30a | 9670 | sect_offset sect_off = attr->get_ref_die_offset (); |
9c541725 PA |
9671 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
9672 | dwarf2_per_cu_data *per_cu | |
e3b94546 | 9673 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, |
518817b3 | 9674 | cu->per_cu->dwarf2_per_objfile); |
95554aad | 9675 | |
58990295 TV |
9676 | /* We're importing a C++ compilation unit with tag DW_TAG_compile_unit |
9677 | into another compilation unit, at root level. Regard this as a hint, | |
9678 | and ignore it. */ | |
9679 | if (die->parent && die->parent->parent == NULL | |
9680 | && per_cu->unit_type == DW_UT_compile | |
9681 | && per_cu->lang == language_cplus) | |
9682 | return; | |
9683 | ||
69d751e3 | 9684 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad | 9685 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 9686 | load_full_comp_unit (per_cu, false, cu->language); |
95554aad | 9687 | |
ae640021 | 9688 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
9689 | } |
9690 | } | |
9691 | ||
4c8aa72d PA |
9692 | /* RAII object that represents a process_die scope: i.e., |
9693 | starts/finishes processing a DIE. */ | |
9694 | class process_die_scope | |
adde2bff | 9695 | { |
4c8aa72d PA |
9696 | public: |
9697 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
9698 | : m_die (die), m_cu (cu) | |
9699 | { | |
9700 | /* We should only be processing DIEs not already in process. */ | |
9701 | gdb_assert (!m_die->in_process); | |
9702 | m_die->in_process = true; | |
9703 | } | |
8c3cb9fa | 9704 | |
4c8aa72d PA |
9705 | ~process_die_scope () |
9706 | { | |
9707 | m_die->in_process = false; | |
9708 | ||
9709 | /* If we're done processing the DIE for the CU that owns the line | |
9710 | header, we don't need the line header anymore. */ | |
9711 | if (m_cu->line_header_die_owner == m_die) | |
9712 | { | |
9713 | delete m_cu->line_header; | |
9714 | m_cu->line_header = NULL; | |
9715 | m_cu->line_header_die_owner = NULL; | |
9716 | } | |
9717 | } | |
9718 | ||
9719 | private: | |
9720 | die_info *m_die; | |
9721 | dwarf2_cu *m_cu; | |
9722 | }; | |
adde2bff | 9723 | |
c906108c SS |
9724 | /* Process a die and its children. */ |
9725 | ||
9726 | static void | |
e7c27a73 | 9727 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9728 | { |
4c8aa72d | 9729 | process_die_scope scope (die, cu); |
adde2bff | 9730 | |
c906108c SS |
9731 | switch (die->tag) |
9732 | { | |
9733 | case DW_TAG_padding: | |
9734 | break; | |
9735 | case DW_TAG_compile_unit: | |
95554aad | 9736 | case DW_TAG_partial_unit: |
e7c27a73 | 9737 | read_file_scope (die, cu); |
c906108c | 9738 | break; |
348e048f DE |
9739 | case DW_TAG_type_unit: |
9740 | read_type_unit_scope (die, cu); | |
9741 | break; | |
c906108c | 9742 | case DW_TAG_subprogram: |
0a4b0913 AB |
9743 | /* Nested subprograms in Fortran get a prefix. */ |
9744 | if (cu->language == language_fortran | |
9745 | && die->parent != NULL | |
9746 | && die->parent->tag == DW_TAG_subprogram) | |
9747 | cu->processing_has_namespace_info = true; | |
9748 | /* Fall through. */ | |
c906108c | 9749 | case DW_TAG_inlined_subroutine: |
edb3359d | 9750 | read_func_scope (die, cu); |
c906108c SS |
9751 | break; |
9752 | case DW_TAG_lexical_block: | |
14898363 L |
9753 | case DW_TAG_try_block: |
9754 | case DW_TAG_catch_block: | |
e7c27a73 | 9755 | read_lexical_block_scope (die, cu); |
c906108c | 9756 | break; |
216f72a1 | 9757 | case DW_TAG_call_site: |
96408a79 SA |
9758 | case DW_TAG_GNU_call_site: |
9759 | read_call_site_scope (die, cu); | |
9760 | break; | |
c906108c | 9761 | case DW_TAG_class_type: |
680b30c7 | 9762 | case DW_TAG_interface_type: |
c906108c SS |
9763 | case DW_TAG_structure_type: |
9764 | case DW_TAG_union_type: | |
134d01f1 | 9765 | process_structure_scope (die, cu); |
c906108c SS |
9766 | break; |
9767 | case DW_TAG_enumeration_type: | |
134d01f1 | 9768 | process_enumeration_scope (die, cu); |
c906108c | 9769 | break; |
134d01f1 | 9770 | |
f792889a DJ |
9771 | /* These dies have a type, but processing them does not create |
9772 | a symbol or recurse to process the children. Therefore we can | |
9773 | read them on-demand through read_type_die. */ | |
c906108c | 9774 | case DW_TAG_subroutine_type: |
72019c9c | 9775 | case DW_TAG_set_type: |
c906108c | 9776 | case DW_TAG_array_type: |
c906108c | 9777 | case DW_TAG_pointer_type: |
c906108c | 9778 | case DW_TAG_ptr_to_member_type: |
c906108c | 9779 | case DW_TAG_reference_type: |
4297a3f0 | 9780 | case DW_TAG_rvalue_reference_type: |
c906108c | 9781 | case DW_TAG_string_type: |
c906108c | 9782 | break; |
134d01f1 | 9783 | |
c906108c | 9784 | case DW_TAG_base_type: |
a02abb62 | 9785 | case DW_TAG_subrange_type: |
cb249c71 | 9786 | case DW_TAG_typedef: |
134d01f1 DJ |
9787 | /* Add a typedef symbol for the type definition, if it has a |
9788 | DW_AT_name. */ | |
f792889a | 9789 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 9790 | break; |
c906108c | 9791 | case DW_TAG_common_block: |
e7c27a73 | 9792 | read_common_block (die, cu); |
c906108c SS |
9793 | break; |
9794 | case DW_TAG_common_inclusion: | |
9795 | break; | |
d9fa45fe | 9796 | case DW_TAG_namespace: |
9068261f | 9797 | cu->processing_has_namespace_info = true; |
e7c27a73 | 9798 | read_namespace (die, cu); |
d9fa45fe | 9799 | break; |
5d7cb8df | 9800 | case DW_TAG_module: |
9068261f | 9801 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
9802 | read_module (die, cu); |
9803 | break; | |
d9fa45fe | 9804 | case DW_TAG_imported_declaration: |
9068261f | 9805 | cu->processing_has_namespace_info = true; |
74921315 KS |
9806 | if (read_namespace_alias (die, cu)) |
9807 | break; | |
86a73007 TT |
9808 | /* The declaration is not a global namespace alias. */ |
9809 | /* Fall through. */ | |
d9fa45fe | 9810 | case DW_TAG_imported_module: |
9068261f | 9811 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
9812 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
9813 | || cu->language != language_fortran)) | |
b98664d3 | 9814 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
9815 | dwarf_tag_name (die->tag)); |
9816 | read_import_statement (die, cu); | |
d9fa45fe | 9817 | break; |
95554aad TT |
9818 | |
9819 | case DW_TAG_imported_unit: | |
9820 | process_imported_unit_die (die, cu); | |
9821 | break; | |
9822 | ||
71a3c369 TT |
9823 | case DW_TAG_variable: |
9824 | read_variable (die, cu); | |
9825 | break; | |
9826 | ||
c906108c | 9827 | default: |
e7c27a73 | 9828 | new_symbol (die, NULL, cu); |
c906108c SS |
9829 | break; |
9830 | } | |
9831 | } | |
ca69b9e6 DE |
9832 | \f |
9833 | /* DWARF name computation. */ | |
c906108c | 9834 | |
94af9270 KS |
9835 | /* A helper function for dwarf2_compute_name which determines whether DIE |
9836 | needs to have the name of the scope prepended to the name listed in the | |
9837 | die. */ | |
9838 | ||
9839 | static int | |
9840 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
9841 | { | |
1c809c68 TT |
9842 | struct attribute *attr; |
9843 | ||
94af9270 KS |
9844 | switch (die->tag) |
9845 | { | |
9846 | case DW_TAG_namespace: | |
9847 | case DW_TAG_typedef: | |
9848 | case DW_TAG_class_type: | |
9849 | case DW_TAG_interface_type: | |
9850 | case DW_TAG_structure_type: | |
9851 | case DW_TAG_union_type: | |
9852 | case DW_TAG_enumeration_type: | |
9853 | case DW_TAG_enumerator: | |
9854 | case DW_TAG_subprogram: | |
08a76f8a | 9855 | case DW_TAG_inlined_subroutine: |
94af9270 | 9856 | case DW_TAG_member: |
74921315 | 9857 | case DW_TAG_imported_declaration: |
94af9270 KS |
9858 | return 1; |
9859 | ||
9860 | case DW_TAG_variable: | |
c2b0a229 | 9861 | case DW_TAG_constant: |
94af9270 KS |
9862 | /* We only need to prefix "globally" visible variables. These include |
9863 | any variable marked with DW_AT_external or any variable that | |
9864 | lives in a namespace. [Variables in anonymous namespaces | |
9865 | require prefixing, but they are not DW_AT_external.] */ | |
9866 | ||
9867 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
9868 | { | |
9869 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 9870 | |
94af9270 KS |
9871 | return die_needs_namespace (die_specification (die, &spec_cu), |
9872 | spec_cu); | |
9873 | } | |
9874 | ||
1c809c68 | 9875 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
9876 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
9877 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
9878 | return 0; |
9879 | /* A variable in a lexical block of some kind does not need a | |
9880 | namespace, even though in C++ such variables may be external | |
9881 | and have a mangled name. */ | |
9882 | if (die->parent->tag == DW_TAG_lexical_block | |
9883 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
9884 | || die->parent->tag == DW_TAG_catch_block |
9885 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
9886 | return 0; |
9887 | return 1; | |
94af9270 KS |
9888 | |
9889 | default: | |
9890 | return 0; | |
9891 | } | |
9892 | } | |
9893 | ||
73b9be8b KS |
9894 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
9895 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
9896 | defined for the given DIE. */ | |
9897 | ||
9898 | static struct attribute * | |
9899 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
9900 | { | |
9901 | struct attribute *attr; | |
9902 | ||
9903 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
9904 | if (attr == NULL) | |
9905 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
9906 | ||
9907 | return attr; | |
9908 | } | |
9909 | ||
9910 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
9911 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
9912 | defined for the given DIE. */ | |
9913 | ||
9914 | static const char * | |
9915 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
9916 | { | |
9917 | const char *linkage_name; | |
9918 | ||
9919 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
9920 | if (linkage_name == NULL) | |
9921 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
9922 | ||
9923 | return linkage_name; | |
9924 | } | |
9925 | ||
94af9270 | 9926 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 9927 | compute the physname for the object, which include a method's: |
9c37b5ae | 9928 | - formal parameters (C++), |
a766d390 | 9929 | - receiver type (Go), |
a766d390 DE |
9930 | |
9931 | The term "physname" is a bit confusing. | |
9932 | For C++, for example, it is the demangled name. | |
9933 | For Go, for example, it's the mangled name. | |
94af9270 | 9934 | |
af6b7be1 JB |
9935 | For Ada, return the DIE's linkage name rather than the fully qualified |
9936 | name. PHYSNAME is ignored.. | |
9937 | ||
94af9270 KS |
9938 | The result is allocated on the objfile_obstack and canonicalized. */ |
9939 | ||
9940 | static const char * | |
15d034d0 TT |
9941 | dwarf2_compute_name (const char *name, |
9942 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
9943 | int physname) |
9944 | { | |
518817b3 | 9945 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
bb5ed363 | 9946 | |
94af9270 KS |
9947 | if (name == NULL) |
9948 | name = dwarf2_name (die, cu); | |
9949 | ||
2ee7123e DE |
9950 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
9951 | but otherwise compute it by typename_concat inside GDB. | |
9952 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 9953 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 9954 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
9955 | will set the demangled name to the result of dwarf2_full_name, and it is |
9956 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
9957 | if (cu->language == language_ada |
9958 | || (cu->language == language_fortran && physname)) | |
9959 | { | |
9960 | /* For Ada unit, we prefer the linkage name over the name, as | |
9961 | the former contains the exported name, which the user expects | |
9962 | to be able to reference. Ideally, we want the user to be able | |
9963 | to reference this entity using either natural or linkage name, | |
9964 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 9965 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 9966 | |
2ee7123e DE |
9967 | if (linkage_name != NULL) |
9968 | return linkage_name; | |
f55ee35c JK |
9969 | } |
9970 | ||
94af9270 KS |
9971 | /* These are the only languages we know how to qualify names in. */ |
9972 | if (name != NULL | |
9c37b5ae | 9973 | && (cu->language == language_cplus |
c44af4eb TT |
9974 | || cu->language == language_fortran || cu->language == language_d |
9975 | || cu->language == language_rust)) | |
94af9270 KS |
9976 | { |
9977 | if (die_needs_namespace (die, cu)) | |
9978 | { | |
0d5cff50 | 9979 | const char *prefix; |
34a68019 | 9980 | const char *canonical_name = NULL; |
94af9270 | 9981 | |
d7e74731 PA |
9982 | string_file buf; |
9983 | ||
94af9270 | 9984 | prefix = determine_prefix (die, cu); |
94af9270 KS |
9985 | if (*prefix != '\0') |
9986 | { | |
43816ebc TT |
9987 | gdb::unique_xmalloc_ptr<char> prefixed_name |
9988 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 9989 | |
43816ebc | 9990 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
9991 | } |
9992 | else | |
d7e74731 | 9993 | buf.puts (name); |
94af9270 | 9994 | |
98bfdba5 PA |
9995 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
9996 | as children with DW_TAG_template_type_param or | |
9997 | DW_TAG_value_type_param. If the latter, add them to the name | |
9998 | here. If the name already has template parameters, then | |
9999 | skip this step; some versions of GCC emit both, and | |
10000 | it is more efficient to use the pre-computed name. | |
10001 | ||
10002 | Something to keep in mind about this process: it is very | |
10003 | unlikely, or in some cases downright impossible, to produce | |
10004 | something that will match the mangled name of a function. | |
10005 | If the definition of the function has the same debug info, | |
10006 | we should be able to match up with it anyway. But fallbacks | |
10007 | using the minimal symbol, for instance to find a method | |
10008 | implemented in a stripped copy of libstdc++, will not work. | |
10009 | If we do not have debug info for the definition, we will have to | |
10010 | match them up some other way. | |
10011 | ||
10012 | When we do name matching there is a related problem with function | |
10013 | templates; two instantiated function templates are allowed to | |
10014 | differ only by their return types, which we do not add here. */ | |
10015 | ||
10016 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10017 | { | |
10018 | struct attribute *attr; | |
10019 | struct die_info *child; | |
10020 | int first = 1; | |
10021 | ||
10022 | die->building_fullname = 1; | |
10023 | ||
10024 | for (child = die->child; child != NULL; child = child->sibling) | |
10025 | { | |
10026 | struct type *type; | |
12df843f | 10027 | LONGEST value; |
d521ce57 | 10028 | const gdb_byte *bytes; |
98bfdba5 PA |
10029 | struct dwarf2_locexpr_baton *baton; |
10030 | struct value *v; | |
10031 | ||
10032 | if (child->tag != DW_TAG_template_type_param | |
10033 | && child->tag != DW_TAG_template_value_param) | |
10034 | continue; | |
10035 | ||
10036 | if (first) | |
10037 | { | |
d7e74731 | 10038 | buf.puts ("<"); |
98bfdba5 PA |
10039 | first = 0; |
10040 | } | |
10041 | else | |
d7e74731 | 10042 | buf.puts (", "); |
98bfdba5 PA |
10043 | |
10044 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10045 | if (attr == NULL) | |
10046 | { | |
b98664d3 | 10047 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10048 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10049 | continue; |
10050 | } | |
10051 | type = die_type (child, cu); | |
10052 | ||
10053 | if (child->tag == DW_TAG_template_type_param) | |
10054 | { | |
c1ec8cea TT |
10055 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10056 | &type_print_raw_options); | |
98bfdba5 PA |
10057 | continue; |
10058 | } | |
10059 | ||
10060 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10061 | if (attr == NULL) | |
10062 | { | |
b98664d3 | 10063 | complaint (_("template parameter missing " |
3e43a32a | 10064 | "DW_AT_const_value")); |
d7e74731 | 10065 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10066 | continue; |
10067 | } | |
10068 | ||
10069 | dwarf2_const_value_attr (attr, type, name, | |
10070 | &cu->comp_unit_obstack, cu, | |
10071 | &value, &bytes, &baton); | |
10072 | ||
10073 | if (TYPE_NOSIGN (type)) | |
10074 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
10075 | changed, this can use value_print instead. */ | |
d7e74731 | 10076 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10077 | else |
10078 | { | |
10079 | struct value_print_options opts; | |
10080 | ||
10081 | if (baton != NULL) | |
10082 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10083 | baton->data, | |
10084 | baton->size, | |
10085 | baton->per_cu); | |
10086 | else if (bytes != NULL) | |
10087 | { | |
10088 | v = allocate_value (type); | |
10089 | memcpy (value_contents_writeable (v), bytes, | |
10090 | TYPE_LENGTH (type)); | |
10091 | } | |
10092 | else | |
10093 | v = value_from_longest (type, value); | |
10094 | ||
3e43a32a MS |
10095 | /* Specify decimal so that we do not depend on |
10096 | the radix. */ | |
98bfdba5 PA |
10097 | get_formatted_print_options (&opts, 'd'); |
10098 | opts.raw = 1; | |
d7e74731 | 10099 | value_print (v, &buf, &opts); |
98bfdba5 | 10100 | release_value (v); |
98bfdba5 PA |
10101 | } |
10102 | } | |
10103 | ||
10104 | die->building_fullname = 0; | |
10105 | ||
10106 | if (!first) | |
10107 | { | |
10108 | /* Close the argument list, with a space if necessary | |
10109 | (nested templates). */ | |
d7e74731 PA |
10110 | if (!buf.empty () && buf.string ().back () == '>') |
10111 | buf.puts (" >"); | |
98bfdba5 | 10112 | else |
d7e74731 | 10113 | buf.puts (">"); |
98bfdba5 PA |
10114 | } |
10115 | } | |
10116 | ||
9c37b5ae | 10117 | /* For C++ methods, append formal parameter type |
94af9270 | 10118 | information, if PHYSNAME. */ |
6e70227d | 10119 | |
94af9270 | 10120 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10121 | && cu->language == language_cplus) |
94af9270 KS |
10122 | { |
10123 | struct type *type = read_type_die (die, cu); | |
10124 | ||
d7e74731 | 10125 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10126 | &type_print_raw_options); |
94af9270 | 10127 | |
9c37b5ae | 10128 | if (cu->language == language_cplus) |
94af9270 | 10129 | { |
60430eff DJ |
10130 | /* Assume that an artificial first parameter is |
10131 | "this", but do not crash if it is not. RealView | |
10132 | marks unnamed (and thus unused) parameters as | |
10133 | artificial; there is no way to differentiate | |
10134 | the two cases. */ | |
94af9270 KS |
10135 | if (TYPE_NFIELDS (type) > 0 |
10136 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 10137 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
10138 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
10139 | 0)))) | |
d7e74731 | 10140 | buf.puts (" const"); |
94af9270 KS |
10141 | } |
10142 | } | |
10143 | ||
d7e74731 | 10144 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10145 | |
10146 | if (cu->language == language_cplus) | |
34a68019 | 10147 | canonical_name |
322a8516 | 10148 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
be1e3d3e | 10149 | objfile); |
34a68019 TT |
10150 | |
10151 | /* If we only computed INTERMEDIATE_NAME, or if | |
10152 | INTERMEDIATE_NAME is already canonical, then we need to | |
be1e3d3e | 10153 | intern it. */ |
322a8516 | 10154 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
be1e3d3e | 10155 | name = objfile->intern (intermediate_name); |
34a68019 TT |
10156 | else |
10157 | name = canonical_name; | |
94af9270 KS |
10158 | } |
10159 | } | |
10160 | ||
10161 | return name; | |
10162 | } | |
10163 | ||
0114d602 DJ |
10164 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10165 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10166 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10167 | not have a name. NAME may either be from a previous call to |
10168 | dwarf2_name or NULL. | |
10169 | ||
9c37b5ae | 10170 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10171 | |
10172 | static const char * | |
15d034d0 | 10173 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10174 | { |
94af9270 KS |
10175 | return dwarf2_compute_name (name, die, cu, 0); |
10176 | } | |
0114d602 | 10177 | |
94af9270 KS |
10178 | /* Construct a physname for the given DIE in CU. NAME may either be |
10179 | from a previous call to dwarf2_name or NULL. The result will be | |
10180 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10181 | name. | |
0114d602 | 10182 | |
9c37b5ae | 10183 | The output string will be canonicalized (if C++). */ |
0114d602 | 10184 | |
94af9270 | 10185 | static const char * |
15d034d0 | 10186 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10187 | { |
518817b3 | 10188 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
900e11f9 | 10189 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10190 | int need_copy = 1; |
10191 | ||
10192 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10193 | on its own. */ | |
10194 | if (!die_needs_namespace (die, cu)) | |
10195 | return dwarf2_compute_name (name, die, cu, 1); | |
10196 | ||
73b9be8b | 10197 | mangled = dw2_linkage_name (die, cu); |
900e11f9 | 10198 | |
e98c9e7c TT |
10199 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10200 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10201 | if (cu->language == language_rust && mangled != NULL | |
10202 | && strchr (mangled, '{') != NULL) | |
10203 | mangled = NULL; | |
10204 | ||
900e11f9 JK |
10205 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB |
10206 | has computed. */ | |
791afaa2 | 10207 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10208 | if (mangled != NULL) |
900e11f9 | 10209 | { |
900e11f9 | 10210 | |
59cc4834 JB |
10211 | if (language_def (cu->language)->la_store_sym_names_in_linkage_form_p) |
10212 | { | |
10213 | /* Do nothing (do not demangle the symbol name). */ | |
10214 | } | |
10215 | else if (cu->language == language_go) | |
a766d390 | 10216 | { |
5e2db402 TT |
10217 | /* This is a lie, but we already lie to the caller new_symbol. |
10218 | new_symbol assumes we return the mangled name. | |
a766d390 | 10219 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
10220 | } |
10221 | else | |
10222 | { | |
0eb876f5 JB |
10223 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10224 | their return type. It is easier for GDB users to search | |
10225 | for such functions as `name(params)' than `long name(params)'. | |
10226 | In such case the minimal symbol names do not match the full | |
10227 | symbol names but for template functions there is never a need | |
10228 | to look up their definition from their declaration so | |
10229 | the only disadvantage remains the minimal symbol variant | |
10230 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10231 | demangled.reset (gdb_demangle (mangled, |
10232 | (DMGL_PARAMS | DMGL_ANSI | |
10233 | | DMGL_RET_DROP))); | |
a766d390 | 10234 | } |
900e11f9 | 10235 | if (demangled) |
791afaa2 | 10236 | canon = demangled.get (); |
900e11f9 JK |
10237 | else |
10238 | { | |
10239 | canon = mangled; | |
10240 | need_copy = 0; | |
10241 | } | |
10242 | } | |
10243 | ||
10244 | if (canon == NULL || check_physname) | |
10245 | { | |
10246 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10247 | ||
10248 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10249 | { | |
10250 | /* It may not mean a bug in GDB. The compiler could also | |
10251 | compute DW_AT_linkage_name incorrectly. But in such case | |
10252 | GDB would need to be bug-to-bug compatible. */ | |
10253 | ||
b98664d3 | 10254 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10255 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10256 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10257 | objfile_name (objfile)); |
900e11f9 JK |
10258 | |
10259 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10260 | is available here - over computed PHYSNAME. It is safer | |
10261 | against both buggy GDB and buggy compilers. */ | |
10262 | ||
10263 | retval = canon; | |
10264 | } | |
10265 | else | |
10266 | { | |
10267 | retval = physname; | |
10268 | need_copy = 0; | |
10269 | } | |
10270 | } | |
10271 | else | |
10272 | retval = canon; | |
10273 | ||
10274 | if (need_copy) | |
be1e3d3e | 10275 | retval = objfile->intern (retval); |
900e11f9 | 10276 | |
900e11f9 | 10277 | return retval; |
0114d602 DJ |
10278 | } |
10279 | ||
74921315 KS |
10280 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10281 | a new symbol for it. | |
10282 | ||
10283 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10284 | ||
10285 | static int | |
10286 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10287 | { | |
10288 | struct attribute *attr; | |
10289 | ||
10290 | /* If the die does not have a name, this is not a namespace | |
10291 | alias. */ | |
10292 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10293 | if (attr != NULL) | |
10294 | { | |
10295 | int num; | |
10296 | struct die_info *d = die; | |
10297 | struct dwarf2_cu *imported_cu = cu; | |
10298 | ||
10299 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10300 | keep inspecting DIEs until we hit the underlying import. */ | |
10301 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10302 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10303 | { | |
10304 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10305 | if (attr == NULL) | |
10306 | break; | |
10307 | ||
10308 | d = follow_die_ref (d, attr, &imported_cu); | |
10309 | if (d->tag != DW_TAG_imported_declaration) | |
10310 | break; | |
10311 | } | |
10312 | ||
10313 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10314 | { | |
b98664d3 | 10315 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10316 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10317 | return 0; |
10318 | } | |
10319 | ||
10320 | if (attr != NULL) | |
10321 | { | |
10322 | struct type *type; | |
0826b30a | 10323 | sect_offset sect_off = attr->get_ref_die_offset (); |
74921315 | 10324 | |
9c541725 | 10325 | type = get_die_type_at_offset (sect_off, cu->per_cu); |
74921315 KS |
10326 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
10327 | { | |
10328 | /* This declaration is a global namespace alias. Add | |
10329 | a symbol for it whose type is the aliased namespace. */ | |
10330 | new_symbol (die, type, cu); | |
10331 | return 1; | |
10332 | } | |
10333 | } | |
10334 | } | |
10335 | ||
10336 | return 0; | |
10337 | } | |
10338 | ||
22cee43f | 10339 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10340 | current context for CU. |
22cee43f PMR |
10341 | |
10342 | For Ada, imported declarations can materialize renamings, which *may* be | |
10343 | global. However it is impossible (for now?) in DWARF to distinguish | |
10344 | "external" imported declarations and "static" ones. As all imported | |
10345 | declarations seem to be static in all other languages, make them all CU-wide | |
10346 | global only in Ada. */ | |
10347 | ||
10348 | static struct using_direct ** | |
804d2729 | 10349 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10350 | { |
c24bdb02 KS |
10351 | if (cu->language == language_ada |
10352 | && cu->get_builder ()->outermost_context_p ()) | |
10353 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10354 | else |
c24bdb02 | 10355 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10356 | } |
10357 | ||
27aa8d6a SW |
10358 | /* Read the import statement specified by the given die and record it. */ |
10359 | ||
10360 | static void | |
10361 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10362 | { | |
518817b3 | 10363 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
27aa8d6a | 10364 | struct attribute *import_attr; |
32019081 | 10365 | struct die_info *imported_die, *child_die; |
de4affc9 | 10366 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10367 | const char *imported_name; |
794684b6 | 10368 | const char *imported_name_prefix; |
13387711 SW |
10369 | const char *canonical_name; |
10370 | const char *import_alias; | |
10371 | const char *imported_declaration = NULL; | |
794684b6 | 10372 | const char *import_prefix; |
eb1e02fd | 10373 | std::vector<const char *> excludes; |
13387711 | 10374 | |
27aa8d6a SW |
10375 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10376 | if (import_attr == NULL) | |
10377 | { | |
b98664d3 | 10378 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10379 | dwarf_tag_name (die->tag)); |
10380 | return; | |
10381 | } | |
10382 | ||
de4affc9 CC |
10383 | imported_cu = cu; |
10384 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10385 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10386 | if (imported_name == NULL) |
10387 | { | |
10388 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10389 | ||
10390 | The import in the following code: | |
10391 | namespace A | |
10392 | { | |
10393 | typedef int B; | |
10394 | } | |
10395 | ||
10396 | int main () | |
10397 | { | |
10398 | using A::B; | |
10399 | B b; | |
10400 | return b; | |
10401 | } | |
10402 | ||
10403 | ... | |
10404 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
10405 | <52> DW_AT_decl_file : 1 | |
10406 | <53> DW_AT_decl_line : 6 | |
10407 | <54> DW_AT_import : <0x75> | |
10408 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
10409 | <59> DW_AT_name : B | |
10410 | <5b> DW_AT_decl_file : 1 | |
10411 | <5c> DW_AT_decl_line : 2 | |
10412 | <5d> DW_AT_type : <0x6e> | |
10413 | ... | |
10414 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
10415 | <76> DW_AT_byte_size : 4 | |
10416 | <77> DW_AT_encoding : 5 (signed) | |
10417 | ||
10418 | imports the wrong die ( 0x75 instead of 0x58 ). | |
10419 | This case will be ignored until the gcc bug is fixed. */ | |
10420 | return; | |
10421 | } | |
10422 | ||
82856980 SW |
10423 | /* Figure out the local name after import. */ |
10424 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 10425 | |
794684b6 SW |
10426 | /* Figure out where the statement is being imported to. */ |
10427 | import_prefix = determine_prefix (die, cu); | |
10428 | ||
10429 | /* Figure out what the scope of the imported die is and prepend it | |
10430 | to the name of the imported die. */ | |
de4affc9 | 10431 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 10432 | |
f55ee35c JK |
10433 | if (imported_die->tag != DW_TAG_namespace |
10434 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 10435 | { |
13387711 SW |
10436 | imported_declaration = imported_name; |
10437 | canonical_name = imported_name_prefix; | |
794684b6 | 10438 | } |
13387711 | 10439 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 10440 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
10441 | imported_name_prefix, |
10442 | (cu->language == language_d ? "." : "::"), | |
10443 | imported_name, (char *) NULL); | |
13387711 SW |
10444 | else |
10445 | canonical_name = imported_name; | |
794684b6 | 10446 | |
32019081 JK |
10447 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
10448 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 10449 | child_die = child_die->sibling) |
32019081 JK |
10450 | { |
10451 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
10452 | represented by an imported module entry with an import attribute | |
10453 | referring to the module and owned entries corresponding to those | |
10454 | entities that are renamed as part of being imported. */ | |
10455 | ||
10456 | if (child_die->tag != DW_TAG_imported_declaration) | |
10457 | { | |
b98664d3 | 10458 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
10459 | "- DIE at %s [in module %s]"), |
10460 | sect_offset_str (child_die->sect_off), | |
10461 | objfile_name (objfile)); | |
32019081 JK |
10462 | continue; |
10463 | } | |
10464 | ||
10465 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
10466 | if (import_attr == NULL) | |
10467 | { | |
b98664d3 | 10468 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
10469 | dwarf_tag_name (child_die->tag)); |
10470 | continue; | |
10471 | } | |
10472 | ||
10473 | imported_cu = cu; | |
10474 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
10475 | &imported_cu); | |
10476 | imported_name = dwarf2_name (imported_die, imported_cu); | |
10477 | if (imported_name == NULL) | |
10478 | { | |
b98664d3 | 10479 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
10480 | "imported name - DIE at %s [in module %s]"), |
10481 | sect_offset_str (child_die->sect_off), | |
10482 | objfile_name (objfile)); | |
32019081 JK |
10483 | continue; |
10484 | } | |
10485 | ||
eb1e02fd | 10486 | excludes.push_back (imported_name); |
32019081 JK |
10487 | |
10488 | process_die (child_die, cu); | |
10489 | } | |
10490 | ||
804d2729 | 10491 | add_using_directive (using_directives (cu), |
22cee43f PMR |
10492 | import_prefix, |
10493 | canonical_name, | |
10494 | import_alias, | |
10495 | imported_declaration, | |
10496 | excludes, | |
10497 | 0, | |
10498 | &objfile->objfile_obstack); | |
27aa8d6a SW |
10499 | } |
10500 | ||
5230b05a WT |
10501 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
10502 | types, but gives them a size of zero. Starting with version 14, | |
10503 | ICC is compatible with GCC. */ | |
10504 | ||
9068261f | 10505 | static bool |
5230b05a WT |
10506 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
10507 | { | |
10508 | if (!cu->checked_producer) | |
10509 | check_producer (cu); | |
10510 | ||
10511 | return cu->producer_is_icc_lt_14; | |
10512 | } | |
10513 | ||
eb77c9df AB |
10514 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
10515 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
10516 | which says that void functions should not have a DW_AT_type. */ | |
10517 | ||
10518 | static bool | |
10519 | producer_is_icc (struct dwarf2_cu *cu) | |
10520 | { | |
10521 | if (!cu->checked_producer) | |
10522 | check_producer (cu); | |
10523 | ||
10524 | return cu->producer_is_icc; | |
10525 | } | |
10526 | ||
1b80a9fa JK |
10527 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
10528 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
10529 | this, it was first present in GCC release 4.3.0. */ | |
10530 | ||
9068261f | 10531 | static bool |
1b80a9fa JK |
10532 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
10533 | { | |
10534 | if (!cu->checked_producer) | |
10535 | check_producer (cu); | |
10536 | ||
10537 | return cu->producer_is_gcc_lt_4_3; | |
10538 | } | |
10539 | ||
d721ba37 PA |
10540 | static file_and_directory |
10541 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 10542 | { |
d721ba37 PA |
10543 | file_and_directory res; |
10544 | ||
9291a0cd TT |
10545 | /* Find the filename. Do not use dwarf2_name here, since the filename |
10546 | is not a source language identifier. */ | |
d721ba37 PA |
10547 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
10548 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 10549 | |
d721ba37 PA |
10550 | if (res.comp_dir == NULL |
10551 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
10552 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 10553 | { |
d721ba37 PA |
10554 | res.comp_dir_storage = ldirname (res.name); |
10555 | if (!res.comp_dir_storage.empty ()) | |
10556 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 10557 | } |
d721ba37 | 10558 | if (res.comp_dir != NULL) |
9291a0cd TT |
10559 | { |
10560 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
10561 | directory, get rid of it. */ | |
d721ba37 | 10562 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 10563 | |
d721ba37 PA |
10564 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
10565 | res.comp_dir = cp + 1; | |
9291a0cd TT |
10566 | } |
10567 | ||
d721ba37 PA |
10568 | if (res.name == NULL) |
10569 | res.name = "<unknown>"; | |
10570 | ||
10571 | return res; | |
9291a0cd TT |
10572 | } |
10573 | ||
f4dc4d17 DE |
10574 | /* Handle DW_AT_stmt_list for a compilation unit. |
10575 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
10576 | COMP_DIR is the compilation directory. LOWPC is passed to |
10577 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
10578 | |
10579 | static void | |
10580 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 10581 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 10582 | { |
518817b3 SM |
10583 | struct dwarf2_per_objfile *dwarf2_per_objfile |
10584 | = cu->per_cu->dwarf2_per_objfile; | |
2ab95328 | 10585 | struct attribute *attr; |
527f3840 JK |
10586 | struct line_header line_header_local; |
10587 | hashval_t line_header_local_hash; | |
527f3840 JK |
10588 | void **slot; |
10589 | int decode_mapping; | |
2ab95328 | 10590 | |
f4dc4d17 DE |
10591 | gdb_assert (! cu->per_cu->is_debug_types); |
10592 | ||
2ab95328 | 10593 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
10594 | if (attr == NULL) |
10595 | return; | |
10596 | ||
9c541725 | 10597 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
10598 | |
10599 | /* The line header hash table is only created if needed (it exists to | |
10600 | prevent redundant reading of the line table for partial_units). | |
10601 | If we're given a partial_unit, we'll need it. If we're given a | |
10602 | compile_unit, then use the line header hash table if it's already | |
10603 | created, but don't create one just yet. */ | |
10604 | ||
10605 | if (dwarf2_per_objfile->line_header_hash == NULL | |
10606 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 10607 | { |
527f3840 | 10608 | dwarf2_per_objfile->line_header_hash |
d15acc42 TT |
10609 | .reset (htab_create_alloc (127, line_header_hash_voidp, |
10610 | line_header_eq_voidp, | |
10611 | free_line_header_voidp, | |
10612 | xcalloc, xfree)); | |
527f3840 | 10613 | } |
2ab95328 | 10614 | |
9c541725 | 10615 | line_header_local.sect_off = line_offset; |
527f3840 JK |
10616 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
10617 | line_header_local_hash = line_header_hash (&line_header_local); | |
10618 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
10619 | { | |
d15acc42 | 10620 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash.get (), |
527f3840 JK |
10621 | &line_header_local, |
10622 | line_header_local_hash, NO_INSERT); | |
10623 | ||
10624 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
10625 | is not present in *SLOT (since if there is something in *SLOT then | |
10626 | it will be for a partial_unit). */ | |
10627 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 10628 | { |
527f3840 | 10629 | gdb_assert (*slot != NULL); |
9a3c8263 | 10630 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 10631 | return; |
dee91e82 | 10632 | } |
2ab95328 | 10633 | } |
527f3840 JK |
10634 | |
10635 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
10636 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
10637 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
10638 | if (lh == NULL) | |
527f3840 | 10639 | return; |
4c8aa72d PA |
10640 | |
10641 | cu->line_header = lh.release (); | |
10642 | cu->line_header_die_owner = die; | |
527f3840 JK |
10643 | |
10644 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
10645 | slot = NULL; | |
10646 | else | |
10647 | { | |
d15acc42 | 10648 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash.get (), |
527f3840 JK |
10649 | &line_header_local, |
10650 | line_header_local_hash, INSERT); | |
10651 | gdb_assert (slot != NULL); | |
10652 | } | |
10653 | if (slot != NULL && *slot == NULL) | |
10654 | { | |
10655 | /* This newly decoded line number information unit will be owned | |
10656 | by line_header_hash hash table. */ | |
10657 | *slot = cu->line_header; | |
4c8aa72d | 10658 | cu->line_header_die_owner = NULL; |
527f3840 JK |
10659 | } |
10660 | else | |
10661 | { | |
10662 | /* We cannot free any current entry in (*slot) as that struct line_header | |
10663 | may be already used by multiple CUs. Create only temporary decoded | |
10664 | line_header for this CU - it may happen at most once for each line | |
10665 | number information unit. And if we're not using line_header_hash | |
10666 | then this is what we want as well. */ | |
10667 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
10668 | } |
10669 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
10670 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
10671 | decode_mapping); | |
fff8551c | 10672 | |
2ab95328 TT |
10673 | } |
10674 | ||
95554aad | 10675 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 10676 | |
c906108c | 10677 | static void |
e7c27a73 | 10678 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10679 | { |
518817b3 SM |
10680 | struct dwarf2_per_objfile *dwarf2_per_objfile |
10681 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 10682 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 10683 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2acceee2 | 10684 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
10685 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
10686 | struct attribute *attr; | |
c906108c | 10687 | struct die_info *child_die; |
e142c38c | 10688 | CORE_ADDR baseaddr; |
6e70227d | 10689 | |
380618d6 | 10690 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 10691 | baseaddr = objfile->text_section_offset (); |
c906108c | 10692 | |
fae299cd | 10693 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
10694 | |
10695 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
10696 | from finish_block. */ | |
2acceee2 | 10697 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 10698 | lowpc = highpc; |
3e29f34a | 10699 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 10700 | |
d721ba37 | 10701 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 10702 | |
f4b8a18d KW |
10703 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
10704 | standardised yet. As a workaround for the language detection we fall | |
10705 | back to the DW_AT_producer string. */ | |
10706 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
10707 | cu->language = language_opencl; | |
10708 | ||
3019eac3 DE |
10709 | /* Similar hack for Go. */ |
10710 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
10711 | set_cu_language (DW_LANG_Go, cu); | |
10712 | ||
c24bdb02 | 10713 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
10714 | |
10715 | /* Decode line number information if present. We do this before | |
10716 | processing child DIEs, so that the line header table is available | |
10717 | for DW_AT_decl_file. */ | |
d721ba37 | 10718 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
10719 | |
10720 | /* Process all dies in compilation unit. */ | |
10721 | if (die->child != NULL) | |
10722 | { | |
10723 | child_die = die->child; | |
10724 | while (child_die && child_die->tag) | |
10725 | { | |
10726 | process_die (child_die, cu); | |
436c571c | 10727 | child_die = child_die->sibling; |
3019eac3 DE |
10728 | } |
10729 | } | |
10730 | ||
10731 | /* Decode macro information, if present. Dwarf 2 macro information | |
10732 | refers to information in the line number info statement program | |
10733 | header, so we can only read it if we've read the header | |
10734 | successfully. */ | |
0af92d60 JK |
10735 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
10736 | if (attr == NULL) | |
10737 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
10738 | if (attr && cu->line_header) |
10739 | { | |
10740 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 10741 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 10742 | |
43f3e411 | 10743 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
10744 | } |
10745 | else | |
10746 | { | |
10747 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
10748 | if (attr && cu->line_header) | |
10749 | { | |
10750 | unsigned int macro_offset = DW_UNSND (attr); | |
10751 | ||
43f3e411 | 10752 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
10753 | } |
10754 | } | |
3019eac3 DE |
10755 | } |
10756 | ||
c24bdb02 KS |
10757 | void |
10758 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 10759 | { |
f4dc4d17 DE |
10760 | struct type_unit_group *tu_group; |
10761 | int first_time; | |
3019eac3 | 10762 | struct attribute *attr; |
9c541725 | 10763 | unsigned int i; |
0186c6a7 | 10764 | struct signatured_type *sig_type; |
3019eac3 | 10765 | |
f4dc4d17 | 10766 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 10767 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 10768 | |
c24bdb02 | 10769 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 10770 | |
f4dc4d17 | 10771 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 10772 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 10773 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 10774 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 10775 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
10776 | |
10777 | /* If we've already processed this stmt_list there's no real need to | |
10778 | do it again, we could fake it and just recreate the part we need | |
10779 | (file name,index -> symtab mapping). If data shows this optimization | |
10780 | is useful we can do it then. */ | |
43f3e411 | 10781 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
10782 | |
10783 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
10784 | debug info. */ | |
fff8551c | 10785 | line_header_up lh; |
f4dc4d17 | 10786 | if (attr != NULL) |
3019eac3 | 10787 | { |
9c541725 | 10788 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
c24bdb02 | 10789 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
10790 | } |
10791 | if (lh == NULL) | |
10792 | { | |
10793 | if (first_time) | |
c24bdb02 | 10794 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
10795 | else |
10796 | { | |
10797 | gdb_assert (tu_group->symtabs == NULL); | |
c24bdb02 | 10798 | gdb_assert (m_builder == nullptr); |
804d2729 | 10799 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
10800 | m_builder.reset (new struct buildsym_compunit |
10801 | (COMPUNIT_OBJFILE (cust), "", | |
10802 | COMPUNIT_DIRNAME (cust), | |
10803 | compunit_language (cust), | |
10804 | 0, cust)); | |
f4dc4d17 | 10805 | } |
f4dc4d17 | 10806 | return; |
3019eac3 DE |
10807 | } |
10808 | ||
c24bdb02 KS |
10809 | line_header = lh.release (); |
10810 | line_header_die_owner = die; | |
3019eac3 | 10811 | |
f4dc4d17 DE |
10812 | if (first_time) |
10813 | { | |
c24bdb02 | 10814 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 10815 | |
1fd60fc0 DE |
10816 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
10817 | still initializing it, and our caller (a few levels up) | |
10818 | process_full_type_unit still needs to know if this is the first | |
10819 | time. */ | |
10820 | ||
4ac93832 TT |
10821 | tu_group->symtabs |
10822 | = XOBNEWVEC (&COMPUNIT_OBJFILE (cust)->objfile_obstack, | |
10823 | struct symtab *, line_header->file_names_size ()); | |
3019eac3 | 10824 | |
7ba99d21 AT |
10825 | auto &file_names = line_header->file_names (); |
10826 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 10827 | { |
7ba99d21 | 10828 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
10829 | dwarf2_start_subfile (this, fe.name, |
10830 | fe.include_dir (line_header)); | |
10831 | buildsym_compunit *b = get_builder (); | |
10832 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 10833 | { |
4c8aa72d PA |
10834 | /* NOTE: start_subfile will recognize when it's been |
10835 | passed a file it has already seen. So we can't | |
10836 | assume there's a simple mapping from | |
10837 | cu->line_header->file_names to subfiles, plus | |
10838 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
10839 | b->get_current_subfile ()->symtab |
10840 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
10841 | } |
10842 | ||
c24bdb02 | 10843 | fe.symtab = b->get_current_subfile ()->symtab; |
8c43009f | 10844 | tu_group->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
10845 | } |
10846 | } | |
10847 | else | |
3019eac3 | 10848 | { |
c24bdb02 | 10849 | gdb_assert (m_builder == nullptr); |
804d2729 | 10850 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
10851 | m_builder.reset (new struct buildsym_compunit |
10852 | (COMPUNIT_OBJFILE (cust), "", | |
10853 | COMPUNIT_DIRNAME (cust), | |
10854 | compunit_language (cust), | |
10855 | 0, cust)); | |
f4dc4d17 | 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]; |
4c8aa72d | 10861 | fe.symtab = tu_group->symtabs[i]; |
f4dc4d17 | 10862 | } |
3019eac3 DE |
10863 | } |
10864 | ||
f4dc4d17 DE |
10865 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
10866 | so they don't have a "real" (so to speak) symtab anyway. | |
10867 | There is later code that will assign the main symtab to all symbols | |
10868 | that don't have one. We need to handle the case of a symbol with a | |
10869 | missing symtab (DW_AT_decl_file) anyway. */ | |
10870 | } | |
3019eac3 | 10871 | |
f4dc4d17 DE |
10872 | /* Process DW_TAG_type_unit. |
10873 | For TUs we want to skip the first top level sibling if it's not the | |
10874 | actual type being defined by this TU. In this case the first top | |
10875 | level sibling is there to provide context only. */ | |
3019eac3 | 10876 | |
f4dc4d17 DE |
10877 | static void |
10878 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
10879 | { | |
10880 | struct die_info *child_die; | |
3019eac3 | 10881 | |
f4dc4d17 DE |
10882 | prepare_one_comp_unit (cu, die, language_minimal); |
10883 | ||
10884 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
10885 | We do this before processing child DIEs, so that the line header table | |
10886 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 10887 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
10888 | |
10889 | if (die->child != NULL) | |
10890 | { | |
10891 | child_die = die->child; | |
10892 | while (child_die && child_die->tag) | |
10893 | { | |
10894 | process_die (child_die, cu); | |
436c571c | 10895 | child_die = child_die->sibling; |
f4dc4d17 DE |
10896 | } |
10897 | } | |
3019eac3 DE |
10898 | } |
10899 | \f | |
80626a55 DE |
10900 | /* DWO/DWP files. |
10901 | ||
10902 | http://gcc.gnu.org/wiki/DebugFission | |
10903 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
10904 | ||
10905 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
10906 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
10907 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
10908 | |
10909 | static hashval_t | |
10910 | hash_dwo_file (const void *item) | |
10911 | { | |
9a3c8263 | 10912 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 10913 | hashval_t hash; |
3019eac3 | 10914 | |
a2ce51a0 DE |
10915 | hash = htab_hash_string (dwo_file->dwo_name); |
10916 | if (dwo_file->comp_dir != NULL) | |
10917 | hash += htab_hash_string (dwo_file->comp_dir); | |
10918 | return hash; | |
3019eac3 DE |
10919 | } |
10920 | ||
10921 | static int | |
10922 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
10923 | { | |
9a3c8263 SM |
10924 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
10925 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 10926 | |
a2ce51a0 DE |
10927 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
10928 | return 0; | |
10929 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
10930 | return lhs->comp_dir == rhs->comp_dir; | |
10931 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
10932 | } |
10933 | ||
10934 | /* Allocate a hash table for DWO files. */ | |
10935 | ||
51ac9db5 | 10936 | static htab_up |
298e9637 | 10937 | allocate_dwo_file_hash_table () |
3019eac3 | 10938 | { |
51ac9db5 SM |
10939 | auto delete_dwo_file = [] (void *item) |
10940 | { | |
10941 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
10942 | ||
10943 | delete dwo_file; | |
10944 | }; | |
10945 | ||
bc68fb19 TT |
10946 | return htab_up (htab_create_alloc (41, |
10947 | hash_dwo_file, | |
10948 | eq_dwo_file, | |
10949 | delete_dwo_file, | |
10950 | xcalloc, xfree)); | |
3019eac3 DE |
10951 | } |
10952 | ||
80626a55 DE |
10953 | /* Lookup DWO file DWO_NAME. */ |
10954 | ||
10955 | static void ** | |
ed2dc618 SM |
10956 | lookup_dwo_file_slot (struct dwarf2_per_objfile *dwarf2_per_objfile, |
10957 | const char *dwo_name, | |
10958 | const char *comp_dir) | |
80626a55 DE |
10959 | { |
10960 | struct dwo_file find_entry; | |
10961 | void **slot; | |
10962 | ||
10963 | if (dwarf2_per_objfile->dwo_files == NULL) | |
298e9637 | 10964 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); |
80626a55 | 10965 | |
0ac5b59e DE |
10966 | find_entry.dwo_name = dwo_name; |
10967 | find_entry.comp_dir = comp_dir; | |
51ac9db5 SM |
10968 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files.get (), &find_entry, |
10969 | INSERT); | |
80626a55 DE |
10970 | |
10971 | return slot; | |
10972 | } | |
10973 | ||
3019eac3 DE |
10974 | static hashval_t |
10975 | hash_dwo_unit (const void *item) | |
10976 | { | |
9a3c8263 | 10977 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
10978 | |
10979 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
10980 | return dwo_unit->signature; | |
10981 | } | |
10982 | ||
10983 | static int | |
10984 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
10985 | { | |
9a3c8263 SM |
10986 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
10987 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
10988 | |
10989 | /* The signature is assumed to be unique within the DWO file. | |
10990 | So while object file CU dwo_id's always have the value zero, | |
10991 | that's OK, assuming each object file DWO file has only one CU, | |
10992 | and that's the rule for now. */ | |
10993 | return lhs->signature == rhs->signature; | |
10994 | } | |
10995 | ||
10996 | /* Allocate a hash table for DWO CUs,TUs. | |
10997 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
10998 | ||
b0b6a987 | 10999 | static htab_up |
298e9637 | 11000 | allocate_dwo_unit_table () |
3019eac3 DE |
11001 | { |
11002 | /* Start out with a pretty small number. | |
11003 | Generally DWO files contain only one CU and maybe some TUs. */ | |
b0b6a987 TT |
11004 | return htab_up (htab_create_alloc (3, |
11005 | hash_dwo_unit, | |
11006 | eq_dwo_unit, | |
11007 | NULL, xcalloc, xfree)); | |
3019eac3 DE |
11008 | } |
11009 | ||
19c3d4c9 | 11010 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11011 | |
11012 | static void | |
19c3d4c9 DE |
11013 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11014 | const gdb_byte *info_ptr, | |
11015 | struct die_info *comp_unit_die, | |
c0ab21c2 TT |
11016 | struct dwo_file *dwo_file, |
11017 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11018 | { |
11019 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11020 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11021 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11022 | |
a084a2a6 AT |
11023 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11024 | if (!signature.has_value ()) | |
3019eac3 | 11025 | { |
b98664d3 | 11026 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11027 | " its dwo_id [in module %s]"), |
9d8780f0 | 11028 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11029 | return; |
11030 | } | |
11031 | ||
3019eac3 | 11032 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11033 | dwo_unit->signature = *signature; |
8a0459fd | 11034 | dwo_unit->section = section; |
9c541725 | 11035 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11036 | dwo_unit->length = cu->per_cu->length; |
11037 | ||
b4f54984 | 11038 | if (dwarf_read_debug) |
9d8780f0 SM |
11039 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11040 | sect_offset_str (sect_off), | |
9c541725 | 11041 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11042 | } |
11043 | ||
33c5cd75 | 11044 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11045 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11046 | |
33c5cd75 | 11047 | static void |
ed2dc618 | 11048 | create_cus_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e | 11049 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
b0b6a987 | 11050 | dwarf2_section_info §ion, htab_up &cus_htab) |
3019eac3 DE |
11051 | { |
11052 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
d521ce57 | 11053 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11054 | |
96b79293 | 11055 | section.read (objfile); |
33c5cd75 | 11056 | info_ptr = section.buffer; |
3019eac3 DE |
11057 | |
11058 | if (info_ptr == NULL) | |
33c5cd75 | 11059 | return; |
3019eac3 | 11060 | |
b4f54984 | 11061 | if (dwarf_read_debug) |
19c3d4c9 DE |
11062 | { |
11063 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
96b79293 TT |
11064 | section.get_name (), |
11065 | section.get_file_name ()); | |
19c3d4c9 | 11066 | } |
3019eac3 | 11067 | |
33c5cd75 | 11068 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11069 | while (info_ptr < end_ptr) |
11070 | { | |
11071 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11072 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11073 | struct dwo_unit *dwo_unit; |
11074 | void **slot; | |
11075 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11076 | |
11077 | memset (&per_cu, 0, sizeof (per_cu)); | |
e3b94546 | 11078 | per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
3019eac3 | 11079 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11080 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11081 | per_cu.section = §ion; | |
11082 | ||
c0ab21c2 TT |
11083 | cutu_reader reader (&per_cu, cu, &dwo_file); |
11084 | if (!reader.dummy_p) | |
11085 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3e225074 | 11086 | &dwo_file, &read_unit); |
33c5cd75 DB |
11087 | info_ptr += per_cu.length; |
11088 | ||
11089 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11090 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11091 | continue; |
3019eac3 | 11092 | |
33c5cd75 | 11093 | if (cus_htab == NULL) |
298e9637 | 11094 | cus_htab = allocate_dwo_unit_table (); |
19c3d4c9 | 11095 | |
33c5cd75 | 11096 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); |
c0ab21c2 | 11097 | *dwo_unit = read_unit; |
b0b6a987 | 11098 | slot = htab_find_slot (cus_htab.get (), dwo_unit, INSERT); |
33c5cd75 DB |
11099 | gdb_assert (slot != NULL); |
11100 | if (*slot != NULL) | |
19c3d4c9 | 11101 | { |
33c5cd75 DB |
11102 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11103 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11104 | |
b98664d3 | 11105 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11106 | " the entry at offset %s, signature %s"), |
11107 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11108 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11109 | } |
33c5cd75 | 11110 | *slot = (void *)dwo_unit; |
3019eac3 | 11111 | } |
3019eac3 DE |
11112 | } |
11113 | ||
80626a55 DE |
11114 | /* DWP file .debug_{cu,tu}_index section format: |
11115 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
11116 | ||
d2415c6c DE |
11117 | DWP Version 1: |
11118 | ||
80626a55 DE |
11119 | Both index sections have the same format, and serve to map a 64-bit |
11120 | signature to a set of section numbers. Each section begins with a header, | |
11121 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11122 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11123 | aligned at 8-byte boundaries in the file. | |
11124 | ||
d2415c6c DE |
11125 | The index section header consists of: |
11126 | ||
11127 | V, 32 bit version number | |
11128 | -, 32 bits unused | |
11129 | N, 32 bit number of compilation units or type units in the index | |
11130 | M, 32 bit number of slots in the hash table | |
80626a55 | 11131 | |
d2415c6c | 11132 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11133 | |
d2415c6c DE |
11134 | The hash table begins at offset 16 in the section, and consists of an array |
11135 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11136 | order of the application binary). Unused slots in the hash table are 0. | |
11137 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11138 | |
d2415c6c DE |
11139 | The parallel table begins immediately after the hash table |
11140 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11141 | array of 32-bit indexes (using the byte order of the application binary), | |
11142 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11143 | table contains a 32-bit index into the pool of section numbers. For unused | |
11144 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11145 | |
73869dc2 DE |
11146 | The pool of section numbers begins immediately following the hash table |
11147 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11148 | section numbers consists of an array of 32-bit words (using the byte order | |
11149 | of the application binary). Each item in the array is indexed starting | |
11150 | from 0. The hash table entry provides the index of the first section | |
11151 | number in the set. Additional section numbers in the set follow, and the | |
11152 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11153 | ||
11154 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11155 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11156 | be the second entry. Other members of the set may follow in any order. | |
11157 | ||
11158 | --- | |
11159 | ||
11160 | DWP Version 2: | |
11161 | ||
11162 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
11163 | and the entries in the index tables are now offsets into these sections. | |
11164 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11165 | section. | |
11166 | ||
11167 | Index Section Contents: | |
11168 | Header | |
11169 | Hash Table of Signatures dwp_hash_table.hash_table | |
11170 | Parallel Table of Indices dwp_hash_table.unit_table | |
11171 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
11172 | Table of Section Sizes dwp_hash_table.v2.sizes | |
11173 | ||
11174 | The index section header consists of: | |
11175 | ||
11176 | V, 32 bit version number | |
11177 | L, 32 bit number of columns in the table of section offsets | |
11178 | N, 32 bit number of compilation units or type units in the index | |
11179 | M, 32 bit number of slots in the hash table | |
11180 | ||
11181 | Numbers are recorded using the byte order of the application binary. | |
11182 | ||
11183 | The hash table has the same format as version 1. | |
11184 | The parallel table of indices has the same format as version 1, | |
11185 | except that the entries are origin-1 indices into the table of sections | |
11186 | offsets and the table of section sizes. | |
11187 | ||
11188 | The table of offsets begins immediately following the parallel table | |
11189 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11190 | a two-dimensional array of 32-bit words (using the byte order of the | |
11191 | application binary), with L columns and N+1 rows, in row-major order. | |
11192 | Each row in the array is indexed starting from 0. The first row provides | |
11193 | a key to the remaining rows: each column in this row provides an identifier | |
11194 | for a debug section, and the offsets in the same column of subsequent rows | |
11195 | refer to that section. The section identifiers are: | |
11196 | ||
11197 | DW_SECT_INFO 1 .debug_info.dwo | |
11198 | DW_SECT_TYPES 2 .debug_types.dwo | |
11199 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11200 | DW_SECT_LINE 4 .debug_line.dwo | |
11201 | DW_SECT_LOC 5 .debug_loc.dwo | |
11202 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11203 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11204 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11205 | ||
11206 | The offsets provided by the CU and TU index sections are the base offsets | |
11207 | for the contributions made by each CU or TU to the corresponding section | |
11208 | in the package file. Each CU and TU header contains an abbrev_offset | |
11209 | field, used to find the abbreviations table for that CU or TU within the | |
11210 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11211 | be interpreted as relative to the base offset given in the index section. | |
11212 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11213 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11214 | and offsets into other debug sections obtained from DWARF attributes should | |
11215 | also be interpreted as relative to the corresponding base offset. | |
11216 | ||
11217 | The table of sizes begins immediately following the table of offsets. | |
11218 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11219 | with L columns and N rows, in row-major order. Each row in the array is | |
11220 | indexed starting from 1 (row 0 is shared by the two tables). | |
11221 | ||
11222 | --- | |
11223 | ||
11224 | Hash table lookup is handled the same in version 1 and 2: | |
11225 | ||
11226 | We assume that N and M will not exceed 2^32 - 1. | |
11227 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11228 | ||
d2415c6c DE |
11229 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11230 | in the hash table is located as follows: | |
80626a55 | 11231 | |
d2415c6c DE |
11232 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11233 | the low-order k bits all set to 1. | |
80626a55 | 11234 | |
d2415c6c | 11235 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11236 | |
d2415c6c DE |
11237 | 3) If the hash table entry at index H matches the signature, use that |
11238 | entry. If the hash table entry at index H is unused (all zeroes), | |
11239 | terminate the search: the signature is not present in the table. | |
80626a55 | 11240 | |
d2415c6c | 11241 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11242 | |
d2415c6c | 11243 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11244 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11245 | |
11246 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11247 | .debug_{info,types}.dwo in DWP_FILE. | |
11248 | Returns NULL if there isn't one. | |
11249 | Note: This function processes DWP files only, not DWO files. */ | |
11250 | ||
11251 | static struct dwp_hash_table * | |
ed2dc618 SM |
11252 | create_dwp_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11253 | struct dwp_file *dwp_file, int is_debug_types) | |
80626a55 DE |
11254 | { |
11255 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
400174b1 | 11256 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11257 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11258 | struct dwarf2_section_info *index; |
73869dc2 | 11259 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11260 | struct dwp_hash_table *htab; |
11261 | ||
11262 | if (is_debug_types) | |
11263 | index = &dwp_file->sections.tu_index; | |
11264 | else | |
11265 | index = &dwp_file->sections.cu_index; | |
11266 | ||
96b79293 | 11267 | if (index->empty ()) |
80626a55 | 11268 | return NULL; |
96b79293 | 11269 | index->read (objfile); |
80626a55 DE |
11270 | |
11271 | index_ptr = index->buffer; | |
11272 | index_end = index_ptr + index->size; | |
11273 | ||
11274 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
11275 | index_ptr += 4; |
11276 | if (version == 2) | |
11277 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
11278 | else | |
11279 | nr_columns = 0; | |
11280 | index_ptr += 4; | |
80626a55 DE |
11281 | nr_units = read_4_bytes (dbfd, index_ptr); |
11282 | index_ptr += 4; | |
11283 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11284 | index_ptr += 4; | |
11285 | ||
73869dc2 | 11286 | if (version != 1 && version != 2) |
80626a55 | 11287 | { |
21aa081e | 11288 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11289 | " [in module %s]"), |
21aa081e | 11290 | pulongest (version), dwp_file->name); |
80626a55 DE |
11291 | } |
11292 | if (nr_slots != (nr_slots & -nr_slots)) | |
11293 | { | |
21aa081e | 11294 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11295 | " is not power of 2 [in module %s]"), |
21aa081e | 11296 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11297 | } |
11298 | ||
11299 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
11300 | htab->version = version; |
11301 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11302 | htab->nr_units = nr_units; |
11303 | htab->nr_slots = nr_slots; | |
11304 | htab->hash_table = index_ptr; | |
11305 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11306 | |
11307 | /* Exit early if the table is empty. */ | |
11308 | if (nr_slots == 0 || nr_units == 0 | |
11309 | || (version == 2 && nr_columns == 0)) | |
11310 | { | |
11311 | /* All must be zero. */ | |
11312 | if (nr_slots != 0 || nr_units != 0 | |
11313 | || (version == 2 && nr_columns != 0)) | |
11314 | { | |
b98664d3 | 11315 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11316 | " all zero [in modules %s]"), |
11317 | dwp_file->name); | |
11318 | } | |
11319 | return htab; | |
11320 | } | |
11321 | ||
11322 | if (version == 1) | |
11323 | { | |
11324 | htab->section_pool.v1.indices = | |
11325 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11326 | /* It's harder to decide whether the section is too small in v1. | |
11327 | V1 is deprecated anyway so we punt. */ | |
11328 | } | |
11329 | else | |
11330 | { | |
11331 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11332 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11333 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11334 | /* Reverse map for error checking. */ |
11335 | int ids_seen[DW_SECT_MAX + 1]; | |
11336 | int i; | |
11337 | ||
11338 | if (nr_columns < 2) | |
11339 | { | |
11340 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11341 | " in section table [in module %s]"), | |
11342 | dwp_file->name); | |
11343 | } | |
11344 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11345 | { | |
11346 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11347 | " in section table [in module %s]"), | |
11348 | dwp_file->name); | |
11349 | } | |
04fd5eed GB |
11350 | memset (ids, 255, sizeof_ids); |
11351 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11352 | for (i = 0; i < nr_columns; ++i) |
11353 | { | |
11354 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11355 | ||
11356 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11357 | { | |
11358 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11359 | " in section table [in module %s]"), | |
11360 | id, dwp_file->name); | |
11361 | } | |
11362 | if (ids_seen[id] != -1) | |
11363 | { | |
11364 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11365 | " id %d in section table [in module %s]"), | |
11366 | id, dwp_file->name); | |
11367 | } | |
11368 | ids_seen[id] = i; | |
11369 | ids[i] = id; | |
11370 | } | |
11371 | /* Must have exactly one info or types section. */ | |
11372 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11373 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11374 | != 1) | |
11375 | { | |
11376 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11377 | " DWO info/types section [in module %s]"), | |
11378 | dwp_file->name); | |
11379 | } | |
11380 | /* Must have an abbrev section. */ | |
11381 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
11382 | { | |
11383 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11384 | " section [in module %s]"), | |
11385 | dwp_file->name); | |
11386 | } | |
11387 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11388 | htab->section_pool.v2.sizes = | |
11389 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
11390 | * nr_units * nr_columns); | |
11391 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
11392 | * nr_units * nr_columns)) | |
11393 | > index_end) | |
11394 | { | |
11395 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11396 | " [in module %s]"), | |
11397 | dwp_file->name); | |
11398 | } | |
11399 | } | |
80626a55 DE |
11400 | |
11401 | return htab; | |
11402 | } | |
11403 | ||
11404 | /* Update SECTIONS with the data from SECTP. | |
11405 | ||
11406 | This function is like the other "locate" section routines that are | |
11407 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 11408 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
11409 | |
11410 | The result is non-zero for success, or zero if an error was found. */ | |
11411 | ||
11412 | static int | |
73869dc2 DE |
11413 | locate_v1_virtual_dwo_sections (asection *sectp, |
11414 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
11415 | { |
11416 | const struct dwop_section_names *names = &dwop_section_names; | |
11417 | ||
11418 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
11419 | { | |
11420 | /* There can be only one. */ | |
049412e3 | 11421 | if (sections->abbrev.s.section != NULL) |
80626a55 | 11422 | return 0; |
049412e3 | 11423 | sections->abbrev.s.section = sectp; |
fd361982 | 11424 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
11425 | } |
11426 | else if (section_is_p (sectp->name, &names->info_dwo) | |
11427 | || section_is_p (sectp->name, &names->types_dwo)) | |
11428 | { | |
11429 | /* There can be only one. */ | |
049412e3 | 11430 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 11431 | return 0; |
049412e3 | 11432 | sections->info_or_types.s.section = sectp; |
fd361982 | 11433 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 DE |
11434 | } |
11435 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
11436 | { | |
11437 | /* There can be only one. */ | |
049412e3 | 11438 | if (sections->line.s.section != NULL) |
80626a55 | 11439 | return 0; |
049412e3 | 11440 | sections->line.s.section = sectp; |
fd361982 | 11441 | sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
11442 | } |
11443 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
11444 | { | |
11445 | /* There can be only one. */ | |
049412e3 | 11446 | if (sections->loc.s.section != NULL) |
80626a55 | 11447 | return 0; |
049412e3 | 11448 | sections->loc.s.section = sectp; |
fd361982 | 11449 | sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
11450 | } |
11451 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
11452 | { | |
11453 | /* There can be only one. */ | |
049412e3 | 11454 | if (sections->macinfo.s.section != NULL) |
80626a55 | 11455 | return 0; |
049412e3 | 11456 | sections->macinfo.s.section = sectp; |
fd361982 | 11457 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
11458 | } |
11459 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
11460 | { | |
11461 | /* There can be only one. */ | |
049412e3 | 11462 | if (sections->macro.s.section != NULL) |
80626a55 | 11463 | return 0; |
049412e3 | 11464 | sections->macro.s.section = sectp; |
fd361982 | 11465 | sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
11466 | } |
11467 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
11468 | { | |
11469 | /* There can be only one. */ | |
049412e3 | 11470 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 11471 | return 0; |
049412e3 | 11472 | sections->str_offsets.s.section = sectp; |
fd361982 | 11473 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
11474 | } |
11475 | else | |
11476 | { | |
11477 | /* No other kind of section is valid. */ | |
11478 | return 0; | |
11479 | } | |
11480 | ||
11481 | return 1; | |
11482 | } | |
11483 | ||
73869dc2 DE |
11484 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
11485 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11486 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11487 | This is for DWP version 1 files. */ | |
80626a55 DE |
11488 | |
11489 | static struct dwo_unit * | |
ed2dc618 SM |
11490 | create_dwo_unit_in_dwp_v1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11491 | struct dwp_file *dwp_file, | |
73869dc2 DE |
11492 | uint32_t unit_index, |
11493 | const char *comp_dir, | |
11494 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
11495 | { |
11496 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
11497 | const struct dwp_hash_table *dwp_htab = |
11498 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11499 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
11500 | const char *kind = is_debug_types ? "TU" : "CU"; |
11501 | struct dwo_file *dwo_file; | |
11502 | struct dwo_unit *dwo_unit; | |
73869dc2 | 11503 | struct virtual_v1_dwo_sections sections; |
80626a55 | 11504 | void **dwo_file_slot; |
80626a55 DE |
11505 | int i; |
11506 | ||
73869dc2 DE |
11507 | gdb_assert (dwp_file->version == 1); |
11508 | ||
b4f54984 | 11509 | if (dwarf_read_debug) |
80626a55 | 11510 | { |
73869dc2 | 11511 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 11512 | kind, |
73869dc2 | 11513 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
11514 | dwp_file->name); |
11515 | } | |
11516 | ||
19ac8c2e | 11517 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
11518 | Put a limit on the number of sections we look for so that bad data |
11519 | doesn't cause us to loop forever. */ | |
11520 | ||
73869dc2 | 11521 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
11522 | (1 /* .debug_info or .debug_types */ \ |
11523 | + 1 /* .debug_abbrev */ \ | |
11524 | + 1 /* .debug_line */ \ | |
11525 | + 1 /* .debug_loc */ \ | |
11526 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 11527 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
11528 | + 1 /* trailing zero */) |
11529 | ||
11530 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 11531 | |
73869dc2 | 11532 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
11533 | { |
11534 | asection *sectp; | |
11535 | uint32_t section_nr = | |
11536 | read_4_bytes (dbfd, | |
73869dc2 DE |
11537 | dwp_htab->section_pool.v1.indices |
11538 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
11539 | |
11540 | if (section_nr == 0) | |
11541 | break; | |
11542 | if (section_nr >= dwp_file->num_sections) | |
11543 | { | |
11544 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
11545 | " [in module %s]"), | |
11546 | dwp_file->name); | |
11547 | } | |
11548 | ||
11549 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 11550 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
11551 | { |
11552 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
11553 | " [in module %s]"), | |
11554 | dwp_file->name); | |
11555 | } | |
11556 | } | |
11557 | ||
11558 | if (i < 2 | |
96b79293 TT |
11559 | || sections.info_or_types.empty () |
11560 | || sections.abbrev.empty ()) | |
80626a55 DE |
11561 | { |
11562 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
11563 | " [in module %s]"), | |
11564 | dwp_file->name); | |
11565 | } | |
73869dc2 | 11566 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
11567 | { |
11568 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
11569 | " [in module %s]"), | |
11570 | dwp_file->name); | |
11571 | } | |
11572 | ||
11573 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
11574 | have dwo_unit "live" in that. At least for now. | |
11575 | ||
11576 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 11577 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
11578 | file, we can combine them back into a virtual DWO file to save space |
11579 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
11580 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
11581 | ||
791afaa2 TT |
11582 | std::string virtual_dwo_name = |
11583 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
11584 | sections.abbrev.get_id (), |
11585 | sections.line.get_id (), | |
11586 | sections.loc.get_id (), | |
11587 | sections.str_offsets.get_id ()); | |
80626a55 | 11588 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
11589 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
11590 | virtual_dwo_name.c_str (), | |
11591 | comp_dir); | |
80626a55 DE |
11592 | /* Create one if necessary. */ |
11593 | if (*dwo_file_slot == NULL) | |
11594 | { | |
b4f54984 | 11595 | if (dwarf_read_debug) |
80626a55 DE |
11596 | { |
11597 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 11598 | virtual_dwo_name.c_str ()); |
80626a55 | 11599 | } |
51ac9db5 | 11600 | dwo_file = new struct dwo_file; |
be1e3d3e | 11601 | dwo_file->dwo_name = objfile->intern (virtual_dwo_name); |
0ac5b59e | 11602 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
11603 | dwo_file->sections.abbrev = sections.abbrev; |
11604 | dwo_file->sections.line = sections.line; | |
11605 | dwo_file->sections.loc = sections.loc; | |
11606 | dwo_file->sections.macinfo = sections.macinfo; | |
11607 | dwo_file->sections.macro = sections.macro; | |
11608 | dwo_file->sections.str_offsets = sections.str_offsets; | |
11609 | /* The "str" section is global to the entire DWP file. */ | |
11610 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 11611 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
11612 | there's no need to record it in dwo_file. |
11613 | Also, we can't simply record type sections in dwo_file because | |
11614 | we record a pointer into the vector in dwo_unit. As we collect more | |
11615 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
11616 | for it, invalidating all copies of pointers into the previous |
11617 | contents. */ | |
80626a55 DE |
11618 | *dwo_file_slot = dwo_file; |
11619 | } | |
11620 | else | |
11621 | { | |
b4f54984 | 11622 | if (dwarf_read_debug) |
80626a55 DE |
11623 | { |
11624 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 11625 | virtual_dwo_name.c_str ()); |
80626a55 | 11626 | } |
9a3c8263 | 11627 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 11628 | } |
80626a55 DE |
11629 | |
11630 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
11631 | dwo_unit->dwo_file = dwo_file; | |
11632 | dwo_unit->signature = signature; | |
8d749320 SM |
11633 | dwo_unit->section = |
11634 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
8a0459fd | 11635 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 11636 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
11637 | |
11638 | return dwo_unit; | |
11639 | } | |
11640 | ||
73869dc2 DE |
11641 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
11642 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
11643 | piece within that section used by a TU/CU, return a virtual section | |
11644 | of just that piece. */ | |
11645 | ||
11646 | static struct dwarf2_section_info | |
ed2dc618 SM |
11647 | create_dwp_v2_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11648 | struct dwarf2_section_info *section, | |
73869dc2 DE |
11649 | bfd_size_type offset, bfd_size_type size) |
11650 | { | |
11651 | struct dwarf2_section_info result; | |
11652 | asection *sectp; | |
11653 | ||
11654 | gdb_assert (section != NULL); | |
11655 | gdb_assert (!section->is_virtual); | |
11656 | ||
11657 | memset (&result, 0, sizeof (result)); | |
11658 | result.s.containing_section = section; | |
dc4ccb6f | 11659 | result.is_virtual = true; |
73869dc2 DE |
11660 | |
11661 | if (size == 0) | |
11662 | return result; | |
11663 | ||
96b79293 | 11664 | sectp = section->get_bfd_section (); |
73869dc2 DE |
11665 | |
11666 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
11667 | bounds of the real section. This is a pretty-rare event, so just | |
11668 | flag an error (easier) instead of a warning and trying to cope. */ | |
11669 | if (sectp == NULL | |
fd361982 | 11670 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 11671 | { |
73869dc2 DE |
11672 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
11673 | " in section %s [in module %s]"), | |
fd361982 | 11674 | sectp ? bfd_section_name (sectp) : "<unknown>", |
73869dc2 DE |
11675 | objfile_name (dwarf2_per_objfile->objfile)); |
11676 | } | |
11677 | ||
11678 | result.virtual_offset = offset; | |
11679 | result.size = size; | |
11680 | return result; | |
11681 | } | |
11682 | ||
11683 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
11684 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11685 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11686 | This is for DWP version 2 files. */ | |
11687 | ||
11688 | static struct dwo_unit * | |
ed2dc618 SM |
11689 | create_dwo_unit_in_dwp_v2 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11690 | struct dwp_file *dwp_file, | |
73869dc2 DE |
11691 | uint32_t unit_index, |
11692 | const char *comp_dir, | |
11693 | ULONGEST signature, int is_debug_types) | |
11694 | { | |
11695 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
11696 | const struct dwp_hash_table *dwp_htab = | |
11697 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11698 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
11699 | const char *kind = is_debug_types ? "TU" : "CU"; |
11700 | struct dwo_file *dwo_file; | |
11701 | struct dwo_unit *dwo_unit; | |
11702 | struct virtual_v2_dwo_sections sections; | |
11703 | void **dwo_file_slot; | |
73869dc2 DE |
11704 | int i; |
11705 | ||
11706 | gdb_assert (dwp_file->version == 2); | |
11707 | ||
b4f54984 | 11708 | if (dwarf_read_debug) |
73869dc2 DE |
11709 | { |
11710 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
11711 | kind, | |
11712 | pulongest (unit_index), hex_string (signature), | |
11713 | dwp_file->name); | |
11714 | } | |
11715 | ||
11716 | /* Fetch the section offsets of this DWO unit. */ | |
11717 | ||
11718 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
11719 | |
11720 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
11721 | { | |
11722 | uint32_t offset = read_4_bytes (dbfd, | |
11723 | dwp_htab->section_pool.v2.offsets | |
11724 | + (((unit_index - 1) * dwp_htab->nr_columns | |
11725 | + i) | |
11726 | * sizeof (uint32_t))); | |
11727 | uint32_t size = read_4_bytes (dbfd, | |
11728 | dwp_htab->section_pool.v2.sizes | |
11729 | + (((unit_index - 1) * dwp_htab->nr_columns | |
11730 | + i) | |
11731 | * sizeof (uint32_t))); | |
11732 | ||
11733 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
11734 | { | |
11735 | case DW_SECT_INFO: | |
11736 | case DW_SECT_TYPES: | |
11737 | sections.info_or_types_offset = offset; | |
11738 | sections.info_or_types_size = size; | |
11739 | break; | |
11740 | case DW_SECT_ABBREV: | |
11741 | sections.abbrev_offset = offset; | |
11742 | sections.abbrev_size = size; | |
11743 | break; | |
11744 | case DW_SECT_LINE: | |
11745 | sections.line_offset = offset; | |
11746 | sections.line_size = size; | |
11747 | break; | |
11748 | case DW_SECT_LOC: | |
11749 | sections.loc_offset = offset; | |
11750 | sections.loc_size = size; | |
11751 | break; | |
11752 | case DW_SECT_STR_OFFSETS: | |
11753 | sections.str_offsets_offset = offset; | |
11754 | sections.str_offsets_size = size; | |
11755 | break; | |
11756 | case DW_SECT_MACINFO: | |
11757 | sections.macinfo_offset = offset; | |
11758 | sections.macinfo_size = size; | |
11759 | break; | |
11760 | case DW_SECT_MACRO: | |
11761 | sections.macro_offset = offset; | |
11762 | sections.macro_size = size; | |
11763 | break; | |
11764 | } | |
11765 | } | |
11766 | ||
11767 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
11768 | have dwo_unit "live" in that. At least for now. | |
11769 | ||
11770 | The DWP file can be made up of a random collection of CUs and TUs. | |
11771 | However, for each CU + set of TUs that came from the same original DWO | |
11772 | file, we can combine them back into a virtual DWO file to save space | |
11773 | (fewer struct dwo_file objects to allocate). Remember that for really | |
11774 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
11775 | ||
791afaa2 TT |
11776 | std::string virtual_dwo_name = |
11777 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
11778 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
11779 | (long) (sections.line_size ? sections.line_offset : 0), | |
11780 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
11781 | (long) (sections.str_offsets_size | |
11782 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 11783 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
11784 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
11785 | virtual_dwo_name.c_str (), | |
11786 | comp_dir); | |
73869dc2 DE |
11787 | /* Create one if necessary. */ |
11788 | if (*dwo_file_slot == NULL) | |
11789 | { | |
b4f54984 | 11790 | if (dwarf_read_debug) |
73869dc2 DE |
11791 | { |
11792 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 11793 | virtual_dwo_name.c_str ()); |
73869dc2 | 11794 | } |
51ac9db5 | 11795 | dwo_file = new struct dwo_file; |
be1e3d3e | 11796 | dwo_file->dwo_name = objfile->intern (virtual_dwo_name); |
73869dc2 DE |
11797 | dwo_file->comp_dir = comp_dir; |
11798 | dwo_file->sections.abbrev = | |
ed2dc618 | 11799 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
11800 | sections.abbrev_offset, sections.abbrev_size); |
11801 | dwo_file->sections.line = | |
ed2dc618 | 11802 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
11803 | sections.line_offset, sections.line_size); |
11804 | dwo_file->sections.loc = | |
ed2dc618 | 11805 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
11806 | sections.loc_offset, sections.loc_size); |
11807 | dwo_file->sections.macinfo = | |
ed2dc618 | 11808 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
11809 | sections.macinfo_offset, sections.macinfo_size); |
11810 | dwo_file->sections.macro = | |
ed2dc618 | 11811 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
11812 | sections.macro_offset, sections.macro_size); |
11813 | dwo_file->sections.str_offsets = | |
ed2dc618 SM |
11814 | create_dwp_v2_section (dwarf2_per_objfile, |
11815 | &dwp_file->sections.str_offsets, | |
73869dc2 DE |
11816 | sections.str_offsets_offset, |
11817 | sections.str_offsets_size); | |
11818 | /* The "str" section is global to the entire DWP file. */ | |
11819 | dwo_file->sections.str = dwp_file->sections.str; | |
11820 | /* The info or types section is assigned below to dwo_unit, | |
11821 | there's no need to record it in dwo_file. | |
11822 | Also, we can't simply record type sections in dwo_file because | |
11823 | we record a pointer into the vector in dwo_unit. As we collect more | |
11824 | types we'll grow the vector and eventually have to reallocate space | |
11825 | for it, invalidating all copies of pointers into the previous | |
11826 | contents. */ | |
11827 | *dwo_file_slot = dwo_file; | |
11828 | } | |
11829 | else | |
11830 | { | |
b4f54984 | 11831 | if (dwarf_read_debug) |
73869dc2 DE |
11832 | { |
11833 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 11834 | virtual_dwo_name.c_str ()); |
73869dc2 | 11835 | } |
9a3c8263 | 11836 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 11837 | } |
73869dc2 DE |
11838 | |
11839 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
11840 | dwo_unit->dwo_file = dwo_file; | |
11841 | dwo_unit->signature = signature; | |
8d749320 SM |
11842 | dwo_unit->section = |
11843 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
ed2dc618 SM |
11844 | *dwo_unit->section = create_dwp_v2_section (dwarf2_per_objfile, |
11845 | is_debug_types | |
73869dc2 DE |
11846 | ? &dwp_file->sections.types |
11847 | : &dwp_file->sections.info, | |
11848 | sections.info_or_types_offset, | |
11849 | sections.info_or_types_size); | |
11850 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
11851 | ||
11852 | return dwo_unit; | |
11853 | } | |
11854 | ||
57d63ce2 DE |
11855 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
11856 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
11857 | |
11858 | static struct dwo_unit * | |
ed2dc618 SM |
11859 | lookup_dwo_unit_in_dwp (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11860 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 11861 | ULONGEST signature, int is_debug_types) |
80626a55 | 11862 | { |
57d63ce2 DE |
11863 | const struct dwp_hash_table *dwp_htab = |
11864 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11865 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 11866 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
11867 | uint32_t hash = signature & mask; |
11868 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
11869 | unsigned int i; | |
11870 | void **slot; | |
870f88f7 | 11871 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
11872 | |
11873 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
11874 | find_dwo_cu.signature = signature; | |
19ac8c2e | 11875 | slot = htab_find_slot (is_debug_types |
48b490f2 TT |
11876 | ? dwp_file->loaded_tus.get () |
11877 | : dwp_file->loaded_cus.get (), | |
19ac8c2e | 11878 | &find_dwo_cu, INSERT); |
80626a55 DE |
11879 | |
11880 | if (*slot != NULL) | |
9a3c8263 | 11881 | return (struct dwo_unit *) *slot; |
80626a55 DE |
11882 | |
11883 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 11884 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
11885 | { |
11886 | ULONGEST signature_in_table; | |
11887 | ||
11888 | signature_in_table = | |
57d63ce2 | 11889 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
11890 | if (signature_in_table == signature) |
11891 | { | |
57d63ce2 DE |
11892 | uint32_t unit_index = |
11893 | read_4_bytes (dbfd, | |
11894 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 11895 | |
73869dc2 DE |
11896 | if (dwp_file->version == 1) |
11897 | { | |
ed2dc618 SM |
11898 | *slot = create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile, |
11899 | dwp_file, unit_index, | |
73869dc2 DE |
11900 | comp_dir, signature, |
11901 | is_debug_types); | |
11902 | } | |
11903 | else | |
11904 | { | |
ed2dc618 SM |
11905 | *slot = create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile, |
11906 | dwp_file, unit_index, | |
73869dc2 DE |
11907 | comp_dir, signature, |
11908 | is_debug_types); | |
11909 | } | |
9a3c8263 | 11910 | return (struct dwo_unit *) *slot; |
80626a55 DE |
11911 | } |
11912 | if (signature_in_table == 0) | |
11913 | return NULL; | |
11914 | hash = (hash + hash2) & mask; | |
11915 | } | |
11916 | ||
11917 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
11918 | " [in module %s]"), | |
11919 | dwp_file->name); | |
11920 | } | |
11921 | ||
ab5088bf | 11922 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
11923 | Open the file specified by FILE_NAME and hand it off to BFD for |
11924 | preliminary analysis. Return a newly initialized bfd *, which | |
11925 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 11926 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
11927 | SEARCH_CWD is true if the current directory is to be searched. |
11928 | It will be searched before debug-file-directory. | |
13aaf454 DE |
11929 | If successful, the file is added to the bfd include table of the |
11930 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 11931 | If unable to find/open the file, return NULL. |
3019eac3 DE |
11932 | NOTE: This function is derived from symfile_bfd_open. */ |
11933 | ||
192b62ce | 11934 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
11935 | try_open_dwop_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11936 | const char *file_name, int is_dwp, int search_cwd) | |
3019eac3 | 11937 | { |
24b9144d | 11938 | int desc; |
9c02c129 DE |
11939 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
11940 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
11941 | to debug_file_directory. */ | |
e0cc99a6 | 11942 | const char *search_path; |
9c02c129 DE |
11943 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
11944 | ||
e0cc99a6 | 11945 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
11946 | if (search_cwd) |
11947 | { | |
11948 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
11949 | { |
11950 | search_path_holder.reset (concat (".", dirname_separator_string, | |
11951 | debug_file_directory, | |
11952 | (char *) NULL)); | |
11953 | search_path = search_path_holder.get (); | |
11954 | } | |
6ac97d4c | 11955 | else |
e0cc99a6 | 11956 | search_path = "."; |
6ac97d4c | 11957 | } |
9c02c129 | 11958 | else |
e0cc99a6 | 11959 | search_path = debug_file_directory; |
3019eac3 | 11960 | |
24b9144d | 11961 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
11962 | if (is_dwp) |
11963 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
11964 | |
11965 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 11966 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
11967 | O_RDONLY | O_BINARY, &absolute_name); |
11968 | if (desc < 0) | |
11969 | return NULL; | |
11970 | ||
e0cc99a6 TT |
11971 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
11972 | gnutarget, desc)); | |
9c02c129 DE |
11973 | if (sym_bfd == NULL) |
11974 | return NULL; | |
192b62ce | 11975 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 11976 | |
192b62ce TT |
11977 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
11978 | return NULL; | |
3019eac3 | 11979 | |
13aaf454 DE |
11980 | /* Success. Record the bfd as having been included by the objfile's bfd. |
11981 | This is important because things like demangled_names_hash lives in the | |
11982 | objfile's per_bfd space and may have references to things like symbol | |
11983 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 11984 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 11985 | |
3019eac3 DE |
11986 | return sym_bfd; |
11987 | } | |
11988 | ||
ab5088bf | 11989 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
11990 | COMP_DIR is the DW_AT_comp_dir attribute. |
11991 | The result is the bfd handle of the file. | |
11992 | If there is a problem finding or opening the file, return NULL. | |
11993 | Upon success, the canonicalized path of the file is stored in the bfd, | |
11994 | same as symfile_bfd_open. */ | |
11995 | ||
192b62ce | 11996 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
11997 | open_dwo_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11998 | const char *file_name, const char *comp_dir) | |
3019eac3 | 11999 | { |
80626a55 | 12000 | if (IS_ABSOLUTE_PATH (file_name)) |
ed2dc618 SM |
12001 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12002 | 0 /*is_dwp*/, 0 /*search_cwd*/); | |
3019eac3 DE |
12003 | |
12004 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12005 | ||
12006 | if (comp_dir != NULL) | |
12007 | { | |
43816ebc TT |
12008 | gdb::unique_xmalloc_ptr<char> path_to_try |
12009 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12010 | |
12011 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12012 | search path, which seems useful. */ | |
ed2dc618 | 12013 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, |
43816ebc | 12014 | path_to_try.get (), |
ed2dc618 | 12015 | 0 /*is_dwp*/, |
192b62ce | 12016 | 1 /*search_cwd*/)); |
3019eac3 DE |
12017 | if (abfd != NULL) |
12018 | return abfd; | |
12019 | } | |
12020 | ||
12021 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12022 | is a list of paths. */ | |
12023 | ||
12024 | if (*debug_file_directory == '\0') | |
12025 | return NULL; | |
12026 | ||
ed2dc618 SM |
12027 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12028 | 0 /*is_dwp*/, 1 /*search_cwd*/); | |
3019eac3 DE |
12029 | } |
12030 | ||
80626a55 DE |
12031 | /* This function is mapped across the sections and remembers the offset and |
12032 | size of each of the DWO debugging sections we are interested in. */ | |
12033 | ||
12034 | static void | |
12035 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12036 | { | |
9a3c8263 | 12037 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12038 | const struct dwop_section_names *names = &dwop_section_names; |
12039 | ||
12040 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12041 | { | |
049412e3 | 12042 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12043 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12044 | } |
12045 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12046 | { | |
049412e3 | 12047 | dwo_sections->info.s.section = sectp; |
fd361982 | 12048 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 DE |
12049 | } |
12050 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12051 | { | |
049412e3 | 12052 | dwo_sections->line.s.section = sectp; |
fd361982 | 12053 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12054 | } |
12055 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12056 | { | |
049412e3 | 12057 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12058 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
12059 | } |
12060 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12061 | { | |
049412e3 | 12062 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12063 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12064 | } |
12065 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12066 | { | |
049412e3 | 12067 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12068 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
12069 | } |
12070 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
12071 | { | |
049412e3 | 12072 | dwo_sections->str.s.section = sectp; |
fd361982 | 12073 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 DE |
12074 | } |
12075 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12076 | { | |
049412e3 | 12077 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12078 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12079 | } |
12080 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12081 | { | |
12082 | struct dwarf2_section_info type_section; | |
12083 | ||
12084 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12085 | type_section.s.section = sectp; |
fd361982 | 12086 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12087 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12088 | } |
12089 | } | |
12090 | ||
ab5088bf | 12091 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12092 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12093 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12094 | |
12095 | static struct dwo_file * | |
0ac5b59e DE |
12096 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
12097 | const char *dwo_name, const char *comp_dir) | |
3019eac3 | 12098 | { |
ed2dc618 | 12099 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 12100 | |
fb1eb2f9 | 12101 | gdb_bfd_ref_ptr dbfd = open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12102 | if (dbfd == NULL) |
12103 | { | |
b4f54984 | 12104 | if (dwarf_read_debug) |
80626a55 DE |
12105 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12106 | return NULL; | |
12107 | } | |
263db9a1 | 12108 | |
51ac9db5 | 12109 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12110 | dwo_file->dwo_name = dwo_name; |
12111 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12112 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12113 | |
fb1eb2f9 | 12114 | bfd_map_over_sections (dwo_file->dbfd.get (), dwarf2_locate_dwo_sections, |
192b62ce | 12115 | &dwo_file->sections); |
3019eac3 | 12116 | |
18a8505e AT |
12117 | create_cus_hash_table (dwarf2_per_objfile, per_cu->cu, *dwo_file, |
12118 | dwo_file->sections.info, dwo_file->cus); | |
3019eac3 | 12119 | |
263db9a1 | 12120 | create_debug_types_hash_table (dwarf2_per_objfile, dwo_file.get (), |
ed2dc618 | 12121 | dwo_file->sections.types, dwo_file->tus); |
3019eac3 | 12122 | |
b4f54984 | 12123 | if (dwarf_read_debug) |
80626a55 DE |
12124 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
12125 | ||
263db9a1 | 12126 | return dwo_file.release (); |
3019eac3 DE |
12127 | } |
12128 | ||
80626a55 | 12129 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12130 | size of each of the DWP debugging sections common to version 1 and 2 that |
12131 | we are interested in. */ | |
3019eac3 | 12132 | |
80626a55 | 12133 | static void |
73869dc2 DE |
12134 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
12135 | void *dwp_file_ptr) | |
3019eac3 | 12136 | { |
9a3c8263 | 12137 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
12138 | const struct dwop_section_names *names = &dwop_section_names; |
12139 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12140 | |
80626a55 | 12141 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12142 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12143 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12144 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12145 | |
80626a55 DE |
12146 | /* Look for specific sections that we need. */ |
12147 | if (section_is_p (sectp->name, &names->str_dwo)) | |
12148 | { | |
049412e3 | 12149 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 12150 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 DE |
12151 | } |
12152 | else if (section_is_p (sectp->name, &names->cu_index)) | |
12153 | { | |
049412e3 | 12154 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 12155 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12156 | } |
12157 | else if (section_is_p (sectp->name, &names->tu_index)) | |
12158 | { | |
049412e3 | 12159 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 12160 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12161 | } |
12162 | } | |
3019eac3 | 12163 | |
73869dc2 DE |
12164 | /* This function is mapped across the sections and remembers the offset and |
12165 | size of each of the DWP version 2 debugging sections that we are interested | |
12166 | in. This is split into a separate function because we don't know if we | |
12167 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
12168 | ||
12169 | static void | |
12170 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12171 | { | |
9a3c8263 | 12172 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12173 | const struct dwop_section_names *names = &dwop_section_names; |
12174 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12175 | ||
12176 | /* Record the ELF section number for later lookup: this is what the | |
12177 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12178 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12179 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12180 | ||
12181 | /* Look for specific sections that we need. */ | |
12182 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12183 | { | |
049412e3 | 12184 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 12185 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 DE |
12186 | } |
12187 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12188 | { | |
049412e3 | 12189 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 12190 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 DE |
12191 | } |
12192 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12193 | { | |
049412e3 | 12194 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 12195 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 DE |
12196 | } |
12197 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12198 | { | |
049412e3 | 12199 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 12200 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 DE |
12201 | } |
12202 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12203 | { | |
049412e3 | 12204 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 12205 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 DE |
12206 | } |
12207 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12208 | { | |
049412e3 | 12209 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 12210 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 DE |
12211 | } |
12212 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12213 | { | |
049412e3 | 12214 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 12215 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 DE |
12216 | } |
12217 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12218 | { | |
049412e3 | 12219 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 12220 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
12221 | } |
12222 | } | |
12223 | ||
80626a55 | 12224 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12225 | |
80626a55 DE |
12226 | static hashval_t |
12227 | hash_dwp_loaded_cutus (const void *item) | |
12228 | { | |
9a3c8263 | 12229 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 12230 | |
80626a55 DE |
12231 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
12232 | return dwo_unit->signature; | |
3019eac3 DE |
12233 | } |
12234 | ||
80626a55 | 12235 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12236 | |
80626a55 DE |
12237 | static int |
12238 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 12239 | { |
9a3c8263 SM |
12240 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
12241 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 12242 | |
80626a55 DE |
12243 | return dua->signature == dub->signature; |
12244 | } | |
3019eac3 | 12245 | |
80626a55 | 12246 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12247 | |
48b490f2 | 12248 | static htab_up |
298e9637 | 12249 | allocate_dwp_loaded_cutus_table () |
80626a55 | 12250 | { |
48b490f2 TT |
12251 | return htab_up (htab_create_alloc (3, |
12252 | hash_dwp_loaded_cutus, | |
12253 | eq_dwp_loaded_cutus, | |
12254 | NULL, xcalloc, xfree)); | |
80626a55 | 12255 | } |
3019eac3 | 12256 | |
ab5088bf DE |
12257 | /* Try to open DWP file FILE_NAME. |
12258 | The result is the bfd handle of the file. | |
12259 | If there is a problem finding or opening the file, return NULL. | |
12260 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12261 | same as symfile_bfd_open. */ | |
12262 | ||
192b62ce | 12263 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12264 | open_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12265 | const char *file_name) | |
ab5088bf | 12266 | { |
ed2dc618 SM |
12267 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, file_name, |
12268 | 1 /*is_dwp*/, | |
192b62ce | 12269 | 1 /*search_cwd*/)); |
6ac97d4c DE |
12270 | if (abfd != NULL) |
12271 | return abfd; | |
12272 | ||
12273 | /* Work around upstream bug 15652. | |
12274 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
12275 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
12276 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
12277 | of the executable's path may have discarded the needed info. | |
12278 | [IWBN if the dwp file name was recorded in the executable, akin to | |
12279 | .gnu_debuglink, but that doesn't exist yet.] | |
12280 | Strip the directory from FILE_NAME and search again. */ | |
12281 | if (*debug_file_directory != '\0') | |
12282 | { | |
12283 | /* Don't implicitly search the current directory here. | |
12284 | If the user wants to search "." to handle this case, | |
12285 | it must be added to debug-file-directory. */ | |
ed2dc618 SM |
12286 | return try_open_dwop_file (dwarf2_per_objfile, |
12287 | lbasename (file_name), 1 /*is_dwp*/, | |
6ac97d4c DE |
12288 | 0 /*search_cwd*/); |
12289 | } | |
12290 | ||
12291 | return NULL; | |
ab5088bf DE |
12292 | } |
12293 | ||
80626a55 DE |
12294 | /* Initialize the use of the DWP file for the current objfile. |
12295 | By convention the name of the DWP file is ${objfile}.dwp. | |
12296 | The result is NULL if it can't be found. */ | |
a766d390 | 12297 | |
400174b1 | 12298 | static std::unique_ptr<struct dwp_file> |
ed2dc618 | 12299 | open_and_init_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
80626a55 DE |
12300 | { |
12301 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 | 12302 | |
82bf32bc JK |
12303 | /* Try to find first .dwp for the binary file before any symbolic links |
12304 | resolving. */ | |
6c447423 DE |
12305 | |
12306 | /* If the objfile is a debug file, find the name of the real binary | |
12307 | file and get the name of dwp file from there. */ | |
d721ba37 | 12308 | std::string dwp_name; |
6c447423 DE |
12309 | if (objfile->separate_debug_objfile_backlink != NULL) |
12310 | { | |
12311 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
12312 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 12313 | |
d721ba37 | 12314 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
12315 | } |
12316 | else | |
d721ba37 PA |
12317 | dwp_name = objfile->original_name; |
12318 | ||
12319 | dwp_name += ".dwp"; | |
80626a55 | 12320 | |
ed2dc618 | 12321 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
12322 | if (dbfd == NULL |
12323 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
12324 | { | |
12325 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
12326 | dwp_name = objfile_name (objfile); |
12327 | dwp_name += ".dwp"; | |
ed2dc618 | 12328 | dbfd = open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
12329 | } |
12330 | ||
80626a55 DE |
12331 | if (dbfd == NULL) |
12332 | { | |
b4f54984 | 12333 | if (dwarf_read_debug) |
d721ba37 | 12334 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
400174b1 | 12335 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 12336 | } |
400174b1 TT |
12337 | |
12338 | const char *name = bfd_get_filename (dbfd.get ()); | |
12339 | std::unique_ptr<struct dwp_file> dwp_file | |
12340 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 12341 | |
0a0f4c01 | 12342 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 DE |
12343 | dwp_file->elf_sections = |
12344 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
12345 | dwp_file->num_sections, asection *); | |
12346 | ||
400174b1 TT |
12347 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12348 | dwarf2_locate_common_dwp_sections, | |
12349 | dwp_file.get ()); | |
80626a55 | 12350 | |
400174b1 TT |
12351 | dwp_file->cus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
12352 | 0); | |
80626a55 | 12353 | |
400174b1 TT |
12354 | dwp_file->tus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
12355 | 1); | |
80626a55 | 12356 | |
73869dc2 | 12357 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
12358 | if (dwp_file->cus && dwp_file->tus |
12359 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
12360 | { |
12361 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 12362 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 12363 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
12364 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
12365 | " TU version %s [in DWP file %s]"), | |
12366 | pulongest (dwp_file->cus->version), | |
d721ba37 | 12367 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 12368 | } |
08302ed2 DE |
12369 | |
12370 | if (dwp_file->cus) | |
12371 | dwp_file->version = dwp_file->cus->version; | |
12372 | else if (dwp_file->tus) | |
12373 | dwp_file->version = dwp_file->tus->version; | |
12374 | else | |
12375 | dwp_file->version = 2; | |
73869dc2 DE |
12376 | |
12377 | if (dwp_file->version == 2) | |
400174b1 TT |
12378 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12379 | dwarf2_locate_v2_dwp_sections, | |
12380 | dwp_file.get ()); | |
73869dc2 | 12381 | |
298e9637 SM |
12382 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (); |
12383 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (); | |
80626a55 | 12384 | |
b4f54984 | 12385 | if (dwarf_read_debug) |
80626a55 DE |
12386 | { |
12387 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
12388 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
12389 | " %s CUs, %s TUs\n", |
12390 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
12391 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
12392 | } |
12393 | ||
12394 | return dwp_file; | |
3019eac3 | 12395 | } |
c906108c | 12396 | |
ab5088bf DE |
12397 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
12398 | ||
12399 | static struct dwp_file * | |
ed2dc618 | 12400 | get_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ab5088bf DE |
12401 | { |
12402 | if (! dwarf2_per_objfile->dwp_checked) | |
12403 | { | |
ed2dc618 SM |
12404 | dwarf2_per_objfile->dwp_file |
12405 | = open_and_init_dwp_file (dwarf2_per_objfile); | |
ab5088bf DE |
12406 | dwarf2_per_objfile->dwp_checked = 1; |
12407 | } | |
400174b1 | 12408 | return dwarf2_per_objfile->dwp_file.get (); |
ab5088bf DE |
12409 | } |
12410 | ||
80626a55 DE |
12411 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
12412 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
12413 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 12414 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
12415 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
12416 | ||
12417 | This is called, for example, when wanting to read a variable with a | |
12418 | complex location. Therefore we don't want to do file i/o for every call. | |
12419 | Therefore we don't want to look for a DWO file on every call. | |
12420 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
12421 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
12422 | for a DWO file. | |
12423 | ||
1c658ad5 | 12424 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 12425 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 12426 | |
3019eac3 | 12427 | static struct dwo_unit * |
80626a55 DE |
12428 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
12429 | const char *dwo_name, const char *comp_dir, | |
12430 | ULONGEST signature, int is_debug_types) | |
3019eac3 | 12431 | { |
ed2dc618 | 12432 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_unit->dwarf2_per_objfile; |
3019eac3 | 12433 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 DE |
12434 | const char *kind = is_debug_types ? "TU" : "CU"; |
12435 | void **dwo_file_slot; | |
3019eac3 | 12436 | struct dwo_file *dwo_file; |
80626a55 | 12437 | struct dwp_file *dwp_file; |
cb1df416 | 12438 | |
6a506a2d DE |
12439 | /* First see if there's a DWP file. |
12440 | If we have a DWP file but didn't find the DWO inside it, don't | |
12441 | look for the original DWO file. It makes gdb behave differently | |
12442 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 12443 | |
ed2dc618 | 12444 | dwp_file = get_dwp_file (dwarf2_per_objfile); |
80626a55 | 12445 | if (dwp_file != NULL) |
cf2c3c16 | 12446 | { |
80626a55 DE |
12447 | const struct dwp_hash_table *dwp_htab = |
12448 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12449 | ||
12450 | if (dwp_htab != NULL) | |
12451 | { | |
12452 | struct dwo_unit *dwo_cutu = | |
ed2dc618 | 12453 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, comp_dir, |
57d63ce2 | 12454 | signature, is_debug_types); |
80626a55 DE |
12455 | |
12456 | if (dwo_cutu != NULL) | |
12457 | { | |
b4f54984 | 12458 | if (dwarf_read_debug) |
80626a55 DE |
12459 | { |
12460 | fprintf_unfiltered (gdb_stdlog, | |
12461 | "Virtual DWO %s %s found: @%s\n", | |
12462 | kind, hex_string (signature), | |
12463 | host_address_to_string (dwo_cutu)); | |
12464 | } | |
12465 | return dwo_cutu; | |
12466 | } | |
12467 | } | |
12468 | } | |
6a506a2d | 12469 | else |
80626a55 | 12470 | { |
6a506a2d | 12471 | /* No DWP file, look for the DWO file. */ |
80626a55 | 12472 | |
ed2dc618 SM |
12473 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12474 | dwo_name, comp_dir); | |
6a506a2d | 12475 | if (*dwo_file_slot == NULL) |
80626a55 | 12476 | { |
6a506a2d DE |
12477 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
12478 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 12479 | } |
6a506a2d | 12480 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 12481 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 12482 | |
6a506a2d | 12483 | if (dwo_file != NULL) |
19c3d4c9 | 12484 | { |
6a506a2d DE |
12485 | struct dwo_unit *dwo_cutu = NULL; |
12486 | ||
12487 | if (is_debug_types && dwo_file->tus) | |
12488 | { | |
12489 | struct dwo_unit find_dwo_cutu; | |
12490 | ||
12491 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12492 | find_dwo_cutu.signature = signature; | |
9a3c8263 | 12493 | dwo_cutu |
b0b6a987 TT |
12494 | = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
12495 | &find_dwo_cutu); | |
6a506a2d | 12496 | } |
33c5cd75 | 12497 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 12498 | { |
33c5cd75 DB |
12499 | struct dwo_unit find_dwo_cutu; |
12500 | ||
12501 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12502 | find_dwo_cutu.signature = signature; | |
b0b6a987 | 12503 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus.get (), |
33c5cd75 | 12504 | &find_dwo_cutu); |
6a506a2d DE |
12505 | } |
12506 | ||
12507 | if (dwo_cutu != NULL) | |
12508 | { | |
b4f54984 | 12509 | if (dwarf_read_debug) |
6a506a2d DE |
12510 | { |
12511 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
12512 | kind, dwo_name, hex_string (signature), | |
12513 | host_address_to_string (dwo_cutu)); | |
12514 | } | |
12515 | return dwo_cutu; | |
80626a55 DE |
12516 | } |
12517 | } | |
2e276125 | 12518 | } |
9cdd5dbd | 12519 | |
80626a55 DE |
12520 | /* We didn't find it. This could mean a dwo_id mismatch, or |
12521 | someone deleted the DWO/DWP file, or the search path isn't set up | |
12522 | correctly to find the file. */ | |
12523 | ||
b4f54984 | 12524 | if (dwarf_read_debug) |
80626a55 DE |
12525 | { |
12526 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
12527 | kind, dwo_name, hex_string (signature)); | |
12528 | } | |
3019eac3 | 12529 | |
6656a72d DE |
12530 | /* This is a warning and not a complaint because it can be caused by |
12531 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
12532 | { |
12533 | /* Print the name of the DWP file if we looked there, helps the user | |
12534 | better diagnose the problem. */ | |
791afaa2 | 12535 | std::string dwp_text; |
43942612 DE |
12536 | |
12537 | if (dwp_file != NULL) | |
791afaa2 TT |
12538 | dwp_text = string_printf (" [in DWP file %s]", |
12539 | lbasename (dwp_file->name)); | |
43942612 | 12540 | |
9d8780f0 | 12541 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 DE |
12542 | " [in module %s]"), |
12543 | kind, dwo_name, hex_string (signature), | |
791afaa2 | 12544 | dwp_text.c_str (), |
43942612 | 12545 | this_unit->is_debug_types ? "TU" : "CU", |
9d8780f0 | 12546 | sect_offset_str (this_unit->sect_off), objfile_name (objfile)); |
43942612 | 12547 | } |
3019eac3 | 12548 | return NULL; |
5fb290d7 DJ |
12549 | } |
12550 | ||
80626a55 DE |
12551 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
12552 | See lookup_dwo_cutu_unit for details. */ | |
12553 | ||
12554 | static struct dwo_unit * | |
12555 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
12556 | const char *dwo_name, const char *comp_dir, | |
12557 | ULONGEST signature) | |
12558 | { | |
12559 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
12560 | } | |
12561 | ||
12562 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
12563 | See lookup_dwo_cutu_unit for details. */ | |
12564 | ||
12565 | static struct dwo_unit * | |
12566 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
12567 | const char *dwo_name, const char *comp_dir) | |
12568 | { | |
12569 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
12570 | } | |
12571 | ||
89e63ee4 DE |
12572 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
12573 | ||
12574 | static int | |
12575 | queue_and_load_dwo_tu (void **slot, void *info) | |
12576 | { | |
12577 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
12578 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
12579 | ULONGEST signature = dwo_unit->signature; | |
12580 | struct signatured_type *sig_type = | |
12581 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
12582 | ||
12583 | if (sig_type != NULL) | |
12584 | { | |
12585 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
12586 | ||
12587 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
12588 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
12589 | while processing PER_CU. */ | |
12590 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
12591 | load_full_type_unit (sig_cu); | |
ae640021 | 12592 | per_cu->imported_symtabs_push (sig_cu); |
89e63ee4 DE |
12593 | } |
12594 | ||
12595 | return 1; | |
12596 | } | |
12597 | ||
12598 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
12599 | The DWO may have the only definition of the type, though it may not be | |
12600 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
12601 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
12602 | ||
12603 | static void | |
12604 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
12605 | { | |
12606 | struct dwo_unit *dwo_unit; | |
12607 | struct dwo_file *dwo_file; | |
12608 | ||
12609 | gdb_assert (!per_cu->is_debug_types); | |
ed2dc618 | 12610 | gdb_assert (get_dwp_file (per_cu->dwarf2_per_objfile) == NULL); |
89e63ee4 DE |
12611 | gdb_assert (per_cu->cu != NULL); |
12612 | ||
12613 | dwo_unit = per_cu->cu->dwo_unit; | |
12614 | gdb_assert (dwo_unit != NULL); | |
12615 | ||
12616 | dwo_file = dwo_unit->dwo_file; | |
12617 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
12618 | htab_traverse_noresize (dwo_file->tus.get (), queue_and_load_dwo_tu, |
12619 | per_cu); | |
89e63ee4 DE |
12620 | } |
12621 | ||
3019eac3 | 12622 | /* Read in various DIEs. */ |
348e048f | 12623 | |
d389af10 | 12624 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
12625 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
12626 | already referenced by DW_AT_abstract_origin from the children of the | |
12627 | current DIE. */ | |
d389af10 JK |
12628 | |
12629 | static void | |
12630 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
12631 | { | |
12632 | struct die_info *child_die; | |
791afaa2 | 12633 | sect_offset *offsetp; |
d389af10 JK |
12634 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
12635 | struct die_info *origin_die; | |
12636 | /* Iterator of the ORIGIN_DIE children. */ | |
12637 | struct die_info *origin_child_die; | |
d389af10 | 12638 | struct attribute *attr; |
cd02d79d PA |
12639 | struct dwarf2_cu *origin_cu; |
12640 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
12641 | |
12642 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
12643 | if (!attr) | |
12644 | return; | |
12645 | ||
cd02d79d PA |
12646 | /* Note that following die references may follow to a die in a |
12647 | different cu. */ | |
12648 | ||
12649 | origin_cu = cu; | |
12650 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
12651 | ||
12652 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
12653 | symbols in. */ | |
12654 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
12655 | origin_cu->list_in_scope = cu->list_in_scope; | |
12656 | ||
edb3359d DJ |
12657 | if (die->tag != origin_die->tag |
12658 | && !(die->tag == DW_TAG_inlined_subroutine | |
12659 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 12660 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
12661 | sect_offset_str (die->sect_off), |
12662 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 12663 | |
791afaa2 | 12664 | std::vector<sect_offset> offsets; |
d389af10 | 12665 | |
3ea89b92 PMR |
12666 | for (child_die = die->child; |
12667 | child_die && child_die->tag; | |
436c571c | 12668 | child_die = child_die->sibling) |
3ea89b92 PMR |
12669 | { |
12670 | struct die_info *child_origin_die; | |
12671 | struct dwarf2_cu *child_origin_cu; | |
12672 | ||
12673 | /* We are trying to process concrete instance entries: | |
216f72a1 | 12674 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
12675 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
12676 | present in the abstract instance but not referenced in the concrete | |
12677 | one. */ | |
216f72a1 JK |
12678 | if (child_die->tag == DW_TAG_call_site |
12679 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
12680 | continue; |
12681 | ||
c38f313d DJ |
12682 | /* For each CHILD_DIE, find the corresponding child of |
12683 | ORIGIN_DIE. If there is more than one layer of | |
12684 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
12685 | but GCC versions at least through 4.4 generate this (GCC PR | |
12686 | 40573). */ | |
3ea89b92 PMR |
12687 | child_origin_die = child_die; |
12688 | child_origin_cu = cu; | |
c38f313d DJ |
12689 | while (1) |
12690 | { | |
cd02d79d PA |
12691 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
12692 | child_origin_cu); | |
c38f313d DJ |
12693 | if (attr == NULL) |
12694 | break; | |
cd02d79d PA |
12695 | child_origin_die = follow_die_ref (child_origin_die, attr, |
12696 | &child_origin_cu); | |
c38f313d DJ |
12697 | } |
12698 | ||
d389af10 JK |
12699 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
12700 | counterpart may exist. */ | |
c38f313d | 12701 | if (child_origin_die != child_die) |
d389af10 | 12702 | { |
edb3359d DJ |
12703 | if (child_die->tag != child_origin_die->tag |
12704 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
12705 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 12706 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 12707 | "different tags"), |
9d8780f0 SM |
12708 | sect_offset_str (child_die->sect_off), |
12709 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 12710 | if (child_origin_die->parent != origin_die) |
b98664d3 | 12711 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 12712 | "different parents"), |
9d8780f0 SM |
12713 | sect_offset_str (child_die->sect_off), |
12714 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 12715 | else |
791afaa2 | 12716 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 12717 | } |
d389af10 | 12718 | } |
791afaa2 TT |
12719 | std::sort (offsets.begin (), offsets.end ()); |
12720 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
12721 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 12722 | if (offsetp[-1] == *offsetp) |
b98664d3 | 12723 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
12724 | "to DIE %s as their abstract origin"), |
12725 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 12726 | |
791afaa2 | 12727 | offsetp = offsets.data (); |
d389af10 JK |
12728 | origin_child_die = origin_die->child; |
12729 | while (origin_child_die && origin_child_die->tag) | |
12730 | { | |
12731 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 12732 | while (offsetp < offsets_end |
9c541725 | 12733 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 12734 | offsetp++; |
b64f50a1 | 12735 | if (offsetp >= offsets_end |
9c541725 | 12736 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 12737 | { |
adde2bff DE |
12738 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
12739 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
12740 | This can happen with mutually referenced abstract_origins. | |
12741 | PR 16581. */ | |
12742 | if (!origin_child_die->in_process) | |
12743 | process_die (origin_child_die, origin_cu); | |
d389af10 | 12744 | } |
436c571c | 12745 | origin_child_die = origin_child_die->sibling; |
d389af10 | 12746 | } |
cd02d79d | 12747 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
12748 | |
12749 | if (cu != origin_cu) | |
12750 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
12751 | } |
12752 | ||
c906108c | 12753 | static void |
e7c27a73 | 12754 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12755 | { |
518817b3 | 12756 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 12757 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 12758 | struct context_stack *newobj; |
c906108c SS |
12759 | CORE_ADDR lowpc; |
12760 | CORE_ADDR highpc; | |
12761 | struct die_info *child_die; | |
edb3359d | 12762 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 12763 | const char *name; |
e142c38c | 12764 | CORE_ADDR baseaddr; |
801e3a5b | 12765 | struct block *block; |
edb3359d | 12766 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 12767 | std::vector<struct symbol *> template_args; |
34eaf542 | 12768 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
12769 | |
12770 | if (inlined_func) | |
12771 | { | |
12772 | /* If we do not have call site information, we can't show the | |
12773 | caller of this inlined function. That's too confusing, so | |
12774 | only use the scope for local variables. */ | |
12775 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
12776 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
12777 | if (call_line == NULL || call_file == NULL) | |
12778 | { | |
12779 | read_lexical_block_scope (die, cu); | |
12780 | return; | |
12781 | } | |
12782 | } | |
c906108c | 12783 | |
b3b3bada | 12784 | baseaddr = objfile->text_section_offset (); |
e142c38c | 12785 | |
94af9270 | 12786 | name = dwarf2_name (die, cu); |
c906108c | 12787 | |
e8d05480 JB |
12788 | /* Ignore functions with missing or empty names. These are actually |
12789 | illegal according to the DWARF standard. */ | |
12790 | if (name == NULL) | |
12791 | { | |
b98664d3 | 12792 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 12793 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
12794 | return; |
12795 | } | |
12796 | ||
12797 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 12798 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 12799 | <= PC_BOUNDS_INVALID) |
e8d05480 | 12800 | { |
ae4d0c03 PM |
12801 | attr = dwarf2_attr (die, DW_AT_external, cu); |
12802 | if (!attr || !DW_UNSND (attr)) | |
b98664d3 | 12803 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
12804 | "for subprogram DIE at %s"), |
12805 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
12806 | return; |
12807 | } | |
c906108c | 12808 | |
3e29f34a MR |
12809 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
12810 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 12811 | |
34eaf542 TT |
12812 | /* If we have any template arguments, then we must allocate a |
12813 | different sort of symbol. */ | |
436c571c | 12814 | for (child_die = die->child; child_die; child_die = child_die->sibling) |
34eaf542 TT |
12815 | { |
12816 | if (child_die->tag == DW_TAG_template_type_param | |
12817 | || child_die->tag == DW_TAG_template_value_param) | |
12818 | { | |
e623cf5d | 12819 | templ_func = allocate_template_symbol (objfile); |
cf724bc9 | 12820 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
12821 | break; |
12822 | } | |
12823 | } | |
12824 | ||
c24bdb02 | 12825 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
12826 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
12827 | (struct symbol *) templ_func); | |
4c2df51b | 12828 | |
81873cc8 | 12829 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 12830 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
12831 | cu->language); |
12832 | ||
4cecd739 DJ |
12833 | /* If there is a location expression for DW_AT_frame_base, record |
12834 | it. */ | |
e142c38c | 12835 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 12836 | if (attr != nullptr) |
fe978cb0 | 12837 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 12838 | |
63e43d3a PMR |
12839 | /* If there is a location for the static link, record it. */ |
12840 | newobj->static_link = NULL; | |
12841 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 12842 | if (attr != nullptr) |
63e43d3a | 12843 | { |
224c3ddb SM |
12844 | newobj->static_link |
12845 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d | 12846 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
09ba997f | 12847 | cu->per_cu->addr_type ()); |
63e43d3a PMR |
12848 | } |
12849 | ||
c24bdb02 | 12850 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 12851 | |
639d11d3 | 12852 | if (die->child != NULL) |
c906108c | 12853 | { |
639d11d3 | 12854 | child_die = die->child; |
c906108c SS |
12855 | while (child_die && child_die->tag) |
12856 | { | |
34eaf542 TT |
12857 | if (child_die->tag == DW_TAG_template_type_param |
12858 | || child_die->tag == DW_TAG_template_value_param) | |
12859 | { | |
12860 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
12861 | ||
f1078f66 | 12862 | if (arg != NULL) |
2f4732b0 | 12863 | template_args.push_back (arg); |
34eaf542 TT |
12864 | } |
12865 | else | |
12866 | process_die (child_die, cu); | |
436c571c | 12867 | child_die = child_die->sibling; |
c906108c SS |
12868 | } |
12869 | } | |
12870 | ||
d389af10 JK |
12871 | inherit_abstract_dies (die, cu); |
12872 | ||
4a811a97 UW |
12873 | /* If we have a DW_AT_specification, we might need to import using |
12874 | directives from the context of the specification DIE. See the | |
12875 | comment in determine_prefix. */ | |
12876 | if (cu->language == language_cplus | |
12877 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
12878 | { | |
12879 | struct dwarf2_cu *spec_cu = cu; | |
12880 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
12881 | ||
12882 | while (spec_die) | |
12883 | { | |
12884 | child_die = spec_die->child; | |
12885 | while (child_die && child_die->tag) | |
12886 | { | |
12887 | if (child_die->tag == DW_TAG_imported_module) | |
12888 | process_die (child_die, spec_cu); | |
436c571c | 12889 | child_die = child_die->sibling; |
4a811a97 UW |
12890 | } |
12891 | ||
12892 | /* In some cases, GCC generates specification DIEs that | |
12893 | themselves contain DW_AT_specification attributes. */ | |
12894 | spec_die = die_specification (spec_die, &spec_cu); | |
12895 | } | |
12896 | } | |
12897 | ||
c24bdb02 | 12898 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 12899 | /* Make a block for the local symbols within. */ |
c24bdb02 | 12900 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 12901 | cstk.static_link, lowpc, highpc); |
801e3a5b | 12902 | |
df8a16a1 | 12903 | /* For C++, set the block's scope. */ |
45280282 IB |
12904 | if ((cu->language == language_cplus |
12905 | || cu->language == language_fortran | |
c44af4eb TT |
12906 | || cu->language == language_d |
12907 | || cu->language == language_rust) | |
4d4ec4e5 | 12908 | && cu->processing_has_namespace_info) |
195a3f6c TT |
12909 | block_set_scope (block, determine_prefix (die, cu), |
12910 | &objfile->objfile_obstack); | |
df8a16a1 | 12911 | |
801e3a5b JB |
12912 | /* If we have address ranges, record them. */ |
12913 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 12914 | |
a60f3166 | 12915 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 12916 | |
34eaf542 | 12917 | /* Attach template arguments to function. */ |
2f4732b0 | 12918 | if (!template_args.empty ()) |
34eaf542 TT |
12919 | { |
12920 | gdb_assert (templ_func != NULL); | |
12921 | ||
2f4732b0 | 12922 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 12923 | templ_func->template_arguments |
8d749320 SM |
12924 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
12925 | templ_func->n_template_arguments); | |
34eaf542 | 12926 | memcpy (templ_func->template_arguments, |
2f4732b0 | 12927 | template_args.data (), |
34eaf542 | 12928 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
12929 | |
12930 | /* Make sure that the symtab is set on the new symbols. Even | |
12931 | though they don't appear in this symtab directly, other parts | |
12932 | of gdb assume that symbols do, and this is reasonably | |
12933 | true. */ | |
8634679f | 12934 | for (symbol *sym : template_args) |
3e1d3d8c | 12935 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
12936 | } |
12937 | ||
208d8187 JB |
12938 | /* In C++, we can have functions nested inside functions (e.g., when |
12939 | a function declares a class that has methods). This means that | |
12940 | when we finish processing a function scope, we may need to go | |
12941 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
12942 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
12943 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 12944 | |
921e78cf JB |
12945 | /* If we've finished processing a top-level function, subsequent |
12946 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
12947 | if (cu->get_builder ()->outermost_context_p ()) |
12948 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
12949 | } |
12950 | ||
12951 | /* Process all the DIES contained within a lexical block scope. Start | |
12952 | a new scope, process the dies, and then close the scope. */ | |
12953 | ||
12954 | static void | |
e7c27a73 | 12955 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12956 | { |
518817b3 | 12957 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 12958 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
12959 | CORE_ADDR lowpc, highpc; |
12960 | struct die_info *child_die; | |
e142c38c DJ |
12961 | CORE_ADDR baseaddr; |
12962 | ||
b3b3bada | 12963 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
12964 | |
12965 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
12966 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
12967 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 12968 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 12969 | describe ranges. */ |
e385593e JK |
12970 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
12971 | { | |
12972 | case PC_BOUNDS_NOT_PRESENT: | |
12973 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
12974 | there was no wrapping by that DW_TAG_lexical_block. | |
12975 | GCC does no longer produces such DWARF since GCC r224161. */ | |
12976 | for (child_die = die->child; | |
12977 | child_die != NULL && child_die->tag; | |
436c571c | 12978 | child_die = child_die->sibling) |
e385593e JK |
12979 | process_die (child_die, cu); |
12980 | return; | |
12981 | case PC_BOUNDS_INVALID: | |
12982 | return; | |
12983 | } | |
3e29f34a MR |
12984 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
12985 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 12986 | |
c24bdb02 | 12987 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 12988 | if (die->child != NULL) |
c906108c | 12989 | { |
639d11d3 | 12990 | child_die = die->child; |
c906108c SS |
12991 | while (child_die && child_die->tag) |
12992 | { | |
e7c27a73 | 12993 | process_die (child_die, cu); |
436c571c | 12994 | child_die = child_die->sibling; |
c906108c SS |
12995 | } |
12996 | } | |
3ea89b92 | 12997 | inherit_abstract_dies (die, cu); |
c24bdb02 | 12998 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 12999 | |
c24bdb02 KS |
13000 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13001 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13002 | { |
801e3a5b | 13003 | struct block *block |
c24bdb02 | 13004 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13005 | cstk.start_addr, highpc); |
801e3a5b JB |
13006 | |
13007 | /* Note that recording ranges after traversing children, as we | |
13008 | do here, means that recording a parent's ranges entails | |
13009 | walking across all its children's ranges as they appear in | |
13010 | the address map, which is quadratic behavior. | |
13011 | ||
13012 | It would be nicer to record the parent's ranges before | |
13013 | traversing its children, simply overriding whatever you find | |
13014 | there. But since we don't even decide whether to create a | |
13015 | block until after we've traversed its children, that's hard | |
13016 | to do. */ | |
13017 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13018 | } |
c24bdb02 KS |
13019 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13020 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13021 | } |
13022 | ||
216f72a1 | 13023 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13024 | |
13025 | static void | |
13026 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13027 | { | |
518817b3 | 13028 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
96408a79 SA |
13029 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
13030 | CORE_ADDR pc, baseaddr; | |
13031 | struct attribute *attr; | |
13032 | struct call_site *call_site, call_site_local; | |
13033 | void **slot; | |
13034 | int nparams; | |
13035 | struct die_info *child_die; | |
13036 | ||
b3b3bada | 13037 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13038 | |
216f72a1 JK |
13039 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13040 | if (attr == NULL) | |
13041 | { | |
13042 | /* This was a pre-DWARF-5 GNU extension alias | |
13043 | for DW_AT_call_return_pc. */ | |
13044 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13045 | } | |
96408a79 SA |
13046 | if (!attr) |
13047 | { | |
b98664d3 | 13048 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13049 | "DIE %s [in module %s]"), |
13050 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13051 | return; |
13052 | } | |
cd6c91b4 | 13053 | pc = attr->value_as_address () + baseaddr; |
3e29f34a | 13054 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13055 | |
13056 | if (cu->call_site_htab == NULL) | |
13057 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13058 | NULL, &objfile->objfile_obstack, | |
13059 | hashtab_obstack_allocate, NULL); | |
13060 | call_site_local.pc = pc; | |
13061 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13062 | if (*slot != NULL) | |
13063 | { | |
b98664d3 | 13064 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13065 | "DIE %s [in module %s]"), |
13066 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13067 | objfile_name (objfile)); |
96408a79 SA |
13068 | return; |
13069 | } | |
13070 | ||
13071 | /* Count parameters at the caller. */ | |
13072 | ||
13073 | nparams = 0; | |
13074 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 13075 | child_die = child_die->sibling) |
96408a79 | 13076 | { |
216f72a1 JK |
13077 | if (child_die->tag != DW_TAG_call_site_parameter |
13078 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 | 13079 | { |
b98664d3 | 13080 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13081 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13082 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13083 | objfile_name (objfile)); |
96408a79 SA |
13084 | continue; |
13085 | } | |
13086 | ||
13087 | nparams++; | |
13088 | } | |
13089 | ||
224c3ddb SM |
13090 | call_site |
13091 | = ((struct call_site *) | |
13092 | obstack_alloc (&objfile->objfile_obstack, | |
13093 | sizeof (*call_site) | |
13094 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13095 | *slot = call_site; |
13096 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13097 | call_site->pc = pc; | |
13098 | ||
216f72a1 JK |
13099 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13100 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13101 | { |
13102 | struct die_info *func_die; | |
13103 | ||
13104 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13105 | for (func_die = die->parent; | |
13106 | func_die && func_die->tag != DW_TAG_subprogram | |
13107 | && func_die->tag != DW_TAG_subroutine_type; | |
13108 | func_die = func_die->parent); | |
13109 | ||
216f72a1 JK |
13110 | /* DW_AT_call_all_calls is a superset |
13111 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13112 | if (func_die |
216f72a1 | 13113 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 13114 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 13115 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13116 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13117 | { | |
13118 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13119 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13120 | both the initial caller containing the real return address PC and | |
13121 | the final callee containing the current PC of a chain of tail | |
13122 | calls do not need to have the tail call list complete. But any | |
13123 | function candidate for a virtual tail call frame searched via | |
13124 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13125 | determined unambiguously. */ | |
13126 | } | |
13127 | else | |
13128 | { | |
13129 | struct type *func_type = NULL; | |
13130 | ||
13131 | if (func_die) | |
13132 | func_type = get_die_type (func_die, cu); | |
13133 | if (func_type != NULL) | |
13134 | { | |
13135 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
13136 | ||
13137 | /* Enlist this call site to the function. */ | |
13138 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13139 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13140 | } | |
13141 | else | |
b98664d3 | 13142 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13143 | "DIE %s [in module %s]"), |
13144 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13145 | } |
13146 | } | |
13147 | ||
216f72a1 JK |
13148 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13149 | if (attr == NULL) | |
13150 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
13151 | if (attr == NULL) | |
13152 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 13153 | if (attr == NULL) |
216f72a1 JK |
13154 | { |
13155 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
13156 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13157 | } | |
96408a79 | 13158 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
4fc6c0d5 | 13159 | if (!attr || (attr->form_is_block () && DW_BLOCK (attr)->size == 0)) |
96408a79 | 13160 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 13161 | else if (attr->form_is_block ()) |
96408a79 SA |
13162 | { |
13163 | struct dwarf2_locexpr_baton *dlbaton; | |
13164 | ||
8d749320 | 13165 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
13166 | dlbaton->data = DW_BLOCK (attr)->data; |
13167 | dlbaton->size = DW_BLOCK (attr)->size; | |
13168 | dlbaton->per_cu = cu->per_cu; | |
13169 | ||
13170 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
13171 | } | |
cd6c91b4 | 13172 | else if (attr->form_is_ref ()) |
96408a79 | 13173 | { |
96408a79 SA |
13174 | struct dwarf2_cu *target_cu = cu; |
13175 | struct die_info *target_die; | |
13176 | ||
ac9ec31b | 13177 | target_die = follow_die_ref (die, attr, &target_cu); |
518817b3 | 13178 | gdb_assert (target_cu->per_cu->dwarf2_per_objfile->objfile == objfile); |
96408a79 SA |
13179 | if (die_is_declaration (target_die, target_cu)) |
13180 | { | |
7d45c7c3 | 13181 | const char *target_physname; |
9112db09 JK |
13182 | |
13183 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 13184 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 13185 | if (target_physname == NULL) |
9112db09 | 13186 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 13187 | if (target_physname == NULL) |
b98664d3 | 13188 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13189 | "physname, for referencing DIE %s [in module %s]"), |
13190 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13191 | else |
7d455152 | 13192 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
13193 | } |
13194 | else | |
13195 | { | |
13196 | CORE_ADDR lowpc; | |
13197 | ||
13198 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 13199 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 13200 | <= PC_BOUNDS_INVALID) |
b98664d3 | 13201 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13202 | "low pc, for referencing DIE %s [in module %s]"), |
13203 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13204 | else |
3e29f34a MR |
13205 | { |
13206 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
13207 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
13208 | } | |
96408a79 SA |
13209 | } |
13210 | } | |
13211 | else | |
b98664d3 | 13212 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
13213 | "block nor reference, for DIE %s [in module %s]"), |
13214 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13215 | |
13216 | call_site->per_cu = cu->per_cu; | |
13217 | ||
13218 | for (child_die = die->child; | |
13219 | child_die && child_die->tag; | |
436c571c | 13220 | child_die = child_die->sibling) |
96408a79 | 13221 | { |
96408a79 | 13222 | struct call_site_parameter *parameter; |
1788b2d3 | 13223 | struct attribute *loc, *origin; |
96408a79 | 13224 | |
216f72a1 JK |
13225 | if (child_die->tag != DW_TAG_call_site_parameter |
13226 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
13227 | { |
13228 | /* Already printed the complaint above. */ | |
13229 | continue; | |
13230 | } | |
13231 | ||
13232 | gdb_assert (call_site->parameter_count < nparams); | |
13233 | parameter = &call_site->parameter[call_site->parameter_count]; | |
13234 | ||
1788b2d3 JK |
13235 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
13236 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 13237 | register is contained in DW_AT_call_value. */ |
96408a79 | 13238 | |
24c5c679 | 13239 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
13240 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
13241 | if (origin == NULL) | |
13242 | { | |
13243 | /* This was a pre-DWARF-5 GNU extension alias | |
13244 | for DW_AT_call_parameter. */ | |
13245 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
13246 | } | |
cd6c91b4 | 13247 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 13248 | { |
1788b2d3 | 13249 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 | 13250 | |
0826b30a | 13251 | sect_offset sect_off = origin->get_ref_die_offset (); |
4057dfde | 13252 | if (!cu->header.offset_in_cu_p (sect_off)) |
d76b7dbc JK |
13253 | { |
13254 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
13255 | binding can be done only inside one CU. Such referenced DIE | |
13256 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 13257 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
13258 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13259 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13260 | objfile_name (objfile)); |
d76b7dbc JK |
13261 | continue; |
13262 | } | |
9c541725 PA |
13263 | parameter->u.param_cu_off |
13264 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 13265 | } |
4fc6c0d5 | 13266 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 13267 | { |
b98664d3 | 13268 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
13269 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13270 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13271 | continue; |
13272 | } | |
24c5c679 | 13273 | else |
96408a79 | 13274 | { |
24c5c679 JK |
13275 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
13276 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
13277 | if (parameter->u.dwarf_reg != -1) | |
13278 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
13279 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
13280 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
13281 | ¶meter->u.fb_offset)) | |
13282 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
13283 | else | |
13284 | { | |
b98664d3 | 13285 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 13286 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 13287 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 13288 | "[in module %s]"), |
9d8780f0 | 13289 | sect_offset_str (child_die->sect_off), |
9c541725 | 13290 | objfile_name (objfile)); |
24c5c679 JK |
13291 | continue; |
13292 | } | |
96408a79 SA |
13293 | } |
13294 | ||
216f72a1 JK |
13295 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
13296 | if (attr == NULL) | |
13297 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 13298 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 13299 | { |
b98664d3 | 13300 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
13301 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13302 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13303 | objfile_name (objfile)); |
96408a79 SA |
13304 | continue; |
13305 | } | |
13306 | parameter->value = DW_BLOCK (attr)->data; | |
13307 | parameter->value_size = DW_BLOCK (attr)->size; | |
13308 | ||
13309 | /* Parameters are not pre-cleared by memset above. */ | |
13310 | parameter->data_value = NULL; | |
13311 | parameter->data_value_size = 0; | |
13312 | call_site->parameter_count++; | |
13313 | ||
216f72a1 JK |
13314 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
13315 | if (attr == NULL) | |
13316 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 13317 | if (attr != nullptr) |
96408a79 | 13318 | { |
4fc6c0d5 | 13319 | if (!attr->form_is_block ()) |
b98664d3 | 13320 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
13321 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13322 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13323 | objfile_name (objfile)); |
96408a79 SA |
13324 | else |
13325 | { | |
13326 | parameter->data_value = DW_BLOCK (attr)->data; | |
13327 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
13328 | } | |
13329 | } | |
13330 | } | |
13331 | } | |
13332 | ||
71a3c369 TT |
13333 | /* Helper function for read_variable. If DIE represents a virtual |
13334 | table, then return the type of the concrete object that is | |
13335 | associated with the virtual table. Otherwise, return NULL. */ | |
13336 | ||
13337 | static struct type * | |
13338 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
13339 | { | |
13340 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
13341 | if (attr == NULL) | |
13342 | return NULL; | |
13343 | ||
13344 | /* Find the type DIE. */ | |
13345 | struct die_info *type_die = NULL; | |
13346 | struct dwarf2_cu *type_cu = cu; | |
13347 | ||
cd6c91b4 | 13348 | if (attr->form_is_ref ()) |
71a3c369 TT |
13349 | type_die = follow_die_ref (die, attr, &type_cu); |
13350 | if (type_die == NULL) | |
13351 | return NULL; | |
13352 | ||
13353 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
13354 | return NULL; | |
13355 | return die_containing_type (type_die, type_cu); | |
13356 | } | |
13357 | ||
13358 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
13359 | ||
13360 | static void | |
13361 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
13362 | { | |
13363 | struct rust_vtable_symbol *storage = NULL; | |
13364 | ||
13365 | if (cu->language == language_rust) | |
13366 | { | |
13367 | struct type *containing_type = rust_containing_type (die, cu); | |
13368 | ||
13369 | if (containing_type != NULL) | |
13370 | { | |
518817b3 | 13371 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
71a3c369 | 13372 | |
468c0cbb | 13373 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol (); |
71a3c369 TT |
13374 | initialize_objfile_symbol (storage); |
13375 | storage->concrete_type = containing_type; | |
cf724bc9 | 13376 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
13377 | } |
13378 | } | |
13379 | ||
e4a62c65 TV |
13380 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
13381 | struct attribute *abstract_origin | |
13382 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13383 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
13384 | if (res == NULL && loc && abstract_origin) | |
13385 | { | |
13386 | /* We have a variable without a name, but with a location and an abstract | |
13387 | origin. This may be a concrete instance of an abstract variable | |
13388 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
13389 | later. */ | |
13390 | struct dwarf2_cu *origin_cu = cu; | |
13391 | struct die_info *origin_die | |
13392 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
13393 | dwarf2_per_objfile *dpo = cu->per_cu->dwarf2_per_objfile; | |
3360b6e7 | 13394 | dpo->abstract_to_concrete[origin_die->sect_off].push_back (die->sect_off); |
e4a62c65 | 13395 | } |
71a3c369 TT |
13396 | } |
13397 | ||
43988095 JK |
13398 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
13399 | reading .debug_rnglists. | |
13400 | Callback's type should be: | |
13401 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13402 | Return true if the attributes are present and valid, otherwise, | |
13403 | return false. */ | |
13404 | ||
13405 | template <typename Callback> | |
13406 | static bool | |
13407 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
13408 | Callback &&callback) | |
13409 | { | |
ed2dc618 | 13410 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 13411 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 13412 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43988095 | 13413 | bfd *obfd = objfile->obfd; |
43988095 | 13414 | /* Base address selection entry. */ |
2b24b6e4 | 13415 | gdb::optional<CORE_ADDR> base; |
43988095 | 13416 | const gdb_byte *buffer; |
43988095 JK |
13417 | CORE_ADDR baseaddr; |
13418 | bool overflow = false; | |
13419 | ||
43988095 JK |
13420 | base = cu->base_address; |
13421 | ||
96b79293 | 13422 | dwarf2_per_objfile->rnglists.read (objfile); |
43988095 JK |
13423 | if (offset >= dwarf2_per_objfile->rnglists.size) |
13424 | { | |
b98664d3 | 13425 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
13426 | offset); |
13427 | return false; | |
13428 | } | |
13429 | buffer = dwarf2_per_objfile->rnglists.buffer + offset; | |
13430 | ||
b3b3bada | 13431 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
13432 | |
13433 | while (1) | |
13434 | { | |
7814882a JK |
13435 | /* Initialize it due to a false compiler warning. */ |
13436 | CORE_ADDR range_beginning = 0, range_end = 0; | |
43988095 JK |
13437 | const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer |
13438 | + dwarf2_per_objfile->rnglists.size); | |
13439 | unsigned int bytes_read; | |
13440 | ||
13441 | if (buffer == buf_end) | |
13442 | { | |
13443 | overflow = true; | |
13444 | break; | |
13445 | } | |
13446 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
13447 | switch (rlet) | |
13448 | { | |
13449 | case DW_RLE_end_of_list: | |
13450 | break; | |
13451 | case DW_RLE_base_address: | |
13452 | if (buffer + cu->header.addr_size > buf_end) | |
13453 | { | |
13454 | overflow = true; | |
13455 | break; | |
13456 | } | |
c8a7a66f | 13457 | base = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13458 | buffer += bytes_read; |
13459 | break; | |
13460 | case DW_RLE_start_length: | |
13461 | if (buffer + cu->header.addr_size > buf_end) | |
13462 | { | |
13463 | overflow = true; | |
13464 | break; | |
13465 | } | |
c8a7a66f TT |
13466 | range_beginning = cu->header.read_address (obfd, buffer, |
13467 | &bytes_read); | |
43988095 JK |
13468 | buffer += bytes_read; |
13469 | range_end = (range_beginning | |
13470 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
13471 | buffer += bytes_read; | |
13472 | if (buffer > buf_end) | |
13473 | { | |
13474 | overflow = true; | |
13475 | break; | |
13476 | } | |
13477 | break; | |
13478 | case DW_RLE_offset_pair: | |
13479 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13480 | buffer += bytes_read; | |
13481 | if (buffer > buf_end) | |
13482 | { | |
13483 | overflow = true; | |
13484 | break; | |
13485 | } | |
13486 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13487 | buffer += bytes_read; | |
13488 | if (buffer > buf_end) | |
13489 | { | |
13490 | overflow = true; | |
13491 | break; | |
13492 | } | |
13493 | break; | |
13494 | case DW_RLE_start_end: | |
13495 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
13496 | { | |
13497 | overflow = true; | |
13498 | break; | |
13499 | } | |
c8a7a66f TT |
13500 | range_beginning = cu->header.read_address (obfd, buffer, |
13501 | &bytes_read); | |
43988095 | 13502 | buffer += bytes_read; |
c8a7a66f | 13503 | range_end = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13504 | buffer += bytes_read; |
13505 | break; | |
13506 | default: | |
b98664d3 | 13507 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13508 | return false; |
13509 | } | |
13510 | if (rlet == DW_RLE_end_of_list || overflow) | |
13511 | break; | |
13512 | if (rlet == DW_RLE_base_address) | |
13513 | continue; | |
13514 | ||
2b24b6e4 | 13515 | if (!base.has_value ()) |
43988095 JK |
13516 | { |
13517 | /* We have no valid base address for the ranges | |
13518 | data. */ | |
b98664d3 | 13519 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13520 | return false; |
13521 | } | |
13522 | ||
13523 | if (range_beginning > range_end) | |
13524 | { | |
13525 | /* Inverted range entries are invalid. */ | |
b98664d3 | 13526 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
13527 | return false; |
13528 | } | |
13529 | ||
13530 | /* Empty range entries have no effect. */ | |
13531 | if (range_beginning == range_end) | |
13532 | continue; | |
13533 | ||
2b24b6e4 TT |
13534 | range_beginning += *base; |
13535 | range_end += *base; | |
43988095 JK |
13536 | |
13537 | /* A not-uncommon case of bad debug info. | |
13538 | Don't pollute the addrmap with bad data. */ | |
13539 | if (range_beginning + baseaddr == 0 | |
13540 | && !dwarf2_per_objfile->has_section_at_zero) | |
13541 | { | |
b98664d3 | 13542 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
13543 | " [in module %s]"), objfile_name (objfile)); |
13544 | continue; | |
13545 | } | |
13546 | ||
13547 | callback (range_beginning, range_end); | |
13548 | } | |
13549 | ||
13550 | if (overflow) | |
13551 | { | |
b98664d3 | 13552 | complaint (_("Offset %d is not terminated " |
43988095 JK |
13553 | "for DW_AT_ranges attribute"), |
13554 | offset); | |
13555 | return false; | |
13556 | } | |
13557 | ||
13558 | return true; | |
13559 | } | |
13560 | ||
13561 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
13562 | Callback's type should be: | |
13563 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 13564 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 13565 | |
43988095 | 13566 | template <typename Callback> |
43039443 | 13567 | static int |
5f46c5a5 | 13568 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 13569 | Callback &&callback) |
43039443 | 13570 | { |
ed2dc618 | 13571 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 13572 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 13573 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43039443 JK |
13574 | struct comp_unit_head *cu_header = &cu->header; |
13575 | bfd *obfd = objfile->obfd; | |
13576 | unsigned int addr_size = cu_header->addr_size; | |
13577 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
13578 | /* Base address selection entry. */ | |
2b24b6e4 | 13579 | gdb::optional<CORE_ADDR> base; |
43039443 | 13580 | unsigned int dummy; |
d521ce57 | 13581 | const gdb_byte *buffer; |
ff013f42 | 13582 | CORE_ADDR baseaddr; |
43039443 | 13583 | |
43988095 JK |
13584 | if (cu_header->version >= 5) |
13585 | return dwarf2_rnglists_process (offset, cu, callback); | |
13586 | ||
d00adf39 | 13587 | base = cu->base_address; |
43039443 | 13588 | |
96b79293 | 13589 | dwarf2_per_objfile->ranges.read (objfile); |
dce234bc | 13590 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 | 13591 | { |
b98664d3 | 13592 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
13593 | offset); |
13594 | return 0; | |
13595 | } | |
dce234bc | 13596 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 | 13597 | |
b3b3bada | 13598 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 13599 | |
43039443 JK |
13600 | while (1) |
13601 | { | |
13602 | CORE_ADDR range_beginning, range_end; | |
13603 | ||
c8a7a66f | 13604 | range_beginning = cu->header.read_address (obfd, buffer, &dummy); |
43039443 | 13605 | buffer += addr_size; |
c8a7a66f | 13606 | range_end = cu->header.read_address (obfd, buffer, &dummy); |
43039443 JK |
13607 | buffer += addr_size; |
13608 | offset += 2 * addr_size; | |
13609 | ||
13610 | /* An end of list marker is a pair of zero addresses. */ | |
13611 | if (range_beginning == 0 && range_end == 0) | |
13612 | /* Found the end of list entry. */ | |
13613 | break; | |
13614 | ||
13615 | /* Each base address selection entry is a pair of 2 values. | |
13616 | The first is the largest possible address, the second is | |
13617 | the base address. Check for a base address here. */ | |
13618 | if ((range_beginning & mask) == mask) | |
13619 | { | |
28d2bfb9 AB |
13620 | /* If we found the largest possible address, then we already |
13621 | have the base address in range_end. */ | |
13622 | base = range_end; | |
43039443 JK |
13623 | continue; |
13624 | } | |
13625 | ||
2b24b6e4 | 13626 | if (!base.has_value ()) |
43039443 JK |
13627 | { |
13628 | /* We have no valid base address for the ranges | |
13629 | data. */ | |
b98664d3 | 13630 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
13631 | return 0; |
13632 | } | |
13633 | ||
9277c30c UW |
13634 | if (range_beginning > range_end) |
13635 | { | |
13636 | /* Inverted range entries are invalid. */ | |
b98664d3 | 13637 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
13638 | return 0; |
13639 | } | |
13640 | ||
13641 | /* Empty range entries have no effect. */ | |
13642 | if (range_beginning == range_end) | |
13643 | continue; | |
13644 | ||
2b24b6e4 TT |
13645 | range_beginning += *base; |
13646 | range_end += *base; | |
43039443 | 13647 | |
01093045 DE |
13648 | /* A not-uncommon case of bad debug info. |
13649 | Don't pollute the addrmap with bad data. */ | |
13650 | if (range_beginning + baseaddr == 0 | |
13651 | && !dwarf2_per_objfile->has_section_at_zero) | |
13652 | { | |
b98664d3 | 13653 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 13654 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
13655 | continue; |
13656 | } | |
13657 | ||
5f46c5a5 JK |
13658 | callback (range_beginning, range_end); |
13659 | } | |
13660 | ||
13661 | return 1; | |
13662 | } | |
13663 | ||
13664 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
13665 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
13666 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
13667 | ||
13668 | static int | |
13669 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
13670 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
891813be | 13671 | dwarf2_psymtab *ranges_pst) |
5f46c5a5 | 13672 | { |
518817b3 | 13673 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5f46c5a5 | 13674 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
b3b3bada | 13675 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
13676 | int low_set = 0; |
13677 | CORE_ADDR low = 0; | |
13678 | CORE_ADDR high = 0; | |
13679 | int retval; | |
13680 | ||
13681 | retval = dwarf2_ranges_process (offset, cu, | |
13682 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13683 | { | |
9277c30c | 13684 | if (ranges_pst != NULL) |
3e29f34a MR |
13685 | { |
13686 | CORE_ADDR lowpc; | |
13687 | CORE_ADDR highpc; | |
13688 | ||
79748972 TT |
13689 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
13690 | range_beginning + baseaddr) | |
13691 | - baseaddr); | |
13692 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
13693 | range_end + baseaddr) | |
13694 | - baseaddr); | |
d320c2b5 TT |
13695 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
13696 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 13697 | } |
ff013f42 | 13698 | |
43039443 JK |
13699 | /* FIXME: This is recording everything as a low-high |
13700 | segment of consecutive addresses. We should have a | |
13701 | data structure for discontiguous block ranges | |
13702 | instead. */ | |
13703 | if (! low_set) | |
13704 | { | |
13705 | low = range_beginning; | |
13706 | high = range_end; | |
13707 | low_set = 1; | |
13708 | } | |
13709 | else | |
13710 | { | |
13711 | if (range_beginning < low) | |
13712 | low = range_beginning; | |
13713 | if (range_end > high) | |
13714 | high = range_end; | |
13715 | } | |
5f46c5a5 JK |
13716 | }); |
13717 | if (!retval) | |
13718 | return 0; | |
43039443 JK |
13719 | |
13720 | if (! low_set) | |
13721 | /* If the first entry is an end-of-list marker, the range | |
13722 | describes an empty scope, i.e. no instructions. */ | |
13723 | return 0; | |
13724 | ||
13725 | if (low_return) | |
13726 | *low_return = low; | |
13727 | if (high_return) | |
13728 | *high_return = high; | |
13729 | return 1; | |
13730 | } | |
13731 | ||
3a2b436a JK |
13732 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
13733 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 13734 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 13735 | |
3a2b436a | 13736 | static enum pc_bounds_kind |
af34e669 | 13737 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 13738 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 13739 | dwarf2_psymtab *pst) |
c906108c | 13740 | { |
518817b3 SM |
13741 | struct dwarf2_per_objfile *dwarf2_per_objfile |
13742 | = cu->per_cu->dwarf2_per_objfile; | |
c906108c | 13743 | struct attribute *attr; |
91da1414 | 13744 | struct attribute *attr_high; |
af34e669 DJ |
13745 | CORE_ADDR low = 0; |
13746 | CORE_ADDR high = 0; | |
e385593e | 13747 | enum pc_bounds_kind ret; |
c906108c | 13748 | |
91da1414 MW |
13749 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
13750 | if (attr_high) | |
af34e669 | 13751 | { |
e142c38c | 13752 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 13753 | if (attr != nullptr) |
91da1414 | 13754 | { |
cd6c91b4 TT |
13755 | low = attr->value_as_address (); |
13756 | high = attr_high->value_as_address (); | |
13757 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) | |
31aa7e4e | 13758 | high += low; |
91da1414 | 13759 | } |
af34e669 DJ |
13760 | else |
13761 | /* Found high w/o low attribute. */ | |
e385593e | 13762 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
13763 | |
13764 | /* Found consecutive range of addresses. */ | |
3a2b436a | 13765 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 13766 | } |
c906108c | 13767 | else |
af34e669 | 13768 | { |
e142c38c | 13769 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
13770 | if (attr != NULL) |
13771 | { | |
18a8505e | 13772 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
13773 | We take advantage of the fact that DW_AT_ranges does not appear |
13774 | in DW_TAG_compile_unit of DWO files. */ | |
13775 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
13776 | unsigned int ranges_offset = (DW_UNSND (attr) | |
13777 | + (need_ranges_base | |
13778 | ? cu->ranges_base | |
13779 | : 0)); | |
2e3cf129 | 13780 | |
af34e669 | 13781 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 13782 | .debug_ranges section. */ |
2e3cf129 | 13783 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 13784 | return PC_BOUNDS_INVALID; |
43039443 | 13785 | /* Found discontinuous range of addresses. */ |
3a2b436a | 13786 | ret = PC_BOUNDS_RANGES; |
af34e669 | 13787 | } |
e385593e JK |
13788 | else |
13789 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 13790 | } |
c906108c | 13791 | |
48fbe735 | 13792 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 13793 | if (high <= low) |
e385593e | 13794 | return PC_BOUNDS_INVALID; |
c906108c SS |
13795 | |
13796 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
13797 | eliminate duplicate copies of functions and vtables and such. | |
13798 | The linker will arbitrarily choose one and discard the others. | |
13799 | The AT_*_pc values for such functions refer to local labels in | |
13800 | these sections. If the section from that file was discarded, the | |
13801 | labels are not in the output, so the relocs get a value of 0. | |
13802 | If this is a discarded function, mark the pc bounds as invalid, | |
13803 | so that GDB will ignore it. */ | |
72dca2f5 | 13804 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
e385593e | 13805 | return PC_BOUNDS_INVALID; |
c906108c SS |
13806 | |
13807 | *lowpc = low; | |
96408a79 SA |
13808 | if (highpc) |
13809 | *highpc = high; | |
af34e669 | 13810 | return ret; |
c906108c SS |
13811 | } |
13812 | ||
b084d499 JB |
13813 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
13814 | its low and high PC addresses. Do nothing if these addresses could not | |
13815 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
13816 | and HIGHPC to the high address if greater than HIGHPC. */ | |
13817 | ||
13818 | static void | |
13819 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
13820 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
13821 | struct dwarf2_cu *cu) | |
13822 | { | |
13823 | CORE_ADDR low, high; | |
13824 | struct die_info *child = die->child; | |
13825 | ||
e385593e | 13826 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 13827 | { |
325fac50 PA |
13828 | *lowpc = std::min (*lowpc, low); |
13829 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
13830 | } |
13831 | ||
13832 | /* If the language does not allow nested subprograms (either inside | |
13833 | subprograms or lexical blocks), we're done. */ | |
13834 | if (cu->language != language_ada) | |
13835 | return; | |
6e70227d | 13836 | |
b084d499 JB |
13837 | /* Check all the children of the given DIE. If it contains nested |
13838 | subprograms, then check their pc bounds. Likewise, we need to | |
13839 | check lexical blocks as well, as they may also contain subprogram | |
13840 | definitions. */ | |
13841 | while (child && child->tag) | |
13842 | { | |
13843 | if (child->tag == DW_TAG_subprogram | |
13844 | || child->tag == DW_TAG_lexical_block) | |
13845 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
436c571c | 13846 | child = child->sibling; |
b084d499 JB |
13847 | } |
13848 | } | |
13849 | ||
fae299cd DC |
13850 | /* Get the low and high pc's represented by the scope DIE, and store |
13851 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
13852 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
13853 | ||
13854 | static void | |
13855 | get_scope_pc_bounds (struct die_info *die, | |
13856 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
13857 | struct dwarf2_cu *cu) | |
13858 | { | |
13859 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
13860 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
13861 | CORE_ADDR current_low, current_high; | |
13862 | ||
3a2b436a | 13863 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 13864 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
13865 | { |
13866 | best_low = current_low; | |
13867 | best_high = current_high; | |
13868 | } | |
13869 | else | |
13870 | { | |
13871 | struct die_info *child = die->child; | |
13872 | ||
13873 | while (child && child->tag) | |
13874 | { | |
13875 | switch (child->tag) { | |
13876 | case DW_TAG_subprogram: | |
b084d499 | 13877 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
13878 | break; |
13879 | case DW_TAG_namespace: | |
f55ee35c | 13880 | case DW_TAG_module: |
fae299cd DC |
13881 | /* FIXME: carlton/2004-01-16: Should we do this for |
13882 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
13883 | that current GCC's always emit the DIEs corresponding | |
13884 | to definitions of methods of classes as children of a | |
13885 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
13886 | the DIEs giving the declarations, which could be | |
13887 | anywhere). But I don't see any reason why the | |
13888 | standards says that they have to be there. */ | |
13889 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
13890 | ||
13891 | if (current_low != ((CORE_ADDR) -1)) | |
13892 | { | |
325fac50 PA |
13893 | best_low = std::min (best_low, current_low); |
13894 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
13895 | } |
13896 | break; | |
13897 | default: | |
0963b4bd | 13898 | /* Ignore. */ |
fae299cd DC |
13899 | break; |
13900 | } | |
13901 | ||
436c571c | 13902 | child = child->sibling; |
fae299cd DC |
13903 | } |
13904 | } | |
13905 | ||
13906 | *lowpc = best_low; | |
13907 | *highpc = best_high; | |
13908 | } | |
13909 | ||
801e3a5b JB |
13910 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
13911 | in DIE. */ | |
380bca97 | 13912 | |
801e3a5b JB |
13913 | static void |
13914 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
13915 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
13916 | { | |
518817b3 | 13917 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13918 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 13919 | struct attribute *attr; |
91da1414 | 13920 | struct attribute *attr_high; |
801e3a5b | 13921 | |
91da1414 MW |
13922 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
13923 | if (attr_high) | |
801e3a5b | 13924 | { |
801e3a5b | 13925 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 13926 | if (attr != nullptr) |
801e3a5b | 13927 | { |
cd6c91b4 TT |
13928 | CORE_ADDR low = attr->value_as_address (); |
13929 | CORE_ADDR high = attr_high->value_as_address (); | |
31aa7e4e | 13930 | |
cd6c91b4 | 13931 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 13932 | high += low; |
9a619af0 | 13933 | |
3e29f34a MR |
13934 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
13935 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 13936 | cu->get_builder ()->record_block_range (block, low, high - 1); |
801e3a5b JB |
13937 | } |
13938 | } | |
13939 | ||
13940 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
435d3d88 | 13941 | if (attr != nullptr) |
801e3a5b | 13942 | { |
18a8505e | 13943 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
13944 | We take advantage of the fact that DW_AT_ranges does not appear |
13945 | in DW_TAG_compile_unit of DWO files. */ | |
13946 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
13947 | |
13948 | /* The value of the DW_AT_ranges attribute is the offset of the | |
13949 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
13950 | unsigned long offset = (DW_UNSND (attr) |
13951 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 13952 | |
2d5f09ec | 13953 | std::vector<blockrange> blockvec; |
5f46c5a5 JK |
13954 | dwarf2_ranges_process (offset, cu, |
13955 | [&] (CORE_ADDR start, CORE_ADDR end) | |
13956 | { | |
58fdfd2c JK |
13957 | start += baseaddr; |
13958 | end += baseaddr; | |
5f46c5a5 JK |
13959 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
13960 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 13961 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 13962 | blockvec.emplace_back (start, end); |
5f46c5a5 | 13963 | }); |
2d5f09ec KB |
13964 | |
13965 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
13966 | } |
13967 | } | |
13968 | ||
685b1105 JK |
13969 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
13970 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 13971 | |
685b1105 JK |
13972 | static void |
13973 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 13974 | { |
38360086 | 13975 | int major, minor; |
60d5a603 JK |
13976 | |
13977 | if (cu->producer == NULL) | |
13978 | { | |
13979 | /* For unknown compilers expect their behavior is DWARF version | |
13980 | compliant. | |
13981 | ||
13982 | GCC started to support .debug_types sections by -gdwarf-4 since | |
13983 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
13984 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
13985 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
13986 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 13987 | } |
b1ffba5a | 13988 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 13989 | { |
38360086 MW |
13990 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
13991 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 13992 | } |
5230b05a | 13993 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
13994 | { |
13995 | cu->producer_is_icc = true; | |
13996 | cu->producer_is_icc_lt_14 = major < 14; | |
13997 | } | |
c258c396 JD |
13998 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
13999 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14000 | else |
14001 | { | |
14002 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14003 | compliant. */ | |
60d5a603 JK |
14004 | } |
14005 | ||
9068261f | 14006 | cu->checked_producer = true; |
685b1105 | 14007 | } |
ba919b58 | 14008 | |
685b1105 JK |
14009 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14010 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14011 | during 4.6.0 experimental. */ | |
14012 | ||
9068261f | 14013 | static bool |
685b1105 JK |
14014 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14015 | { | |
14016 | if (!cu->checked_producer) | |
14017 | check_producer (cu); | |
14018 | ||
14019 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14020 | } |
14021 | ||
c258c396 JD |
14022 | |
14023 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14024 | with incorrect is_stmt attributes. */ | |
14025 | ||
14026 | static bool | |
14027 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14028 | { | |
14029 | if (!cu->checked_producer) | |
14030 | check_producer (cu); | |
14031 | ||
14032 | return cu->producer_is_codewarrior; | |
14033 | } | |
14034 | ||
405feb71 | 14035 | /* Return the default accessibility type if it is not overridden by |
60d5a603 JK |
14036 | DW_AT_accessibility. */ |
14037 | ||
14038 | static enum dwarf_access_attribute | |
14039 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14040 | { | |
14041 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14042 | { | |
14043 | /* The default DWARF 2 accessibility for members is public, the default | |
14044 | accessibility for inheritance is private. */ | |
14045 | ||
14046 | if (die->tag != DW_TAG_inheritance) | |
14047 | return DW_ACCESS_public; | |
14048 | else | |
14049 | return DW_ACCESS_private; | |
14050 | } | |
14051 | else | |
14052 | { | |
14053 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14054 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14055 | depends on the container kind. */ | |
14056 | ||
14057 | if (die->parent->tag == DW_TAG_class_type) | |
14058 | return DW_ACCESS_private; | |
14059 | else | |
14060 | return DW_ACCESS_public; | |
14061 | } | |
14062 | } | |
14063 | ||
74ac6d43 TT |
14064 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14065 | offset. If the attribute was not found return 0, otherwise return | |
14066 | 1. If it was found but could not properly be handled, set *OFFSET | |
14067 | to 0. */ | |
14068 | ||
14069 | static int | |
14070 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14071 | LONGEST *offset) | |
14072 | { | |
14073 | struct attribute *attr; | |
14074 | ||
14075 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14076 | if (attr != NULL) | |
14077 | { | |
14078 | *offset = 0; | |
14079 | ||
14080 | /* Note that we do not check for a section offset first here. | |
14081 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14082 | so if we see it, we can assume that a constant form is really | |
14083 | a constant and not a section offset. */ | |
cd6c91b4 | 14084 | if (attr->form_is_constant ()) |
0826b30a | 14085 | *offset = attr->constant_value (0); |
cd6c91b4 | 14086 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 14087 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 14088 | else if (attr->form_is_block ()) |
74ac6d43 TT |
14089 | *offset = decode_locdesc (DW_BLOCK (attr), cu); |
14090 | else | |
14091 | dwarf2_complex_location_expr_complaint (); | |
14092 | ||
14093 | return 1; | |
14094 | } | |
14095 | ||
14096 | return 0; | |
14097 | } | |
14098 | ||
c906108c SS |
14099 | /* Add an aggregate field to the field list. */ |
14100 | ||
14101 | static void | |
107d2387 | 14102 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14103 | struct dwarf2_cu *cu) |
6e70227d | 14104 | { |
518817b3 | 14105 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5e2b427d | 14106 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
14107 | struct nextfield *new_field; |
14108 | struct attribute *attr; | |
14109 | struct field *fp; | |
15d034d0 | 14110 | const char *fieldname = ""; |
c906108c | 14111 | |
7d0ccb61 DJ |
14112 | if (die->tag == DW_TAG_inheritance) |
14113 | { | |
be2daae6 TT |
14114 | fip->baseclasses.emplace_back (); |
14115 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
14116 | } |
14117 | else | |
14118 | { | |
be2daae6 TT |
14119 | fip->fields.emplace_back (); |
14120 | new_field = &fip->fields.back (); | |
7d0ccb61 | 14121 | } |
be2daae6 | 14122 | |
e142c38c | 14123 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 14124 | if (attr != nullptr) |
c906108c | 14125 | new_field->accessibility = DW_UNSND (attr); |
60d5a603 JK |
14126 | else |
14127 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
14128 | if (new_field->accessibility != DW_ACCESS_public) |
14129 | fip->non_public_fields = 1; | |
60d5a603 | 14130 | |
e142c38c | 14131 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 14132 | if (attr != nullptr) |
c906108c | 14133 | new_field->virtuality = DW_UNSND (attr); |
60d5a603 JK |
14134 | else |
14135 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
14136 | |
14137 | fp = &new_field->field; | |
a9a9bd0f | 14138 | |
e142c38c | 14139 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 14140 | { |
74ac6d43 TT |
14141 | LONGEST offset; |
14142 | ||
a9a9bd0f | 14143 | /* Data member other than a C++ static data member. */ |
6e70227d | 14144 | |
c906108c | 14145 | /* Get type of field. */ |
e7c27a73 | 14146 | fp->type = die_type (die, cu); |
c906108c | 14147 | |
d6a843b5 | 14148 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 14149 | |
c906108c | 14150 | /* Get bit size of field (zero if none). */ |
e142c38c | 14151 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 14152 | if (attr != nullptr) |
c906108c SS |
14153 | { |
14154 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
14155 | } | |
14156 | else | |
14157 | { | |
14158 | FIELD_BITSIZE (*fp) = 0; | |
14159 | } | |
14160 | ||
14161 | /* Get bit offset of field. */ | |
74ac6d43 TT |
14162 | if (handle_data_member_location (die, cu, &offset)) |
14163 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 14164 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
435d3d88 | 14165 | if (attr != nullptr) |
c906108c | 14166 | { |
d5a22e77 | 14167 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
14168 | { |
14169 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
14170 | additional bit offset from the MSB of the containing |
14171 | anonymous object to the MSB of the field. We don't | |
14172 | have to do anything special since we don't need to | |
14173 | know the size of the anonymous object. */ | |
f41f5e61 | 14174 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
14175 | } |
14176 | else | |
14177 | { | |
14178 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
14179 | MSB of the anonymous object, subtract off the number of |
14180 | bits from the MSB of the field to the MSB of the | |
14181 | object, and then subtract off the number of bits of | |
14182 | the field itself. The result is the bit offset of | |
14183 | the LSB of the field. */ | |
c906108c SS |
14184 | int anonymous_size; |
14185 | int bit_offset = DW_UNSND (attr); | |
14186 | ||
e142c38c | 14187 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 14188 | if (attr != nullptr) |
c906108c SS |
14189 | { |
14190 | /* The size of the anonymous object containing | |
14191 | the bit field is explicit, so use the | |
14192 | indicated size (in bytes). */ | |
14193 | anonymous_size = DW_UNSND (attr); | |
14194 | } | |
14195 | else | |
14196 | { | |
14197 | /* The size of the anonymous object containing | |
14198 | the bit field must be inferred from the type | |
14199 | attribute of the data member containing the | |
14200 | bit field. */ | |
14201 | anonymous_size = TYPE_LENGTH (fp->type); | |
14202 | } | |
f41f5e61 PA |
14203 | SET_FIELD_BITPOS (*fp, |
14204 | (FIELD_BITPOS (*fp) | |
14205 | + anonymous_size * bits_per_byte | |
14206 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
14207 | } |
14208 | } | |
da5b30da AA |
14209 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
14210 | if (attr != NULL) | |
14211 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
0826b30a | 14212 | + attr->constant_value (0))); |
c906108c SS |
14213 | |
14214 | /* Get name of field. */ | |
39cbfefa DJ |
14215 | fieldname = dwarf2_name (die, cu); |
14216 | if (fieldname == NULL) | |
14217 | fieldname = ""; | |
d8151005 DJ |
14218 | |
14219 | /* The name is already allocated along with this objfile, so we don't | |
14220 | need to duplicate it for the type. */ | |
14221 | fp->name = fieldname; | |
c906108c SS |
14222 | |
14223 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 14224 | pointer or virtual base class pointer) to private. */ |
e142c38c | 14225 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 14226 | { |
d48cc9dd | 14227 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
14228 | new_field->accessibility = DW_ACCESS_private; |
14229 | fip->non_public_fields = 1; | |
14230 | } | |
14231 | } | |
a9a9bd0f | 14232 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 14233 | { |
a9a9bd0f DC |
14234 | /* C++ static member. */ |
14235 | ||
14236 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
14237 | is a declaration, but all versions of G++ as of this writing | |
14238 | (so through at least 3.2.1) incorrectly generate | |
14239 | DW_TAG_variable tags. */ | |
6e70227d | 14240 | |
ff355380 | 14241 | const char *physname; |
c906108c | 14242 | |
a9a9bd0f | 14243 | /* Get name of field. */ |
39cbfefa DJ |
14244 | fieldname = dwarf2_name (die, cu); |
14245 | if (fieldname == NULL) | |
c906108c SS |
14246 | return; |
14247 | ||
254e6b9e | 14248 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
14249 | if (attr |
14250 | /* Only create a symbol if this is an external value. | |
14251 | new_symbol checks this and puts the value in the global symbol | |
14252 | table, which we want. If it is not external, new_symbol | |
14253 | will try to put the value in cu->list_in_scope which is wrong. */ | |
14254 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
14255 | { |
14256 | /* A static const member, not much different than an enum as far as | |
14257 | we're concerned, except that we can support more types. */ | |
14258 | new_symbol (die, NULL, cu); | |
14259 | } | |
14260 | ||
2df3850c | 14261 | /* Get physical name. */ |
ff355380 | 14262 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 14263 | |
d8151005 DJ |
14264 | /* The name is already allocated along with this objfile, so we don't |
14265 | need to duplicate it for the type. */ | |
14266 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 14267 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 14268 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
14269 | } |
14270 | else if (die->tag == DW_TAG_inheritance) | |
14271 | { | |
74ac6d43 | 14272 | LONGEST offset; |
d4b96c9a | 14273 | |
74ac6d43 TT |
14274 | /* C++ base class field. */ |
14275 | if (handle_data_member_location (die, cu, &offset)) | |
14276 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 14277 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 14278 | FIELD_TYPE (*fp) = die_type (die, cu); |
a737d952 | 14279 | FIELD_NAME (*fp) = TYPE_NAME (fp->type); |
c906108c | 14280 | } |
2ddeaf8a TT |
14281 | else if (die->tag == DW_TAG_variant_part) |
14282 | { | |
14283 | /* process_structure_scope will treat this DIE as a union. */ | |
14284 | process_structure_scope (die, cu); | |
14285 | ||
14286 | /* The variant part is relative to the start of the enclosing | |
14287 | structure. */ | |
14288 | SET_FIELD_BITPOS (*fp, 0); | |
14289 | fp->type = get_die_type (die, cu); | |
14290 | fp->artificial = 1; | |
14291 | fp->name = "<<variant>>"; | |
c8c81635 TT |
14292 | |
14293 | /* Normally a DW_TAG_variant_part won't have a size, but our | |
14294 | representation requires one, so set it to the maximum of the | |
489dbda6 TT |
14295 | child sizes, being sure to account for the offset at which |
14296 | each child is seen. */ | |
c8c81635 TT |
14297 | if (TYPE_LENGTH (fp->type) == 0) |
14298 | { | |
14299 | unsigned max = 0; | |
14300 | for (int i = 0; i < TYPE_NFIELDS (fp->type); ++i) | |
489dbda6 TT |
14301 | { |
14302 | unsigned len = ((TYPE_FIELD_BITPOS (fp->type, i) + 7) / 8 | |
14303 | + TYPE_LENGTH (TYPE_FIELD_TYPE (fp->type, i))); | |
14304 | if (len > max) | |
14305 | max = len; | |
14306 | } | |
c8c81635 TT |
14307 | TYPE_LENGTH (fp->type) = max; |
14308 | } | |
2ddeaf8a TT |
14309 | } |
14310 | else | |
14311 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
14312 | } |
14313 | ||
883fd55a KS |
14314 | /* Can the type given by DIE define another type? */ |
14315 | ||
14316 | static bool | |
14317 | type_can_define_types (const struct die_info *die) | |
14318 | { | |
14319 | switch (die->tag) | |
14320 | { | |
14321 | case DW_TAG_typedef: | |
14322 | case DW_TAG_class_type: | |
14323 | case DW_TAG_structure_type: | |
14324 | case DW_TAG_union_type: | |
14325 | case DW_TAG_enumeration_type: | |
14326 | return true; | |
14327 | ||
14328 | default: | |
14329 | return false; | |
14330 | } | |
14331 | } | |
14332 | ||
14333 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
14334 | |
14335 | static void | |
883fd55a KS |
14336 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
14337 | struct dwarf2_cu *cu) | |
6e70227d | 14338 | { |
be2daae6 TT |
14339 | struct decl_field fp; |
14340 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 14341 | |
883fd55a | 14342 | gdb_assert (type_can_define_types (die)); |
98751a41 | 14343 | |
883fd55a | 14344 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
14345 | fp.name = dwarf2_name (die, cu); |
14346 | fp.type = read_type_die (die, cu); | |
98751a41 | 14347 | |
c191a687 KS |
14348 | /* Save accessibility. */ |
14349 | enum dwarf_access_attribute accessibility; | |
14350 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
14351 | if (attr != NULL) | |
14352 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
14353 | else | |
14354 | accessibility = dwarf2_default_access_attribute (die, cu); | |
14355 | switch (accessibility) | |
14356 | { | |
14357 | case DW_ACCESS_public: | |
14358 | /* The assumed value if neither private nor protected. */ | |
14359 | break; | |
14360 | case DW_ACCESS_private: | |
be2daae6 | 14361 | fp.is_private = 1; |
c191a687 KS |
14362 | break; |
14363 | case DW_ACCESS_protected: | |
be2daae6 | 14364 | fp.is_protected = 1; |
c191a687 KS |
14365 | break; |
14366 | default: | |
b98664d3 | 14367 | complaint (_("Unhandled DW_AT_accessibility value (%x)"), accessibility); |
c191a687 KS |
14368 | } |
14369 | ||
883fd55a | 14370 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 14371 | fip->typedef_field_list.push_back (fp); |
883fd55a | 14372 | else |
be2daae6 | 14373 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
14374 | } |
14375 | ||
c906108c SS |
14376 | /* Create the vector of fields, and attach it to the type. */ |
14377 | ||
14378 | static void | |
fba45db2 | 14379 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 14380 | struct dwarf2_cu *cu) |
c906108c | 14381 | { |
317f7127 | 14382 | int nfields = fip->nfields (); |
c906108c SS |
14383 | |
14384 | /* Record the field count, allocate space for the array of fields, | |
14385 | and create blank accessibility bitfields if necessary. */ | |
14386 | TYPE_NFIELDS (type) = nfields; | |
14387 | TYPE_FIELDS (type) = (struct field *) | |
be2daae6 | 14388 | TYPE_ZALLOC (type, sizeof (struct field) * nfields); |
c906108c | 14389 | |
b4ba55a1 | 14390 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
14391 | { |
14392 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
14393 | ||
14394 | TYPE_FIELD_PRIVATE_BITS (type) = | |
14395 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14396 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
14397 | ||
14398 | TYPE_FIELD_PROTECTED_BITS (type) = | |
14399 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14400 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
14401 | ||
774b6a14 TT |
14402 | TYPE_FIELD_IGNORE_BITS (type) = |
14403 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14404 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
14405 | } |
14406 | ||
14407 | /* If the type has baseclasses, allocate and clear a bit vector for | |
14408 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 14409 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 14410 | { |
be2daae6 | 14411 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 14412 | unsigned char *pointer; |
c906108c SS |
14413 | |
14414 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 14415 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 14416 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
14417 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
14418 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
14419 | } |
14420 | ||
2ddeaf8a TT |
14421 | if (TYPE_FLAG_DISCRIMINATED_UNION (type)) |
14422 | { | |
14423 | struct discriminant_info *di = alloc_discriminant_info (type, -1, -1); | |
14424 | ||
be2daae6 | 14425 | for (int index = 0; index < nfields; ++index) |
2ddeaf8a | 14426 | { |
be2daae6 TT |
14427 | struct nextfield &field = fip->fields[index]; |
14428 | ||
14429 | if (field.variant.is_discriminant) | |
2ddeaf8a | 14430 | di->discriminant_index = index; |
be2daae6 | 14431 | else if (field.variant.default_branch) |
2ddeaf8a TT |
14432 | di->default_index = index; |
14433 | else | |
be2daae6 | 14434 | di->discriminants[index] = field.variant.discriminant_value; |
2ddeaf8a TT |
14435 | } |
14436 | } | |
14437 | ||
be2daae6 TT |
14438 | /* Copy the saved-up fields into the field vector. */ |
14439 | for (int i = 0; i < nfields; ++i) | |
c906108c | 14440 | { |
be2daae6 TT |
14441 | struct nextfield &field |
14442 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
14443 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 14444 | |
be2daae6 TT |
14445 | TYPE_FIELD (type, i) = field.field; |
14446 | switch (field.accessibility) | |
c906108c | 14447 | { |
c5aa993b | 14448 | case DW_ACCESS_private: |
b4ba55a1 | 14449 | if (cu->language != language_ada) |
be2daae6 | 14450 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 14451 | break; |
c906108c | 14452 | |
c5aa993b | 14453 | case DW_ACCESS_protected: |
b4ba55a1 | 14454 | if (cu->language != language_ada) |
be2daae6 | 14455 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 14456 | break; |
c906108c | 14457 | |
c5aa993b JM |
14458 | case DW_ACCESS_public: |
14459 | break; | |
c906108c | 14460 | |
c5aa993b JM |
14461 | default: |
14462 | /* Unknown accessibility. Complain and treat it as public. */ | |
14463 | { | |
b98664d3 | 14464 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 14465 | field.accessibility); |
c5aa993b JM |
14466 | } |
14467 | break; | |
c906108c | 14468 | } |
be2daae6 | 14469 | if (i < fip->baseclasses.size ()) |
c906108c | 14470 | { |
be2daae6 | 14471 | switch (field.virtuality) |
c906108c | 14472 | { |
c5aa993b JM |
14473 | case DW_VIRTUALITY_virtual: |
14474 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 14475 | if (cu->language == language_ada) |
a73c6dcd | 14476 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 14477 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 14478 | break; |
c906108c SS |
14479 | } |
14480 | } | |
c906108c SS |
14481 | } |
14482 | } | |
14483 | ||
7d27a96d TT |
14484 | /* Return true if this member function is a constructor, false |
14485 | otherwise. */ | |
14486 | ||
14487 | static int | |
14488 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
14489 | { | |
14490 | const char *fieldname; | |
fe978cb0 | 14491 | const char *type_name; |
7d27a96d TT |
14492 | int len; |
14493 | ||
14494 | if (die->parent == NULL) | |
14495 | return 0; | |
14496 | ||
14497 | if (die->parent->tag != DW_TAG_structure_type | |
14498 | && die->parent->tag != DW_TAG_union_type | |
14499 | && die->parent->tag != DW_TAG_class_type) | |
14500 | return 0; | |
14501 | ||
14502 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
14503 | type_name = dwarf2_name (die->parent, cu); |
14504 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
14505 | return 0; |
14506 | ||
14507 | len = strlen (fieldname); | |
fe978cb0 PA |
14508 | return (strncmp (fieldname, type_name, len) == 0 |
14509 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
14510 | } |
14511 | ||
e35000a7 TBA |
14512 | /* Check if the given VALUE is a recognized enum |
14513 | dwarf_defaulted_attribute constant according to DWARF5 spec, | |
14514 | Table 7.24. */ | |
14515 | ||
14516 | static bool | |
14517 | is_valid_DW_AT_defaulted (ULONGEST value) | |
14518 | { | |
14519 | switch (value) | |
14520 | { | |
14521 | case DW_DEFAULTED_no: | |
14522 | case DW_DEFAULTED_in_class: | |
14523 | case DW_DEFAULTED_out_of_class: | |
14524 | return true; | |
14525 | } | |
14526 | ||
3142e908 | 14527 | complaint (_("unrecognized DW_AT_defaulted value (%s)"), pulongest (value)); |
e35000a7 TBA |
14528 | return false; |
14529 | } | |
14530 | ||
c906108c SS |
14531 | /* Add a member function to the proper fieldlist. */ |
14532 | ||
14533 | static void | |
107d2387 | 14534 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14535 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 14536 | { |
518817b3 | 14537 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 14538 | struct attribute *attr; |
c906108c | 14539 | int i; |
be2daae6 | 14540 | struct fnfieldlist *flp = nullptr; |
c906108c | 14541 | struct fn_field *fnp; |
15d034d0 | 14542 | const char *fieldname; |
f792889a | 14543 | struct type *this_type; |
60d5a603 | 14544 | enum dwarf_access_attribute accessibility; |
c906108c | 14545 | |
b4ba55a1 | 14546 | if (cu->language == language_ada) |
a73c6dcd | 14547 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 14548 | |
2df3850c | 14549 | /* Get name of member function. */ |
39cbfefa DJ |
14550 | fieldname = dwarf2_name (die, cu); |
14551 | if (fieldname == NULL) | |
2df3850c | 14552 | return; |
c906108c | 14553 | |
c906108c | 14554 | /* Look up member function name in fieldlist. */ |
be2daae6 | 14555 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 14556 | { |
27bfe10e | 14557 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
14558 | { |
14559 | flp = &fip->fnfieldlists[i]; | |
14560 | break; | |
14561 | } | |
c906108c SS |
14562 | } |
14563 | ||
be2daae6 TT |
14564 | /* Create a new fnfieldlist if necessary. */ |
14565 | if (flp == nullptr) | |
c906108c | 14566 | { |
be2daae6 TT |
14567 | fip->fnfieldlists.emplace_back (); |
14568 | flp = &fip->fnfieldlists.back (); | |
c906108c | 14569 | flp->name = fieldname; |
be2daae6 | 14570 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
14571 | } |
14572 | ||
be2daae6 TT |
14573 | /* Create a new member function field and add it to the vector of |
14574 | fnfieldlists. */ | |
14575 | flp->fnfields.emplace_back (); | |
14576 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
14577 | |
14578 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 14579 | if (cu->language == language_cplus) |
be2daae6 TT |
14580 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
14581 | die, cu); | |
3da10d80 KS |
14582 | else |
14583 | { | |
1d06ead6 | 14584 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
14585 | fnp->physname = physname ? physname : ""; |
14586 | } | |
14587 | ||
c906108c | 14588 | fnp->type = alloc_type (objfile); |
f792889a DJ |
14589 | this_type = read_type_die (die, cu); |
14590 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 14591 | { |
f792889a | 14592 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 14593 | |
f792889a | 14594 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
14595 | of the method itself (TYPE_CODE_METHOD). */ |
14596 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
14597 | TYPE_TARGET_TYPE (this_type), |
14598 | TYPE_FIELDS (this_type), | |
14599 | TYPE_NFIELDS (this_type), | |
14600 | TYPE_VARARGS (this_type)); | |
c906108c SS |
14601 | |
14602 | /* Handle static member functions. | |
c5aa993b | 14603 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
14604 | member functions. G++ helps GDB by marking the first |
14605 | parameter for non-static member functions (which is the this | |
14606 | pointer) as artificial. We obtain this information from | |
14607 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 14608 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
14609 | fnp->voffset = VOFFSET_STATIC; |
14610 | } | |
14611 | else | |
b98664d3 | 14612 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 14613 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
14614 | |
14615 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 14616 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 14617 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 14618 | |
3e43a32a MS |
14619 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
14620 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
14621 | |
14622 | /* Get accessibility. */ | |
e142c38c | 14623 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 14624 | if (attr != nullptr) |
aead7601 | 14625 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
14626 | else |
14627 | accessibility = dwarf2_default_access_attribute (die, cu); | |
14628 | switch (accessibility) | |
c906108c | 14629 | { |
60d5a603 JK |
14630 | case DW_ACCESS_private: |
14631 | fnp->is_private = 1; | |
14632 | break; | |
14633 | case DW_ACCESS_protected: | |
14634 | fnp->is_protected = 1; | |
14635 | break; | |
c906108c SS |
14636 | } |
14637 | ||
b02dede2 | 14638 | /* Check for artificial methods. */ |
e142c38c | 14639 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
14640 | if (attr && DW_UNSND (attr) != 0) |
14641 | fnp->is_artificial = 1; | |
14642 | ||
e35000a7 TBA |
14643 | /* Check for defaulted methods. */ |
14644 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
14645 | if (attr != nullptr && is_valid_DW_AT_defaulted (DW_UNSND (attr))) | |
14646 | fnp->defaulted = (enum dwarf_defaulted_attribute) DW_UNSND (attr); | |
14647 | ||
14648 | /* Check for deleted methods. */ | |
14649 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
14650 | if (attr != nullptr && DW_UNSND (attr) != 0) | |
14651 | fnp->is_deleted = 1; | |
14652 | ||
7d27a96d TT |
14653 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
14654 | ||
0d564a31 | 14655 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
14656 | function. For older versions of GCC, this is an offset in the |
14657 | appropriate virtual table, as specified by DW_AT_containing_type. | |
14658 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
14659 | to the object address. */ |
14660 | ||
e142c38c | 14661 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 14662 | if (attr != nullptr) |
8e19ed76 | 14663 | { |
4fc6c0d5 | 14664 | if (attr->form_is_block () && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 14665 | { |
aec5aa8b TT |
14666 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
14667 | { | |
14668 | /* Old-style GCC. */ | |
14669 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
14670 | } | |
14671 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
14672 | || (DW_BLOCK (attr)->size > 1 | |
14673 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
14674 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
14675 | { | |
aec5aa8b TT |
14676 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
14677 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
14678 | dwarf2_complex_location_expr_complaint (); | |
14679 | else | |
14680 | fnp->voffset /= cu->header.addr_size; | |
14681 | fnp->voffset += 2; | |
14682 | } | |
14683 | else | |
14684 | dwarf2_complex_location_expr_complaint (); | |
14685 | ||
14686 | if (!fnp->fcontext) | |
7e993ebf KS |
14687 | { |
14688 | /* If there is no `this' field and no DW_AT_containing_type, | |
14689 | we cannot actually find a base class context for the | |
14690 | vtable! */ | |
14691 | if (TYPE_NFIELDS (this_type) == 0 | |
14692 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
14693 | { | |
b98664d3 | 14694 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
14695 | "function \"%s\" (offset %s)"), |
14696 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
14697 | } |
14698 | else | |
14699 | { | |
14700 | fnp->fcontext | |
14701 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
14702 | } | |
14703 | } | |
aec5aa8b | 14704 | } |
cd6c91b4 | 14705 | else if (attr->form_is_section_offset ()) |
8e19ed76 | 14706 | { |
4d3c2250 | 14707 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
14708 | } |
14709 | else | |
14710 | { | |
4d3c2250 KB |
14711 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
14712 | fieldname); | |
8e19ed76 | 14713 | } |
0d564a31 | 14714 | } |
d48cc9dd DJ |
14715 | else |
14716 | { | |
14717 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
14718 | if (attr && DW_UNSND (attr)) | |
14719 | { | |
14720 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 14721 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 14722 | "but the vtable offset is not specified"), |
9d8780f0 | 14723 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 14724 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
14725 | TYPE_CPLUS_DYNAMIC (type) = 1; |
14726 | } | |
14727 | } | |
c906108c SS |
14728 | } |
14729 | ||
14730 | /* Create the vector of member function fields, and attach it to the type. */ | |
14731 | ||
14732 | static void | |
fba45db2 | 14733 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 14734 | struct dwarf2_cu *cu) |
c906108c | 14735 | { |
b4ba55a1 | 14736 | if (cu->language == language_ada) |
a73c6dcd | 14737 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 14738 | |
c906108c SS |
14739 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
14740 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
14741 | TYPE_ALLOC (type, |
14742 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 14743 | |
be2daae6 | 14744 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 14745 | { |
be2daae6 | 14746 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 14747 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 14748 | |
be2daae6 TT |
14749 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
14750 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 14751 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
14752 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
14753 | ||
14754 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
14755 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
14756 | } |
14757 | ||
be2daae6 | 14758 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
14759 | } |
14760 | ||
1168df01 JB |
14761 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
14762 | language, zero otherwise. */ | |
14763 | static int | |
14764 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
14765 | { | |
14766 | static const char vptr[] = "_vptr"; | |
14767 | ||
9c37b5ae TT |
14768 | /* Look for the C++ form of the vtable. */ |
14769 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
14770 | return 1; |
14771 | ||
14772 | return 0; | |
14773 | } | |
14774 | ||
c0dd20ea | 14775 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
14776 | functions, with the ABI-specified layout. If TYPE describes |
14777 | such a structure, smash it into a member function type. | |
61049d3b DJ |
14778 | |
14779 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
14780 | This is GCC PR debug/28767. */ | |
c0dd20ea | 14781 | |
0b92b5bb TT |
14782 | static void |
14783 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 14784 | { |
09e2d7c7 | 14785 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
14786 | |
14787 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
14788 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
14789 | return; | |
c0dd20ea DJ |
14790 | |
14791 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
14792 | if (TYPE_FIELD_NAME (type, 0) == NULL |
14793 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
14794 | || TYPE_FIELD_NAME (type, 1) == NULL | |
14795 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
14796 | return; | |
c0dd20ea DJ |
14797 | |
14798 | /* Find the type of the method. */ | |
0b92b5bb | 14799 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
14800 | if (pfn_type == NULL |
14801 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
14802 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 14803 | return; |
c0dd20ea DJ |
14804 | |
14805 | /* Look for the "this" argument. */ | |
14806 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
14807 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 14808 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 14809 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 14810 | return; |
c0dd20ea | 14811 | |
09e2d7c7 | 14812 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 14813 | new_type = alloc_type (objfile); |
09e2d7c7 | 14814 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
14815 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
14816 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 14817 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 14818 | } |
1168df01 | 14819 | |
2b4424c3 TT |
14820 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
14821 | appropriate error checking and issuing complaints if there is a | |
14822 | problem. */ | |
14823 | ||
14824 | static ULONGEST | |
14825 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
14826 | { | |
14827 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
14828 | ||
14829 | if (attr == nullptr) | |
14830 | return 0; | |
14831 | ||
cd6c91b4 | 14832 | if (!attr->form_is_constant ()) |
2b4424c3 | 14833 | { |
b98664d3 | 14834 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
14835 | " - DIE at %s [in module %s]"), |
14836 | sect_offset_str (die->sect_off), | |
14837 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
14838 | return 0; | |
14839 | } | |
14840 | ||
14841 | ULONGEST align; | |
14842 | if (attr->form == DW_FORM_sdata) | |
14843 | { | |
14844 | LONGEST val = DW_SND (attr); | |
14845 | if (val < 0) | |
14846 | { | |
b98664d3 | 14847 | complaint (_("DW_AT_alignment value must not be negative" |
2b4424c3 TT |
14848 | " - DIE at %s [in module %s]"), |
14849 | sect_offset_str (die->sect_off), | |
14850 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
14851 | return 0; | |
14852 | } | |
14853 | align = val; | |
14854 | } | |
14855 | else | |
14856 | align = DW_UNSND (attr); | |
14857 | ||
14858 | if (align == 0) | |
14859 | { | |
b98664d3 | 14860 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
14861 | " - DIE at %s [in module %s]"), |
14862 | sect_offset_str (die->sect_off), | |
14863 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
14864 | return 0; | |
14865 | } | |
14866 | if ((align & (align - 1)) != 0) | |
14867 | { | |
b98664d3 | 14868 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
14869 | " - DIE at %s [in module %s]"), |
14870 | sect_offset_str (die->sect_off), | |
14871 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
14872 | return 0; | |
14873 | } | |
14874 | ||
14875 | return align; | |
14876 | } | |
14877 | ||
14878 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
14879 | the alignment for TYPE. */ | |
14880 | ||
14881 | static void | |
14882 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
14883 | struct type *type) | |
14884 | { | |
14885 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 14886 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
14887 | " - DIE at %s [in module %s]"), |
14888 | sect_offset_str (die->sect_off), | |
14889 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
14890 | } | |
685b1105 | 14891 | |
e35000a7 TBA |
14892 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
14893 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
14894 | ||
14895 | static bool | |
14896 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
14897 | { | |
14898 | switch (value) | |
14899 | { | |
14900 | case DW_CC_normal: | |
14901 | case DW_CC_pass_by_reference: | |
14902 | case DW_CC_pass_by_value: | |
14903 | return true; | |
14904 | ||
14905 | default: | |
14906 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 14907 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
14908 | return false; |
14909 | } | |
14910 | } | |
14911 | ||
d0922fcf TBA |
14912 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
14913 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
14914 | also according to GNU-specific values (see include/dwarf2.h). */ | |
14915 | ||
14916 | static bool | |
14917 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
14918 | { | |
14919 | switch (value) | |
14920 | { | |
14921 | case DW_CC_normal: | |
14922 | case DW_CC_program: | |
14923 | case DW_CC_nocall: | |
14924 | return true; | |
14925 | ||
14926 | case DW_CC_GNU_renesas_sh: | |
14927 | case DW_CC_GNU_borland_fastcall_i386: | |
14928 | case DW_CC_GDB_IBM_OpenCL: | |
14929 | return true; | |
14930 | ||
14931 | default: | |
14932 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 14933 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
14934 | return false; |
14935 | } | |
14936 | } | |
14937 | ||
c906108c | 14938 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
14939 | (definition) to create a type for the structure or union. Fill in |
14940 | the type's name and general properties; the members will not be | |
83655187 DE |
14941 | processed until process_structure_scope. A symbol table entry for |
14942 | the type will also not be done until process_structure_scope (assuming | |
14943 | the type has a name). | |
c906108c | 14944 | |
c767944b DJ |
14945 | NOTE: we need to call these functions regardless of whether or not the |
14946 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 14947 | structure or union. This gets the type entered into our set of |
83655187 | 14948 | user defined types. */ |
c906108c | 14949 | |
f792889a | 14950 | static struct type * |
134d01f1 | 14951 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14952 | { |
518817b3 | 14953 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
14954 | struct type *type; |
14955 | struct attribute *attr; | |
15d034d0 | 14956 | const char *name; |
c906108c | 14957 | |
348e048f DE |
14958 | /* If the definition of this type lives in .debug_types, read that type. |
14959 | Don't follow DW_AT_specification though, that will take us back up | |
14960 | the chain and we want to go down. */ | |
052c8bb8 | 14961 | attr = die->attr (DW_AT_signature); |
435d3d88 | 14962 | if (attr != nullptr) |
348e048f | 14963 | { |
ac9ec31b | 14964 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 14965 | |
ac9ec31b | 14966 | /* The type's CU may not be the same as CU. |
02142a6c | 14967 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
14968 | return set_die_type (die, type, cu); |
14969 | } | |
14970 | ||
c0dd20ea | 14971 | type = alloc_type (objfile); |
c906108c | 14972 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 14973 | |
39cbfefa DJ |
14974 | name = dwarf2_name (die, cu); |
14975 | if (name != NULL) | |
c906108c | 14976 | { |
987504bb | 14977 | if (cu->language == language_cplus |
c44af4eb TT |
14978 | || cu->language == language_d |
14979 | || cu->language == language_rust) | |
63d06c5c | 14980 | { |
15d034d0 | 14981 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
14982 | |
14983 | /* dwarf2_full_name might have already finished building the DIE's | |
14984 | type. If so, there is no need to continue. */ | |
14985 | if (get_die_type (die, cu) != NULL) | |
14986 | return get_die_type (die, cu); | |
14987 | ||
e86ca25f | 14988 | TYPE_NAME (type) = full_name; |
63d06c5c DC |
14989 | } |
14990 | else | |
14991 | { | |
d8151005 DJ |
14992 | /* The name is already allocated along with this objfile, so |
14993 | we don't need to duplicate it for the type. */ | |
e86ca25f | 14994 | TYPE_NAME (type) = name; |
63d06c5c | 14995 | } |
c906108c SS |
14996 | } |
14997 | ||
14998 | if (die->tag == DW_TAG_structure_type) | |
14999 | { | |
15000 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
15001 | } | |
15002 | else if (die->tag == DW_TAG_union_type) | |
15003 | { | |
15004 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15005 | } | |
2ddeaf8a TT |
15006 | else if (die->tag == DW_TAG_variant_part) |
15007 | { | |
15008 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15009 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
15010 | } | |
c906108c SS |
15011 | else |
15012 | { | |
4753d33b | 15013 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
15014 | } |
15015 | ||
0cc2414c TT |
15016 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
15017 | TYPE_DECLARED_CLASS (type) = 1; | |
15018 | ||
e35000a7 TBA |
15019 | /* Store the calling convention in the type if it's available in |
15020 | the die. Otherwise the calling convention remains set to | |
15021 | the default value DW_CC_normal. */ | |
15022 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
15023 | if (attr != nullptr | |
15024 | && is_valid_DW_AT_calling_convention_for_type (DW_UNSND (attr))) | |
15025 | { | |
15026 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15027 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
15028 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
15029 | } | |
15030 | ||
e142c38c | 15031 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15032 | if (attr != nullptr) |
c906108c | 15033 | { |
cd6c91b4 | 15034 | if (attr->form_is_constant ()) |
155bfbd3 JB |
15035 | TYPE_LENGTH (type) = DW_UNSND (attr); |
15036 | else | |
15037 | { | |
15038 | /* For the moment, dynamic type sizes are not supported | |
15039 | by GDB's struct type. The actual size is determined | |
15040 | on-demand when resolving the type of a given object, | |
15041 | so set the type's length to zero for now. Otherwise, | |
15042 | we record an expression as the length, and that expression | |
15043 | could lead to a very large value, which could eventually | |
15044 | lead to us trying to allocate that much memory when creating | |
15045 | a value of that type. */ | |
15046 | TYPE_LENGTH (type) = 0; | |
15047 | } | |
c906108c SS |
15048 | } |
15049 | else | |
15050 | { | |
15051 | TYPE_LENGTH (type) = 0; | |
15052 | } | |
15053 | ||
2b4424c3 TT |
15054 | maybe_set_alignment (cu, die, type); |
15055 | ||
5230b05a | 15056 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15057 | { |
5230b05a WT |
15058 | /* ICC<14 does not output the required DW_AT_declaration on |
15059 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15060 | TYPE_STUB (type) = 1; |
685b1105 JK |
15061 | } |
15062 | else | |
15063 | TYPE_STUB_SUPPORTED (type) = 1; | |
15064 | ||
dc718098 | 15065 | if (die_is_declaration (die, cu)) |
876cecd0 | 15066 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15067 | else if (attr == NULL && die->child == NULL |
15068 | && producer_is_realview (cu->producer)) | |
15069 | /* RealView does not output the required DW_AT_declaration | |
15070 | on incomplete types. */ | |
15071 | TYPE_STUB (type) = 1; | |
dc718098 | 15072 | |
c906108c SS |
15073 | /* We need to add the type field to the die immediately so we don't |
15074 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15075 | type within the structure itself. */ |
1c379e20 | 15076 | set_die_type (die, type, cu); |
c906108c | 15077 | |
7e314c57 JK |
15078 | /* set_die_type should be already done. */ |
15079 | set_descriptive_type (type, die, cu); | |
15080 | ||
c767944b DJ |
15081 | return type; |
15082 | } | |
15083 | ||
2ddeaf8a TT |
15084 | /* A helper for process_structure_scope that handles a single member |
15085 | DIE. */ | |
15086 | ||
15087 | static void | |
15088 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15089 | struct field_info *fi, | |
15090 | std::vector<struct symbol *> *template_args, | |
15091 | struct dwarf2_cu *cu) | |
15092 | { | |
15093 | if (child_die->tag == DW_TAG_member | |
15094 | || child_die->tag == DW_TAG_variable | |
15095 | || child_die->tag == DW_TAG_variant_part) | |
15096 | { | |
15097 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15098 | should be a DW_TAG_member that is a declaration, but | |
15099 | all versions of G++ as of this writing (so through at | |
15100 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15101 | tags for them instead. */ | |
15102 | dwarf2_add_field (fi, child_die, cu); | |
15103 | } | |
15104 | else if (child_die->tag == DW_TAG_subprogram) | |
15105 | { | |
15106 | /* Rust doesn't have member functions in the C++ sense. | |
15107 | However, it does emit ordinary functions as children | |
15108 | of a struct DIE. */ | |
15109 | if (cu->language == language_rust) | |
15110 | read_func_scope (child_die, cu); | |
15111 | else | |
15112 | { | |
15113 | /* C++ member function. */ | |
15114 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
15115 | } | |
15116 | } | |
15117 | else if (child_die->tag == DW_TAG_inheritance) | |
15118 | { | |
15119 | /* C++ base class field. */ | |
15120 | dwarf2_add_field (fi, child_die, cu); | |
15121 | } | |
15122 | else if (type_can_define_types (child_die)) | |
15123 | dwarf2_add_type_defn (fi, child_die, cu); | |
15124 | else if (child_die->tag == DW_TAG_template_type_param | |
15125 | || child_die->tag == DW_TAG_template_value_param) | |
15126 | { | |
15127 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15128 | ||
15129 | if (arg != NULL) | |
15130 | template_args->push_back (arg); | |
15131 | } | |
15132 | else if (child_die->tag == DW_TAG_variant) | |
15133 | { | |
15134 | /* In a variant we want to get the discriminant and also add a | |
15135 | field for our sole member child. */ | |
15136 | struct attribute *discr = dwarf2_attr (child_die, DW_AT_discr_value, cu); | |
15137 | ||
bde09ab7 | 15138 | for (die_info *variant_child = child_die->child; |
2ddeaf8a | 15139 | variant_child != NULL; |
436c571c | 15140 | variant_child = variant_child->sibling) |
2ddeaf8a TT |
15141 | { |
15142 | if (variant_child->tag == DW_TAG_member) | |
15143 | { | |
15144 | handle_struct_member_die (variant_child, type, fi, | |
15145 | template_args, cu); | |
15146 | /* Only handle the one. */ | |
15147 | break; | |
15148 | } | |
15149 | } | |
15150 | ||
15151 | /* We don't handle this but we might as well report it if we see | |
15152 | it. */ | |
15153 | if (dwarf2_attr (child_die, DW_AT_discr_list, cu) != nullptr) | |
b98664d3 | 15154 | complaint (_("DW_AT_discr_list is not supported yet" |
2ddeaf8a TT |
15155 | " - DIE at %s [in module %s]"), |
15156 | sect_offset_str (child_die->sect_off), | |
15157 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15158 | ||
15159 | /* The first field was just added, so we can stash the | |
15160 | discriminant there. */ | |
be2daae6 | 15161 | gdb_assert (!fi->fields.empty ()); |
2ddeaf8a | 15162 | if (discr == NULL) |
be2daae6 | 15163 | fi->fields.back ().variant.default_branch = true; |
2ddeaf8a | 15164 | else |
be2daae6 | 15165 | fi->fields.back ().variant.discriminant_value = DW_UNSND (discr); |
2ddeaf8a TT |
15166 | } |
15167 | } | |
15168 | ||
c767944b DJ |
15169 | /* Finish creating a structure or union type, including filling in |
15170 | its members and creating a symbol for it. */ | |
15171 | ||
15172 | static void | |
15173 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15174 | { | |
518817b3 | 15175 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
ca040673 | 15176 | struct die_info *child_die; |
c767944b DJ |
15177 | struct type *type; |
15178 | ||
15179 | type = get_die_type (die, cu); | |
15180 | if (type == NULL) | |
15181 | type = read_structure_type (die, cu); | |
15182 | ||
2ddeaf8a TT |
15183 | /* When reading a DW_TAG_variant_part, we need to notice when we |
15184 | read the discriminant member, so we can record it later in the | |
15185 | discriminant_info. */ | |
15186 | bool is_variant_part = TYPE_FLAG_DISCRIMINATED_UNION (type); | |
feee869b | 15187 | sect_offset discr_offset {}; |
3e1d3d8c | 15188 | bool has_template_parameters = false; |
2ddeaf8a TT |
15189 | |
15190 | if (is_variant_part) | |
15191 | { | |
15192 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
15193 | if (discr == NULL) | |
15194 | { | |
15195 | /* Maybe it's a univariant form, an extension we support. | |
15196 | In this case arrange not to check the offset. */ | |
15197 | is_variant_part = false; | |
15198 | } | |
cd6c91b4 | 15199 | else if (discr->form_is_ref ()) |
2ddeaf8a TT |
15200 | { |
15201 | struct dwarf2_cu *target_cu = cu; | |
15202 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
15203 | ||
15204 | discr_offset = target_die->sect_off; | |
15205 | } | |
15206 | else | |
15207 | { | |
b98664d3 | 15208 | complaint (_("DW_AT_discr does not have DIE reference form" |
2ddeaf8a TT |
15209 | " - DIE at %s [in module %s]"), |
15210 | sect_offset_str (die->sect_off), | |
15211 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15212 | is_variant_part = false; | |
15213 | } | |
15214 | } | |
15215 | ||
e142c38c | 15216 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
15217 | { |
15218 | struct field_info fi; | |
2f4732b0 | 15219 | std::vector<struct symbol *> template_args; |
c906108c | 15220 | |
639d11d3 | 15221 | child_die = die->child; |
c906108c SS |
15222 | |
15223 | while (child_die && child_die->tag) | |
15224 | { | |
2ddeaf8a | 15225 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
34eaf542 | 15226 | |
2ddeaf8a | 15227 | if (is_variant_part && discr_offset == child_die->sect_off) |
be2daae6 | 15228 | fi.fields.back ().variant.is_discriminant = true; |
34eaf542 | 15229 | |
436c571c | 15230 | child_die = child_die->sibling; |
c906108c SS |
15231 | } |
15232 | ||
34eaf542 | 15233 | /* Attach template arguments to type. */ |
2f4732b0 | 15234 | if (!template_args.empty ()) |
34eaf542 | 15235 | { |
3e1d3d8c | 15236 | has_template_parameters = true; |
34eaf542 | 15237 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 15238 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 15239 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
15240 | = XOBNEWVEC (&objfile->objfile_obstack, |
15241 | struct symbol *, | |
15242 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 15243 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 15244 | template_args.data (), |
34eaf542 TT |
15245 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
15246 | * sizeof (struct symbol *))); | |
34eaf542 TT |
15247 | } |
15248 | ||
c906108c | 15249 | /* Attach fields and member functions to the type. */ |
317f7127 | 15250 | if (fi.nfields () > 0) |
e7c27a73 | 15251 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 15252 | if (!fi.fnfieldlists.empty ()) |
c906108c | 15253 | { |
e7c27a73 | 15254 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 15255 | |
c5aa993b | 15256 | /* Get the type which refers to the base class (possibly this |
c906108c | 15257 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
15258 | class from the DW_AT_containing_type attribute. This use of |
15259 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 15260 | |
e142c38c | 15261 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 15262 | { |
e7c27a73 | 15263 | struct type *t = die_containing_type (die, cu); |
c906108c | 15264 | |
ae6ae975 | 15265 | set_type_vptr_basetype (type, t); |
c906108c SS |
15266 | if (type == t) |
15267 | { | |
c906108c SS |
15268 | int i; |
15269 | ||
15270 | /* Our own class provides vtbl ptr. */ | |
15271 | for (i = TYPE_NFIELDS (t) - 1; | |
15272 | i >= TYPE_N_BASECLASSES (t); | |
15273 | --i) | |
15274 | { | |
0d5cff50 | 15275 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 15276 | |
1168df01 | 15277 | if (is_vtable_name (fieldname, cu)) |
c906108c | 15278 | { |
ae6ae975 | 15279 | set_type_vptr_fieldno (type, i); |
c906108c SS |
15280 | break; |
15281 | } | |
15282 | } | |
15283 | ||
15284 | /* Complain if virtual function table field not found. */ | |
15285 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 15286 | complaint (_("virtual function table pointer " |
3e43a32a | 15287 | "not found when defining class '%s'"), |
e86ca25f | 15288 | TYPE_NAME (type) ? TYPE_NAME (type) : ""); |
c906108c SS |
15289 | } |
15290 | else | |
15291 | { | |
ae6ae975 | 15292 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
15293 | } |
15294 | } | |
f6235d4c | 15295 | else if (cu->producer |
61012eef | 15296 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
15297 | { |
15298 | /* The IBM XLC compiler does not provide direct indication | |
15299 | of the containing type, but the vtable pointer is | |
15300 | always named __vfp. */ | |
15301 | ||
15302 | int i; | |
15303 | ||
15304 | for (i = TYPE_NFIELDS (type) - 1; | |
15305 | i >= TYPE_N_BASECLASSES (type); | |
15306 | --i) | |
15307 | { | |
15308 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
15309 | { | |
ae6ae975 DE |
15310 | set_type_vptr_fieldno (type, i); |
15311 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
15312 | break; |
15313 | } | |
15314 | } | |
15315 | } | |
c906108c | 15316 | } |
98751a41 JK |
15317 | |
15318 | /* Copy fi.typedef_field_list linked list elements content into the | |
15319 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 15320 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 15321 | { |
be2daae6 | 15322 | int count = fi.typedef_field_list.size (); |
98751a41 | 15323 | |
a0d7a4ff | 15324 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 15325 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 15326 | = ((struct decl_field *) |
be2daae6 TT |
15327 | TYPE_ALLOC (type, |
15328 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
15329 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 15330 | |
be2daae6 TT |
15331 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
15332 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 15333 | } |
c767944b | 15334 | |
883fd55a KS |
15335 | /* Copy fi.nested_types_list linked list elements content into the |
15336 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 15337 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 15338 | { |
be2daae6 | 15339 | int count = fi.nested_types_list.size (); |
883fd55a KS |
15340 | |
15341 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15342 | TYPE_NESTED_TYPES_ARRAY (type) | |
15343 | = ((struct decl_field *) | |
be2daae6 TT |
15344 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
15345 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 15346 | |
be2daae6 TT |
15347 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
15348 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 15349 | } |
c906108c | 15350 | } |
63d06c5c | 15351 | |
bb5ed363 | 15352 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
15353 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
15354 | cu->rust_unions.push_back (type); | |
0b92b5bb | 15355 | |
90aeadfc DC |
15356 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
15357 | snapshots) has been known to create a die giving a declaration | |
15358 | for a class that has, as a child, a die giving a definition for a | |
15359 | nested class. So we have to process our children even if the | |
15360 | current die is a declaration. Normally, of course, a declaration | |
15361 | won't have any children at all. */ | |
134d01f1 | 15362 | |
ca040673 DE |
15363 | child_die = die->child; |
15364 | ||
90aeadfc DC |
15365 | while (child_die != NULL && child_die->tag) |
15366 | { | |
15367 | if (child_die->tag == DW_TAG_member | |
15368 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
15369 | || child_die->tag == DW_TAG_inheritance |
15370 | || child_die->tag == DW_TAG_template_value_param | |
15371 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 15372 | { |
90aeadfc | 15373 | /* Do nothing. */ |
134d01f1 | 15374 | } |
90aeadfc DC |
15375 | else |
15376 | process_die (child_die, cu); | |
134d01f1 | 15377 | |
436c571c | 15378 | child_die = child_die->sibling; |
134d01f1 DJ |
15379 | } |
15380 | ||
fa4028e9 JB |
15381 | /* Do not consider external references. According to the DWARF standard, |
15382 | these DIEs are identified by the fact that they have no byte_size | |
15383 | attribute, and a declaration attribute. */ | |
15384 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15385 | || !die_is_declaration (die, cu)) | |
3e1d3d8c TT |
15386 | { |
15387 | struct symbol *sym = new_symbol (die, type, cu); | |
15388 | ||
15389 | if (has_template_parameters) | |
15390 | { | |
a776957c TT |
15391 | struct symtab *symtab; |
15392 | if (sym != nullptr) | |
15393 | symtab = symbol_symtab (sym); | |
15394 | else if (cu->line_header != nullptr) | |
15395 | { | |
15396 | /* Any related symtab will do. */ | |
15397 | symtab | |
7ba99d21 | 15398 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
15399 | } |
15400 | else | |
15401 | { | |
15402 | symtab = nullptr; | |
15403 | complaint (_("could not find suitable " | |
15404 | "symtab for template parameter" | |
15405 | " - DIE at %s [in module %s]"), | |
15406 | sect_offset_str (die->sect_off), | |
15407 | objfile_name (objfile)); | |
15408 | } | |
15409 | ||
15410 | if (symtab != nullptr) | |
15411 | { | |
15412 | /* Make sure that the symtab is set on the new symbols. | |
15413 | Even though they don't appear in this symtab directly, | |
15414 | other parts of gdb assume that symbols do, and this is | |
15415 | reasonably true. */ | |
15416 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
15417 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
15418 | } | |
3e1d3d8c TT |
15419 | } |
15420 | } | |
134d01f1 DJ |
15421 | } |
15422 | ||
55426c9d JB |
15423 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
15424 | update TYPE using some information only available in DIE's children. */ | |
15425 | ||
15426 | static void | |
15427 | update_enumeration_type_from_children (struct die_info *die, | |
15428 | struct type *type, | |
15429 | struct dwarf2_cu *cu) | |
15430 | { | |
60f7655a | 15431 | struct die_info *child_die; |
55426c9d JB |
15432 | int unsigned_enum = 1; |
15433 | int flag_enum = 1; | |
55426c9d | 15434 | |
8268c778 | 15435 | auto_obstack obstack; |
55426c9d | 15436 | |
60f7655a DE |
15437 | for (child_die = die->child; |
15438 | child_die != NULL && child_die->tag; | |
436c571c | 15439 | child_die = child_die->sibling) |
55426c9d JB |
15440 | { |
15441 | struct attribute *attr; | |
15442 | LONGEST value; | |
15443 | const gdb_byte *bytes; | |
15444 | struct dwarf2_locexpr_baton *baton; | |
15445 | const char *name; | |
60f7655a | 15446 | |
55426c9d JB |
15447 | if (child_die->tag != DW_TAG_enumerator) |
15448 | continue; | |
15449 | ||
15450 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
15451 | if (attr == NULL) | |
15452 | continue; | |
15453 | ||
15454 | name = dwarf2_name (child_die, cu); | |
15455 | if (name == NULL) | |
15456 | name = "<anonymous enumerator>"; | |
15457 | ||
15458 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
15459 | &value, &bytes, &baton); | |
15460 | if (value < 0) | |
15461 | { | |
15462 | unsigned_enum = 0; | |
15463 | flag_enum = 0; | |
15464 | } | |
55426c9d | 15465 | else |
edd45eb0 SM |
15466 | { |
15467 | if (count_one_bits_ll (value) >= 2) | |
15468 | flag_enum = 0; | |
edd45eb0 | 15469 | } |
55426c9d JB |
15470 | |
15471 | /* If we already know that the enum type is neither unsigned, nor | |
15472 | a flag type, no need to look at the rest of the enumerates. */ | |
15473 | if (!unsigned_enum && !flag_enum) | |
15474 | break; | |
55426c9d JB |
15475 | } |
15476 | ||
15477 | if (unsigned_enum) | |
15478 | TYPE_UNSIGNED (type) = 1; | |
15479 | if (flag_enum) | |
15480 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
15481 | } |
15482 | ||
134d01f1 DJ |
15483 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
15484 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 15485 | |
f792889a | 15486 | static struct type * |
134d01f1 | 15487 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15488 | { |
518817b3 | 15489 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 15490 | struct type *type; |
c906108c | 15491 | struct attribute *attr; |
0114d602 | 15492 | const char *name; |
134d01f1 | 15493 | |
348e048f DE |
15494 | /* If the definition of this type lives in .debug_types, read that type. |
15495 | Don't follow DW_AT_specification though, that will take us back up | |
15496 | the chain and we want to go down. */ | |
052c8bb8 | 15497 | attr = die->attr (DW_AT_signature); |
435d3d88 | 15498 | if (attr != nullptr) |
348e048f | 15499 | { |
ac9ec31b | 15500 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15501 | |
ac9ec31b | 15502 | /* The type's CU may not be the same as CU. |
02142a6c | 15503 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15504 | return set_die_type (die, type, cu); |
15505 | } | |
15506 | ||
c906108c SS |
15507 | type = alloc_type (objfile); |
15508 | ||
15509 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 15510 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 15511 | if (name != NULL) |
e86ca25f | 15512 | TYPE_NAME (type) = name; |
c906108c | 15513 | |
0626fc76 TT |
15514 | attr = dwarf2_attr (die, DW_AT_type, cu); |
15515 | if (attr != NULL) | |
15516 | { | |
15517 | struct type *underlying_type = die_type (die, cu); | |
15518 | ||
15519 | TYPE_TARGET_TYPE (type) = underlying_type; | |
15520 | } | |
15521 | ||
e142c38c | 15522 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15523 | if (attr != nullptr) |
c906108c SS |
15524 | { |
15525 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
15526 | } | |
15527 | else | |
15528 | { | |
15529 | TYPE_LENGTH (type) = 0; | |
15530 | } | |
15531 | ||
2b4424c3 TT |
15532 | maybe_set_alignment (cu, die, type); |
15533 | ||
137033e9 JB |
15534 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
15535 | declared as private in the package spec, and then defined only | |
15536 | inside the package body. Such types are known as Taft Amendment | |
15537 | Types. When another package uses such a type, an incomplete DIE | |
15538 | may be generated by the compiler. */ | |
02eb380e | 15539 | if (die_is_declaration (die, cu)) |
876cecd0 | 15540 | TYPE_STUB (type) = 1; |
02eb380e | 15541 | |
0626fc76 TT |
15542 | /* Finish the creation of this type by using the enum's children. |
15543 | We must call this even when the underlying type has been provided | |
15544 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
15545 | update_enumeration_type_from_children (die, type, cu); |
15546 | ||
0626fc76 TT |
15547 | /* If this type has an underlying type that is not a stub, then we |
15548 | may use its attributes. We always use the "unsigned" attribute | |
15549 | in this situation, because ordinarily we guess whether the type | |
15550 | is unsigned -- but the guess can be wrong and the underlying type | |
15551 | can tell us the reality. However, we defer to a local size | |
15552 | attribute if one exists, because this lets the compiler override | |
15553 | the underlying type if needed. */ | |
15554 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
15555 | { | |
9e7c9a03 HD |
15556 | struct type *underlying_type = TYPE_TARGET_TYPE (type); |
15557 | underlying_type = check_typedef (underlying_type); | |
15558 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (underlying_type); | |
0626fc76 | 15559 | if (TYPE_LENGTH (type) == 0) |
9e7c9a03 | 15560 | TYPE_LENGTH (type) = TYPE_LENGTH (underlying_type); |
2b4424c3 | 15561 | if (TYPE_RAW_ALIGN (type) == 0 |
9e7c9a03 HD |
15562 | && TYPE_RAW_ALIGN (underlying_type) != 0) |
15563 | set_type_align (type, TYPE_RAW_ALIGN (underlying_type)); | |
0626fc76 TT |
15564 | } |
15565 | ||
3d567982 TT |
15566 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
15567 | ||
f792889a | 15568 | return set_die_type (die, type, cu); |
134d01f1 DJ |
15569 | } |
15570 | ||
15571 | /* Given a pointer to a die which begins an enumeration, process all | |
15572 | the dies that define the members of the enumeration, and create the | |
15573 | symbol for the enumeration type. | |
15574 | ||
15575 | NOTE: We reverse the order of the element list. */ | |
15576 | ||
15577 | static void | |
15578 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15579 | { | |
f792889a | 15580 | struct type *this_type; |
134d01f1 | 15581 | |
f792889a DJ |
15582 | this_type = get_die_type (die, cu); |
15583 | if (this_type == NULL) | |
15584 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 15585 | |
639d11d3 | 15586 | if (die->child != NULL) |
c906108c | 15587 | { |
9dc481d3 DE |
15588 | struct die_info *child_die; |
15589 | struct symbol *sym; | |
43816ebc | 15590 | std::vector<struct field> fields; |
15d034d0 | 15591 | const char *name; |
9dc481d3 | 15592 | |
639d11d3 | 15593 | child_die = die->child; |
c906108c SS |
15594 | while (child_die && child_die->tag) |
15595 | { | |
15596 | if (child_die->tag != DW_TAG_enumerator) | |
15597 | { | |
e7c27a73 | 15598 | process_die (child_die, cu); |
c906108c SS |
15599 | } |
15600 | else | |
15601 | { | |
39cbfefa DJ |
15602 | name = dwarf2_name (child_die, cu); |
15603 | if (name) | |
c906108c | 15604 | { |
f792889a | 15605 | sym = new_symbol (child_die, this_type, cu); |
c906108c | 15606 | |
43816ebc TT |
15607 | fields.emplace_back (); |
15608 | struct field &field = fields.back (); | |
c906108c | 15609 | |
43816ebc TT |
15610 | FIELD_NAME (field) = sym->linkage_name (); |
15611 | FIELD_TYPE (field) = NULL; | |
15612 | SET_FIELD_ENUMVAL (field, SYMBOL_VALUE (sym)); | |
15613 | FIELD_BITSIZE (field) = 0; | |
c906108c SS |
15614 | } |
15615 | } | |
15616 | ||
436c571c | 15617 | child_die = child_die->sibling; |
c906108c SS |
15618 | } |
15619 | ||
43816ebc | 15620 | if (!fields.empty ()) |
c906108c | 15621 | { |
43816ebc | 15622 | TYPE_NFIELDS (this_type) = fields.size (); |
f792889a | 15623 | TYPE_FIELDS (this_type) = (struct field *) |
43816ebc TT |
15624 | TYPE_ALLOC (this_type, sizeof (struct field) * fields.size ()); |
15625 | memcpy (TYPE_FIELDS (this_type), fields.data (), | |
15626 | sizeof (struct field) * fields.size ()); | |
c906108c | 15627 | } |
c906108c | 15628 | } |
134d01f1 | 15629 | |
6c83ed52 TT |
15630 | /* If we are reading an enum from a .debug_types unit, and the enum |
15631 | is a declaration, and the enum is not the signatured type in the | |
15632 | unit, then we do not want to add a symbol for it. Adding a | |
15633 | symbol would in some cases obscure the true definition of the | |
15634 | enum, giving users an incomplete type when the definition is | |
15635 | actually available. Note that we do not want to do this for all | |
15636 | enums which are just declarations, because C++0x allows forward | |
15637 | enum declarations. */ | |
3019eac3 | 15638 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
15639 | && die_is_declaration (die, cu)) |
15640 | { | |
52dc124a | 15641 | struct signatured_type *sig_type; |
6c83ed52 | 15642 | |
c0f78cd4 | 15643 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
15644 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
15645 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
15646 | return; |
15647 | } | |
15648 | ||
f792889a | 15649 | new_symbol (die, this_type, cu); |
c906108c SS |
15650 | } |
15651 | ||
15652 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
15653 | the DIE's type field. For now, this only handles one dimensional | |
15654 | arrays. */ | |
15655 | ||
f792889a | 15656 | static struct type * |
e7c27a73 | 15657 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15658 | { |
518817b3 | 15659 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 15660 | struct die_info *child_die; |
7e314c57 | 15661 | struct type *type; |
c906108c | 15662 | struct type *element_type, *range_type, *index_type; |
c906108c | 15663 | struct attribute *attr; |
15d034d0 | 15664 | const char *name; |
a405673c | 15665 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 15666 | unsigned int bit_stride = 0; |
c906108c | 15667 | |
e7c27a73 | 15668 | element_type = die_type (die, cu); |
c906108c | 15669 | |
7e314c57 JK |
15670 | /* The die_type call above may have already set the type for this DIE. */ |
15671 | type = get_die_type (die, cu); | |
15672 | if (type) | |
15673 | return type; | |
15674 | ||
dc53a7ad JB |
15675 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
15676 | if (attr != NULL) | |
a405673c JB |
15677 | { |
15678 | int stride_ok; | |
09ba997f | 15679 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
a405673c JB |
15680 | |
15681 | byte_stride_prop | |
15682 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
15683 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
15684 | prop_type); | |
a405673c JB |
15685 | if (!stride_ok) |
15686 | { | |
b98664d3 | 15687 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
15688 | " - DIE at %s [in module %s]"), |
15689 | sect_offset_str (die->sect_off), | |
518817b3 | 15690 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a405673c JB |
15691 | /* Ignore this attribute. We will likely not be able to print |
15692 | arrays of this type correctly, but there is little we can do | |
15693 | to help if we cannot read the attribute's value. */ | |
15694 | byte_stride_prop = NULL; | |
15695 | } | |
15696 | } | |
dc53a7ad JB |
15697 | |
15698 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
15699 | if (attr != NULL) | |
15700 | bit_stride = DW_UNSND (attr); | |
15701 | ||
c906108c SS |
15702 | /* Irix 6.2 native cc creates array types without children for |
15703 | arrays with unspecified length. */ | |
639d11d3 | 15704 | if (die->child == NULL) |
c906108c | 15705 | { |
46bf5051 | 15706 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 15707 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 15708 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 15709 | byte_stride_prop, bit_stride); |
f792889a | 15710 | return set_die_type (die, type, cu); |
c906108c SS |
15711 | } |
15712 | ||
791afaa2 | 15713 | std::vector<struct type *> range_types; |
639d11d3 | 15714 | child_die = die->child; |
c906108c SS |
15715 | while (child_die && child_die->tag) |
15716 | { | |
15717 | if (child_die->tag == DW_TAG_subrange_type) | |
15718 | { | |
f792889a | 15719 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 15720 | |
f792889a | 15721 | if (child_type != NULL) |
a02abb62 | 15722 | { |
0963b4bd MS |
15723 | /* The range type was succesfully read. Save it for the |
15724 | array type creation. */ | |
791afaa2 | 15725 | range_types.push_back (child_type); |
a02abb62 | 15726 | } |
c906108c | 15727 | } |
436c571c | 15728 | child_die = child_die->sibling; |
c906108c SS |
15729 | } |
15730 | ||
15731 | /* Dwarf2 dimensions are output from left to right, create the | |
15732 | necessary array types in backwards order. */ | |
7ca2d3a3 | 15733 | |
c906108c | 15734 | type = element_type; |
7ca2d3a3 DL |
15735 | |
15736 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
15737 | { | |
15738 | int i = 0; | |
9a619af0 | 15739 | |
791afaa2 | 15740 | while (i < range_types.size ()) |
dc53a7ad | 15741 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 15742 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
15743 | } |
15744 | else | |
15745 | { | |
791afaa2 | 15746 | size_t ndim = range_types.size (); |
7ca2d3a3 | 15747 | while (ndim-- > 0) |
dc53a7ad | 15748 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 15749 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 15750 | } |
c906108c | 15751 | |
f5f8a009 EZ |
15752 | /* Understand Dwarf2 support for vector types (like they occur on |
15753 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
15754 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
15755 | custom vendor extension. The main difference between a regular | |
15756 | array and the vector variant is that vectors are passed by value | |
15757 | to functions. */ | |
e142c38c | 15758 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 15759 | if (attr != nullptr) |
ea37ba09 | 15760 | make_vector_type (type); |
f5f8a009 | 15761 | |
dbc98a8b KW |
15762 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
15763 | implementation may choose to implement triple vectors using this | |
15764 | attribute. */ | |
15765 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 15766 | if (attr != nullptr) |
dbc98a8b KW |
15767 | { |
15768 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
15769 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
15770 | else | |
b98664d3 | 15771 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 15772 | "than the total size of elements")); |
dbc98a8b KW |
15773 | } |
15774 | ||
39cbfefa DJ |
15775 | name = dwarf2_name (die, cu); |
15776 | if (name) | |
15777 | TYPE_NAME (type) = name; | |
6e70227d | 15778 | |
2b4424c3 TT |
15779 | maybe_set_alignment (cu, die, type); |
15780 | ||
0963b4bd | 15781 | /* Install the type in the die. */ |
7e314c57 JK |
15782 | set_die_type (die, type, cu); |
15783 | ||
15784 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
15785 | set_descriptive_type (type, die, cu); |
15786 | ||
7e314c57 | 15787 | return type; |
c906108c SS |
15788 | } |
15789 | ||
7ca2d3a3 | 15790 | static enum dwarf_array_dim_ordering |
6e70227d | 15791 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
15792 | { |
15793 | struct attribute *attr; | |
15794 | ||
15795 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
15796 | ||
435d3d88 | 15797 | if (attr != nullptr) |
aead7601 | 15798 | return (enum dwarf_array_dim_ordering) DW_SND (attr); |
7ca2d3a3 | 15799 | |
0963b4bd MS |
15800 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
15801 | opposite order to the dwarf2 specification, but data is still | |
15802 | laid out as per normal fortran. | |
7ca2d3a3 | 15803 | |
0963b4bd MS |
15804 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
15805 | version checking. */ | |
7ca2d3a3 | 15806 | |
905e0470 PM |
15807 | if (cu->language == language_fortran |
15808 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
15809 | { |
15810 | return DW_ORD_row_major; | |
15811 | } | |
15812 | ||
6e70227d | 15813 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
15814 | { |
15815 | case array_column_major: | |
15816 | return DW_ORD_col_major; | |
15817 | case array_row_major: | |
15818 | default: | |
15819 | return DW_ORD_row_major; | |
15820 | }; | |
15821 | } | |
15822 | ||
72019c9c | 15823 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 15824 | the DIE's type field. */ |
72019c9c | 15825 | |
f792889a | 15826 | static struct type * |
72019c9c GM |
15827 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
15828 | { | |
7e314c57 JK |
15829 | struct type *domain_type, *set_type; |
15830 | struct attribute *attr; | |
f792889a | 15831 | |
7e314c57 JK |
15832 | domain_type = die_type (die, cu); |
15833 | ||
15834 | /* The die_type call above may have already set the type for this DIE. */ | |
15835 | set_type = get_die_type (die, cu); | |
15836 | if (set_type) | |
15837 | return set_type; | |
15838 | ||
15839 | set_type = create_set_type (NULL, domain_type); | |
15840 | ||
15841 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 15842 | if (attr != nullptr) |
d09039dd | 15843 | TYPE_LENGTH (set_type) = DW_UNSND (attr); |
7e314c57 | 15844 | |
2b4424c3 TT |
15845 | maybe_set_alignment (cu, die, set_type); |
15846 | ||
f792889a | 15847 | return set_die_type (die, set_type, cu); |
72019c9c | 15848 | } |
7ca2d3a3 | 15849 | |
0971de02 TT |
15850 | /* A helper for read_common_block that creates a locexpr baton. |
15851 | SYM is the symbol which we are marking as computed. | |
15852 | COMMON_DIE is the DIE for the common block. | |
15853 | COMMON_LOC is the location expression attribute for the common | |
15854 | block itself. | |
15855 | MEMBER_LOC is the location expression attribute for the particular | |
15856 | member of the common block that we are processing. | |
15857 | CU is the CU from which the above come. */ | |
15858 | ||
15859 | static void | |
15860 | mark_common_block_symbol_computed (struct symbol *sym, | |
15861 | struct die_info *common_die, | |
15862 | struct attribute *common_loc, | |
15863 | struct attribute *member_loc, | |
15864 | struct dwarf2_cu *cu) | |
15865 | { | |
518817b3 SM |
15866 | struct dwarf2_per_objfile *dwarf2_per_objfile |
15867 | = cu->per_cu->dwarf2_per_objfile; | |
0971de02 TT |
15868 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
15869 | struct dwarf2_locexpr_baton *baton; | |
15870 | gdb_byte *ptr; | |
15871 | unsigned int cu_off; | |
15872 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
15873 | LONGEST offset = 0; | |
15874 | ||
15875 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
15876 | gdb_assert (common_loc->form_is_block ()); |
15877 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 15878 | || member_loc->form_is_constant ()); |
0971de02 | 15879 | |
8d749320 | 15880 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
0971de02 TT |
15881 | baton->per_cu = cu->per_cu; |
15882 | gdb_assert (baton->per_cu); | |
15883 | ||
15884 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
15885 | ||
cd6c91b4 | 15886 | if (member_loc->form_is_constant ()) |
0971de02 | 15887 | { |
0826b30a | 15888 | offset = member_loc->constant_value (0); |
0971de02 TT |
15889 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; |
15890 | } | |
15891 | else | |
15892 | baton->size += DW_BLOCK (member_loc)->size; | |
15893 | ||
224c3ddb | 15894 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
15895 | baton->data = ptr; |
15896 | ||
15897 | *ptr++ = DW_OP_call4; | |
9c541725 | 15898 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
15899 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
15900 | ptr += 4; | |
15901 | ||
cd6c91b4 | 15902 | if (member_loc->form_is_constant ()) |
0971de02 TT |
15903 | { |
15904 | *ptr++ = DW_OP_addr; | |
15905 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
15906 | ptr += cu->header.addr_size; | |
15907 | } | |
15908 | else | |
15909 | { | |
15910 | /* We have to copy the data here, because DW_OP_call4 will only | |
15911 | use a DW_AT_location attribute. */ | |
15912 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
15913 | ptr += DW_BLOCK (member_loc)->size; | |
15914 | } | |
15915 | ||
15916 | *ptr++ = DW_OP_plus; | |
15917 | gdb_assert (ptr - baton->data == baton->size); | |
15918 | ||
0971de02 | 15919 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 15920 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
15921 | } |
15922 | ||
4357ac6c TT |
15923 | /* Create appropriate locally-scoped variables for all the |
15924 | DW_TAG_common_block entries. Also create a struct common_block | |
15925 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 15926 | is used to separate the common blocks name namespace from regular |
4357ac6c | 15927 | variable names. */ |
c906108c SS |
15928 | |
15929 | static void | |
e7c27a73 | 15930 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15931 | { |
0971de02 TT |
15932 | struct attribute *attr; |
15933 | ||
15934 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 15935 | if (attr != nullptr) |
0971de02 TT |
15936 | { |
15937 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 15938 | if (attr->form_is_block ()) |
0971de02 TT |
15939 | { |
15940 | /* Ok. */ | |
15941 | } | |
cd6c91b4 | 15942 | else if (attr->form_is_section_offset ()) |
0971de02 TT |
15943 | { |
15944 | dwarf2_complex_location_expr_complaint (); | |
15945 | attr = NULL; | |
15946 | } | |
15947 | else | |
15948 | { | |
15949 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
15950 | "common block member"); | |
15951 | attr = NULL; | |
15952 | } | |
15953 | } | |
15954 | ||
639d11d3 | 15955 | if (die->child != NULL) |
c906108c | 15956 | { |
518817b3 | 15957 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
4357ac6c TT |
15958 | struct die_info *child_die; |
15959 | size_t n_entries = 0, size; | |
15960 | struct common_block *common_block; | |
15961 | struct symbol *sym; | |
74ac6d43 | 15962 | |
4357ac6c TT |
15963 | for (child_die = die->child; |
15964 | child_die && child_die->tag; | |
436c571c | 15965 | child_die = child_die->sibling) |
4357ac6c TT |
15966 | ++n_entries; |
15967 | ||
15968 | size = (sizeof (struct common_block) | |
15969 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
15970 | common_block |
15971 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
15972 | size); | |
4357ac6c TT |
15973 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
15974 | common_block->n_entries = 0; | |
15975 | ||
15976 | for (child_die = die->child; | |
15977 | child_die && child_die->tag; | |
436c571c | 15978 | child_die = child_die->sibling) |
4357ac6c TT |
15979 | { |
15980 | /* Create the symbol in the DW_TAG_common_block block in the current | |
15981 | symbol scope. */ | |
e7c27a73 | 15982 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
15983 | if (sym != NULL) |
15984 | { | |
15985 | struct attribute *member_loc; | |
15986 | ||
15987 | common_block->contents[common_block->n_entries++] = sym; | |
15988 | ||
15989 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
15990 | cu); | |
15991 | if (member_loc) | |
15992 | { | |
15993 | /* GDB has handled this for a long time, but it is | |
15994 | not specified by DWARF. It seems to have been | |
15995 | emitted by gfortran at least as recently as: | |
15996 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 15997 | complaint (_("Variable in common block has " |
0971de02 | 15998 | "DW_AT_data_member_location " |
9d8780f0 SM |
15999 | "- DIE at %s [in module %s]"), |
16000 | sect_offset_str (child_die->sect_off), | |
518817b3 | 16001 | objfile_name (objfile)); |
0971de02 | 16002 | |
cd6c91b4 | 16003 | if (member_loc->form_is_section_offset ()) |
0971de02 | 16004 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 16005 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 16006 | || member_loc->form_is_block ()) |
0971de02 | 16007 | { |
435d3d88 | 16008 | if (attr != nullptr) |
0971de02 TT |
16009 | mark_common_block_symbol_computed (sym, die, attr, |
16010 | member_loc, cu); | |
16011 | } | |
16012 | else | |
16013 | dwarf2_complex_location_expr_complaint (); | |
16014 | } | |
16015 | } | |
c906108c | 16016 | } |
4357ac6c TT |
16017 | |
16018 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
16019 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
16020 | } |
16021 | } | |
16022 | ||
0114d602 | 16023 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 16024 | |
0114d602 DJ |
16025 | static struct type * |
16026 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 16027 | { |
518817b3 | 16028 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16029 | const char *previous_prefix, *name; |
9219021c | 16030 | int is_anonymous; |
0114d602 DJ |
16031 | struct type *type; |
16032 | ||
16033 | /* For extensions, reuse the type of the original namespace. */ | |
16034 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16035 | { | |
16036 | struct die_info *ext_die; | |
16037 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16038 | |
0114d602 DJ |
16039 | ext_die = dwarf2_extension (die, &ext_cu); |
16040 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16041 | |
16042 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16043 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16044 | return set_die_type (die, type, cu); |
16045 | } | |
9219021c | 16046 | |
e142c38c | 16047 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16048 | |
16049 | /* Now build the name of the current namespace. */ | |
16050 | ||
0114d602 DJ |
16051 | previous_prefix = determine_prefix (die, cu); |
16052 | if (previous_prefix[0] != '\0') | |
16053 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16054 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16055 | |
16056 | /* Create the type. */ | |
19f392bc | 16057 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 16058 | |
60531b24 | 16059 | return set_die_type (die, type, cu); |
0114d602 DJ |
16060 | } |
16061 | ||
22cee43f | 16062 | /* Read a namespace scope. */ |
0114d602 DJ |
16063 | |
16064 | static void | |
16065 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16066 | { | |
518817b3 | 16067 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16068 | int is_anonymous; |
9219021c | 16069 | |
5c4e30ca DC |
16070 | /* Add a symbol associated to this if we haven't seen the namespace |
16071 | before. Also, add a using directive if it's an anonymous | |
16072 | namespace. */ | |
9219021c | 16073 | |
f2f0e013 | 16074 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16075 | { |
16076 | struct type *type; | |
16077 | ||
0114d602 | 16078 | type = read_type_die (die, cu); |
e7c27a73 | 16079 | new_symbol (die, type, cu); |
5c4e30ca | 16080 | |
e8e80198 | 16081 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16082 | if (is_anonymous) |
0114d602 DJ |
16083 | { |
16084 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16085 | |
eb1e02fd | 16086 | std::vector<const char *> excludes; |
804d2729 | 16087 | add_using_directive (using_directives (cu), |
22cee43f | 16088 | previous_prefix, TYPE_NAME (type), NULL, |
eb1e02fd | 16089 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16090 | } |
5c4e30ca | 16091 | } |
9219021c | 16092 | |
639d11d3 | 16093 | if (die->child != NULL) |
d9fa45fe | 16094 | { |
639d11d3 | 16095 | struct die_info *child_die = die->child; |
6e70227d | 16096 | |
d9fa45fe DC |
16097 | while (child_die && child_die->tag) |
16098 | { | |
e7c27a73 | 16099 | process_die (child_die, cu); |
436c571c | 16100 | child_die = child_die->sibling; |
d9fa45fe DC |
16101 | } |
16102 | } | |
38d518c9 EZ |
16103 | } |
16104 | ||
f55ee35c JK |
16105 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16106 | imported module. Still we need that type as local Fortran "use ... only" | |
16107 | declaration imports depend on the created type in determine_prefix. */ | |
16108 | ||
16109 | static struct type * | |
16110 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16111 | { | |
518817b3 | 16112 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
15d034d0 | 16113 | const char *module_name; |
f55ee35c JK |
16114 | struct type *type; |
16115 | ||
16116 | module_name = dwarf2_name (die, cu); | |
19f392bc | 16117 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 16118 | |
f55ee35c JK |
16119 | return set_die_type (die, type, cu); |
16120 | } | |
16121 | ||
5d7cb8df JK |
16122 | /* Read a Fortran module. */ |
16123 | ||
16124 | static void | |
16125 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
16126 | { | |
16127 | struct die_info *child_die = die->child; | |
530e8392 KB |
16128 | struct type *type; |
16129 | ||
16130 | type = read_type_die (die, cu); | |
16131 | new_symbol (die, type, cu); | |
5d7cb8df | 16132 | |
5d7cb8df JK |
16133 | while (child_die && child_die->tag) |
16134 | { | |
16135 | process_die (child_die, cu); | |
436c571c | 16136 | child_die = child_die->sibling; |
5d7cb8df JK |
16137 | } |
16138 | } | |
16139 | ||
38d518c9 EZ |
16140 | /* Return the name of the namespace represented by DIE. Set |
16141 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
16142 | namespace. */ | |
16143 | ||
16144 | static const char * | |
e142c38c | 16145 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
16146 | { |
16147 | struct die_info *current_die; | |
16148 | const char *name = NULL; | |
16149 | ||
16150 | /* Loop through the extensions until we find a name. */ | |
16151 | ||
16152 | for (current_die = die; | |
16153 | current_die != NULL; | |
f2f0e013 | 16154 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 16155 | { |
96553a0c DE |
16156 | /* We don't use dwarf2_name here so that we can detect the absence |
16157 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 16158 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 16159 | |
38d518c9 EZ |
16160 | if (name != NULL) |
16161 | break; | |
16162 | } | |
16163 | ||
16164 | /* Is it an anonymous namespace? */ | |
16165 | ||
16166 | *is_anonymous = (name == NULL); | |
16167 | if (*is_anonymous) | |
2b1dbab0 | 16168 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
16169 | |
16170 | return name; | |
d9fa45fe DC |
16171 | } |
16172 | ||
c906108c SS |
16173 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
16174 | the user defined type vector. */ | |
16175 | ||
f792889a | 16176 | static struct type * |
e7c27a73 | 16177 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16178 | { |
518817b3 SM |
16179 | struct gdbarch *gdbarch |
16180 | = get_objfile_arch (cu->per_cu->dwarf2_per_objfile->objfile); | |
e7c27a73 | 16181 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 16182 | struct type *type; |
8b2dbe47 KB |
16183 | struct attribute *attr_byte_size; |
16184 | struct attribute *attr_address_class; | |
16185 | int byte_size, addr_class; | |
7e314c57 JK |
16186 | struct type *target_type; |
16187 | ||
16188 | target_type = die_type (die, cu); | |
c906108c | 16189 | |
7e314c57 JK |
16190 | /* The die_type call above may have already set the type for this DIE. */ |
16191 | type = get_die_type (die, cu); | |
16192 | if (type) | |
16193 | return type; | |
16194 | ||
16195 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 16196 | |
e142c38c | 16197 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
16198 | if (attr_byte_size) |
16199 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 16200 | else |
8b2dbe47 KB |
16201 | byte_size = cu_header->addr_size; |
16202 | ||
e142c38c | 16203 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
16204 | if (attr_address_class) |
16205 | addr_class = DW_UNSND (attr_address_class); | |
16206 | else | |
16207 | addr_class = DW_ADDR_none; | |
16208 | ||
2b4424c3 TT |
16209 | ULONGEST alignment = get_alignment (cu, die); |
16210 | ||
16211 | /* If the pointer size, alignment, or address class is different | |
16212 | than the default, create a type variant marked as such and set | |
16213 | the length accordingly. */ | |
16214 | if (TYPE_LENGTH (type) != byte_size | |
16215 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
16216 | && alignment != TYPE_RAW_ALIGN (type)) | |
16217 | || addr_class != DW_ADDR_none) | |
c906108c | 16218 | { |
5e2b427d | 16219 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
16220 | { |
16221 | int type_flags; | |
16222 | ||
849957d9 | 16223 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 16224 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
16225 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
16226 | == 0); | |
8b2dbe47 KB |
16227 | type = make_type_with_address_space (type, type_flags); |
16228 | } | |
16229 | else if (TYPE_LENGTH (type) != byte_size) | |
16230 | { | |
b98664d3 | 16231 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 16232 | } |
2b4424c3 TT |
16233 | else if (TYPE_RAW_ALIGN (type) != alignment) |
16234 | { | |
b98664d3 | 16235 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
16236 | " - DIE at %s [in module %s]"), |
16237 | sect_offset_str (die->sect_off), | |
16238 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
16239 | } | |
6e70227d | 16240 | else |
9a619af0 MS |
16241 | { |
16242 | /* Should we also complain about unhandled address classes? */ | |
16243 | } | |
c906108c | 16244 | } |
8b2dbe47 KB |
16245 | |
16246 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 16247 | set_type_align (type, alignment); |
f792889a | 16248 | return set_die_type (die, type, cu); |
c906108c SS |
16249 | } |
16250 | ||
16251 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
16252 | the user defined type vector. */ | |
16253 | ||
f792889a | 16254 | static struct type * |
e7c27a73 | 16255 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
16256 | { |
16257 | struct type *type; | |
16258 | struct type *to_type; | |
16259 | struct type *domain; | |
16260 | ||
e7c27a73 DJ |
16261 | to_type = die_type (die, cu); |
16262 | domain = die_containing_type (die, cu); | |
0d5de010 | 16263 | |
7e314c57 JK |
16264 | /* The calls above may have already set the type for this DIE. */ |
16265 | type = get_die_type (die, cu); | |
16266 | if (type) | |
16267 | return type; | |
16268 | ||
0d5de010 DJ |
16269 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
16270 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
16271 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
16272 | { | |
518817b3 SM |
16273 | struct type *new_type |
16274 | = alloc_type (cu->per_cu->dwarf2_per_objfile->objfile); | |
7078baeb TT |
16275 | |
16276 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
16277 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
16278 | TYPE_VARARGS (to_type)); | |
16279 | type = lookup_methodptr_type (new_type); | |
16280 | } | |
0d5de010 DJ |
16281 | else |
16282 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 16283 | |
f792889a | 16284 | return set_die_type (die, type, cu); |
c906108c SS |
16285 | } |
16286 | ||
4297a3f0 | 16287 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
16288 | the user defined type vector. */ |
16289 | ||
f792889a | 16290 | static struct type * |
4297a3f0 AV |
16291 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
16292 | enum type_code refcode) | |
c906108c | 16293 | { |
e7c27a73 | 16294 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 16295 | struct type *type, *target_type; |
c906108c SS |
16296 | struct attribute *attr; |
16297 | ||
4297a3f0 AV |
16298 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
16299 | ||
7e314c57 JK |
16300 | target_type = die_type (die, cu); |
16301 | ||
16302 | /* The die_type call above may have already set the type for this DIE. */ | |
16303 | type = get_die_type (die, cu); | |
16304 | if (type) | |
16305 | return type; | |
16306 | ||
4297a3f0 | 16307 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 16308 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16309 | if (attr != nullptr) |
c906108c SS |
16310 | { |
16311 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16312 | } | |
16313 | else | |
16314 | { | |
107d2387 | 16315 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 16316 | } |
2b4424c3 | 16317 | maybe_set_alignment (cu, die, type); |
f792889a | 16318 | return set_die_type (die, type, cu); |
c906108c SS |
16319 | } |
16320 | ||
cf363f18 MW |
16321 | /* Add the given cv-qualifiers to the element type of the array. GCC |
16322 | outputs DWARF type qualifiers that apply to an array, not the | |
16323 | element type. But GDB relies on the array element type to carry | |
16324 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
16325 | specification. */ | |
16326 | ||
16327 | static struct type * | |
16328 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
16329 | struct type *base_type, int cnst, int voltl) | |
16330 | { | |
16331 | struct type *el_type, *inner_array; | |
16332 | ||
16333 | base_type = copy_type (base_type); | |
16334 | inner_array = base_type; | |
16335 | ||
16336 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
16337 | { | |
16338 | TYPE_TARGET_TYPE (inner_array) = | |
16339 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
16340 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
16341 | } | |
16342 | ||
16343 | el_type = TYPE_TARGET_TYPE (inner_array); | |
16344 | cnst |= TYPE_CONST (el_type); | |
16345 | voltl |= TYPE_VOLATILE (el_type); | |
16346 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
16347 | ||
16348 | return set_die_type (die, base_type, cu); | |
16349 | } | |
16350 | ||
f792889a | 16351 | static struct type * |
e7c27a73 | 16352 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16353 | { |
f792889a | 16354 | struct type *base_type, *cv_type; |
c906108c | 16355 | |
e7c27a73 | 16356 | base_type = die_type (die, cu); |
7e314c57 JK |
16357 | |
16358 | /* The die_type call above may have already set the type for this DIE. */ | |
16359 | cv_type = get_die_type (die, cu); | |
16360 | if (cv_type) | |
16361 | return cv_type; | |
16362 | ||
2f608a3a KW |
16363 | /* In case the const qualifier is applied to an array type, the element type |
16364 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
16365 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 16366 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 16367 | |
f792889a DJ |
16368 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
16369 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16370 | } |
16371 | ||
f792889a | 16372 | static struct type * |
e7c27a73 | 16373 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16374 | { |
f792889a | 16375 | struct type *base_type, *cv_type; |
c906108c | 16376 | |
e7c27a73 | 16377 | base_type = die_type (die, cu); |
7e314c57 JK |
16378 | |
16379 | /* The die_type call above may have already set the type for this DIE. */ | |
16380 | cv_type = get_die_type (die, cu); | |
16381 | if (cv_type) | |
16382 | return cv_type; | |
16383 | ||
cf363f18 MW |
16384 | /* In case the volatile qualifier is applied to an array type, the |
16385 | element type is so qualified, not the array type (section 6.7.3 | |
16386 | of C99). */ | |
16387 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
16388 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
16389 | ||
f792889a DJ |
16390 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
16391 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16392 | } |
16393 | ||
06d66ee9 TT |
16394 | /* Handle DW_TAG_restrict_type. */ |
16395 | ||
16396 | static struct type * | |
16397 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
16398 | { | |
16399 | struct type *base_type, *cv_type; | |
16400 | ||
16401 | base_type = die_type (die, cu); | |
16402 | ||
16403 | /* The die_type call above may have already set the type for this DIE. */ | |
16404 | cv_type = get_die_type (die, cu); | |
16405 | if (cv_type) | |
16406 | return cv_type; | |
16407 | ||
16408 | cv_type = make_restrict_type (base_type); | |
16409 | return set_die_type (die, cv_type, cu); | |
16410 | } | |
16411 | ||
a2c2acaf MW |
16412 | /* Handle DW_TAG_atomic_type. */ |
16413 | ||
16414 | static struct type * | |
16415 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
16416 | { | |
16417 | struct type *base_type, *cv_type; | |
16418 | ||
16419 | base_type = die_type (die, cu); | |
16420 | ||
16421 | /* The die_type call above may have already set the type for this DIE. */ | |
16422 | cv_type = get_die_type (die, cu); | |
16423 | if (cv_type) | |
16424 | return cv_type; | |
16425 | ||
16426 | cv_type = make_atomic_type (base_type); | |
16427 | return set_die_type (die, cv_type, cu); | |
16428 | } | |
16429 | ||
c906108c SS |
16430 | /* Extract all information from a DW_TAG_string_type DIE and add to |
16431 | the user defined type vector. It isn't really a user defined type, | |
16432 | but it behaves like one, with other DIE's using an AT_user_def_type | |
16433 | attribute to reference it. */ | |
16434 | ||
f792889a | 16435 | static struct type * |
e7c27a73 | 16436 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16437 | { |
518817b3 | 16438 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3b7538c0 | 16439 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
16440 | struct type *type, *range_type, *index_type, *char_type; |
16441 | struct attribute *attr; | |
216a7e6b AB |
16442 | struct dynamic_prop prop; |
16443 | bool length_is_constant = true; | |
16444 | LONGEST length; | |
16445 | ||
16446 | /* There are a couple of places where bit sizes might be made use of | |
16447 | when parsing a DW_TAG_string_type, however, no producer that we know | |
16448 | of make use of these. Handling bit sizes that are a multiple of the | |
16449 | byte size is easy enough, but what about other bit sizes? Lets deal | |
16450 | with that problem when we have to. Warn about these attributes being | |
16451 | unsupported, then parse the type and ignore them like we always | |
16452 | have. */ | |
16453 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
16454 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
16455 | { | |
16456 | static bool warning_printed = false; | |
16457 | if (!warning_printed) | |
16458 | { | |
16459 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
16460 | "currently supported on DW_TAG_string_type.")); | |
16461 | warning_printed = true; | |
16462 | } | |
16463 | } | |
c906108c | 16464 | |
e142c38c | 16465 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 16466 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
16467 | { |
16468 | /* The string length describes the location at which the length of | |
16469 | the string can be found. The size of the length field can be | |
16470 | specified with one of the attributes below. */ | |
16471 | struct type *prop_type; | |
16472 | struct attribute *len | |
16473 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
16474 | if (len == nullptr) | |
16475 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 16476 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
16477 | { |
16478 | /* Pass 0 as the default as we know this attribute is constant | |
16479 | and the default value will not be returned. */ | |
0826b30a | 16480 | LONGEST sz = len->constant_value (0); |
09ba997f | 16481 | prop_type = cu->per_cu->int_type (sz, true); |
216a7e6b AB |
16482 | } |
16483 | else | |
16484 | { | |
16485 | /* If the size is not specified then we assume it is the size of | |
16486 | an address on this target. */ | |
09ba997f | 16487 | prop_type = cu->per_cu->addr_sized_int_type (true); |
216a7e6b AB |
16488 | } |
16489 | ||
16490 | /* Convert the attribute into a dynamic property. */ | |
16491 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
16492 | length = 1; | |
16493 | else | |
16494 | length_is_constant = false; | |
16495 | } | |
16496 | else if (attr != nullptr) | |
16497 | { | |
16498 | /* This DW_AT_string_length just contains the length with no | |
16499 | indirection. There's no need to create a dynamic property in this | |
16500 | case. Pass 0 for the default value as we know it will not be | |
16501 | returned in this case. */ | |
0826b30a | 16502 | length = attr->constant_value (0); |
216a7e6b AB |
16503 | } |
16504 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 16505 | { |
216a7e6b | 16506 | /* We don't currently support non-constant byte sizes for strings. */ |
0826b30a | 16507 | length = attr->constant_value (1); |
c906108c SS |
16508 | } |
16509 | else | |
16510 | { | |
216a7e6b AB |
16511 | /* Use 1 as a fallback length if we have nothing else. */ |
16512 | length = 1; | |
c906108c | 16513 | } |
6ccb9162 | 16514 | |
46bf5051 | 16515 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
16516 | if (length_is_constant) |
16517 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
16518 | else | |
16519 | { | |
16520 | struct dynamic_prop low_bound; | |
16521 | ||
16522 | low_bound.kind = PROP_CONST; | |
16523 | low_bound.data.const_val = 1; | |
16524 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); | |
16525 | } | |
3b7538c0 UW |
16526 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
16527 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 16528 | |
f792889a | 16529 | return set_die_type (die, type, cu); |
c906108c SS |
16530 | } |
16531 | ||
4d804846 JB |
16532 | /* Assuming that DIE corresponds to a function, returns nonzero |
16533 | if the function is prototyped. */ | |
16534 | ||
16535 | static int | |
16536 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
16537 | { | |
16538 | struct attribute *attr; | |
16539 | ||
16540 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
16541 | if (attr && (DW_UNSND (attr) != 0)) | |
16542 | return 1; | |
16543 | ||
16544 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 16545 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
16546 | languages that allow unprototyped functions (Eg: Objective C). |
16547 | For all other languages, assume that functions are always | |
16548 | prototyped. */ | |
16549 | if (cu->language != language_c | |
16550 | && cu->language != language_objc | |
16551 | && cu->language != language_opencl) | |
16552 | return 1; | |
16553 | ||
16554 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
16555 | prototyped and unprototyped functions; default to prototyped, | |
16556 | since that is more common in modern code (and RealView warns | |
16557 | about unprototyped functions). */ | |
16558 | if (producer_is_realview (cu->producer)) | |
16559 | return 1; | |
16560 | ||
16561 | return 0; | |
16562 | } | |
16563 | ||
c906108c SS |
16564 | /* Handle DIES due to C code like: |
16565 | ||
16566 | struct foo | |
c5aa993b JM |
16567 | { |
16568 | int (*funcp)(int a, long l); | |
16569 | int b; | |
16570 | }; | |
c906108c | 16571 | |
0963b4bd | 16572 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 16573 | |
f792889a | 16574 | static struct type * |
e7c27a73 | 16575 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16576 | { |
518817b3 | 16577 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0963b4bd MS |
16578 | struct type *type; /* Type that this function returns. */ |
16579 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
16580 | struct attribute *attr; |
16581 | ||
e7c27a73 | 16582 | type = die_type (die, cu); |
7e314c57 JK |
16583 | |
16584 | /* The die_type call above may have already set the type for this DIE. */ | |
16585 | ftype = get_die_type (die, cu); | |
16586 | if (ftype) | |
16587 | return ftype; | |
16588 | ||
0c8b41f1 | 16589 | ftype = lookup_function_type (type); |
c906108c | 16590 | |
4d804846 | 16591 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 16592 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 16593 | |
c055b101 CV |
16594 | /* Store the calling convention in the type if it's available in |
16595 | the subroutine die. Otherwise set the calling convention to | |
16596 | the default value DW_CC_normal. */ | |
16597 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf TBA |
16598 | if (attr != nullptr |
16599 | && is_valid_DW_AT_calling_convention_for_subroutine (DW_UNSND (attr))) | |
16600 | TYPE_CALLING_CONVENTION (ftype) | |
16601 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
54fcddd0 UW |
16602 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
16603 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
16604 | else | |
16605 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 16606 | |
743649fd MW |
16607 | /* Record whether the function returns normally to its caller or not |
16608 | if the DWARF producer set that information. */ | |
16609 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
16610 | if (attr && (DW_UNSND (attr) != 0)) | |
16611 | TYPE_NO_RETURN (ftype) = 1; | |
16612 | ||
76c10ea2 GM |
16613 | /* We need to add the subroutine type to the die immediately so |
16614 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 16615 | declared as the same subroutine type. */ |
76c10ea2 | 16616 | set_die_type (die, ftype, cu); |
6e70227d | 16617 | |
639d11d3 | 16618 | if (die->child != NULL) |
c906108c | 16619 | { |
bb5ed363 | 16620 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 16621 | struct die_info *child_die; |
8072405b | 16622 | int nparams, iparams; |
c906108c SS |
16623 | |
16624 | /* Count the number of parameters. | |
16625 | FIXME: GDB currently ignores vararg functions, but knows about | |
16626 | vararg member functions. */ | |
8072405b | 16627 | nparams = 0; |
639d11d3 | 16628 | child_die = die->child; |
c906108c SS |
16629 | while (child_die && child_die->tag) |
16630 | { | |
16631 | if (child_die->tag == DW_TAG_formal_parameter) | |
16632 | nparams++; | |
16633 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 16634 | TYPE_VARARGS (ftype) = 1; |
436c571c | 16635 | child_die = child_die->sibling; |
c906108c SS |
16636 | } |
16637 | ||
16638 | /* Allocate storage for parameters and fill them in. */ | |
16639 | TYPE_NFIELDS (ftype) = nparams; | |
16640 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 16641 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 16642 | |
8072405b JK |
16643 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
16644 | even if we error out during the parameters reading below. */ | |
16645 | for (iparams = 0; iparams < nparams; iparams++) | |
16646 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
16647 | ||
16648 | iparams = 0; | |
639d11d3 | 16649 | child_die = die->child; |
c906108c SS |
16650 | while (child_die && child_die->tag) |
16651 | { | |
16652 | if (child_die->tag == DW_TAG_formal_parameter) | |
16653 | { | |
3ce3b1ba PA |
16654 | struct type *arg_type; |
16655 | ||
16656 | /* DWARF version 2 has no clean way to discern C++ | |
16657 | static and non-static member functions. G++ helps | |
16658 | GDB by marking the first parameter for non-static | |
16659 | member functions (which is the this pointer) as | |
16660 | artificial. We pass this information to | |
16661 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
16662 | ||
16663 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
16664 | 4.5 does not yet generate. */ | |
e142c38c | 16665 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 16666 | if (attr != nullptr) |
c906108c SS |
16667 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); |
16668 | else | |
9c37b5ae | 16669 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
16670 | arg_type = die_type (child_die, cu); |
16671 | ||
16672 | /* RealView does not mark THIS as const, which the testsuite | |
16673 | expects. GCC marks THIS as const in method definitions, | |
16674 | but not in the class specifications (GCC PR 43053). */ | |
16675 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
16676 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
16677 | { | |
16678 | int is_this = 0; | |
16679 | struct dwarf2_cu *arg_cu = cu; | |
16680 | const char *name = dwarf2_name (child_die, cu); | |
16681 | ||
16682 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 16683 | if (attr != nullptr) |
3ce3b1ba PA |
16684 | { |
16685 | /* If the compiler emits this, use it. */ | |
16686 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
16687 | is_this = 1; | |
16688 | } | |
16689 | else if (name && strcmp (name, "this") == 0) | |
16690 | /* Function definitions will have the argument names. */ | |
16691 | is_this = 1; | |
16692 | else if (name == NULL && iparams == 0) | |
16693 | /* Declarations may not have the names, so like | |
16694 | elsewhere in GDB, assume an artificial first | |
16695 | argument is "this". */ | |
16696 | is_this = 1; | |
16697 | ||
16698 | if (is_this) | |
16699 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
16700 | arg_type, 0); | |
16701 | } | |
16702 | ||
16703 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
16704 | iparams++; |
16705 | } | |
436c571c | 16706 | child_die = child_die->sibling; |
c906108c SS |
16707 | } |
16708 | } | |
16709 | ||
76c10ea2 | 16710 | return ftype; |
c906108c SS |
16711 | } |
16712 | ||
f792889a | 16713 | static struct type * |
e7c27a73 | 16714 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16715 | { |
518817b3 | 16716 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16717 | const char *name = NULL; |
3c8e0968 | 16718 | struct type *this_type, *target_type; |
c906108c | 16719 | |
94af9270 | 16720 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
16721 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
16722 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 16723 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
16724 | target_type = die_type (die, cu); |
16725 | if (target_type != this_type) | |
16726 | TYPE_TARGET_TYPE (this_type) = target_type; | |
16727 | else | |
16728 | { | |
16729 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
16730 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 16731 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
16732 | "- DIE at %s [in module %s]"), |
16733 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
16734 | TYPE_TARGET_TYPE (this_type) = NULL; |
16735 | } | |
e4003a34 TV |
16736 | if (name == NULL) |
16737 | { | |
16738 | /* Gcc-7 and before supports -feliminate-dwarf2-dups, which generates | |
16739 | anonymous typedefs, which is, strictly speaking, invalid DWARF. | |
16740 | Handle these by just returning the target type, rather than | |
16741 | constructing an anonymous typedef type and trying to handle this | |
16742 | elsewhere. */ | |
16743 | set_die_type (die, target_type, cu); | |
16744 | return target_type; | |
16745 | } | |
f792889a | 16746 | return this_type; |
c906108c SS |
16747 | } |
16748 | ||
9b790ce7 UW |
16749 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
16750 | (which may be different from NAME) to the architecture back-end to allow | |
16751 | it to guess the correct format if necessary. */ | |
16752 | ||
16753 | static struct type * | |
16754 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 16755 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 UW |
16756 | { |
16757 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
16758 | const struct floatformat **format; | |
16759 | struct type *type; | |
16760 | ||
16761 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
16762 | if (format) | |
103a685e | 16763 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 16764 | else |
77b7c781 | 16765 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
16766 | |
16767 | return type; | |
16768 | } | |
16769 | ||
eb77c9df AB |
16770 | /* Allocate an integer type of size BITS and name NAME. */ |
16771 | ||
16772 | static struct type * | |
16773 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
16774 | int bits, int unsigned_p, const char *name) | |
16775 | { | |
16776 | struct type *type; | |
16777 | ||
16778 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
16779 | instead of using DW_TAG_unspecified_type. This has been seen on | |
16780 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
16781 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
16782 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
16783 | type = objfile_type (objfile)->builtin_void; |
16784 | else | |
16785 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
16786 | ||
16787 | return type; | |
16788 | } | |
16789 | ||
8bdc1658 AB |
16790 | /* Initialise and return a floating point type of size BITS suitable for |
16791 | use as a component of a complex number. The NAME_HINT is passed through | |
16792 | when initialising the floating point type and is the name of the complex | |
16793 | type. | |
16794 | ||
16795 | As DWARF doesn't currently provide an explicit name for the components | |
16796 | of a complex number, but it can be helpful to have these components | |
16797 | named, we try to select a suitable name based on the size of the | |
16798 | component. */ | |
16799 | static struct type * | |
16800 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
16801 | struct objfile *objfile, | |
103a685e TT |
16802 | int bits, const char *name_hint, |
16803 | enum bfd_endian byte_order) | |
8bdc1658 AB |
16804 | { |
16805 | gdbarch *gdbarch = get_objfile_arch (objfile); | |
16806 | struct type *tt = nullptr; | |
16807 | ||
35add35e AB |
16808 | /* Try to find a suitable floating point builtin type of size BITS. |
16809 | We're going to use the name of this type as the name for the complex | |
16810 | target type that we are about to create. */ | |
1db455a7 | 16811 | switch (cu->language) |
8bdc1658 | 16812 | { |
1db455a7 AB |
16813 | case language_fortran: |
16814 | switch (bits) | |
16815 | { | |
16816 | case 32: | |
16817 | tt = builtin_f_type (gdbarch)->builtin_real; | |
16818 | break; | |
16819 | case 64: | |
16820 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
16821 | break; | |
16822 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
16823 | case 128: | |
16824 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
16825 | break; | |
16826 | } | |
8bdc1658 | 16827 | break; |
1db455a7 AB |
16828 | default: |
16829 | switch (bits) | |
16830 | { | |
16831 | case 32: | |
16832 | tt = builtin_type (gdbarch)->builtin_float; | |
16833 | break; | |
16834 | case 64: | |
16835 | tt = builtin_type (gdbarch)->builtin_double; | |
16836 | break; | |
16837 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
16838 | case 128: | |
16839 | tt = builtin_type (gdbarch)->builtin_long_double; | |
16840 | break; | |
16841 | } | |
8bdc1658 AB |
16842 | break; |
16843 | } | |
16844 | ||
35add35e AB |
16845 | /* If the type we found doesn't match the size we were looking for, then |
16846 | pretend we didn't find a type at all, the complex target type we | |
16847 | create will then be nameless. */ | |
a12e5744 | 16848 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
16849 | tt = nullptr; |
16850 | ||
8bdc1658 | 16851 | const char *name = (tt == nullptr) ? nullptr : TYPE_NAME (tt); |
103a685e | 16852 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
16853 | } |
16854 | ||
c906108c SS |
16855 | /* Find a representation of a given base type and install |
16856 | it in the TYPE field of the die. */ | |
16857 | ||
f792889a | 16858 | static struct type * |
e7c27a73 | 16859 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16860 | { |
518817b3 | 16861 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
16862 | struct type *type; |
16863 | struct attribute *attr; | |
19f392bc | 16864 | int encoding = 0, bits = 0; |
15d034d0 | 16865 | const char *name; |
34877895 | 16866 | gdbarch *arch; |
c906108c | 16867 | |
e142c38c | 16868 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
435d3d88 | 16869 | if (attr != nullptr) |
34877895 | 16870 | encoding = DW_UNSND (attr); |
e142c38c | 16871 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16872 | if (attr != nullptr) |
34877895 | 16873 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
39cbfefa | 16874 | name = dwarf2_name (die, cu); |
6ccb9162 | 16875 | if (!name) |
34877895 | 16876 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e TT |
16877 | |
16878 | arch = get_objfile_arch (objfile); | |
16879 | enum bfd_endian byte_order = gdbarch_byte_order (arch); | |
16880 | ||
34877895 PJ |
16881 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
16882 | if (attr) | |
103a685e TT |
16883 | { |
16884 | int endianity = DW_UNSND (attr); | |
16885 | ||
16886 | switch (endianity) | |
16887 | { | |
16888 | case DW_END_big: | |
16889 | byte_order = BFD_ENDIAN_BIG; | |
16890 | break; | |
16891 | case DW_END_little: | |
16892 | byte_order = BFD_ENDIAN_LITTLE; | |
16893 | break; | |
16894 | default: | |
16895 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
16896 | break; | |
16897 | } | |
16898 | } | |
6ccb9162 UW |
16899 | |
16900 | switch (encoding) | |
c906108c | 16901 | { |
6ccb9162 UW |
16902 | case DW_ATE_address: |
16903 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 16904 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 16905 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
16906 | break; |
16907 | case DW_ATE_boolean: | |
19f392bc | 16908 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
16909 | break; |
16910 | case DW_ATE_complex_float: | |
103a685e TT |
16911 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
16912 | byte_order); | |
93689ce9 TT |
16913 | if (TYPE_CODE (type) == TYPE_CODE_ERROR) |
16914 | { | |
16915 | if (name == nullptr) | |
16916 | { | |
16917 | struct obstack *obstack | |
16918 | = &cu->per_cu->dwarf2_per_objfile->objfile->objfile_obstack; | |
16919 | name = obconcat (obstack, "_Complex ", TYPE_NAME (type), | |
16920 | nullptr); | |
16921 | } | |
16922 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); | |
16923 | } | |
16924 | else | |
16925 | type = init_complex_type (name, type); | |
6ccb9162 UW |
16926 | break; |
16927 | case DW_ATE_decimal_float: | |
19f392bc | 16928 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
16929 | break; |
16930 | case DW_ATE_float: | |
103a685e | 16931 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
16932 | break; |
16933 | case DW_ATE_signed: | |
eb77c9df | 16934 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
16935 | break; |
16936 | case DW_ATE_unsigned: | |
3b2b8fea TT |
16937 | if (cu->language == language_fortran |
16938 | && name | |
61012eef | 16939 | && startswith (name, "character(")) |
19f392bc UW |
16940 | type = init_character_type (objfile, bits, 1, name); |
16941 | else | |
eb77c9df | 16942 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
16943 | break; |
16944 | case DW_ATE_signed_char: | |
6e70227d | 16945 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
16946 | || cu->language == language_pascal |
16947 | || cu->language == language_fortran) | |
19f392bc UW |
16948 | type = init_character_type (objfile, bits, 0, name); |
16949 | else | |
eb77c9df | 16950 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
16951 | break; |
16952 | case DW_ATE_unsigned_char: | |
868a0084 | 16953 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 16954 | || cu->language == language_pascal |
c44af4eb TT |
16955 | || cu->language == language_fortran |
16956 | || cu->language == language_rust) | |
19f392bc UW |
16957 | type = init_character_type (objfile, bits, 1, name); |
16958 | else | |
eb77c9df | 16959 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 16960 | break; |
75079b2b | 16961 | case DW_ATE_UTF: |
53e710ac | 16962 | { |
53e710ac PA |
16963 | if (bits == 16) |
16964 | type = builtin_type (arch)->builtin_char16; | |
16965 | else if (bits == 32) | |
16966 | type = builtin_type (arch)->builtin_char32; | |
16967 | else | |
16968 | { | |
b98664d3 | 16969 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 16970 | bits); |
eb77c9df | 16971 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
16972 | } |
16973 | return set_die_type (die, type, cu); | |
16974 | } | |
75079b2b TT |
16975 | break; |
16976 | ||
6ccb9162 | 16977 | default: |
b98664d3 | 16978 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 16979 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 16980 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 16981 | break; |
c906108c | 16982 | } |
6ccb9162 | 16983 | |
0114d602 | 16984 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 16985 | TYPE_NOSIGN (type) = 1; |
0114d602 | 16986 | |
2b4424c3 TT |
16987 | maybe_set_alignment (cu, die, type); |
16988 | ||
103a685e | 16989 | TYPE_ENDIANITY_NOT_DEFAULT (type) = gdbarch_byte_order (arch) != byte_order; |
34877895 | 16990 | |
f792889a | 16991 | return set_die_type (die, type, cu); |
c906108c SS |
16992 | } |
16993 | ||
80180f79 SA |
16994 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
16995 | resulting value of the attribute into struct bound_prop. | |
16996 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
16997 | ||
16998 | static int | |
16999 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
17000 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
17001 | struct type *default_type) | |
80180f79 SA |
17002 | { |
17003 | struct dwarf2_property_baton *baton; | |
518817b3 SM |
17004 | struct obstack *obstack |
17005 | = &cu->per_cu->dwarf2_per_objfile->objfile->objfile_obstack; | |
80180f79 | 17006 | |
9a49df9d AB |
17007 | gdb_assert (default_type != NULL); |
17008 | ||
80180f79 SA |
17009 | if (attr == NULL || prop == NULL) |
17010 | return 0; | |
17011 | ||
4fc6c0d5 | 17012 | if (attr->form_is_block ()) |
80180f79 | 17013 | { |
8d749320 | 17014 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17015 | baton->property_type = default_type; |
80180f79 SA |
17016 | baton->locexpr.per_cu = cu->per_cu; |
17017 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
17018 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
216a7e6b AB |
17019 | switch (attr->name) |
17020 | { | |
17021 | case DW_AT_string_length: | |
17022 | baton->locexpr.is_reference = true; | |
17023 | break; | |
17024 | default: | |
17025 | baton->locexpr.is_reference = false; | |
17026 | break; | |
17027 | } | |
80180f79 SA |
17028 | prop->data.baton = baton; |
17029 | prop->kind = PROP_LOCEXPR; | |
17030 | gdb_assert (prop->data.baton != NULL); | |
17031 | } | |
cd6c91b4 | 17032 | else if (attr->form_is_ref ()) |
80180f79 SA |
17033 | { |
17034 | struct dwarf2_cu *target_cu = cu; | |
17035 | struct die_info *target_die; | |
17036 | struct attribute *target_attr; | |
17037 | ||
17038 | target_die = follow_die_ref (die, attr, &target_cu); | |
17039 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17040 | if (target_attr == NULL) |
17041 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17042 | target_cu); | |
80180f79 SA |
17043 | if (target_attr == NULL) |
17044 | return 0; | |
17045 | ||
df25ebbd | 17046 | switch (target_attr->name) |
80180f79 | 17047 | { |
df25ebbd | 17048 | case DW_AT_location: |
cd6c91b4 | 17049 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 17050 | { |
8d749320 | 17051 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17052 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17053 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
17054 | prop->data.baton = baton; | |
17055 | prop->kind = PROP_LOCLIST; | |
17056 | gdb_assert (prop->data.baton != NULL); | |
17057 | } | |
4fc6c0d5 | 17058 | else if (target_attr->form_is_block ()) |
df25ebbd | 17059 | { |
8d749320 | 17060 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17061 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17062 | baton->locexpr.per_cu = cu->per_cu; |
17063 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
17064 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
9a49df9d | 17065 | baton->locexpr.is_reference = true; |
df25ebbd JB |
17066 | prop->data.baton = baton; |
17067 | prop->kind = PROP_LOCEXPR; | |
17068 | gdb_assert (prop->data.baton != NULL); | |
17069 | } | |
17070 | else | |
17071 | { | |
17072 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17073 | "dynamic property"); | |
17074 | return 0; | |
17075 | } | |
17076 | break; | |
17077 | case DW_AT_data_member_location: | |
17078 | { | |
17079 | LONGEST offset; | |
17080 | ||
17081 | if (!handle_data_member_location (target_die, target_cu, | |
17082 | &offset)) | |
17083 | return 0; | |
17084 | ||
8d749320 | 17085 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17086 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 17087 | target_cu); |
df25ebbd JB |
17088 | baton->offset_info.offset = offset; |
17089 | baton->offset_info.type = die_type (target_die, target_cu); | |
17090 | prop->data.baton = baton; | |
17091 | prop->kind = PROP_ADDR_OFFSET; | |
17092 | break; | |
17093 | } | |
80180f79 SA |
17094 | } |
17095 | } | |
cd6c91b4 | 17096 | else if (attr->form_is_constant ()) |
80180f79 | 17097 | { |
0826b30a | 17098 | prop->data.const_val = attr->constant_value (0); |
80180f79 SA |
17099 | prop->kind = PROP_CONST; |
17100 | } | |
17101 | else | |
17102 | { | |
17103 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
17104 | dwarf2_name (die, cu)); | |
17105 | return 0; | |
17106 | } | |
17107 | ||
17108 | return 1; | |
17109 | } | |
17110 | ||
09ba997f | 17111 | /* See read.h. */ |
9a49df9d | 17112 | |
09ba997f TT |
17113 | struct type * |
17114 | dwarf2_per_cu_data::int_type (int size_in_bytes, bool unsigned_p) const | |
9a49df9d | 17115 | { |
09ba997f | 17116 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
9a49df9d AB |
17117 | struct type *int_type; |
17118 | ||
17119 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
17120 | #define TRY_TYPE(F) \ |
17121 | int_type = (unsigned_p \ | |
17122 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
17123 | : objfile_type (objfile)->builtin_ ## F); \ | |
17124 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
17125 | return int_type |
17126 | ||
17127 | TRY_TYPE (char); | |
17128 | TRY_TYPE (short); | |
17129 | TRY_TYPE (int); | |
17130 | TRY_TYPE (long); | |
17131 | TRY_TYPE (long_long); | |
17132 | ||
17133 | #undef TRY_TYPE | |
17134 | ||
17135 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
17136 | } | |
17137 | ||
09ba997f | 17138 | /* See read.h. */ |
11a8b164 | 17139 | |
09ba997f TT |
17140 | struct type * |
17141 | dwarf2_per_cu_data::addr_sized_int_type (bool unsigned_p) const | |
11a8b164 | 17142 | { |
09ba997f TT |
17143 | int addr_size = this->addr_size (); |
17144 | return int_type (addr_size, unsigned_p); | |
11a8b164 AB |
17145 | } |
17146 | ||
b86352cf AB |
17147 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
17148 | present (which is valid) then compute the default type based on the | |
17149 | compilation units address size. */ | |
17150 | ||
17151 | static struct type * | |
17152 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
17153 | { | |
17154 | struct type *index_type = die_type (die, cu); | |
17155 | ||
17156 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
17157 | without specifying a base type. | |
17158 | In that case, the base type must be set to the type of | |
17159 | the lower bound, upper bound or count, in that order, if any of these | |
17160 | three attributes references an object that has a type. | |
17161 | If no base type is found, the Dwarf-2 specifications say that | |
17162 | a signed integer type of size equal to the size of an address should | |
17163 | be used. | |
17164 | For the following C code: `extern char gdb_int [];' | |
17165 | GCC produces an empty range DIE. | |
17166 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
17167 | high bound or count are not yet handled by this code. */ | |
17168 | if (TYPE_CODE (index_type) == TYPE_CODE_VOID) | |
09ba997f | 17169 | index_type = cu->per_cu->addr_sized_int_type (false); |
b86352cf AB |
17170 | |
17171 | return index_type; | |
17172 | } | |
17173 | ||
a02abb62 JB |
17174 | /* Read the given DW_AT_subrange DIE. */ |
17175 | ||
f792889a | 17176 | static struct type * |
a02abb62 JB |
17177 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
17178 | { | |
4c9ad8c2 | 17179 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
17180 | struct type *range_type; |
17181 | struct attribute *attr; | |
729efb13 | 17182 | struct dynamic_prop low, high; |
4fae6e18 | 17183 | int low_default_is_valid; |
c451ebe5 | 17184 | int high_bound_is_count = 0; |
15d034d0 | 17185 | const char *name; |
d359392f | 17186 | ULONGEST negative_mask; |
e77813c8 | 17187 | |
b86352cf AB |
17188 | orig_base_type = read_subrange_index_type (die, cu); |
17189 | ||
4c9ad8c2 TT |
17190 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
17191 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
17192 | creating the range type, but we use the result of check_typedef | |
17193 | when examining properties of the type. */ | |
17194 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 17195 | |
7e314c57 JK |
17196 | /* The die_type call above may have already set the type for this DIE. */ |
17197 | range_type = get_die_type (die, cu); | |
17198 | if (range_type) | |
17199 | return range_type; | |
17200 | ||
729efb13 SA |
17201 | low.kind = PROP_CONST; |
17202 | high.kind = PROP_CONST; | |
17203 | high.data.const_val = 0; | |
17204 | ||
4fae6e18 JK |
17205 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
17206 | omitting DW_AT_lower_bound. */ | |
17207 | switch (cu->language) | |
6e70227d | 17208 | { |
4fae6e18 JK |
17209 | case language_c: |
17210 | case language_cplus: | |
729efb13 | 17211 | low.data.const_val = 0; |
4fae6e18 JK |
17212 | low_default_is_valid = 1; |
17213 | break; | |
17214 | case language_fortran: | |
729efb13 | 17215 | low.data.const_val = 1; |
4fae6e18 JK |
17216 | low_default_is_valid = 1; |
17217 | break; | |
17218 | case language_d: | |
4fae6e18 | 17219 | case language_objc: |
c44af4eb | 17220 | case language_rust: |
729efb13 | 17221 | low.data.const_val = 0; |
4fae6e18 JK |
17222 | low_default_is_valid = (cu->header.version >= 4); |
17223 | break; | |
17224 | case language_ada: | |
17225 | case language_m2: | |
17226 | case language_pascal: | |
729efb13 | 17227 | low.data.const_val = 1; |
4fae6e18 JK |
17228 | low_default_is_valid = (cu->header.version >= 4); |
17229 | break; | |
17230 | default: | |
729efb13 | 17231 | low.data.const_val = 0; |
4fae6e18 JK |
17232 | low_default_is_valid = 0; |
17233 | break; | |
a02abb62 JB |
17234 | } |
17235 | ||
e142c38c | 17236 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 17237 | if (attr != nullptr) |
9a49df9d | 17238 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 17239 | else if (!low_default_is_valid) |
b98664d3 | 17240 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
17241 | "- DIE at %s [in module %s]"), |
17242 | sect_offset_str (die->sect_off), | |
518817b3 | 17243 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a02abb62 | 17244 | |
506f5c41 TV |
17245 | struct attribute *attr_ub, *attr_count; |
17246 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 17247 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 17248 | { |
506f5c41 | 17249 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 17250 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 17251 | { |
c451ebe5 SA |
17252 | /* If bounds are constant do the final calculation here. */ |
17253 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
17254 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
17255 | else | |
17256 | high_bound_is_count = 1; | |
c2ff108b | 17257 | } |
506f5c41 TV |
17258 | else |
17259 | { | |
17260 | if (attr_ub != NULL) | |
17261 | complaint (_("Unresolved DW_AT_upper_bound " | |
17262 | "- DIE at %s [in module %s]"), | |
17263 | sect_offset_str (die->sect_off), | |
17264 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17265 | if (attr_count != NULL) | |
17266 | complaint (_("Unresolved DW_AT_count " | |
17267 | "- DIE at %s [in module %s]"), | |
17268 | sect_offset_str (die->sect_off), | |
17269 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17270 | } | |
e77813c8 | 17271 | } |
a02abb62 | 17272 | |
4e962e74 TT |
17273 | LONGEST bias = 0; |
17274 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 17275 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
0826b30a | 17276 | bias = bias_attr->constant_value (0); |
4e962e74 | 17277 | |
dbb9c2b1 JB |
17278 | /* Normally, the DWARF producers are expected to use a signed |
17279 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
17280 | But this is unfortunately not always the case, as witnessed | |
17281 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
17282 | is used instead. To work around that ambiguity, we treat | |
17283 | the bounds as signed, and thus sign-extend their values, when | |
17284 | the base type is signed. */ | |
6e70227d | 17285 | negative_mask = |
d359392f | 17286 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
17287 | if (low.kind == PROP_CONST |
17288 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
17289 | low.data.const_val |= negative_mask; | |
17290 | if (high.kind == PROP_CONST | |
17291 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
17292 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 17293 | |
5bbd8269 AB |
17294 | /* Check for bit and byte strides. */ |
17295 | struct dynamic_prop byte_stride_prop; | |
17296 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
17297 | if (attr_byte_stride != nullptr) | |
17298 | { | |
09ba997f | 17299 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
5bbd8269 AB |
17300 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, |
17301 | prop_type); | |
17302 | } | |
17303 | ||
17304 | struct dynamic_prop bit_stride_prop; | |
17305 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
17306 | if (attr_bit_stride != nullptr) | |
17307 | { | |
17308 | /* It only makes sense to have either a bit or byte stride. */ | |
17309 | if (attr_byte_stride != nullptr) | |
17310 | { | |
17311 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
17312 | "- DIE at %s [in module %s]"), | |
17313 | sect_offset_str (die->sect_off), | |
17314 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17315 | attr_bit_stride = nullptr; | |
17316 | } | |
17317 | else | |
17318 | { | |
09ba997f | 17319 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
5bbd8269 AB |
17320 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, |
17321 | prop_type); | |
17322 | } | |
17323 | } | |
17324 | ||
17325 | if (attr_byte_stride != nullptr | |
17326 | || attr_bit_stride != nullptr) | |
17327 | { | |
17328 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
17329 | struct dynamic_prop *stride | |
17330 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
17331 | ||
17332 | range_type | |
17333 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
17334 | &high, bias, stride, byte_stride_p); | |
17335 | } | |
17336 | else | |
17337 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 17338 | |
c451ebe5 SA |
17339 | if (high_bound_is_count) |
17340 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
17341 | ||
c2ff108b JK |
17342 | /* Ada expects an empty array on no boundary attributes. */ |
17343 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 17344 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 17345 | |
39cbfefa DJ |
17346 | name = dwarf2_name (die, cu); |
17347 | if (name) | |
17348 | TYPE_NAME (range_type) = name; | |
6e70227d | 17349 | |
e142c38c | 17350 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17351 | if (attr != nullptr) |
a02abb62 JB |
17352 | TYPE_LENGTH (range_type) = DW_UNSND (attr); |
17353 | ||
2b4424c3 TT |
17354 | maybe_set_alignment (cu, die, range_type); |
17355 | ||
7e314c57 JK |
17356 | set_die_type (die, range_type, cu); |
17357 | ||
17358 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17359 | set_descriptive_type (range_type, die, cu); |
17360 | ||
7e314c57 | 17361 | return range_type; |
a02abb62 | 17362 | } |
6e70227d | 17363 | |
f792889a | 17364 | static struct type * |
81a17f79 JB |
17365 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
17366 | { | |
17367 | struct type *type; | |
81a17f79 | 17368 | |
518817b3 SM |
17369 | type = init_type (cu->per_cu->dwarf2_per_objfile->objfile, TYPE_CODE_VOID,0, |
17370 | NULL); | |
0114d602 | 17371 | TYPE_NAME (type) = dwarf2_name (die, cu); |
81a17f79 | 17372 | |
74a2f8ff | 17373 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 17374 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
17375 | such a type, we treat it as a stub, and try to resolve it later on, |
17376 | when needed. */ | |
17377 | if (cu->language == language_ada) | |
17378 | TYPE_STUB (type) = 1; | |
17379 | ||
f792889a | 17380 | return set_die_type (die, type, cu); |
81a17f79 | 17381 | } |
a02abb62 | 17382 | |
639d11d3 DC |
17383 | /* Read a single die and all its descendents. Set the die's sibling |
17384 | field to NULL; set other fields in the die correctly, and set all | |
17385 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
17386 | location of the info_ptr after reading all of those dies. PARENT | |
17387 | is the parent of the die in question. */ | |
17388 | ||
17389 | static struct die_info * | |
dee91e82 | 17390 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
17391 | const gdb_byte *info_ptr, |
17392 | const gdb_byte **new_info_ptr, | |
dee91e82 | 17393 | struct die_info *parent) |
639d11d3 DC |
17394 | { |
17395 | struct die_info *die; | |
d521ce57 | 17396 | const gdb_byte *cur_ptr; |
639d11d3 | 17397 | |
3e225074 | 17398 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, 0); |
1d325ec1 DJ |
17399 | if (die == NULL) |
17400 | { | |
17401 | *new_info_ptr = cur_ptr; | |
17402 | return NULL; | |
17403 | } | |
93311388 | 17404 | store_in_ref_table (die, reader->cu); |
639d11d3 | 17405 | |
3e225074 | 17406 | if (die->has_children) |
bf6af496 | 17407 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
17408 | else |
17409 | { | |
17410 | die->child = NULL; | |
17411 | *new_info_ptr = cur_ptr; | |
17412 | } | |
17413 | ||
17414 | die->sibling = NULL; | |
17415 | die->parent = parent; | |
17416 | return die; | |
17417 | } | |
17418 | ||
17419 | /* Read a die, all of its descendents, and all of its siblings; set | |
17420 | all of the fields of all of the dies correctly. Arguments are as | |
17421 | in read_die_and_children. */ | |
17422 | ||
17423 | static struct die_info * | |
bf6af496 | 17424 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
17425 | const gdb_byte *info_ptr, |
17426 | const gdb_byte **new_info_ptr, | |
bf6af496 | 17427 | struct die_info *parent) |
639d11d3 DC |
17428 | { |
17429 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 17430 | const gdb_byte *cur_ptr; |
639d11d3 | 17431 | |
c906108c | 17432 | cur_ptr = info_ptr; |
639d11d3 DC |
17433 | first_die = last_sibling = NULL; |
17434 | ||
17435 | while (1) | |
c906108c | 17436 | { |
639d11d3 | 17437 | struct die_info *die |
dee91e82 | 17438 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 17439 | |
1d325ec1 | 17440 | if (die == NULL) |
c906108c | 17441 | { |
639d11d3 DC |
17442 | *new_info_ptr = cur_ptr; |
17443 | return first_die; | |
c906108c | 17444 | } |
1d325ec1 DJ |
17445 | |
17446 | if (!first_die) | |
17447 | first_die = die; | |
c906108c | 17448 | else |
1d325ec1 DJ |
17449 | last_sibling->sibling = die; |
17450 | ||
17451 | last_sibling = die; | |
c906108c | 17452 | } |
c906108c SS |
17453 | } |
17454 | ||
bf6af496 DE |
17455 | /* Read a die, all of its descendents, and all of its siblings; set |
17456 | all of the fields of all of the dies correctly. Arguments are as | |
17457 | in read_die_and_children. | |
17458 | This the main entry point for reading a DIE and all its children. */ | |
17459 | ||
17460 | static struct die_info * | |
17461 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
17462 | const gdb_byte *info_ptr, |
17463 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
17464 | struct die_info *parent) |
17465 | { | |
17466 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
17467 | new_info_ptr, parent); | |
17468 | ||
b4f54984 | 17469 | if (dwarf_die_debug) |
bf6af496 DE |
17470 | { |
17471 | fprintf_unfiltered (gdb_stdlog, | |
17472 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 17473 | reader->die_section->get_name (), |
bf6af496 DE |
17474 | (unsigned) (info_ptr - reader->die_section->buffer), |
17475 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 17476 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
17477 | } |
17478 | ||
17479 | return die; | |
17480 | } | |
17481 | ||
3019eac3 DE |
17482 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
17483 | attributes. | |
17484 | The caller is responsible for filling in the extra attributes | |
17485 | and updating (*DIEP)->num_attrs. | |
17486 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 17487 | except for its child, sibling, and parent fields. */ |
93311388 | 17488 | |
d521ce57 | 17489 | static const gdb_byte * |
3019eac3 | 17490 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 17491 | struct die_info **diep, const gdb_byte *info_ptr, |
3e225074 | 17492 | int num_extra_attrs) |
93311388 | 17493 | { |
b64f50a1 | 17494 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
17495 | struct abbrev_info *abbrev; |
17496 | struct die_info *die; | |
17497 | struct dwarf2_cu *cu = reader->cu; | |
17498 | bfd *abfd = reader->abfd; | |
17499 | ||
9c541725 | 17500 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
17501 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
17502 | info_ptr += bytes_read; | |
17503 | if (!abbrev_number) | |
17504 | { | |
17505 | *diep = NULL; | |
93311388 DE |
17506 | return info_ptr; |
17507 | } | |
17508 | ||
685af9cd | 17509 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 17510 | if (!abbrev) |
348e048f DE |
17511 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
17512 | abbrev_number, | |
17513 | bfd_get_filename (abfd)); | |
17514 | ||
3019eac3 | 17515 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 17516 | die->sect_off = sect_off; |
93311388 DE |
17517 | die->tag = abbrev->tag; |
17518 | die->abbrev = abbrev_number; | |
3e225074 | 17519 | die->has_children = abbrev->has_children; |
93311388 | 17520 | |
3019eac3 DE |
17521 | /* Make the result usable. |
17522 | The caller needs to update num_attrs after adding the extra | |
17523 | attributes. */ | |
93311388 DE |
17524 | die->num_attrs = abbrev->num_attrs; |
17525 | ||
18a8505e | 17526 | std::vector<int> indexes_that_need_reprocess; |
93311388 | 17527 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e AT |
17528 | { |
17529 | bool need_reprocess; | |
17530 | info_ptr = | |
17531 | read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], | |
17532 | info_ptr, &need_reprocess); | |
17533 | if (need_reprocess) | |
17534 | indexes_that_need_reprocess.push_back (i); | |
17535 | } | |
17536 | ||
052c8bb8 | 17537 | struct attribute *attr = die->attr (DW_AT_str_offsets_base); |
18a8505e AT |
17538 | if (attr != nullptr) |
17539 | cu->str_offsets_base = DW_UNSND (attr); | |
93311388 | 17540 | |
a39fdb41 | 17541 | auto maybe_addr_base = die->addr_base (); |
18a8505e AT |
17542 | if (maybe_addr_base.has_value ()) |
17543 | cu->addr_base = *maybe_addr_base; | |
17544 | for (int index : indexes_that_need_reprocess) | |
17545 | read_attribute_reprocess (reader, &die->attrs[index]); | |
93311388 | 17546 | *diep = die; |
93311388 DE |
17547 | return info_ptr; |
17548 | } | |
17549 | ||
3019eac3 DE |
17550 | /* Read a die and all its attributes. |
17551 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 17552 | except for its child, sibling, and parent fields. */ |
3019eac3 | 17553 | |
d521ce57 | 17554 | static const gdb_byte * |
3019eac3 | 17555 | read_full_die (const struct die_reader_specs *reader, |
3e225074 | 17556 | struct die_info **diep, const gdb_byte *info_ptr) |
3019eac3 | 17557 | { |
d521ce57 | 17558 | const gdb_byte *result; |
bf6af496 | 17559 | |
3e225074 | 17560 | result = read_full_die_1 (reader, diep, info_ptr, 0); |
bf6af496 | 17561 | |
b4f54984 | 17562 | if (dwarf_die_debug) |
bf6af496 DE |
17563 | { |
17564 | fprintf_unfiltered (gdb_stdlog, | |
17565 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 17566 | reader->die_section->get_name (), |
bf6af496 DE |
17567 | (unsigned) (info_ptr - reader->die_section->buffer), |
17568 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 17569 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
17570 | } |
17571 | ||
17572 | return result; | |
3019eac3 | 17573 | } |
433df2d4 | 17574 | \f |
c906108c | 17575 | |
72bf9492 DJ |
17576 | /* Returns nonzero if TAG represents a type that we might generate a partial |
17577 | symbol for. */ | |
17578 | ||
17579 | static int | |
17580 | is_type_tag_for_partial (int tag) | |
17581 | { | |
17582 | switch (tag) | |
17583 | { | |
17584 | #if 0 | |
17585 | /* Some types that would be reasonable to generate partial symbols for, | |
17586 | that we don't at present. */ | |
17587 | case DW_TAG_array_type: | |
17588 | case DW_TAG_file_type: | |
17589 | case DW_TAG_ptr_to_member_type: | |
17590 | case DW_TAG_set_type: | |
17591 | case DW_TAG_string_type: | |
17592 | case DW_TAG_subroutine_type: | |
17593 | #endif | |
17594 | case DW_TAG_base_type: | |
17595 | case DW_TAG_class_type: | |
680b30c7 | 17596 | case DW_TAG_interface_type: |
72bf9492 DJ |
17597 | case DW_TAG_enumeration_type: |
17598 | case DW_TAG_structure_type: | |
17599 | case DW_TAG_subrange_type: | |
17600 | case DW_TAG_typedef: | |
17601 | case DW_TAG_union_type: | |
17602 | return 1; | |
17603 | default: | |
17604 | return 0; | |
17605 | } | |
17606 | } | |
17607 | ||
17608 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
17609 | ||
17610 | static struct partial_die_info * | |
dee91e82 | 17611 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 17612 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 17613 | { |
dee91e82 | 17614 | struct dwarf2_cu *cu = reader->cu; |
518817b3 | 17615 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
72bf9492 | 17616 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 17617 | unsigned int bytes_read; |
5afb4e99 | 17618 | unsigned int load_all = 0; |
72bf9492 DJ |
17619 | int nesting_level = 1; |
17620 | ||
17621 | parent_die = NULL; | |
17622 | last_die = NULL; | |
17623 | ||
7adf1e79 DE |
17624 | gdb_assert (cu->per_cu != NULL); |
17625 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
17626 | load_all = 1; |
17627 | ||
72bf9492 DJ |
17628 | cu->partial_dies |
17629 | = htab_create_alloc_ex (cu->header.length / 12, | |
17630 | partial_die_hash, | |
17631 | partial_die_eq, | |
17632 | NULL, | |
17633 | &cu->comp_unit_obstack, | |
17634 | hashtab_obstack_allocate, | |
17635 | dummy_obstack_deallocate); | |
17636 | ||
72bf9492 DJ |
17637 | while (1) |
17638 | { | |
685af9cd | 17639 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
17640 | |
17641 | /* A NULL abbrev means the end of a series of children. */ | |
17642 | if (abbrev == NULL) | |
17643 | { | |
17644 | if (--nesting_level == 0) | |
cd9983dd YQ |
17645 | return first_die; |
17646 | ||
72bf9492 DJ |
17647 | info_ptr += bytes_read; |
17648 | last_die = parent_die; | |
17649 | parent_die = parent_die->die_parent; | |
17650 | continue; | |
17651 | } | |
17652 | ||
98bfdba5 PA |
17653 | /* Check for template arguments. We never save these; if |
17654 | they're seen, we just mark the parent, and go on our way. */ | |
17655 | if (parent_die != NULL | |
17656 | && cu->language == language_cplus | |
17657 | && (abbrev->tag == DW_TAG_template_type_param | |
17658 | || abbrev->tag == DW_TAG_template_value_param)) | |
17659 | { | |
17660 | parent_die->has_template_arguments = 1; | |
17661 | ||
17662 | if (!load_all) | |
17663 | { | |
17664 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 17665 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
17666 | continue; |
17667 | } | |
17668 | } | |
17669 | ||
0d99eb77 | 17670 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
17671 | Skip their other children. */ |
17672 | if (!load_all | |
17673 | && cu->language == language_cplus | |
17674 | && parent_die != NULL | |
17675 | && parent_die->tag == DW_TAG_subprogram) | |
17676 | { | |
dee91e82 | 17677 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
17678 | continue; |
17679 | } | |
17680 | ||
5afb4e99 DJ |
17681 | /* Check whether this DIE is interesting enough to save. Normally |
17682 | we would not be interested in members here, but there may be | |
17683 | later variables referencing them via DW_AT_specification (for | |
17684 | static members). */ | |
17685 | if (!load_all | |
17686 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 17687 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
17688 | && abbrev->tag != DW_TAG_enumerator |
17689 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 17690 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 17691 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 17692 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 17693 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 17694 | && abbrev->tag != DW_TAG_module |
95554aad | 17695 | && abbrev->tag != DW_TAG_member |
74921315 KS |
17696 | && abbrev->tag != DW_TAG_imported_unit |
17697 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
17698 | { |
17699 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 17700 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
17701 | continue; |
17702 | } | |
17703 | ||
6f06d47b YQ |
17704 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
17705 | abbrev); | |
cd9983dd | 17706 | |
48fbe735 | 17707 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
17708 | |
17709 | /* This two-pass algorithm for processing partial symbols has a | |
17710 | high cost in cache pressure. Thus, handle some simple cases | |
17711 | here which cover the majority of C partial symbols. DIEs | |
17712 | which neither have specification tags in them, nor could have | |
17713 | specification tags elsewhere pointing at them, can simply be | |
17714 | processed and discarded. | |
17715 | ||
17716 | This segment is also optional; scan_partial_symbols and | |
17717 | add_partial_symbol will handle these DIEs if we chain | |
17718 | them in normally. When compilers which do not emit large | |
17719 | quantities of duplicate debug information are more common, | |
17720 | this code can probably be removed. */ | |
17721 | ||
17722 | /* Any complete simple types at the top level (pretty much all | |
17723 | of them, for a language without namespaces), can be processed | |
17724 | directly. */ | |
17725 | if (parent_die == NULL | |
cd9983dd YQ |
17726 | && pdi.has_specification == 0 |
17727 | && pdi.is_declaration == 0 | |
17728 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
17729 | || pdi.tag == DW_TAG_base_type | |
17730 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 17731 | { |
cd9983dd | 17732 | if (building_psymtab && pdi.name != NULL) |
31edb802 | 17733 | add_psymbol_to_list (pdi.name, false, |
79748972 | 17734 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 17735 | psymbol_placement::STATIC, |
1762568f | 17736 | 0, cu->language, objfile); |
cd9983dd | 17737 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
17738 | continue; |
17739 | } | |
17740 | ||
d8228535 JK |
17741 | /* The exception for DW_TAG_typedef with has_children above is |
17742 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 17743 | type_name_or_error will error on such types later. |
d8228535 JK |
17744 | |
17745 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
17746 | it could not find the child DIEs referenced later, this is checked | |
17747 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
17748 | ||
cd9983dd | 17749 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 17750 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 17751 | "- DIE at %s [in module %s]"), |
cd9983dd | 17752 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 17753 | |
72bf9492 DJ |
17754 | /* If we're at the second level, and we're an enumerator, and |
17755 | our parent has no specification (meaning possibly lives in a | |
17756 | namespace elsewhere), then we can add the partial symbol now | |
17757 | instead of queueing it. */ | |
cd9983dd | 17758 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
17759 | && parent_die != NULL |
17760 | && parent_die->die_parent == NULL | |
17761 | && parent_die->tag == DW_TAG_enumeration_type | |
17762 | && parent_die->has_specification == 0) | |
17763 | { | |
cd9983dd | 17764 | if (pdi.name == NULL) |
b98664d3 | 17765 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 17766 | else if (building_psymtab) |
31edb802 | 17767 | add_psymbol_to_list (pdi.name, false, |
79748972 | 17768 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 17769 | cu->language == language_cplus |
75aedd27 TT |
17770 | ? psymbol_placement::GLOBAL |
17771 | : psymbol_placement::STATIC, | |
1762568f | 17772 | 0, cu->language, objfile); |
72bf9492 | 17773 | |
cd9983dd | 17774 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
17775 | continue; |
17776 | } | |
17777 | ||
cd9983dd | 17778 | struct partial_die_info *part_die |
6f06d47b | 17779 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 17780 | |
72bf9492 DJ |
17781 | /* We'll save this DIE so link it in. */ |
17782 | part_die->die_parent = parent_die; | |
17783 | part_die->die_sibling = NULL; | |
17784 | part_die->die_child = NULL; | |
17785 | ||
17786 | if (last_die && last_die == parent_die) | |
17787 | last_die->die_child = part_die; | |
17788 | else if (last_die) | |
17789 | last_die->die_sibling = part_die; | |
17790 | ||
17791 | last_die = part_die; | |
17792 | ||
17793 | if (first_die == NULL) | |
17794 | first_die = part_die; | |
17795 | ||
17796 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
17797 | find interesting need to be in the hash table, because we | |
17798 | also have the parent/sibling/child chains; only those that we | |
17799 | might refer to by offset later during partial symbol reading. | |
17800 | ||
17801 | For now this means things that might have be the target of a | |
17802 | DW_AT_specification, DW_AT_abstract_origin, or | |
17803 | DW_AT_extension. DW_AT_extension will refer only to | |
17804 | namespaces; DW_AT_abstract_origin refers to functions (and | |
17805 | many things under the function DIE, but we do not recurse | |
17806 | into function DIEs during partial symbol reading) and | |
17807 | possibly variables as well; DW_AT_specification refers to | |
17808 | declarations. Declarations ought to have the DW_AT_declaration | |
17809 | flag. It happens that GCC forgets to put it in sometimes, but | |
17810 | only for functions, not for types. | |
17811 | ||
17812 | Adding more things than necessary to the hash table is harmless | |
17813 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
17814 | wasted time in find_partial_die, when we reread the compilation |
17815 | unit with load_all_dies set. */ | |
72bf9492 | 17816 | |
5afb4e99 | 17817 | if (load_all |
72929c62 | 17818 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 17819 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
17820 | || abbrev->tag == DW_TAG_variable |
17821 | || abbrev->tag == DW_TAG_namespace | |
17822 | || part_die->is_declaration) | |
17823 | { | |
17824 | void **slot; | |
17825 | ||
17826 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
17827 | to_underlying (part_die->sect_off), |
17828 | INSERT); | |
72bf9492 DJ |
17829 | *slot = part_die; |
17830 | } | |
17831 | ||
72bf9492 | 17832 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 17833 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
17834 | languages we have to, so that we can get at method physnames |
17835 | to infer fully qualified class names, for DW_AT_specification, | |
17836 | and for C++ template arguments. For C++, we also look one level | |
17837 | inside functions to find template arguments (if the name of the | |
17838 | function does not already contain the template arguments). | |
bc30ff58 | 17839 | |
0a4b0913 AB |
17840 | For Ada and Fortran, we need to scan the children of subprograms |
17841 | and lexical blocks as well because these languages allow the | |
17842 | definition of nested entities that could be interesting for the | |
17843 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 17844 | if (last_die->has_children |
5afb4e99 DJ |
17845 | && (load_all |
17846 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 17847 | || last_die->tag == DW_TAG_module |
72bf9492 | 17848 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
17849 | || (cu->language == language_cplus |
17850 | && last_die->tag == DW_TAG_subprogram | |
17851 | && (last_die->name == NULL | |
17852 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
17853 | || (cu->language != language_c |
17854 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 17855 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 17856 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 17857 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
17858 | || ((cu->language == language_ada |
17859 | || cu->language == language_fortran) | |
bc30ff58 JB |
17860 | && (last_die->tag == DW_TAG_subprogram |
17861 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
17862 | { |
17863 | nesting_level++; | |
17864 | parent_die = last_die; | |
17865 | continue; | |
17866 | } | |
17867 | ||
17868 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 17869 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
17870 | |
17871 | /* Back to the top, do it again. */ | |
17872 | } | |
17873 | } | |
17874 | ||
6f06d47b YQ |
17875 | partial_die_info::partial_die_info (sect_offset sect_off_, |
17876 | struct abbrev_info *abbrev) | |
17877 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
17878 | { | |
17879 | } | |
17880 | ||
35cc7ed7 YQ |
17881 | /* Read a minimal amount of information into the minimal die structure. |
17882 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 17883 | |
48fbe735 YQ |
17884 | const gdb_byte * |
17885 | partial_die_info::read (const struct die_reader_specs *reader, | |
17886 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 17887 | { |
dee91e82 | 17888 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
17889 | struct dwarf2_per_objfile *dwarf2_per_objfile |
17890 | = cu->per_cu->dwarf2_per_objfile; | |
fa238c03 | 17891 | unsigned int i; |
c5aa993b | 17892 | int has_low_pc_attr = 0; |
c906108c | 17893 | int has_high_pc_attr = 0; |
91da1414 | 17894 | int high_pc_relative = 0; |
c906108c | 17895 | |
fd0a254f | 17896 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 17897 | { |
e7da7f8f | 17898 | attribute attr; |
18a8505e | 17899 | bool need_reprocess; |
e7da7f8f | 17900 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], |
18a8505e AT |
17901 | info_ptr, &need_reprocess); |
17902 | /* String and address offsets that need to do the reprocessing have | |
17903 | already been read at this point, so there is no need to wait until | |
17904 | the loop terminates to do the reprocessing. */ | |
17905 | if (need_reprocess) | |
e7da7f8f | 17906 | read_attribute_reprocess (reader, &attr); |
c906108c | 17907 | /* Store the data if it is of an attribute we want to keep in a |
c5aa993b | 17908 | partial symbol table. */ |
c906108c SS |
17909 | switch (attr.name) |
17910 | { | |
17911 | case DW_AT_name: | |
48fbe735 | 17912 | switch (tag) |
71c25dea TT |
17913 | { |
17914 | case DW_TAG_compile_unit: | |
95554aad | 17915 | case DW_TAG_partial_unit: |
348e048f | 17916 | case DW_TAG_type_unit: |
71c25dea TT |
17917 | /* Compilation units have a DW_AT_name that is a filename, not |
17918 | a source language identifier. */ | |
17919 | case DW_TAG_enumeration_type: | |
17920 | case DW_TAG_enumerator: | |
17921 | /* These tags always have simple identifiers already; no need | |
17922 | to canonicalize them. */ | |
48fbe735 | 17923 | name = DW_STRING (&attr); |
71c25dea TT |
17924 | break; |
17925 | default: | |
48fbe735 YQ |
17926 | { |
17927 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
17928 | ||
17929 | name | |
be1e3d3e | 17930 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, objfile); |
48fbe735 | 17931 | } |
71c25dea TT |
17932 | break; |
17933 | } | |
c906108c | 17934 | break; |
31ef98ae | 17935 | case DW_AT_linkage_name: |
c906108c | 17936 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
17937 | /* Note that both forms of linkage name might appear. We |
17938 | assume they will be the same, and we only store the last | |
17939 | one we see. */ | |
48fbe735 | 17940 | linkage_name = DW_STRING (&attr); |
c906108c SS |
17941 | break; |
17942 | case DW_AT_low_pc: | |
17943 | has_low_pc_attr = 1; | |
cd6c91b4 | 17944 | lowpc = attr.value_as_address (); |
c906108c SS |
17945 | break; |
17946 | case DW_AT_high_pc: | |
17947 | has_high_pc_attr = 1; | |
cd6c91b4 TT |
17948 | highpc = attr.value_as_address (); |
17949 | if (cu->header.version >= 4 && attr.form_is_constant ()) | |
31aa7e4e | 17950 | high_pc_relative = 1; |
c906108c SS |
17951 | break; |
17952 | case DW_AT_location: | |
0963b4bd | 17953 | /* Support the .debug_loc offsets. */ |
4fc6c0d5 | 17954 | if (attr.form_is_block ()) |
8e19ed76 | 17955 | { |
48fbe735 | 17956 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 17957 | } |
cd6c91b4 | 17958 | else if (attr.form_is_section_offset ()) |
8e19ed76 | 17959 | { |
4d3c2250 | 17960 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
17961 | } |
17962 | else | |
17963 | { | |
4d3c2250 KB |
17964 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
17965 | "partial symbol information"); | |
8e19ed76 | 17966 | } |
c906108c | 17967 | break; |
c906108c | 17968 | case DW_AT_external: |
48fbe735 | 17969 | is_external = DW_UNSND (&attr); |
c906108c SS |
17970 | break; |
17971 | case DW_AT_declaration: | |
48fbe735 | 17972 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
17973 | break; |
17974 | case DW_AT_type: | |
48fbe735 | 17975 | has_type = 1; |
c906108c SS |
17976 | break; |
17977 | case DW_AT_abstract_origin: | |
17978 | case DW_AT_specification: | |
72bf9492 | 17979 | case DW_AT_extension: |
48fbe735 | 17980 | has_specification = 1; |
0826b30a | 17981 | spec_offset = attr.get_ref_die_offset (); |
48fbe735 | 17982 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 | 17983 | || cu->per_cu->is_dwz); |
c906108c SS |
17984 | break; |
17985 | case DW_AT_sibling: | |
17986 | /* Ignore absolute siblings, they might point outside of | |
17987 | the current compile unit. */ | |
17988 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 17989 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 17990 | else |
b9502d3f | 17991 | { |
48fbe735 | 17992 | const gdb_byte *buffer = reader->buffer; |
0826b30a | 17993 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 17994 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
17995 | |
17996 | if (sibling_ptr < info_ptr) | |
b98664d3 | 17997 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 17998 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 17999 | reader->die_section->overflow_complaint (); |
b9502d3f | 18000 | else |
48fbe735 | 18001 | sibling = sibling_ptr; |
b9502d3f | 18002 | } |
c906108c | 18003 | break; |
fa4028e9 | 18004 | case DW_AT_byte_size: |
48fbe735 | 18005 | has_byte_size = 1; |
fa4028e9 | 18006 | break; |
ff908ebf | 18007 | case DW_AT_const_value: |
48fbe735 | 18008 | has_const_value = 1; |
ff908ebf | 18009 | break; |
68511cec CES |
18010 | case DW_AT_calling_convention: |
18011 | /* DWARF doesn't provide a way to identify a program's source-level | |
18012 | entry point. DW_AT_calling_convention attributes are only meant | |
18013 | to describe functions' calling conventions. | |
18014 | ||
18015 | However, because it's a necessary piece of information in | |
0c1b455e TT |
18016 | Fortran, and before DWARF 4 DW_CC_program was the only |
18017 | piece of debugging information whose definition refers to | |
18018 | a 'main program' at all, several compilers marked Fortran | |
18019 | main programs with DW_CC_program --- even when those | |
18020 | functions use the standard calling conventions. | |
18021 | ||
18022 | Although DWARF now specifies a way to provide this | |
18023 | information, we support this practice for backward | |
18024 | compatibility. */ | |
68511cec | 18025 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 18026 | && cu->language == language_fortran) |
48fbe735 | 18027 | main_subprogram = 1; |
68511cec | 18028 | break; |
481860b3 GB |
18029 | case DW_AT_inline: |
18030 | if (DW_UNSND (&attr) == DW_INL_inlined | |
18031 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 18032 | may_be_inlined = 1; |
481860b3 | 18033 | break; |
95554aad TT |
18034 | |
18035 | case DW_AT_import: | |
48fbe735 | 18036 | if (tag == DW_TAG_imported_unit) |
36586728 | 18037 | { |
0826b30a | 18038 | d.sect_off = attr.get_ref_die_offset (); |
48fbe735 | 18039 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 TT |
18040 | || cu->per_cu->is_dwz); |
18041 | } | |
95554aad TT |
18042 | break; |
18043 | ||
0c1b455e | 18044 | case DW_AT_main_subprogram: |
48fbe735 | 18045 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
18046 | break; |
18047 | ||
05caa1d2 TT |
18048 | case DW_AT_ranges: |
18049 | { | |
18050 | /* It would be nice to reuse dwarf2_get_pc_bounds here, | |
18051 | but that requires a full DIE, so instead we just | |
18052 | reimplement it. */ | |
18053 | int need_ranges_base = tag != DW_TAG_compile_unit; | |
18054 | unsigned int ranges_offset = (DW_UNSND (&attr) | |
18055 | + (need_ranges_base | |
18056 | ? cu->ranges_base | |
18057 | : 0)); | |
18058 | ||
18059 | /* Value of the DW_AT_ranges attribute is the offset in the | |
18060 | .debug_ranges section. */ | |
18061 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, | |
18062 | nullptr)) | |
18063 | has_pc_info = 1; | |
18064 | } | |
18065 | break; | |
18066 | ||
c906108c SS |
18067 | default: |
18068 | break; | |
18069 | } | |
18070 | } | |
18071 | ||
10d06d82 TT |
18072 | /* For Ada, if both the name and the linkage name appear, we prefer |
18073 | the latter. This lets "catch exception" work better, regardless | |
18074 | of the order in which the name and linkage name were emitted. | |
18075 | Really, though, this is just a workaround for the fact that gdb | |
18076 | doesn't store both the name and the linkage name. */ | |
18077 | if (cu->language == language_ada && linkage_name != nullptr) | |
18078 | name = linkage_name; | |
18079 | ||
91da1414 | 18080 | if (high_pc_relative) |
48fbe735 | 18081 | highpc += lowpc; |
91da1414 | 18082 | |
9373cf26 JK |
18083 | if (has_low_pc_attr && has_high_pc_attr) |
18084 | { | |
18085 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
18086 | eliminate duplicate copies of functions and vtables and such. | |
18087 | The linker will arbitrarily choose one and discard the others. | |
18088 | The AT_*_pc values for such functions refer to local labels in | |
18089 | these sections. If the section from that file was discarded, the | |
18090 | labels are not in the output, so the relocs get a value of 0. | |
18091 | If this is a discarded function, mark the pc bounds as invalid, | |
18092 | so that GDB will ignore it. */ | |
48fbe735 | 18093 | if (lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) |
9373cf26 | 18094 | { |
48fbe735 | 18095 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18096 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18097 | |
b98664d3 | 18098 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 18099 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18100 | paddress (gdbarch, lowpc), |
18101 | sect_offset_str (sect_off), | |
9d8780f0 | 18102 | objfile_name (objfile)); |
9373cf26 JK |
18103 | } |
18104 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 18105 | else if (lowpc >= highpc) |
9373cf26 | 18106 | { |
48fbe735 | 18107 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18108 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18109 | |
b98664d3 | 18110 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 18111 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18112 | paddress (gdbarch, lowpc), |
18113 | paddress (gdbarch, highpc), | |
18114 | sect_offset_str (sect_off), | |
9c541725 | 18115 | objfile_name (objfile)); |
9373cf26 JK |
18116 | } |
18117 | else | |
48fbe735 | 18118 | has_pc_info = 1; |
9373cf26 | 18119 | } |
85cbf3d3 | 18120 | |
c906108c SS |
18121 | return info_ptr; |
18122 | } | |
18123 | ||
72bf9492 DJ |
18124 | /* Find a cached partial DIE at OFFSET in CU. */ |
18125 | ||
d590ff25 YQ |
18126 | struct partial_die_info * |
18127 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
18128 | { |
18129 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 18130 | struct partial_die_info part_die (sect_off); |
72bf9492 | 18131 | |
9a3c8263 | 18132 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 18133 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 18134 | to_underlying (sect_off))); |
72bf9492 | 18135 | |
72bf9492 DJ |
18136 | return lookup_die; |
18137 | } | |
18138 | ||
348e048f DE |
18139 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
18140 | except in the case of .debug_types DIEs which do not reference | |
18141 | outside their CU (they do however referencing other types via | |
55f1336d | 18142 | DW_FORM_ref_sig8). */ |
72bf9492 | 18143 | |
122cf0f2 | 18144 | static const struct cu_partial_die_info |
9c541725 | 18145 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 18146 | { |
518817b3 SM |
18147 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18148 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18149 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5afb4e99 DJ |
18150 | struct dwarf2_per_cu_data *per_cu = NULL; |
18151 | struct partial_die_info *pd = NULL; | |
72bf9492 | 18152 | |
36586728 | 18153 | if (offset_in_dwz == cu->per_cu->is_dwz |
4057dfde | 18154 | && cu->header.offset_in_cu_p (sect_off)) |
5afb4e99 | 18155 | { |
d590ff25 | 18156 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 18157 | if (pd != NULL) |
fb816e8b | 18158 | return { cu, pd }; |
0d99eb77 DE |
18159 | /* We missed recording what we needed. |
18160 | Load all dies and try again. */ | |
18161 | per_cu = cu->per_cu; | |
5afb4e99 | 18162 | } |
0d99eb77 DE |
18163 | else |
18164 | { | |
18165 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 18166 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 18167 | { |
9d8780f0 SM |
18168 | error (_("Dwarf Error: Type Unit at offset %s contains" |
18169 | " external reference to offset %s [in module %s].\n"), | |
18170 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
18171 | bfd_get_filename (objfile->obfd)); |
18172 | } | |
9c541725 | 18173 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 18174 | dwarf2_per_objfile); |
72bf9492 | 18175 | |
0d99eb77 DE |
18176 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
18177 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 18178 | |
0d99eb77 | 18179 | per_cu->cu->last_used = 0; |
d590ff25 | 18180 | pd = per_cu->cu->find_partial_die (sect_off); |
0d99eb77 | 18181 | } |
5afb4e99 | 18182 | |
dee91e82 DE |
18183 | /* If we didn't find it, and not all dies have been loaded, |
18184 | load them all and try again. */ | |
18185 | ||
5afb4e99 DJ |
18186 | if (pd == NULL && per_cu->load_all_dies == 0) |
18187 | { | |
5afb4e99 | 18188 | per_cu->load_all_dies = 1; |
fd820528 DE |
18189 | |
18190 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
18191 | THIS_CU->cu may already be in use. So we can't just free it and | |
18192 | replace its DIEs with the ones we read in. Instead, we leave those | |
18193 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
18194 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
18195 | set. */ | |
dee91e82 | 18196 | load_partial_comp_unit (per_cu); |
5afb4e99 | 18197 | |
d590ff25 | 18198 | pd = per_cu->cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18199 | } |
18200 | ||
18201 | if (pd == NULL) | |
18202 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 18203 | _("could not find partial DIE %s " |
3e43a32a | 18204 | "in cache [from module %s]\n"), |
9d8780f0 | 18205 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
fb816e8b | 18206 | return { per_cu->cu, pd }; |
72bf9492 DJ |
18207 | } |
18208 | ||
abc72ce4 DE |
18209 | /* See if we can figure out if the class lives in a namespace. We do |
18210 | this by looking for a member function; its demangled name will | |
18211 | contain namespace info, if there is any. */ | |
18212 | ||
18213 | static void | |
18214 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
18215 | struct dwarf2_cu *cu) | |
18216 | { | |
18217 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
18218 | what template types look like, because the demangler | |
18219 | frequently doesn't give the same name as the debug info. We | |
18220 | could fix this by only using the demangled name to get the | |
18221 | prefix (but see comment in read_structure_type). */ | |
18222 | ||
18223 | struct partial_die_info *real_pdi; | |
18224 | struct partial_die_info *child_pdi; | |
18225 | ||
18226 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
18227 | we should not do this. We'll prepend the parent's fully qualified | |
18228 | name when we create the partial symbol. */ | |
18229 | ||
18230 | real_pdi = struct_pdi; | |
18231 | while (real_pdi->has_specification) | |
fb816e8b | 18232 | { |
122cf0f2 AB |
18233 | auto res = find_partial_die (real_pdi->spec_offset, |
18234 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
18235 | real_pdi = res.pdi; |
18236 | cu = res.cu; | |
18237 | } | |
abc72ce4 DE |
18238 | |
18239 | if (real_pdi->die_parent != NULL) | |
18240 | return; | |
18241 | ||
18242 | for (child_pdi = struct_pdi->die_child; | |
18243 | child_pdi != NULL; | |
18244 | child_pdi = child_pdi->die_sibling) | |
18245 | { | |
18246 | if (child_pdi->tag == DW_TAG_subprogram | |
18247 | && child_pdi->linkage_name != NULL) | |
18248 | { | |
43816ebc TT |
18249 | gdb::unique_xmalloc_ptr<char> actual_class_name |
18250 | (language_class_name_from_physname (cu->language_defn, | |
18251 | child_pdi->linkage_name)); | |
abc72ce4 DE |
18252 | if (actual_class_name != NULL) |
18253 | { | |
518817b3 | 18254 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
be1e3d3e | 18255 | struct_pdi->name = objfile->intern (actual_class_name.get ()); |
abc72ce4 DE |
18256 | } |
18257 | break; | |
18258 | } | |
18259 | } | |
18260 | } | |
18261 | ||
25c11aca TV |
18262 | /* Return true if a DIE with TAG may have the DW_AT_const_value |
18263 | attribute. */ | |
18264 | ||
18265 | static bool | |
18266 | can_have_DW_AT_const_value_p (enum dwarf_tag tag) | |
18267 | { | |
18268 | switch (tag) | |
18269 | { | |
18270 | case DW_TAG_constant: | |
18271 | case DW_TAG_enumerator: | |
18272 | case DW_TAG_formal_parameter: | |
18273 | case DW_TAG_template_value_param: | |
18274 | case DW_TAG_variable: | |
18275 | return true; | |
18276 | } | |
18277 | ||
18278 | return false; | |
18279 | } | |
18280 | ||
52356b79 YQ |
18281 | void |
18282 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 18283 | { |
abc72ce4 DE |
18284 | /* Once we've fixed up a die, there's no point in doing so again. |
18285 | This also avoids a memory leak if we were to call | |
18286 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 18287 | if (fixup_called) |
abc72ce4 DE |
18288 | return; |
18289 | ||
72bf9492 DJ |
18290 | /* If we found a reference attribute and the DIE has no name, try |
18291 | to find a name in the referred to DIE. */ | |
18292 | ||
52356b79 | 18293 | if (name == NULL && has_specification) |
72bf9492 DJ |
18294 | { |
18295 | struct partial_die_info *spec_die; | |
72bf9492 | 18296 | |
122cf0f2 | 18297 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
18298 | spec_die = res.pdi; |
18299 | cu = res.cu; | |
72bf9492 | 18300 | |
52356b79 | 18301 | spec_die->fixup (cu); |
72bf9492 DJ |
18302 | |
18303 | if (spec_die->name) | |
18304 | { | |
52356b79 | 18305 | name = spec_die->name; |
72bf9492 DJ |
18306 | |
18307 | /* Copy DW_AT_external attribute if it is set. */ | |
18308 | if (spec_die->is_external) | |
52356b79 | 18309 | is_external = spec_die->is_external; |
72bf9492 DJ |
18310 | } |
18311 | } | |
18312 | ||
25c11aca TV |
18313 | if (!has_const_value && has_specification |
18314 | && can_have_DW_AT_const_value_p (tag)) | |
18315 | { | |
18316 | struct partial_die_info *spec_die; | |
18317 | ||
18318 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); | |
18319 | spec_die = res.pdi; | |
18320 | cu = res.cu; | |
18321 | ||
18322 | spec_die->fixup (cu); | |
18323 | ||
18324 | if (spec_die->has_const_value) | |
18325 | { | |
18326 | /* Copy DW_AT_const_value attribute if it is set. */ | |
18327 | has_const_value = spec_die->has_const_value; | |
18328 | } | |
18329 | } | |
18330 | ||
72bf9492 | 18331 | /* Set default names for some unnamed DIEs. */ |
72bf9492 | 18332 | |
52356b79 YQ |
18333 | if (name == NULL && tag == DW_TAG_namespace) |
18334 | name = CP_ANONYMOUS_NAMESPACE_STR; | |
72bf9492 | 18335 | |
abc72ce4 DE |
18336 | /* If there is no parent die to provide a namespace, and there are |
18337 | children, see if we can determine the namespace from their linkage | |
122d1940 | 18338 | name. */ |
abc72ce4 | 18339 | if (cu->language == language_cplus |
fd5866f6 | 18340 | && !cu->per_cu->dwarf2_per_objfile->types.empty () |
52356b79 YQ |
18341 | && die_parent == NULL |
18342 | && has_children | |
18343 | && (tag == DW_TAG_class_type | |
18344 | || tag == DW_TAG_structure_type | |
18345 | || tag == DW_TAG_union_type)) | |
18346 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 18347 | |
53832f31 TT |
18348 | /* GCC might emit a nameless struct or union that has a linkage |
18349 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
52356b79 YQ |
18350 | if (name == NULL |
18351 | && (tag == DW_TAG_class_type | |
18352 | || tag == DW_TAG_interface_type | |
18353 | || tag == DW_TAG_structure_type | |
18354 | || tag == DW_TAG_union_type) | |
18355 | && linkage_name != NULL) | |
53832f31 | 18356 | { |
43816ebc TT |
18357 | gdb::unique_xmalloc_ptr<char> demangled |
18358 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
18359 | if (demangled != nullptr) | |
53832f31 | 18360 | { |
96408a79 SA |
18361 | const char *base; |
18362 | ||
18363 | /* Strip any leading namespaces/classes, keep only the base name. | |
18364 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
18365 | base = strrchr (demangled.get (), ':'); |
18366 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
18367 | base++; |
18368 | else | |
43816ebc | 18369 | base = demangled.get (); |
96408a79 | 18370 | |
518817b3 | 18371 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
be1e3d3e | 18372 | name = objfile->intern (base); |
53832f31 TT |
18373 | } |
18374 | } | |
18375 | ||
52356b79 | 18376 | fixup_called = 1; |
72bf9492 DJ |
18377 | } |
18378 | ||
18a8505e AT |
18379 | /* Process the attributes that had to be skipped in the first round. These |
18380 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
18381 | They could not have been processed in the first round, because at the time | |
18382 | the values of str_offsets_base or addr_base may not have been known. */ | |
f1749218 TT |
18383 | static void |
18384 | read_attribute_reprocess (const struct die_reader_specs *reader, | |
18385 | struct attribute *attr) | |
18a8505e AT |
18386 | { |
18387 | struct dwarf2_cu *cu = reader->cu; | |
18388 | switch (attr->form) | |
18389 | { | |
18390 | case DW_FORM_addrx: | |
18391 | case DW_FORM_GNU_addr_index: | |
18392 | DW_ADDR (attr) = read_addr_index (cu, DW_UNSND (attr)); | |
18393 | break; | |
18394 | case DW_FORM_strx: | |
18395 | case DW_FORM_strx1: | |
18396 | case DW_FORM_strx2: | |
18397 | case DW_FORM_strx3: | |
18398 | case DW_FORM_strx4: | |
18399 | case DW_FORM_GNU_str_index: | |
18400 | { | |
18401 | unsigned int str_index = DW_UNSND (attr); | |
18402 | if (reader->dwo_file != NULL) | |
18403 | { | |
18404 | DW_STRING (attr) = read_dwo_str_index (reader, str_index); | |
18405 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18406 | } | |
18407 | else | |
18408 | { | |
18409 | DW_STRING (attr) = read_stub_str_index (cu, str_index); | |
18410 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18411 | } | |
18412 | break; | |
18413 | } | |
18414 | default: | |
18415 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
18416 | } | |
18417 | } | |
18418 | ||
a8329558 | 18419 | /* Read an attribute value described by an attribute form. */ |
c906108c | 18420 | |
d521ce57 | 18421 | static const gdb_byte * |
dee91e82 DE |
18422 | read_attribute_value (const struct die_reader_specs *reader, |
18423 | struct attribute *attr, unsigned form, | |
18a8505e AT |
18424 | LONGEST implicit_const, const gdb_byte *info_ptr, |
18425 | bool *need_reprocess) | |
c906108c | 18426 | { |
dee91e82 | 18427 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18428 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18429 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18430 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 18431 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
dee91e82 | 18432 | bfd *abfd = reader->abfd; |
e7c27a73 | 18433 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
18434 | unsigned int bytes_read; |
18435 | struct dwarf_block *blk; | |
18a8505e | 18436 | *need_reprocess = false; |
c906108c | 18437 | |
aead7601 | 18438 | attr->form = (enum dwarf_form) form; |
a8329558 | 18439 | switch (form) |
c906108c | 18440 | { |
c906108c | 18441 | case DW_FORM_ref_addr: |
ae411497 | 18442 | if (cu->header.version == 2) |
c8a7a66f TT |
18443 | DW_UNSND (attr) = cu->header.read_address (abfd, info_ptr, |
18444 | &bytes_read); | |
ae411497 | 18445 | else |
8266302d TT |
18446 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, |
18447 | &bytes_read); | |
ae411497 TT |
18448 | info_ptr += bytes_read; |
18449 | break; | |
36586728 | 18450 | case DW_FORM_GNU_ref_alt: |
8266302d | 18451 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
36586728 TT |
18452 | info_ptr += bytes_read; |
18453 | break; | |
ae411497 | 18454 | case DW_FORM_addr: |
c8a7a66f | 18455 | DW_ADDR (attr) = cu->header.read_address (abfd, info_ptr, &bytes_read); |
3e29f34a | 18456 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 18457 | info_ptr += bytes_read; |
c906108c SS |
18458 | break; |
18459 | case DW_FORM_block2: | |
7b5a2f43 | 18460 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18461 | blk->size = read_2_bytes (abfd, info_ptr); |
18462 | info_ptr += 2; | |
18463 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18464 | info_ptr += blk->size; | |
18465 | DW_BLOCK (attr) = blk; | |
18466 | break; | |
18467 | case DW_FORM_block4: | |
7b5a2f43 | 18468 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18469 | blk->size = read_4_bytes (abfd, info_ptr); |
18470 | info_ptr += 4; | |
18471 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18472 | info_ptr += blk->size; | |
18473 | DW_BLOCK (attr) = blk; | |
18474 | break; | |
18475 | case DW_FORM_data2: | |
18476 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
18477 | info_ptr += 2; | |
18478 | break; | |
18479 | case DW_FORM_data4: | |
18480 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
18481 | info_ptr += 4; | |
18482 | break; | |
18483 | case DW_FORM_data8: | |
18484 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
18485 | info_ptr += 8; | |
18486 | break; | |
0224619f JK |
18487 | case DW_FORM_data16: |
18488 | blk = dwarf_alloc_block (cu); | |
18489 | blk->size = 16; | |
18490 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
18491 | info_ptr += 16; | |
18492 | DW_BLOCK (attr) = blk; | |
18493 | break; | |
2dc7f7b3 | 18494 | case DW_FORM_sec_offset: |
8266302d | 18495 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
2dc7f7b3 TT |
18496 | info_ptr += bytes_read; |
18497 | break; | |
c906108c | 18498 | case DW_FORM_string: |
9b1c24c8 | 18499 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 18500 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
18501 | info_ptr += bytes_read; |
18502 | break; | |
4bdf3d34 | 18503 | case DW_FORM_strp: |
36586728 TT |
18504 | if (!cu->per_cu->is_dwz) |
18505 | { | |
ed2dc618 SM |
18506 | DW_STRING (attr) = read_indirect_string (dwarf2_per_objfile, |
18507 | abfd, info_ptr, cu_header, | |
36586728 TT |
18508 | &bytes_read); |
18509 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18510 | info_ptr += bytes_read; | |
18511 | break; | |
18512 | } | |
18513 | /* FALLTHROUGH */ | |
43988095 JK |
18514 | case DW_FORM_line_strp: |
18515 | if (!cu->per_cu->is_dwz) | |
18516 | { | |
86c0bb4c TT |
18517 | DW_STRING (attr) |
18518 | = dwarf2_per_objfile->read_line_string (info_ptr, cu_header, | |
18519 | &bytes_read); | |
43988095 JK |
18520 | DW_STRING_IS_CANONICAL (attr) = 0; |
18521 | info_ptr += bytes_read; | |
18522 | break; | |
18523 | } | |
18524 | /* FALLTHROUGH */ | |
36586728 TT |
18525 | case DW_FORM_GNU_strp_alt: |
18526 | { | |
ed2dc618 | 18527 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
8266302d TT |
18528 | LONGEST str_offset = cu_header->read_offset (abfd, info_ptr, |
18529 | &bytes_read); | |
36586728 | 18530 | |
0314b390 | 18531 | DW_STRING (attr) = dwz->read_string (objfile, str_offset); |
36586728 TT |
18532 | DW_STRING_IS_CANONICAL (attr) = 0; |
18533 | info_ptr += bytes_read; | |
18534 | } | |
4bdf3d34 | 18535 | break; |
2dc7f7b3 | 18536 | case DW_FORM_exprloc: |
c906108c | 18537 | case DW_FORM_block: |
7b5a2f43 | 18538 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18539 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18540 | info_ptr += bytes_read; | |
18541 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18542 | info_ptr += blk->size; | |
18543 | DW_BLOCK (attr) = blk; | |
18544 | break; | |
18545 | case DW_FORM_block1: | |
7b5a2f43 | 18546 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18547 | blk->size = read_1_byte (abfd, info_ptr); |
18548 | info_ptr += 1; | |
18549 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18550 | info_ptr += blk->size; | |
18551 | DW_BLOCK (attr) = blk; | |
18552 | break; | |
18553 | case DW_FORM_data1: | |
18554 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
18555 | info_ptr += 1; | |
18556 | break; | |
18557 | case DW_FORM_flag: | |
18558 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
18559 | info_ptr += 1; | |
18560 | break; | |
2dc7f7b3 TT |
18561 | case DW_FORM_flag_present: |
18562 | DW_UNSND (attr) = 1; | |
18563 | break; | |
c906108c SS |
18564 | case DW_FORM_sdata: |
18565 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
18566 | info_ptr += bytes_read; | |
18567 | break; | |
18568 | case DW_FORM_udata: | |
18a8505e | 18569 | case DW_FORM_rnglistx: |
c906108c SS |
18570 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18571 | info_ptr += bytes_read; | |
18572 | break; | |
18573 | case DW_FORM_ref1: | |
9c541725 | 18574 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18575 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
18576 | info_ptr += 1; |
18577 | break; | |
18578 | case DW_FORM_ref2: | |
9c541725 | 18579 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18580 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
18581 | info_ptr += 2; |
18582 | break; | |
18583 | case DW_FORM_ref4: | |
9c541725 | 18584 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18585 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
18586 | info_ptr += 4; |
18587 | break; | |
613e1657 | 18588 | case DW_FORM_ref8: |
9c541725 | 18589 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18590 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
18591 | info_ptr += 8; |
18592 | break; | |
55f1336d | 18593 | case DW_FORM_ref_sig8: |
ac9ec31b | 18594 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
18595 | info_ptr += 8; |
18596 | break; | |
c906108c | 18597 | case DW_FORM_ref_udata: |
9c541725 | 18598 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18599 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
18600 | info_ptr += bytes_read; |
18601 | break; | |
c906108c | 18602 | case DW_FORM_indirect: |
a8329558 KW |
18603 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18604 | info_ptr += bytes_read; | |
43988095 JK |
18605 | if (form == DW_FORM_implicit_const) |
18606 | { | |
18607 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
18608 | info_ptr += bytes_read; | |
18609 | } | |
18610 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
18a8505e | 18611 | info_ptr, need_reprocess); |
43988095 JK |
18612 | break; |
18613 | case DW_FORM_implicit_const: | |
18614 | DW_SND (attr) = implicit_const; | |
a8329558 | 18615 | break; |
336d760d | 18616 | case DW_FORM_addrx: |
3019eac3 | 18617 | case DW_FORM_GNU_addr_index: |
18a8505e AT |
18618 | *need_reprocess = true; |
18619 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
3019eac3 DE |
18620 | info_ptr += bytes_read; |
18621 | break; | |
cf532bd1 | 18622 | case DW_FORM_strx: |
15f18d14 AT |
18623 | case DW_FORM_strx1: |
18624 | case DW_FORM_strx2: | |
18625 | case DW_FORM_strx3: | |
18626 | case DW_FORM_strx4: | |
3019eac3 | 18627 | case DW_FORM_GNU_str_index: |
3019eac3 | 18628 | { |
15f18d14 AT |
18629 | ULONGEST str_index; |
18630 | if (form == DW_FORM_strx1) | |
18631 | { | |
18632 | str_index = read_1_byte (abfd, info_ptr); | |
18633 | info_ptr += 1; | |
18634 | } | |
18635 | else if (form == DW_FORM_strx2) | |
18636 | { | |
18637 | str_index = read_2_bytes (abfd, info_ptr); | |
18638 | info_ptr += 2; | |
18639 | } | |
18640 | else if (form == DW_FORM_strx3) | |
18641 | { | |
18642 | str_index = read_3_bytes (abfd, info_ptr); | |
18643 | info_ptr += 3; | |
18644 | } | |
18645 | else if (form == DW_FORM_strx4) | |
18646 | { | |
18647 | str_index = read_4_bytes (abfd, info_ptr); | |
18648 | info_ptr += 4; | |
18649 | } | |
18650 | else | |
18651 | { | |
18652 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
18653 | info_ptr += bytes_read; | |
18654 | } | |
18a8505e AT |
18655 | *need_reprocess = true; |
18656 | DW_UNSND (attr) = str_index; | |
18657 | } | |
3019eac3 | 18658 | break; |
c906108c | 18659 | default: |
8a3fe4f8 | 18660 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
18661 | dwarf_form_name (form), |
18662 | bfd_get_filename (abfd)); | |
c906108c | 18663 | } |
28e94949 | 18664 | |
36586728 | 18665 | /* Super hack. */ |
cd6c91b4 | 18666 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
18667 | attr->form = DW_FORM_GNU_ref_alt; |
18668 | ||
28e94949 JB |
18669 | /* We have seen instances where the compiler tried to emit a byte |
18670 | size attribute of -1 which ended up being encoded as an unsigned | |
18671 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
18672 | an object of this size seems pretty unlikely so we can relatively | |
18673 | safely treat these cases as if the size attribute was invalid and | |
18674 | treat them as zero by default. */ | |
18675 | if (attr->name == DW_AT_byte_size | |
18676 | && form == DW_FORM_data4 | |
18677 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
18678 | { |
18679 | complaint | |
b98664d3 | 18680 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
43bbcdc2 | 18681 | hex_string (DW_UNSND (attr))); |
01c66ae6 JB |
18682 | DW_UNSND (attr) = 0; |
18683 | } | |
28e94949 | 18684 | |
c906108c SS |
18685 | return info_ptr; |
18686 | } | |
18687 | ||
a8329558 KW |
18688 | /* Read an attribute described by an abbreviated attribute. */ |
18689 | ||
d521ce57 | 18690 | static const gdb_byte * |
dee91e82 DE |
18691 | read_attribute (const struct die_reader_specs *reader, |
18692 | struct attribute *attr, struct attr_abbrev *abbrev, | |
18a8505e | 18693 | const gdb_byte *info_ptr, bool *need_reprocess) |
a8329558 KW |
18694 | { |
18695 | attr->name = abbrev->name; | |
43988095 | 18696 | return read_attribute_value (reader, attr, abbrev->form, |
18a8505e AT |
18697 | abbrev->implicit_const, info_ptr, |
18698 | need_reprocess); | |
a8329558 KW |
18699 | } |
18700 | ||
43988095 JK |
18701 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ |
18702 | ||
18703 | static const char * | |
ed2dc618 | 18704 | read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4f44ae6c | 18705 | LONGEST str_offset) |
43988095 | 18706 | { |
4f44ae6c TT |
18707 | return dwarf2_per_objfile->str.read_string (dwarf2_per_objfile->objfile, |
18708 | str_offset, "DW_FORM_strp"); | |
c906108c SS |
18709 | } |
18710 | ||
43988095 JK |
18711 | /* Return pointer to string at .debug_str offset as read from BUF. |
18712 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
18713 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
18714 | ||
d521ce57 | 18715 | static const char * |
ed2dc618 SM |
18716 | read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, |
18717 | const gdb_byte *buf, | |
cf2c3c16 TT |
18718 | const struct comp_unit_head *cu_header, |
18719 | unsigned int *bytes_read_ptr) | |
18720 | { | |
8266302d | 18721 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
cf2c3c16 | 18722 | |
4f44ae6c | 18723 | return read_indirect_string_at_offset (dwarf2_per_objfile, str_offset); |
cf2c3c16 TT |
18724 | } |
18725 | ||
86c0bb4c | 18726 | /* See read.h. */ |
43988095 | 18727 | |
86c0bb4c TT |
18728 | const char * |
18729 | dwarf2_per_objfile::read_line_string (const gdb_byte *buf, | |
43988095 JK |
18730 | const struct comp_unit_head *cu_header, |
18731 | unsigned int *bytes_read_ptr) | |
18732 | { | |
86c0bb4c | 18733 | bfd *abfd = objfile->obfd; |
8266302d | 18734 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
43988095 | 18735 | |
86c0bb4c | 18736 | return line_str.read_string (objfile, str_offset, "DW_FORM_line_strp"); |
43988095 JK |
18737 | } |
18738 | ||
3019eac3 | 18739 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 18740 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
18741 | ADDR_SIZE is the size of addresses from the CU header. */ |
18742 | ||
18743 | static CORE_ADDR | |
ed2dc618 | 18744 | read_addr_index_1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e AT |
18745 | unsigned int addr_index, gdb::optional<ULONGEST> addr_base, |
18746 | int addr_size) | |
3019eac3 DE |
18747 | { |
18748 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18749 | bfd *abfd = objfile->obfd; | |
18750 | const gdb_byte *info_ptr; | |
18a8505e | 18751 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 18752 | |
96b79293 | 18753 | dwarf2_per_objfile->addr.read (objfile); |
3019eac3 DE |
18754 | if (dwarf2_per_objfile->addr.buffer == NULL) |
18755 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 18756 | objfile_name (objfile)); |
18a8505e AT |
18757 | if (addr_base_or_zero + addr_index * addr_size |
18758 | >= dwarf2_per_objfile->addr.size) | |
3019eac3 DE |
18759 | error (_("DW_FORM_addr_index pointing outside of " |
18760 | ".debug_addr section [in module %s]"), | |
4262abfb | 18761 | objfile_name (objfile)); |
3019eac3 | 18762 | info_ptr = (dwarf2_per_objfile->addr.buffer |
18a8505e | 18763 | + addr_base_or_zero + addr_index * addr_size); |
3019eac3 DE |
18764 | if (addr_size == 4) |
18765 | return bfd_get_32 (abfd, info_ptr); | |
18766 | else | |
18767 | return bfd_get_64 (abfd, info_ptr); | |
18768 | } | |
18769 | ||
18770 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
18771 | ||
18772 | static CORE_ADDR | |
18773 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
18774 | { | |
518817b3 SM |
18775 | return read_addr_index_1 (cu->per_cu->dwarf2_per_objfile, addr_index, |
18776 | cu->addr_base, cu->header.addr_size); | |
3019eac3 DE |
18777 | } |
18778 | ||
18779 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
18780 | ||
18781 | static CORE_ADDR | |
d521ce57 | 18782 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
18783 | unsigned int *bytes_read) |
18784 | { | |
518817b3 | 18785 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
3019eac3 DE |
18786 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
18787 | ||
18788 | return read_addr_index (cu, addr_index); | |
18789 | } | |
18790 | ||
450a1bfc | 18791 | /* See read.h. */ |
3019eac3 DE |
18792 | |
18793 | CORE_ADDR | |
450a1bfc | 18794 | dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu, unsigned int addr_index) |
3019eac3 | 18795 | { |
ed2dc618 | 18796 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 18797 | struct dwarf2_cu *cu = per_cu->cu; |
18a8505e | 18798 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
18799 | int addr_size; |
18800 | ||
3019eac3 DE |
18801 | /* We need addr_base and addr_size. |
18802 | If we don't have PER_CU->cu, we have to get it. | |
18803 | Nasty, but the alternative is storing the needed info in PER_CU, | |
18804 | which at this point doesn't seem justified: it's not clear how frequently | |
18805 | it would get used and it would increase the size of every PER_CU. | |
18806 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
18807 | so we're not in uncharted territory here. | |
18808 | Alas we need to be a bit more complicated as addr_base is contained | |
18809 | in the DIE. | |
18810 | ||
18811 | We don't need to read the entire CU(/TU). | |
18812 | We just need the header and top level die. | |
a1b64ce1 | 18813 | |
3019eac3 | 18814 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 18815 | For now we skip this optimization. */ |
3019eac3 DE |
18816 | |
18817 | if (cu != NULL) | |
18818 | { | |
18819 | addr_base = cu->addr_base; | |
18820 | addr_size = cu->header.addr_size; | |
18821 | } | |
18822 | else | |
18823 | { | |
6751ebae | 18824 | cutu_reader reader (per_cu, NULL, 0, false); |
c0ab21c2 TT |
18825 | addr_base = reader.cu->addr_base; |
18826 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
18827 | } |
18828 | ||
ed2dc618 SM |
18829 | return read_addr_index_1 (dwarf2_per_objfile, addr_index, addr_base, |
18830 | addr_size); | |
3019eac3 DE |
18831 | } |
18832 | ||
18a8505e AT |
18833 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
18834 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
18835 | DWO file. */ | |
3019eac3 | 18836 | |
d521ce57 | 18837 | static const char * |
18a8505e AT |
18838 | read_str_index (struct dwarf2_cu *cu, |
18839 | struct dwarf2_section_info *str_section, | |
18840 | struct dwarf2_section_info *str_offsets_section, | |
18841 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 18842 | { |
518817b3 SM |
18843 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18844 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 18845 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
c5164cbc | 18846 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 18847 | bfd *abfd = objfile->obfd; |
d521ce57 | 18848 | const gdb_byte *info_ptr; |
3019eac3 | 18849 | ULONGEST str_offset; |
cf532bd1 | 18850 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 18851 | |
96b79293 TT |
18852 | str_section->read (objfile); |
18853 | str_offsets_section->read (objfile); | |
73869dc2 | 18854 | if (str_section->buffer == NULL) |
18a8505e | 18855 | error (_("%s used without %s section" |
9d8780f0 | 18856 | " in CU at offset %s [in module %s]"), |
96b79293 | 18857 | form_name, str_section->get_name (), |
18a8505e | 18858 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 18859 | if (str_offsets_section->buffer == NULL) |
18a8505e | 18860 | error (_("%s used without %s section" |
9d8780f0 | 18861 | " in CU at offset %s [in module %s]"), |
96b79293 | 18862 | form_name, str_section->get_name (), |
18a8505e | 18863 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 18864 | info_ptr = (str_offsets_section->buffer |
18a8505e | 18865 | + str_offsets_base |
3019eac3 DE |
18866 | + str_index * cu->header.offset_size); |
18867 | if (cu->header.offset_size == 4) | |
18868 | str_offset = bfd_get_32 (abfd, info_ptr); | |
18869 | else | |
18870 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 18871 | if (str_offset >= str_section->size) |
57d63ce2 | 18872 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
18873 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
18874 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 18875 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
18876 | } |
18877 | ||
18a8505e AT |
18878 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
18879 | ||
18880 | static const char * | |
18881 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
18882 | { | |
18883 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
18884 | ? reader->cu->header.addr_size : 0; | |
18885 | return read_str_index (reader->cu, | |
18886 | &reader->dwo_file->sections.str, | |
18887 | &reader->dwo_file->sections.str_offsets, | |
18888 | str_offsets_base, str_index); | |
18889 | } | |
18890 | ||
18891 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
18892 | ||
18893 | static const char * | |
18894 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
18895 | { | |
18896 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; | |
18897 | const char *objf_name = objfile_name (objfile); | |
18898 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
18899 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
18900 | ||
18901 | if (!cu->str_offsets_base.has_value ()) | |
18902 | error (_("%s used in Fission stub without %s" | |
18903 | " in CU at offset 0x%lx [in module %s]"), | |
18904 | form_name, str_offsets_attr_name, | |
18905 | (long) cu->header.offset_size, objf_name); | |
18906 | ||
18907 | return read_str_index (cu, | |
18908 | &cu->per_cu->dwarf2_per_objfile->str, | |
18909 | &cu->per_cu->dwarf2_per_objfile->str_offsets, | |
18910 | *cu->str_offsets_base, str_index); | |
18911 | } | |
18912 | ||
3019eac3 DE |
18913 | /* Return the length of an LEB128 number in BUF. */ |
18914 | ||
18915 | static int | |
18916 | leb128_size (const gdb_byte *buf) | |
18917 | { | |
18918 | const gdb_byte *begin = buf; | |
18919 | gdb_byte byte; | |
18920 | ||
18921 | while (1) | |
18922 | { | |
18923 | byte = *buf++; | |
18924 | if ((byte & 128) == 0) | |
18925 | return buf - begin; | |
18926 | } | |
18927 | } | |
18928 | ||
c906108c | 18929 | static void |
e142c38c | 18930 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
18931 | { |
18932 | switch (lang) | |
18933 | { | |
18934 | case DW_LANG_C89: | |
76bee0cc | 18935 | case DW_LANG_C99: |
0cfd832f | 18936 | case DW_LANG_C11: |
c906108c | 18937 | case DW_LANG_C: |
d1be3247 | 18938 | case DW_LANG_UPC: |
e142c38c | 18939 | cu->language = language_c; |
c906108c | 18940 | break; |
9c37b5ae | 18941 | case DW_LANG_Java: |
c906108c | 18942 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
18943 | case DW_LANG_C_plus_plus_11: |
18944 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 18945 | cu->language = language_cplus; |
c906108c | 18946 | break; |
6aecb9c2 JB |
18947 | case DW_LANG_D: |
18948 | cu->language = language_d; | |
18949 | break; | |
c906108c SS |
18950 | case DW_LANG_Fortran77: |
18951 | case DW_LANG_Fortran90: | |
b21b22e0 | 18952 | case DW_LANG_Fortran95: |
f7de9aab MW |
18953 | case DW_LANG_Fortran03: |
18954 | case DW_LANG_Fortran08: | |
e142c38c | 18955 | cu->language = language_fortran; |
c906108c | 18956 | break; |
a766d390 DE |
18957 | case DW_LANG_Go: |
18958 | cu->language = language_go; | |
18959 | break; | |
c906108c | 18960 | case DW_LANG_Mips_Assembler: |
e142c38c | 18961 | cu->language = language_asm; |
c906108c SS |
18962 | break; |
18963 | case DW_LANG_Ada83: | |
8aaf0b47 | 18964 | case DW_LANG_Ada95: |
bc5f45f8 JB |
18965 | cu->language = language_ada; |
18966 | break; | |
72019c9c GM |
18967 | case DW_LANG_Modula2: |
18968 | cu->language = language_m2; | |
18969 | break; | |
fe8e67fd PM |
18970 | case DW_LANG_Pascal83: |
18971 | cu->language = language_pascal; | |
18972 | break; | |
22566fbd DJ |
18973 | case DW_LANG_ObjC: |
18974 | cu->language = language_objc; | |
18975 | break; | |
c44af4eb TT |
18976 | case DW_LANG_Rust: |
18977 | case DW_LANG_Rust_old: | |
18978 | cu->language = language_rust; | |
18979 | break; | |
c906108c SS |
18980 | case DW_LANG_Cobol74: |
18981 | case DW_LANG_Cobol85: | |
c906108c | 18982 | default: |
e142c38c | 18983 | cu->language = language_minimal; |
c906108c SS |
18984 | break; |
18985 | } | |
e142c38c | 18986 | cu->language_defn = language_def (cu->language); |
c906108c SS |
18987 | } |
18988 | ||
18989 | /* Return the named attribute or NULL if not there. */ | |
18990 | ||
18991 | static struct attribute * | |
e142c38c | 18992 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 18993 | { |
a48e046c | 18994 | for (;;) |
c906108c | 18995 | { |
a48e046c TT |
18996 | unsigned int i; |
18997 | struct attribute *spec = NULL; | |
18998 | ||
18999 | for (i = 0; i < die->num_attrs; ++i) | |
19000 | { | |
19001 | if (die->attrs[i].name == name) | |
19002 | return &die->attrs[i]; | |
19003 | if (die->attrs[i].name == DW_AT_specification | |
19004 | || die->attrs[i].name == DW_AT_abstract_origin) | |
19005 | spec = &die->attrs[i]; | |
19006 | } | |
19007 | ||
19008 | if (!spec) | |
19009 | break; | |
c906108c | 19010 | |
f2f0e013 | 19011 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 19012 | } |
c5aa993b | 19013 | |
c906108c SS |
19014 | return NULL; |
19015 | } | |
19016 | ||
7d45c7c3 KB |
19017 | /* Return the string associated with a string-typed attribute, or NULL if it |
19018 | is either not found or is of an incorrect type. */ | |
19019 | ||
19020 | static const char * | |
19021 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
19022 | { | |
19023 | struct attribute *attr; | |
19024 | const char *str = NULL; | |
19025 | ||
19026 | attr = dwarf2_attr (die, name, cu); | |
19027 | ||
19028 | if (attr != NULL) | |
19029 | { | |
43988095 | 19030 | if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp |
b3340438 | 19031 | || attr->form == DW_FORM_string |
cf532bd1 | 19032 | || attr->form == DW_FORM_strx |
8fe0f950 AT |
19033 | || attr->form == DW_FORM_strx1 |
19034 | || attr->form == DW_FORM_strx2 | |
19035 | || attr->form == DW_FORM_strx3 | |
19036 | || attr->form == DW_FORM_strx4 | |
b3340438 | 19037 | || attr->form == DW_FORM_GNU_str_index |
16eb6b2d | 19038 | || attr->form == DW_FORM_GNU_strp_alt) |
7d45c7c3 KB |
19039 | str = DW_STRING (attr); |
19040 | else | |
b98664d3 | 19041 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
19042 | "DIE at %s in module %s"), |
19043 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
518817b3 | 19044 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
7d45c7c3 KB |
19045 | } |
19046 | ||
19047 | return str; | |
19048 | } | |
19049 | ||
a084a2a6 | 19050 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 19051 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
19052 | static const char * |
19053 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
19054 | { | |
19055 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
19056 | if (dwo_name == nullptr) | |
19057 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
19058 | return dwo_name; | |
19059 | } | |
19060 | ||
05cf31d1 JB |
19061 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
19062 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 19063 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
19064 | |
19065 | static int | |
19066 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
19067 | { | |
19068 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
19069 | ||
19070 | return (attr && DW_UNSND (attr)); | |
19071 | } | |
19072 | ||
3ca72b44 | 19073 | static int |
e142c38c | 19074 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 19075 | { |
05cf31d1 JB |
19076 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
19077 | which value is non-zero. However, we have to be careful with | |
19078 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
19079 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
19080 | end up accidently finding a declaration attribute that belongs | |
19081 | to a different DIE referenced by the specification attribute, | |
19082 | even though the given DIE does not have a declaration attribute. */ | |
19083 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
19084 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
19085 | } |
19086 | ||
63d06c5c | 19087 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 19088 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
19089 | containing the return value on output. If there is no |
19090 | specification, but there is an abstract origin, that is | |
19091 | returned. */ | |
63d06c5c DC |
19092 | |
19093 | static struct die_info * | |
f2f0e013 | 19094 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 19095 | { |
f2f0e013 DJ |
19096 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
19097 | *spec_cu); | |
63d06c5c | 19098 | |
edb3359d DJ |
19099 | if (spec_attr == NULL) |
19100 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
19101 | ||
63d06c5c DC |
19102 | if (spec_attr == NULL) |
19103 | return NULL; | |
19104 | else | |
f2f0e013 | 19105 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 19106 | } |
c906108c | 19107 | |
527f3840 JK |
19108 | /* Stub for free_line_header to match void * callback types. */ |
19109 | ||
19110 | static void | |
19111 | free_line_header_voidp (void *arg) | |
19112 | { | |
9a3c8263 | 19113 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 19114 | |
fff8551c | 19115 | delete lh; |
527f3840 JK |
19116 | } |
19117 | ||
83769d0b | 19118 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
19119 | |
19120 | static struct dwarf2_section_info * | |
19121 | get_debug_line_section (struct dwarf2_cu *cu) | |
19122 | { | |
19123 | struct dwarf2_section_info *section; | |
518817b3 SM |
19124 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19125 | = cu->per_cu->dwarf2_per_objfile; | |
36586728 TT |
19126 | |
19127 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
19128 | DWO file. */ | |
19129 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
19130 | section = &cu->dwo_unit->dwo_file->sections.line; | |
19131 | else if (cu->per_cu->is_dwz) | |
19132 | { | |
ed2dc618 | 19133 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
19134 | |
19135 | section = &dwz->line; | |
19136 | } | |
19137 | else | |
19138 | section = &dwarf2_per_objfile->line; | |
19139 | ||
19140 | return section; | |
19141 | } | |
19142 | ||
debd256d | 19143 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 19144 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 19145 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
19146 | Returns NULL if there is a problem reading the header, e.g., if it |
19147 | has a version we don't understand. | |
debd256d JB |
19148 | |
19149 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
19150 | the returned object point into the dwarf line section buffer, |
19151 | and must not be freed. */ | |
ae2de4f8 | 19152 | |
fff8551c | 19153 | static line_header_up |
9c541725 | 19154 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 19155 | { |
3019eac3 | 19156 | struct dwarf2_section_info *section; |
518817b3 SM |
19157 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19158 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 19159 | |
36586728 | 19160 | section = get_debug_line_section (cu); |
96b79293 | 19161 | section->read (dwarf2_per_objfile->objfile); |
3019eac3 | 19162 | if (section->buffer == NULL) |
debd256d | 19163 | { |
3019eac3 | 19164 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 19165 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 19166 | else |
b98664d3 | 19167 | complaint (_("missing .debug_line section")); |
debd256d JB |
19168 | return 0; |
19169 | } | |
19170 | ||
0df7ad3a TT |
19171 | return dwarf_decode_line_header (sect_off, cu->per_cu->is_dwz, |
19172 | dwarf2_per_objfile, section, | |
19173 | &cu->header); | |
debd256d | 19174 | } |
c906108c | 19175 | |
c6da4cef | 19176 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 19177 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 19178 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
19179 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
19180 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 19181 | |
d521ce57 | 19182 | static const char * |
7ba99d21 | 19183 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 19184 | const dwarf2_psymtab *pst, |
c89b44cd TT |
19185 | const char *comp_dir, |
19186 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 19187 | { |
d521ce57 TT |
19188 | const char *include_name = fe.name; |
19189 | const char *include_name_to_compare = include_name; | |
72b9f47f | 19190 | const char *pst_filename; |
c6da4cef DE |
19191 | int file_is_pst; |
19192 | ||
8c43009f | 19193 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 19194 | |
c89b44cd | 19195 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
19196 | if (!IS_ABSOLUTE_PATH (include_name) |
19197 | && (dir_name != NULL || comp_dir != NULL)) | |
19198 | { | |
19199 | /* Avoid creating a duplicate psymtab for PST. | |
19200 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
19201 | Before we do the comparison, however, we need to account | |
19202 | for DIR_NAME and COMP_DIR. | |
19203 | First prepend dir_name (if non-NULL). If we still don't | |
19204 | have an absolute path prepend comp_dir (if non-NULL). | |
19205 | However, the directory we record in the include-file's | |
19206 | psymtab does not contain COMP_DIR (to match the | |
19207 | corresponding symtab(s)). | |
19208 | ||
19209 | Example: | |
19210 | ||
19211 | bash$ cd /tmp | |
19212 | bash$ gcc -g ./hello.c | |
19213 | include_name = "hello.c" | |
19214 | dir_name = "." | |
19215 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
19216 | DW_AT_name = "./hello.c" |
19217 | ||
19218 | */ | |
c6da4cef DE |
19219 | |
19220 | if (dir_name != NULL) | |
19221 | { | |
c89b44cd TT |
19222 | name_holder->reset (concat (dir_name, SLASH_STRING, |
19223 | include_name, (char *) NULL)); | |
19224 | include_name = name_holder->get (); | |
c6da4cef | 19225 | include_name_to_compare = include_name; |
c6da4cef DE |
19226 | } |
19227 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
19228 | { | |
c89b44cd TT |
19229 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
19230 | include_name, (char *) NULL)); | |
19231 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
19232 | } |
19233 | } | |
19234 | ||
19235 | pst_filename = pst->filename; | |
c89b44cd | 19236 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
19237 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
19238 | { | |
c89b44cd TT |
19239 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
19240 | pst_filename, (char *) NULL)); | |
19241 | pst_filename = copied_name.get (); | |
c6da4cef DE |
19242 | } |
19243 | ||
1e3fad37 | 19244 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 19245 | |
c6da4cef DE |
19246 | if (file_is_pst) |
19247 | return NULL; | |
19248 | return include_name; | |
19249 | } | |
19250 | ||
d9b3de22 DE |
19251 | /* State machine to track the state of the line number program. */ |
19252 | ||
6f77053d | 19253 | class lnp_state_machine |
d9b3de22 | 19254 | { |
6f77053d PA |
19255 | public: |
19256 | /* Initialize a machine state for the start of a line number | |
19257 | program. */ | |
804d2729 TT |
19258 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
19259 | bool record_lines_p); | |
6f77053d | 19260 | |
8c43009f PA |
19261 | file_entry *current_file () |
19262 | { | |
19263 | /* lh->file_names is 0-based, but the file name numbers in the | |
19264 | statement program are 1-based. */ | |
6f77053d PA |
19265 | return m_line_header->file_name_at (m_file); |
19266 | } | |
19267 | ||
19268 | /* Record the line in the state machine. END_SEQUENCE is true if | |
19269 | we're processing the end of a sequence. */ | |
19270 | void record_line (bool end_sequence); | |
19271 | ||
7ab6656f OJ |
19272 | /* Check ADDRESS is zero and less than UNRELOCATED_LOWPC and if true |
19273 | nop-out rest of the lines in this sequence. */ | |
6f77053d PA |
19274 | void check_line_address (struct dwarf2_cu *cu, |
19275 | const gdb_byte *line_ptr, | |
7ab6656f | 19276 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
19277 | |
19278 | void handle_set_discriminator (unsigned int discriminator) | |
19279 | { | |
19280 | m_discriminator = discriminator; | |
19281 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
19282 | } | |
19283 | ||
19284 | /* Handle DW_LNE_set_address. */ | |
19285 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
19286 | { | |
19287 | m_op_index = 0; | |
19288 | address += baseaddr; | |
19289 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
19290 | } | |
19291 | ||
19292 | /* Handle DW_LNS_advance_pc. */ | |
19293 | void handle_advance_pc (CORE_ADDR adjust); | |
19294 | ||
19295 | /* Handle a special opcode. */ | |
19296 | void handle_special_opcode (unsigned char op_code); | |
19297 | ||
19298 | /* Handle DW_LNS_advance_line. */ | |
19299 | void handle_advance_line (int line_delta) | |
19300 | { | |
19301 | advance_line (line_delta); | |
19302 | } | |
19303 | ||
19304 | /* Handle DW_LNS_set_file. */ | |
19305 | void handle_set_file (file_name_index file); | |
19306 | ||
19307 | /* Handle DW_LNS_negate_stmt. */ | |
19308 | void handle_negate_stmt () | |
19309 | { | |
19310 | m_is_stmt = !m_is_stmt; | |
19311 | } | |
19312 | ||
19313 | /* Handle DW_LNS_const_add_pc. */ | |
19314 | void handle_const_add_pc (); | |
19315 | ||
19316 | /* Handle DW_LNS_fixed_advance_pc. */ | |
19317 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
19318 | { | |
19319 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
19320 | m_op_index = 0; | |
19321 | } | |
19322 | ||
19323 | /* Handle DW_LNS_copy. */ | |
19324 | void handle_copy () | |
19325 | { | |
19326 | record_line (false); | |
19327 | m_discriminator = 0; | |
19328 | } | |
19329 | ||
19330 | /* Handle DW_LNE_end_sequence. */ | |
19331 | void handle_end_sequence () | |
19332 | { | |
804d2729 | 19333 | m_currently_recording_lines = true; |
6f77053d PA |
19334 | } |
19335 | ||
19336 | private: | |
19337 | /* Advance the line by LINE_DELTA. */ | |
19338 | void advance_line (int line_delta) | |
19339 | { | |
19340 | m_line += line_delta; | |
19341 | ||
19342 | if (line_delta != 0) | |
19343 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
19344 | } |
19345 | ||
804d2729 TT |
19346 | struct dwarf2_cu *m_cu; |
19347 | ||
6f77053d PA |
19348 | gdbarch *m_gdbarch; |
19349 | ||
19350 | /* True if we're recording lines. | |
19351 | Otherwise we're building partial symtabs and are just interested in | |
19352 | finding include files mentioned by the line number program. */ | |
19353 | bool m_record_lines_p; | |
19354 | ||
8c43009f | 19355 | /* The line number header. */ |
6f77053d | 19356 | line_header *m_line_header; |
8c43009f | 19357 | |
6f77053d PA |
19358 | /* These are part of the standard DWARF line number state machine, |
19359 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 19360 | |
6f77053d | 19361 | unsigned char m_op_index = 0; |
7ba99d21 AT |
19362 | /* The line table index of the current file. */ |
19363 | file_name_index m_file = 1; | |
6f77053d PA |
19364 | unsigned int m_line = 1; |
19365 | ||
19366 | /* These are initialized in the constructor. */ | |
19367 | ||
19368 | CORE_ADDR m_address; | |
19369 | bool m_is_stmt; | |
19370 | unsigned int m_discriminator; | |
d9b3de22 DE |
19371 | |
19372 | /* Additional bits of state we need to track. */ | |
19373 | ||
19374 | /* The last file that we called dwarf2_start_subfile for. | |
19375 | This is only used for TLLs. */ | |
6f77053d | 19376 | unsigned int m_last_file = 0; |
d9b3de22 | 19377 | /* The last file a line number was recorded for. */ |
6f77053d | 19378 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 19379 | |
804d2729 TT |
19380 | /* When true, record the lines we decode. */ |
19381 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
19382 | |
19383 | /* The last line number that was recorded, used to coalesce | |
19384 | consecutive entries for the same line. This can happen, for | |
19385 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
19386 | unsigned int m_last_line = 0; |
19387 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 19388 | }; |
d9b3de22 | 19389 | |
6f77053d PA |
19390 | void |
19391 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
19392 | { | |
19393 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
19394 | / m_line_header->maximum_ops_per_instruction) | |
19395 | * m_line_header->minimum_instruction_length); | |
19396 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
19397 | m_op_index = ((m_op_index + adjust) | |
19398 | % m_line_header->maximum_ops_per_instruction); | |
19399 | } | |
d9b3de22 | 19400 | |
6f77053d PA |
19401 | void |
19402 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 19403 | { |
6f77053d | 19404 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
258bf0ee RB |
19405 | unsigned char adj_opcode_d = adj_opcode / m_line_header->line_range; |
19406 | unsigned char adj_opcode_r = adj_opcode % m_line_header->line_range; | |
19407 | CORE_ADDR addr_adj = (((m_op_index + adj_opcode_d) | |
6f77053d PA |
19408 | / m_line_header->maximum_ops_per_instruction) |
19409 | * m_line_header->minimum_instruction_length); | |
19410 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
258bf0ee | 19411 | m_op_index = ((m_op_index + adj_opcode_d) |
6f77053d | 19412 | % m_line_header->maximum_ops_per_instruction); |
d9b3de22 | 19413 | |
258bf0ee | 19414 | int line_delta = m_line_header->line_base + adj_opcode_r; |
6f77053d PA |
19415 | advance_line (line_delta); |
19416 | record_line (false); | |
19417 | m_discriminator = 0; | |
19418 | } | |
d9b3de22 | 19419 | |
6f77053d PA |
19420 | void |
19421 | lnp_state_machine::handle_set_file (file_name_index file) | |
19422 | { | |
19423 | m_file = file; | |
19424 | ||
19425 | const file_entry *fe = current_file (); | |
19426 | if (fe == NULL) | |
19427 | dwarf2_debug_line_missing_file_complaint (); | |
19428 | else if (m_record_lines_p) | |
19429 | { | |
19430 | const char *dir = fe->include_dir (m_line_header); | |
19431 | ||
c24bdb02 | 19432 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 19433 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 19434 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
19435 | } |
19436 | } | |
19437 | ||
19438 | void | |
19439 | lnp_state_machine::handle_const_add_pc () | |
19440 | { | |
19441 | CORE_ADDR adjust | |
19442 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
19443 | ||
19444 | CORE_ADDR addr_adj | |
19445 | = (((m_op_index + adjust) | |
19446 | / m_line_header->maximum_ops_per_instruction) | |
19447 | * m_line_header->minimum_instruction_length); | |
19448 | ||
19449 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
19450 | m_op_index = ((m_op_index + adjust) | |
19451 | % m_line_header->maximum_ops_per_instruction); | |
19452 | } | |
d9b3de22 | 19453 | |
a05a36a5 DE |
19454 | /* Return non-zero if we should add LINE to the line number table. |
19455 | LINE is the line to add, LAST_LINE is the last line that was added, | |
19456 | LAST_SUBFILE is the subfile for LAST_LINE. | |
19457 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
19458 | had a non-zero discriminator. | |
19459 | ||
19460 | We have to be careful in the presence of discriminators. | |
19461 | E.g., for this line: | |
19462 | ||
19463 | for (i = 0; i < 100000; i++); | |
19464 | ||
19465 | clang can emit four line number entries for that one line, | |
19466 | each with a different discriminator. | |
19467 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
19468 | ||
19469 | However, we want gdb to coalesce all four entries into one. | |
19470 | Otherwise the user could stepi into the middle of the line and | |
19471 | gdb would get confused about whether the pc really was in the | |
19472 | middle of the line. | |
19473 | ||
19474 | Things are further complicated by the fact that two consecutive | |
19475 | line number entries for the same line is a heuristic used by gcc | |
19476 | to denote the end of the prologue. So we can't just discard duplicate | |
19477 | entries, we have to be selective about it. The heuristic we use is | |
19478 | that we only collapse consecutive entries for the same line if at least | |
19479 | one of those entries has a non-zero discriminator. PR 17276. | |
19480 | ||
19481 | Note: Addresses in the line number state machine can never go backwards | |
19482 | within one sequence, thus this coalescing is ok. */ | |
19483 | ||
19484 | static int | |
804d2729 TT |
19485 | dwarf_record_line_p (struct dwarf2_cu *cu, |
19486 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
19487 | int line_has_non_zero_discriminator, |
19488 | struct subfile *last_subfile) | |
19489 | { | |
c24bdb02 | 19490 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
19491 | return 1; |
19492 | if (line != last_line) | |
19493 | return 1; | |
19494 | /* Same line for the same file that we've seen already. | |
19495 | As a last check, for pr 17276, only record the line if the line | |
19496 | has never had a non-zero discriminator. */ | |
19497 | if (!line_has_non_zero_discriminator) | |
19498 | return 1; | |
19499 | return 0; | |
19500 | } | |
19501 | ||
804d2729 TT |
19502 | /* Use the CU's builder to record line number LINE beginning at |
19503 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
19504 | |
19505 | static void | |
d9b3de22 | 19506 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
8c95582d | 19507 | unsigned int line, CORE_ADDR address, bool is_stmt, |
804d2729 | 19508 | struct dwarf2_cu *cu) |
252a6764 DE |
19509 | { |
19510 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
19511 | ||
27e0867f DE |
19512 | if (dwarf_line_debug) |
19513 | { | |
19514 | fprintf_unfiltered (gdb_stdlog, | |
19515 | "Recording line %u, file %s, address %s\n", | |
19516 | line, lbasename (subfile->name), | |
19517 | paddress (gdbarch, address)); | |
19518 | } | |
19519 | ||
804d2729 | 19520 | if (cu != nullptr) |
8c95582d | 19521 | cu->get_builder ()->record_line (subfile, line, addr, is_stmt); |
252a6764 DE |
19522 | } |
19523 | ||
19524 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
19525 | Mark the end of a set of line number records. | |
d9b3de22 | 19526 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
19527 | If SUBFILE is NULL the request is ignored. */ |
19528 | ||
19529 | static void | |
19530 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 19531 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 19532 | { |
27e0867f DE |
19533 | if (subfile == NULL) |
19534 | return; | |
19535 | ||
19536 | if (dwarf_line_debug) | |
19537 | { | |
19538 | fprintf_unfiltered (gdb_stdlog, | |
19539 | "Finishing current line, file %s, address %s\n", | |
19540 | lbasename (subfile->name), | |
19541 | paddress (gdbarch, address)); | |
19542 | } | |
19543 | ||
8c95582d | 19544 | dwarf_record_line_1 (gdbarch, subfile, 0, address, true, cu); |
d9b3de22 DE |
19545 | } |
19546 | ||
6f77053d PA |
19547 | void |
19548 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 19549 | { |
d9b3de22 DE |
19550 | if (dwarf_line_debug) |
19551 | { | |
19552 | fprintf_unfiltered (gdb_stdlog, | |
19553 | "Processing actual line %u: file %u," | |
94a72be7 | 19554 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 19555 | m_line, m_file, |
6f77053d | 19556 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
19557 | m_is_stmt, m_discriminator, |
19558 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
19559 | } |
19560 | ||
6f77053d | 19561 | file_entry *fe = current_file (); |
8c43009f PA |
19562 | |
19563 | if (fe == NULL) | |
d9b3de22 DE |
19564 | dwarf2_debug_line_missing_file_complaint (); |
19565 | /* For now we ignore lines not starting on an instruction boundary. | |
19566 | But not when processing end_sequence for compatibility with the | |
19567 | previous version of the code. */ | |
6f77053d | 19568 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 19569 | { |
8c43009f | 19570 | fe->included_p = 1; |
8c95582d | 19571 | if (m_record_lines_p) |
d9b3de22 | 19572 | { |
c24bdb02 | 19573 | if (m_last_subfile != m_cu->get_builder ()->get_current_subfile () |
804d2729 | 19574 | || end_sequence) |
d9b3de22 | 19575 | { |
804d2729 TT |
19576 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
19577 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
19578 | } |
19579 | ||
19580 | if (!end_sequence) | |
19581 | { | |
8c95582d AB |
19582 | bool is_stmt = producer_is_codewarrior (m_cu) || m_is_stmt; |
19583 | ||
804d2729 | 19584 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
19585 | m_line_has_non_zero_discriminator, |
19586 | m_last_subfile)) | |
d9b3de22 | 19587 | { |
c24bdb02 | 19588 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 19589 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 19590 | builder->get_current_subfile (), |
8c95582d | 19591 | m_line, m_address, is_stmt, |
804d2729 | 19592 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 19593 | } |
c24bdb02 | 19594 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 19595 | m_last_line = m_line; |
d9b3de22 DE |
19596 | } |
19597 | } | |
19598 | } | |
19599 | } | |
19600 | ||
804d2729 TT |
19601 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
19602 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 19603 | { |
804d2729 | 19604 | m_cu = cu; |
6f77053d PA |
19605 | m_gdbarch = arch; |
19606 | m_record_lines_p = record_lines_p; | |
19607 | m_line_header = lh; | |
d9b3de22 | 19608 | |
804d2729 | 19609 | m_currently_recording_lines = true; |
d9b3de22 | 19610 | |
d9b3de22 DE |
19611 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
19612 | was a line entry for it so that the backend has a chance to adjust it | |
19613 | and also record it in case it needs it. This is currently used by MIPS | |
19614 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
19615 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
19616 | m_is_stmt = lh->default_is_stmt; | |
19617 | m_discriminator = 0; | |
252a6764 DE |
19618 | } |
19619 | ||
6f77053d PA |
19620 | void |
19621 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
19622 | const gdb_byte *line_ptr, | |
7ab6656f | 19623 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 19624 | { |
7ab6656f OJ |
19625 | /* If ADDRESS < UNRELOCATED_LOWPC then it's not a usable value, it's outside |
19626 | the pc range of the CU. However, we restrict the test to only ADDRESS | |
19627 | values of zero to preserve GDB's previous behaviour which is to handle | |
19628 | the specific case of a function being GC'd by the linker. */ | |
924c2928 | 19629 | |
7ab6656f | 19630 | if (address == 0 && address < unrelocated_lowpc) |
924c2928 DE |
19631 | { |
19632 | /* This line table is for a function which has been | |
19633 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
19634 | ||
518817b3 | 19635 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
924c2928 DE |
19636 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
19637 | ||
b98664d3 | 19638 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 19639 | line_offset, objfile_name (objfile)); |
804d2729 TT |
19640 | m_currently_recording_lines = false; |
19641 | /* Note: m_currently_recording_lines is left as false until we see | |
19642 | DW_LNE_end_sequence. */ | |
924c2928 DE |
19643 | } |
19644 | } | |
19645 | ||
f3f5162e | 19646 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
19647 | Process the line number information in LH. |
19648 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
19649 | program in order to set included_p for every referenced header. */ | |
debd256d | 19650 | |
c906108c | 19651 | static void |
43f3e411 DE |
19652 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
19653 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 19654 | { |
d521ce57 TT |
19655 | const gdb_byte *line_ptr, *extended_end; |
19656 | const gdb_byte *line_end; | |
a8c50c1f | 19657 | unsigned int bytes_read, extended_len; |
699ca60a | 19658 | unsigned char op_code, extended_op; |
e142c38c | 19659 | CORE_ADDR baseaddr; |
518817b3 | 19660 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 19661 | bfd *abfd = objfile->obfd; |
fbf65064 | 19662 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
6f77053d PA |
19663 | /* True if we're recording line info (as opposed to building partial |
19664 | symtabs and just interested in finding include files mentioned by | |
19665 | the line number program). */ | |
19666 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 19667 | |
b3b3bada | 19668 | baseaddr = objfile->text_section_offset (); |
c906108c | 19669 | |
debd256d JB |
19670 | line_ptr = lh->statement_program_start; |
19671 | line_end = lh->statement_program_end; | |
c906108c SS |
19672 | |
19673 | /* Read the statement sequences until there's nothing left. */ | |
19674 | while (line_ptr < line_end) | |
19675 | { | |
6f77053d PA |
19676 | /* The DWARF line number program state machine. Reset the state |
19677 | machine at the start of each sequence. */ | |
804d2729 | 19678 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 19679 | bool end_sequence = false; |
d9b3de22 | 19680 | |
8c43009f | 19681 | if (record_lines_p) |
c906108c | 19682 | { |
8c43009f PA |
19683 | /* Start a subfile for the current file of the state |
19684 | machine. */ | |
19685 | const file_entry *fe = state_machine.current_file (); | |
19686 | ||
19687 | if (fe != NULL) | |
804d2729 | 19688 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
19689 | } |
19690 | ||
a738430d | 19691 | /* Decode the table. */ |
d9b3de22 | 19692 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
19693 | { |
19694 | op_code = read_1_byte (abfd, line_ptr); | |
19695 | line_ptr += 1; | |
9aa1fe7e | 19696 | |
debd256d | 19697 | if (op_code >= lh->opcode_base) |
6e70227d | 19698 | { |
8e07a239 | 19699 | /* Special opcode. */ |
6f77053d | 19700 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
19701 | } |
19702 | else switch (op_code) | |
c906108c SS |
19703 | { |
19704 | case DW_LNS_extended_op: | |
3e43a32a MS |
19705 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
19706 | &bytes_read); | |
473b7be6 | 19707 | line_ptr += bytes_read; |
a8c50c1f | 19708 | extended_end = line_ptr + extended_len; |
c906108c SS |
19709 | extended_op = read_1_byte (abfd, line_ptr); |
19710 | line_ptr += 1; | |
19711 | switch (extended_op) | |
19712 | { | |
19713 | case DW_LNE_end_sequence: | |
6f77053d PA |
19714 | state_machine.handle_end_sequence (); |
19715 | end_sequence = true; | |
c906108c SS |
19716 | break; |
19717 | case DW_LNE_set_address: | |
d9b3de22 DE |
19718 | { |
19719 | CORE_ADDR address | |
c8a7a66f | 19720 | = cu->header.read_address (abfd, line_ptr, &bytes_read); |
d9b3de22 | 19721 | line_ptr += bytes_read; |
6f77053d PA |
19722 | |
19723 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 19724 | lowpc - baseaddr, address); |
6f77053d | 19725 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 19726 | } |
c906108c SS |
19727 | break; |
19728 | case DW_LNE_define_file: | |
debd256d | 19729 | { |
d521ce57 | 19730 | const char *cur_file; |
ecfb656c PA |
19731 | unsigned int mod_time, length; |
19732 | dir_index dindex; | |
6e70227d | 19733 | |
3e43a32a MS |
19734 | cur_file = read_direct_string (abfd, line_ptr, |
19735 | &bytes_read); | |
debd256d | 19736 | line_ptr += bytes_read; |
ecfb656c | 19737 | dindex = (dir_index) |
debd256d JB |
19738 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
19739 | line_ptr += bytes_read; | |
19740 | mod_time = | |
19741 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
19742 | line_ptr += bytes_read; | |
19743 | length = | |
19744 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
19745 | line_ptr += bytes_read; | |
ecfb656c | 19746 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 19747 | } |
c906108c | 19748 | break; |
d0c6ba3d | 19749 | case DW_LNE_set_discriminator: |
6f77053d PA |
19750 | { |
19751 | /* The discriminator is not interesting to the | |
19752 | debugger; just ignore it. We still need to | |
19753 | check its value though: | |
19754 | if there are consecutive entries for the same | |
19755 | (non-prologue) line we want to coalesce them. | |
19756 | PR 17276. */ | |
19757 | unsigned int discr | |
19758 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
19759 | line_ptr += bytes_read; | |
19760 | ||
19761 | state_machine.handle_set_discriminator (discr); | |
19762 | } | |
d0c6ba3d | 19763 | break; |
c906108c | 19764 | default: |
b98664d3 | 19765 | complaint (_("mangled .debug_line section")); |
debd256d | 19766 | return; |
c906108c | 19767 | } |
a8c50c1f DJ |
19768 | /* Make sure that we parsed the extended op correctly. If e.g. |
19769 | we expected a different address size than the producer used, | |
19770 | we may have read the wrong number of bytes. */ | |
19771 | if (line_ptr != extended_end) | |
19772 | { | |
b98664d3 | 19773 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
19774 | return; |
19775 | } | |
c906108c SS |
19776 | break; |
19777 | case DW_LNS_copy: | |
6f77053d | 19778 | state_machine.handle_copy (); |
c906108c SS |
19779 | break; |
19780 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
19781 | { |
19782 | CORE_ADDR adjust | |
19783 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 19784 | line_ptr += bytes_read; |
6f77053d PA |
19785 | |
19786 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 19787 | } |
c906108c SS |
19788 | break; |
19789 | case DW_LNS_advance_line: | |
a05a36a5 DE |
19790 | { |
19791 | int line_delta | |
19792 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 19793 | line_ptr += bytes_read; |
6f77053d PA |
19794 | |
19795 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 19796 | } |
c906108c SS |
19797 | break; |
19798 | case DW_LNS_set_file: | |
d9b3de22 | 19799 | { |
6f77053d | 19800 | file_name_index file |
ecfb656c PA |
19801 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
19802 | &bytes_read); | |
d9b3de22 | 19803 | line_ptr += bytes_read; |
8c43009f | 19804 | |
6f77053d | 19805 | state_machine.handle_set_file (file); |
d9b3de22 | 19806 | } |
c906108c SS |
19807 | break; |
19808 | case DW_LNS_set_column: | |
0ad93d4f | 19809 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
19810 | line_ptr += bytes_read; |
19811 | break; | |
19812 | case DW_LNS_negate_stmt: | |
6f77053d | 19813 | state_machine.handle_negate_stmt (); |
c906108c SS |
19814 | break; |
19815 | case DW_LNS_set_basic_block: | |
c906108c | 19816 | break; |
c2c6d25f JM |
19817 | /* Add to the address register of the state machine the |
19818 | address increment value corresponding to special opcode | |
a738430d MK |
19819 | 255. I.e., this value is scaled by the minimum |
19820 | instruction length since special opcode 255 would have | |
b021a221 | 19821 | scaled the increment. */ |
c906108c | 19822 | case DW_LNS_const_add_pc: |
6f77053d | 19823 | state_machine.handle_const_add_pc (); |
c906108c SS |
19824 | break; |
19825 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 19826 | { |
6f77053d | 19827 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 19828 | line_ptr += 2; |
6f77053d PA |
19829 | |
19830 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 19831 | } |
c906108c | 19832 | break; |
9aa1fe7e | 19833 | default: |
a738430d MK |
19834 | { |
19835 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 19836 | int i; |
a738430d | 19837 | |
debd256d | 19838 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
19839 | { |
19840 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
19841 | line_ptr += bytes_read; | |
19842 | } | |
19843 | } | |
c906108c SS |
19844 | } |
19845 | } | |
d9b3de22 DE |
19846 | |
19847 | if (!end_sequence) | |
19848 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
19849 | ||
19850 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
19851 | in which case we still finish recording the last line). */ | |
6f77053d | 19852 | state_machine.record_line (true); |
c906108c | 19853 | } |
f3f5162e DE |
19854 | } |
19855 | ||
19856 | /* Decode the Line Number Program (LNP) for the given line_header | |
19857 | structure and CU. The actual information extracted and the type | |
19858 | of structures created from the LNP depends on the value of PST. | |
19859 | ||
19860 | 1. If PST is NULL, then this procedure uses the data from the program | |
19861 | to create all necessary symbol tables, and their linetables. | |
19862 | ||
19863 | 2. If PST is not NULL, this procedure reads the program to determine | |
19864 | the list of files included by the unit represented by PST, and | |
19865 | builds all the associated partial symbol tables. | |
19866 | ||
19867 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
19868 | It is used for relative paths in the line table. | |
19869 | NOTE: When processing partial symtabs (pst != NULL), | |
19870 | comp_dir == pst->dirname. | |
19871 | ||
19872 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
19873 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
19874 | symtab we don't use it in the name of the psymtabs we create. | |
19875 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
19876 | A good testcase for this is mb-inline.exp. |
19877 | ||
527f3840 JK |
19878 | LOWPC is the lowest address in CU (or 0 if not known). |
19879 | ||
19880 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
19881 | for its PC<->lines mapping information. Otherwise only the filename | |
19882 | table is read in. */ | |
f3f5162e DE |
19883 | |
19884 | static void | |
19885 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 19886 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 19887 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 19888 | { |
518817b3 | 19889 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 19890 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 19891 | |
527f3840 JK |
19892 | if (decode_mapping) |
19893 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
19894 | |
19895 | if (decode_for_pst_p) | |
19896 | { | |
aaa75496 JB |
19897 | /* Now that we're done scanning the Line Header Program, we can |
19898 | create the psymtab of each included file. */ | |
7ba99d21 AT |
19899 | for (auto &file_entry : lh->file_names ()) |
19900 | if (file_entry.included_p == 1) | |
aaa75496 | 19901 | { |
c89b44cd | 19902 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 19903 | const char *include_name = |
7ba99d21 AT |
19904 | psymtab_include_file_name (lh, file_entry, pst, |
19905 | comp_dir, &name_holder); | |
c6da4cef | 19906 | if (include_name != NULL) |
aaa75496 JB |
19907 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
19908 | } | |
19909 | } | |
cb1df416 DJ |
19910 | else |
19911 | { | |
19912 | /* Make sure a symtab is created for every file, even files | |
19913 | which contain only variables (i.e. no code with associated | |
19914 | line numbers). */ | |
c24bdb02 KS |
19915 | buildsym_compunit *builder = cu->get_builder (); |
19916 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 19917 | |
7ba99d21 | 19918 | for (auto &fe : lh->file_names ()) |
cb1df416 | 19919 | { |
804d2729 | 19920 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 19921 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 19922 | { |
c24bdb02 | 19923 | builder->get_current_subfile ()->symtab |
804d2729 | 19924 | = allocate_symtab (cust, |
c24bdb02 | 19925 | builder->get_current_subfile ()->name); |
43f3e411 | 19926 | } |
c24bdb02 | 19927 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
19928 | } |
19929 | } | |
c906108c SS |
19930 | } |
19931 | ||
19932 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
19933 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 19934 | or NULL if not known. |
c906108c SS |
19935 | This routine tries to keep line numbers from identical absolute and |
19936 | relative file names in a common subfile. | |
19937 | ||
19938 | Using the `list' example from the GDB testsuite, which resides in | |
19939 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
19940 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
19941 | ||
c5aa993b | 19942 | DW_AT_name: /srcdir/list0.c |
4d663531 | 19943 | DW_AT_comp_dir: /compdir |
357e46e7 | 19944 | files.files[0].name: list0.h |
c5aa993b | 19945 | files.files[0].dir: /srcdir |
357e46e7 | 19946 | files.files[1].name: list0.c |
c5aa993b | 19947 | files.files[1].dir: /srcdir |
c906108c SS |
19948 | |
19949 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
19950 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
19951 | start_subfile will ensure that this happens provided that we pass the | |
19952 | concatenation of files.files[1].dir and files.files[1].name as the | |
19953 | subfile's name. */ | |
c906108c SS |
19954 | |
19955 | static void | |
804d2729 TT |
19956 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
19957 | const char *dirname) | |
c906108c | 19958 | { |
43816ebc | 19959 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 19960 | |
4d663531 | 19961 | /* In order not to lose the line information directory, |
4f1520fb FR |
19962 | we concatenate it to the filename when it makes sense. |
19963 | Note that the Dwarf3 standard says (speaking of filenames in line | |
19964 | information): ``The directory index is ignored for file names | |
19965 | that represent full path names''. Thus ignoring dirname in the | |
19966 | `else' branch below isn't an issue. */ | |
c906108c | 19967 | |
d5166ae1 | 19968 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 19969 | { |
43816ebc TT |
19970 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
19971 | filename = copy.get (); | |
d521ce57 | 19972 | } |
c906108c | 19973 | |
c24bdb02 | 19974 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
19975 | } |
19976 | ||
804d2729 TT |
19977 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
19978 | buildsym_compunit constructor. */ | |
f4dc4d17 | 19979 | |
c24bdb02 KS |
19980 | struct compunit_symtab * |
19981 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
19982 | CORE_ADDR low_pc) | |
f4dc4d17 | 19983 | { |
c24bdb02 | 19984 | gdb_assert (m_builder == nullptr); |
43f3e411 | 19985 | |
c24bdb02 KS |
19986 | m_builder.reset (new struct buildsym_compunit |
19987 | (per_cu->dwarf2_per_objfile->objfile, | |
19988 | name, comp_dir, language, low_pc)); | |
93b8bea4 | 19989 | |
c24bdb02 | 19990 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 19991 | |
c24bdb02 KS |
19992 | get_builder ()->record_debugformat ("DWARF 2"); |
19993 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 19994 | |
c24bdb02 | 19995 | processing_has_namespace_info = false; |
43f3e411 | 19996 | |
c24bdb02 | 19997 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
19998 | } |
19999 | ||
4c2df51b DJ |
20000 | static void |
20001 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 20002 | struct dwarf2_cu *cu) |
4c2df51b | 20003 | { |
518817b3 | 20004 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e7c27a73 DJ |
20005 | struct comp_unit_head *cu_header = &cu->header; |
20006 | ||
4c2df51b DJ |
20007 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
20008 | code here to turn a symbol with DW_AT_external and a | |
20009 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
20010 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
20011 | with some versions of binutils) where shared libraries could have | |
20012 | relocations against symbols in their debug information - the | |
20013 | minimal symbol would have the right address, but the debug info | |
20014 | would not. It's no longer necessary, because we will explicitly | |
20015 | apply relocations when we read in the debug information now. */ | |
20016 | ||
20017 | /* A DW_AT_location attribute with no contents indicates that a | |
20018 | variable has been optimized away. */ | |
4fc6c0d5 | 20019 | if (attr->form_is_block () && DW_BLOCK (attr)->size == 0) |
4c2df51b | 20020 | { |
f1e6e072 | 20021 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
20022 | return; |
20023 | } | |
20024 | ||
20025 | /* Handle one degenerate form of location expression specially, to | |
20026 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
20027 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
20028 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 20029 | |
4fc6c0d5 | 20030 | if (attr->form_is_block () |
3019eac3 DE |
20031 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
20032 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
336d760d AT |
20033 | || ((DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index |
20034 | || DW_BLOCK (attr)->data[0] == DW_OP_addrx) | |
3019eac3 DE |
20035 | && (DW_BLOCK (attr)->size |
20036 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 20037 | { |
891d2f0b | 20038 | unsigned int dummy; |
4c2df51b | 20039 | |
3019eac3 | 20040 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
c8a7a66f TT |
20041 | SET_SYMBOL_VALUE_ADDRESS |
20042 | (sym, cu->header.read_address (objfile->obfd, | |
20043 | DW_BLOCK (attr)->data + 1, | |
20044 | &dummy)); | |
3019eac3 | 20045 | else |
38583298 TT |
20046 | SET_SYMBOL_VALUE_ADDRESS |
20047 | (sym, read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, | |
20048 | &dummy)); | |
f1e6e072 | 20049 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b | 20050 | fixup_symbol_section (sym, objfile); |
6a053cb1 TT |
20051 | SET_SYMBOL_VALUE_ADDRESS |
20052 | (sym, | |
20053 | SYMBOL_VALUE_ADDRESS (sym) | |
20054 | + objfile->section_offsets[SYMBOL_SECTION (sym)]); | |
4c2df51b DJ |
20055 | return; |
20056 | } | |
20057 | ||
20058 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
20059 | expression evaluator, and use LOC_COMPUTED only when necessary | |
20060 | (i.e. when the value of a register or memory location is | |
20061 | referenced, or a thread-local block, etc.). Then again, it might | |
20062 | not be worthwhile. I'm assuming that it isn't unless performance | |
20063 | or memory numbers show me otherwise. */ | |
20064 | ||
f1e6e072 | 20065 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 20066 | |
f1e6e072 | 20067 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 20068 | cu->has_loclist = true; |
4c2df51b DJ |
20069 | } |
20070 | ||
c906108c SS |
20071 | /* Given a pointer to a DWARF information entry, figure out if we need |
20072 | to make a symbol table entry for it, and if so, create a new entry | |
20073 | and return a pointer to it. | |
20074 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
20075 | used the passed type. |
20076 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
20077 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
20078 | |
20079 | static struct symbol * | |
5e2db402 TT |
20080 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
20081 | struct symbol *space) | |
c906108c | 20082 | { |
518817b3 SM |
20083 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20084 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 20085 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 20086 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 20087 | struct symbol *sym = NULL; |
15d034d0 | 20088 | const char *name; |
c906108c SS |
20089 | struct attribute *attr = NULL; |
20090 | struct attribute *attr2 = NULL; | |
e142c38c | 20091 | CORE_ADDR baseaddr; |
e37fd15a SW |
20092 | struct pending **list_to_add = NULL; |
20093 | ||
edb3359d | 20094 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 20095 | |
b3b3bada | 20096 | baseaddr = objfile->text_section_offset (); |
c906108c | 20097 | |
94af9270 | 20098 | name = dwarf2_name (die, cu); |
c906108c SS |
20099 | if (name) |
20100 | { | |
94af9270 | 20101 | const char *linkagename; |
34eaf542 | 20102 | int suppress_add = 0; |
94af9270 | 20103 | |
34eaf542 TT |
20104 | if (space) |
20105 | sym = space; | |
20106 | else | |
e623cf5d | 20107 | sym = allocate_symbol (objfile); |
c906108c | 20108 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
20109 | |
20110 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 20111 | sym->set_language (cu->language, &objfile->objfile_obstack); |
94af9270 | 20112 | linkagename = dwarf2_physname (name, die, cu); |
4d4eaa30 | 20113 | sym->compute_and_set_names (linkagename, false, objfile->per_bfd); |
c906108c | 20114 | |
f55ee35c JK |
20115 | /* Fortran does not have mangling standard and the mangling does differ |
20116 | between gfortran, iFort etc. */ | |
20117 | if (cu->language == language_fortran | |
468c0cbb CB |
20118 | && symbol_get_demangled_name (sym) == NULL) |
20119 | symbol_set_demangled_name (sym, | |
cfc594ee | 20120 | dwarf2_full_name (name, die, cu), |
29df156d | 20121 | NULL); |
f55ee35c | 20122 | |
c906108c | 20123 | /* Default assumptions. |
c5aa993b | 20124 | Use the passed type or decode it from the die. */ |
176620f1 | 20125 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 20126 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
20127 | if (type != NULL) |
20128 | SYMBOL_TYPE (sym) = type; | |
20129 | else | |
e7c27a73 | 20130 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
20131 | attr = dwarf2_attr (die, |
20132 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
20133 | cu); | |
435d3d88 | 20134 | if (attr != nullptr) |
c906108c SS |
20135 | { |
20136 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
20137 | } | |
cb1df416 | 20138 | |
edb3359d DJ |
20139 | attr = dwarf2_attr (die, |
20140 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
20141 | cu); | |
435d3d88 | 20142 | if (attr != nullptr) |
cb1df416 | 20143 | { |
ecfb656c | 20144 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 20145 | struct file_entry *fe; |
9a619af0 | 20146 | |
ecfb656c PA |
20147 | if (cu->line_header != NULL) |
20148 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
20149 | else |
20150 | fe = NULL; | |
20151 | ||
20152 | if (fe == NULL) | |
b98664d3 | 20153 | complaint (_("file index out of range")); |
8c43009f PA |
20154 | else |
20155 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
20156 | } |
20157 | ||
c906108c SS |
20158 | switch (die->tag) |
20159 | { | |
20160 | case DW_TAG_label: | |
e142c38c | 20161 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 20162 | if (attr != nullptr) |
3e29f34a MR |
20163 | { |
20164 | CORE_ADDR addr; | |
20165 | ||
cd6c91b4 | 20166 | addr = attr->value_as_address (); |
3e29f34a | 20167 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 20168 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
3e29f34a | 20169 | } |
0f5238ed TT |
20170 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
20171 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 20172 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
d3cb6808 | 20173 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
20174 | break; |
20175 | case DW_TAG_subprogram: | |
20176 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
20177 | finish_block. */ | |
f1e6e072 | 20178 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 20179 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d | 20180 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
0a4b0913 AB |
20181 | || cu->language == language_ada |
20182 | || cu->language == language_fortran) | |
c906108c | 20183 | { |
2cfa0c8d | 20184 | /* Subprograms marked external are stored as a global symbol. |
0a4b0913 AB |
20185 | Ada and Fortran subprograms, whether marked external or |
20186 | not, are always stored as a global symbol, because we want | |
20187 | to be able to access them globally. For instance, we want | |
20188 | to be able to break on a nested subprogram without having | |
20189 | to specify the context. */ | |
c24bdb02 | 20190 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
20191 | } |
20192 | else | |
20193 | { | |
e37fd15a | 20194 | list_to_add = cu->list_in_scope; |
c906108c SS |
20195 | } |
20196 | break; | |
edb3359d DJ |
20197 | case DW_TAG_inlined_subroutine: |
20198 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
20199 | finish_block. */ | |
f1e6e072 | 20200 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 20201 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 20202 | list_to_add = cu->list_in_scope; |
edb3359d | 20203 | break; |
34eaf542 TT |
20204 | case DW_TAG_template_value_param: |
20205 | suppress_add = 1; | |
20206 | /* Fall through. */ | |
72929c62 | 20207 | case DW_TAG_constant: |
c906108c | 20208 | case DW_TAG_variable: |
254e6b9e | 20209 | case DW_TAG_member: |
0963b4bd MS |
20210 | /* Compilation with minimal debug info may result in |
20211 | variables with missing type entries. Change the | |
20212 | misleading `void' type to something sensible. */ | |
c906108c | 20213 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
46a4882b | 20214 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 20215 | |
e142c38c | 20216 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
20217 | /* In the case of DW_TAG_member, we should only be called for |
20218 | static const members. */ | |
20219 | if (die->tag == DW_TAG_member) | |
20220 | { | |
3863f96c DE |
20221 | /* dwarf2_add_field uses die_is_declaration, |
20222 | so we do the same. */ | |
254e6b9e DE |
20223 | gdb_assert (die_is_declaration (die, cu)); |
20224 | gdb_assert (attr); | |
20225 | } | |
435d3d88 | 20226 | if (attr != nullptr) |
c906108c | 20227 | { |
e7c27a73 | 20228 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 20229 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 20230 | if (!suppress_add) |
34eaf542 TT |
20231 | { |
20232 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
c24bdb02 | 20233 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 20234 | else |
e37fd15a | 20235 | list_to_add = cu->list_in_scope; |
34eaf542 | 20236 | } |
c906108c SS |
20237 | break; |
20238 | } | |
e142c38c | 20239 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 20240 | if (attr != nullptr) |
c906108c | 20241 | { |
e7c27a73 | 20242 | var_decode_location (attr, sym, cu); |
e142c38c | 20243 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
20244 | |
20245 | /* Fortran explicitly imports any global symbols to the local | |
20246 | scope by DW_TAG_common_block. */ | |
20247 | if (cu->language == language_fortran && die->parent | |
20248 | && die->parent->tag == DW_TAG_common_block) | |
20249 | attr2 = NULL; | |
20250 | ||
caac4577 JG |
20251 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
20252 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
20253 | && !dwarf2_per_objfile->has_section_at_zero) | |
20254 | { | |
20255 | /* When a static variable is eliminated by the linker, | |
20256 | the corresponding debug information is not stripped | |
20257 | out, but the variable address is set to null; | |
20258 | do not add such variables into symbol table. */ | |
20259 | } | |
20260 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 20261 | { |
4b610737 TT |
20262 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
20263 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
20264 | && dwarf2_per_objfile->can_copy) | |
20265 | { | |
20266 | /* A global static variable might be subject to | |
20267 | copy relocation. We first check for a local | |
20268 | minsym, though, because maybe the symbol was | |
20269 | marked hidden, in which case this would not | |
20270 | apply. */ | |
20271 | bound_minimal_symbol found | |
20272 | = (lookup_minimal_symbol_linkage | |
987012b8 | 20273 | (sym->linkage_name (), objfile)); |
4b610737 TT |
20274 | if (found.minsym != nullptr) |
20275 | sym->maybe_copied = 1; | |
20276 | } | |
f55ee35c | 20277 | |
1c809c68 TT |
20278 | /* A variable with DW_AT_external is never static, |
20279 | but it may be block-scoped. */ | |
804d2729 | 20280 | list_to_add |
c24bdb02 KS |
20281 | = ((cu->list_in_scope |
20282 | == cu->get_builder ()->get_file_symbols ()) | |
20283 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 20284 | : cu->list_in_scope); |
1c809c68 | 20285 | } |
c906108c | 20286 | else |
e37fd15a | 20287 | list_to_add = cu->list_in_scope; |
c906108c SS |
20288 | } |
20289 | else | |
20290 | { | |
20291 | /* We do not know the address of this symbol. | |
c5aa993b JM |
20292 | If it is an external symbol and we have type information |
20293 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
20294 | The address of the variable will then be determined from | |
20295 | the minimal symbol table whenever the variable is | |
20296 | referenced. */ | |
e142c38c | 20297 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
20298 | |
20299 | /* Fortran explicitly imports any global symbols to the local | |
20300 | scope by DW_TAG_common_block. */ | |
20301 | if (cu->language == language_fortran && die->parent | |
20302 | && die->parent->tag == DW_TAG_common_block) | |
20303 | { | |
20304 | /* SYMBOL_CLASS doesn't matter here because | |
20305 | read_common_block is going to reset it. */ | |
20306 | if (!suppress_add) | |
20307 | list_to_add = cu->list_in_scope; | |
20308 | } | |
20309 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
20310 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 20311 | { |
0fe7935b DJ |
20312 | /* A variable with DW_AT_external is never static, but it |
20313 | may be block-scoped. */ | |
804d2729 | 20314 | list_to_add |
c24bdb02 KS |
20315 | = ((cu->list_in_scope |
20316 | == cu->get_builder ()->get_file_symbols ()) | |
20317 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 20318 | : cu->list_in_scope); |
0fe7935b | 20319 | |
f1e6e072 | 20320 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 20321 | } |
442ddf59 JK |
20322 | else if (!die_is_declaration (die, cu)) |
20323 | { | |
20324 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
20325 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
20326 | if (!suppress_add) |
20327 | list_to_add = cu->list_in_scope; | |
442ddf59 | 20328 | } |
c906108c SS |
20329 | } |
20330 | break; | |
20331 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
20332 | { |
20333 | /* If we are inside a function, mark this as an argument. If | |
20334 | not, we might be looking at an argument to an inlined function | |
20335 | when we do not have enough information to show inlined frames; | |
20336 | pretend it's a local variable in that case so that the user can | |
20337 | still see it. */ | |
804d2729 | 20338 | struct context_stack *curr |
c24bdb02 | 20339 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
20340 | if (curr != nullptr && curr->name != nullptr) |
20341 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
20342 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 20343 | if (attr != nullptr) |
a60f3166 TT |
20344 | { |
20345 | var_decode_location (attr, sym, cu); | |
20346 | } | |
20347 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 20348 | if (attr != nullptr) |
a60f3166 TT |
20349 | { |
20350 | dwarf2_const_value (attr, sym, cu); | |
20351 | } | |
f346a30d | 20352 | |
a60f3166 TT |
20353 | list_to_add = cu->list_in_scope; |
20354 | } | |
c906108c SS |
20355 | break; |
20356 | case DW_TAG_unspecified_parameters: | |
20357 | /* From varargs functions; gdb doesn't seem to have any | |
20358 | interest in this information, so just ignore it for now. | |
20359 | (FIXME?) */ | |
20360 | break; | |
34eaf542 TT |
20361 | case DW_TAG_template_type_param: |
20362 | suppress_add = 1; | |
20363 | /* Fall through. */ | |
c906108c | 20364 | case DW_TAG_class_type: |
680b30c7 | 20365 | case DW_TAG_interface_type: |
c906108c SS |
20366 | case DW_TAG_structure_type: |
20367 | case DW_TAG_union_type: | |
72019c9c | 20368 | case DW_TAG_set_type: |
c906108c | 20369 | case DW_TAG_enumeration_type: |
f1e6e072 | 20370 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 20371 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 20372 | |
63d06c5c | 20373 | { |
9c37b5ae | 20374 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
20375 | really ever be static objects: otherwise, if you try |
20376 | to, say, break of a class's method and you're in a file | |
20377 | which doesn't mention that class, it won't work unless | |
20378 | the check for all static symbols in lookup_symbol_aux | |
20379 | saves you. See the OtherFileClass tests in | |
20380 | gdb.c++/namespace.exp. */ | |
20381 | ||
e37fd15a | 20382 | if (!suppress_add) |
34eaf542 | 20383 | { |
c24bdb02 | 20384 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 20385 | list_to_add |
c24bdb02 | 20386 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 20387 | && cu->language == language_cplus |
c24bdb02 | 20388 | ? builder->get_global_symbols () |
804d2729 | 20389 | : cu->list_in_scope); |
63d06c5c | 20390 | |
64382290 | 20391 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 20392 | ... }" also defines a typedef for "foo". */ |
64382290 | 20393 | if (cu->language == language_cplus |
45280282 | 20394 | || cu->language == language_ada |
c44af4eb TT |
20395 | || cu->language == language_d |
20396 | || cu->language == language_rust) | |
64382290 TT |
20397 | { |
20398 | /* The symbol's name is already allocated along | |
20399 | with this objfile, so we don't need to | |
20400 | duplicate it for the type. */ | |
20401 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
987012b8 | 20402 | TYPE_NAME (SYMBOL_TYPE (sym)) = sym->search_name (); |
64382290 | 20403 | } |
63d06c5c DC |
20404 | } |
20405 | } | |
c906108c SS |
20406 | break; |
20407 | case DW_TAG_typedef: | |
f1e6e072 | 20408 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 20409 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 20410 | list_to_add = cu->list_in_scope; |
63d06c5c | 20411 | break; |
c906108c | 20412 | case DW_TAG_base_type: |
a02abb62 | 20413 | case DW_TAG_subrange_type: |
f1e6e072 | 20414 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 20415 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 20416 | list_to_add = cu->list_in_scope; |
c906108c SS |
20417 | break; |
20418 | case DW_TAG_enumerator: | |
e142c38c | 20419 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 20420 | if (attr != nullptr) |
c906108c | 20421 | { |
e7c27a73 | 20422 | dwarf2_const_value (attr, sym, cu); |
c906108c | 20423 | } |
63d06c5c DC |
20424 | { |
20425 | /* NOTE: carlton/2003-11-10: See comment above in the | |
20426 | DW_TAG_class_type, etc. block. */ | |
20427 | ||
804d2729 | 20428 | list_to_add |
c24bdb02 | 20429 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 20430 | && cu->language == language_cplus |
c24bdb02 | 20431 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 20432 | : cu->list_in_scope); |
63d06c5c | 20433 | } |
c906108c | 20434 | break; |
74921315 | 20435 | case DW_TAG_imported_declaration: |
5c4e30ca | 20436 | case DW_TAG_namespace: |
f1e6e072 | 20437 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 20438 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 20439 | break; |
530e8392 KB |
20440 | case DW_TAG_module: |
20441 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
20442 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 20443 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 20444 | break; |
4357ac6c | 20445 | case DW_TAG_common_block: |
f1e6e072 | 20446 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 20447 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 20448 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 20449 | break; |
c906108c SS |
20450 | default: |
20451 | /* Not a tag we recognize. Hopefully we aren't processing | |
20452 | trash data, but since we must specifically ignore things | |
20453 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 20454 | this point. */ |
b98664d3 | 20455 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 20456 | dwarf_tag_name (die->tag)); |
c906108c SS |
20457 | break; |
20458 | } | |
df8a16a1 | 20459 | |
e37fd15a SW |
20460 | if (suppress_add) |
20461 | { | |
20462 | sym->hash_next = objfile->template_symbols; | |
20463 | objfile->template_symbols = sym; | |
20464 | list_to_add = NULL; | |
20465 | } | |
20466 | ||
20467 | if (list_to_add != NULL) | |
d3cb6808 | 20468 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 20469 | |
df8a16a1 DJ |
20470 | /* For the benefit of old versions of GCC, check for anonymous |
20471 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 20472 | if (!cu->processing_has_namespace_info |
94af9270 | 20473 | && cu->language == language_cplus) |
c24bdb02 | 20474 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
20475 | } |
20476 | return (sym); | |
20477 | } | |
20478 | ||
98bfdba5 PA |
20479 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
20480 | zero-extend it as appropriate for the symbol's type. The DWARF | |
20481 | standard (v4) is not entirely clear about the meaning of using | |
20482 | DW_FORM_dataN for a constant with a signed type, where the type is | |
20483 | wider than the data. The conclusion of a discussion on the DWARF | |
20484 | list was that this is unspecified. We choose to always zero-extend | |
20485 | because that is the interpretation long in use by GCC. */ | |
c906108c | 20486 | |
98bfdba5 | 20487 | static gdb_byte * |
ff39bb5e | 20488 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 20489 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 20490 | { |
518817b3 | 20491 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e17a4113 UW |
20492 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
20493 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
20494 | LONGEST l = DW_UNSND (attr); |
20495 | ||
20496 | if (bits < sizeof (*value) * 8) | |
20497 | { | |
20498 | l &= ((LONGEST) 1 << bits) - 1; | |
20499 | *value = l; | |
20500 | } | |
20501 | else if (bits == sizeof (*value) * 8) | |
20502 | *value = l; | |
20503 | else | |
20504 | { | |
224c3ddb | 20505 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
20506 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
20507 | return bytes; | |
20508 | } | |
20509 | ||
20510 | return NULL; | |
20511 | } | |
20512 | ||
20513 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
20514 | the value does not fit in *VALUE, set *BYTES - either already | |
20515 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
20516 | or, set *BATON, if we translated the constant to a location | |
20517 | expression. */ | |
20518 | ||
20519 | static void | |
ff39bb5e | 20520 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
20521 | const char *name, struct obstack *obstack, |
20522 | struct dwarf2_cu *cu, | |
d521ce57 | 20523 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
20524 | struct dwarf2_locexpr_baton **baton) |
20525 | { | |
518817b3 | 20526 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
98bfdba5 | 20527 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 20528 | struct dwarf_block *blk; |
98bfdba5 PA |
20529 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
20530 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
20531 | ||
20532 | *value = 0; | |
20533 | *bytes = NULL; | |
20534 | *baton = NULL; | |
c906108c SS |
20535 | |
20536 | switch (attr->form) | |
20537 | { | |
20538 | case DW_FORM_addr: | |
336d760d | 20539 | case DW_FORM_addrx: |
3019eac3 | 20540 | case DW_FORM_GNU_addr_index: |
ac56253d | 20541 | { |
ac56253d TT |
20542 | gdb_byte *data; |
20543 | ||
98bfdba5 PA |
20544 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
20545 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 20546 | cu_header->addr_size, |
98bfdba5 | 20547 | TYPE_LENGTH (type)); |
ac56253d TT |
20548 | /* Symbols of this form are reasonably rare, so we just |
20549 | piggyback on the existing location code rather than writing | |
20550 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 20551 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
98bfdba5 PA |
20552 | (*baton)->per_cu = cu->per_cu; |
20553 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 20554 | |
98bfdba5 | 20555 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 20556 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 20557 | (*baton)->data = data; |
ac56253d TT |
20558 | |
20559 | data[0] = DW_OP_addr; | |
20560 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
20561 | byte_order, DW_ADDR (attr)); | |
20562 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 20563 | } |
c906108c | 20564 | break; |
4ac36638 | 20565 | case DW_FORM_string: |
93b5768b | 20566 | case DW_FORM_strp: |
cf532bd1 | 20567 | case DW_FORM_strx: |
3019eac3 | 20568 | case DW_FORM_GNU_str_index: |
36586728 | 20569 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
20570 | /* DW_STRING is already allocated on the objfile obstack, point |
20571 | directly to it. */ | |
d521ce57 | 20572 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 20573 | break; |
c906108c SS |
20574 | case DW_FORM_block1: |
20575 | case DW_FORM_block2: | |
20576 | case DW_FORM_block4: | |
20577 | case DW_FORM_block: | |
2dc7f7b3 | 20578 | case DW_FORM_exprloc: |
0224619f | 20579 | case DW_FORM_data16: |
c906108c | 20580 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
20581 | if (TYPE_LENGTH (type) != blk->size) |
20582 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
20583 | TYPE_LENGTH (type)); | |
20584 | *bytes = blk->data; | |
c906108c | 20585 | break; |
2df3850c JM |
20586 | |
20587 | /* The DW_AT_const_value attributes are supposed to carry the | |
20588 | symbol's value "represented as it would be on the target | |
20589 | architecture." By the time we get here, it's already been | |
20590 | converted to host endianness, so we just need to sign- or | |
20591 | zero-extend it as appropriate. */ | |
20592 | case DW_FORM_data1: | |
3aef2284 | 20593 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 20594 | break; |
c906108c | 20595 | case DW_FORM_data2: |
3aef2284 | 20596 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 20597 | break; |
c906108c | 20598 | case DW_FORM_data4: |
3aef2284 | 20599 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 20600 | break; |
c906108c | 20601 | case DW_FORM_data8: |
3aef2284 | 20602 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
20603 | break; |
20604 | ||
c906108c | 20605 | case DW_FORM_sdata: |
663c44ac | 20606 | case DW_FORM_implicit_const: |
98bfdba5 | 20607 | *value = DW_SND (attr); |
2df3850c JM |
20608 | break; |
20609 | ||
c906108c | 20610 | case DW_FORM_udata: |
98bfdba5 | 20611 | *value = DW_UNSND (attr); |
c906108c | 20612 | break; |
2df3850c | 20613 | |
c906108c | 20614 | default: |
b98664d3 | 20615 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 20616 | dwarf_form_name (attr->form)); |
98bfdba5 | 20617 | *value = 0; |
c906108c SS |
20618 | break; |
20619 | } | |
20620 | } | |
20621 | ||
2df3850c | 20622 | |
98bfdba5 PA |
20623 | /* Copy constant value from an attribute to a symbol. */ |
20624 | ||
2df3850c | 20625 | static void |
ff39bb5e | 20626 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 20627 | struct dwarf2_cu *cu) |
2df3850c | 20628 | { |
518817b3 | 20629 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
12df843f | 20630 | LONGEST value; |
d521ce57 | 20631 | const gdb_byte *bytes; |
98bfdba5 | 20632 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 20633 | |
98bfdba5 | 20634 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 20635 | sym->print_name (), |
98bfdba5 PA |
20636 | &objfile->objfile_obstack, cu, |
20637 | &value, &bytes, &baton); | |
2df3850c | 20638 | |
98bfdba5 PA |
20639 | if (baton != NULL) |
20640 | { | |
98bfdba5 | 20641 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 20642 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
20643 | } |
20644 | else if (bytes != NULL) | |
20645 | { | |
20646 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 20647 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
20648 | } |
20649 | else | |
20650 | { | |
20651 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 20652 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 20653 | } |
2df3850c JM |
20654 | } |
20655 | ||
c906108c SS |
20656 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
20657 | ||
20658 | static struct type * | |
e7c27a73 | 20659 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 20660 | { |
c906108c | 20661 | struct attribute *type_attr; |
c906108c | 20662 | |
e142c38c | 20663 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
20664 | if (!type_attr) |
20665 | { | |
518817b3 | 20666 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 20667 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 20668 | return objfile_type (objfile)->builtin_void; |
c906108c | 20669 | } |
348e048f | 20670 | |
673bfd45 | 20671 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
20672 | } |
20673 | ||
b4ba55a1 JB |
20674 | /* True iff CU's producer generates GNAT Ada auxiliary information |
20675 | that allows to find parallel types through that information instead | |
20676 | of having to do expensive parallel lookups by type name. */ | |
20677 | ||
20678 | static int | |
20679 | need_gnat_info (struct dwarf2_cu *cu) | |
20680 | { | |
de4cb04a JB |
20681 | /* Assume that the Ada compiler was GNAT, which always produces |
20682 | the auxiliary information. */ | |
20683 | return (cu->language == language_ada); | |
b4ba55a1 JB |
20684 | } |
20685 | ||
b4ba55a1 JB |
20686 | /* Return the auxiliary type of the die in question using its |
20687 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
20688 | attribute is not present. */ | |
20689 | ||
20690 | static struct type * | |
20691 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
20692 | { | |
b4ba55a1 | 20693 | struct attribute *type_attr; |
b4ba55a1 JB |
20694 | |
20695 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
20696 | if (!type_attr) | |
20697 | return NULL; | |
20698 | ||
673bfd45 | 20699 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
20700 | } |
20701 | ||
20702 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
20703 | descriptive type accordingly. */ | |
20704 | ||
20705 | static void | |
20706 | set_descriptive_type (struct type *type, struct die_info *die, | |
20707 | struct dwarf2_cu *cu) | |
20708 | { | |
20709 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
20710 | ||
20711 | if (descriptive_type) | |
20712 | { | |
20713 | ALLOCATE_GNAT_AUX_TYPE (type); | |
20714 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
20715 | } | |
20716 | } | |
20717 | ||
c906108c SS |
20718 | /* Return the containing type of the die in question using its |
20719 | DW_AT_containing_type attribute. */ | |
20720 | ||
20721 | static struct type * | |
e7c27a73 | 20722 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 20723 | { |
c906108c | 20724 | struct attribute *type_attr; |
518817b3 | 20725 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 20726 | |
e142c38c | 20727 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
20728 | if (!type_attr) |
20729 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 20730 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 20731 | |
673bfd45 | 20732 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
20733 | } |
20734 | ||
ac9ec31b DE |
20735 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
20736 | ||
20737 | static struct type * | |
20738 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
20739 | { | |
518817b3 SM |
20740 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20741 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b | 20742 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
528e1572 | 20743 | char *saved; |
ac9ec31b | 20744 | |
528e1572 SM |
20745 | std::string message |
20746 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
20747 | objfile_name (objfile), | |
20748 | sect_offset_str (cu->header.sect_off), | |
20749 | sect_offset_str (die->sect_off)); | |
efba19b0 | 20750 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 20751 | |
19f392bc | 20752 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
20753 | } |
20754 | ||
673bfd45 | 20755 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
20756 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
20757 | DW_AT_containing_type. | |
673bfd45 DE |
20758 | If there is no type substitute an error marker. */ |
20759 | ||
c906108c | 20760 | static struct type * |
ff39bb5e | 20761 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 20762 | struct dwarf2_cu *cu) |
c906108c | 20763 | { |
518817b3 SM |
20764 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20765 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 20766 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
f792889a DJ |
20767 | struct type *this_type; |
20768 | ||
ac9ec31b DE |
20769 | gdb_assert (attr->name == DW_AT_type |
20770 | || attr->name == DW_AT_GNAT_descriptive_type | |
20771 | || attr->name == DW_AT_containing_type); | |
20772 | ||
673bfd45 DE |
20773 | /* First see if we have it cached. */ |
20774 | ||
36586728 TT |
20775 | if (attr->form == DW_FORM_GNU_ref_alt) |
20776 | { | |
20777 | struct dwarf2_per_cu_data *per_cu; | |
0826b30a | 20778 | sect_offset sect_off = attr->get_ref_die_offset (); |
36586728 | 20779 | |
ed2dc618 SM |
20780 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, |
20781 | dwarf2_per_objfile); | |
9c541725 | 20782 | this_type = get_die_type_at_offset (sect_off, per_cu); |
36586728 | 20783 | } |
cd6c91b4 | 20784 | else if (attr->form_is_ref ()) |
673bfd45 | 20785 | { |
0826b30a | 20786 | sect_offset sect_off = attr->get_ref_die_offset (); |
673bfd45 | 20787 | |
9c541725 | 20788 | this_type = get_die_type_at_offset (sect_off, cu->per_cu); |
673bfd45 | 20789 | } |
55f1336d | 20790 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 20791 | { |
ac9ec31b | 20792 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 20793 | |
ac9ec31b | 20794 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
20795 | } |
20796 | else | |
20797 | { | |
b98664d3 | 20798 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
20799 | " at %s [in module %s]"), |
20800 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 20801 | objfile_name (objfile)); |
ac9ec31b | 20802 | return build_error_marker_type (cu, die); |
673bfd45 DE |
20803 | } |
20804 | ||
20805 | /* If not cached we need to read it in. */ | |
20806 | ||
20807 | if (this_type == NULL) | |
20808 | { | |
ac9ec31b | 20809 | struct die_info *type_die = NULL; |
673bfd45 DE |
20810 | struct dwarf2_cu *type_cu = cu; |
20811 | ||
cd6c91b4 | 20812 | if (attr->form_is_ref ()) |
ac9ec31b DE |
20813 | type_die = follow_die_ref (die, attr, &type_cu); |
20814 | if (type_die == NULL) | |
20815 | return build_error_marker_type (cu, die); | |
20816 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
20817 | from an inter-CU reference and the type's CU got expanded before |
20818 | ours. */ | |
ac9ec31b | 20819 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
20820 | } |
20821 | ||
20822 | /* If we still don't have a type use an error marker. */ | |
20823 | ||
20824 | if (this_type == NULL) | |
ac9ec31b | 20825 | return build_error_marker_type (cu, die); |
673bfd45 | 20826 | |
f792889a | 20827 | return this_type; |
c906108c SS |
20828 | } |
20829 | ||
673bfd45 DE |
20830 | /* Return the type in DIE, CU. |
20831 | Returns NULL for invalid types. | |
20832 | ||
02142a6c | 20833 | This first does a lookup in die_type_hash, |
673bfd45 DE |
20834 | and only reads the die in if necessary. |
20835 | ||
20836 | NOTE: This can be called when reading in partial or full symbols. */ | |
20837 | ||
f792889a | 20838 | static struct type * |
e7c27a73 | 20839 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 20840 | { |
f792889a DJ |
20841 | struct type *this_type; |
20842 | ||
20843 | this_type = get_die_type (die, cu); | |
20844 | if (this_type) | |
20845 | return this_type; | |
20846 | ||
673bfd45 DE |
20847 | return read_type_die_1 (die, cu); |
20848 | } | |
20849 | ||
20850 | /* Read the type in DIE, CU. | |
20851 | Returns NULL for invalid types. */ | |
20852 | ||
20853 | static struct type * | |
20854 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
20855 | { | |
20856 | struct type *this_type = NULL; | |
20857 | ||
c906108c SS |
20858 | switch (die->tag) |
20859 | { | |
20860 | case DW_TAG_class_type: | |
680b30c7 | 20861 | case DW_TAG_interface_type: |
c906108c SS |
20862 | case DW_TAG_structure_type: |
20863 | case DW_TAG_union_type: | |
f792889a | 20864 | this_type = read_structure_type (die, cu); |
c906108c SS |
20865 | break; |
20866 | case DW_TAG_enumeration_type: | |
f792889a | 20867 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
20868 | break; |
20869 | case DW_TAG_subprogram: | |
20870 | case DW_TAG_subroutine_type: | |
edb3359d | 20871 | case DW_TAG_inlined_subroutine: |
f792889a | 20872 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
20873 | break; |
20874 | case DW_TAG_array_type: | |
f792889a | 20875 | this_type = read_array_type (die, cu); |
c906108c | 20876 | break; |
72019c9c | 20877 | case DW_TAG_set_type: |
f792889a | 20878 | this_type = read_set_type (die, cu); |
72019c9c | 20879 | break; |
c906108c | 20880 | case DW_TAG_pointer_type: |
f792889a | 20881 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
20882 | break; |
20883 | case DW_TAG_ptr_to_member_type: | |
f792889a | 20884 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
20885 | break; |
20886 | case DW_TAG_reference_type: | |
4297a3f0 AV |
20887 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
20888 | break; | |
20889 | case DW_TAG_rvalue_reference_type: | |
20890 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
20891 | break; |
20892 | case DW_TAG_const_type: | |
f792889a | 20893 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
20894 | break; |
20895 | case DW_TAG_volatile_type: | |
f792889a | 20896 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 20897 | break; |
06d66ee9 TT |
20898 | case DW_TAG_restrict_type: |
20899 | this_type = read_tag_restrict_type (die, cu); | |
20900 | break; | |
c906108c | 20901 | case DW_TAG_string_type: |
f792889a | 20902 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
20903 | break; |
20904 | case DW_TAG_typedef: | |
f792889a | 20905 | this_type = read_typedef (die, cu); |
c906108c | 20906 | break; |
a02abb62 | 20907 | case DW_TAG_subrange_type: |
f792889a | 20908 | this_type = read_subrange_type (die, cu); |
a02abb62 | 20909 | break; |
c906108c | 20910 | case DW_TAG_base_type: |
f792889a | 20911 | this_type = read_base_type (die, cu); |
c906108c | 20912 | break; |
81a17f79 | 20913 | case DW_TAG_unspecified_type: |
f792889a | 20914 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 20915 | break; |
0114d602 DJ |
20916 | case DW_TAG_namespace: |
20917 | this_type = read_namespace_type (die, cu); | |
20918 | break; | |
f55ee35c JK |
20919 | case DW_TAG_module: |
20920 | this_type = read_module_type (die, cu); | |
20921 | break; | |
a2c2acaf MW |
20922 | case DW_TAG_atomic_type: |
20923 | this_type = read_tag_atomic_type (die, cu); | |
20924 | break; | |
c906108c | 20925 | default: |
b98664d3 | 20926 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 20927 | dwarf_tag_name (die->tag)); |
c906108c SS |
20928 | break; |
20929 | } | |
63d06c5c | 20930 | |
f792889a | 20931 | return this_type; |
63d06c5c DC |
20932 | } |
20933 | ||
abc72ce4 DE |
20934 | /* See if we can figure out if the class lives in a namespace. We do |
20935 | this by looking for a member function; its demangled name will | |
20936 | contain namespace info, if there is any. | |
20937 | Return the computed name or NULL. | |
20938 | Space for the result is allocated on the objfile's obstack. | |
20939 | This is the full-die version of guess_partial_die_structure_name. | |
20940 | In this case we know DIE has no useful parent. */ | |
20941 | ||
43816ebc | 20942 | static const char * |
abc72ce4 DE |
20943 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
20944 | { | |
20945 | struct die_info *spec_die; | |
20946 | struct dwarf2_cu *spec_cu; | |
20947 | struct die_info *child; | |
518817b3 | 20948 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 DE |
20949 | |
20950 | spec_cu = cu; | |
20951 | spec_die = die_specification (die, &spec_cu); | |
20952 | if (spec_die != NULL) | |
20953 | { | |
20954 | die = spec_die; | |
20955 | cu = spec_cu; | |
20956 | } | |
20957 | ||
20958 | for (child = die->child; | |
20959 | child != NULL; | |
20960 | child = child->sibling) | |
20961 | { | |
20962 | if (child->tag == DW_TAG_subprogram) | |
20963 | { | |
73b9be8b | 20964 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 20965 | |
7d45c7c3 | 20966 | if (linkage_name != NULL) |
abc72ce4 | 20967 | { |
43816ebc TT |
20968 | gdb::unique_xmalloc_ptr<char> actual_name |
20969 | (language_class_name_from_physname (cu->language_defn, | |
20970 | linkage_name)); | |
20971 | const char *name = NULL; | |
abc72ce4 DE |
20972 | |
20973 | if (actual_name != NULL) | |
20974 | { | |
15d034d0 | 20975 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
20976 | |
20977 | if (die_name != NULL | |
43816ebc | 20978 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
20979 | { |
20980 | /* Strip off the class name from the full name. | |
20981 | We want the prefix. */ | |
20982 | int die_name_len = strlen (die_name); | |
43816ebc TT |
20983 | int actual_name_len = strlen (actual_name.get ()); |
20984 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
20985 | |
20986 | /* Test for '::' as a sanity check. */ | |
20987 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 20988 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 20989 | name = obstack_strndup ( |
e3b94546 | 20990 | &objfile->per_bfd->storage_obstack, |
43816ebc | 20991 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
20992 | } |
20993 | } | |
abc72ce4 DE |
20994 | return name; |
20995 | } | |
20996 | } | |
20997 | } | |
20998 | ||
20999 | return NULL; | |
21000 | } | |
21001 | ||
96408a79 SA |
21002 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
21003 | prefix part in such case. See | |
21004 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
21005 | ||
a121b7c1 | 21006 | static const char * |
96408a79 SA |
21007 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
21008 | { | |
21009 | struct attribute *attr; | |
e6a959d6 | 21010 | const char *base; |
96408a79 SA |
21011 | |
21012 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
21013 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
21014 | return NULL; | |
21015 | ||
7d45c7c3 | 21016 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
21017 | return NULL; |
21018 | ||
73b9be8b | 21019 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
21020 | if (attr == NULL || DW_STRING (attr) == NULL) |
21021 | return NULL; | |
21022 | ||
21023 | /* dwarf2_name had to be already called. */ | |
21024 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
21025 | ||
21026 | /* Strip the base name, keep any leading namespaces/classes. */ | |
21027 | base = strrchr (DW_STRING (attr), ':'); | |
21028 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
21029 | return ""; | |
21030 | ||
518817b3 | 21031 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0cf9feb9 TT |
21032 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
21033 | DW_STRING (attr), | |
21034 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
21035 | } |
21036 | ||
fdde2d81 | 21037 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 21038 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 21039 | |
0114d602 DJ |
21040 | For example, if we're within the method foo() in the following |
21041 | code: | |
21042 | ||
21043 | namespace N { | |
21044 | class C { | |
21045 | void foo () { | |
21046 | } | |
21047 | }; | |
21048 | } | |
21049 | ||
21050 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 21051 | |
0d5cff50 | 21052 | static const char * |
e142c38c | 21053 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 21054 | { |
518817b3 SM |
21055 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21056 | = cu->per_cu->dwarf2_per_objfile; | |
0114d602 DJ |
21057 | struct die_info *parent, *spec_die; |
21058 | struct dwarf2_cu *spec_cu; | |
21059 | struct type *parent_type; | |
a121b7c1 | 21060 | const char *retval; |
63d06c5c | 21061 | |
9c37b5ae | 21062 | if (cu->language != language_cplus |
c44af4eb TT |
21063 | && cu->language != language_fortran && cu->language != language_d |
21064 | && cu->language != language_rust) | |
0114d602 DJ |
21065 | return ""; |
21066 | ||
96408a79 SA |
21067 | retval = anonymous_struct_prefix (die, cu); |
21068 | if (retval) | |
21069 | return retval; | |
21070 | ||
0114d602 DJ |
21071 | /* We have to be careful in the presence of DW_AT_specification. |
21072 | For example, with GCC 3.4, given the code | |
21073 | ||
21074 | namespace N { | |
21075 | void foo() { | |
21076 | // Definition of N::foo. | |
21077 | } | |
21078 | } | |
21079 | ||
21080 | then we'll have a tree of DIEs like this: | |
21081 | ||
21082 | 1: DW_TAG_compile_unit | |
21083 | 2: DW_TAG_namespace // N | |
21084 | 3: DW_TAG_subprogram // declaration of N::foo | |
21085 | 4: DW_TAG_subprogram // definition of N::foo | |
21086 | DW_AT_specification // refers to die #3 | |
21087 | ||
21088 | Thus, when processing die #4, we have to pretend that we're in | |
21089 | the context of its DW_AT_specification, namely the contex of die | |
21090 | #3. */ | |
21091 | spec_cu = cu; | |
21092 | spec_die = die_specification (die, &spec_cu); | |
21093 | if (spec_die == NULL) | |
21094 | parent = die->parent; | |
21095 | else | |
63d06c5c | 21096 | { |
0114d602 DJ |
21097 | parent = spec_die->parent; |
21098 | cu = spec_cu; | |
63d06c5c | 21099 | } |
0114d602 DJ |
21100 | |
21101 | if (parent == NULL) | |
21102 | return ""; | |
98bfdba5 PA |
21103 | else if (parent->building_fullname) |
21104 | { | |
21105 | const char *name; | |
21106 | const char *parent_name; | |
21107 | ||
21108 | /* It has been seen on RealView 2.2 built binaries, | |
21109 | DW_TAG_template_type_param types actually _defined_ as | |
21110 | children of the parent class: | |
21111 | ||
21112 | enum E {}; | |
21113 | template class <class Enum> Class{}; | |
21114 | Class<enum E> class_e; | |
21115 | ||
21116 | 1: DW_TAG_class_type (Class) | |
21117 | 2: DW_TAG_enumeration_type (E) | |
21118 | 3: DW_TAG_enumerator (enum1:0) | |
21119 | 3: DW_TAG_enumerator (enum2:1) | |
21120 | ... | |
21121 | 2: DW_TAG_template_type_param | |
21122 | DW_AT_type DW_FORM_ref_udata (E) | |
21123 | ||
21124 | Besides being broken debug info, it can put GDB into an | |
21125 | infinite loop. Consider: | |
21126 | ||
21127 | When we're building the full name for Class<E>, we'll start | |
21128 | at Class, and go look over its template type parameters, | |
21129 | finding E. We'll then try to build the full name of E, and | |
21130 | reach here. We're now trying to build the full name of E, | |
21131 | and look over the parent DIE for containing scope. In the | |
21132 | broken case, if we followed the parent DIE of E, we'd again | |
21133 | find Class, and once again go look at its template type | |
21134 | arguments, etc., etc. Simply don't consider such parent die | |
21135 | as source-level parent of this die (it can't be, the language | |
21136 | doesn't allow it), and break the loop here. */ | |
21137 | name = dwarf2_name (die, cu); | |
21138 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 21139 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
21140 | name ? name : "<unknown>", |
21141 | parent_name ? parent_name : "<unknown>"); | |
21142 | return ""; | |
21143 | } | |
63d06c5c | 21144 | else |
0114d602 DJ |
21145 | switch (parent->tag) |
21146 | { | |
63d06c5c | 21147 | case DW_TAG_namespace: |
0114d602 | 21148 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
21149 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
21150 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
21151 | Work around this problem here. */ | |
21152 | if (cu->language == language_cplus | |
e86ca25f | 21153 | && strcmp (TYPE_NAME (parent_type), "::") == 0) |
acebe513 | 21154 | return ""; |
0114d602 | 21155 | /* We give a name to even anonymous namespaces. */ |
e86ca25f | 21156 | return TYPE_NAME (parent_type); |
63d06c5c | 21157 | case DW_TAG_class_type: |
680b30c7 | 21158 | case DW_TAG_interface_type: |
63d06c5c | 21159 | case DW_TAG_structure_type: |
0114d602 | 21160 | case DW_TAG_union_type: |
f55ee35c | 21161 | case DW_TAG_module: |
0114d602 | 21162 | parent_type = read_type_die (parent, cu); |
e86ca25f TT |
21163 | if (TYPE_NAME (parent_type) != NULL) |
21164 | return TYPE_NAME (parent_type); | |
0114d602 DJ |
21165 | else |
21166 | /* An anonymous structure is only allowed non-static data | |
21167 | members; no typedefs, no member functions, et cetera. | |
21168 | So it does not need a prefix. */ | |
21169 | return ""; | |
abc72ce4 | 21170 | case DW_TAG_compile_unit: |
95554aad | 21171 | case DW_TAG_partial_unit: |
abc72ce4 DE |
21172 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
21173 | if (cu->language == language_cplus | |
fd5866f6 | 21174 | && !dwarf2_per_objfile->types.empty () |
abc72ce4 DE |
21175 | && die->child != NULL |
21176 | && (die->tag == DW_TAG_class_type | |
21177 | || die->tag == DW_TAG_structure_type | |
21178 | || die->tag == DW_TAG_union_type)) | |
21179 | { | |
43816ebc | 21180 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
21181 | if (name != NULL) |
21182 | return name; | |
21183 | } | |
21184 | return ""; | |
0a4b0913 AB |
21185 | case DW_TAG_subprogram: |
21186 | /* Nested subroutines in Fortran get a prefix with the name | |
21187 | of the parent's subroutine. */ | |
21188 | if (cu->language == language_fortran) | |
21189 | { | |
21190 | if ((die->tag == DW_TAG_subprogram) | |
21191 | && (dwarf2_name (parent, cu) != NULL)) | |
21192 | return dwarf2_name (parent, cu); | |
21193 | } | |
21194 | return determine_prefix (parent, cu); | |
3d567982 TT |
21195 | case DW_TAG_enumeration_type: |
21196 | parent_type = read_type_die (parent, cu); | |
21197 | if (TYPE_DECLARED_CLASS (parent_type)) | |
21198 | { | |
e86ca25f TT |
21199 | if (TYPE_NAME (parent_type) != NULL) |
21200 | return TYPE_NAME (parent_type); | |
3d567982 TT |
21201 | return ""; |
21202 | } | |
21203 | /* Fall through. */ | |
63d06c5c | 21204 | default: |
8176b9b8 | 21205 | return determine_prefix (parent, cu); |
63d06c5c | 21206 | } |
63d06c5c DC |
21207 | } |
21208 | ||
3e43a32a MS |
21209 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
21210 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
21211 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
21212 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
21213 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 21214 | |
f55ee35c | 21215 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
21216 | |
21217 | static char * | |
f55ee35c JK |
21218 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
21219 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 21220 | { |
f55ee35c | 21221 | const char *lead = ""; |
5c315b68 | 21222 | const char *sep; |
63d06c5c | 21223 | |
3e43a32a MS |
21224 | if (suffix == NULL || suffix[0] == '\0' |
21225 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 21226 | sep = ""; |
45280282 IB |
21227 | else if (cu->language == language_d) |
21228 | { | |
21229 | /* For D, the 'main' function could be defined in any module, but it | |
21230 | should never be prefixed. */ | |
21231 | if (strcmp (suffix, "D main") == 0) | |
21232 | { | |
21233 | prefix = ""; | |
21234 | sep = ""; | |
21235 | } | |
21236 | else | |
21237 | sep = "."; | |
21238 | } | |
f55ee35c JK |
21239 | else if (cu->language == language_fortran && physname) |
21240 | { | |
21241 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
21242 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
21243 | ||
21244 | lead = "__"; | |
21245 | sep = "_MOD_"; | |
21246 | } | |
987504bb JJ |
21247 | else |
21248 | sep = "::"; | |
63d06c5c | 21249 | |
6dd47d34 DE |
21250 | if (prefix == NULL) |
21251 | prefix = ""; | |
21252 | if (suffix == NULL) | |
21253 | suffix = ""; | |
21254 | ||
987504bb JJ |
21255 | if (obs == NULL) |
21256 | { | |
3e43a32a | 21257 | char *retval |
224c3ddb SM |
21258 | = ((char *) |
21259 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 21260 | |
f55ee35c JK |
21261 | strcpy (retval, lead); |
21262 | strcat (retval, prefix); | |
6dd47d34 DE |
21263 | strcat (retval, sep); |
21264 | strcat (retval, suffix); | |
63d06c5c DC |
21265 | return retval; |
21266 | } | |
987504bb JJ |
21267 | else |
21268 | { | |
21269 | /* We have an obstack. */ | |
f55ee35c | 21270 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 21271 | } |
63d06c5c DC |
21272 | } |
21273 | ||
71c25dea TT |
21274 | /* Get name of a die, return NULL if not found. */ |
21275 | ||
15d034d0 TT |
21276 | static const char * |
21277 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
be1e3d3e | 21278 | struct objfile *objfile) |
71c25dea TT |
21279 | { |
21280 | if (name && cu->language == language_cplus) | |
21281 | { | |
2f408ecb | 21282 | std::string canon_name = cp_canonicalize_string (name); |
71c25dea | 21283 | |
2f408ecb | 21284 | if (!canon_name.empty ()) |
71c25dea | 21285 | { |
2f408ecb | 21286 | if (canon_name != name) |
be1e3d3e | 21287 | name = objfile->intern (canon_name); |
71c25dea TT |
21288 | } |
21289 | } | |
21290 | ||
21291 | return name; | |
c906108c SS |
21292 | } |
21293 | ||
96553a0c DE |
21294 | /* Get name of a die, return NULL if not found. |
21295 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 21296 | |
15d034d0 | 21297 | static const char * |
e142c38c | 21298 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
21299 | { |
21300 | struct attribute *attr; | |
518817b3 | 21301 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
9219021c | 21302 | |
e142c38c | 21303 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 21304 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 21305 | && die->tag != DW_TAG_namespace |
53832f31 TT |
21306 | && die->tag != DW_TAG_class_type |
21307 | && die->tag != DW_TAG_interface_type | |
21308 | && die->tag != DW_TAG_structure_type | |
21309 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
21310 | return NULL; |
21311 | ||
21312 | switch (die->tag) | |
21313 | { | |
21314 | case DW_TAG_compile_unit: | |
95554aad | 21315 | case DW_TAG_partial_unit: |
71c25dea TT |
21316 | /* Compilation units have a DW_AT_name that is a filename, not |
21317 | a source language identifier. */ | |
21318 | case DW_TAG_enumeration_type: | |
21319 | case DW_TAG_enumerator: | |
21320 | /* These tags always have simple identifiers already; no need | |
21321 | to canonicalize them. */ | |
21322 | return DW_STRING (attr); | |
907af001 | 21323 | |
96553a0c DE |
21324 | case DW_TAG_namespace: |
21325 | if (attr != NULL && DW_STRING (attr) != NULL) | |
21326 | return DW_STRING (attr); | |
21327 | return CP_ANONYMOUS_NAMESPACE_STR; | |
21328 | ||
907af001 UW |
21329 | case DW_TAG_class_type: |
21330 | case DW_TAG_interface_type: | |
21331 | case DW_TAG_structure_type: | |
21332 | case DW_TAG_union_type: | |
21333 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
21334 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
21335 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
21336 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 21337 | if (attr && DW_STRING (attr) |
61012eef GB |
21338 | && (startswith (DW_STRING (attr), "._") |
21339 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 21340 | return NULL; |
53832f31 TT |
21341 | |
21342 | /* GCC might emit a nameless typedef that has a linkage name. See | |
21343 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
21344 | if (!attr || DW_STRING (attr) == NULL) | |
21345 | { | |
73b9be8b | 21346 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
21347 | if (attr == NULL || DW_STRING (attr) == NULL) |
21348 | return NULL; | |
21349 | ||
df5c6c50 JK |
21350 | /* Avoid demangling DW_STRING (attr) the second time on a second |
21351 | call for the same DIE. */ | |
21352 | if (!DW_STRING_IS_CANONICAL (attr)) | |
53832f31 | 21353 | { |
43816ebc TT |
21354 | gdb::unique_xmalloc_ptr<char> demangled |
21355 | (gdb_demangle (DW_STRING (attr), DMGL_TYPES)); | |
4f180d53 AT |
21356 | if (demangled == nullptr) |
21357 | return nullptr; | |
43816ebc | 21358 | |
be1e3d3e | 21359 | DW_STRING (attr) = objfile->intern (demangled.get ()); |
53832f31 | 21360 | DW_STRING_IS_CANONICAL (attr) = 1; |
53832f31 | 21361 | } |
67430cd0 TT |
21362 | |
21363 | /* Strip any leading namespaces/classes, keep only the base name. | |
21364 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
21365 | const char *base = strrchr (DW_STRING (attr), ':'); | |
21366 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
21367 | return &base[1]; | |
21368 | else | |
21369 | return DW_STRING (attr); | |
53832f31 | 21370 | } |
907af001 UW |
21371 | break; |
21372 | ||
71c25dea | 21373 | default: |
907af001 UW |
21374 | break; |
21375 | } | |
21376 | ||
21377 | if (!DW_STRING_IS_CANONICAL (attr)) | |
21378 | { | |
be1e3d3e TT |
21379 | DW_STRING (attr) = dwarf2_canonicalize_name (DW_STRING (attr), cu, |
21380 | objfile); | |
907af001 | 21381 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 21382 | } |
907af001 | 21383 | return DW_STRING (attr); |
9219021c DC |
21384 | } |
21385 | ||
21386 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
21387 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
21388 | containing the return value on output. */ | |
9219021c DC |
21389 | |
21390 | static struct die_info * | |
f2f0e013 | 21391 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
21392 | { |
21393 | struct attribute *attr; | |
9219021c | 21394 | |
f2f0e013 | 21395 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
21396 | if (attr == NULL) |
21397 | return NULL; | |
21398 | ||
f2f0e013 | 21399 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
21400 | } |
21401 | ||
f9aca02d | 21402 | static void |
d97bc12b | 21403 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
21404 | { |
21405 | unsigned int i; | |
21406 | ||
d97bc12b | 21407 | print_spaces (indent, f); |
9d8780f0 | 21408 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 21409 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 21410 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
21411 | |
21412 | if (die->parent != NULL) | |
21413 | { | |
21414 | print_spaces (indent, f); | |
9d8780f0 SM |
21415 | fprintf_unfiltered (f, " parent at offset: %s\n", |
21416 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
21417 | } |
21418 | ||
21419 | print_spaces (indent, f); | |
21420 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 21421 | dwarf_bool_name (die->child != NULL)); |
c906108c | 21422 | |
d97bc12b DE |
21423 | print_spaces (indent, f); |
21424 | fprintf_unfiltered (f, " attributes:\n"); | |
21425 | ||
c906108c SS |
21426 | for (i = 0; i < die->num_attrs; ++i) |
21427 | { | |
d97bc12b DE |
21428 | print_spaces (indent, f); |
21429 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
21430 | dwarf_attr_name (die->attrs[i].name), |
21431 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 21432 | |
c906108c SS |
21433 | switch (die->attrs[i].form) |
21434 | { | |
c906108c | 21435 | case DW_FORM_addr: |
336d760d | 21436 | case DW_FORM_addrx: |
3019eac3 | 21437 | case DW_FORM_GNU_addr_index: |
d97bc12b | 21438 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 21439 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
21440 | break; |
21441 | case DW_FORM_block2: | |
21442 | case DW_FORM_block4: | |
21443 | case DW_FORM_block: | |
21444 | case DW_FORM_block1: | |
56eb65bd SP |
21445 | fprintf_unfiltered (f, "block: size %s", |
21446 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 21447 | break; |
2dc7f7b3 | 21448 | case DW_FORM_exprloc: |
56eb65bd SP |
21449 | fprintf_unfiltered (f, "expression: size %s", |
21450 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 21451 | break; |
0224619f JK |
21452 | case DW_FORM_data16: |
21453 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
21454 | break; | |
4568ecf9 DE |
21455 | case DW_FORM_ref_addr: |
21456 | fprintf_unfiltered (f, "ref address: "); | |
21457 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
21458 | break; | |
36586728 TT |
21459 | case DW_FORM_GNU_ref_alt: |
21460 | fprintf_unfiltered (f, "alt ref address: "); | |
21461 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
21462 | break; | |
10b3939b DJ |
21463 | case DW_FORM_ref1: |
21464 | case DW_FORM_ref2: | |
21465 | case DW_FORM_ref4: | |
4568ecf9 DE |
21466 | case DW_FORM_ref8: |
21467 | case DW_FORM_ref_udata: | |
d97bc12b | 21468 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 21469 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 21470 | break; |
c906108c SS |
21471 | case DW_FORM_data1: |
21472 | case DW_FORM_data2: | |
21473 | case DW_FORM_data4: | |
ce5d95e1 | 21474 | case DW_FORM_data8: |
c906108c SS |
21475 | case DW_FORM_udata: |
21476 | case DW_FORM_sdata: | |
43bbcdc2 PH |
21477 | fprintf_unfiltered (f, "constant: %s", |
21478 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 21479 | break; |
2dc7f7b3 TT |
21480 | case DW_FORM_sec_offset: |
21481 | fprintf_unfiltered (f, "section offset: %s", | |
21482 | pulongest (DW_UNSND (&die->attrs[i]))); | |
21483 | break; | |
55f1336d | 21484 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
21485 | fprintf_unfiltered (f, "signature: %s", |
21486 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 21487 | break; |
c906108c | 21488 | case DW_FORM_string: |
4bdf3d34 | 21489 | case DW_FORM_strp: |
43988095 | 21490 | case DW_FORM_line_strp: |
cf532bd1 | 21491 | case DW_FORM_strx: |
3019eac3 | 21492 | case DW_FORM_GNU_str_index: |
36586728 | 21493 | case DW_FORM_GNU_strp_alt: |
8285870a | 21494 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 21495 | DW_STRING (&die->attrs[i]) |
8285870a JK |
21496 | ? DW_STRING (&die->attrs[i]) : "", |
21497 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
21498 | break; |
21499 | case DW_FORM_flag: | |
21500 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 21501 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 21502 | else |
d97bc12b | 21503 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 21504 | break; |
2dc7f7b3 TT |
21505 | case DW_FORM_flag_present: |
21506 | fprintf_unfiltered (f, "flag: TRUE"); | |
21507 | break; | |
a8329558 | 21508 | case DW_FORM_indirect: |
0963b4bd MS |
21509 | /* The reader will have reduced the indirect form to |
21510 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 21511 | fprintf_unfiltered (f, |
3e43a32a | 21512 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 21513 | break; |
663c44ac JK |
21514 | case DW_FORM_implicit_const: |
21515 | fprintf_unfiltered (f, "constant: %s", | |
21516 | plongest (DW_SND (&die->attrs[i]))); | |
21517 | break; | |
c906108c | 21518 | default: |
d97bc12b | 21519 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 21520 | die->attrs[i].form); |
d97bc12b | 21521 | break; |
c906108c | 21522 | } |
d97bc12b | 21523 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
21524 | } |
21525 | } | |
21526 | ||
f9aca02d | 21527 | static void |
d97bc12b | 21528 | dump_die_for_error (struct die_info *die) |
c906108c | 21529 | { |
d97bc12b DE |
21530 | dump_die_shallow (gdb_stderr, 0, die); |
21531 | } | |
21532 | ||
21533 | static void | |
21534 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
21535 | { | |
21536 | int indent = level * 4; | |
21537 | ||
21538 | gdb_assert (die != NULL); | |
21539 | ||
21540 | if (level >= max_level) | |
21541 | return; | |
21542 | ||
21543 | dump_die_shallow (f, indent, die); | |
21544 | ||
21545 | if (die->child != NULL) | |
c906108c | 21546 | { |
d97bc12b DE |
21547 | print_spaces (indent, f); |
21548 | fprintf_unfiltered (f, " Children:"); | |
21549 | if (level + 1 < max_level) | |
21550 | { | |
21551 | fprintf_unfiltered (f, "\n"); | |
21552 | dump_die_1 (f, level + 1, max_level, die->child); | |
21553 | } | |
21554 | else | |
21555 | { | |
3e43a32a MS |
21556 | fprintf_unfiltered (f, |
21557 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
21558 | } |
21559 | } | |
21560 | ||
21561 | if (die->sibling != NULL && level > 0) | |
21562 | { | |
21563 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
21564 | } |
21565 | } | |
21566 | ||
d97bc12b DE |
21567 | /* This is called from the pdie macro in gdbinit.in. |
21568 | It's not static so gcc will keep a copy callable from gdb. */ | |
21569 | ||
21570 | void | |
21571 | dump_die (struct die_info *die, int max_level) | |
21572 | { | |
21573 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
21574 | } | |
21575 | ||
f9aca02d | 21576 | static void |
51545339 | 21577 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21578 | { |
51545339 | 21579 | void **slot; |
c906108c | 21580 | |
9c541725 PA |
21581 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
21582 | to_underlying (die->sect_off), | |
b64f50a1 | 21583 | INSERT); |
51545339 DJ |
21584 | |
21585 | *slot = die; | |
c906108c SS |
21586 | } |
21587 | ||
348e048f DE |
21588 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
21589 | On entry *REF_CU is the CU of SRC_DIE. | |
21590 | On exit *REF_CU is the CU of the result. */ | |
21591 | ||
21592 | static struct die_info * | |
ff39bb5e | 21593 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
21594 | struct dwarf2_cu **ref_cu) |
21595 | { | |
21596 | struct die_info *die; | |
21597 | ||
cd6c91b4 | 21598 | if (attr->form_is_ref ()) |
348e048f | 21599 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 21600 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
21601 | die = follow_die_sig (src_die, attr, ref_cu); |
21602 | else | |
21603 | { | |
21604 | dump_die_for_error (src_die); | |
21605 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
518817b3 | 21606 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
348e048f DE |
21607 | } |
21608 | ||
21609 | return die; | |
03dd20cc DJ |
21610 | } |
21611 | ||
5c631832 | 21612 | /* Follow reference OFFSET. |
673bfd45 DE |
21613 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
21614 | On exit *REF_CU is the CU of the result. | |
21615 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 21616 | |
f9aca02d | 21617 | static struct die_info * |
9c541725 | 21618 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 21619 | struct dwarf2_cu **ref_cu) |
c906108c | 21620 | { |
10b3939b | 21621 | struct die_info temp_die; |
f2f0e013 | 21622 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
518817b3 SM |
21623 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21624 | = cu->per_cu->dwarf2_per_objfile; | |
10b3939b | 21625 | |
348e048f DE |
21626 | gdb_assert (cu->per_cu != NULL); |
21627 | ||
98bfdba5 PA |
21628 | target_cu = cu; |
21629 | ||
3019eac3 | 21630 | if (cu->per_cu->is_debug_types) |
348e048f DE |
21631 | { |
21632 | /* .debug_types CUs cannot reference anything outside their CU. | |
21633 | If they need to, they have to reference a signatured type via | |
55f1336d | 21634 | DW_FORM_ref_sig8. */ |
4057dfde | 21635 | if (!cu->header.offset_in_cu_p (sect_off)) |
5c631832 | 21636 | return NULL; |
348e048f | 21637 | } |
36586728 | 21638 | else if (offset_in_dwz != cu->per_cu->is_dwz |
4057dfde | 21639 | || !cu->header.offset_in_cu_p (sect_off)) |
10b3939b DJ |
21640 | { |
21641 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 21642 | |
9c541725 | 21643 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 21644 | dwarf2_per_objfile); |
03dd20cc DJ |
21645 | |
21646 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad | 21647 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 21648 | load_full_comp_unit (per_cu, false, cu->language); |
03dd20cc | 21649 | |
10b3939b DJ |
21650 | target_cu = per_cu->cu; |
21651 | } | |
98bfdba5 PA |
21652 | else if (cu->dies == NULL) |
21653 | { | |
21654 | /* We're loading full DIEs during partial symbol reading. */ | |
21655 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
58f0c718 | 21656 | load_full_comp_unit (cu->per_cu, false, language_minimal); |
98bfdba5 | 21657 | } |
c906108c | 21658 | |
f2f0e013 | 21659 | *ref_cu = target_cu; |
9c541725 | 21660 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
21661 | |
21662 | if (target_cu != cu) | |
21663 | target_cu->ancestor = cu; | |
21664 | ||
9a3c8263 | 21665 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
21666 | &temp_die, |
21667 | to_underlying (sect_off)); | |
5c631832 | 21668 | } |
10b3939b | 21669 | |
5c631832 JK |
21670 | /* Follow reference attribute ATTR of SRC_DIE. |
21671 | On entry *REF_CU is the CU of SRC_DIE. | |
21672 | On exit *REF_CU is the CU of the result. */ | |
21673 | ||
21674 | static struct die_info * | |
ff39bb5e | 21675 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
21676 | struct dwarf2_cu **ref_cu) |
21677 | { | |
0826b30a | 21678 | sect_offset sect_off = attr->get_ref_die_offset (); |
5c631832 JK |
21679 | struct dwarf2_cu *cu = *ref_cu; |
21680 | struct die_info *die; | |
21681 | ||
9c541725 | 21682 | die = follow_die_offset (sect_off, |
36586728 TT |
21683 | (attr->form == DW_FORM_GNU_ref_alt |
21684 | || cu->per_cu->is_dwz), | |
21685 | ref_cu); | |
5c631832 | 21686 | if (!die) |
9d8780f0 SM |
21687 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
21688 | "at %s [in module %s]"), | |
21689 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
518817b3 | 21690 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
348e048f | 21691 | |
5c631832 JK |
21692 | return die; |
21693 | } | |
21694 | ||
d4c9a4f8 | 21695 | /* See read.h. */ |
5c631832 JK |
21696 | |
21697 | struct dwarf2_locexpr_baton | |
9c541725 | 21698 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
d4c9a4f8 | 21699 | dwarf2_per_cu_data *per_cu, |
8b9737bf | 21700 | CORE_ADDR (*get_frame_pc) (void *baton), |
e4a62c65 | 21701 | void *baton, bool resolve_abstract_p) |
5c631832 | 21702 | { |
918dd910 | 21703 | struct dwarf2_cu *cu; |
5c631832 JK |
21704 | struct die_info *die; |
21705 | struct attribute *attr; | |
21706 | struct dwarf2_locexpr_baton retval; | |
12359b5e SM |
21707 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
21708 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8cf6f0b1 | 21709 | |
918dd910 | 21710 | if (per_cu->cu == NULL) |
58f0c718 | 21711 | load_cu (per_cu, false); |
918dd910 | 21712 | cu = per_cu->cu; |
cc12ce38 DE |
21713 | if (cu == NULL) |
21714 | { | |
21715 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
21716 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
21717 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
21718 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 21719 | } |
918dd910 | 21720 | |
9c541725 | 21721 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 21722 | if (!die) |
9d8780f0 SM |
21723 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
21724 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
21725 | |
21726 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 21727 | if (!attr && resolve_abstract_p |
3360b6e7 | 21728 | && (dwarf2_per_objfile->abstract_to_concrete.find (die->sect_off) |
e4a62c65 TV |
21729 | != dwarf2_per_objfile->abstract_to_concrete.end ())) |
21730 | { | |
21731 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
b3b3bada | 21732 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
eba4caf2 | 21733 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
e4a62c65 | 21734 | |
3360b6e7 TV |
21735 | for (const auto &cand_off |
21736 | : dwarf2_per_objfile->abstract_to_concrete[die->sect_off]) | |
e4a62c65 | 21737 | { |
3360b6e7 TV |
21738 | struct dwarf2_cu *cand_cu = cu; |
21739 | struct die_info *cand | |
21740 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
21741 | if (!cand | |
21742 | || !cand->parent | |
e4a62c65 TV |
21743 | || cand->parent->tag != DW_TAG_subprogram) |
21744 | continue; | |
21745 | ||
21746 | CORE_ADDR pc_low, pc_high; | |
21747 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
21748 | if (pc_low == ((CORE_ADDR) -1)) |
21749 | continue; | |
21750 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
21751 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
21752 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
21753 | continue; |
21754 | ||
21755 | die = cand; | |
21756 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
21757 | break; | |
21758 | } | |
21759 | } | |
21760 | ||
5c631832 JK |
21761 | if (!attr) |
21762 | { | |
e103e986 JK |
21763 | /* DWARF: "If there is no such attribute, then there is no effect.". |
21764 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 21765 | |
e103e986 | 21766 | retval.data = NULL; |
5c631832 JK |
21767 | retval.size = 0; |
21768 | } | |
cd6c91b4 | 21769 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
21770 | { |
21771 | struct dwarf2_loclist_baton loclist_baton; | |
21772 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
21773 | size_t size; | |
21774 | ||
21775 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
21776 | ||
21777 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
21778 | &size, pc); | |
21779 | retval.size = size; | |
21780 | } | |
5c631832 JK |
21781 | else |
21782 | { | |
4fc6c0d5 | 21783 | if (!attr->form_is_block ()) |
9d8780f0 | 21784 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 21785 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 21786 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
21787 | |
21788 | retval.data = DW_BLOCK (attr)->data; | |
21789 | retval.size = DW_BLOCK (attr)->size; | |
21790 | } | |
21791 | retval.per_cu = cu->per_cu; | |
918dd910 | 21792 | |
ed2dc618 | 21793 | age_cached_comp_units (dwarf2_per_objfile); |
918dd910 | 21794 | |
5c631832 | 21795 | return retval; |
348e048f DE |
21796 | } |
21797 | ||
d4c9a4f8 | 21798 | /* See read.h. */ |
8b9737bf TT |
21799 | |
21800 | struct dwarf2_locexpr_baton | |
21801 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
d4c9a4f8 | 21802 | dwarf2_per_cu_data *per_cu, |
8b9737bf TT |
21803 | CORE_ADDR (*get_frame_pc) (void *baton), |
21804 | void *baton) | |
21805 | { | |
9c541725 | 21806 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 21807 | |
9c541725 | 21808 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, get_frame_pc, baton); |
8b9737bf TT |
21809 | } |
21810 | ||
b6807d98 TT |
21811 | /* Write a constant of a given type as target-ordered bytes into |
21812 | OBSTACK. */ | |
21813 | ||
21814 | static const gdb_byte * | |
21815 | write_constant_as_bytes (struct obstack *obstack, | |
21816 | enum bfd_endian byte_order, | |
21817 | struct type *type, | |
21818 | ULONGEST value, | |
21819 | LONGEST *len) | |
21820 | { | |
21821 | gdb_byte *result; | |
21822 | ||
21823 | *len = TYPE_LENGTH (type); | |
224c3ddb | 21824 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
21825 | store_unsigned_integer (result, *len, byte_order, value); |
21826 | ||
21827 | return result; | |
21828 | } | |
21829 | ||
d4c9a4f8 | 21830 | /* See read.h. */ |
b6807d98 TT |
21831 | |
21832 | const gdb_byte * | |
9c541725 | 21833 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
d4c9a4f8 SM |
21834 | dwarf2_per_cu_data *per_cu, |
21835 | obstack *obstack, | |
b6807d98 TT |
21836 | LONGEST *len) |
21837 | { | |
21838 | struct dwarf2_cu *cu; | |
21839 | struct die_info *die; | |
21840 | struct attribute *attr; | |
21841 | const gdb_byte *result = NULL; | |
21842 | struct type *type; | |
21843 | LONGEST value; | |
21844 | enum bfd_endian byte_order; | |
e3b94546 | 21845 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
b6807d98 | 21846 | |
b6807d98 | 21847 | if (per_cu->cu == NULL) |
58f0c718 | 21848 | load_cu (per_cu, false); |
b6807d98 | 21849 | cu = per_cu->cu; |
cc12ce38 DE |
21850 | if (cu == NULL) |
21851 | { | |
21852 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
21853 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
21854 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
21855 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 21856 | } |
b6807d98 | 21857 | |
9c541725 | 21858 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 21859 | if (!die) |
9d8780f0 SM |
21860 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
21861 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
21862 | |
21863 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
21864 | if (attr == NULL) | |
21865 | return NULL; | |
21866 | ||
e3b94546 | 21867 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
21868 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
21869 | ||
21870 | switch (attr->form) | |
21871 | { | |
21872 | case DW_FORM_addr: | |
336d760d | 21873 | case DW_FORM_addrx: |
b6807d98 TT |
21874 | case DW_FORM_GNU_addr_index: |
21875 | { | |
21876 | gdb_byte *tem; | |
21877 | ||
21878 | *len = cu->header.addr_size; | |
224c3ddb | 21879 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
21880 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
21881 | result = tem; | |
21882 | } | |
21883 | break; | |
21884 | case DW_FORM_string: | |
21885 | case DW_FORM_strp: | |
cf532bd1 | 21886 | case DW_FORM_strx: |
b6807d98 TT |
21887 | case DW_FORM_GNU_str_index: |
21888 | case DW_FORM_GNU_strp_alt: | |
21889 | /* DW_STRING is already allocated on the objfile obstack, point | |
21890 | directly to it. */ | |
21891 | result = (const gdb_byte *) DW_STRING (attr); | |
21892 | *len = strlen (DW_STRING (attr)); | |
21893 | break; | |
21894 | case DW_FORM_block1: | |
21895 | case DW_FORM_block2: | |
21896 | case DW_FORM_block4: | |
21897 | case DW_FORM_block: | |
21898 | case DW_FORM_exprloc: | |
0224619f | 21899 | case DW_FORM_data16: |
b6807d98 TT |
21900 | result = DW_BLOCK (attr)->data; |
21901 | *len = DW_BLOCK (attr)->size; | |
21902 | break; | |
21903 | ||
21904 | /* The DW_AT_const_value attributes are supposed to carry the | |
21905 | symbol's value "represented as it would be on the target | |
21906 | architecture." By the time we get here, it's already been | |
21907 | converted to host endianness, so we just need to sign- or | |
21908 | zero-extend it as appropriate. */ | |
21909 | case DW_FORM_data1: | |
21910 | type = die_type (die, cu); | |
21911 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
21912 | if (result == NULL) | |
21913 | result = write_constant_as_bytes (obstack, byte_order, | |
21914 | type, value, len); | |
21915 | break; | |
21916 | case DW_FORM_data2: | |
21917 | type = die_type (die, cu); | |
21918 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
21919 | if (result == NULL) | |
21920 | result = write_constant_as_bytes (obstack, byte_order, | |
21921 | type, value, len); | |
21922 | break; | |
21923 | case DW_FORM_data4: | |
21924 | type = die_type (die, cu); | |
21925 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
21926 | if (result == NULL) | |
21927 | result = write_constant_as_bytes (obstack, byte_order, | |
21928 | type, value, len); | |
21929 | break; | |
21930 | case DW_FORM_data8: | |
21931 | type = die_type (die, cu); | |
21932 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
21933 | if (result == NULL) | |
21934 | result = write_constant_as_bytes (obstack, byte_order, | |
21935 | type, value, len); | |
21936 | break; | |
21937 | ||
21938 | case DW_FORM_sdata: | |
663c44ac | 21939 | case DW_FORM_implicit_const: |
b6807d98 TT |
21940 | type = die_type (die, cu); |
21941 | result = write_constant_as_bytes (obstack, byte_order, | |
21942 | type, DW_SND (attr), len); | |
21943 | break; | |
21944 | ||
21945 | case DW_FORM_udata: | |
21946 | type = die_type (die, cu); | |
21947 | result = write_constant_as_bytes (obstack, byte_order, | |
21948 | type, DW_UNSND (attr), len); | |
21949 | break; | |
21950 | ||
21951 | default: | |
b98664d3 | 21952 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
21953 | dwarf_form_name (attr->form)); |
21954 | break; | |
21955 | } | |
21956 | ||
21957 | return result; | |
21958 | } | |
21959 | ||
d4c9a4f8 | 21960 | /* See read.h. */ |
7942e96e AA |
21961 | |
21962 | struct type * | |
9c541725 | 21963 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
d4c9a4f8 | 21964 | dwarf2_per_cu_data *per_cu) |
7942e96e AA |
21965 | { |
21966 | struct dwarf2_cu *cu; | |
21967 | struct die_info *die; | |
21968 | ||
7942e96e | 21969 | if (per_cu->cu == NULL) |
58f0c718 | 21970 | load_cu (per_cu, false); |
7942e96e AA |
21971 | cu = per_cu->cu; |
21972 | if (!cu) | |
21973 | return NULL; | |
21974 | ||
9c541725 | 21975 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
21976 | if (!die) |
21977 | return NULL; | |
21978 | ||
21979 | return die_type (die, cu); | |
21980 | } | |
21981 | ||
8cb5117c | 21982 | /* See read.h. */ |
8a9b8146 TT |
21983 | |
21984 | struct type * | |
b64f50a1 | 21985 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
21986 | struct dwarf2_per_cu_data *per_cu) |
21987 | { | |
9c541725 | 21988 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
b64f50a1 | 21989 | return get_die_type_at_offset (die_offset_sect, per_cu); |
8a9b8146 TT |
21990 | } |
21991 | ||
ac9ec31b | 21992 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 21993 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
21994 | On exit *REF_CU is the CU of the result. |
21995 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
21996 | |
21997 | static struct die_info * | |
ac9ec31b DE |
21998 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
21999 | struct dwarf2_cu **ref_cu) | |
348e048f | 22000 | { |
348e048f | 22001 | struct die_info temp_die; |
c24bdb02 | 22002 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f DE |
22003 | struct die_info *die; |
22004 | ||
ac9ec31b DE |
22005 | /* While it might be nice to assert sig_type->type == NULL here, |
22006 | we can get here for DW_AT_imported_declaration where we need | |
22007 | the DIE not the type. */ | |
348e048f DE |
22008 | |
22009 | /* If necessary, add it to the queue and load its DIEs. */ | |
22010 | ||
95554aad | 22011 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 22012 | read_signatured_type (sig_type); |
348e048f | 22013 | |
348e048f | 22014 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 22015 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
22016 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
22017 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 22018 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 22019 | to_underlying (temp_die.sect_off)); |
348e048f DE |
22020 | if (die) |
22021 | { | |
ed2dc618 | 22022 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 22023 | = (*ref_cu)->per_cu->dwarf2_per_objfile; |
ed2dc618 | 22024 | |
796a7ff8 DE |
22025 | /* For .gdb_index version 7 keep track of included TUs. |
22026 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
22027 | if (dwarf2_per_objfile->index_table != NULL | |
22028 | && dwarf2_per_objfile->index_table->version <= 7) | |
22029 | { | |
ae640021 | 22030 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
22031 | } |
22032 | ||
348e048f | 22033 | *ref_cu = sig_cu; |
c24bdb02 KS |
22034 | if (sig_cu != cu) |
22035 | sig_cu->ancestor = cu; | |
22036 | ||
348e048f DE |
22037 | return die; |
22038 | } | |
22039 | ||
ac9ec31b DE |
22040 | return NULL; |
22041 | } | |
22042 | ||
22043 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
22044 | On entry *REF_CU is the CU of SRC_DIE. | |
22045 | On exit *REF_CU is the CU of the result. | |
22046 | The result is the DIE of the type. | |
22047 | If the referenced type cannot be found an error is thrown. */ | |
22048 | ||
22049 | static struct die_info * | |
ff39bb5e | 22050 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
22051 | struct dwarf2_cu **ref_cu) |
22052 | { | |
22053 | ULONGEST signature = DW_SIGNATURE (attr); | |
22054 | struct signatured_type *sig_type; | |
22055 | struct die_info *die; | |
22056 | ||
22057 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
22058 | ||
a2ce51a0 | 22059 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
22060 | /* sig_type will be NULL if the signatured type is missing from |
22061 | the debug info. */ | |
22062 | if (sig_type == NULL) | |
22063 | { | |
22064 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
22065 | " from DIE at %s [in module %s]"), |
22066 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 22067 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22068 | } |
22069 | ||
22070 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
22071 | if (die == NULL) | |
22072 | { | |
22073 | dump_die_for_error (src_die); | |
22074 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
22075 | " from DIE at %s [in module %s]"), |
22076 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 22077 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22078 | } |
22079 | ||
22080 | return die; | |
22081 | } | |
22082 | ||
22083 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
22084 | reading in and processing the type unit if necessary. */ | |
22085 | ||
22086 | static struct type * | |
22087 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
22088 | struct dwarf2_cu *cu) | |
22089 | { | |
518817b3 SM |
22090 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22091 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
22092 | struct signatured_type *sig_type; |
22093 | struct dwarf2_cu *type_cu; | |
22094 | struct die_info *type_die; | |
22095 | struct type *type; | |
22096 | ||
a2ce51a0 | 22097 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
22098 | /* sig_type will be NULL if the signatured type is missing from |
22099 | the debug info. */ | |
22100 | if (sig_type == NULL) | |
22101 | { | |
b98664d3 | 22102 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
22103 | " from DIE at %s [in module %s]"), |
22104 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22105 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22106 | return build_error_marker_type (cu, die); |
22107 | } | |
22108 | ||
22109 | /* If we already know the type we're done. */ | |
22110 | if (sig_type->type != NULL) | |
22111 | return sig_type->type; | |
22112 | ||
22113 | type_cu = cu; | |
22114 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
22115 | if (type_die != NULL) | |
22116 | { | |
22117 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
22118 | is created. This is important, for example, because for c++ classes | |
22119 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
22120 | type = read_type_die (type_die, type_cu); | |
22121 | if (type == NULL) | |
22122 | { | |
b98664d3 | 22123 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
22124 | " referenced from DIE at %s [in module %s]"), |
22125 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22126 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22127 | type = build_error_marker_type (cu, die); |
22128 | } | |
22129 | } | |
22130 | else | |
22131 | { | |
b98664d3 | 22132 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
22133 | " from DIE at %s [in module %s]"), |
22134 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22135 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22136 | type = build_error_marker_type (cu, die); |
22137 | } | |
22138 | sig_type->type = type; | |
22139 | ||
22140 | return type; | |
22141 | } | |
22142 | ||
22143 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
22144 | reading in and processing the type unit if necessary. */ | |
22145 | ||
22146 | static struct type * | |
ff39bb5e | 22147 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 22148 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
22149 | { |
22150 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 22151 | if (attr->form_is_ref ()) |
ac9ec31b DE |
22152 | { |
22153 | struct dwarf2_cu *type_cu = cu; | |
22154 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
22155 | ||
22156 | return read_type_die (type_die, type_cu); | |
22157 | } | |
22158 | else if (attr->form == DW_FORM_ref_sig8) | |
22159 | { | |
22160 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
22161 | } | |
22162 | else | |
22163 | { | |
518817b3 SM |
22164 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22165 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 22166 | |
b98664d3 | 22167 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
22168 | " at %s [in module %s]"), |
22169 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
4262abfb | 22170 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22171 | return build_error_marker_type (cu, die); |
22172 | } | |
348e048f DE |
22173 | } |
22174 | ||
e5fe5e75 | 22175 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
22176 | |
22177 | static void | |
e5fe5e75 | 22178 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 22179 | { |
52dc124a | 22180 | struct signatured_type *sig_type; |
348e048f | 22181 | |
f4dc4d17 | 22182 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
197400e8 | 22183 | gdb_assert (! per_cu->type_unit_group_p ()); |
f4dc4d17 | 22184 | |
6721b2ec DE |
22185 | /* We have the per_cu, but we need the signatured_type. |
22186 | Fortunately this is an easy translation. */ | |
22187 | gdb_assert (per_cu->is_debug_types); | |
22188 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 22189 | |
6721b2ec | 22190 | gdb_assert (per_cu->cu == NULL); |
348e048f | 22191 | |
52dc124a | 22192 | read_signatured_type (sig_type); |
348e048f | 22193 | |
6721b2ec | 22194 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
22195 | } |
22196 | ||
3019eac3 DE |
22197 | /* Read in a signatured type and build its CU and DIEs. |
22198 | If the type is a stub for the real type in a DWO file, | |
22199 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
22200 | |
22201 | static void | |
22202 | read_signatured_type (struct signatured_type *sig_type) | |
22203 | { | |
22204 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 22205 | |
3019eac3 | 22206 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 22207 | gdb_assert (per_cu->cu == NULL); |
348e048f | 22208 | |
6751ebae | 22209 | cutu_reader reader (per_cu, NULL, 0, false); |
c0ab21c2 TT |
22210 | |
22211 | if (!reader.dummy_p) | |
22212 | { | |
22213 | struct dwarf2_cu *cu = reader.cu; | |
22214 | const gdb_byte *info_ptr = reader.info_ptr; | |
22215 | ||
22216 | gdb_assert (cu->die_hash == NULL); | |
22217 | cu->die_hash = | |
22218 | htab_create_alloc_ex (cu->header.length / 12, | |
22219 | die_hash, | |
22220 | die_eq, | |
22221 | NULL, | |
22222 | &cu->comp_unit_obstack, | |
22223 | hashtab_obstack_allocate, | |
22224 | dummy_obstack_deallocate); | |
22225 | ||
3e225074 | 22226 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
22227 | reader.comp_unit_die->child |
22228 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
22229 | reader.comp_unit_die); | |
22230 | cu->dies = reader.comp_unit_die; | |
22231 | /* comp_unit_die is not stored in die_hash, no need. */ | |
22232 | ||
22233 | /* We try not to read any attributes in this function, because | |
22234 | not all CUs needed for references have been loaded yet, and | |
22235 | symbol table processing isn't initialized. But we have to | |
22236 | set the CU language, or we won't be able to build types | |
22237 | correctly. Similarly, if we do not read the producer, we can | |
22238 | not apply producer-specific interpretation. */ | |
22239 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
6751ebae TT |
22240 | |
22241 | reader.keep (); | |
c0ab21c2 TT |
22242 | } |
22243 | ||
7ee85ab1 | 22244 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
22245 | } |
22246 | ||
c906108c SS |
22247 | /* Decode simple location descriptions. |
22248 | Given a pointer to a dwarf block that defines a location, compute | |
22249 | the location and return the value. | |
22250 | ||
4cecd739 DJ |
22251 | NOTE drow/2003-11-18: This function is called in two situations |
22252 | now: for the address of static or global variables (partial symbols | |
22253 | only) and for offsets into structures which are expected to be | |
22254 | (more or less) constant. The partial symbol case should go away, | |
22255 | and only the constant case should remain. That will let this | |
22256 | function complain more accurately. A few special modes are allowed | |
22257 | without complaint for global variables (for instance, global | |
22258 | register values and thread-local values). | |
c906108c SS |
22259 | |
22260 | A location description containing no operations indicates that the | |
4cecd739 | 22261 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
22262 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
22263 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
22264 | complaint. |
22265 | ||
22266 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
22267 | |
22268 | static CORE_ADDR | |
e7c27a73 | 22269 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 22270 | { |
518817b3 | 22271 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
56eb65bd SP |
22272 | size_t i; |
22273 | size_t size = blk->size; | |
d521ce57 | 22274 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
22275 | CORE_ADDR stack[64]; |
22276 | int stacki; | |
22277 | unsigned int bytes_read, unsnd; | |
22278 | gdb_byte op; | |
c906108c | 22279 | |
21ae7a4d JK |
22280 | i = 0; |
22281 | stacki = 0; | |
22282 | stack[stacki] = 0; | |
22283 | stack[++stacki] = 0; | |
22284 | ||
22285 | while (i < size) | |
22286 | { | |
22287 | op = data[i++]; | |
22288 | switch (op) | |
22289 | { | |
22290 | case DW_OP_lit0: | |
22291 | case DW_OP_lit1: | |
22292 | case DW_OP_lit2: | |
22293 | case DW_OP_lit3: | |
22294 | case DW_OP_lit4: | |
22295 | case DW_OP_lit5: | |
22296 | case DW_OP_lit6: | |
22297 | case DW_OP_lit7: | |
22298 | case DW_OP_lit8: | |
22299 | case DW_OP_lit9: | |
22300 | case DW_OP_lit10: | |
22301 | case DW_OP_lit11: | |
22302 | case DW_OP_lit12: | |
22303 | case DW_OP_lit13: | |
22304 | case DW_OP_lit14: | |
22305 | case DW_OP_lit15: | |
22306 | case DW_OP_lit16: | |
22307 | case DW_OP_lit17: | |
22308 | case DW_OP_lit18: | |
22309 | case DW_OP_lit19: | |
22310 | case DW_OP_lit20: | |
22311 | case DW_OP_lit21: | |
22312 | case DW_OP_lit22: | |
22313 | case DW_OP_lit23: | |
22314 | case DW_OP_lit24: | |
22315 | case DW_OP_lit25: | |
22316 | case DW_OP_lit26: | |
22317 | case DW_OP_lit27: | |
22318 | case DW_OP_lit28: | |
22319 | case DW_OP_lit29: | |
22320 | case DW_OP_lit30: | |
22321 | case DW_OP_lit31: | |
22322 | stack[++stacki] = op - DW_OP_lit0; | |
22323 | break; | |
f1bea926 | 22324 | |
21ae7a4d JK |
22325 | case DW_OP_reg0: |
22326 | case DW_OP_reg1: | |
22327 | case DW_OP_reg2: | |
22328 | case DW_OP_reg3: | |
22329 | case DW_OP_reg4: | |
22330 | case DW_OP_reg5: | |
22331 | case DW_OP_reg6: | |
22332 | case DW_OP_reg7: | |
22333 | case DW_OP_reg8: | |
22334 | case DW_OP_reg9: | |
22335 | case DW_OP_reg10: | |
22336 | case DW_OP_reg11: | |
22337 | case DW_OP_reg12: | |
22338 | case DW_OP_reg13: | |
22339 | case DW_OP_reg14: | |
22340 | case DW_OP_reg15: | |
22341 | case DW_OP_reg16: | |
22342 | case DW_OP_reg17: | |
22343 | case DW_OP_reg18: | |
22344 | case DW_OP_reg19: | |
22345 | case DW_OP_reg20: | |
22346 | case DW_OP_reg21: | |
22347 | case DW_OP_reg22: | |
22348 | case DW_OP_reg23: | |
22349 | case DW_OP_reg24: | |
22350 | case DW_OP_reg25: | |
22351 | case DW_OP_reg26: | |
22352 | case DW_OP_reg27: | |
22353 | case DW_OP_reg28: | |
22354 | case DW_OP_reg29: | |
22355 | case DW_OP_reg30: | |
22356 | case DW_OP_reg31: | |
22357 | stack[++stacki] = op - DW_OP_reg0; | |
22358 | if (i < size) | |
22359 | dwarf2_complex_location_expr_complaint (); | |
22360 | break; | |
c906108c | 22361 | |
21ae7a4d JK |
22362 | case DW_OP_regx: |
22363 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
22364 | i += bytes_read; | |
22365 | stack[++stacki] = unsnd; | |
22366 | if (i < size) | |
22367 | dwarf2_complex_location_expr_complaint (); | |
22368 | break; | |
c906108c | 22369 | |
21ae7a4d | 22370 | case DW_OP_addr: |
c8a7a66f TT |
22371 | stack[++stacki] = cu->header.read_address (objfile->obfd, &data[i], |
22372 | &bytes_read); | |
21ae7a4d JK |
22373 | i += bytes_read; |
22374 | break; | |
d53d4ac5 | 22375 | |
21ae7a4d JK |
22376 | case DW_OP_const1u: |
22377 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
22378 | i += 1; | |
22379 | break; | |
22380 | ||
22381 | case DW_OP_const1s: | |
22382 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
22383 | i += 1; | |
22384 | break; | |
22385 | ||
22386 | case DW_OP_const2u: | |
22387 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
22388 | i += 2; | |
22389 | break; | |
22390 | ||
22391 | case DW_OP_const2s: | |
22392 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
22393 | i += 2; | |
22394 | break; | |
d53d4ac5 | 22395 | |
21ae7a4d JK |
22396 | case DW_OP_const4u: |
22397 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
22398 | i += 4; | |
22399 | break; | |
22400 | ||
22401 | case DW_OP_const4s: | |
22402 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
22403 | i += 4; | |
22404 | break; | |
22405 | ||
585861ea JK |
22406 | case DW_OP_const8u: |
22407 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
22408 | i += 8; | |
22409 | break; | |
22410 | ||
21ae7a4d JK |
22411 | case DW_OP_constu: |
22412 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
22413 | &bytes_read); | |
22414 | i += bytes_read; | |
22415 | break; | |
22416 | ||
22417 | case DW_OP_consts: | |
22418 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
22419 | i += bytes_read; | |
22420 | break; | |
22421 | ||
22422 | case DW_OP_dup: | |
22423 | stack[stacki + 1] = stack[stacki]; | |
22424 | stacki++; | |
22425 | break; | |
22426 | ||
22427 | case DW_OP_plus: | |
22428 | stack[stacki - 1] += stack[stacki]; | |
22429 | stacki--; | |
22430 | break; | |
22431 | ||
22432 | case DW_OP_plus_uconst: | |
22433 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
22434 | &bytes_read); | |
22435 | i += bytes_read; | |
22436 | break; | |
22437 | ||
22438 | case DW_OP_minus: | |
22439 | stack[stacki - 1] -= stack[stacki]; | |
22440 | stacki--; | |
22441 | break; | |
22442 | ||
22443 | case DW_OP_deref: | |
22444 | /* If we're not the last op, then we definitely can't encode | |
22445 | this using GDB's address_class enum. This is valid for partial | |
22446 | global symbols, although the variable's address will be bogus | |
22447 | in the psymtab. */ | |
22448 | if (i < size) | |
22449 | dwarf2_complex_location_expr_complaint (); | |
22450 | break; | |
22451 | ||
22452 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 22453 | case DW_OP_form_tls_address: |
21ae7a4d JK |
22454 | /* The top of the stack has the offset from the beginning |
22455 | of the thread control block at which the variable is located. */ | |
22456 | /* Nothing should follow this operator, so the top of stack would | |
22457 | be returned. */ | |
22458 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
22459 | address will be bogus in the psymtab. Make it always at least |
22460 | non-zero to not look as a variable garbage collected by linker | |
22461 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
22462 | if (i < size) |
22463 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 22464 | stack[stacki]++; |
21ae7a4d JK |
22465 | break; |
22466 | ||
22467 | case DW_OP_GNU_uninit: | |
22468 | break; | |
22469 | ||
336d760d | 22470 | case DW_OP_addrx: |
3019eac3 | 22471 | case DW_OP_GNU_addr_index: |
49f6c839 | 22472 | case DW_OP_GNU_const_index: |
3019eac3 DE |
22473 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
22474 | &bytes_read); | |
22475 | i += bytes_read; | |
22476 | break; | |
22477 | ||
21ae7a4d JK |
22478 | default: |
22479 | { | |
f39c6ffd | 22480 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
22481 | |
22482 | if (name) | |
b98664d3 | 22483 | complaint (_("unsupported stack op: '%s'"), |
21ae7a4d JK |
22484 | name); |
22485 | else | |
b98664d3 | 22486 | complaint (_("unsupported stack op: '%02x'"), |
21ae7a4d JK |
22487 | op); |
22488 | } | |
22489 | ||
22490 | return (stack[stacki]); | |
d53d4ac5 | 22491 | } |
3c6e0cb3 | 22492 | |
21ae7a4d JK |
22493 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
22494 | outside of the allocated space. Also enforce minimum>0. */ | |
22495 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
22496 | { | |
b98664d3 | 22497 | complaint (_("location description stack overflow")); |
21ae7a4d JK |
22498 | return 0; |
22499 | } | |
22500 | ||
22501 | if (stacki <= 0) | |
22502 | { | |
b98664d3 | 22503 | complaint (_("location description stack underflow")); |
21ae7a4d JK |
22504 | return 0; |
22505 | } | |
22506 | } | |
22507 | return (stack[stacki]); | |
c906108c SS |
22508 | } |
22509 | ||
22510 | /* memory allocation interface */ | |
22511 | ||
c906108c | 22512 | static struct dwarf_block * |
7b5a2f43 | 22513 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 22514 | { |
8d749320 | 22515 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
22516 | } |
22517 | ||
c906108c | 22518 | static struct die_info * |
b60c80d6 | 22519 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
22520 | { |
22521 | struct die_info *die; | |
b60c80d6 DJ |
22522 | size_t size = sizeof (struct die_info); |
22523 | ||
22524 | if (num_attrs > 1) | |
22525 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 22526 | |
b60c80d6 | 22527 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
22528 | memset (die, 0, sizeof (struct die_info)); |
22529 | return (die); | |
22530 | } | |
2e276125 JB |
22531 | |
22532 | \f | |
a036ba48 | 22533 | |
c90ec28a | 22534 | /* Macro support. */ |
cf2c3c16 | 22535 | |
9eac9650 TT |
22536 | /* An overload of dwarf_decode_macros that finds the correct section |
22537 | and ensures it is read in before calling the other overload. */ | |
22538 | ||
22539 | static void | |
22540 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, | |
22541 | int section_is_gnu) | |
22542 | { | |
22543 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
22544 | = cu->per_cu->dwarf2_per_objfile; | |
22545 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5a0e026f | 22546 | const struct line_header *lh = cu->line_header; |
9eac9650 TT |
22547 | unsigned int offset_size = cu->header.offset_size; |
22548 | struct dwarf2_section_info *section; | |
22549 | const char *section_name; | |
22550 | ||
22551 | if (cu->dwo_unit != nullptr) | |
22552 | { | |
22553 | if (section_is_gnu) | |
22554 | { | |
22555 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
22556 | section_name = ".debug_macro.dwo"; | |
22557 | } | |
22558 | else | |
22559 | { | |
22560 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
22561 | section_name = ".debug_macinfo.dwo"; | |
22562 | } | |
22563 | } | |
22564 | else | |
22565 | { | |
22566 | if (section_is_gnu) | |
22567 | { | |
22568 | section = &dwarf2_per_objfile->macro; | |
22569 | section_name = ".debug_macro"; | |
22570 | } | |
22571 | else | |
22572 | { | |
22573 | section = &dwarf2_per_objfile->macinfo; | |
22574 | section_name = ".debug_macinfo"; | |
22575 | } | |
22576 | } | |
22577 | ||
22578 | section->read (objfile); | |
22579 | if (section->buffer == nullptr) | |
22580 | { | |
22581 | complaint (_("missing %s section"), section_name); | |
22582 | return; | |
22583 | } | |
22584 | ||
22585 | buildsym_compunit *builder = cu->get_builder (); | |
22586 | ||
22587 | dwarf_decode_macros (dwarf2_per_objfile, builder, section, lh, | |
22588 | offset_size, offset, section_is_gnu); | |
22589 | } | |
22590 | ||
3019eac3 DE |
22591 | /* Return the .debug_loc section to use for CU. |
22592 | For DWO files use .debug_loc.dwo. */ | |
22593 | ||
22594 | static struct dwarf2_section_info * | |
22595 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
22596 | { | |
518817b3 SM |
22597 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22598 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 22599 | |
3019eac3 | 22600 | if (cu->dwo_unit) |
43988095 JK |
22601 | { |
22602 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 22603 | |
43988095 JK |
22604 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
22605 | } | |
22606 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->loclists | |
22607 | : &dwarf2_per_objfile->loc); | |
3019eac3 DE |
22608 | } |
22609 | ||
8cf6f0b1 TT |
22610 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
22611 | ||
22612 | static void | |
22613 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
22614 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 22615 | const struct attribute *attr) |
8cf6f0b1 | 22616 | { |
518817b3 SM |
22617 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22618 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 DE |
22619 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
22620 | ||
96b79293 | 22621 | section->read (dwarf2_per_objfile->objfile); |
8cf6f0b1 TT |
22622 | |
22623 | baton->per_cu = cu->per_cu; | |
22624 | gdb_assert (baton->per_cu); | |
22625 | /* We don't know how long the location list is, but make sure we | |
22626 | don't run off the edge of the section. */ | |
3019eac3 DE |
22627 | baton->size = section->size - DW_UNSND (attr); |
22628 | baton->data = section->buffer + DW_UNSND (attr); | |
2b24b6e4 TT |
22629 | if (cu->base_address.has_value ()) |
22630 | baton->base_address = *cu->base_address; | |
22631 | else | |
22632 | baton->base_address = 0; | |
f664829e | 22633 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
22634 | } |
22635 | ||
4c2df51b | 22636 | static void |
ff39bb5e | 22637 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 22638 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 22639 | { |
518817b3 SM |
22640 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22641 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 22642 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 22643 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 22644 | |
cd6c91b4 | 22645 | if (attr->form_is_section_offset () |
3019eac3 | 22646 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
22647 | the section. If so, fall through to the complaint in the |
22648 | other branch. */ | |
2c7d5afc | 22649 | && DW_UNSND (attr) < section->get_size (objfile)) |
4c2df51b | 22650 | { |
0d53c4c4 | 22651 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 22652 | |
8d749320 | 22653 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 22654 | |
8cf6f0b1 | 22655 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 22656 | |
2b24b6e4 | 22657 | if (!cu->base_address.has_value ()) |
b98664d3 | 22658 | complaint (_("Location list used without " |
3e43a32a | 22659 | "specifying the CU base address.")); |
4c2df51b | 22660 | |
f1e6e072 TT |
22661 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
22662 | ? dwarf2_loclist_block_index | |
22663 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
22664 | SYMBOL_LOCATION_BATON (sym) = baton; |
22665 | } | |
22666 | else | |
22667 | { | |
22668 | struct dwarf2_locexpr_baton *baton; | |
22669 | ||
8d749320 | 22670 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
ae0d2f24 UW |
22671 | baton->per_cu = cu->per_cu; |
22672 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 22673 | |
4fc6c0d5 | 22674 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
22675 | { |
22676 | /* Note that we're just copying the block's data pointer | |
22677 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
22678 | info_buffer for SYM's objfile; right now we never release |
22679 | that buffer, but when we do clean up properly this may | |
22680 | need to change. */ | |
0d53c4c4 DJ |
22681 | baton->size = DW_BLOCK (attr)->size; |
22682 | baton->data = DW_BLOCK (attr)->data; | |
22683 | } | |
22684 | else | |
22685 | { | |
22686 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 22687 | sym->natural_name ()); |
0d53c4c4 | 22688 | baton->size = 0; |
0d53c4c4 | 22689 | } |
6e70227d | 22690 | |
f1e6e072 TT |
22691 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
22692 | ? dwarf2_locexpr_block_index | |
22693 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
22694 | SYMBOL_LOCATION_BATON (sym) = baton; |
22695 | } | |
4c2df51b | 22696 | } |
6502dd73 | 22697 | |
09ba997f | 22698 | /* See read.h. */ |
ae0d2f24 UW |
22699 | |
22700 | struct objfile * | |
09ba997f | 22701 | dwarf2_per_cu_data::objfile () const |
ae0d2f24 | 22702 | { |
09ba997f | 22703 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
ae0d2f24 UW |
22704 | |
22705 | /* Return the master objfile, so that we can report and look up the | |
22706 | correct file containing this variable. */ | |
22707 | if (objfile->separate_debug_objfile_backlink) | |
22708 | objfile = objfile->separate_debug_objfile_backlink; | |
22709 | ||
22710 | return objfile; | |
22711 | } | |
22712 | ||
96408a79 SA |
22713 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
22714 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
22715 | CU_HEADERP first. */ | |
22716 | ||
22717 | static const struct comp_unit_head * | |
22718 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
09ba997f | 22719 | const struct dwarf2_per_cu_data *per_cu) |
96408a79 | 22720 | { |
d521ce57 | 22721 | const gdb_byte *info_ptr; |
96408a79 SA |
22722 | |
22723 | if (per_cu->cu) | |
22724 | return &per_cu->cu->header; | |
22725 | ||
9c541725 | 22726 | info_ptr = per_cu->section->buffer + to_underlying (per_cu->sect_off); |
96408a79 SA |
22727 | |
22728 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
22729 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
22730 | rcuh_kind::COMPILE); | |
96408a79 SA |
22731 | |
22732 | return cu_headerp; | |
22733 | } | |
22734 | ||
09ba997f | 22735 | /* See read.h. */ |
ae0d2f24 | 22736 | |
98714339 | 22737 | int |
09ba997f | 22738 | dwarf2_per_cu_data::addr_size () const |
ae0d2f24 | 22739 | { |
96408a79 SA |
22740 | struct comp_unit_head cu_header_local; |
22741 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 22742 | |
09ba997f | 22743 | cu_headerp = per_cu_header_read_in (&cu_header_local, this); |
96408a79 SA |
22744 | |
22745 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
22746 | } |
22747 | ||
09ba997f | 22748 | /* See read.h. */ |
9eae7c52 TT |
22749 | |
22750 | int | |
09ba997f | 22751 | dwarf2_per_cu_data::offset_size () const |
9eae7c52 | 22752 | { |
96408a79 SA |
22753 | struct comp_unit_head cu_header_local; |
22754 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 22755 | |
09ba997f | 22756 | cu_headerp = per_cu_header_read_in (&cu_header_local, this); |
96408a79 SA |
22757 | |
22758 | return cu_headerp->offset_size; | |
22759 | } | |
22760 | ||
09ba997f | 22761 | /* See read.h. */ |
96408a79 SA |
22762 | |
22763 | int | |
09ba997f | 22764 | dwarf2_per_cu_data::ref_addr_size () const |
96408a79 SA |
22765 | { |
22766 | struct comp_unit_head cu_header_local; | |
22767 | const struct comp_unit_head *cu_headerp; | |
22768 | ||
09ba997f | 22769 | cu_headerp = per_cu_header_read_in (&cu_header_local, this); |
96408a79 SA |
22770 | |
22771 | if (cu_headerp->version == 2) | |
22772 | return cu_headerp->addr_size; | |
22773 | else | |
22774 | return cu_headerp->offset_size; | |
181cebd4 JK |
22775 | } |
22776 | ||
09ba997f | 22777 | /* See read.h. */ |
9aa1f1e3 TT |
22778 | |
22779 | CORE_ADDR | |
09ba997f | 22780 | dwarf2_per_cu_data::text_offset () const |
9aa1f1e3 | 22781 | { |
09ba997f TT |
22782 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
22783 | ||
22784 | return objfile->text_section_offset (); | |
9aa1f1e3 TT |
22785 | } |
22786 | ||
09ba997f TT |
22787 | /* See read.h. */ |
22788 | ||
22789 | struct type * | |
22790 | dwarf2_per_cu_data::addr_type () const | |
9a49df9d | 22791 | { |
09ba997f | 22792 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
9a49df9d AB |
22793 | struct type *void_type = objfile_type (objfile)->builtin_void; |
22794 | struct type *addr_type = lookup_pointer_type (void_type); | |
09ba997f | 22795 | int addr_size = this->addr_size (); |
9a49df9d AB |
22796 | |
22797 | if (TYPE_LENGTH (addr_type) == addr_size) | |
22798 | return addr_type; | |
22799 | ||
09ba997f | 22800 | addr_type = addr_sized_int_type (TYPE_UNSIGNED (addr_type)); |
9a49df9d AB |
22801 | return addr_type; |
22802 | } | |
22803 | ||
22b6cd70 TT |
22804 | /* A helper function for dwarf2_find_containing_comp_unit that returns |
22805 | the index of the result, and that searches a vector. It will | |
22806 | return a result even if the offset in question does not actually | |
22807 | occur in any CU. This is separate so that it can be unit | |
22808 | tested. */ | |
ae038cb0 | 22809 | |
22b6cd70 TT |
22810 | static int |
22811 | dwarf2_find_containing_comp_unit | |
22812 | (sect_offset sect_off, | |
22813 | unsigned int offset_in_dwz, | |
22814 | const std::vector<dwarf2_per_cu_data *> &all_comp_units) | |
ae038cb0 | 22815 | { |
ae038cb0 DJ |
22816 | int low, high; |
22817 | ||
ae038cb0 | 22818 | low = 0; |
22b6cd70 | 22819 | high = all_comp_units.size () - 1; |
ae038cb0 DJ |
22820 | while (high > low) |
22821 | { | |
36586728 | 22822 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 22823 | int mid = low + (high - low) / 2; |
9a619af0 | 22824 | |
22b6cd70 | 22825 | mid_cu = all_comp_units[mid]; |
36586728 | 22826 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 22827 | || (mid_cu->is_dwz == offset_in_dwz |
22b6cd70 | 22828 | && mid_cu->sect_off + mid_cu->length > sect_off)) |
ae038cb0 DJ |
22829 | high = mid; |
22830 | else | |
22831 | low = mid + 1; | |
22832 | } | |
22833 | gdb_assert (low == high); | |
22b6cd70 TT |
22834 | return low; |
22835 | } | |
22836 | ||
22837 | /* Locate the .debug_info compilation unit from CU's objfile which contains | |
22838 | the DIE at OFFSET. Raises an error on failure. */ | |
22839 | ||
22840 | static struct dwarf2_per_cu_data * | |
22841 | dwarf2_find_containing_comp_unit (sect_offset sect_off, | |
22842 | unsigned int offset_in_dwz, | |
22843 | struct dwarf2_per_objfile *dwarf2_per_objfile) | |
22844 | { | |
22845 | int low | |
22846 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
22847 | dwarf2_per_objfile->all_comp_units); | |
22848 | struct dwarf2_per_cu_data *this_cu | |
22849 | = dwarf2_per_objfile->all_comp_units[low]; | |
22850 | ||
45b8ae0c | 22851 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 22852 | { |
36586728 | 22853 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 22854 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
22855 | "offset %s [in module %s]"), |
22856 | sect_offset_str (sect_off), | |
ed2dc618 | 22857 | bfd_get_filename (dwarf2_per_objfile->objfile->obfd)); |
10b3939b | 22858 | |
9c541725 PA |
22859 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->sect_off |
22860 | <= sect_off); | |
ae038cb0 DJ |
22861 | return dwarf2_per_objfile->all_comp_units[low-1]; |
22862 | } | |
22863 | else | |
22864 | { | |
b76e467d | 22865 | if (low == dwarf2_per_objfile->all_comp_units.size () - 1 |
9c541725 | 22866 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 22867 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 22868 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
22869 | return this_cu; |
22870 | } | |
22871 | } | |
22872 | ||
22b6cd70 TT |
22873 | #if GDB_SELF_TEST |
22874 | ||
22875 | namespace selftests { | |
22876 | namespace find_containing_comp_unit { | |
22877 | ||
22878 | static void | |
22879 | run_test () | |
22880 | { | |
22881 | struct dwarf2_per_cu_data one {}; | |
22882 | struct dwarf2_per_cu_data two {}; | |
22883 | struct dwarf2_per_cu_data three {}; | |
22884 | struct dwarf2_per_cu_data four {}; | |
22885 | ||
22886 | one.length = 5; | |
22887 | two.sect_off = sect_offset (one.length); | |
22888 | two.length = 7; | |
22889 | ||
22890 | three.length = 5; | |
22891 | three.is_dwz = 1; | |
22892 | four.sect_off = sect_offset (three.length); | |
22893 | four.length = 7; | |
22894 | four.is_dwz = 1; | |
22895 | ||
22896 | std::vector<dwarf2_per_cu_data *> units; | |
22897 | units.push_back (&one); | |
22898 | units.push_back (&two); | |
22899 | units.push_back (&three); | |
22900 | units.push_back (&four); | |
22901 | ||
22902 | int result; | |
22903 | ||
22904 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 0, units); | |
22905 | SELF_CHECK (units[result] == &one); | |
22906 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 0, units); | |
22907 | SELF_CHECK (units[result] == &one); | |
22908 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 0, units); | |
22909 | SELF_CHECK (units[result] == &two); | |
22910 | ||
22911 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 1, units); | |
22912 | SELF_CHECK (units[result] == &three); | |
22913 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 1, units); | |
22914 | SELF_CHECK (units[result] == &three); | |
22915 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 1, units); | |
22916 | SELF_CHECK (units[result] == &four); | |
22917 | } | |
22918 | ||
22919 | } | |
22920 | } | |
22921 | ||
22922 | #endif /* GDB_SELF_TEST */ | |
22923 | ||
23745b47 | 22924 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 22925 | |
fcd3b13d SM |
22926 | dwarf2_cu::dwarf2_cu (struct dwarf2_per_cu_data *per_cu_) |
22927 | : per_cu (per_cu_), | |
9068261f AB |
22928 | mark (false), |
22929 | has_loclist (false), | |
22930 | checked_producer (false), | |
22931 | producer_is_gxx_lt_4_6 (false), | |
22932 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 22933 | producer_is_icc (false), |
9068261f | 22934 | producer_is_icc_lt_14 (false), |
c258c396 | 22935 | producer_is_codewarrior (false), |
9068261f | 22936 | processing_has_namespace_info (false) |
93311388 | 22937 | { |
fcd3b13d SM |
22938 | per_cu->cu = this; |
22939 | } | |
22940 | ||
22941 | /* Destroy a dwarf2_cu. */ | |
22942 | ||
22943 | dwarf2_cu::~dwarf2_cu () | |
22944 | { | |
22945 | per_cu->cu = NULL; | |
9816fde3 JK |
22946 | } |
22947 | ||
22948 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
22949 | ||
22950 | static void | |
95554aad TT |
22951 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
22952 | enum language pretend_language) | |
9816fde3 JK |
22953 | { |
22954 | struct attribute *attr; | |
22955 | ||
22956 | /* Set the language we're debugging. */ | |
22957 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 22958 | if (attr != nullptr) |
9816fde3 JK |
22959 | set_cu_language (DW_UNSND (attr), cu); |
22960 | else | |
9cded63f | 22961 | { |
95554aad | 22962 | cu->language = pretend_language; |
9cded63f TT |
22963 | cu->language_defn = language_def (cu->language); |
22964 | } | |
dee91e82 | 22965 | |
7d45c7c3 | 22966 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
22967 | } |
22968 | ||
ae038cb0 DJ |
22969 | /* Increase the age counter on each cached compilation unit, and free |
22970 | any that are too old. */ | |
22971 | ||
22972 | static void | |
ed2dc618 | 22973 | age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
22974 | { |
22975 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
22976 | ||
22977 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
22978 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22979 | while (per_cu != NULL) | |
22980 | { | |
22981 | per_cu->cu->last_used ++; | |
b4f54984 | 22982 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
22983 | dwarf2_mark (per_cu->cu); |
22984 | per_cu = per_cu->cu->read_in_chain; | |
22985 | } | |
22986 | ||
22987 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22988 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
22989 | while (per_cu != NULL) | |
22990 | { | |
22991 | struct dwarf2_per_cu_data *next_cu; | |
22992 | ||
22993 | next_cu = per_cu->cu->read_in_chain; | |
22994 | ||
22995 | if (!per_cu->cu->mark) | |
22996 | { | |
fcd3b13d | 22997 | delete per_cu->cu; |
ae038cb0 DJ |
22998 | *last_chain = next_cu; |
22999 | } | |
23000 | else | |
23001 | last_chain = &per_cu->cu->read_in_chain; | |
23002 | ||
23003 | per_cu = next_cu; | |
23004 | } | |
23005 | } | |
23006 | ||
23007 | /* Remove a single compilation unit from the cache. */ | |
23008 | ||
23009 | static void | |
dee91e82 | 23010 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
23011 | { |
23012 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
ed2dc618 SM |
23013 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23014 | = target_per_cu->dwarf2_per_objfile; | |
ae038cb0 DJ |
23015 | |
23016 | per_cu = dwarf2_per_objfile->read_in_chain; | |
23017 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
23018 | while (per_cu != NULL) | |
23019 | { | |
23020 | struct dwarf2_per_cu_data *next_cu; | |
23021 | ||
23022 | next_cu = per_cu->cu->read_in_chain; | |
23023 | ||
dee91e82 | 23024 | if (per_cu == target_per_cu) |
ae038cb0 | 23025 | { |
fcd3b13d | 23026 | delete per_cu->cu; |
dee91e82 | 23027 | per_cu->cu = NULL; |
ae038cb0 DJ |
23028 | *last_chain = next_cu; |
23029 | break; | |
23030 | } | |
23031 | else | |
23032 | last_chain = &per_cu->cu->read_in_chain; | |
23033 | ||
23034 | per_cu = next_cu; | |
23035 | } | |
23036 | } | |
23037 | ||
dee91e82 DE |
23038 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
23039 | We store these in a hash table separate from the DIEs, and preserve them | |
23040 | when the DIEs are flushed out of cache. | |
23041 | ||
23042 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 23043 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
23044 | or the type may come from a DWO file. Furthermore, while it's more logical |
23045 | to use per_cu->section+offset, with Fission the section with the data is in | |
23046 | the DWO file but we don't know that section at the point we need it. | |
23047 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
23048 | because we can enter the lookup routine, get_die_type_at_offset, from | |
23049 | outside this file, and thus won't necessarily have PER_CU->cu. | |
23050 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 23051 | |
dee91e82 | 23052 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 23053 | { |
dee91e82 | 23054 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 23055 | sect_offset sect_off; |
1c379e20 DJ |
23056 | struct type *type; |
23057 | }; | |
23058 | ||
dee91e82 | 23059 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
23060 | |
23061 | static hashval_t | |
dee91e82 | 23062 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 23063 | { |
9a3c8263 SM |
23064 | const struct dwarf2_per_cu_offset_and_type *ofs |
23065 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 23066 | |
9c541725 | 23067 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
23068 | } |
23069 | ||
dee91e82 | 23070 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
23071 | |
23072 | static int | |
dee91e82 | 23073 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 23074 | { |
9a3c8263 SM |
23075 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
23076 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
23077 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
23078 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 23079 | |
dee91e82 | 23080 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 23081 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
23082 | } |
23083 | ||
23084 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
23085 | table if necessary. For convenience, return TYPE. |
23086 | ||
23087 | The DIEs reading must have careful ordering to: | |
85102364 | 23088 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
23089 | reading current DIE. |
23090 | * Not trying to dereference contents of still incompletely read in types | |
23091 | while reading in other DIEs. | |
23092 | * Enable referencing still incompletely read in types just by a pointer to | |
23093 | the type without accessing its fields. | |
23094 | ||
23095 | Therefore caller should follow these rules: | |
23096 | * Try to fetch any prerequisite types we may need to build this DIE type | |
23097 | before building the type and calling set_die_type. | |
e71ec853 | 23098 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
23099 | possible before fetching more types to complete the current type. |
23100 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 23101 | |
f792889a | 23102 | static struct type * |
1c379e20 DJ |
23103 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
23104 | { | |
518817b3 SM |
23105 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23106 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 23107 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
ed2dc618 | 23108 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3cdcd0ce JB |
23109 | struct attribute *attr; |
23110 | struct dynamic_prop prop; | |
1c379e20 | 23111 | |
b4ba55a1 JB |
23112 | /* For Ada types, make sure that the gnat-specific data is always |
23113 | initialized (if not already set). There are a few types where | |
23114 | we should not be doing so, because the type-specific area is | |
23115 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
23116 | where the type-specific area is used to store the floatformat). | |
23117 | But this is not a problem, because the gnat-specific information | |
23118 | is actually not needed for these types. */ | |
23119 | if (need_gnat_info (cu) | |
23120 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
23121 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
23122 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
23123 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
23124 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
23125 | && !HAVE_GNAT_AUX_INFO (type)) |
23126 | INIT_GNAT_SPECIFIC (type); | |
23127 | ||
3f2f83dd KB |
23128 | /* Read DW_AT_allocated and set in type. */ |
23129 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
4fc6c0d5 | 23130 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 23131 | { |
09ba997f | 23132 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
9a49df9d | 23133 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
50a82047 | 23134 | add_dyn_prop (DYN_PROP_ALLOCATED, prop, type); |
3f2f83dd KB |
23135 | } |
23136 | else if (attr != NULL) | |
23137 | { | |
b98664d3 | 23138 | complaint (_("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 23139 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 23140 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
23141 | } |
23142 | ||
23143 | /* Read DW_AT_associated and set in type. */ | |
23144 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
4fc6c0d5 | 23145 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 23146 | { |
09ba997f | 23147 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
9a49df9d | 23148 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
50a82047 | 23149 | add_dyn_prop (DYN_PROP_ASSOCIATED, prop, type); |
3f2f83dd KB |
23150 | } |
23151 | else if (attr != NULL) | |
23152 | { | |
b98664d3 | 23153 | complaint (_("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 23154 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 23155 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
23156 | } |
23157 | ||
3cdcd0ce JB |
23158 | /* Read DW_AT_data_location and set in type. */ |
23159 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
9a49df9d | 23160 | if (attr_to_dynamic_prop (attr, die, cu, &prop, |
09ba997f | 23161 | cu->per_cu->addr_type ())) |
50a82047 | 23162 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type); |
3cdcd0ce | 23163 | |
dee91e82 | 23164 | if (dwarf2_per_objfile->die_type_hash == NULL) |
0335378b TT |
23165 | dwarf2_per_objfile->die_type_hash |
23166 | = htab_up (htab_create_alloc (127, | |
23167 | per_cu_offset_and_type_hash, | |
23168 | per_cu_offset_and_type_eq, | |
23169 | NULL, xcalloc, xfree)); | |
1c379e20 | 23170 | |
dee91e82 | 23171 | ofs.per_cu = cu->per_cu; |
9c541725 | 23172 | ofs.sect_off = die->sect_off; |
1c379e20 | 23173 | ofs.type = type; |
dee91e82 | 23174 | slot = (struct dwarf2_per_cu_offset_and_type **) |
0335378b | 23175 | htab_find_slot (dwarf2_per_objfile->die_type_hash.get (), &ofs, INSERT); |
7e314c57 | 23176 | if (*slot) |
b98664d3 | 23177 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 23178 | sect_offset_str (die->sect_off)); |
8d749320 SM |
23179 | *slot = XOBNEW (&objfile->objfile_obstack, |
23180 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 23181 | **slot = ofs; |
f792889a | 23182 | return type; |
1c379e20 DJ |
23183 | } |
23184 | ||
9c541725 | 23185 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 23186 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
23187 | |
23188 | static struct type * | |
9c541725 | 23189 | get_die_type_at_offset (sect_offset sect_off, |
673bfd45 | 23190 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 23191 | { |
dee91e82 | 23192 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
ed2dc618 | 23193 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
f792889a | 23194 | |
dee91e82 | 23195 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 23196 | return NULL; |
1c379e20 | 23197 | |
dee91e82 | 23198 | ofs.per_cu = per_cu; |
9c541725 | 23199 | ofs.sect_off = sect_off; |
9a3c8263 | 23200 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
0335378b | 23201 | htab_find (dwarf2_per_objfile->die_type_hash.get (), &ofs)); |
1c379e20 DJ |
23202 | if (slot) |
23203 | return slot->type; | |
23204 | else | |
23205 | return NULL; | |
23206 | } | |
23207 | ||
02142a6c | 23208 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
23209 | or return NULL if DIE does not have a saved type. */ |
23210 | ||
23211 | static struct type * | |
23212 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
23213 | { | |
9c541725 | 23214 | return get_die_type_at_offset (die->sect_off, cu->per_cu); |
673bfd45 DE |
23215 | } |
23216 | ||
10b3939b DJ |
23217 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
23218 | ||
23219 | static void | |
23220 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
23221 | struct dwarf2_per_cu_data *ref_per_cu) | |
23222 | { | |
23223 | void **slot; | |
23224 | ||
23225 | if (cu->dependencies == NULL) | |
23226 | cu->dependencies | |
23227 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
23228 | NULL, &cu->comp_unit_obstack, | |
23229 | hashtab_obstack_allocate, | |
23230 | dummy_obstack_deallocate); | |
23231 | ||
23232 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
23233 | if (*slot == NULL) | |
23234 | *slot = ref_per_cu; | |
23235 | } | |
1c379e20 | 23236 | |
f504f079 DE |
23237 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
23238 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
23239 | cache that we must keep because we are keeping CU. */ |
23240 | ||
10b3939b DJ |
23241 | static int |
23242 | dwarf2_mark_helper (void **slot, void *data) | |
23243 | { | |
23244 | struct dwarf2_per_cu_data *per_cu; | |
23245 | ||
23246 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
23247 | |
23248 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
23249 | reading of the chain. As such dependencies remain valid it is not much | |
23250 | useful to track and undo them during QUIT cleanups. */ | |
23251 | if (per_cu->cu == NULL) | |
23252 | return 1; | |
23253 | ||
10b3939b DJ |
23254 | if (per_cu->cu->mark) |
23255 | return 1; | |
9068261f | 23256 | per_cu->cu->mark = true; |
10b3939b DJ |
23257 | |
23258 | if (per_cu->cu->dependencies != NULL) | |
23259 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
23260 | ||
23261 | return 1; | |
23262 | } | |
23263 | ||
f504f079 DE |
23264 | /* Set the mark field in CU and in every other compilation unit in the |
23265 | cache that we must keep because we are keeping CU. */ | |
23266 | ||
ae038cb0 DJ |
23267 | static void |
23268 | dwarf2_mark (struct dwarf2_cu *cu) | |
23269 | { | |
23270 | if (cu->mark) | |
23271 | return; | |
9068261f | 23272 | cu->mark = true; |
10b3939b DJ |
23273 | if (cu->dependencies != NULL) |
23274 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
23275 | } |
23276 | ||
23277 | static void | |
23278 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
23279 | { | |
23280 | while (per_cu) | |
23281 | { | |
9068261f | 23282 | per_cu->cu->mark = false; |
ae038cb0 DJ |
23283 | per_cu = per_cu->cu->read_in_chain; |
23284 | } | |
72bf9492 DJ |
23285 | } |
23286 | ||
72bf9492 DJ |
23287 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
23288 | is its offset in .debug_info for this objfile. */ | |
23289 | ||
23290 | static hashval_t | |
23291 | partial_die_hash (const void *item) | |
23292 | { | |
9a3c8263 SM |
23293 | const struct partial_die_info *part_die |
23294 | = (const struct partial_die_info *) item; | |
9a619af0 | 23295 | |
9c541725 | 23296 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
23297 | } |
23298 | ||
23299 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
23300 | are equal if they have the same offset. */ | |
23301 | ||
23302 | static int | |
23303 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
23304 | { | |
9a3c8263 SM |
23305 | const struct partial_die_info *part_die_lhs |
23306 | = (const struct partial_die_info *) item_lhs; | |
23307 | const struct partial_die_info *part_die_rhs | |
23308 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 23309 | |
9c541725 | 23310 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
23311 | } |
23312 | ||
3c3bb058 AB |
23313 | struct cmd_list_element *set_dwarf_cmdlist; |
23314 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
23315 | |
23316 | static void | |
981a3fb3 | 23317 | set_dwarf_cmd (const char *args, int from_tty) |
ae038cb0 | 23318 | { |
b4f54984 | 23319 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 23320 | gdb_stdout); |
ae038cb0 DJ |
23321 | } |
23322 | ||
23323 | static void | |
981a3fb3 | 23324 | show_dwarf_cmd (const char *args, int from_tty) |
6e70227d | 23325 | { |
b4f54984 | 23326 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
23327 | } |
23328 | ||
9291a0cd | 23329 | static void |
cd4fb1b2 SM |
23330 | show_check_physname (struct ui_file *file, int from_tty, |
23331 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 23332 | { |
cd4fb1b2 SM |
23333 | fprintf_filtered (file, |
23334 | _("Whether to check \"physname\" is %s.\n"), | |
23335 | value); | |
9291a0cd TT |
23336 | } |
23337 | ||
6c265988 | 23338 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 23339 | void |
6c265988 | 23340 | _initialize_dwarf2_read () |
9291a0cd | 23341 | { |
cd4fb1b2 SM |
23342 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
23343 | Set DWARF specific variables.\n\ | |
590042fc | 23344 | Configure DWARF variables such as the cache size."), |
cd4fb1b2 SM |
23345 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
23346 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 23347 | |
cd4fb1b2 | 23348 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
590042fc PW |
23349 | Show DWARF specific variables.\n\ |
23350 | Show DWARF variables such as the cache size."), | |
cd4fb1b2 SM |
23351 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
23352 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 23353 | |
cd4fb1b2 SM |
23354 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
23355 | &dwarf_max_cache_age, _("\ | |
23356 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
23357 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
23358 | A higher limit means that cached compilation units will be stored\n\ | |
23359 | in memory longer, and more total memory will be used. Zero disables\n\ | |
23360 | caching, which can slow down startup."), | |
23361 | NULL, | |
23362 | show_dwarf_max_cache_age, | |
23363 | &set_dwarf_cmdlist, | |
23364 | &show_dwarf_cmdlist); | |
156942c7 | 23365 | |
cd4fb1b2 SM |
23366 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
23367 | Set debugging of the DWARF reader."), _("\ | |
23368 | Show debugging of the DWARF reader."), _("\ | |
23369 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
23370 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
23371 | information. A value greater than 1 provides more verbose information."), | |
23372 | NULL, | |
23373 | NULL, | |
23374 | &setdebuglist, &showdebuglist); | |
9291a0cd | 23375 | |
cd4fb1b2 SM |
23376 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
23377 | Set debugging of the DWARF DIE reader."), _("\ | |
23378 | Show debugging of the DWARF DIE reader."), _("\ | |
23379 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
23380 | The value is the maximum depth to print."), | |
23381 | NULL, | |
23382 | NULL, | |
23383 | &setdebuglist, &showdebuglist); | |
9291a0cd | 23384 | |
cd4fb1b2 SM |
23385 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
23386 | Set debugging of the dwarf line reader."), _("\ | |
23387 | Show debugging of the dwarf line reader."), _("\ | |
23388 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
23389 | A value of 1 (one) provides basic information.\n\ | |
23390 | A value greater than 1 provides more verbose information."), | |
23391 | NULL, | |
23392 | NULL, | |
23393 | &setdebuglist, &showdebuglist); | |
437afbb8 | 23394 | |
cd4fb1b2 SM |
23395 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
23396 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
23397 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
23398 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
23399 | the demangler."), | |
23400 | NULL, show_check_physname, | |
23401 | &setdebuglist, &showdebuglist); | |
900e11f9 | 23402 | |
e615022a DE |
23403 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
23404 | no_class, &use_deprecated_index_sections, _("\ | |
23405 | Set whether to use deprecated gdb_index sections."), _("\ | |
23406 | Show whether to use deprecated gdb_index sections."), _("\ | |
23407 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
23408 | Normally they are ignored either because of a missing feature or\n\ | |
23409 | performance issue.\n\ | |
23410 | Warning: This option must be enabled before gdb reads the file."), | |
23411 | NULL, | |
23412 | NULL, | |
23413 | &setlist, &showlist); | |
23414 | ||
f1e6e072 TT |
23415 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
23416 | &dwarf2_locexpr_funcs); | |
23417 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
23418 | &dwarf2_loclist_funcs); | |
23419 | ||
23420 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
23421 | &dwarf2_block_frame_base_locexpr_funcs); | |
23422 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
23423 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
23424 | |
23425 | #if GDB_SELF_TEST | |
23426 | selftests::register_test ("dw2_expand_symtabs_matching", | |
23427 | selftests::dw2_expand_symtabs_matching::run_test); | |
22b6cd70 TT |
23428 | selftests::register_test ("dwarf2_find_containing_comp_unit", |
23429 | selftests::find_containing_comp_unit::run_test); | |
c62446b1 | 23430 | #endif |
6502dd73 | 23431 | } |