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 | { |
40658b94 | 3595 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
3596 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
3597 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
3598 | } |
3599 | ||
e1ef7d7a PA |
3600 | /* Starting from a search name, return the string that finds the upper |
3601 | bound of all strings that start with SEARCH_NAME in a sorted name | |
3602 | list. Returns the empty string to indicate that the upper bound is | |
3603 | the end of the list. */ | |
3604 | ||
3605 | static std::string | |
3606 | make_sort_after_prefix_name (const char *search_name) | |
3607 | { | |
3608 | /* When looking to complete "func", we find the upper bound of all | |
3609 | symbols that start with "func" by looking for where we'd insert | |
3610 | the closest string that would follow "func" in lexicographical | |
3611 | order. Usually, that's "func"-with-last-character-incremented, | |
3612 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
3613 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
3614 | Especially mind the 0xff character, which is a valid character in | |
3615 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
3616 | rule out compilers allowing it in identifiers. Note that | |
3617 | conveniently, strcmp/strcasecmp are specified to compare | |
3618 | characters interpreted as unsigned char. So what we do is treat | |
3619 | the whole string as a base 256 number composed of a sequence of | |
3620 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
3621 | to 0, and carries 1 to the following more-significant position. | |
3622 | If the very first character in SEARCH_NAME ends up incremented | |
3623 | and carries/overflows, then the upper bound is the end of the | |
3624 | list. The string after the empty string is also the empty | |
3625 | string. | |
3626 | ||
3627 | Some examples of this operation: | |
3628 | ||
3629 | SEARCH_NAME => "+1" RESULT | |
3630 | ||
3631 | "abc" => "abd" | |
3632 | "ab\xff" => "ac" | |
3633 | "\xff" "a" "\xff" => "\xff" "b" | |
3634 | "\xff" => "" | |
3635 | "\xff\xff" => "" | |
3636 | "" => "" | |
3637 | ||
3638 | Then, with these symbols for example: | |
3639 | ||
3640 | func | |
3641 | func1 | |
3642 | fund | |
3643 | ||
3644 | completing "func" looks for symbols between "func" and | |
3645 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
3646 | which finds "func" and "func1", but not "fund". | |
3647 | ||
3648 | And with: | |
3649 | ||
3650 | funcÿ (Latin1 'ÿ' [0xff]) | |
3651 | funcÿ1 | |
3652 | fund | |
3653 | ||
3654 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
3655 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
3656 | ||
3657 | And with: | |
3658 | ||
3659 | ÿÿ (Latin1 'ÿ' [0xff]) | |
3660 | ÿÿ1 | |
3661 | ||
3662 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
3663 | the end of the list. | |
3664 | */ | |
3665 | std::string after = search_name; | |
3666 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
3667 | after.pop_back (); | |
3668 | if (!after.empty ()) | |
3669 | after.back () = (unsigned char) after.back () + 1; | |
3670 | return after; | |
3671 | } | |
3672 | ||
5c58de74 | 3673 | /* See declaration. */ |
61d96d7e | 3674 | |
5c58de74 PA |
3675 | std::pair<std::vector<name_component>::const_iterator, |
3676 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 3677 | mapped_index_base::find_name_components_bounds |
3b00ef10 | 3678 | (const lookup_name_info &lookup_name_without_params, language lang) const |
3f563c84 | 3679 | { |
5c58de74 PA |
3680 | auto *name_cmp |
3681 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 3682 | |
3b00ef10 TT |
3683 | const char *lang_name |
3684 | = lookup_name_without_params.language_lookup_name (lang).c_str (); | |
9291a0cd | 3685 | |
3f563c84 PA |
3686 | /* Comparison function object for lower_bound that matches against a |
3687 | given symbol name. */ | |
3688 | auto lookup_compare_lower = [&] (const name_component &elem, | |
3689 | const char *name) | |
3690 | { | |
5c58de74 | 3691 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
3692 | const char *elem_name = elem_qualified + elem.name_offset; |
3693 | return name_cmp (elem_name, name) < 0; | |
3694 | }; | |
3695 | ||
3696 | /* Comparison function object for upper_bound that matches against a | |
3697 | given symbol name. */ | |
3698 | auto lookup_compare_upper = [&] (const char *name, | |
3699 | const name_component &elem) | |
3700 | { | |
5c58de74 | 3701 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
3702 | const char *elem_name = elem_qualified + elem.name_offset; |
3703 | return name_cmp (name, elem_name) < 0; | |
3704 | }; | |
3705 | ||
5c58de74 PA |
3706 | auto begin = this->name_components.begin (); |
3707 | auto end = this->name_components.end (); | |
3f563c84 PA |
3708 | |
3709 | /* Find the lower bound. */ | |
3710 | auto lower = [&] () | |
3711 | { | |
3b00ef10 | 3712 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
3713 | return begin; |
3714 | else | |
3b00ef10 | 3715 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
3716 | } (); |
3717 | ||
3718 | /* Find the upper bound. */ | |
3719 | auto upper = [&] () | |
3720 | { | |
5c58de74 | 3721 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 3722 | { |
e1ef7d7a PA |
3723 | /* In completion mode, we want UPPER to point past all |
3724 | symbols names that have the same prefix. I.e., with | |
3725 | these symbols, and completing "func": | |
3726 | ||
3727 | function << lower bound | |
3728 | function1 | |
3729 | other_function << upper bound | |
3730 | ||
3731 | We find the upper bound by looking for the insertion | |
3732 | point of "func"-with-last-character-incremented, | |
3733 | i.e. "fund". */ | |
3b00ef10 | 3734 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 3735 | if (after.empty ()) |
3f563c84 | 3736 | return end; |
e6b2f5ef PA |
3737 | return std::lower_bound (lower, end, after.c_str (), |
3738 | lookup_compare_lower); | |
3f563c84 PA |
3739 | } |
3740 | else | |
3b00ef10 | 3741 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
3742 | } (); |
3743 | ||
5c58de74 PA |
3744 | return {lower, upper}; |
3745 | } | |
3746 | ||
3747 | /* See declaration. */ | |
3748 | ||
3749 | void | |
44ed8f3e | 3750 | mapped_index_base::build_name_components () |
5c58de74 PA |
3751 | { |
3752 | if (!this->name_components.empty ()) | |
3753 | return; | |
3754 | ||
3755 | this->name_components_casing = case_sensitivity; | |
3756 | auto *name_cmp | |
3757 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3758 | ||
3759 | /* The code below only knows how to break apart components of C++ | |
3760 | symbol names (and other languages that use '::' as | |
3b00ef10 | 3761 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
3762 | auto count = this->symbol_name_count (); |
3763 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 3764 | { |
44ed8f3e | 3765 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
3766 | continue; |
3767 | ||
3768 | const char *name = this->symbol_name_at (idx); | |
3769 | ||
3770 | /* Add each name component to the name component table. */ | |
3771 | unsigned int previous_len = 0; | |
3b00ef10 TT |
3772 | |
3773 | if (strstr (name, "::") != nullptr) | |
3774 | { | |
3775 | for (unsigned int current_len = cp_find_first_component (name); | |
3776 | name[current_len] != '\0'; | |
3777 | current_len += cp_find_first_component (name + current_len)) | |
3778 | { | |
3779 | gdb_assert (name[current_len] == ':'); | |
3780 | this->name_components.push_back ({previous_len, idx}); | |
3781 | /* Skip the '::'. */ | |
3782 | current_len += 2; | |
3783 | previous_len = current_len; | |
3784 | } | |
3785 | } | |
3786 | else | |
5c58de74 | 3787 | { |
3b00ef10 TT |
3788 | /* Handle the Ada encoded (aka mangled) form here. */ |
3789 | for (const char *iter = strstr (name, "__"); | |
3790 | iter != nullptr; | |
3791 | iter = strstr (iter, "__")) | |
3792 | { | |
3793 | this->name_components.push_back ({previous_len, idx}); | |
3794 | iter += 2; | |
3795 | previous_len = iter - name; | |
3796 | } | |
5c58de74 | 3797 | } |
3b00ef10 | 3798 | |
5c58de74 PA |
3799 | this->name_components.push_back ({previous_len, idx}); |
3800 | } | |
3801 | ||
3802 | /* Sort name_components elements by name. */ | |
3803 | auto name_comp_compare = [&] (const name_component &left, | |
3804 | const name_component &right) | |
3805 | { | |
3806 | const char *left_qualified = this->symbol_name_at (left.idx); | |
3807 | const char *right_qualified = this->symbol_name_at (right.idx); | |
3808 | ||
3809 | const char *left_name = left_qualified + left.name_offset; | |
3810 | const char *right_name = right_qualified + right.name_offset; | |
3811 | ||
3812 | return name_cmp (left_name, right_name) < 0; | |
3813 | }; | |
3814 | ||
3815 | std::sort (this->name_components.begin (), | |
3816 | this->name_components.end (), | |
3817 | name_comp_compare); | |
3818 | } | |
3819 | ||
3820 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
3821 | mapped_index_base instead of the containing objfile. This is split |
3822 | to a separate function in order to be able to unit test the | |
3823 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 3824 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 3825 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
3826 | |
3827 | static void | |
3828 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 3829 | (mapped_index_base &index, |
5c58de74 PA |
3830 | const lookup_name_info &lookup_name_in, |
3831 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
3832 | enum search_domain kind, | |
3b00ef10 | 3833 | gdb::function_view<bool (offset_type)> match_callback) |
5c58de74 PA |
3834 | { |
3835 | lookup_name_info lookup_name_without_params | |
3836 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
3837 | |
3838 | /* Build the symbol name component sorted vector, if we haven't | |
3839 | yet. */ | |
3840 | index.build_name_components (); | |
3841 | ||
3f563c84 PA |
3842 | /* The same symbol may appear more than once in the range though. |
3843 | E.g., if we're looking for symbols that complete "w", and we have | |
3844 | a symbol named "w1::w2", we'll find the two name components for | |
3845 | that same symbol in the range. To be sure we only call the | |
3846 | callback once per symbol, we first collect the symbol name | |
3847 | indexes that matched in a temporary vector and ignore | |
3848 | duplicates. */ | |
3849 | std::vector<offset_type> matches; | |
3f563c84 | 3850 | |
3b00ef10 TT |
3851 | struct name_and_matcher |
3852 | { | |
3853 | symbol_name_matcher_ftype *matcher; | |
3854 | const std::string &name; | |
3855 | ||
3856 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 3857 | { |
3b00ef10 TT |
3858 | return matcher == other.matcher && name == other.name; |
3859 | } | |
3860 | }; | |
3861 | ||
3862 | /* A vector holding all the different symbol name matchers, for all | |
3863 | languages. */ | |
3864 | std::vector<name_and_matcher> matchers; | |
3865 | ||
3866 | for (int i = 0; i < nr_languages; i++) | |
3867 | { | |
3868 | enum language lang_e = (enum language) i; | |
3869 | ||
3870 | const language_defn *lang = language_def (lang_e); | |
3871 | symbol_name_matcher_ftype *name_matcher | |
3872 | = get_symbol_name_matcher (lang, lookup_name_without_params); | |
3f563c84 | 3873 | |
3b00ef10 TT |
3874 | name_and_matcher key { |
3875 | name_matcher, | |
3876 | lookup_name_without_params.language_lookup_name (lang_e) | |
3877 | }; | |
3878 | ||
3879 | /* Don't insert the same comparison routine more than once. | |
3880 | Note that we do this linear walk. This is not a problem in | |
3881 | practice because the number of supported languages is | |
3882 | low. */ | |
3883 | if (std::find (matchers.begin (), matchers.end (), key) | |
3884 | != matchers.end ()) | |
9291a0cd | 3885 | continue; |
3b00ef10 TT |
3886 | matchers.push_back (std::move (key)); |
3887 | ||
3888 | auto bounds | |
3889 | = index.find_name_components_bounds (lookup_name_without_params, | |
3890 | lang_e); | |
3891 | ||
3892 | /* Now for each symbol name in range, check to see if we have a name | |
3893 | match, and if so, call the MATCH_CALLBACK callback. */ | |
3894 | ||
3895 | for (; bounds.first != bounds.second; ++bounds.first) | |
3896 | { | |
3897 | const char *qualified = index.symbol_name_at (bounds.first->idx); | |
3898 | ||
3899 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
3900 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
3901 | continue; | |
9291a0cd | 3902 | |
3b00ef10 TT |
3903 | matches.push_back (bounds.first->idx); |
3904 | } | |
3f563c84 PA |
3905 | } |
3906 | ||
3907 | std::sort (matches.begin (), matches.end ()); | |
3908 | ||
3909 | /* Finally call the callback, once per match. */ | |
3910 | ULONGEST prev = -1; | |
3911 | for (offset_type idx : matches) | |
3912 | { | |
3913 | if (prev != idx) | |
3914 | { | |
3b00ef10 TT |
3915 | if (!match_callback (idx)) |
3916 | break; | |
3f563c84 PA |
3917 | prev = idx; |
3918 | } | |
3919 | } | |
3920 | ||
3921 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
3922 | (offset_type)-1 are both possible values. */ | |
3923 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
3924 | } | |
3925 | ||
c62446b1 PA |
3926 | #if GDB_SELF_TEST |
3927 | ||
3928 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
3929 | ||
a3c5fafd PA |
3930 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
3931 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
3932 | mapped_index_base interface. Builds an index from the symbol list | |
3933 | passed as parameter to the constructor. */ | |
3934 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
3935 | { |
3936 | public: | |
a3c5fafd PA |
3937 | mock_mapped_index (gdb::array_view<const char *> symbols) |
3938 | : m_symbol_table (symbols) | |
c62446b1 PA |
3939 | {} |
3940 | ||
a3c5fafd | 3941 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 3942 | |
a3c5fafd | 3943 | /* Return the number of names in the symbol table. */ |
632e107b | 3944 | size_t symbol_name_count () const override |
c62446b1 | 3945 | { |
a3c5fafd | 3946 | return m_symbol_table.size (); |
c62446b1 PA |
3947 | } |
3948 | ||
a3c5fafd | 3949 | /* Get the name of the symbol at IDX in the symbol table. */ |
632e107b | 3950 | const char *symbol_name_at (offset_type idx) const override |
a3c5fafd PA |
3951 | { |
3952 | return m_symbol_table[idx]; | |
3953 | } | |
c62446b1 | 3954 | |
a3c5fafd PA |
3955 | private: |
3956 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
3957 | }; |
3958 | ||
3959 | /* Convenience function that converts a NULL pointer to a "<null>" | |
3960 | string, to pass to print routines. */ | |
3961 | ||
3962 | static const char * | |
3963 | string_or_null (const char *str) | |
3964 | { | |
3965 | return str != NULL ? str : "<null>"; | |
3966 | } | |
3967 | ||
3968 | /* Check if a lookup_name_info built from | |
3969 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
3970 | index. EXPECTED_LIST is the list of expected matches, in expected | |
3971 | matching order. If no match expected, then an empty list is | |
3972 | specified. Returns true on success. On failure prints a warning | |
3973 | indicating the file:line that failed, and returns false. */ | |
3974 | ||
3975 | static bool | |
3976 | check_match (const char *file, int line, | |
3977 | mock_mapped_index &mock_index, | |
3978 | const char *name, symbol_name_match_type match_type, | |
3979 | bool completion_mode, | |
3980 | std::initializer_list<const char *> expected_list) | |
3981 | { | |
3982 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
3983 | ||
3984 | bool matched = true; | |
3985 | ||
3986 | auto mismatch = [&] (const char *expected_str, | |
3987 | const char *got) | |
3988 | { | |
3989 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
3990 | "expected=\"%s\", got=\"%s\"\n"), | |
3991 | file, line, | |
3992 | (match_type == symbol_name_match_type::FULL | |
3993 | ? "FULL" : "WILD"), | |
3994 | name, string_or_null (expected_str), string_or_null (got)); | |
3995 | matched = false; | |
3996 | }; | |
3997 | ||
3998 | auto expected_it = expected_list.begin (); | |
3999 | auto expected_end = expected_list.end (); | |
4000 | ||
a3c5fafd | 4001 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4002 | NULL, ALL_DOMAIN, |
4003 | [&] (offset_type idx) | |
4004 | { | |
a3c5fafd | 4005 | const char *matched_name = mock_index.symbol_name_at (idx); |
c62446b1 PA |
4006 | const char *expected_str |
4007 | = expected_it == expected_end ? NULL : *expected_it++; | |
4008 | ||
4009 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4010 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4011 | return true; |
c62446b1 PA |
4012 | }); |
4013 | ||
4014 | const char *expected_str | |
4015 | = expected_it == expected_end ? NULL : *expected_it++; | |
4016 | if (expected_str != NULL) | |
4017 | mismatch (expected_str, NULL); | |
4018 | ||
4019 | return matched; | |
4020 | } | |
4021 | ||
4022 | /* The symbols added to the mock mapped_index for testing (in | |
4023 | canonical form). */ | |
4024 | static const char *test_symbols[] = { | |
4025 | "function", | |
4026 | "std::bar", | |
4027 | "std::zfunction", | |
4028 | "std::zfunction2", | |
4029 | "w1::w2", | |
4030 | "ns::foo<char*>", | |
4031 | "ns::foo<int>", | |
4032 | "ns::foo<long>", | |
a20714ff PA |
4033 | "ns2::tmpl<int>::foo2", |
4034 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4035 | |
e1ef7d7a PA |
4036 | /* These are used to check that the increment-last-char in the |
4037 | matching algorithm for completion doesn't match "t1_fund" when | |
4038 | completing "t1_func". */ | |
4039 | "t1_func", | |
4040 | "t1_func1", | |
4041 | "t1_fund", | |
4042 | "t1_fund1", | |
4043 | ||
4044 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4045 | cp-name-parser understands this as a single identifier ("função" | |
4046 | is "function" in PT). */ | |
4047 | u8"u8função", | |
4048 | ||
4049 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4050 | "yfunc\377", | |
4051 | ||
4052 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4053 | "\377", | |
4054 | "\377\377123", | |
4055 | ||
c62446b1 PA |
4056 | /* A name with all sorts of complications. Starts with "z" to make |
4057 | it easier for the completion tests below. */ | |
4058 | #define Z_SYM_NAME \ | |
4059 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4060 | "::tuple<(anonymous namespace)::ui*, " \ | |
4061 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4062 | ||
4063 | Z_SYM_NAME | |
4064 | }; | |
4065 | ||
a3c5fafd PA |
4066 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4067 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4068 | in completion mode. */ | |
5c58de74 PA |
4069 | |
4070 | static bool | |
a3c5fafd | 4071 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 PA |
4072 | const char *search_name, |
4073 | gdb::array_view<const char *> expected_syms) | |
4074 | { | |
4075 | lookup_name_info lookup_name (search_name, | |
4076 | symbol_name_match_type::FULL, true); | |
4077 | ||
3b00ef10 TT |
4078 | auto bounds = index.find_name_components_bounds (lookup_name, |
4079 | language_cplus); | |
5c58de74 PA |
4080 | |
4081 | size_t distance = std::distance (bounds.first, bounds.second); | |
4082 | if (distance != expected_syms.size ()) | |
4083 | return false; | |
4084 | ||
4085 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4086 | { | |
4087 | auto nc_elem = bounds.first + exp_elem; | |
4088 | const char *qualified = index.symbol_name_at (nc_elem->idx); | |
4089 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) | |
4090 | return false; | |
4091 | } | |
4092 | ||
4093 | return true; | |
4094 | } | |
4095 | ||
4096 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4097 | method. */ | |
4098 | ||
c62446b1 | 4099 | static void |
5c58de74 PA |
4100 | test_mapped_index_find_name_component_bounds () |
4101 | { | |
4102 | mock_mapped_index mock_index (test_symbols); | |
4103 | ||
a3c5fafd | 4104 | mock_index.build_name_components (); |
5c58de74 PA |
4105 | |
4106 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4107 | method in completion mode. */ | |
4108 | { | |
4109 | static const char *expected_syms[] = { | |
4110 | "t1_func", | |
4111 | "t1_func1", | |
5c58de74 PA |
4112 | }; |
4113 | ||
a3c5fafd | 4114 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4115 | "t1_func", expected_syms)); |
4116 | } | |
4117 | ||
4118 | /* Check that the increment-last-char in the name matching algorithm | |
4119 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4120 | { | |
4121 | static const char *expected_syms1[] = { | |
4122 | "\377", | |
4123 | "\377\377123", | |
4124 | }; | |
a3c5fafd | 4125 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4126 | "\377", expected_syms1)); |
4127 | ||
4128 | static const char *expected_syms2[] = { | |
4129 | "\377\377123", | |
4130 | }; | |
a3c5fafd | 4131 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4132 | "\377\377", expected_syms2)); |
4133 | } | |
4134 | } | |
4135 | ||
4136 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4137 | ||
4138 | static void | |
4139 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4140 | { |
4141 | mock_mapped_index mock_index (test_symbols); | |
4142 | ||
4143 | /* We let all tests run until the end even if some fails, for debug | |
4144 | convenience. */ | |
4145 | bool any_mismatch = false; | |
4146 | ||
4147 | /* Create the expected symbols list (an initializer_list). Needed | |
4148 | because lists have commas, and we need to pass them to CHECK, | |
4149 | which is a macro. */ | |
4150 | #define EXPECT(...) { __VA_ARGS__ } | |
4151 | ||
4152 | /* Wrapper for check_match that passes down the current | |
4153 | __FILE__/__LINE__. */ | |
4154 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4155 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4156 | mock_index, \ | |
4157 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
4158 | EXPECTED_LIST) | |
4159 | ||
4160 | /* Identity checks. */ | |
4161 | for (const char *sym : test_symbols) | |
4162 | { | |
4163 | /* Should be able to match all existing symbols. */ | |
4164 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4165 | EXPECT (sym)); | |
4166 | ||
4167 | /* Should be able to match all existing symbols with | |
4168 | parameters. */ | |
4169 | std::string with_params = std::string (sym) + "(int)"; | |
4170 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4171 | EXPECT (sym)); | |
4172 | ||
4173 | /* Should be able to match all existing symbols with | |
4174 | parameters and qualifiers. */ | |
4175 | with_params = std::string (sym) + " ( int ) const"; | |
4176 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4177 | EXPECT (sym)); | |
4178 | ||
4179 | /* This should really find sym, but cp-name-parser.y doesn't | |
4180 | know about lvalue/rvalue qualifiers yet. */ | |
4181 | with_params = std::string (sym) + " ( int ) &&"; | |
4182 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4183 | {}); | |
4184 | } | |
4185 | ||
e1ef7d7a PA |
4186 | /* Check that the name matching algorithm for completion doesn't get |
4187 | confused with Latin1 'ÿ' / 0xff. */ | |
4188 | { | |
4189 | static const char str[] = "\377"; | |
4190 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4191 | EXPECT ("\377", "\377\377123")); | |
4192 | } | |
4193 | ||
4194 | /* Check that the increment-last-char in the matching algorithm for | |
4195 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4196 | { | |
4197 | static const char str[] = "t1_func"; | |
4198 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4199 | EXPECT ("t1_func", "t1_func1")); | |
4200 | } | |
4201 | ||
c62446b1 PA |
4202 | /* Check that completion mode works at each prefix of the expected |
4203 | symbol name. */ | |
4204 | { | |
4205 | static const char str[] = "function(int)"; | |
4206 | size_t len = strlen (str); | |
4207 | std::string lookup; | |
4208 | ||
4209 | for (size_t i = 1; i < len; i++) | |
4210 | { | |
4211 | lookup.assign (str, i); | |
4212 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4213 | EXPECT ("function")); | |
4214 | } | |
4215 | } | |
4216 | ||
4217 | /* While "w" is a prefix of both components, the match function | |
4218 | should still only be called once. */ | |
4219 | { | |
4220 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4221 | EXPECT ("w1::w2")); | |
a20714ff PA |
4222 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4223 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4224 | } |
4225 | ||
4226 | /* Same, with a "complicated" symbol. */ | |
4227 | { | |
4228 | static const char str[] = Z_SYM_NAME; | |
4229 | size_t len = strlen (str); | |
4230 | std::string lookup; | |
4231 | ||
4232 | for (size_t i = 1; i < len; i++) | |
4233 | { | |
4234 | lookup.assign (str, i); | |
4235 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4236 | EXPECT (Z_SYM_NAME)); | |
4237 | } | |
4238 | } | |
4239 | ||
4240 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4241 | { | |
4242 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4243 | {}); | |
4244 | } | |
4245 | ||
4246 | /* A complete symbol with parameters matches any overload, since the | |
4247 | index has no overload info. */ | |
4248 | { | |
4249 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4250 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4251 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4252 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4253 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4254 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4255 | } |
4256 | ||
4257 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4258 | template argument list. */ | |
4259 | { | |
4260 | static const char expected[] = "ns::foo<int>"; | |
4261 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4262 | EXPECT (expected)); | |
a20714ff PA |
4263 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4264 | EXPECT (expected)); | |
c62446b1 PA |
4265 | } |
4266 | ||
4267 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4268 | template argument list that includes a pointer. */ | |
4269 | { | |
4270 | static const char expected[] = "ns::foo<char*>"; | |
4271 | /* Try both completion and non-completion modes. */ | |
4272 | static const bool completion_mode[2] = {false, true}; | |
4273 | for (size_t i = 0; i < 2; i++) | |
4274 | { | |
4275 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4276 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4277 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4278 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4279 | |
4280 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4281 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4282 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4283 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4284 | } |
4285 | } | |
4286 | ||
4287 | { | |
4288 | /* Check method qualifiers are ignored. */ | |
4289 | static const char expected[] = "ns::foo<char*>"; | |
4290 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4291 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4292 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4293 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4294 | CHECK_MATCH ("foo < char * > ( int ) const", |
4295 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4296 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4297 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4298 | } |
4299 | ||
4300 | /* Test lookup names that don't match anything. */ | |
4301 | { | |
a20714ff PA |
4302 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4303 | {}); | |
4304 | ||
c62446b1 PA |
4305 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4306 | {}); | |
4307 | } | |
4308 | ||
a20714ff PA |
4309 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4310 | which should not be confused with a parameter list. */ | |
4311 | { | |
4312 | static const char *syms[] = { | |
4313 | "A::B::C", | |
4314 | "B::C", | |
4315 | "C", | |
4316 | "A :: B :: C ( int )", | |
4317 | "B :: C ( int )", | |
4318 | "C ( int )", | |
4319 | }; | |
4320 | ||
4321 | for (const char *s : syms) | |
4322 | { | |
4323 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4324 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4325 | } | |
4326 | } | |
4327 | ||
4328 | { | |
4329 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4330 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4331 | EXPECT (expected)); | |
4332 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4333 | EXPECT (expected)); | |
4334 | } | |
4335 | ||
c62446b1 PA |
4336 | SELF_CHECK (!any_mismatch); |
4337 | ||
4338 | #undef EXPECT | |
4339 | #undef CHECK_MATCH | |
4340 | } | |
4341 | ||
5c58de74 PA |
4342 | static void |
4343 | run_test () | |
4344 | { | |
4345 | test_mapped_index_find_name_component_bounds (); | |
4346 | test_dw2_expand_symtabs_matching_symbol (); | |
4347 | } | |
4348 | ||
c62446b1 PA |
4349 | }} // namespace selftests::dw2_expand_symtabs_matching |
4350 | ||
4351 | #endif /* GDB_SELF_TEST */ | |
4352 | ||
4b514bc8 JK |
4353 | /* If FILE_MATCHER is NULL or if PER_CU has |
4354 | dwarf2_per_cu_quick_data::MARK set (see | |
4355 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4356 | EXPANSION_NOTIFY on it. */ | |
4357 | ||
4358 | static void | |
4359 | dw2_expand_symtabs_matching_one | |
4360 | (struct dwarf2_per_cu_data *per_cu, | |
4361 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
4362 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4363 | { | |
4364 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4365 | { | |
4366 | bool symtab_was_null | |
4367 | = (per_cu->v.quick->compunit_symtab == NULL); | |
4368 | ||
58f0c718 | 4369 | dw2_instantiate_symtab (per_cu, false); |
4b514bc8 JK |
4370 | |
4371 | if (expansion_notify != NULL | |
4372 | && symtab_was_null | |
4373 | && per_cu->v.quick->compunit_symtab != NULL) | |
4374 | expansion_notify (per_cu->v.quick->compunit_symtab); | |
4375 | } | |
4376 | } | |
4377 | ||
3f563c84 PA |
4378 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4379 | matched, to expand corresponding CUs that were marked. IDX is the | |
4380 | index of the symbol name that matched. */ | |
4381 | ||
4382 | static void | |
4383 | dw2_expand_marked_cus | |
ed2dc618 | 4384 | (struct dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, |
3f563c84 PA |
4385 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4386 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4387 | search_domain kind) | |
4388 | { | |
3f563c84 PA |
4389 | offset_type *vec, vec_len, vec_idx; |
4390 | bool global_seen = false; | |
ed2dc618 | 4391 | mapped_index &index = *dwarf2_per_objfile->index_table; |
3f563c84 | 4392 | |
61920122 | 4393 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 4394 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
4395 | vec_len = MAYBE_SWAP (vec[0]); |
4396 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4397 | { | |
61920122 PA |
4398 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
4399 | /* This value is only valid for index versions >= 7. */ | |
4400 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4401 | gdb_index_symbol_kind symbol_kind = | |
4402 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4403 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4404 | /* Only check the symbol attributes if they're present. | |
4405 | Indices prior to version 7 don't record them, | |
4406 | and indices >= 7 may elide them for certain symbols | |
4407 | (gold does this). */ | |
4408 | int attrs_valid = | |
4409 | (index.version >= 7 | |
4410 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4411 | ||
4412 | /* Work around gold/15646. */ | |
4413 | if (attrs_valid) | |
9291a0cd | 4414 | { |
61920122 PA |
4415 | if (!is_static && global_seen) |
4416 | continue; | |
4417 | if (!is_static) | |
4418 | global_seen = true; | |
4419 | } | |
3190f0c6 | 4420 | |
61920122 PA |
4421 | /* Only check the symbol's kind if it has one. */ |
4422 | if (attrs_valid) | |
4423 | { | |
4424 | switch (kind) | |
8943b874 | 4425 | { |
61920122 PA |
4426 | case VARIABLES_DOMAIN: |
4427 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4428 | continue; | |
4429 | break; | |
4430 | case FUNCTIONS_DOMAIN: | |
4431 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4432 | continue; |
61920122 PA |
4433 | break; |
4434 | case TYPES_DOMAIN: | |
4435 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4436 | continue; | |
4437 | break; | |
59c35742 AB |
4438 | case MODULES_DOMAIN: |
4439 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4440 | continue; | |
4441 | break; | |
61920122 PA |
4442 | default: |
4443 | break; | |
8943b874 | 4444 | } |
61920122 | 4445 | } |
8943b874 | 4446 | |
61920122 | 4447 | /* Don't crash on bad data. */ |
b76e467d | 4448 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4449 | + dwarf2_per_objfile->all_type_units.size ())) |
61920122 | 4450 | { |
b98664d3 | 4451 | complaint (_(".gdb_index entry has bad CU index" |
ed2dc618 SM |
4452 | " [in module %s]"), |
4453 | objfile_name (dwarf2_per_objfile->objfile)); | |
61920122 PA |
4454 | continue; |
4455 | } | |
4456 | ||
ff4c9fec | 4457 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
4b514bc8 JK |
4458 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, |
4459 | expansion_notify); | |
61920122 PA |
4460 | } |
4461 | } | |
4462 | ||
4b514bc8 JK |
4463 | /* If FILE_MATCHER is non-NULL, set all the |
4464 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4465 | that match FILE_MATCHER. */ | |
4466 | ||
61920122 | 4467 | static void |
4b514bc8 | 4468 | dw_expand_symtabs_matching_file_matcher |
ed2dc618 SM |
4469 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4470 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) | |
61920122 | 4471 | { |
4b514bc8 | 4472 | if (file_matcher == NULL) |
61920122 PA |
4473 | return; |
4474 | ||
4b514bc8 JK |
4475 | objfile *const objfile = dwarf2_per_objfile->objfile; |
4476 | ||
4477 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, | |
4478 | htab_eq_pointer, | |
4479 | NULL, xcalloc, xfree)); | |
4480 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4481 | htab_eq_pointer, |
4482 | NULL, xcalloc, xfree)); | |
61920122 | 4483 | |
4b514bc8 JK |
4484 | /* The rule is CUs specify all the files, including those used by |
4485 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4486 | |
b76e467d | 4487 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 4488 | { |
927aa2e7 JK |
4489 | QUIT; |
4490 | ||
4491 | per_cu->v.quick->mark = 0; | |
4492 | ||
4493 | /* We only need to look at symtabs not already expanded. */ | |
4494 | if (per_cu->v.quick->compunit_symtab) | |
4495 | continue; | |
4496 | ||
b76e467d | 4497 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
4498 | if (file_data == NULL) |
4499 | continue; | |
4500 | ||
4501 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4502 | continue; | |
4503 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4504 | { | |
4505 | per_cu->v.quick->mark = 1; | |
4506 | continue; | |
4507 | } | |
4508 | ||
b76e467d | 4509 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4510 | { |
4511 | const char *this_real_name; | |
4512 | ||
4513 | if (file_matcher (file_data->file_names[j], false)) | |
4514 | { | |
4515 | per_cu->v.quick->mark = 1; | |
4516 | break; | |
4517 | } | |
4518 | ||
4519 | /* Before we invoke realpath, which can get expensive when many | |
4520 | files are involved, do a quick comparison of the basenames. */ | |
4521 | if (!basenames_may_differ | |
4522 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4523 | true)) | |
4524 | continue; | |
4525 | ||
4526 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
4527 | if (file_matcher (this_real_name, false)) | |
4528 | { | |
4529 | per_cu->v.quick->mark = 1; | |
4530 | break; | |
4531 | } | |
4532 | } | |
4533 | ||
b76e467d SM |
4534 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4535 | ? visited_found.get () | |
4536 | : visited_not_found.get (), | |
4537 | file_data, INSERT); | |
927aa2e7 JK |
4538 | *slot = file_data; |
4539 | } | |
4540 | } | |
4541 | ||
4542 | static void | |
4543 | dw2_expand_symtabs_matching | |
4544 | (struct objfile *objfile, | |
4545 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
4546 | const lookup_name_info &lookup_name, | |
4547 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4548 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4549 | enum search_domain kind) | |
4550 | { | |
ed2dc618 SM |
4551 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4552 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
4553 | |
4554 | /* index_table is NULL if OBJF_READNOW. */ | |
4555 | if (!dwarf2_per_objfile->index_table) | |
4556 | return; | |
4557 | ||
ed2dc618 | 4558 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
927aa2e7 JK |
4559 | |
4560 | mapped_index &index = *dwarf2_per_objfile->index_table; | |
4561 | ||
4562 | dw2_expand_symtabs_matching_symbol (index, lookup_name, | |
4563 | symbol_matcher, | |
4564 | kind, [&] (offset_type idx) | |
4565 | { | |
ed2dc618 | 4566 | dw2_expand_marked_cus (dwarf2_per_objfile, idx, file_matcher, |
927aa2e7 | 4567 | expansion_notify, kind); |
3b00ef10 | 4568 | return true; |
927aa2e7 JK |
4569 | }); |
4570 | } | |
4571 | ||
4572 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
4573 | symtab. */ | |
4574 | ||
4575 | static struct compunit_symtab * | |
4576 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4577 | CORE_ADDR pc) | |
4578 | { | |
4579 | int i; | |
4580 | ||
4581 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
4582 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4583 | return cust; | |
4584 | ||
4585 | if (cust->includes == NULL) | |
4586 | return NULL; | |
4587 | ||
4588 | for (i = 0; cust->includes[i]; ++i) | |
4589 | { | |
4590 | struct compunit_symtab *s = cust->includes[i]; | |
4591 | ||
4592 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
4593 | if (s != NULL) | |
4594 | return s; | |
4595 | } | |
4596 | ||
4597 | return NULL; | |
4598 | } | |
4599 | ||
4600 | static struct compunit_symtab * | |
4601 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4602 | struct bound_minimal_symbol msymbol, | |
4603 | CORE_ADDR pc, | |
4604 | struct obj_section *section, | |
4605 | int warn_if_readin) | |
4606 | { | |
4607 | struct dwarf2_per_cu_data *data; | |
4608 | struct compunit_symtab *result; | |
4609 | ||
d320c2b5 | 4610 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
4611 | return NULL; |
4612 | ||
b3b3bada | 4613 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
d320c2b5 TT |
4614 | data = (struct dwarf2_per_cu_data *) addrmap_find |
4615 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
4616 | if (!data) |
4617 | return NULL; | |
4618 | ||
4619 | if (warn_if_readin && data->v.quick->compunit_symtab) | |
4620 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), | |
4621 | paddress (get_objfile_arch (objfile), pc)); | |
4622 | ||
4623 | result | |
58f0c718 TT |
4624 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data, |
4625 | false), | |
927aa2e7 JK |
4626 | pc); |
4627 | gdb_assert (result != NULL); | |
4628 | return result; | |
4629 | } | |
4630 | ||
4631 | static void | |
4632 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
4633 | void *data, int need_fullname) | |
4634 | { | |
ed2dc618 SM |
4635 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4636 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
4637 | |
4638 | if (!dwarf2_per_objfile->filenames_cache) | |
4639 | { | |
4640 | dwarf2_per_objfile->filenames_cache.emplace (); | |
4641 | ||
4642 | htab_up visited (htab_create_alloc (10, | |
4643 | htab_hash_pointer, htab_eq_pointer, | |
4644 | NULL, xcalloc, xfree)); | |
4645 | ||
4646 | /* The rule is CUs specify all the files, including those used | |
4647 | by any TU, so there's no need to scan TUs here. We can | |
4648 | ignore file names coming from already-expanded CUs. */ | |
4649 | ||
b76e467d | 4650 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 4651 | { |
927aa2e7 JK |
4652 | if (per_cu->v.quick->compunit_symtab) |
4653 | { | |
4654 | void **slot = htab_find_slot (visited.get (), | |
4655 | per_cu->v.quick->file_names, | |
4656 | INSERT); | |
4657 | ||
4658 | *slot = per_cu->v.quick->file_names; | |
4659 | } | |
4660 | } | |
4661 | ||
b76e467d | 4662 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 4663 | { |
927aa2e7 JK |
4664 | /* We only need to look at symtabs not already expanded. */ |
4665 | if (per_cu->v.quick->compunit_symtab) | |
4666 | continue; | |
4667 | ||
b76e467d | 4668 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
4669 | if (file_data == NULL) |
4670 | continue; | |
4671 | ||
b76e467d | 4672 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
4673 | if (*slot) |
4674 | { | |
4675 | /* Already visited. */ | |
4676 | continue; | |
4677 | } | |
4678 | *slot = file_data; | |
4679 | ||
4680 | for (int j = 0; j < file_data->num_file_names; ++j) | |
4681 | { | |
4682 | const char *filename = file_data->file_names[j]; | |
4683 | dwarf2_per_objfile->filenames_cache->seen (filename); | |
4684 | } | |
4685 | } | |
4686 | } | |
4687 | ||
4688 | dwarf2_per_objfile->filenames_cache->traverse ([&] (const char *filename) | |
4689 | { | |
4690 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
4691 | ||
4692 | if (need_fullname) | |
4693 | this_real_name = gdb_realpath (filename); | |
4694 | (*fun) (filename, this_real_name.get (), data); | |
4695 | }); | |
4696 | } | |
4697 | ||
4698 | static int | |
4699 | dw2_has_symbols (struct objfile *objfile) | |
4700 | { | |
4701 | return 1; | |
4702 | } | |
4703 | ||
4704 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4705 | { | |
4706 | dw2_has_symbols, | |
4707 | dw2_find_last_source_symtab, | |
4708 | dw2_forget_cached_source_info, | |
4709 | dw2_map_symtabs_matching_filename, | |
4710 | dw2_lookup_symbol, | |
4711 | dw2_print_stats, | |
4712 | dw2_dump, | |
927aa2e7 JK |
4713 | dw2_expand_symtabs_for_function, |
4714 | dw2_expand_all_symtabs, | |
4715 | dw2_expand_symtabs_with_fullname, | |
4716 | dw2_map_matching_symbols, | |
4717 | dw2_expand_symtabs_matching, | |
4718 | dw2_find_pc_sect_compunit_symtab, | |
4719 | NULL, | |
4720 | dw2_map_symbol_filenames | |
4721 | }; | |
4722 | ||
4723 | /* DWARF-5 debug_names reader. */ | |
4724 | ||
4725 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
4726 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
4727 | ||
4728 | /* A helper function that reads the .debug_names section in SECTION | |
4729 | and fills in MAP. FILENAME is the name of the file containing the | |
4730 | section; it is used for error reporting. | |
4731 | ||
4732 | Returns true if all went well, false otherwise. */ | |
4733 | ||
4734 | static bool | |
4735 | read_debug_names_from_section (struct objfile *objfile, | |
4736 | const char *filename, | |
4737 | struct dwarf2_section_info *section, | |
4738 | mapped_debug_names &map) | |
4739 | { | |
96b79293 | 4740 | if (section->empty ()) |
927aa2e7 JK |
4741 | return false; |
4742 | ||
4743 | /* Older elfutils strip versions could keep the section in the main | |
4744 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 4745 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
4746 | return false; |
4747 | ||
96b79293 | 4748 | section->read (objfile); |
927aa2e7 JK |
4749 | |
4750 | map.dwarf5_byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
4751 | ||
4752 | const gdb_byte *addr = section->buffer; | |
4753 | ||
96b79293 | 4754 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
4755 | |
4756 | unsigned int bytes_read; | |
4757 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
4758 | addr += bytes_read; | |
4759 | ||
4760 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
4761 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
4762 | if (bytes_read + length != section->size) | |
4763 | { | |
4764 | /* There may be multiple per-CU indices. */ | |
4765 | warning (_("Section .debug_names in %s length %s does not match " | |
4766 | "section length %s, ignoring .debug_names."), | |
4767 | filename, plongest (bytes_read + length), | |
4768 | pulongest (section->size)); | |
4769 | return false; | |
4770 | } | |
4771 | ||
4772 | /* The version number. */ | |
4773 | uint16_t version = read_2_bytes (abfd, addr); | |
4774 | addr += 2; | |
4775 | if (version != 5) | |
4776 | { | |
4777 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
4778 | "ignoring .debug_names."), | |
4779 | filename, version); | |
4780 | return false; | |
4781 | } | |
4782 | ||
4783 | /* Padding. */ | |
4784 | uint16_t padding = read_2_bytes (abfd, addr); | |
4785 | addr += 2; | |
4786 | if (padding != 0) | |
4787 | { | |
4788 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
4789 | "ignoring .debug_names."), | |
4790 | filename, padding); | |
4791 | return false; | |
4792 | } | |
4793 | ||
4794 | /* comp_unit_count - The number of CUs in the CU list. */ | |
4795 | map.cu_count = read_4_bytes (abfd, addr); | |
4796 | addr += 4; | |
4797 | ||
4798 | /* local_type_unit_count - The number of TUs in the local TU | |
4799 | list. */ | |
4800 | map.tu_count = read_4_bytes (abfd, addr); | |
4801 | addr += 4; | |
4802 | ||
4803 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
4804 | list. */ | |
4805 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
4806 | addr += 4; | |
4807 | if (foreign_tu_count != 0) | |
4808 | { | |
4809 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
4810 | "ignoring .debug_names."), | |
4811 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
4812 | return false; | |
4813 | } | |
4814 | ||
4815 | /* bucket_count - The number of hash buckets in the hash lookup | |
4816 | table. */ | |
4817 | map.bucket_count = read_4_bytes (abfd, addr); | |
4818 | addr += 4; | |
4819 | ||
4820 | /* name_count - The number of unique names in the index. */ | |
4821 | map.name_count = read_4_bytes (abfd, addr); | |
4822 | addr += 4; | |
4823 | ||
4824 | /* abbrev_table_size - The size in bytes of the abbreviations | |
4825 | table. */ | |
4826 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
4827 | addr += 4; | |
4828 | ||
4829 | /* augmentation_string_size - The size in bytes of the augmentation | |
4830 | string. This value is rounded up to a multiple of 4. */ | |
4831 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
4832 | addr += 4; | |
4833 | map.augmentation_is_gdb = ((augmentation_string_size | |
4834 | == sizeof (dwarf5_augmentation)) | |
4835 | && memcmp (addr, dwarf5_augmentation, | |
4836 | sizeof (dwarf5_augmentation)) == 0); | |
4837 | augmentation_string_size += (-augmentation_string_size) & 3; | |
4838 | addr += augmentation_string_size; | |
4839 | ||
4840 | /* List of CUs */ | |
4841 | map.cu_table_reordered = addr; | |
4842 | addr += map.cu_count * map.offset_size; | |
4843 | ||
4844 | /* List of Local TUs */ | |
4845 | map.tu_table_reordered = addr; | |
4846 | addr += map.tu_count * map.offset_size; | |
4847 | ||
4848 | /* Hash Lookup Table */ | |
4849 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
4850 | addr += map.bucket_count * 4; | |
4851 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
4852 | addr += map.name_count * 4; | |
4853 | ||
4854 | /* Name Table */ | |
4855 | map.name_table_string_offs_reordered = addr; | |
4856 | addr += map.name_count * map.offset_size; | |
4857 | map.name_table_entry_offs_reordered = addr; | |
4858 | addr += map.name_count * map.offset_size; | |
4859 | ||
4860 | const gdb_byte *abbrev_table_start = addr; | |
4861 | for (;;) | |
4862 | { | |
927aa2e7 JK |
4863 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
4864 | addr += bytes_read; | |
4865 | if (index_num == 0) | |
4866 | break; | |
4867 | ||
4868 | const auto insertpair | |
4869 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
4870 | if (!insertpair.second) | |
4871 | { | |
4872 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
4873 | "ignoring .debug_names."), | |
4874 | filename, pulongest (index_num)); | |
4875 | return false; | |
4876 | } | |
4877 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
4878 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4879 | addr += bytes_read; | |
4880 | ||
4881 | for (;;) | |
4882 | { | |
4883 | mapped_debug_names::index_val::attr attr; | |
4884 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4885 | addr += bytes_read; | |
4886 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4887 | addr += bytes_read; | |
4888 | if (attr.form == DW_FORM_implicit_const) | |
4889 | { | |
4890 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
4891 | &bytes_read); | |
4892 | addr += bytes_read; | |
4893 | } | |
4894 | if (attr.dw_idx == 0 && attr.form == 0) | |
4895 | break; | |
4896 | indexval.attr_vec.push_back (std::move (attr)); | |
4897 | } | |
4898 | } | |
4899 | if (addr != abbrev_table_start + abbrev_table_size) | |
4900 | { | |
4901 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
4902 | "of size %s vs. written as %u, ignoring .debug_names."), |
4903 | filename, plongest (addr - abbrev_table_start), | |
4904 | abbrev_table_size); | |
927aa2e7 JK |
4905 | return false; |
4906 | } | |
4907 | map.entry_pool = addr; | |
4908 | ||
4909 | return true; | |
4910 | } | |
4911 | ||
4912 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
4913 | list. */ | |
4914 | ||
4915 | static void | |
ed2dc618 | 4916 | create_cus_from_debug_names_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
4917 | const mapped_debug_names &map, |
4918 | dwarf2_section_info §ion, | |
b76e467d | 4919 | bool is_dwz) |
927aa2e7 JK |
4920 | { |
4921 | sect_offset sect_off_prev; | |
4922 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
4923 | { | |
4924 | sect_offset sect_off_next; | |
4925 | if (i < map.cu_count) | |
4926 | { | |
4927 | sect_off_next | |
4928 | = (sect_offset) (extract_unsigned_integer | |
4929 | (map.cu_table_reordered + i * map.offset_size, | |
4930 | map.offset_size, | |
4931 | map.dwarf5_byte_order)); | |
4932 | } | |
4933 | else | |
4934 | sect_off_next = (sect_offset) section.size; | |
4935 | if (i >= 1) | |
4936 | { | |
4937 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 4938 | dwarf2_per_cu_data *per_cu |
ed2dc618 | 4939 | = create_cu_from_index_list (dwarf2_per_objfile, §ion, is_dwz, |
927aa2e7 | 4940 | sect_off_prev, length); |
b76e467d | 4941 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
4942 | } |
4943 | sect_off_prev = sect_off_next; | |
4944 | } | |
4945 | } | |
4946 | ||
4947 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 4948 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
4949 | |
4950 | static void | |
ed2dc618 | 4951 | create_cus_from_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
4952 | const mapped_debug_names &map, |
4953 | const mapped_debug_names &dwz_map) | |
4954 | { | |
b76e467d SM |
4955 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
4956 | dwarf2_per_objfile->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 4957 | |
ed2dc618 SM |
4958 | create_cus_from_debug_names_list (dwarf2_per_objfile, map, |
4959 | dwarf2_per_objfile->info, | |
b76e467d | 4960 | false /* is_dwz */); |
927aa2e7 JK |
4961 | |
4962 | if (dwz_map.cu_count == 0) | |
4963 | return; | |
4964 | ||
ed2dc618 SM |
4965 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4966 | create_cus_from_debug_names_list (dwarf2_per_objfile, dwz_map, dwz->info, | |
b76e467d | 4967 | true /* is_dwz */); |
927aa2e7 JK |
4968 | } |
4969 | ||
4970 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
4971 | elements of all the CUs and return true. Otherwise, return false. */ | |
4972 | ||
4973 | static bool | |
ed2dc618 | 4974 | dwarf2_read_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile) |
927aa2e7 | 4975 | { |
22ca247e TT |
4976 | std::unique_ptr<mapped_debug_names> map |
4977 | (new mapped_debug_names (dwarf2_per_objfile)); | |
ed2dc618 SM |
4978 | mapped_debug_names dwz_map (dwarf2_per_objfile); |
4979 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
927aa2e7 JK |
4980 | |
4981 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
4982 | &dwarf2_per_objfile->debug_names, | |
22ca247e | 4983 | *map)) |
927aa2e7 JK |
4984 | return false; |
4985 | ||
4986 | /* Don't use the index if it's empty. */ | |
22ca247e | 4987 | if (map->name_count == 0) |
927aa2e7 JK |
4988 | return false; |
4989 | ||
4990 | /* If there is a .dwz file, read it so we can get its CU list as | |
4991 | well. */ | |
ed2dc618 | 4992 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
927aa2e7 JK |
4993 | if (dwz != NULL) |
4994 | { | |
4995 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 4996 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
4997 | &dwz->debug_names, dwz_map)) |
4998 | { | |
4999 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5000 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5001 | return false; |
5002 | } | |
5003 | } | |
5004 | ||
22ca247e | 5005 | create_cus_from_debug_names (dwarf2_per_objfile, *map, dwz_map); |
927aa2e7 | 5006 | |
22ca247e | 5007 | if (map->tu_count != 0) |
927aa2e7 JK |
5008 | { |
5009 | /* We can only handle a single .debug_types when we have an | |
5010 | index. */ | |
fd5866f6 | 5011 | if (dwarf2_per_objfile->types.size () != 1) |
927aa2e7 JK |
5012 | return false; |
5013 | ||
fd5866f6 | 5014 | dwarf2_section_info *section = &dwarf2_per_objfile->types[0]; |
927aa2e7 JK |
5015 | |
5016 | create_signatured_type_table_from_debug_names | |
22ca247e | 5017 | (dwarf2_per_objfile, *map, section, &dwarf2_per_objfile->abbrev); |
927aa2e7 JK |
5018 | } |
5019 | ||
ed2dc618 SM |
5020 | create_addrmap_from_aranges (dwarf2_per_objfile, |
5021 | &dwarf2_per_objfile->debug_aranges); | |
927aa2e7 | 5022 | |
22ca247e | 5023 | dwarf2_per_objfile->debug_names_table = std::move (map); |
927aa2e7 JK |
5024 | dwarf2_per_objfile->using_index = 1; |
5025 | dwarf2_per_objfile->quick_file_names_table = | |
b76e467d | 5026 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
927aa2e7 JK |
5027 | |
5028 | return true; | |
5029 | } | |
5030 | ||
927aa2e7 JK |
5031 | /* Type used to manage iterating over all CUs looking for a symbol for |
5032 | .debug_names. */ | |
5033 | ||
5034 | class dw2_debug_names_iterator | |
5035 | { | |
5036 | public: | |
927aa2e7 | 5037 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5038 | gdb::optional<block_enum> block_index, |
5039 | domain_enum domain, | |
927aa2e7 | 5040 | const char *name) |
2b79f376 | 5041 | : m_map (map), m_block_index (block_index), m_domain (domain), |
927aa2e7 JK |
5042 | m_addr (find_vec_in_debug_names (map, name)) |
5043 | {} | |
5044 | ||
5045 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5046 | search_domain search, uint32_t namei) | |
5047 | : m_map (map), | |
5048 | m_search (search), | |
5049 | m_addr (find_vec_in_debug_names (map, namei)) | |
5050 | {} | |
5051 | ||
3b00ef10 TT |
5052 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5053 | block_enum block_index, domain_enum domain, | |
5054 | uint32_t namei) | |
5055 | : m_map (map), m_block_index (block_index), m_domain (domain), | |
5056 | m_addr (find_vec_in_debug_names (map, namei)) | |
5057 | {} | |
5058 | ||
927aa2e7 JK |
5059 | /* Return the next matching CU or NULL if there are no more. */ |
5060 | dwarf2_per_cu_data *next (); | |
5061 | ||
5062 | private: | |
5063 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5064 | const char *name); | |
5065 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5066 | uint32_t namei); | |
5067 | ||
5068 | /* The internalized form of .debug_names. */ | |
5069 | const mapped_debug_names &m_map; | |
5070 | ||
2b79f376 SM |
5071 | /* If set, only look for symbols that match that block. Valid values are |
5072 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5073 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5074 | |
5075 | /* The kind of symbol we're looking for. */ | |
5076 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5077 | const search_domain m_search = ALL_DOMAIN; | |
5078 | ||
5079 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5080 | not found. */ | |
5081 | const gdb_byte *m_addr; | |
5082 | }; | |
5083 | ||
5084 | const char * | |
5085 | mapped_debug_names::namei_to_name (uint32_t namei) const | |
5086 | { | |
5087 | const ULONGEST namei_string_offs | |
5088 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5089 | + namei * offset_size), | |
5090 | offset_size, | |
5091 | dwarf5_byte_order); | |
4f44ae6c TT |
5092 | return read_indirect_string_at_offset (dwarf2_per_objfile, |
5093 | namei_string_offs); | |
927aa2e7 JK |
5094 | } |
5095 | ||
5096 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5097 | found, return pointer to its pool data. If NAME cannot be found, | |
5098 | return NULL. */ | |
5099 | ||
5100 | const gdb_byte * | |
5101 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5102 | (const mapped_debug_names &map, const char *name) | |
5103 | { | |
5104 | int (*cmp) (const char *, const char *); | |
5105 | ||
54ee4252 | 5106 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5107 | if (current_language->la_language == language_cplus |
5108 | || current_language->la_language == language_fortran | |
5109 | || current_language->la_language == language_d) | |
5110 | { | |
5111 | /* NAME is already canonical. Drop any qualifiers as | |
5112 | .debug_names does not contain any. */ | |
5113 | ||
5114 | if (strchr (name, '(') != NULL) | |
5115 | { | |
54ee4252 | 5116 | without_params = cp_remove_params (name); |
927aa2e7 | 5117 | if (without_params != NULL) |
54ee4252 | 5118 | name = without_params.get (); |
927aa2e7 JK |
5119 | } |
5120 | } | |
5121 | ||
5122 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5123 | ||
5124 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5125 | uint32_t namei | |
5126 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5127 | (map.bucket_table_reordered | |
5128 | + (full_hash % map.bucket_count)), 4, | |
5129 | map.dwarf5_byte_order); | |
5130 | if (namei == 0) | |
5131 | return NULL; | |
5132 | --namei; | |
5133 | if (namei >= map.name_count) | |
5134 | { | |
b98664d3 | 5135 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5136 | "[in module %s]"), |
5137 | namei, map.name_count, | |
ed2dc618 | 5138 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5139 | return NULL; |
5140 | } | |
5141 | ||
5142 | for (;;) | |
5143 | { | |
5144 | const uint32_t namei_full_hash | |
5145 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5146 | (map.hash_table_reordered + namei), 4, | |
5147 | map.dwarf5_byte_order); | |
5148 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5149 | return NULL; | |
5150 | ||
5151 | if (full_hash == namei_full_hash) | |
5152 | { | |
5153 | const char *const namei_string = map.namei_to_name (namei); | |
5154 | ||
5155 | #if 0 /* An expensive sanity check. */ | |
5156 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5157 | { | |
b98664d3 | 5158 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5159 | "[in module %s]"), |
5160 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5161 | return NULL; | |
5162 | } | |
5163 | #endif | |
5164 | ||
5165 | if (cmp (namei_string, name) == 0) | |
5166 | { | |
5167 | const ULONGEST namei_entry_offs | |
5168 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5169 | + namei * map.offset_size), | |
5170 | map.offset_size, map.dwarf5_byte_order); | |
5171 | return map.entry_pool + namei_entry_offs; | |
5172 | } | |
5173 | } | |
5174 | ||
5175 | ++namei; | |
5176 | if (namei >= map.name_count) | |
5177 | return NULL; | |
5178 | } | |
5179 | } | |
5180 | ||
5181 | const gdb_byte * | |
5182 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5183 | (const mapped_debug_names &map, uint32_t namei) | |
5184 | { | |
5185 | if (namei >= map.name_count) | |
5186 | { | |
b98664d3 | 5187 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5188 | "[in module %s]"), |
5189 | namei, map.name_count, | |
ed2dc618 | 5190 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5191 | return NULL; |
5192 | } | |
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 | /* See dw2_debug_names_iterator. */ | |
5202 | ||
5203 | dwarf2_per_cu_data * | |
5204 | dw2_debug_names_iterator::next () | |
5205 | { | |
5206 | if (m_addr == NULL) | |
5207 | return NULL; | |
5208 | ||
ed2dc618 SM |
5209 | struct dwarf2_per_objfile *dwarf2_per_objfile = m_map.dwarf2_per_objfile; |
5210 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5211 | bfd *const abfd = objfile->obfd; | |
927aa2e7 JK |
5212 | |
5213 | again: | |
5214 | ||
5215 | unsigned int bytes_read; | |
5216 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5217 | m_addr += bytes_read; | |
5218 | if (abbrev == 0) | |
5219 | return NULL; | |
5220 | ||
5221 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5222 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5223 | { | |
b98664d3 | 5224 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5225 | "[in module %s]"), |
ed2dc618 | 5226 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5227 | return NULL; |
5228 | } | |
5229 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5230 | enum class symbol_linkage { |
5231 | unknown, | |
5232 | static_, | |
5233 | extern_, | |
23c13d42 | 5234 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5235 | dwarf2_per_cu_data *per_cu = NULL; |
5236 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5237 | { | |
5238 | ULONGEST ull; | |
5239 | switch (attr.form) | |
5240 | { | |
5241 | case DW_FORM_implicit_const: | |
5242 | ull = attr.implicit_const; | |
5243 | break; | |
5244 | case DW_FORM_flag_present: | |
5245 | ull = 1; | |
5246 | break; | |
5247 | case DW_FORM_udata: | |
5248 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5249 | m_addr += bytes_read; | |
5250 | break; | |
5251 | default: | |
b98664d3 | 5252 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5253 | dwarf_form_name (attr.form), |
ed2dc618 | 5254 | objfile_name (objfile)); |
927aa2e7 JK |
5255 | return NULL; |
5256 | } | |
5257 | switch (attr.dw_idx) | |
5258 | { | |
5259 | case DW_IDX_compile_unit: | |
5260 | /* Don't crash on bad data. */ | |
b76e467d | 5261 | if (ull >= dwarf2_per_objfile->all_comp_units.size ()) |
927aa2e7 | 5262 | { |
b98664d3 | 5263 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5264 | " [in module %s]"), |
5265 | pulongest (ull), | |
5266 | objfile_name (dwarf2_per_objfile->objfile)); | |
5267 | continue; | |
5268 | } | |
ff4c9fec | 5269 | per_cu = dwarf2_per_objfile->get_cutu (ull); |
927aa2e7 | 5270 | break; |
8af5c486 JK |
5271 | case DW_IDX_type_unit: |
5272 | /* Don't crash on bad data. */ | |
b2bdb8cf | 5273 | if (ull >= dwarf2_per_objfile->all_type_units.size ()) |
8af5c486 | 5274 | { |
b98664d3 | 5275 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5276 | " [in module %s]"), |
5277 | pulongest (ull), | |
5278 | objfile_name (dwarf2_per_objfile->objfile)); | |
5279 | continue; | |
5280 | } | |
ff4c9fec | 5281 | per_cu = &dwarf2_per_objfile->get_tu (ull)->per_cu; |
8af5c486 | 5282 | break; |
927aa2e7 JK |
5283 | case DW_IDX_GNU_internal: |
5284 | if (!m_map.augmentation_is_gdb) | |
5285 | break; | |
23c13d42 | 5286 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5287 | break; |
5288 | case DW_IDX_GNU_external: | |
5289 | if (!m_map.augmentation_is_gdb) | |
5290 | break; | |
23c13d42 | 5291 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5292 | break; |
5293 | } | |
5294 | } | |
5295 | ||
5296 | /* Skip if already read in. */ | |
5297 | if (per_cu->v.quick->compunit_symtab) | |
5298 | goto again; | |
5299 | ||
5300 | /* Check static vs global. */ | |
23c13d42 | 5301 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5302 | { |
2b79f376 | 5303 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5304 | const bool symbol_is_static = |
5305 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5306 | if (want_static != symbol_is_static) |
2b79f376 | 5307 | goto again; |
927aa2e7 JK |
5308 | } |
5309 | ||
5310 | /* Match dw2_symtab_iter_next, symbol_kind | |
5311 | and debug_names::psymbol_tag. */ | |
5312 | switch (m_domain) | |
5313 | { | |
5314 | case VAR_DOMAIN: | |
5315 | switch (indexval.dwarf_tag) | |
5316 | { | |
5317 | case DW_TAG_variable: | |
5318 | case DW_TAG_subprogram: | |
5319 | /* Some types are also in VAR_DOMAIN. */ | |
5320 | case DW_TAG_typedef: | |
5321 | case DW_TAG_structure_type: | |
5322 | break; | |
5323 | default: | |
5324 | goto again; | |
5325 | } | |
5326 | break; | |
5327 | case STRUCT_DOMAIN: | |
5328 | switch (indexval.dwarf_tag) | |
5329 | { | |
5330 | case DW_TAG_typedef: | |
5331 | case DW_TAG_structure_type: | |
5332 | break; | |
5333 | default: | |
5334 | goto again; | |
5335 | } | |
5336 | break; | |
5337 | case LABEL_DOMAIN: | |
5338 | switch (indexval.dwarf_tag) | |
5339 | { | |
5340 | case 0: | |
5341 | case DW_TAG_variable: | |
5342 | break; | |
5343 | default: | |
5344 | goto again; | |
5345 | } | |
5346 | break; | |
59c35742 AB |
5347 | case MODULE_DOMAIN: |
5348 | switch (indexval.dwarf_tag) | |
5349 | { | |
5350 | case DW_TAG_module: | |
5351 | break; | |
5352 | default: | |
5353 | goto again; | |
5354 | } | |
5355 | break; | |
927aa2e7 JK |
5356 | default: |
5357 | break; | |
5358 | } | |
5359 | ||
5360 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5361 | debug_names::psymbol_tag. */ | |
5362 | switch (m_search) | |
4b514bc8 | 5363 | { |
927aa2e7 JK |
5364 | case VARIABLES_DOMAIN: |
5365 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5366 | { |
927aa2e7 JK |
5367 | case DW_TAG_variable: |
5368 | break; | |
5369 | default: | |
5370 | goto again; | |
4b514bc8 | 5371 | } |
927aa2e7 JK |
5372 | break; |
5373 | case FUNCTIONS_DOMAIN: | |
5374 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5375 | { |
927aa2e7 JK |
5376 | case DW_TAG_subprogram: |
5377 | break; | |
5378 | default: | |
5379 | goto again; | |
4b514bc8 | 5380 | } |
927aa2e7 JK |
5381 | break; |
5382 | case TYPES_DOMAIN: | |
5383 | switch (indexval.dwarf_tag) | |
5384 | { | |
5385 | case DW_TAG_typedef: | |
5386 | case DW_TAG_structure_type: | |
5387 | break; | |
5388 | default: | |
5389 | goto again; | |
5390 | } | |
5391 | break; | |
59c35742 AB |
5392 | case MODULES_DOMAIN: |
5393 | switch (indexval.dwarf_tag) | |
5394 | { | |
5395 | case DW_TAG_module: | |
5396 | break; | |
5397 | default: | |
5398 | goto again; | |
5399 | } | |
927aa2e7 JK |
5400 | default: |
5401 | break; | |
4b514bc8 | 5402 | } |
927aa2e7 JK |
5403 | |
5404 | return per_cu; | |
4b514bc8 | 5405 | } |
61920122 | 5406 | |
927aa2e7 | 5407 | static struct compunit_symtab * |
c7f839cb | 5408 | dw2_debug_names_lookup_symbol (struct objfile *objfile, block_enum block_index, |
927aa2e7 | 5409 | const char *name, domain_enum domain) |
4b514bc8 | 5410 | { |
ed2dc618 SM |
5411 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5412 | = get_dwarf2_per_objfile (objfile); | |
61920122 | 5413 | |
927aa2e7 JK |
5414 | const auto &mapp = dwarf2_per_objfile->debug_names_table; |
5415 | if (!mapp) | |
61920122 | 5416 | { |
927aa2e7 JK |
5417 | /* index is NULL if OBJF_READNOW. */ |
5418 | return NULL; | |
5419 | } | |
5420 | const auto &map = *mapp; | |
9291a0cd | 5421 | |
2b79f376 | 5422 | dw2_debug_names_iterator iter (map, block_index, domain, name); |
9703b513 | 5423 | |
927aa2e7 JK |
5424 | struct compunit_symtab *stab_best = NULL; |
5425 | struct dwarf2_per_cu_data *per_cu; | |
5426 | while ((per_cu = iter.next ()) != NULL) | |
5427 | { | |
5428 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 5429 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
927aa2e7 | 5430 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 5431 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 5432 | |
927aa2e7 JK |
5433 | sym = block_find_symbol (block, name, domain, |
5434 | block_find_non_opaque_type_preferred, | |
5435 | &with_opaque); | |
9703b513 | 5436 | |
927aa2e7 JK |
5437 | /* Some caution must be observed with overloaded functions and |
5438 | methods, since the index will not contain any overload | |
5439 | information (but NAME might contain it). */ | |
a3ec0bb1 | 5440 | |
927aa2e7 | 5441 | if (sym != NULL |
987012b8 | 5442 | && strcmp_iw (sym->search_name (), name) == 0) |
927aa2e7 JK |
5443 | return stab; |
5444 | if (with_opaque != NULL | |
987012b8 | 5445 | && strcmp_iw (with_opaque->search_name (), name) == 0) |
927aa2e7 | 5446 | stab_best = stab; |
9703b513 | 5447 | |
927aa2e7 | 5448 | /* Keep looking through other CUs. */ |
9703b513 TT |
5449 | } |
5450 | ||
927aa2e7 | 5451 | return stab_best; |
9703b513 TT |
5452 | } |
5453 | ||
927aa2e7 JK |
5454 | /* This dumps minimal information about .debug_names. It is called |
5455 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5456 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5457 | |
927aa2e7 JK |
5458 | static void |
5459 | dw2_debug_names_dump (struct objfile *objfile) | |
5460 | { | |
ed2dc618 SM |
5461 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5462 | = get_dwarf2_per_objfile (objfile); | |
5463 | ||
927aa2e7 JK |
5464 | gdb_assert (dwarf2_per_objfile->using_index); |
5465 | printf_filtered (".debug_names:"); | |
5466 | if (dwarf2_per_objfile->debug_names_table) | |
5467 | printf_filtered (" exists\n"); | |
5468 | else | |
5469 | printf_filtered (" faked for \"readnow\"\n"); | |
5470 | printf_filtered ("\n"); | |
9291a0cd TT |
5471 | } |
5472 | ||
9291a0cd | 5473 | static void |
927aa2e7 JK |
5474 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
5475 | const char *func_name) | |
9291a0cd | 5476 | { |
ed2dc618 SM |
5477 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5478 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 5479 | |
927aa2e7 JK |
5480 | /* dwarf2_per_objfile->debug_names_table is NULL if OBJF_READNOW. */ |
5481 | if (dwarf2_per_objfile->debug_names_table) | |
24c79950 | 5482 | { |
927aa2e7 | 5483 | const mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
24c79950 | 5484 | |
2b79f376 | 5485 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name); |
24c79950 | 5486 | |
927aa2e7 JK |
5487 | struct dwarf2_per_cu_data *per_cu; |
5488 | while ((per_cu = iter.next ()) != NULL) | |
58f0c718 | 5489 | dw2_instantiate_symtab (per_cu, false); |
927aa2e7 JK |
5490 | } |
5491 | } | |
24c79950 | 5492 | |
3b00ef10 TT |
5493 | static void |
5494 | dw2_debug_names_map_matching_symbols | |
5495 | (struct objfile *objfile, | |
5496 | const lookup_name_info &name, domain_enum domain, | |
5497 | int global, | |
5498 | gdb::function_view<symbol_found_callback_ftype> callback, | |
5499 | symbol_compare_ftype *ordered_compare) | |
5500 | { | |
5501 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
5502 | = get_dwarf2_per_objfile (objfile); | |
5503 | ||
5504 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
5505 | if (!dwarf2_per_objfile->debug_names_table) | |
5506 | return; | |
5507 | ||
5508 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; | |
5509 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; | |
5510 | ||
5511 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5512 | auto matcher = [&] (const char *symname) | |
5513 | { | |
5514 | if (ordered_compare == nullptr) | |
5515 | return true; | |
5516 | return ordered_compare (symname, match_name) == 0; | |
5517 | }; | |
5518 | ||
5519 | dw2_expand_symtabs_matching_symbol (map, name, matcher, ALL_DOMAIN, | |
5520 | [&] (offset_type namei) | |
5521 | { | |
5522 | /* The name was matched, now expand corresponding CUs that were | |
5523 | marked. */ | |
5524 | dw2_debug_names_iterator iter (map, block_kind, domain, namei); | |
5525 | ||
5526 | struct dwarf2_per_cu_data *per_cu; | |
5527 | while ((per_cu = iter.next ()) != NULL) | |
5528 | dw2_expand_symtabs_matching_one (per_cu, nullptr, nullptr); | |
5529 | return true; | |
5530 | }); | |
5531 | ||
5532 | /* It's a shame we couldn't do this inside the | |
5533 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
5534 | that have already been expanded. Instead, this loop matches what | |
5535 | the psymtab code does. */ | |
5536 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) | |
5537 | { | |
5538 | struct compunit_symtab *cust = per_cu->v.quick->compunit_symtab; | |
5539 | if (cust != nullptr) | |
5540 | { | |
5541 | const struct block *block | |
5542 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
5543 | if (!iterate_over_symbols_terminated (block, name, | |
5544 | domain, callback)) | |
5545 | break; | |
5546 | } | |
5547 | } | |
5548 | } | |
5549 | ||
927aa2e7 JK |
5550 | static void |
5551 | dw2_debug_names_expand_symtabs_matching | |
5552 | (struct objfile *objfile, | |
5553 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5554 | const lookup_name_info &lookup_name, | |
5555 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
5556 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5557 | enum search_domain kind) | |
5558 | { | |
ed2dc618 SM |
5559 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5560 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 5561 | |
927aa2e7 JK |
5562 | /* debug_names_table is NULL if OBJF_READNOW. */ |
5563 | if (!dwarf2_per_objfile->debug_names_table) | |
5564 | return; | |
9291a0cd | 5565 | |
ed2dc618 | 5566 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
24c79950 | 5567 | |
44ed8f3e | 5568 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
bbf2f4df | 5569 | |
44ed8f3e PA |
5570 | dw2_expand_symtabs_matching_symbol (map, lookup_name, |
5571 | symbol_matcher, | |
5572 | kind, [&] (offset_type namei) | |
927aa2e7 | 5573 | { |
927aa2e7 JK |
5574 | /* The name was matched, now expand corresponding CUs that were |
5575 | marked. */ | |
5576 | dw2_debug_names_iterator iter (map, kind, namei); | |
bbf2f4df | 5577 | |
927aa2e7 JK |
5578 | struct dwarf2_per_cu_data *per_cu; |
5579 | while ((per_cu = iter.next ()) != NULL) | |
5580 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, | |
5581 | expansion_notify); | |
3b00ef10 | 5582 | return true; |
44ed8f3e | 5583 | }); |
9291a0cd TT |
5584 | } |
5585 | ||
927aa2e7 | 5586 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
5587 | { |
5588 | dw2_has_symbols, | |
5589 | dw2_find_last_source_symtab, | |
5590 | dw2_forget_cached_source_info, | |
f8eba3c6 | 5591 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 5592 | dw2_debug_names_lookup_symbol, |
9291a0cd | 5593 | dw2_print_stats, |
927aa2e7 | 5594 | dw2_debug_names_dump, |
927aa2e7 | 5595 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 5596 | dw2_expand_all_symtabs, |
652a8996 | 5597 | dw2_expand_symtabs_with_fullname, |
3b00ef10 | 5598 | dw2_debug_names_map_matching_symbols, |
927aa2e7 | 5599 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 5600 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 5601 | NULL, |
9291a0cd TT |
5602 | dw2_map_symbol_filenames |
5603 | }; | |
5604 | ||
4485a1c1 SM |
5605 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5606 | to either a dwarf2_per_objfile or dwz_file object. */ | |
5607 | ||
5608 | template <typename T> | |
5609 | static gdb::array_view<const gdb_byte> | |
5610 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
5611 | { | |
5612 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
5613 | ||
96b79293 | 5614 | if (section->empty ()) |
4485a1c1 SM |
5615 | return {}; |
5616 | ||
5617 | /* Older elfutils strip versions could keep the section in the main | |
5618 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5619 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
5620 | return {}; |
5621 | ||
96b79293 | 5622 | section->read (obj); |
4485a1c1 | 5623 | |
8bebfcda PA |
5624 | /* dwarf2_section_info::size is a bfd_size_type, while |
5625 | gdb::array_view works with size_t. On 32-bit hosts, with | |
5626 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
5627 | is 32-bit. So we need an explicit narrowing conversion here. | |
5628 | This is fine, because it's impossible to allocate or mmap an | |
5629 | array/buffer larger than what size_t can represent. */ | |
5630 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
5631 | } |
5632 | ||
87d6a7aa SM |
5633 | /* Lookup the index cache for the contents of the index associated to |
5634 | DWARF2_OBJ. */ | |
5635 | ||
5636 | static gdb::array_view<const gdb_byte> | |
5637 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_objfile *dwarf2_obj) | |
5638 | { | |
5639 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
5640 | if (build_id == nullptr) | |
5641 | return {}; | |
5642 | ||
5643 | return global_index_cache.lookup_gdb_index (build_id, | |
5644 | &dwarf2_obj->index_cache_res); | |
5645 | } | |
5646 | ||
5647 | /* Same as the above, but for DWZ. */ | |
5648 | ||
5649 | static gdb::array_view<const gdb_byte> | |
5650 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
5651 | { | |
5652 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
5653 | if (build_id == nullptr) | |
5654 | return {}; | |
5655 | ||
5656 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
5657 | } | |
5658 | ||
3c0aa29a | 5659 | /* See symfile.h. */ |
9291a0cd | 5660 | |
3c0aa29a PA |
5661 | bool |
5662 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 5663 | { |
ed2dc618 SM |
5664 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5665 | = get_dwarf2_per_objfile (objfile); | |
5666 | ||
9291a0cd TT |
5667 | /* If we're about to read full symbols, don't bother with the |
5668 | indices. In this case we also don't care if some other debug | |
5669 | format is making psymtabs, because they are all about to be | |
5670 | expanded anyway. */ | |
5671 | if ((objfile->flags & OBJF_READNOW)) | |
5672 | { | |
9291a0cd | 5673 | dwarf2_per_objfile->using_index = 1; |
ed2dc618 SM |
5674 | create_all_comp_units (dwarf2_per_objfile); |
5675 | create_all_type_units (dwarf2_per_objfile); | |
b76e467d SM |
5676 | dwarf2_per_objfile->quick_file_names_table |
5677 | = create_quick_file_names_table | |
5678 | (dwarf2_per_objfile->all_comp_units.size ()); | |
9291a0cd | 5679 | |
b76e467d | 5680 | for (int i = 0; i < (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 5681 | + dwarf2_per_objfile->all_type_units.size ()); ++i) |
9291a0cd | 5682 | { |
ff4c9fec | 5683 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 5684 | |
e254ef6a DE |
5685 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
5686 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
5687 | } |
5688 | ||
5689 | /* Return 1 so that gdb sees the "quick" functions. However, | |
5690 | these functions will be no-ops because we will have expanded | |
5691 | all symtabs. */ | |
3c0aa29a PA |
5692 | *index_kind = dw_index_kind::GDB_INDEX; |
5693 | return true; | |
9291a0cd TT |
5694 | } |
5695 | ||
ed2dc618 | 5696 | if (dwarf2_read_debug_names (dwarf2_per_objfile)) |
3c0aa29a PA |
5697 | { |
5698 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
5699 | return true; | |
5700 | } | |
927aa2e7 | 5701 | |
4485a1c1 SM |
5702 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, |
5703 | get_gdb_index_contents_from_section<struct dwarf2_per_objfile>, | |
5704 | get_gdb_index_contents_from_section<dwz_file>)) | |
3c0aa29a PA |
5705 | { |
5706 | *index_kind = dw_index_kind::GDB_INDEX; | |
5707 | return true; | |
5708 | } | |
9291a0cd | 5709 | |
87d6a7aa SM |
5710 | /* ... otherwise, try to find the index in the index cache. */ |
5711 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, | |
5712 | get_gdb_index_contents_from_cache, | |
5713 | get_gdb_index_contents_from_cache_dwz)) | |
5714 | { | |
5715 | global_index_cache.hit (); | |
5716 | *index_kind = dw_index_kind::GDB_INDEX; | |
5717 | return true; | |
5718 | } | |
5719 | ||
5720 | global_index_cache.miss (); | |
3c0aa29a | 5721 | return false; |
9291a0cd TT |
5722 | } |
5723 | ||
5724 | \f | |
5725 | ||
dce234bc PP |
5726 | /* Build a partial symbol table. */ |
5727 | ||
5728 | void | |
f29dff0a | 5729 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 5730 | { |
ed2dc618 SM |
5731 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5732 | = get_dwarf2_per_objfile (objfile); | |
c9bf0622 | 5733 | |
6eee24ce | 5734 | init_psymbol_list (objfile, 1024); |
c906108c | 5735 | |
a70b8144 | 5736 | try |
c9bf0622 TT |
5737 | { |
5738 | /* This isn't really ideal: all the data we allocate on the | |
5739 | objfile's obstack is still uselessly kept around. However, | |
5740 | freeing it seems unsafe. */ | |
906768f9 | 5741 | psymtab_discarder psymtabs (objfile); |
ed2dc618 | 5742 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile); |
906768f9 | 5743 | psymtabs.keep (); |
87d6a7aa SM |
5744 | |
5745 | /* (maybe) store an index in the cache. */ | |
5746 | global_index_cache.store (dwarf2_per_objfile); | |
c9bf0622 | 5747 | } |
230d2906 | 5748 | catch (const gdb_exception_error &except) |
492d29ea PA |
5749 | { |
5750 | exception_print (gdb_stderr, except); | |
5751 | } | |
c906108c | 5752 | } |
c906108c | 5753 | |
3b80fe9b DE |
5754 | /* Find the base address of the compilation unit for range lists and |
5755 | location lists. It will normally be specified by DW_AT_low_pc. | |
5756 | In DWARF-3 draft 4, the base address could be overridden by | |
5757 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
5758 | compilation units with discontinuous ranges. */ | |
5759 | ||
5760 | static void | |
5761 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
5762 | { | |
5763 | struct attribute *attr; | |
5764 | ||
2b24b6e4 | 5765 | cu->base_address.reset (); |
3b80fe9b DE |
5766 | |
5767 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 5768 | if (attr != nullptr) |
2b24b6e4 | 5769 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
5770 | else |
5771 | { | |
5772 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 5773 | if (attr != nullptr) |
2b24b6e4 | 5774 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
5775 | } |
5776 | } | |
5777 | ||
36586728 TT |
5778 | /* Helper function that returns the proper abbrev section for |
5779 | THIS_CU. */ | |
5780 | ||
5781 | static struct dwarf2_section_info * | |
5782 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
5783 | { | |
5784 | struct dwarf2_section_info *abbrev; | |
ed2dc618 | 5785 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
36586728 TT |
5786 | |
5787 | if (this_cu->is_dwz) | |
ed2dc618 | 5788 | abbrev = &dwarf2_get_dwz_file (dwarf2_per_objfile)->abbrev; |
36586728 TT |
5789 | else |
5790 | abbrev = &dwarf2_per_objfile->abbrev; | |
5791 | ||
5792 | return abbrev; | |
5793 | } | |
5794 | ||
f4dc4d17 DE |
5795 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
5796 | ||
5797 | static sect_offset | |
ed2dc618 SM |
5798 | read_abbrev_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
5799 | struct dwarf2_section_info *section, | |
9c541725 | 5800 | sect_offset sect_off) |
f4dc4d17 | 5801 | { |
96b79293 | 5802 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 5803 | const gdb_byte *info_ptr; |
ac298888 | 5804 | unsigned int initial_length_size, offset_size; |
43988095 | 5805 | uint16_t version; |
f4dc4d17 | 5806 | |
96b79293 | 5807 | section->read (dwarf2_per_objfile->objfile); |
9c541725 | 5808 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 5809 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 5810 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
5811 | info_ptr += initial_length_size; |
5812 | ||
5813 | version = read_2_bytes (abfd, info_ptr); | |
5814 | info_ptr += 2; | |
5815 | if (version >= 5) | |
5816 | { | |
5817 | /* Skip unit type and address size. */ | |
5818 | info_ptr += 2; | |
5819 | } | |
5820 | ||
24aa364d | 5821 | return (sect_offset) read_offset (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
5822 | } |
5823 | ||
b83470bf TT |
5824 | /* A partial symtab that is used only for include files. */ |
5825 | struct dwarf2_include_psymtab : public partial_symtab | |
5826 | { | |
5827 | dwarf2_include_psymtab (const char *filename, struct objfile *objfile) | |
5828 | : partial_symtab (filename, objfile) | |
5829 | { | |
5830 | } | |
5831 | ||
5832 | void read_symtab (struct objfile *objfile) override | |
5833 | { | |
5834 | expand_psymtab (objfile); | |
5835 | } | |
5836 | ||
5837 | void expand_psymtab (struct objfile *objfile) override | |
5838 | { | |
5839 | if (m_readin) | |
5840 | return; | |
5841 | /* It's an include file, no symbols to read for it. | |
5842 | Everything is in the parent symtab. */ | |
5843 | read_dependencies (objfile); | |
5844 | m_readin = true; | |
5845 | } | |
5846 | ||
5847 | bool readin_p () const override | |
5848 | { | |
5849 | return m_readin; | |
5850 | } | |
5851 | ||
5852 | struct compunit_symtab *get_compunit_symtab () const override | |
5853 | { | |
5854 | return nullptr; | |
5855 | } | |
5856 | ||
5857 | private: | |
5858 | ||
5859 | bool m_readin = false; | |
5860 | }; | |
5861 | ||
aaa75496 JB |
5862 | /* Allocate a new partial symtab for file named NAME and mark this new |
5863 | partial symtab as being an include of PST. */ | |
5864 | ||
5865 | static void | |
891813be | 5866 | dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst, |
aaa75496 JB |
5867 | struct objfile *objfile) |
5868 | { | |
b83470bf | 5869 | dwarf2_include_psymtab *subpst = new dwarf2_include_psymtab (name, objfile); |
aaa75496 | 5870 | |
fbd9ab74 JK |
5871 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
5872 | { | |
5873 | /* It shares objfile->objfile_obstack. */ | |
5874 | subpst->dirname = pst->dirname; | |
5875 | } | |
5876 | ||
a9342b62 | 5877 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
5878 | subpst->dependencies[0] = pst; |
5879 | subpst->number_of_dependencies = 1; | |
aaa75496 JB |
5880 | } |
5881 | ||
5882 | /* Read the Line Number Program data and extract the list of files | |
5883 | included by the source file represented by PST. Build an include | |
d85a05f0 | 5884 | partial symtab for each of these included files. */ |
aaa75496 JB |
5885 | |
5886 | static void | |
5887 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 5888 | struct die_info *die, |
891813be | 5889 | dwarf2_psymtab *pst) |
aaa75496 | 5890 | { |
fff8551c | 5891 | line_header_up lh; |
d85a05f0 | 5892 | struct attribute *attr; |
aaa75496 | 5893 | |
d85a05f0 | 5894 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
435d3d88 | 5895 | if (attr != nullptr) |
9c541725 | 5896 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
5897 | if (lh == NULL) |
5898 | return; /* No linetable, so no includes. */ | |
5899 | ||
79748972 TT |
5900 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
5901 | that we pass in the raw text_low here; that is ok because we're | |
5902 | only decoding the line table to make include partial symtabs, and | |
5903 | so the addresses aren't really used. */ | |
4ae976d1 | 5904 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 5905 | pst->raw_text_low (), 1); |
aaa75496 JB |
5906 | } |
5907 | ||
348e048f | 5908 | static hashval_t |
52dc124a | 5909 | hash_signatured_type (const void *item) |
348e048f | 5910 | { |
9a3c8263 SM |
5911 | const struct signatured_type *sig_type |
5912 | = (const struct signatured_type *) item; | |
9a619af0 | 5913 | |
348e048f | 5914 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 5915 | return sig_type->signature; |
348e048f DE |
5916 | } |
5917 | ||
5918 | static int | |
52dc124a | 5919 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 5920 | { |
9a3c8263 SM |
5921 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
5922 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 5923 | |
348e048f DE |
5924 | return lhs->signature == rhs->signature; |
5925 | } | |
5926 | ||
1fd400ff TT |
5927 | /* Allocate a hash table for signatured types. */ |
5928 | ||
b0b6a987 | 5929 | static htab_up |
298e9637 | 5930 | allocate_signatured_type_table () |
1fd400ff | 5931 | { |
b0b6a987 TT |
5932 | return htab_up (htab_create_alloc (41, |
5933 | hash_signatured_type, | |
5934 | eq_signatured_type, | |
5935 | NULL, xcalloc, xfree)); | |
1fd400ff TT |
5936 | } |
5937 | ||
d467dd73 | 5938 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
5939 | |
5940 | static int | |
d467dd73 | 5941 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 5942 | { |
9a3c8263 | 5943 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
5944 | std::vector<signatured_type *> *all_type_units |
5945 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 5946 | |
b2bdb8cf | 5947 | all_type_units->push_back (sigt); |
1fd400ff TT |
5948 | |
5949 | return 1; | |
5950 | } | |
5951 | ||
78d4d2c5 | 5952 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
5953 | and fill them into TYPES_HTAB. It will process only type units, |
5954 | therefore DW_UT_type. */ | |
c88ee1f0 | 5955 | |
78d4d2c5 | 5956 | static void |
ed2dc618 SM |
5957 | create_debug_type_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
5958 | struct dwo_file *dwo_file, | |
b0b6a987 | 5959 | dwarf2_section_info *section, htab_up &types_htab, |
43988095 | 5960 | rcuh_kind section_kind) |
348e048f | 5961 | { |
3019eac3 | 5962 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 5963 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
5964 | bfd *abfd; |
5965 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 5966 | |
4bdcc0c1 DE |
5967 | abbrev_section = (dwo_file != NULL |
5968 | ? &dwo_file->sections.abbrev | |
5969 | : &dwarf2_per_objfile->abbrev); | |
5970 | ||
b4f54984 | 5971 | if (dwarf_read_debug) |
43988095 | 5972 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
96b79293 TT |
5973 | section->get_name (), |
5974 | abbrev_section->get_file_name ()); | |
09406207 | 5975 | |
96b79293 | 5976 | section->read (objfile); |
78d4d2c5 | 5977 | info_ptr = section->buffer; |
348e048f | 5978 | |
78d4d2c5 JK |
5979 | if (info_ptr == NULL) |
5980 | return; | |
348e048f | 5981 | |
78d4d2c5 JK |
5982 | /* We can't set abfd until now because the section may be empty or |
5983 | not present, in which case the bfd is unknown. */ | |
96b79293 | 5984 | abfd = section->get_bfd_owner (); |
348e048f | 5985 | |
c0ab21c2 TT |
5986 | /* We don't use cutu_reader here because we don't need to read |
5987 | any dies: the signature is in the header. */ | |
3019eac3 | 5988 | |
78d4d2c5 JK |
5989 | end_ptr = info_ptr + section->size; |
5990 | while (info_ptr < end_ptr) | |
5991 | { | |
78d4d2c5 JK |
5992 | struct signatured_type *sig_type; |
5993 | struct dwo_unit *dwo_tu; | |
5994 | void **slot; | |
5995 | const gdb_byte *ptr = info_ptr; | |
5996 | struct comp_unit_head header; | |
5997 | unsigned int length; | |
8b70b953 | 5998 | |
9c541725 | 5999 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6000 | |
a49dd8dd JK |
6001 | /* Initialize it due to a false compiler warning. */ |
6002 | header.signature = -1; | |
9c541725 | 6003 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6004 | |
78d4d2c5 JK |
6005 | /* We need to read the type's signature in order to build the hash |
6006 | table, but we don't need anything else just yet. */ | |
348e048f | 6007 | |
ed2dc618 | 6008 | ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, &header, section, |
43988095 | 6009 | abbrev_section, ptr, section_kind); |
348e048f | 6010 | |
4057dfde | 6011 | length = header.get_length (); |
6caca83c | 6012 | |
78d4d2c5 JK |
6013 | /* Skip dummy type units. */ |
6014 | if (ptr >= info_ptr + length | |
43988095 JK |
6015 | || peek_abbrev_code (abfd, ptr) == 0 |
6016 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
6017 | { |
6018 | info_ptr += length; | |
6019 | continue; | |
6020 | } | |
dee91e82 | 6021 | |
78d4d2c5 JK |
6022 | if (types_htab == NULL) |
6023 | { | |
6024 | if (dwo_file) | |
298e9637 | 6025 | types_htab = allocate_dwo_unit_table (); |
78d4d2c5 | 6026 | else |
298e9637 | 6027 | types_htab = allocate_signatured_type_table (); |
78d4d2c5 | 6028 | } |
8b70b953 | 6029 | |
78d4d2c5 JK |
6030 | if (dwo_file) |
6031 | { | |
6032 | sig_type = NULL; | |
6033 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6034 | struct dwo_unit); | |
6035 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 6036 | dwo_tu->signature = header.signature; |
9c541725 | 6037 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6038 | dwo_tu->section = section; |
9c541725 | 6039 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6040 | dwo_tu->length = length; |
6041 | } | |
6042 | else | |
6043 | { | |
6044 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6045 | The real type_offset is in the DWO file. */ | |
6046 | dwo_tu = NULL; | |
6047 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6048 | struct signatured_type); | |
43988095 | 6049 | sig_type->signature = header.signature; |
9c541725 | 6050 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
e3b94546 | 6051 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
78d4d2c5 JK |
6052 | sig_type->per_cu.is_debug_types = 1; |
6053 | sig_type->per_cu.section = section; | |
9c541725 | 6054 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6055 | sig_type->per_cu.length = length; |
6056 | } | |
6057 | ||
b0b6a987 | 6058 | slot = htab_find_slot (types_htab.get (), |
78d4d2c5 JK |
6059 | dwo_file ? (void*) dwo_tu : (void *) sig_type, |
6060 | INSERT); | |
6061 | gdb_assert (slot != NULL); | |
6062 | if (*slot != NULL) | |
6063 | { | |
9c541725 | 6064 | sect_offset dup_sect_off; |
0349ea22 | 6065 | |
3019eac3 DE |
6066 | if (dwo_file) |
6067 | { | |
78d4d2c5 JK |
6068 | const struct dwo_unit *dup_tu |
6069 | = (const struct dwo_unit *) *slot; | |
6070 | ||
9c541725 | 6071 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6072 | } |
6073 | else | |
6074 | { | |
78d4d2c5 JK |
6075 | const struct signatured_type *dup_tu |
6076 | = (const struct signatured_type *) *slot; | |
6077 | ||
9c541725 | 6078 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6079 | } |
8b70b953 | 6080 | |
b98664d3 | 6081 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6082 | " the entry at offset %s, signature %s"), |
6083 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6084 | hex_string (header.signature)); |
78d4d2c5 JK |
6085 | } |
6086 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6087 | |
78d4d2c5 | 6088 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6089 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6090 | sect_offset_str (sect_off), | |
43988095 | 6091 | hex_string (header.signature)); |
3019eac3 | 6092 | |
78d4d2c5 JK |
6093 | info_ptr += length; |
6094 | } | |
6095 | } | |
3019eac3 | 6096 | |
78d4d2c5 JK |
6097 | /* Create the hash table of all entries in the .debug_types |
6098 | (or .debug_types.dwo) section(s). | |
6099 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6100 | otherwise it is NULL. | |
b3c8eb43 | 6101 | |
78d4d2c5 | 6102 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6103 | |
78d4d2c5 | 6104 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6105 | |
78d4d2c5 | 6106 | static void |
ed2dc618 SM |
6107 | create_debug_types_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6108 | struct dwo_file *dwo_file, | |
fd5866f6 | 6109 | gdb::array_view<dwarf2_section_info> type_sections, |
b0b6a987 | 6110 | htab_up &types_htab) |
78d4d2c5 | 6111 | { |
fd5866f6 SM |
6112 | for (dwarf2_section_info §ion : type_sections) |
6113 | create_debug_type_hash_table (dwarf2_per_objfile, dwo_file, §ion, | |
ed2dc618 | 6114 | types_htab, rcuh_kind::TYPE); |
3019eac3 DE |
6115 | } |
6116 | ||
6117 | /* Create the hash table of all entries in the .debug_types section, | |
6118 | and initialize all_type_units. | |
6119 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6120 | otherwise non-zero. */ | |
6121 | ||
6122 | static int | |
ed2dc618 | 6123 | create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
3019eac3 | 6124 | { |
b0b6a987 | 6125 | htab_up types_htab; |
3019eac3 | 6126 | |
ed2dc618 SM |
6127 | create_debug_type_hash_table (dwarf2_per_objfile, NULL, |
6128 | &dwarf2_per_objfile->info, types_htab, | |
43988095 | 6129 | rcuh_kind::COMPILE); |
ed2dc618 SM |
6130 | create_debug_types_hash_table (dwarf2_per_objfile, NULL, |
6131 | dwarf2_per_objfile->types, types_htab); | |
3019eac3 DE |
6132 | if (types_htab == NULL) |
6133 | { | |
6134 | dwarf2_per_objfile->signatured_types = NULL; | |
6135 | return 0; | |
6136 | } | |
6137 | ||
b0b6a987 | 6138 | dwarf2_per_objfile->signatured_types = std::move (types_htab); |
348e048f | 6139 | |
b2bdb8cf | 6140 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
b0b6a987 TT |
6141 | dwarf2_per_objfile->all_type_units.reserve |
6142 | (htab_elements (dwarf2_per_objfile->signatured_types.get ())); | |
b2bdb8cf | 6143 | |
b0b6a987 TT |
6144 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types.get (), |
6145 | add_signatured_type_cu_to_table, | |
b2bdb8cf | 6146 | &dwarf2_per_objfile->all_type_units); |
1fd400ff | 6147 | |
348e048f DE |
6148 | return 1; |
6149 | } | |
6150 | ||
6aa5f3a6 DE |
6151 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
6152 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
6153 | Otherwise we find one. */ | |
6154 | ||
6155 | static struct signatured_type * | |
ed2dc618 SM |
6156 | add_type_unit (struct dwarf2_per_objfile *dwarf2_per_objfile, ULONGEST sig, |
6157 | void **slot) | |
6aa5f3a6 DE |
6158 | { |
6159 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6aa5f3a6 | 6160 | |
b2bdb8cf SM |
6161 | if (dwarf2_per_objfile->all_type_units.size () |
6162 | == dwarf2_per_objfile->all_type_units.capacity ()) | |
6163 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6164 | |
b2bdb8cf SM |
6165 | signatured_type *sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6166 | struct signatured_type); | |
6167 | ||
6168 | dwarf2_per_objfile->all_type_units.push_back (sig_type); | |
6aa5f3a6 DE |
6169 | sig_type->signature = sig; |
6170 | sig_type->per_cu.is_debug_types = 1; | |
6171 | if (dwarf2_per_objfile->using_index) | |
6172 | { | |
6173 | sig_type->per_cu.v.quick = | |
6174 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6175 | struct dwarf2_per_cu_quick_data); | |
6176 | } | |
6177 | ||
6178 | if (slot == NULL) | |
6179 | { | |
b0b6a987 | 6180 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types.get (), |
6aa5f3a6 DE |
6181 | sig_type, INSERT); |
6182 | } | |
6183 | gdb_assert (*slot == NULL); | |
6184 | *slot = sig_type; | |
6185 | /* The rest of sig_type must be filled in by the caller. */ | |
6186 | return sig_type; | |
6187 | } | |
6188 | ||
a2ce51a0 DE |
6189 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6190 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6191 | ||
6192 | static void | |
ed2dc618 | 6193 | fill_in_sig_entry_from_dwo_entry (struct dwarf2_per_objfile *dwarf2_per_objfile, |
a2ce51a0 DE |
6194 | struct signatured_type *sig_entry, |
6195 | struct dwo_unit *dwo_entry) | |
6196 | { | |
7ee85ab1 | 6197 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
6198 | gdb_assert (! sig_entry->per_cu.queued); |
6199 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
6200 | if (dwarf2_per_objfile->using_index) |
6201 | { | |
6202 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 6203 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
6204 | } |
6205 | else | |
6206 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6207 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6208 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6209 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6210 | gdb_assert (sig_entry->dwo_unit == NULL); |
6211 | ||
6212 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6213 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6214 | sig_entry->per_cu.length = dwo_entry->length; |
6215 | sig_entry->per_cu.reading_dwo_directly = 1; | |
e3b94546 | 6216 | sig_entry->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
a2ce51a0 DE |
6217 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6218 | sig_entry->dwo_unit = dwo_entry; | |
6219 | } | |
6220 | ||
6221 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6222 | If we haven't read the TU yet, create the signatured_type data structure |
6223 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6224 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6225 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6226 | containing that CU. Otherwise we could end up reading several other DWO | |
6227 | files (due to comdat folding) to process the transitive closure of all the | |
6228 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6229 | type signature that it needs. | |
a2ce51a0 DE |
6230 | We only do this for .gdb_index because in the psymtab case we already have |
6231 | to read all the DWOs to build the type unit groups. */ | |
6232 | ||
6233 | static struct signatured_type * | |
6234 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6235 | { | |
518817b3 SM |
6236 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6237 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 DE |
6238 | struct dwo_file *dwo_file; |
6239 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6240 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6241 | void **slot; |
a2ce51a0 DE |
6242 | |
6243 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
6244 | ||
6aa5f3a6 DE |
6245 | /* If TU skeletons have been removed then we may not have read in any |
6246 | TUs yet. */ | |
6247 | if (dwarf2_per_objfile->signatured_types == NULL) | |
298e9637 | 6248 | dwarf2_per_objfile->signatured_types = allocate_signatured_type_table (); |
a2ce51a0 DE |
6249 | |
6250 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6251 | Use the global signatured_types array to do our own comdat-folding |
6252 | of types. If this is the first time we're reading this TU, and | |
6253 | the TU has an entry in .gdb_index, replace the recorded data from | |
6254 | .gdb_index with this TU. */ | |
a2ce51a0 | 6255 | |
a2ce51a0 | 6256 | find_sig_entry.signature = sig; |
b0b6a987 | 6257 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types.get (), |
6aa5f3a6 | 6258 | &find_sig_entry, INSERT); |
9a3c8263 | 6259 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6260 | |
6261 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6262 | read. Don't reassign the global entry to point to this DWO if that's |
6263 | the case. Also note that if the TU is already being read, it may not | |
6264 | have come from a DWO, the program may be a mix of Fission-compiled | |
6265 | code and non-Fission-compiled code. */ | |
6266 | ||
6267 | /* Have we already tried to read this TU? | |
6268 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6269 | needn't exist in the global table yet). */ | |
6270 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6271 | return sig_entry; |
6272 | ||
6aa5f3a6 DE |
6273 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6274 | dwo_unit of the TU itself. */ | |
6275 | dwo_file = cu->dwo_unit->dwo_file; | |
6276 | ||
a2ce51a0 DE |
6277 | /* Ok, this is the first time we're reading this TU. */ |
6278 | if (dwo_file->tus == NULL) | |
6279 | return NULL; | |
6280 | find_dwo_entry.signature = sig; | |
b0b6a987 TT |
6281 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
6282 | &find_dwo_entry); | |
a2ce51a0 DE |
6283 | if (dwo_entry == NULL) |
6284 | return NULL; | |
6285 | ||
6aa5f3a6 DE |
6286 | /* If the global table doesn't have an entry for this TU, add one. */ |
6287 | if (sig_entry == NULL) | |
ed2dc618 | 6288 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6aa5f3a6 | 6289 | |
ed2dc618 | 6290 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6291 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6292 | return sig_entry; |
6293 | } | |
6294 | ||
a2ce51a0 DE |
6295 | /* Subroutine of lookup_signatured_type. |
6296 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6297 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6298 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6299 | |
6300 | static struct signatured_type * | |
6301 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6302 | { | |
518817b3 SM |
6303 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6304 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 6305 | struct dwp_file *dwp_file = get_dwp_file (dwarf2_per_objfile); |
a2ce51a0 DE |
6306 | struct dwo_unit *dwo_entry; |
6307 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6308 | void **slot; |
a2ce51a0 DE |
6309 | |
6310 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
6311 | gdb_assert (dwp_file != NULL); | |
6312 | ||
6aa5f3a6 DE |
6313 | /* If TU skeletons have been removed then we may not have read in any |
6314 | TUs yet. */ | |
6315 | if (dwarf2_per_objfile->signatured_types == NULL) | |
298e9637 | 6316 | dwarf2_per_objfile->signatured_types = allocate_signatured_type_table (); |
a2ce51a0 | 6317 | |
6aa5f3a6 | 6318 | find_sig_entry.signature = sig; |
b0b6a987 | 6319 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types.get (), |
6aa5f3a6 | 6320 | &find_sig_entry, INSERT); |
9a3c8263 | 6321 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6322 | |
6323 | /* Have we already tried to read this TU? | |
6324 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6325 | needn't exist in the global table yet). */ | |
6326 | if (sig_entry != NULL) | |
6327 | return sig_entry; | |
6328 | ||
a2ce51a0 DE |
6329 | if (dwp_file->tus == NULL) |
6330 | return NULL; | |
ed2dc618 | 6331 | dwo_entry = lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, NULL, |
57d63ce2 | 6332 | sig, 1 /* is_debug_types */); |
a2ce51a0 DE |
6333 | if (dwo_entry == NULL) |
6334 | return NULL; | |
6335 | ||
ed2dc618 SM |
6336 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6337 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6338 | |
a2ce51a0 DE |
6339 | return sig_entry; |
6340 | } | |
6341 | ||
380bca97 | 6342 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6343 | Returns NULL if signature SIG is not present in the table. |
6344 | It is up to the caller to complain about this. */ | |
348e048f DE |
6345 | |
6346 | static struct signatured_type * | |
a2ce51a0 | 6347 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6348 | { |
518817b3 SM |
6349 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6350 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 6351 | |
a2ce51a0 DE |
6352 | if (cu->dwo_unit |
6353 | && dwarf2_per_objfile->using_index) | |
6354 | { | |
6355 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6356 | These cases require special processing. */ | |
ed2dc618 | 6357 | if (get_dwp_file (dwarf2_per_objfile) == NULL) |
a2ce51a0 DE |
6358 | return lookup_dwo_signatured_type (cu, sig); |
6359 | else | |
6360 | return lookup_dwp_signatured_type (cu, sig); | |
6361 | } | |
6362 | else | |
6363 | { | |
6364 | struct signatured_type find_entry, *entry; | |
348e048f | 6365 | |
a2ce51a0 DE |
6366 | if (dwarf2_per_objfile->signatured_types == NULL) |
6367 | return NULL; | |
6368 | find_entry.signature = sig; | |
9a3c8263 | 6369 | entry = ((struct signatured_type *) |
b0b6a987 TT |
6370 | htab_find (dwarf2_per_objfile->signatured_types.get (), |
6371 | &find_entry)); | |
a2ce51a0 DE |
6372 | return entry; |
6373 | } | |
348e048f | 6374 | } |
18a8505e | 6375 | |
42e7ad6c | 6376 | /* Low level DIE reading support. */ |
348e048f | 6377 | |
d85a05f0 DJ |
6378 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6379 | ||
6380 | static void | |
6381 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6382 | struct dwarf2_cu *cu, |
3019eac3 | 6383 | struct dwarf2_section_info *section, |
685af9cd TT |
6384 | struct dwo_file *dwo_file, |
6385 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6386 | { |
fceca515 | 6387 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6388 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6389 | reader->cu = cu; |
3019eac3 | 6390 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6391 | reader->die_section = section; |
6392 | reader->buffer = section->buffer; | |
f664829e | 6393 | reader->buffer_end = section->buffer + section->size; |
685af9cd | 6394 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6395 | } |
6396 | ||
c0ab21c2 | 6397 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6398 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6399 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6400 | already. |
6401 | ||
6402 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6403 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6404 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6405 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6406 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6407 | STUB_COMP_DIR may be non-NULL. | |
3e225074 | 6408 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE |
b0c7bfa9 | 6409 | are filled in with the info of the DIE from the DWO file. |
685af9cd TT |
6410 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6411 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6412 | kept around for at least as long as *RESULT_READER. | |
6413 | ||
b0c7bfa9 DE |
6414 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6415 | ||
6416 | static int | |
6417 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
6418 | struct dwo_unit *dwo_unit, | |
b0c7bfa9 | 6419 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6420 | const char *stub_comp_dir, |
b0c7bfa9 | 6421 | struct die_reader_specs *result_reader, |
d521ce57 | 6422 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6423 | struct die_info **result_comp_unit_die, |
685af9cd | 6424 | abbrev_table_up *result_dwo_abbrev_table) |
b0c7bfa9 | 6425 | { |
ed2dc618 | 6426 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
b0c7bfa9 DE |
6427 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
6428 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 6429 | bfd *abfd; |
d521ce57 | 6430 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6431 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6432 | int i,num_extra_attrs; | |
6433 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6434 | struct die_info *comp_unit_die; |
6435 | ||
b0aeadb3 DE |
6436 | /* At most one of these may be provided. */ |
6437 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6438 | |
b0c7bfa9 DE |
6439 | /* These attributes aren't processed until later: |
6440 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6441 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6442 | referenced later. However, these attributes are found in the stub | |
6443 | which we won't have later. In order to not impose this complication | |
6444 | on the rest of the code, we read them here and copy them to the | |
6445 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6446 | |
6447 | stmt_list = NULL; | |
6448 | low_pc = NULL; | |
6449 | high_pc = NULL; | |
6450 | ranges = NULL; | |
6451 | comp_dir = NULL; | |
6452 | ||
6453 | if (stub_comp_unit_die != NULL) | |
6454 | { | |
6455 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6456 | DWO file. */ | |
6457 | if (! this_cu->is_debug_types) | |
6458 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
6459 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6460 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
6461 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
6462 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
6463 | ||
a39fdb41 | 6464 | cu->addr_base = stub_comp_unit_die->addr_base (); |
b0c7bfa9 | 6465 | |
18a8505e AT |
6466 | /* There should be a DW_AT_rnglists_base (DW_AT_GNU_ranges_base) attribute |
6467 | here (if needed). We need the value before we can process | |
6468 | DW_AT_ranges. */ | |
a39fdb41 | 6469 | cu->ranges_base = stub_comp_unit_die->ranges_base (); |
b0c7bfa9 | 6470 | } |
a2ce51a0 DE |
6471 | else if (stub_comp_dir != NULL) |
6472 | { | |
6473 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 6474 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
6475 | comp_dir->name = DW_AT_comp_dir; |
6476 | comp_dir->form = DW_FORM_string; | |
6477 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
6478 | DW_STRING (comp_dir) = stub_comp_dir; | |
6479 | } | |
b0c7bfa9 DE |
6480 | |
6481 | /* Set up for reading the DWO CU/TU. */ | |
6482 | cu->dwo_unit = dwo_unit; | |
685af9cd | 6483 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
6484 | section->read (objfile); |
6485 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
6486 | begin_info_ptr = info_ptr = (section->buffer |
6487 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 6488 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 DE |
6489 | |
6490 | if (this_cu->is_debug_types) | |
6491 | { | |
b0c7bfa9 DE |
6492 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
6493 | ||
ed2dc618 SM |
6494 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6495 | &cu->header, section, | |
b0c7bfa9 | 6496 | dwo_abbrev_section, |
43988095 | 6497 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 6498 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 6499 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
6500 | { |
6501 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 6502 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 6503 | hex_string (sig_type->signature), |
43988095 | 6504 | hex_string (cu->header.signature), |
9d8780f0 | 6505 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
6506 | bfd_get_filename (abfd)); |
6507 | } | |
9c541725 | 6508 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6509 | /* For DWOs coming from DWP files, we don't know the CU length |
6510 | nor the type's offset in the TU until now. */ | |
4057dfde | 6511 | dwo_unit->length = cu->header.get_length (); |
9c541725 | 6512 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
6513 | |
6514 | /* Establish the type offset that can be used to lookup the type. | |
6515 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
6516 | sig_type->type_offset_in_section |
6517 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
6518 | } |
6519 | else | |
6520 | { | |
ed2dc618 SM |
6521 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6522 | &cu->header, section, | |
b0c7bfa9 | 6523 | dwo_abbrev_section, |
43988095 | 6524 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 6525 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6526 | /* For DWOs coming from DWP files, we don't know the CU length |
6527 | until now. */ | |
4057dfde | 6528 | dwo_unit->length = cu->header.get_length (); |
b0c7bfa9 DE |
6529 | } |
6530 | ||
685af9cd | 6531 | *result_dwo_abbrev_table |
86de1d91 TT |
6532 | = abbrev_table::read (objfile, dwo_abbrev_section, |
6533 | cu->header.abbrev_sect_off); | |
685af9cd TT |
6534 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, |
6535 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
6536 | |
6537 | /* Read in the die, but leave space to copy over the attributes | |
6538 | from the stub. This has the benefit of simplifying the rest of | |
6539 | the code - all the work to maintain the illusion of a single | |
6540 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
6541 | num_extra_attrs = ((stmt_list != NULL) | |
6542 | + (low_pc != NULL) | |
6543 | + (high_pc != NULL) | |
6544 | + (ranges != NULL) | |
6545 | + (comp_dir != NULL)); | |
6546 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
3e225074 | 6547 | num_extra_attrs); |
b0c7bfa9 DE |
6548 | |
6549 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
6550 | comp_unit_die = *result_comp_unit_die; | |
6551 | i = comp_unit_die->num_attrs; | |
6552 | if (stmt_list != NULL) | |
6553 | comp_unit_die->attrs[i++] = *stmt_list; | |
6554 | if (low_pc != NULL) | |
6555 | comp_unit_die->attrs[i++] = *low_pc; | |
6556 | if (high_pc != NULL) | |
6557 | comp_unit_die->attrs[i++] = *high_pc; | |
6558 | if (ranges != NULL) | |
6559 | comp_unit_die->attrs[i++] = *ranges; | |
6560 | if (comp_dir != NULL) | |
6561 | comp_unit_die->attrs[i++] = *comp_dir; | |
6562 | comp_unit_die->num_attrs += num_extra_attrs; | |
6563 | ||
b4f54984 | 6564 | if (dwarf_die_debug) |
bf6af496 DE |
6565 | { |
6566 | fprintf_unfiltered (gdb_stdlog, | |
6567 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 6568 | section->get_name (), |
bf6af496 DE |
6569 | (unsigned) (begin_info_ptr - section->buffer), |
6570 | bfd_get_filename (abfd)); | |
b4f54984 | 6571 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
6572 | } |
6573 | ||
b0c7bfa9 DE |
6574 | /* Skip dummy compilation units. */ |
6575 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
6576 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
6577 | return 0; | |
6578 | ||
6579 | *result_info_ptr = info_ptr; | |
6580 | return 1; | |
6581 | } | |
6582 | ||
a084a2a6 AT |
6583 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
6584 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
6585 | signature is part of the header. */ | |
6586 | static gdb::optional<ULONGEST> | |
6587 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
6588 | { | |
6589 | if (cu->header.version >= 5) | |
6590 | return cu->header.signature; | |
6591 | struct attribute *attr; | |
6592 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
6593 | if (attr == nullptr) | |
6594 | return gdb::optional<ULONGEST> (); | |
6595 | return DW_UNSND (attr); | |
6596 | } | |
6597 | ||
c0ab21c2 | 6598 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6599 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 6600 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
6601 | |
6602 | static struct dwo_unit * | |
6603 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
c0ab21c2 TT |
6604 | struct die_info *comp_unit_die, |
6605 | const char *dwo_name) | |
b0c7bfa9 DE |
6606 | { |
6607 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 6608 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 6609 | const char *comp_dir; |
b0c7bfa9 | 6610 | |
a2ce51a0 DE |
6611 | gdb_assert (cu != NULL); |
6612 | ||
b0c7bfa9 | 6613 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 6614 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 6615 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 DE |
6616 | |
6617 | if (this_cu->is_debug_types) | |
6618 | { | |
6619 | struct signatured_type *sig_type; | |
6620 | ||
6621 | /* Since this_cu is the first member of struct signatured_type, | |
6622 | we can go from a pointer to one to a pointer to the other. */ | |
6623 | sig_type = (struct signatured_type *) this_cu; | |
b0c7bfa9 DE |
6624 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); |
6625 | } | |
6626 | else | |
6627 | { | |
a084a2a6 AT |
6628 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
6629 | if (!signature.has_value ()) | |
b0c7bfa9 DE |
6630 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
6631 | " [in module %s]"), | |
e3b94546 | 6632 | dwo_name, objfile_name (this_cu->dwarf2_per_objfile->objfile)); |
b0c7bfa9 | 6633 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, |
a084a2a6 | 6634 | *signature); |
b0c7bfa9 DE |
6635 | } |
6636 | ||
b0c7bfa9 DE |
6637 | return dwo_unit; |
6638 | } | |
6639 | ||
c0ab21c2 | 6640 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 6641 | See it for a description of the parameters. |
fcd3b13d | 6642 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 6643 | |
c0ab21c2 TT |
6644 | void |
6645 | cutu_reader::init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, | |
6751ebae | 6646 | int use_existing_cu) |
a2ce51a0 | 6647 | { |
a2ce51a0 | 6648 | struct signatured_type *sig_type; |
a2ce51a0 DE |
6649 | |
6650 | /* Verify we can do the following downcast, and that we have the | |
6651 | data we need. */ | |
6652 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
6653 | sig_type = (struct signatured_type *) this_cu; | |
6654 | gdb_assert (sig_type->dwo_unit != NULL); | |
6655 | ||
6aa5f3a6 DE |
6656 | if (use_existing_cu && this_cu->cu != NULL) |
6657 | { | |
6658 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 6659 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 6660 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
6661 | } |
6662 | else | |
6663 | { | |
6664 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
6665 | gdb_assert (this_cu->cu == NULL); | |
c0ab21c2 | 6666 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
6aa5f3a6 DE |
6667 | } |
6668 | ||
6669 | /* A future optimization, if needed, would be to use an existing | |
6670 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
6671 | could share abbrev tables. */ | |
a2ce51a0 DE |
6672 | |
6673 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, | |
a2ce51a0 DE |
6674 | NULL /* stub_comp_unit_die */, |
6675 | sig_type->dwo_unit->dwo_file->comp_dir, | |
4ebe4877 | 6676 | this, &info_ptr, |
3e225074 | 6677 | &comp_unit_die, |
c0ab21c2 | 6678 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
6679 | { |
6680 | /* Dummy die. */ | |
c0ab21c2 | 6681 | dummy_p = true; |
a2ce51a0 | 6682 | } |
a2ce51a0 DE |
6683 | } |
6684 | ||
fd820528 | 6685 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 6686 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 6687 | |
f4dc4d17 DE |
6688 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
6689 | Otherwise the table specified in the comp unit header is read in and used. | |
6690 | This is an optimization for when we already have the abbrev table. | |
6691 | ||
dee91e82 | 6692 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
6751ebae | 6693 | Otherwise, a new CU is allocated with xmalloc. */ |
aaa75496 | 6694 | |
c0ab21c2 TT |
6695 | cutu_reader::cutu_reader (struct dwarf2_per_cu_data *this_cu, |
6696 | struct abbrev_table *abbrev_table, | |
6751ebae | 6697 | int use_existing_cu, |
c0ab21c2 TT |
6698 | bool skip_partial) |
6699 | : die_reader_specs {}, | |
6751ebae | 6700 | m_this_cu (this_cu) |
c906108c | 6701 | { |
ed2dc618 | 6702 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 6703 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 6704 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 6705 | bfd *abfd = section->get_bfd_owner (); |
dee91e82 | 6706 | struct dwarf2_cu *cu; |
c0ab21c2 | 6707 | const gdb_byte *begin_info_ptr; |
dee91e82 | 6708 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 6709 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
6710 | /* Non-zero if CU currently points to a DWO file and we need to |
6711 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 6712 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 6713 | int rereading_dwo_cu = 0; |
c906108c | 6714 | |
b4f54984 | 6715 | if (dwarf_die_debug) |
9d8780f0 | 6716 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 6717 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 6718 | sect_offset_str (this_cu->sect_off)); |
09406207 | 6719 | |
a2ce51a0 DE |
6720 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
6721 | file (instead of going through the stub), short-circuit all of this. */ | |
6722 | if (this_cu->reading_dwo_directly) | |
6723 | { | |
6724 | /* Narrow down the scope of possibilities to have to understand. */ | |
6725 | gdb_assert (this_cu->is_debug_types); | |
6726 | gdb_assert (abbrev_table == NULL); | |
6751ebae | 6727 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu); |
a2ce51a0 DE |
6728 | return; |
6729 | } | |
6730 | ||
dee91e82 | 6731 | /* This is cheap if the section is already read in. */ |
96b79293 | 6732 | section->read (objfile); |
dee91e82 | 6733 | |
9c541725 | 6734 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
6735 | |
6736 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
6737 | |
6738 | if (use_existing_cu && this_cu->cu != NULL) | |
6739 | { | |
6740 | cu = this_cu->cu; | |
42e7ad6c DE |
6741 | /* If this CU is from a DWO file we need to start over, we need to |
6742 | refetch the attributes from the skeleton CU. | |
6743 | This could be optimized by retrieving those attributes from when we | |
6744 | were here the first time: the previous comp_unit_die was stored in | |
6745 | comp_unit_obstack. But there's no data yet that we need this | |
6746 | optimization. */ | |
6747 | if (cu->dwo_unit != NULL) | |
6748 | rereading_dwo_cu = 1; | |
dee91e82 DE |
6749 | } |
6750 | else | |
6751 | { | |
6752 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
6753 | gdb_assert (this_cu->cu == NULL); | |
c0ab21c2 TT |
6754 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
6755 | cu = m_new_cu.get (); | |
42e7ad6c | 6756 | } |
dee91e82 | 6757 | |
b0c7bfa9 | 6758 | /* Get the header. */ |
9c541725 | 6759 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
6760 | { |
6761 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 6762 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
6763 | } |
6764 | else | |
6765 | { | |
3019eac3 | 6766 | if (this_cu->is_debug_types) |
dee91e82 | 6767 | { |
ed2dc618 SM |
6768 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6769 | &cu->header, section, | |
4bdcc0c1 | 6770 | abbrev_section, info_ptr, |
43988095 | 6771 | rcuh_kind::TYPE); |
dee91e82 | 6772 | |
42e7ad6c DE |
6773 | /* Since per_cu is the first member of struct signatured_type, |
6774 | we can go from a pointer to one to a pointer to the other. */ | |
6775 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 6776 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
6777 | gdb_assert (sig_type->type_offset_in_tu |
6778 | == cu->header.type_cu_offset_in_tu); | |
6779 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 6780 | |
42e7ad6c DE |
6781 | /* LENGTH has not been set yet for type units if we're |
6782 | using .gdb_index. */ | |
4057dfde | 6783 | this_cu->length = cu->header.get_length (); |
3019eac3 DE |
6784 | |
6785 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
6786 | sig_type->type_offset_in_section = |
6787 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
6788 | |
6789 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
6790 | } |
6791 | else | |
6792 | { | |
ed2dc618 SM |
6793 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6794 | &cu->header, section, | |
4bdcc0c1 | 6795 | abbrev_section, |
43988095 JK |
6796 | info_ptr, |
6797 | rcuh_kind::COMPILE); | |
dee91e82 | 6798 | |
9c541725 | 6799 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
4057dfde | 6800 | gdb_assert (this_cu->length == cu->header.get_length ()); |
43988095 | 6801 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
6802 | } |
6803 | } | |
10b3939b | 6804 | |
6caca83c | 6805 | /* Skip dummy compilation units. */ |
dee91e82 | 6806 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 6807 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
6808 | { |
6809 | dummy_p = true; | |
6810 | return; | |
6811 | } | |
6caca83c | 6812 | |
433df2d4 DE |
6813 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
6814 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 6815 | done. */ |
f4dc4d17 | 6816 | if (abbrev_table != NULL) |
685af9cd TT |
6817 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
6818 | else | |
f4dc4d17 | 6819 | { |
c0ab21c2 | 6820 | m_abbrev_table_holder |
86de1d91 TT |
6821 | = abbrev_table::read (objfile, abbrev_section, |
6822 | cu->header.abbrev_sect_off); | |
c0ab21c2 | 6823 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 6824 | } |
af703f96 | 6825 | |
dee91e82 | 6826 | /* Read the top level CU/TU die. */ |
c0ab21c2 | 6827 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
3e225074 | 6828 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
93311388 | 6829 | |
58f0c718 | 6830 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
6831 | { |
6832 | dummy_p = true; | |
6833 | return; | |
6834 | } | |
58f0c718 | 6835 | |
b0c7bfa9 | 6836 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
6837 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
6838 | table from the DWO file and pass the ownership over to us. It will be | |
6839 | referenced from READER, so we must make sure to free it after we're done | |
6840 | with READER. | |
6841 | ||
b0c7bfa9 DE |
6842 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
6843 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 6844 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 6845 | if (dwo_name != nullptr) |
3019eac3 | 6846 | { |
3019eac3 | 6847 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 6848 | struct die_info *dwo_comp_unit_die; |
3019eac3 | 6849 | |
3e225074 | 6850 | if (comp_unit_die->has_children) |
6a506a2d | 6851 | { |
b98664d3 | 6852 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
6853 | " has children (offset %s) [in module %s]"), |
6854 | sect_offset_str (this_cu->sect_off), | |
6855 | bfd_get_filename (abfd)); | |
6a506a2d | 6856 | } |
c0ab21c2 | 6857 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die, dwo_name); |
6a506a2d | 6858 | if (dwo_unit != NULL) |
3019eac3 | 6859 | { |
6a506a2d | 6860 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
a2ce51a0 | 6861 | comp_unit_die, NULL, |
c0ab21c2 | 6862 | this, &info_ptr, |
3e225074 | 6863 | &dwo_comp_unit_die, |
c0ab21c2 | 6864 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
6865 | { |
6866 | /* Dummy die. */ | |
c0ab21c2 | 6867 | dummy_p = true; |
6a506a2d DE |
6868 | return; |
6869 | } | |
6870 | comp_unit_die = dwo_comp_unit_die; | |
6871 | } | |
6872 | else | |
6873 | { | |
6874 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
6875 | the stub. A complaint has already been logged. There's | |
6876 | not much more we can do except pass on the stub DIE to | |
6877 | die_reader_func. We don't want to throw an error on bad | |
6878 | debug info. */ | |
3019eac3 DE |
6879 | } |
6880 | } | |
c0ab21c2 | 6881 | } |
3019eac3 | 6882 | |
6751ebae TT |
6883 | void |
6884 | cutu_reader::keep () | |
c0ab21c2 | 6885 | { |
b0c7bfa9 | 6886 | /* Done, clean up. */ |
6751ebae TT |
6887 | gdb_assert (!dummy_p); |
6888 | if (m_new_cu != NULL) | |
348e048f | 6889 | { |
c0ab21c2 TT |
6890 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6891 | = m_this_cu->dwarf2_per_objfile; | |
fcd3b13d | 6892 | /* Link this CU into read_in_chain. */ |
c0ab21c2 TT |
6893 | m_this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; |
6894 | dwarf2_per_objfile->read_in_chain = m_this_cu; | |
fcd3b13d | 6895 | /* The chain owns it now. */ |
c0ab21c2 | 6896 | m_new_cu.release (); |
348e048f | 6897 | } |
dee91e82 DE |
6898 | } |
6899 | ||
18a8505e AT |
6900 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
6901 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
6902 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
6903 | |
6904 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 6905 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
6906 | |
6907 | We fill in THIS_CU->length. | |
6908 | ||
dee91e82 | 6909 | THIS_CU->cu is always freed when done. |
3019eac3 | 6910 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
6911 | to care whether it refers to the "main" CU or the DWO CU. |
6912 | ||
6913 | When parent_cu is passed, it is used to provide a default value for | |
6914 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 6915 | |
c0ab21c2 TT |
6916 | cutu_reader::cutu_reader (struct dwarf2_per_cu_data *this_cu, |
6917 | struct dwarf2_cu *parent_cu, | |
6918 | struct dwo_file *dwo_file) | |
6919 | : die_reader_specs {}, | |
6920 | m_this_cu (this_cu) | |
dee91e82 | 6921 | { |
ed2dc618 | 6922 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 6923 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 6924 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 6925 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 6926 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 6927 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 6928 | |
b4f54984 | 6929 | if (dwarf_die_debug) |
9d8780f0 | 6930 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 6931 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 6932 | sect_offset_str (this_cu->sect_off)); |
09406207 | 6933 | |
dee91e82 DE |
6934 | gdb_assert (this_cu->cu == NULL); |
6935 | ||
33e80786 DE |
6936 | abbrev_section = (dwo_file != NULL |
6937 | ? &dwo_file->sections.abbrev | |
6938 | : get_abbrev_section_for_cu (this_cu)); | |
6939 | ||
dee91e82 | 6940 | /* This is cheap if the section is already read in. */ |
96b79293 | 6941 | section->read (objfile); |
dee91e82 | 6942 | |
c0ab21c2 | 6943 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
dee91e82 | 6944 | |
9c541725 | 6945 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
ed2dc618 | 6946 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
c0ab21c2 | 6947 | &m_new_cu->header, section, |
4bdcc0c1 | 6948 | abbrev_section, info_ptr, |
43988095 JK |
6949 | (this_cu->is_debug_types |
6950 | ? rcuh_kind::TYPE | |
6951 | : rcuh_kind::COMPILE)); | |
dee91e82 | 6952 | |
18a8505e AT |
6953 | if (parent_cu != nullptr) |
6954 | { | |
c0ab21c2 TT |
6955 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
6956 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 6957 | } |
4057dfde | 6958 | this_cu->length = m_new_cu->header.get_length (); |
dee91e82 DE |
6959 | |
6960 | /* Skip dummy compilation units. */ | |
6961 | if (info_ptr >= begin_info_ptr + this_cu->length | |
6962 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
6963 | { |
6964 | dummy_p = true; | |
6965 | return; | |
6966 | } | |
72bf9492 | 6967 | |
c0ab21c2 | 6968 | m_abbrev_table_holder |
86de1d91 TT |
6969 | = abbrev_table::read (objfile, abbrev_section, |
6970 | m_new_cu->header.abbrev_sect_off); | |
dee91e82 | 6971 | |
c0ab21c2 TT |
6972 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
6973 | m_abbrev_table_holder.get ()); | |
3e225074 | 6974 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
dee91e82 DE |
6975 | } |
6976 | ||
0018ea6f DE |
6977 | \f |
6978 | /* Type Unit Groups. | |
dee91e82 | 6979 | |
0018ea6f DE |
6980 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
6981 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
6982 | so that all types coming from the same compilation (.o file) are grouped | |
6983 | together. A future step could be to put the types in the same symtab as | |
6984 | the CU the types ultimately came from. */ | |
ff013f42 | 6985 | |
f4dc4d17 DE |
6986 | static hashval_t |
6987 | hash_type_unit_group (const void *item) | |
6988 | { | |
9a3c8263 SM |
6989 | const struct type_unit_group *tu_group |
6990 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 6991 | |
094b34ac | 6992 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 6993 | } |
348e048f DE |
6994 | |
6995 | static int | |
f4dc4d17 | 6996 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 6997 | { |
9a3c8263 SM |
6998 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
6999 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7000 | |
094b34ac | 7001 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7002 | } |
348e048f | 7003 | |
f4dc4d17 DE |
7004 | /* Allocate a hash table for type unit groups. */ |
7005 | ||
eaa5fa8b | 7006 | static htab_up |
298e9637 | 7007 | allocate_type_unit_groups_table () |
f4dc4d17 | 7008 | { |
eaa5fa8b TT |
7009 | return htab_up (htab_create_alloc (3, |
7010 | hash_type_unit_group, | |
7011 | eq_type_unit_group, | |
7012 | NULL, xcalloc, xfree)); | |
f4dc4d17 | 7013 | } |
dee91e82 | 7014 | |
f4dc4d17 DE |
7015 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7016 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7017 | of any one psymtab grow too big. */ | |
7018 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7019 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7020 | |
094b34ac | 7021 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7022 | Create the type_unit_group object used to hold one or more TUs. */ |
7023 | ||
7024 | static struct type_unit_group * | |
094b34ac | 7025 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7026 | { |
518817b3 SM |
7027 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7028 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 | 7029 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 7030 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7031 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
7032 | |
7033 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7034 | struct type_unit_group); | |
094b34ac | 7035 | per_cu = &tu_group->per_cu; |
518817b3 | 7036 | per_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
f4dc4d17 | 7037 | |
094b34ac DE |
7038 | if (dwarf2_per_objfile->using_index) |
7039 | { | |
7040 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7041 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
7042 | } |
7043 | else | |
7044 | { | |
9c541725 | 7045 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7046 | dwarf2_psymtab *pst; |
528e1572 | 7047 | std::string name; |
094b34ac DE |
7048 | |
7049 | /* Give the symtab a useful name for debug purposes. */ | |
7050 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7051 | name = string_printf ("<type_units_%d>", |
7052 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7053 | else |
528e1572 | 7054 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7055 | |
528e1572 | 7056 | pst = create_partial_symtab (per_cu, name.c_str ()); |
6d94535f | 7057 | pst->anonymous = true; |
094b34ac | 7058 | } |
f4dc4d17 | 7059 | |
094b34ac | 7060 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7061 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7062 | |
7063 | return tu_group; | |
7064 | } | |
7065 | ||
094b34ac DE |
7066 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7067 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7068 | |
7069 | static struct type_unit_group * | |
ff39bb5e | 7070 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7071 | { |
518817b3 SM |
7072 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7073 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 DE |
7074 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
7075 | struct type_unit_group *tu_group; | |
7076 | void **slot; | |
7077 | unsigned int line_offset; | |
7078 | struct type_unit_group type_unit_group_for_lookup; | |
7079 | ||
7080 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
298e9637 | 7081 | dwarf2_per_objfile->type_unit_groups = allocate_type_unit_groups_table (); |
f4dc4d17 DE |
7082 | |
7083 | /* Do we need to create a new group, or can we use an existing one? */ | |
7084 | ||
7085 | if (stmt_list) | |
7086 | { | |
7087 | line_offset = DW_UNSND (stmt_list); | |
7088 | ++tu_stats->nr_symtab_sharers; | |
7089 | } | |
7090 | else | |
7091 | { | |
7092 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7093 | We can do various things here like create one group per TU or | |
7094 | spread them over multiple groups to split up the expansion work. | |
7095 | To avoid worst case scenarios (too many groups or too large groups) | |
7096 | we, umm, group them in bunches. */ | |
7097 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7098 | | (tu_stats->nr_stmt_less_type_units | |
7099 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7100 | ++tu_stats->nr_stmt_less_type_units; | |
7101 | } | |
7102 | ||
094b34ac | 7103 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7104 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
eaa5fa8b | 7105 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups.get (), |
f4dc4d17 DE |
7106 | &type_unit_group_for_lookup, INSERT); |
7107 | if (*slot != NULL) | |
7108 | { | |
9a3c8263 | 7109 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7110 | gdb_assert (tu_group != NULL); |
7111 | } | |
7112 | else | |
7113 | { | |
9c541725 | 7114 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7115 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7116 | *slot = tu_group; |
7117 | ++tu_stats->nr_symtabs; | |
7118 | } | |
7119 | ||
7120 | return tu_group; | |
7121 | } | |
0018ea6f DE |
7122 | \f |
7123 | /* Partial symbol tables. */ | |
7124 | ||
7125 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7126 | ||
7127 | The caller must fill in the following details: | |
7128 | dirname, textlow, texthigh. */ | |
7129 | ||
891813be | 7130 | static dwarf2_psymtab * |
0018ea6f DE |
7131 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) |
7132 | { | |
e3b94546 | 7133 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
891813be | 7134 | dwarf2_psymtab *pst; |
0018ea6f | 7135 | |
891813be | 7136 | pst = new dwarf2_psymtab (name, objfile, 0); |
0018ea6f | 7137 | |
6d94535f | 7138 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7139 | |
7140 | /* This is the glue that links PST into GDB's symbol API. */ | |
891813be | 7141 | pst->per_cu_data = per_cu; |
0018ea6f DE |
7142 | per_cu->v.psymtab = pst; |
7143 | ||
7144 | return pst; | |
7145 | } | |
7146 | ||
c0ab21c2 | 7147 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7148 | |
7149 | static void | |
7150 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7151 | const gdb_byte *info_ptr, |
0018ea6f | 7152 | struct die_info *comp_unit_die, |
c0ab21c2 | 7153 | enum language pretend_language) |
0018ea6f DE |
7154 | { |
7155 | struct dwarf2_cu *cu = reader->cu; | |
518817b3 | 7156 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 7157 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f | 7158 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7159 | CORE_ADDR baseaddr; |
7160 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7161 | dwarf2_psymtab *pst; |
3a2b436a | 7162 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7163 | const char *filename; |
0018ea6f | 7164 | |
0018ea6f DE |
7165 | gdb_assert (! per_cu->is_debug_types); |
7166 | ||
c0ab21c2 | 7167 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7168 | |
0018ea6f | 7169 | /* Allocate a new partial symbol table structure. */ |
2e927613 TV |
7170 | gdb::unique_xmalloc_ptr<char> debug_filename; |
7171 | static const char artificial[] = "<artificial>"; | |
7d45c7c3 KB |
7172 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7173 | if (filename == NULL) | |
0018ea6f | 7174 | filename = ""; |
2e927613 TV |
7175 | else if (strcmp (filename, artificial) == 0) |
7176 | { | |
7177 | debug_filename.reset (concat (artificial, "@", | |
85f0dd3c TV |
7178 | sect_offset_str (per_cu->sect_off), |
7179 | (char *) NULL)); | |
2e927613 TV |
7180 | filename = debug_filename.get (); |
7181 | } | |
0018ea6f DE |
7182 | |
7183 | pst = create_partial_symtab (per_cu, filename); | |
7184 | ||
7185 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7186 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7187 | |
b3b3bada | 7188 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7189 | |
7190 | dwarf2_find_base_address (comp_unit_die, cu); | |
7191 | ||
7192 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7193 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7194 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7195 | &best_highpc, cu, pst); | |
7196 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7197 | { |
7198 | CORE_ADDR low | |
7199 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7200 | - baseaddr); | |
7201 | CORE_ADDR high | |
7202 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7203 | - baseaddr - 1); | |
7204 | /* Store the contiguous range if it is not empty; it can be | |
7205 | empty for CUs with no code. */ | |
d320c2b5 TT |
7206 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
7207 | low, high, pst); | |
79748972 | 7208 | } |
0018ea6f DE |
7209 | |
7210 | /* Check if comp unit has_children. | |
7211 | If so, read the rest of the partial symbols from this comp unit. | |
7212 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7213 | if (comp_unit_die->has_children) |
0018ea6f DE |
7214 | { |
7215 | struct partial_die_info *first_die; | |
7216 | CORE_ADDR lowpc, highpc; | |
7217 | ||
7218 | lowpc = ((CORE_ADDR) -1); | |
7219 | highpc = ((CORE_ADDR) 0); | |
7220 | ||
7221 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7222 | ||
7223 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7224 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7225 | |
7226 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7227 | complaints from `maint check'. */ | |
7228 | if (lowpc == ((CORE_ADDR) -1)) | |
7229 | lowpc = highpc; | |
7230 | ||
7231 | /* If the compilation unit didn't have an explicit address range, | |
7232 | then use the information extracted from its child dies. */ | |
e385593e | 7233 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7234 | { |
7235 | best_lowpc = lowpc; | |
7236 | best_highpc = highpc; | |
7237 | } | |
7238 | } | |
4ae976d1 | 7239 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7240 | best_lowpc + baseaddr) |
7241 | - baseaddr); | |
4ae976d1 | 7242 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7243 | best_highpc + baseaddr) |
7244 | - baseaddr); | |
0018ea6f | 7245 | |
8763cede | 7246 | end_psymtab_common (objfile, pst); |
0018ea6f | 7247 | |
ae640021 | 7248 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7249 | { |
7250 | int i; | |
ae640021 | 7251 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7252 | |
7253 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7254 | post-pass. */ | |
7255 | pst->number_of_dependencies = len; | |
a9342b62 TT |
7256 | pst->dependencies |
7257 | = objfile->partial_symtabs->allocate_dependencies (len); | |
ae640021 AB |
7258 | for (i = 0; i < len; ++i) |
7259 | { | |
7260 | pst->dependencies[i] | |
7261 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7262 | } | |
0018ea6f | 7263 | |
ae640021 | 7264 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7265 | } |
7266 | ||
7267 | /* Get the list of files included in the current compilation unit, | |
7268 | and build a psymtab for each of them. */ | |
7269 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7270 | ||
b4f54984 | 7271 | if (dwarf_read_debug) |
b926417a TT |
7272 | fprintf_unfiltered (gdb_stdlog, |
7273 | "Psymtab for %s unit @%s: %s - %s" | |
7274 | ", %d global, %d static syms\n", | |
7275 | per_cu->is_debug_types ? "type" : "comp", | |
7276 | sect_offset_str (per_cu->sect_off), | |
7277 | paddress (gdbarch, pst->text_low (objfile)), | |
7278 | paddress (gdbarch, pst->text_high (objfile)), | |
7279 | pst->n_global_syms, pst->n_static_syms); | |
0018ea6f DE |
7280 | } |
7281 | ||
7282 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7283 | Process compilation unit THIS_CU for a psymtab. */ | |
7284 | ||
7285 | static void | |
7286 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
135f5437 | 7287 | bool want_partial_unit, |
b93601f3 | 7288 | enum language pretend_language) |
0018ea6f DE |
7289 | { |
7290 | /* If this compilation unit was already read in, free the | |
7291 | cached copy in order to read it in again. This is | |
7292 | necessary because we skipped some symbols when we first | |
7293 | read in the compilation unit (see load_partial_dies). | |
7294 | This problem could be avoided, but the benefit is unclear. */ | |
7295 | if (this_cu->cu != NULL) | |
7296 | free_one_cached_comp_unit (this_cu); | |
7297 | ||
6751ebae | 7298 | cutu_reader reader (this_cu, NULL, 0, false); |
c0ab21c2 | 7299 | |
58990295 TV |
7300 | switch (reader.comp_unit_die->tag) |
7301 | { | |
7302 | case DW_TAG_compile_unit: | |
7303 | this_cu->unit_type = DW_UT_compile; | |
7304 | break; | |
7305 | case DW_TAG_partial_unit: | |
7306 | this_cu->unit_type = DW_UT_partial; | |
7307 | break; | |
7308 | default: | |
7309 | abort (); | |
7310 | } | |
7311 | ||
c0ab21c2 | 7312 | if (reader.dummy_p) |
f1902523 | 7313 | { |
c0ab21c2 | 7314 | /* Nothing. */ |
f1902523 | 7315 | } |
c0ab21c2 | 7316 | else if (this_cu->is_debug_types) |
3e225074 TT |
7317 | build_type_psymtabs_reader (&reader, reader.info_ptr, |
7318 | reader.comp_unit_die); | |
135f5437 TT |
7319 | else if (want_partial_unit |
7320 | || reader.comp_unit_die->tag != DW_TAG_partial_unit) | |
c0ab21c2 TT |
7321 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, |
7322 | reader.comp_unit_die, | |
c0ab21c2 | 7323 | pretend_language); |
0018ea6f | 7324 | |
58990295 TV |
7325 | this_cu->lang = this_cu->cu->language; |
7326 | ||
0018ea6f | 7327 | /* Age out any secondary CUs. */ |
ed2dc618 | 7328 | age_cached_comp_units (this_cu->dwarf2_per_objfile); |
0018ea6f | 7329 | } |
f4dc4d17 DE |
7330 | |
7331 | /* Reader function for build_type_psymtabs. */ | |
7332 | ||
7333 | static void | |
7334 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7335 | const gdb_byte *info_ptr, |
3e225074 | 7336 | struct die_info *type_unit_die) |
f4dc4d17 | 7337 | { |
ed2dc618 | 7338 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 7339 | = reader->cu->per_cu->dwarf2_per_objfile; |
f4dc4d17 DE |
7340 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7341 | struct dwarf2_cu *cu = reader->cu; | |
7342 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7343 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7344 | struct type_unit_group *tu_group; |
7345 | struct attribute *attr; | |
7346 | struct partial_die_info *first_die; | |
7347 | CORE_ADDR lowpc, highpc; | |
891813be | 7348 | dwarf2_psymtab *pst; |
f4dc4d17 | 7349 | |
0186c6a7 DE |
7350 | gdb_assert (per_cu->is_debug_types); |
7351 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 7352 | |
3e225074 | 7353 | if (! type_unit_die->has_children) |
f4dc4d17 DE |
7354 | return; |
7355 | ||
052c8bb8 | 7356 | attr = type_unit_die->attr (DW_AT_stmt_list); |
094b34ac | 7357 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7358 | |
df07e2c7 | 7359 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7360 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7361 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7362 | |
7363 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
f4dc4d17 | 7364 | pst = create_partial_symtab (per_cu, ""); |
6d94535f | 7365 | pst->anonymous = true; |
f4dc4d17 DE |
7366 | |
7367 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7368 | ||
7369 | lowpc = (CORE_ADDR) -1; | |
7370 | highpc = (CORE_ADDR) 0; | |
7371 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7372 | ||
8763cede | 7373 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
7374 | } |
7375 | ||
73051182 DE |
7376 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7377 | ||
7378 | struct tu_abbrev_offset | |
7379 | { | |
b2bdb8cf SM |
7380 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7381 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7382 | {} | |
7383 | ||
7384 | signatured_type *sig_type; | |
73051182 DE |
7385 | sect_offset abbrev_offset; |
7386 | }; | |
7387 | ||
484cf504 | 7388 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 7389 | |
484cf504 TT |
7390 | static bool |
7391 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7392 | const struct tu_abbrev_offset &b) | |
73051182 | 7393 | { |
484cf504 | 7394 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7395 | } |
7396 | ||
7397 | /* Efficiently read all the type units. | |
7398 | This does the bulk of the work for build_type_psymtabs. | |
7399 | ||
7400 | The efficiency is because we sort TUs by the abbrev table they use and | |
7401 | only read each abbrev table once. In one program there are 200K TUs | |
7402 | sharing 8K abbrev tables. | |
7403 | ||
7404 | The main purpose of this function is to support building the | |
7405 | dwarf2_per_objfile->type_unit_groups table. | |
7406 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
7407 | can collapse the search space by grouping them by stmt_list. | |
7408 | The savings can be significant, in the same program from above the 200K TUs | |
7409 | share 8K stmt_list tables. | |
7410 | ||
7411 | FUNC is expected to call get_type_unit_group, which will create the | |
7412 | struct type_unit_group if necessary and add it to | |
7413 | dwarf2_per_objfile->type_unit_groups. */ | |
7414 | ||
7415 | static void | |
ed2dc618 | 7416 | build_type_psymtabs_1 (struct dwarf2_per_objfile *dwarf2_per_objfile) |
73051182 | 7417 | { |
73051182 | 7418 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
685af9cd | 7419 | abbrev_table_up abbrev_table; |
73051182 | 7420 | sect_offset abbrev_offset; |
73051182 DE |
7421 | |
7422 | /* It's up to the caller to not call us multiple times. */ | |
7423 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
7424 | ||
b2bdb8cf | 7425 | if (dwarf2_per_objfile->all_type_units.empty ()) |
73051182 DE |
7426 | return; |
7427 | ||
7428 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7429 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7430 | read each abbrev table in. | |
7431 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7432 | This is simpler and efficient enough for now. | |
7433 | ||
7434 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7435 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7436 | stmt_list value too so in practice this should work well. | |
7437 | ||
7438 | The basic algorithm here is: | |
7439 | ||
7440 | sort TUs by abbrev table | |
7441 | for each TU with same abbrev table: | |
7442 | read abbrev table if first user | |
7443 | read TU top level DIE | |
7444 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7445 | call FUNC */ | |
7446 | ||
b4f54984 | 7447 | if (dwarf_read_debug) |
73051182 DE |
7448 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
7449 | ||
7450 | /* Sort in a separate table to maintain the order of all_type_units | |
7451 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf SM |
7452 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
7453 | sorted_by_abbrev.reserve (dwarf2_per_objfile->all_type_units.size ()); | |
7454 | ||
7455 | for (signatured_type *sig_type : dwarf2_per_objfile->all_type_units) | |
7456 | sorted_by_abbrev.emplace_back | |
7457 | (sig_type, read_abbrev_offset (dwarf2_per_objfile, | |
7458 | sig_type->per_cu.section, | |
7459 | sig_type->per_cu.sect_off)); | |
73051182 | 7460 | |
484cf504 TT |
7461 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7462 | sort_tu_by_abbrev_offset); | |
73051182 | 7463 | |
9c541725 | 7464 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 7465 | |
b2bdb8cf | 7466 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 7467 | { |
73051182 DE |
7468 | /* Switch to the next abbrev table if necessary. */ |
7469 | if (abbrev_table == NULL | |
b2bdb8cf | 7470 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 7471 | { |
b2bdb8cf | 7472 | abbrev_offset = tu.abbrev_offset; |
73051182 | 7473 | abbrev_table = |
86de1d91 TT |
7474 | abbrev_table::read (dwarf2_per_objfile->objfile, |
7475 | &dwarf2_per_objfile->abbrev, | |
7476 | abbrev_offset); | |
73051182 DE |
7477 | ++tu_stats->nr_uniq_abbrev_tables; |
7478 | } | |
7479 | ||
c0ab21c2 | 7480 | cutu_reader reader (&tu.sig_type->per_cu, abbrev_table.get (), |
6751ebae | 7481 | 0, false); |
c0ab21c2 TT |
7482 | if (!reader.dummy_p) |
7483 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7484 | reader.comp_unit_die); |
73051182 | 7485 | } |
6aa5f3a6 | 7486 | } |
73051182 | 7487 | |
6aa5f3a6 DE |
7488 | /* Print collected type unit statistics. */ |
7489 | ||
7490 | static void | |
ed2dc618 | 7491 | print_tu_stats (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
7492 | { |
7493 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
7494 | ||
7495 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf SM |
7496 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
7497 | dwarf2_per_objfile->all_type_units.size ()); | |
6aa5f3a6 DE |
7498 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
7499 | tu_stats->nr_uniq_abbrev_tables); | |
7500 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
7501 | tu_stats->nr_symtabs); | |
7502 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
7503 | tu_stats->nr_symtab_sharers); | |
7504 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
7505 | tu_stats->nr_stmt_less_type_units); | |
7506 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
7507 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
7508 | } |
7509 | ||
f4dc4d17 DE |
7510 | /* Traversal function for build_type_psymtabs. */ |
7511 | ||
7512 | static int | |
7513 | build_type_psymtab_dependencies (void **slot, void *info) | |
7514 | { | |
ed2dc618 SM |
7515 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7516 | = (struct dwarf2_per_objfile *) info; | |
f4dc4d17 DE |
7517 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7518 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 7519 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 7520 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 7521 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
7522 | int i; |
7523 | ||
7524 | gdb_assert (len > 0); | |
197400e8 | 7525 | gdb_assert (per_cu->type_unit_group_p ()); |
f4dc4d17 DE |
7526 | |
7527 | pst->number_of_dependencies = len; | |
a9342b62 | 7528 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 7529 | for (i = 0; i < len; ++i) |
f4dc4d17 | 7530 | { |
df07e2c7 | 7531 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
7532 | gdb_assert (iter->per_cu.is_debug_types); |
7533 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 7534 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
7535 | } |
7536 | ||
df07e2c7 AB |
7537 | delete tu_group->tus; |
7538 | tu_group->tus = nullptr; | |
348e048f DE |
7539 | |
7540 | return 1; | |
7541 | } | |
7542 | ||
7543 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7544 | Build partial symbol tables for the .debug_types comp-units. */ | |
7545 | ||
7546 | static void | |
ed2dc618 | 7547 | build_type_psymtabs (struct dwarf2_per_objfile *dwarf2_per_objfile) |
348e048f | 7548 | { |
ed2dc618 | 7549 | if (! create_all_type_units (dwarf2_per_objfile)) |
348e048f DE |
7550 | return; |
7551 | ||
ed2dc618 | 7552 | build_type_psymtabs_1 (dwarf2_per_objfile); |
6aa5f3a6 | 7553 | } |
f4dc4d17 | 7554 | |
6aa5f3a6 DE |
7555 | /* Traversal function for process_skeletonless_type_unit. |
7556 | Read a TU in a DWO file and build partial symbols for it. */ | |
7557 | ||
7558 | static int | |
7559 | process_skeletonless_type_unit (void **slot, void *info) | |
7560 | { | |
7561 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
ed2dc618 SM |
7562 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7563 | = (struct dwarf2_per_objfile *) info; | |
6aa5f3a6 DE |
7564 | struct signatured_type find_entry, *entry; |
7565 | ||
7566 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
7567 | ||
7568 | if (dwarf2_per_objfile->signatured_types == NULL) | |
298e9637 | 7569 | dwarf2_per_objfile->signatured_types = allocate_signatured_type_table (); |
6aa5f3a6 DE |
7570 | |
7571 | find_entry.signature = dwo_unit->signature; | |
b0b6a987 TT |
7572 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types.get (), |
7573 | &find_entry, INSERT); | |
6aa5f3a6 DE |
7574 | /* If we've already seen this type there's nothing to do. What's happening |
7575 | is we're doing our own version of comdat-folding here. */ | |
7576 | if (*slot != NULL) | |
7577 | return 1; | |
7578 | ||
7579 | /* This does the job that create_all_type_units would have done for | |
7580 | this TU. */ | |
ed2dc618 SM |
7581 | entry = add_type_unit (dwarf2_per_objfile, dwo_unit->signature, slot); |
7582 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
7583 | *slot = entry; |
7584 | ||
7585 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
6751ebae | 7586 | cutu_reader reader (&entry->per_cu, NULL, 0, false); |
c0ab21c2 TT |
7587 | if (!reader.dummy_p) |
7588 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7589 | reader.comp_unit_die); |
6aa5f3a6 DE |
7590 | |
7591 | return 1; | |
7592 | } | |
7593 | ||
7594 | /* Traversal function for process_skeletonless_type_units. */ | |
7595 | ||
7596 | static int | |
7597 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
7598 | { | |
7599 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
7600 | ||
7601 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
7602 | htab_traverse_noresize (dwo_file->tus.get (), |
7603 | process_skeletonless_type_unit, info); | |
6aa5f3a6 DE |
7604 | |
7605 | return 1; | |
7606 | } | |
7607 | ||
7608 | /* Scan all TUs of DWO files, verifying we've processed them. | |
7609 | This is needed in case a TU was emitted without its skeleton. | |
7610 | Note: This can't be done until we know what all the DWO files are. */ | |
7611 | ||
7612 | static void | |
ed2dc618 | 7613 | process_skeletonless_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
7614 | { |
7615 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
ed2dc618 | 7616 | if (get_dwp_file (dwarf2_per_objfile) == NULL |
6aa5f3a6 DE |
7617 | && dwarf2_per_objfile->dwo_files != NULL) |
7618 | { | |
51ac9db5 | 7619 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files.get (), |
6aa5f3a6 | 7620 | process_dwo_file_for_skeletonless_type_units, |
ed2dc618 | 7621 | dwarf2_per_objfile); |
6aa5f3a6 | 7622 | } |
348e048f DE |
7623 | } |
7624 | ||
ed2dc618 | 7625 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
7626 | |
7627 | static void | |
ed2dc618 | 7628 | set_partial_user (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 7629 | { |
b76e467d | 7630 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
95554aad | 7631 | { |
891813be | 7632 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 7633 | |
36586728 TT |
7634 | if (pst == NULL) |
7635 | continue; | |
7636 | ||
b76e467d | 7637 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
7638 | { |
7639 | /* Set the 'user' field only if it is not already set. */ | |
7640 | if (pst->dependencies[j]->user == NULL) | |
7641 | pst->dependencies[j]->user = pst; | |
7642 | } | |
7643 | } | |
7644 | } | |
7645 | ||
93311388 DE |
7646 | /* Build the partial symbol table by doing a quick pass through the |
7647 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 7648 | |
93311388 | 7649 | static void |
ed2dc618 | 7650 | dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile *dwarf2_per_objfile) |
93311388 | 7651 | { |
ed2dc618 | 7652 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
93311388 | 7653 | |
b4f54984 | 7654 | if (dwarf_read_debug) |
45cfd468 DE |
7655 | { |
7656 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 7657 | objfile_name (objfile)); |
45cfd468 DE |
7658 | } |
7659 | ||
76935768 TT |
7660 | scoped_restore restore_reading_psyms |
7661 | = make_scoped_restore (&dwarf2_per_objfile->reading_partial_symbols, | |
7662 | true); | |
98bfdba5 | 7663 | |
96b79293 | 7664 | dwarf2_per_objfile->info.read (objfile); |
91c24f0a | 7665 | |
93311388 DE |
7666 | /* Any cached compilation units will be linked by the per-objfile |
7667 | read_in_chain. Make sure to free them when we're done. */ | |
11ed8cad | 7668 | free_cached_comp_units freer (dwarf2_per_objfile); |
72bf9492 | 7669 | |
ed2dc618 | 7670 | build_type_psymtabs (dwarf2_per_objfile); |
348e048f | 7671 | |
ed2dc618 | 7672 | create_all_comp_units (dwarf2_per_objfile); |
c906108c | 7673 | |
60606b2c TT |
7674 | /* Create a temporary address map on a temporary obstack. We later |
7675 | copy this to the final obstack. */ | |
8268c778 | 7676 | auto_obstack temp_obstack; |
791afaa2 TT |
7677 | |
7678 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 7679 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 7680 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 7681 | |
b76e467d | 7682 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
135f5437 | 7683 | process_psymtab_comp_unit (per_cu, false, language_minimal); |
ff013f42 | 7684 | |
6aa5f3a6 | 7685 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
ed2dc618 | 7686 | process_skeletonless_type_units (dwarf2_per_objfile); |
6aa5f3a6 DE |
7687 | |
7688 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
7689 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
7690 | { | |
eaa5fa8b | 7691 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups.get (), |
ed2dc618 | 7692 | build_type_psymtab_dependencies, dwarf2_per_objfile); |
6aa5f3a6 DE |
7693 | } |
7694 | ||
b4f54984 | 7695 | if (dwarf_read_debug) |
ed2dc618 | 7696 | print_tu_stats (dwarf2_per_objfile); |
6aa5f3a6 | 7697 | |
ed2dc618 | 7698 | set_partial_user (dwarf2_per_objfile); |
95554aad | 7699 | |
d320c2b5 TT |
7700 | objfile->partial_symtabs->psymtabs_addrmap |
7701 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 7702 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
7703 | /* At this point we want to keep the address map. */ |
7704 | save_psymtabs_addrmap.release (); | |
ff013f42 | 7705 | |
b4f54984 | 7706 | if (dwarf_read_debug) |
45cfd468 | 7707 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 7708 | objfile_name (objfile)); |
ae038cb0 DJ |
7709 | } |
7710 | ||
dee91e82 DE |
7711 | /* Load the partial DIEs for a secondary CU into memory. |
7712 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 7713 | |
dee91e82 DE |
7714 | static void |
7715 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
7716 | { | |
6751ebae | 7717 | cutu_reader reader (this_cu, NULL, 1, false); |
c0ab21c2 TT |
7718 | |
7719 | if (!reader.dummy_p) | |
7720 | { | |
7721 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
7722 | language_minimal); | |
7723 | ||
7724 | /* Check if comp unit has_children. | |
7725 | If so, read the rest of the partial symbols from this comp unit. | |
7726 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7727 | if (reader.comp_unit_die->has_children) |
c0ab21c2 | 7728 | load_partial_dies (&reader, reader.info_ptr, 0); |
6751ebae TT |
7729 | |
7730 | reader.keep (); | |
c0ab21c2 | 7731 | } |
ae038cb0 DJ |
7732 | } |
7733 | ||
ae038cb0 | 7734 | static void |
ed2dc618 | 7735 | read_comp_units_from_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
36586728 | 7736 | struct dwarf2_section_info *section, |
f1902523 | 7737 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 7738 | unsigned int is_dwz) |
ae038cb0 | 7739 | { |
d521ce57 | 7740 | const gdb_byte *info_ptr; |
ed2dc618 | 7741 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
be391dca | 7742 | |
b4f54984 | 7743 | if (dwarf_read_debug) |
bf6af496 | 7744 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
96b79293 TT |
7745 | section->get_name (), |
7746 | section->get_file_name ()); | |
bf6af496 | 7747 | |
96b79293 | 7748 | section->read (objfile); |
ae038cb0 | 7749 | |
36586728 | 7750 | info_ptr = section->buffer; |
6e70227d | 7751 | |
36586728 | 7752 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 7753 | { |
ae038cb0 | 7754 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 7755 | |
9c541725 | 7756 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 7757 | |
f1902523 | 7758 | comp_unit_head cu_header; |
ed2dc618 SM |
7759 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
7760 | abbrev_section, info_ptr, | |
7761 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
7762 | |
7763 | /* Save the compilation unit for later lookup. */ | |
f1902523 JK |
7764 | if (cu_header.unit_type != DW_UT_type) |
7765 | { | |
7766 | this_cu = XOBNEW (&objfile->objfile_obstack, | |
7767 | struct dwarf2_per_cu_data); | |
7768 | memset (this_cu, 0, sizeof (*this_cu)); | |
7769 | } | |
7770 | else | |
7771 | { | |
7772 | auto sig_type = XOBNEW (&objfile->objfile_obstack, | |
7773 | struct signatured_type); | |
7774 | memset (sig_type, 0, sizeof (*sig_type)); | |
7775 | sig_type->signature = cu_header.signature; | |
7776 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
7777 | this_cu = &sig_type->per_cu; | |
7778 | } | |
7779 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 7780 | this_cu->sect_off = sect_off; |
f1902523 | 7781 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 7782 | this_cu->is_dwz = is_dwz; |
e3b94546 | 7783 | this_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
8a0459fd | 7784 | this_cu->section = section; |
ae038cb0 | 7785 | |
b76e467d | 7786 | dwarf2_per_objfile->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
7787 | |
7788 | info_ptr = info_ptr + this_cu->length; | |
7789 | } | |
36586728 TT |
7790 | } |
7791 | ||
7792 | /* Create a list of all compilation units in OBJFILE. | |
7793 | This is only done for -readnow and building partial symtabs. */ | |
7794 | ||
7795 | static void | |
ed2dc618 | 7796 | create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 7797 | { |
b76e467d | 7798 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
ed2dc618 | 7799 | read_comp_units_from_section (dwarf2_per_objfile, &dwarf2_per_objfile->info, |
b76e467d | 7800 | &dwarf2_per_objfile->abbrev, 0); |
36586728 | 7801 | |
b76e467d | 7802 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 7803 | if (dwz != NULL) |
ed2dc618 | 7804 | read_comp_units_from_section (dwarf2_per_objfile, &dwz->info, &dwz->abbrev, |
b76e467d | 7805 | 1); |
c906108c SS |
7806 | } |
7807 | ||
5734ee8b | 7808 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 7809 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 7810 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
7811 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
7812 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 7813 | |
72bf9492 DJ |
7814 | static void |
7815 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
7816 | CORE_ADDR *highpc, int set_addrmap, |
7817 | struct dwarf2_cu *cu) | |
c906108c | 7818 | { |
72bf9492 | 7819 | struct partial_die_info *pdi; |
c906108c | 7820 | |
91c24f0a DC |
7821 | /* Now, march along the PDI's, descending into ones which have |
7822 | interesting children but skipping the children of the other ones, | |
7823 | until we reach the end of the compilation unit. */ | |
c906108c | 7824 | |
72bf9492 | 7825 | pdi = first_die; |
91c24f0a | 7826 | |
72bf9492 DJ |
7827 | while (pdi != NULL) |
7828 | { | |
52356b79 | 7829 | pdi->fixup (cu); |
c906108c | 7830 | |
f55ee35c | 7831 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
7832 | children, so we need to look at them. Ditto for anonymous |
7833 | enums. */ | |
933c6fe4 | 7834 | |
72bf9492 | 7835 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 7836 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
7837 | || pdi->tag == DW_TAG_imported_unit |
7838 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 7839 | { |
72bf9492 | 7840 | switch (pdi->tag) |
c906108c SS |
7841 | { |
7842 | case DW_TAG_subprogram: | |
b1dc1806 | 7843 | case DW_TAG_inlined_subroutine: |
cdc07690 | 7844 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 7845 | break; |
72929c62 | 7846 | case DW_TAG_constant: |
c906108c SS |
7847 | case DW_TAG_variable: |
7848 | case DW_TAG_typedef: | |
91c24f0a | 7849 | case DW_TAG_union_type: |
72bf9492 | 7850 | if (!pdi->is_declaration) |
63d06c5c | 7851 | { |
72bf9492 | 7852 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
7853 | } |
7854 | break; | |
c906108c | 7855 | case DW_TAG_class_type: |
680b30c7 | 7856 | case DW_TAG_interface_type: |
c906108c | 7857 | case DW_TAG_structure_type: |
72bf9492 | 7858 | if (!pdi->is_declaration) |
c906108c | 7859 | { |
72bf9492 | 7860 | add_partial_symbol (pdi, cu); |
c906108c | 7861 | } |
b7fee5a3 KS |
7862 | if ((cu->language == language_rust |
7863 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
7864 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
7865 | set_addrmap, cu); | |
c906108c | 7866 | break; |
91c24f0a | 7867 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
7868 | if (!pdi->is_declaration) |
7869 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
7870 | break; |
7871 | case DW_TAG_base_type: | |
a02abb62 | 7872 | case DW_TAG_subrange_type: |
c906108c | 7873 | /* File scope base type definitions are added to the partial |
c5aa993b | 7874 | symbol table. */ |
72bf9492 | 7875 | add_partial_symbol (pdi, cu); |
c906108c | 7876 | break; |
d9fa45fe | 7877 | case DW_TAG_namespace: |
cdc07690 | 7878 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 7879 | break; |
5d7cb8df | 7880 | case DW_TAG_module: |
59c35742 AB |
7881 | if (!pdi->is_declaration) |
7882 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 7883 | break; |
95554aad TT |
7884 | case DW_TAG_imported_unit: |
7885 | { | |
7886 | struct dwarf2_per_cu_data *per_cu; | |
7887 | ||
f4dc4d17 DE |
7888 | /* For now we don't handle imported units in type units. */ |
7889 | if (cu->per_cu->is_debug_types) | |
7890 | { | |
7891 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
7892 | " supported in type units [in module %s]"), | |
518817b3 | 7893 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
7894 | } |
7895 | ||
e3b94546 SM |
7896 | per_cu = dwarf2_find_containing_comp_unit |
7897 | (pdi->d.sect_off, pdi->is_dwz, | |
518817b3 | 7898 | cu->per_cu->dwarf2_per_objfile); |
95554aad TT |
7899 | |
7900 | /* Go read the partial unit, if needed. */ | |
7901 | if (per_cu->v.psymtab == NULL) | |
135f5437 | 7902 | process_psymtab_comp_unit (per_cu, true, cu->language); |
95554aad | 7903 | |
ae640021 | 7904 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
7905 | } |
7906 | break; | |
74921315 KS |
7907 | case DW_TAG_imported_declaration: |
7908 | add_partial_symbol (pdi, cu); | |
7909 | break; | |
c906108c SS |
7910 | default: |
7911 | break; | |
7912 | } | |
7913 | } | |
7914 | ||
72bf9492 DJ |
7915 | /* If the die has a sibling, skip to the sibling. */ |
7916 | ||
7917 | pdi = pdi->die_sibling; | |
7918 | } | |
7919 | } | |
7920 | ||
7921 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 7922 | |
72bf9492 | 7923 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 7924 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
7925 | Enumerators are an exception; they use the scope of their parent |
7926 | enumeration type, i.e. the name of the enumeration type is not | |
7927 | prepended to the enumerator. | |
91c24f0a | 7928 | |
72bf9492 DJ |
7929 | There are two complexities. One is DW_AT_specification; in this |
7930 | case "parent" means the parent of the target of the specification, | |
7931 | instead of the direct parent of the DIE. The other is compilers | |
7932 | which do not emit DW_TAG_namespace; in this case we try to guess | |
7933 | the fully qualified name of structure types from their members' | |
7934 | linkage names. This must be done using the DIE's children rather | |
7935 | than the children of any DW_AT_specification target. We only need | |
7936 | to do this for structures at the top level, i.e. if the target of | |
7937 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
7938 | have a parent. */ | |
7939 | ||
7940 | /* Compute the scope prefix associated with PDI's parent, in | |
7941 | compilation unit CU. The result will be allocated on CU's | |
7942 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
7943 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 7944 | static const char * |
72bf9492 DJ |
7945 | partial_die_parent_scope (struct partial_die_info *pdi, |
7946 | struct dwarf2_cu *cu) | |
7947 | { | |
15d034d0 | 7948 | const char *grandparent_scope; |
72bf9492 | 7949 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 7950 | |
72bf9492 DJ |
7951 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
7952 | then this means the parent of the specification DIE. */ | |
7953 | ||
7954 | real_pdi = pdi; | |
72bf9492 | 7955 | while (real_pdi->has_specification) |
fb816e8b | 7956 | { |
122cf0f2 AB |
7957 | auto res = find_partial_die (real_pdi->spec_offset, |
7958 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
7959 | real_pdi = res.pdi; |
7960 | cu = res.cu; | |
7961 | } | |
72bf9492 DJ |
7962 | |
7963 | parent = real_pdi->die_parent; | |
7964 | if (parent == NULL) | |
7965 | return NULL; | |
7966 | ||
7967 | if (parent->scope_set) | |
7968 | return parent->scope; | |
7969 | ||
52356b79 | 7970 | parent->fixup (cu); |
72bf9492 | 7971 | |
10b3939b | 7972 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 7973 | |
acebe513 UW |
7974 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
7975 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
7976 | Work around this problem here. */ | |
7977 | if (cu->language == language_cplus | |
6e70227d | 7978 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
7979 | && strcmp (parent->name, "::") == 0 |
7980 | && grandparent_scope == NULL) | |
7981 | { | |
7982 | parent->scope = NULL; | |
7983 | parent->scope_set = 1; | |
7984 | return NULL; | |
7985 | } | |
7986 | ||
0a4b0913 | 7987 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
7988 | if (pdi->tag == DW_TAG_enumerator) |
7989 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
7990 | parent->scope = grandparent_scope; | |
7991 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 7992 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
7993 | || parent->tag == DW_TAG_structure_type |
7994 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 7995 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 7996 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
7997 | || parent->tag == DW_TAG_enumeration_type |
7998 | || (cu->language == language_fortran | |
7999 | && parent->tag == DW_TAG_subprogram | |
8000 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8001 | { |
8002 | if (grandparent_scope == NULL) | |
8003 | parent->scope = parent->name; | |
8004 | else | |
3e43a32a MS |
8005 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8006 | grandparent_scope, | |
f55ee35c | 8007 | parent->name, 0, cu); |
72bf9492 | 8008 | } |
72bf9492 DJ |
8009 | else |
8010 | { | |
8011 | /* FIXME drow/2004-04-01: What should we be doing with | |
8012 | function-local names? For partial symbols, we should probably be | |
8013 | ignoring them. */ | |
fa9c3fa0 TT |
8014 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8015 | dwarf_tag_name (parent->tag), | |
8016 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8017 | parent->scope = grandparent_scope; |
c906108c SS |
8018 | } |
8019 | ||
72bf9492 DJ |
8020 | parent->scope_set = 1; |
8021 | return parent->scope; | |
8022 | } | |
8023 | ||
8024 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8025 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8026 | |
43816ebc | 8027 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8028 | partial_die_full_name (struct partial_die_info *pdi, |
8029 | struct dwarf2_cu *cu) | |
8030 | { | |
15d034d0 | 8031 | const char *parent_scope; |
72bf9492 | 8032 | |
98bfdba5 PA |
8033 | /* If this is a template instantiation, we can not work out the |
8034 | template arguments from partial DIEs. So, unfortunately, we have | |
8035 | to go through the full DIEs. At least any work we do building | |
8036 | types here will be reused if full symbols are loaded later. */ | |
8037 | if (pdi->has_template_arguments) | |
8038 | { | |
52356b79 | 8039 | pdi->fixup (cu); |
98bfdba5 PA |
8040 | |
8041 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
8042 | { | |
8043 | struct die_info *die; | |
8044 | struct attribute attr; | |
8045 | struct dwarf2_cu *ref_cu = cu; | |
8046 | ||
b64f50a1 | 8047 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8048 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8049 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8050 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8051 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8052 | ||
43816ebc | 8053 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8054 | } |
8055 | } | |
8056 | ||
72bf9492 DJ |
8057 | parent_scope = partial_die_parent_scope (pdi, cu); |
8058 | if (parent_scope == NULL) | |
8059 | return NULL; | |
8060 | else | |
43816ebc TT |
8061 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
8062 | pdi->name, 0, cu)); | |
c906108c SS |
8063 | } |
8064 | ||
8065 | static void | |
72bf9492 | 8066 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8067 | { |
518817b3 SM |
8068 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8069 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 8070 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 8071 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 8072 | CORE_ADDR addr = 0; |
15d034d0 | 8073 | const char *actual_name = NULL; |
e142c38c DJ |
8074 | CORE_ADDR baseaddr; |
8075 | ||
b3b3bada | 8076 | baseaddr = objfile->text_section_offset (); |
c906108c | 8077 | |
43816ebc TT |
8078 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8079 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8080 | if (built_actual_name != NULL) |
43816ebc | 8081 | actual_name = built_actual_name.get (); |
63d06c5c | 8082 | |
72bf9492 DJ |
8083 | if (actual_name == NULL) |
8084 | actual_name = pdi->name; | |
8085 | ||
c906108c SS |
8086 | switch (pdi->tag) |
8087 | { | |
b1dc1806 | 8088 | case DW_TAG_inlined_subroutine: |
c906108c | 8089 | case DW_TAG_subprogram: |
79748972 TT |
8090 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8091 | - baseaddr); | |
0a4b0913 AB |
8092 | if (pdi->is_external |
8093 | || cu->language == language_ada | |
8094 | || (cu->language == language_fortran | |
8095 | && pdi->die_parent != NULL | |
8096 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8097 | { | |
8098 | /* Normally, only "external" DIEs are part of the global scope. | |
8099 | But in Ada and Fortran, we want to be able to access nested | |
8100 | procedures globally. So all Ada and Fortran subprograms are | |
8101 | stored in the global scope. */ | |
31edb802 | 8102 | add_psymbol_to_list (actual_name, |
15d034d0 | 8103 | built_actual_name != NULL, |
f47fb265 | 8104 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8105 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8106 | psymbol_placement::GLOBAL, |
79748972 TT |
8107 | addr, |
8108 | cu->language, objfile); | |
c906108c SS |
8109 | } |
8110 | else | |
8111 | { | |
31edb802 | 8112 | add_psymbol_to_list (actual_name, |
15d034d0 | 8113 | built_actual_name != NULL, |
f47fb265 | 8114 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8115 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8116 | psymbol_placement::STATIC, |
1762568f | 8117 | addr, cu->language, objfile); |
c906108c | 8118 | } |
0c1b455e TT |
8119 | |
8120 | if (pdi->main_subprogram && actual_name != NULL) | |
8121 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8122 | break; |
72929c62 | 8123 | case DW_TAG_constant: |
31edb802 | 8124 | add_psymbol_to_list (actual_name, |
75aedd27 TT |
8125 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
8126 | -1, (pdi->is_external | |
8127 | ? psymbol_placement::GLOBAL | |
8128 | : psymbol_placement::STATIC), | |
8129 | 0, cu->language, objfile); | |
72929c62 | 8130 | break; |
c906108c | 8131 | case DW_TAG_variable: |
95554aad TT |
8132 | if (pdi->d.locdesc) |
8133 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8134 | |
95554aad | 8135 | if (pdi->d.locdesc |
caac4577 JG |
8136 | && addr == 0 |
8137 | && !dwarf2_per_objfile->has_section_at_zero) | |
8138 | { | |
8139 | /* A global or static variable may also have been stripped | |
8140 | out by the linker if unused, in which case its address | |
8141 | will be nullified; do not add such variables into partial | |
8142 | symbol table then. */ | |
8143 | } | |
8144 | else if (pdi->is_external) | |
c906108c SS |
8145 | { |
8146 | /* Global Variable. | |
8147 | Don't enter into the minimal symbol tables as there is | |
8148 | a minimal symbol table entry from the ELF symbols already. | |
8149 | Enter into partial symbol table if it has a location | |
8150 | descriptor or a type. | |
8151 | If the location descriptor is missing, new_symbol will create | |
8152 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8153 | be determined from the minimal symbol table whenever the variable | |
8154 | is referenced. | |
8155 | The address for the partial symbol table entry is not | |
8156 | used by GDB, but it comes in handy for debugging partial symbol | |
8157 | table building. */ | |
8158 | ||
95554aad | 8159 | if (pdi->d.locdesc || pdi->has_type) |
31edb802 | 8160 | add_psymbol_to_list (actual_name, |
15d034d0 | 8161 | built_actual_name != NULL, |
f47fb265 | 8162 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 8163 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8164 | psymbol_placement::GLOBAL, |
79748972 | 8165 | addr, cu->language, objfile); |
c906108c SS |
8166 | } |
8167 | else | |
8168 | { | |
ff908ebf AW |
8169 | int has_loc = pdi->d.locdesc != NULL; |
8170 | ||
8171 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8172 | without location descriptors or constant values). */ | |
8173 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8174 | return; |
ff908ebf | 8175 | |
31edb802 | 8176 | add_psymbol_to_list (actual_name, |
15d034d0 | 8177 | built_actual_name != NULL, |
f47fb265 | 8178 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 8179 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8180 | psymbol_placement::STATIC, |
79748972 | 8181 | has_loc ? addr : 0, |
f47fb265 | 8182 | cu->language, objfile); |
c906108c SS |
8183 | } |
8184 | break; | |
8185 | case DW_TAG_typedef: | |
8186 | case DW_TAG_base_type: | |
a02abb62 | 8187 | case DW_TAG_subrange_type: |
31edb802 | 8188 | add_psymbol_to_list (actual_name, |
15d034d0 | 8189 | built_actual_name != NULL, |
79748972 | 8190 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 8191 | psymbol_placement::STATIC, |
1762568f | 8192 | 0, cu->language, objfile); |
c906108c | 8193 | break; |
74921315 | 8194 | case DW_TAG_imported_declaration: |
72bf9492 | 8195 | case DW_TAG_namespace: |
31edb802 | 8196 | add_psymbol_to_list (actual_name, |
15d034d0 | 8197 | built_actual_name != NULL, |
79748972 | 8198 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 8199 | psymbol_placement::GLOBAL, |
1762568f | 8200 | 0, cu->language, objfile); |
72bf9492 | 8201 | break; |
530e8392 | 8202 | case DW_TAG_module: |
a5fd13a9 BH |
8203 | /* With Fortran 77 there might be a "BLOCK DATA" module |
8204 | available without any name. If so, we skip the module as it | |
8205 | doesn't bring any value. */ | |
8206 | if (actual_name != nullptr) | |
31edb802 | 8207 | add_psymbol_to_list (actual_name, |
a5fd13a9 BH |
8208 | built_actual_name != NULL, |
8209 | MODULE_DOMAIN, LOC_TYPEDEF, -1, | |
8210 | psymbol_placement::GLOBAL, | |
8211 | 0, cu->language, objfile); | |
530e8392 | 8212 | break; |
c906108c | 8213 | case DW_TAG_class_type: |
680b30c7 | 8214 | case DW_TAG_interface_type: |
c906108c SS |
8215 | case DW_TAG_structure_type: |
8216 | case DW_TAG_union_type: | |
8217 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
8218 | /* Skip external references. The DWARF standard says in the section |
8219 | about "Structure, Union, and Class Type Entries": "An incomplete | |
8220 | structure, union or class type is represented by a structure, | |
8221 | union or class entry that does not have a byte size attribute | |
8222 | and that has a DW_AT_declaration attribute." */ | |
8223 | if (!pdi->has_byte_size && pdi->is_declaration) | |
43816ebc | 8224 | return; |
fa4028e9 | 8225 | |
63d06c5c DC |
8226 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8227 | static vs. global. */ | |
31edb802 | 8228 | add_psymbol_to_list (actual_name, |
15d034d0 | 8229 | built_actual_name != NULL, |
79748972 | 8230 | STRUCT_DOMAIN, LOC_TYPEDEF, -1, |
9c37b5ae | 8231 | cu->language == language_cplus |
75aedd27 TT |
8232 | ? psymbol_placement::GLOBAL |
8233 | : psymbol_placement::STATIC, | |
1762568f | 8234 | 0, cu->language, objfile); |
c906108c | 8235 | |
c906108c SS |
8236 | break; |
8237 | case DW_TAG_enumerator: | |
31edb802 | 8238 | add_psymbol_to_list (actual_name, |
15d034d0 | 8239 | built_actual_name != NULL, |
79748972 | 8240 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 8241 | cu->language == language_cplus |
75aedd27 TT |
8242 | ? psymbol_placement::GLOBAL |
8243 | : psymbol_placement::STATIC, | |
1762568f | 8244 | 0, cu->language, objfile); |
c906108c SS |
8245 | break; |
8246 | default: | |
8247 | break; | |
8248 | } | |
8249 | } | |
8250 | ||
5c4e30ca DC |
8251 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8252 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8253 | the name of the enclosing namespace. */ | |
91c24f0a | 8254 | |
72bf9492 DJ |
8255 | static void |
8256 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8257 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8258 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8259 | { |
72bf9492 | 8260 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8261 | |
72bf9492 | 8262 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8263 | |
8264 | /* Now scan partial symbols in that namespace. */ | |
8265 | ||
91c24f0a | 8266 | if (pdi->has_children) |
cdc07690 | 8267 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8268 | } |
8269 | ||
5d7cb8df JK |
8270 | /* Read a partial die corresponding to a Fortran module. */ |
8271 | ||
8272 | static void | |
8273 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8274 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8275 | { |
530e8392 KB |
8276 | /* Add a symbol for the namespace. */ |
8277 | ||
8278 | add_partial_symbol (pdi, cu); | |
8279 | ||
f55ee35c | 8280 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8281 | |
8282 | if (pdi->has_children) | |
cdc07690 | 8283 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8284 | } |
8285 | ||
b1dc1806 XR |
8286 | /* Read a partial die corresponding to a subprogram or an inlined |
8287 | subprogram and create a partial symbol for that subprogram. | |
8288 | When the CU language allows it, this routine also defines a partial | |
8289 | symbol for each nested subprogram that this subprogram contains. | |
8290 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8291 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8292 | |
cdc07690 YQ |
8293 | PDI may also be a lexical block, in which case we simply search |
8294 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8295 | Again, this is only performed when the CU language allows this |
8296 | type of definitions. */ | |
8297 | ||
8298 | static void | |
8299 | add_partial_subprogram (struct partial_die_info *pdi, | |
8300 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8301 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8302 | { |
b1dc1806 | 8303 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8304 | { |
8305 | if (pdi->has_pc_info) | |
8306 | { | |
8307 | if (pdi->lowpc < *lowpc) | |
8308 | *lowpc = pdi->lowpc; | |
8309 | if (pdi->highpc > *highpc) | |
8310 | *highpc = pdi->highpc; | |
cdc07690 | 8311 | if (set_addrmap) |
5734ee8b | 8312 | { |
518817b3 | 8313 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a MR |
8314 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
8315 | CORE_ADDR baseaddr; | |
b926417a TT |
8316 | CORE_ADDR this_highpc; |
8317 | CORE_ADDR this_lowpc; | |
5734ee8b | 8318 | |
b3b3bada | 8319 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8320 | this_lowpc |
8321 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8322 | pdi->lowpc + baseaddr) | |
8323 | - baseaddr); | |
8324 | this_highpc | |
8325 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8326 | pdi->highpc + baseaddr) | |
8327 | - baseaddr); | |
d320c2b5 | 8328 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 8329 | this_lowpc, this_highpc - 1, |
9291a0cd | 8330 | cu->per_cu->v.psymtab); |
5734ee8b | 8331 | } |
481860b3 GB |
8332 | } |
8333 | ||
8334 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8335 | { | |
bc30ff58 | 8336 | if (!pdi->is_declaration) |
e8d05480 JB |
8337 | /* Ignore subprogram DIEs that do not have a name, they are |
8338 | illegal. Do not emit a complaint at this point, we will | |
8339 | do so when we convert this psymtab into a symtab. */ | |
8340 | if (pdi->name) | |
8341 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
8342 | } |
8343 | } | |
6e70227d | 8344 | |
bc30ff58 JB |
8345 | if (! pdi->has_children) |
8346 | return; | |
8347 | ||
0a4b0913 | 8348 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8349 | { |
8350 | pdi = pdi->die_child; | |
8351 | while (pdi != NULL) | |
8352 | { | |
52356b79 | 8353 | pdi->fixup (cu); |
bc30ff58 | 8354 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8355 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8356 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8357 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8358 | pdi = pdi->die_sibling; |
8359 | } | |
8360 | } | |
8361 | } | |
8362 | ||
91c24f0a DC |
8363 | /* Read a partial die corresponding to an enumeration type. */ |
8364 | ||
72bf9492 DJ |
8365 | static void |
8366 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8367 | struct dwarf2_cu *cu) | |
91c24f0a | 8368 | { |
72bf9492 | 8369 | struct partial_die_info *pdi; |
91c24f0a DC |
8370 | |
8371 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
8372 | add_partial_symbol (enum_pdi, cu); |
8373 | ||
8374 | pdi = enum_pdi->die_child; | |
8375 | while (pdi) | |
91c24f0a | 8376 | { |
72bf9492 | 8377 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
b98664d3 | 8378 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8379 | else |
72bf9492 DJ |
8380 | add_partial_symbol (pdi, cu); |
8381 | pdi = pdi->die_sibling; | |
91c24f0a | 8382 | } |
91c24f0a DC |
8383 | } |
8384 | ||
6caca83c CC |
8385 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8386 | ||
8387 | static unsigned int | |
d521ce57 | 8388 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8389 | { |
8390 | unsigned int bytes_read; | |
8391 | ||
8392 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8393 | } | |
8394 | ||
685af9cd TT |
8395 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8396 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8397 | ||
4bb7a0a7 DJ |
8398 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8399 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8400 | the initial number. */ | |
8401 | ||
8402 | static struct abbrev_info * | |
685af9cd TT |
8403 | peek_die_abbrev (const die_reader_specs &reader, |
8404 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8405 | { |
685af9cd | 8406 | dwarf2_cu *cu = reader.cu; |
518817b3 | 8407 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
685af9cd TT |
8408 | unsigned int abbrev_number |
8409 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8410 | |
8411 | if (abbrev_number == 0) | |
8412 | return NULL; | |
8413 | ||
685af9cd | 8414 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
8415 | if (!abbrev) |
8416 | { | |
422b9917 | 8417 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8418 | " at offset %s [in module %s]"), |
422b9917 | 8419 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8420 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8421 | } |
8422 | ||
8423 | return abbrev; | |
8424 | } | |
8425 | ||
93311388 DE |
8426 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8427 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8428 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8429 | ||
d521ce57 TT |
8430 | static const gdb_byte * |
8431 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8432 | { |
4bb7a0a7 DJ |
8433 | while (1) |
8434 | { | |
685af9cd TT |
8435 | unsigned int bytes_read; |
8436 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
8437 | ||
4bb7a0a7 DJ |
8438 | if (abbrev == NULL) |
8439 | return info_ptr + bytes_read; | |
8440 | else | |
dee91e82 | 8441 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8442 | } |
8443 | } | |
8444 | ||
93311388 DE |
8445 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8446 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8447 | abbrev corresponding to that skipped uleb128 should be passed in |
8448 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8449 | children. */ | |
8450 | ||
d521ce57 TT |
8451 | static const gdb_byte * |
8452 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 8453 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8454 | { |
8455 | unsigned int bytes_read; | |
8456 | struct attribute attr; | |
dee91e82 DE |
8457 | bfd *abfd = reader->abfd; |
8458 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8459 | const gdb_byte *buffer = reader->buffer; |
f664829e | 8460 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
8461 | unsigned int form, i; |
8462 | ||
8463 | for (i = 0; i < abbrev->num_attrs; i++) | |
8464 | { | |
8465 | /* The only abbrev we care about is DW_AT_sibling. */ | |
8466 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
8467 | { | |
18a8505e AT |
8468 | bool ignored; |
8469 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr, | |
8470 | &ignored); | |
4bb7a0a7 | 8471 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 8472 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 8473 | else |
b9502d3f | 8474 | { |
0826b30a | 8475 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 8476 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
8477 | |
8478 | if (sibling_ptr < info_ptr) | |
b98664d3 | 8479 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 8480 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 8481 | reader->die_section->overflow_complaint (); |
b9502d3f WN |
8482 | else |
8483 | return sibling_ptr; | |
8484 | } | |
4bb7a0a7 DJ |
8485 | } |
8486 | ||
8487 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
8488 | form = abbrev->attrs[i].form; | |
8489 | skip_attribute: | |
8490 | switch (form) | |
8491 | { | |
4bb7a0a7 | 8492 | case DW_FORM_ref_addr: |
ae411497 TT |
8493 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
8494 | and later it is offset sized. */ | |
8495 | if (cu->header.version == 2) | |
8496 | info_ptr += cu->header.addr_size; | |
8497 | else | |
8498 | info_ptr += cu->header.offset_size; | |
8499 | break; | |
36586728 TT |
8500 | case DW_FORM_GNU_ref_alt: |
8501 | info_ptr += cu->header.offset_size; | |
8502 | break; | |
ae411497 | 8503 | case DW_FORM_addr: |
4bb7a0a7 DJ |
8504 | info_ptr += cu->header.addr_size; |
8505 | break; | |
8506 | case DW_FORM_data1: | |
8507 | case DW_FORM_ref1: | |
8508 | case DW_FORM_flag: | |
8fe0f950 | 8509 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
8510 | info_ptr += 1; |
8511 | break; | |
2dc7f7b3 | 8512 | case DW_FORM_flag_present: |
43988095 | 8513 | case DW_FORM_implicit_const: |
2dc7f7b3 | 8514 | break; |
4bb7a0a7 DJ |
8515 | case DW_FORM_data2: |
8516 | case DW_FORM_ref2: | |
8fe0f950 | 8517 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
8518 | info_ptr += 2; |
8519 | break; | |
8fe0f950 AT |
8520 | case DW_FORM_strx3: |
8521 | info_ptr += 3; | |
8522 | break; | |
4bb7a0a7 DJ |
8523 | case DW_FORM_data4: |
8524 | case DW_FORM_ref4: | |
8fe0f950 | 8525 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
8526 | info_ptr += 4; |
8527 | break; | |
8528 | case DW_FORM_data8: | |
8529 | case DW_FORM_ref8: | |
55f1336d | 8530 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
8531 | info_ptr += 8; |
8532 | break; | |
0224619f JK |
8533 | case DW_FORM_data16: |
8534 | info_ptr += 16; | |
8535 | break; | |
4bb7a0a7 | 8536 | case DW_FORM_string: |
9b1c24c8 | 8537 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
8538 | info_ptr += bytes_read; |
8539 | break; | |
2dc7f7b3 | 8540 | case DW_FORM_sec_offset: |
4bb7a0a7 | 8541 | case DW_FORM_strp: |
36586728 | 8542 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
8543 | info_ptr += cu->header.offset_size; |
8544 | break; | |
2dc7f7b3 | 8545 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
8546 | case DW_FORM_block: |
8547 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8548 | info_ptr += bytes_read; | |
8549 | break; | |
8550 | case DW_FORM_block1: | |
8551 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
8552 | break; | |
8553 | case DW_FORM_block2: | |
8554 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
8555 | break; | |
8556 | case DW_FORM_block4: | |
8557 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
8558 | break; | |
336d760d | 8559 | case DW_FORM_addrx: |
cf532bd1 | 8560 | case DW_FORM_strx: |
4bb7a0a7 DJ |
8561 | case DW_FORM_sdata: |
8562 | case DW_FORM_udata: | |
8563 | case DW_FORM_ref_udata: | |
3019eac3 DE |
8564 | case DW_FORM_GNU_addr_index: |
8565 | case DW_FORM_GNU_str_index: | |
18a8505e | 8566 | case DW_FORM_rnglistx: |
d521ce57 | 8567 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
8568 | break; |
8569 | case DW_FORM_indirect: | |
8570 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8571 | info_ptr += bytes_read; | |
8572 | /* We need to continue parsing from here, so just go back to | |
8573 | the top. */ | |
8574 | goto skip_attribute; | |
8575 | ||
8576 | default: | |
3e43a32a MS |
8577 | error (_("Dwarf Error: Cannot handle %s " |
8578 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
8579 | dwarf_form_name (form), |
8580 | bfd_get_filename (abfd)); | |
8581 | } | |
8582 | } | |
8583 | ||
8584 | if (abbrev->has_children) | |
dee91e82 | 8585 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
8586 | else |
8587 | return info_ptr; | |
8588 | } | |
8589 | ||
93311388 | 8590 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 8591 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 8592 | |
d521ce57 | 8593 | static const gdb_byte * |
dee91e82 DE |
8594 | locate_pdi_sibling (const struct die_reader_specs *reader, |
8595 | struct partial_die_info *orig_pdi, | |
d521ce57 | 8596 | const gdb_byte *info_ptr) |
91c24f0a DC |
8597 | { |
8598 | /* Do we know the sibling already? */ | |
72bf9492 | 8599 | |
91c24f0a DC |
8600 | if (orig_pdi->sibling) |
8601 | return orig_pdi->sibling; | |
8602 | ||
8603 | /* Are there any children to deal with? */ | |
8604 | ||
8605 | if (!orig_pdi->has_children) | |
8606 | return info_ptr; | |
8607 | ||
4bb7a0a7 | 8608 | /* Skip the children the long way. */ |
91c24f0a | 8609 | |
dee91e82 | 8610 | return skip_children (reader, info_ptr); |
91c24f0a DC |
8611 | } |
8612 | ||
257e7a09 | 8613 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 8614 | not NULL. */ |
c906108c | 8615 | |
891813be TT |
8616 | void |
8617 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 8618 | { |
ed2dc618 SM |
8619 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8620 | = get_dwarf2_per_objfile (objfile); | |
8621 | ||
077cbab2 TT |
8622 | gdb_assert (!readin); |
8623 | /* If this psymtab is constructed from a debug-only objfile, the | |
8624 | has_section_at_zero flag will not necessarily be correct. We | |
8625 | can get the correct value for this flag by looking at the data | |
8626 | associated with the (presumably stripped) associated objfile. */ | |
8627 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 8628 | { |
077cbab2 TT |
8629 | struct dwarf2_per_objfile *dpo_backlink |
8630 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); | |
c906108c | 8631 | |
077cbab2 TT |
8632 | dwarf2_per_objfile->has_section_at_zero |
8633 | = dpo_backlink->has_section_at_zero; | |
8634 | } | |
98bfdba5 | 8635 | |
8566b89b | 8636 | expand_psymtab (objfile); |
95554aad | 8637 | |
ed2dc618 | 8638 | process_cu_includes (dwarf2_per_objfile); |
c906108c | 8639 | } |
9cdd5dbd DE |
8640 | \f |
8641 | /* Reading in full CUs. */ | |
c906108c | 8642 | |
10b3939b DJ |
8643 | /* Add PER_CU to the queue. */ |
8644 | ||
8645 | static void | |
95554aad TT |
8646 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
8647 | enum language pretend_language) | |
10b3939b | 8648 | { |
10b3939b | 8649 | per_cu->queued = 1; |
39856def | 8650 | per_cu->dwarf2_per_objfile->queue.emplace (per_cu, pretend_language); |
10b3939b DJ |
8651 | } |
8652 | ||
89e63ee4 DE |
8653 | /* If PER_CU is not yet queued, add it to the queue. |
8654 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
8655 | dependency. | |
0907af0c | 8656 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
8657 | meaning either PER_CU is already queued or it is already loaded. |
8658 | ||
8659 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
8660 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
8661 | |
8662 | static int | |
89e63ee4 | 8663 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
8664 | struct dwarf2_per_cu_data *per_cu, |
8665 | enum language pretend_language) | |
8666 | { | |
8667 | /* We may arrive here during partial symbol reading, if we need full | |
8668 | DIEs to process an unusual case (e.g. template arguments). Do | |
8669 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
ed2dc618 | 8670 | if (per_cu->dwarf2_per_objfile->reading_partial_symbols) |
0907af0c DE |
8671 | { |
8672 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
8673 | return 1; | |
8674 | return 0; | |
8675 | } | |
8676 | ||
8677 | /* Mark the dependence relation so that we don't flush PER_CU | |
8678 | too early. */ | |
89e63ee4 DE |
8679 | if (dependent_cu != NULL) |
8680 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
8681 | |
8682 | /* If it's already on the queue, we have nothing to do. */ | |
8683 | if (per_cu->queued) | |
8684 | return 0; | |
8685 | ||
8686 | /* If the compilation unit is already loaded, just mark it as | |
8687 | used. */ | |
8688 | if (per_cu->cu != NULL) | |
8689 | { | |
8690 | per_cu->cu->last_used = 0; | |
8691 | return 0; | |
8692 | } | |
8693 | ||
8694 | /* Add it to the queue. */ | |
8695 | queue_comp_unit (per_cu, pretend_language); | |
8696 | ||
8697 | return 1; | |
8698 | } | |
8699 | ||
10b3939b DJ |
8700 | /* Process the queue. */ |
8701 | ||
8702 | static void | |
ed2dc618 | 8703 | process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile) |
10b3939b | 8704 | { |
b4f54984 | 8705 | if (dwarf_read_debug) |
45cfd468 DE |
8706 | { |
8707 | fprintf_unfiltered (gdb_stdlog, | |
8708 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 8709 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
8710 | } |
8711 | ||
03dd20cc DJ |
8712 | /* The queue starts out with one item, but following a DIE reference |
8713 | may load a new CU, adding it to the end of the queue. */ | |
39856def | 8714 | while (!dwarf2_per_objfile->queue.empty ()) |
10b3939b | 8715 | { |
39856def TT |
8716 | dwarf2_queue_item &item = dwarf2_per_objfile->queue.front (); |
8717 | ||
cc12ce38 | 8718 | if ((dwarf2_per_objfile->using_index |
39856def TT |
8719 | ? !item.per_cu->v.quick->compunit_symtab |
8720 | : (item.per_cu->v.psymtab && !item.per_cu->v.psymtab->readin)) | |
cc12ce38 | 8721 | /* Skip dummy CUs. */ |
39856def | 8722 | && item.per_cu->cu != NULL) |
f4dc4d17 | 8723 | { |
39856def | 8724 | struct dwarf2_per_cu_data *per_cu = item.per_cu; |
73be47f5 | 8725 | unsigned int debug_print_threshold; |
247f5c4f | 8726 | char buf[100]; |
f4dc4d17 | 8727 | |
247f5c4f | 8728 | if (per_cu->is_debug_types) |
f4dc4d17 | 8729 | { |
247f5c4f DE |
8730 | struct signatured_type *sig_type = |
8731 | (struct signatured_type *) per_cu; | |
8732 | ||
9d8780f0 | 8733 | sprintf (buf, "TU %s at offset %s", |
73be47f5 | 8734 | hex_string (sig_type->signature), |
9d8780f0 | 8735 | sect_offset_str (per_cu->sect_off)); |
73be47f5 DE |
8736 | /* There can be 100s of TUs. |
8737 | Only print them in verbose mode. */ | |
8738 | debug_print_threshold = 2; | |
f4dc4d17 | 8739 | } |
247f5c4f | 8740 | else |
73be47f5 | 8741 | { |
9d8780f0 SM |
8742 | sprintf (buf, "CU at offset %s", |
8743 | sect_offset_str (per_cu->sect_off)); | |
73be47f5 DE |
8744 | debug_print_threshold = 1; |
8745 | } | |
247f5c4f | 8746 | |
b4f54984 | 8747 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 8748 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
8749 | |
8750 | if (per_cu->is_debug_types) | |
39856def | 8751 | process_full_type_unit (per_cu, item.pretend_language); |
f4dc4d17 | 8752 | else |
39856def | 8753 | process_full_comp_unit (per_cu, item.pretend_language); |
f4dc4d17 | 8754 | |
b4f54984 | 8755 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 8756 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 8757 | } |
10b3939b | 8758 | |
39856def TT |
8759 | item.per_cu->queued = 0; |
8760 | dwarf2_per_objfile->queue.pop (); | |
10b3939b DJ |
8761 | } |
8762 | ||
b4f54984 | 8763 | if (dwarf_read_debug) |
45cfd468 DE |
8764 | { |
8765 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 8766 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 8767 | } |
10b3939b DJ |
8768 | } |
8769 | ||
10b3939b DJ |
8770 | /* Read in full symbols for PST, and anything it depends on. */ |
8771 | ||
8566b89b TT |
8772 | void |
8773 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 8774 | { |
8566b89b | 8775 | if (readin) |
95554aad TT |
8776 | return; |
8777 | ||
0494dbec | 8778 | read_dependencies (objfile); |
aaa75496 | 8779 | |
b83470bf TT |
8780 | dw2_do_instantiate_symtab (per_cu_data, false); |
8781 | gdb_assert (get_compunit_symtab () != nullptr); | |
10b3939b DJ |
8782 | } |
8783 | ||
dee91e82 DE |
8784 | /* Trivial hash function for die_info: the hash value of a DIE |
8785 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 8786 | |
dee91e82 DE |
8787 | static hashval_t |
8788 | die_hash (const void *item) | |
10b3939b | 8789 | { |
9a3c8263 | 8790 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 8791 | |
9c541725 | 8792 | return to_underlying (die->sect_off); |
dee91e82 | 8793 | } |
63d06c5c | 8794 | |
dee91e82 DE |
8795 | /* Trivial comparison function for die_info structures: two DIEs |
8796 | are equal if they have the same offset. */ | |
98bfdba5 | 8797 | |
dee91e82 DE |
8798 | static int |
8799 | die_eq (const void *item_lhs, const void *item_rhs) | |
8800 | { | |
9a3c8263 SM |
8801 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
8802 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 8803 | |
9c541725 | 8804 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 8805 | } |
c906108c | 8806 | |
c0ab21c2 | 8807 | /* Load the DIEs associated with PER_CU into memory. */ |
c906108c | 8808 | |
dee91e82 | 8809 | static void |
c0ab21c2 TT |
8810 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
8811 | bool skip_partial, | |
8812 | enum language pretend_language) | |
dee91e82 | 8813 | { |
c0ab21c2 TT |
8814 | gdb_assert (! this_cu->is_debug_types); |
8815 | ||
6751ebae | 8816 | cutu_reader reader (this_cu, NULL, 1, skip_partial); |
c0ab21c2 TT |
8817 | if (reader.dummy_p) |
8818 | return; | |
8819 | ||
8820 | struct dwarf2_cu *cu = reader.cu; | |
8821 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 8822 | |
dee91e82 DE |
8823 | gdb_assert (cu->die_hash == NULL); |
8824 | cu->die_hash = | |
8825 | htab_create_alloc_ex (cu->header.length / 12, | |
8826 | die_hash, | |
8827 | die_eq, | |
8828 | NULL, | |
8829 | &cu->comp_unit_obstack, | |
8830 | hashtab_obstack_allocate, | |
8831 | dummy_obstack_deallocate); | |
e142c38c | 8832 | |
3e225074 | 8833 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
8834 | reader.comp_unit_die->child |
8835 | = read_die_and_siblings (&reader, reader.info_ptr, | |
8836 | &info_ptr, reader.comp_unit_die); | |
8837 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 8838 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
8839 | |
8840 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 8841 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 8842 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
8843 | or we won't be able to build types correctly. |
8844 | Similarly, if we do not read the producer, we can not apply | |
8845 | producer-specific interpretation. */ | |
c0ab21c2 | 8846 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
6751ebae TT |
8847 | |
8848 | reader.keep (); | |
10b3939b DJ |
8849 | } |
8850 | ||
3da10d80 KS |
8851 | /* Add a DIE to the delayed physname list. */ |
8852 | ||
8853 | static void | |
8854 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
8855 | const char *name, struct die_info *die, | |
8856 | struct dwarf2_cu *cu) | |
8857 | { | |
8858 | struct delayed_method_info mi; | |
8859 | mi.type = type; | |
8860 | mi.fnfield_index = fnfield_index; | |
8861 | mi.index = index; | |
8862 | mi.name = name; | |
8863 | mi.die = die; | |
c89b44cd | 8864 | cu->method_list.push_back (mi); |
3da10d80 KS |
8865 | } |
8866 | ||
3693fdb3 PA |
8867 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
8868 | "const" / "volatile". If so, decrements LEN by the length of the | |
8869 | modifier and return true. Otherwise return false. */ | |
8870 | ||
8871 | template<size_t N> | |
8872 | static bool | |
8873 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
8874 | { | |
8875 | size_t mod_len = sizeof (mod) - 1; | |
8876 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
8877 | { | |
8878 | len -= mod_len; | |
8879 | return true; | |
8880 | } | |
8881 | return false; | |
8882 | } | |
8883 | ||
3da10d80 KS |
8884 | /* Compute the physnames of any methods on the CU's method list. |
8885 | ||
8886 | The computation of method physnames is delayed in order to avoid the | |
8887 | (bad) condition that one of the method's formal parameters is of an as yet | |
8888 | incomplete type. */ | |
8889 | ||
8890 | static void | |
8891 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
8892 | { | |
3693fdb3 | 8893 | /* Only C++ delays computing physnames. */ |
c89b44cd | 8894 | if (cu->method_list.empty ()) |
3693fdb3 PA |
8895 | return; |
8896 | gdb_assert (cu->language == language_cplus); | |
8897 | ||
52941706 | 8898 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 8899 | { |
1d06ead6 | 8900 | const char *physname; |
3da10d80 | 8901 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
8902 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
8903 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
8904 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 8905 | = physname ? physname : ""; |
3693fdb3 PA |
8906 | |
8907 | /* Since there's no tag to indicate whether a method is a | |
8908 | const/volatile overload, extract that information out of the | |
8909 | demangled name. */ | |
8910 | if (physname != NULL) | |
8911 | { | |
8912 | size_t len = strlen (physname); | |
8913 | ||
8914 | while (1) | |
8915 | { | |
8916 | if (physname[len] == ')') /* shortcut */ | |
8917 | break; | |
8918 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 8919 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 8920 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 8921 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
8922 | else |
8923 | break; | |
8924 | } | |
8925 | } | |
3da10d80 | 8926 | } |
c89b44cd TT |
8927 | |
8928 | /* The list is no longer needed. */ | |
8929 | cu->method_list.clear (); | |
3da10d80 KS |
8930 | } |
8931 | ||
a766d390 DE |
8932 | /* Go objects should be embedded in a DW_TAG_module DIE, |
8933 | and it's not clear if/how imported objects will appear. | |
8934 | To keep Go support simple until that's worked out, | |
8935 | go back through what we've read and create something usable. | |
8936 | We could do this while processing each DIE, and feels kinda cleaner, | |
8937 | but that way is more invasive. | |
8938 | This is to, for example, allow the user to type "p var" or "b main" | |
8939 | without having to specify the package name, and allow lookups | |
8940 | of module.object to work in contexts that use the expression | |
8941 | parser. */ | |
8942 | ||
8943 | static void | |
8944 | fixup_go_packaging (struct dwarf2_cu *cu) | |
8945 | { | |
421d1616 | 8946 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
8947 | struct pending *list; |
8948 | int i; | |
8949 | ||
c24bdb02 | 8950 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
8951 | list != NULL; |
8952 | list = list->next) | |
a766d390 DE |
8953 | { |
8954 | for (i = 0; i < list->nsyms; ++i) | |
8955 | { | |
8956 | struct symbol *sym = list->symbol[i]; | |
8957 | ||
c1b5c1eb | 8958 | if (sym->language () == language_go |
a766d390 DE |
8959 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
8960 | { | |
421d1616 TT |
8961 | gdb::unique_xmalloc_ptr<char> this_package_name |
8962 | (go_symbol_package_name (sym)); | |
a766d390 DE |
8963 | |
8964 | if (this_package_name == NULL) | |
8965 | continue; | |
8966 | if (package_name == NULL) | |
421d1616 | 8967 | package_name = std::move (this_package_name); |
a766d390 DE |
8968 | else |
8969 | { | |
518817b3 SM |
8970 | struct objfile *objfile |
8971 | = cu->per_cu->dwarf2_per_objfile->objfile; | |
421d1616 | 8972 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 8973 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
8974 | (symbol_symtab (sym) != NULL |
8975 | ? symtab_to_filename_for_display | |
8976 | (symbol_symtab (sym)) | |
e3b94546 | 8977 | : objfile_name (objfile)), |
421d1616 | 8978 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
8979 | } |
8980 | } | |
8981 | } | |
8982 | } | |
8983 | ||
8984 | if (package_name != NULL) | |
8985 | { | |
518817b3 | 8986 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
be1e3d3e | 8987 | const char *saved_package_name = objfile->intern (package_name.get ()); |
19f392bc UW |
8988 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
8989 | saved_package_name); | |
a766d390 DE |
8990 | struct symbol *sym; |
8991 | ||
e623cf5d | 8992 | sym = allocate_symbol (objfile); |
d3ecddab | 8993 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 8994 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
8995 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
8996 | e.g., "main" finds the "main" module and not C's main(). */ | |
8997 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 8998 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
8999 | SYMBOL_TYPE (sym) = type; |
9000 | ||
c24bdb02 | 9001 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9002 | } |
9003 | } | |
9004 | ||
c9317f21 TT |
9005 | /* Allocate a fully-qualified name consisting of the two parts on the |
9006 | obstack. */ | |
9007 | ||
9008 | static const char * | |
9009 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9010 | { | |
9011 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9012 | } | |
9013 | ||
9014 | /* A helper that allocates a struct discriminant_info to attach to a | |
9015 | union type. */ | |
9016 | ||
9017 | static struct discriminant_info * | |
9018 | alloc_discriminant_info (struct type *type, int discriminant_index, | |
9019 | int default_index) | |
9020 | { | |
9021 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
c7b15a66 TT |
9022 | gdb_assert (discriminant_index == -1 |
9023 | || (discriminant_index >= 0 | |
9024 | && discriminant_index < TYPE_NFIELDS (type))); | |
c9317f21 | 9025 | gdb_assert (default_index == -1 |
c7b15a66 | 9026 | || (default_index >= 0 && default_index < TYPE_NFIELDS (type))); |
c9317f21 TT |
9027 | |
9028 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
9029 | ||
9030 | struct discriminant_info *disc | |
9031 | = ((struct discriminant_info *) | |
9032 | TYPE_ZALLOC (type, | |
9033 | offsetof (struct discriminant_info, discriminants) | |
9034 | + TYPE_NFIELDS (type) * sizeof (disc->discriminants[0]))); | |
9035 | disc->default_index = default_index; | |
9036 | disc->discriminant_index = discriminant_index; | |
9037 | ||
9038 | struct dynamic_prop prop; | |
9039 | prop.kind = PROP_UNDEFINED; | |
9040 | prop.data.baton = disc; | |
9041 | ||
9042 | add_dyn_prop (DYN_PROP_DISCRIMINATED, prop, type); | |
9043 | ||
9044 | return disc; | |
9045 | } | |
9046 | ||
9047 | /* Some versions of rustc emitted enums in an unusual way. | |
9048 | ||
9049 | Ordinary enums were emitted as unions. The first element of each | |
9050 | structure in the union was named "RUST$ENUM$DISR". This element | |
9051 | held the discriminant. | |
9052 | ||
9053 | These versions of Rust also implemented the "non-zero" | |
9054 | optimization. When the enum had two values, and one is empty and | |
9055 | the other holds a pointer that cannot be zero, the pointer is used | |
9056 | as the discriminant, with a zero value meaning the empty variant. | |
9057 | Here, the union's first member is of the form | |
9058 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9059 | where the fieldnos are the indices of the fields that should be | |
9060 | traversed in order to find the field (which may be several fields deep) | |
9061 | and the variantname is the name of the variant of the case when the | |
9062 | field is zero. | |
9063 | ||
9064 | This function recognizes whether TYPE is of one of these forms, | |
9065 | and, if so, smashes it to be a variant type. */ | |
9066 | ||
9067 | static void | |
9068 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9069 | { | |
9070 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
9071 | ||
9072 | /* We don't need to deal with empty enums. */ | |
9073 | if (TYPE_NFIELDS (type) == 0) | |
9074 | return; | |
9075 | ||
9076 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
9077 | if (TYPE_NFIELDS (type) == 1 | |
9078 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) | |
9079 | { | |
9080 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9081 | ||
9082 | /* Decode the field name to find the offset of the | |
9083 | discriminant. */ | |
9084 | ULONGEST bit_offset = 0; | |
9085 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); | |
9086 | while (name[0] >= '0' && name[0] <= '9') | |
9087 | { | |
9088 | char *tail; | |
9089 | unsigned long index = strtoul (name, &tail, 10); | |
9090 | name = tail; | |
9091 | if (*name != '$' | |
9092 | || index >= TYPE_NFIELDS (field_type) | |
9093 | || (TYPE_FIELD_LOC_KIND (field_type, index) | |
9094 | != FIELD_LOC_KIND_BITPOS)) | |
9095 | { | |
b98664d3 | 9096 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9097 | "[in module %s]"), |
9098 | TYPE_FIELD_NAME (type, 0), | |
9099 | objfile_name (objfile)); | |
9100 | return; | |
9101 | } | |
9102 | ++name; | |
9103 | ||
9104 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
9105 | field_type = TYPE_FIELD_TYPE (field_type, index); | |
9106 | } | |
9107 | ||
9108 | /* Make a union to hold the variants. */ | |
9109 | struct type *union_type = alloc_type (objfile); | |
9110 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9111 | TYPE_NFIELDS (union_type) = 3; | |
9112 | TYPE_FIELDS (union_type) | |
9113 | = (struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field)); | |
9114 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9115 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9116 | |
9117 | /* Put the discriminant must at index 0. */ | |
9118 | TYPE_FIELD_TYPE (union_type, 0) = field_type; | |
9119 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
9120 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
9121 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 0), bit_offset); | |
9122 | ||
9123 | /* The order of fields doesn't really matter, so put the real | |
9124 | field at index 1 and the data-less field at index 2. */ | |
9125 | struct discriminant_info *disc | |
9126 | = alloc_discriminant_info (union_type, 0, 1); | |
9127 | TYPE_FIELD (union_type, 1) = TYPE_FIELD (type, 0); | |
9128 | TYPE_FIELD_NAME (union_type, 1) | |
9129 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1))); | |
9130 | TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1)) | |
9131 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
9132 | TYPE_FIELD_NAME (union_type, 1)); | |
9133 | ||
9134 | const char *dataless_name | |
9135 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
9136 | name); | |
9137 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9138 | dataless_name); | |
9139 | TYPE_FIELD_TYPE (union_type, 2) = dataless_type; | |
9140 | /* NAME points into the original discriminant name, which | |
9141 | already has the correct lifetime. */ | |
9142 | TYPE_FIELD_NAME (union_type, 2) = name; | |
9143 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 2), 0); | |
9144 | disc->discriminants[2] = 0; | |
9145 | ||
9146 | /* Smash this type to be a structure type. We have to do this | |
9147 | because the type has already been recorded. */ | |
9148 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9149 | TYPE_NFIELDS (type) = 1; | |
9150 | TYPE_FIELDS (type) | |
9151 | = (struct field *) TYPE_ZALLOC (type, sizeof (struct field)); | |
9152 | ||
9153 | /* Install the variant part. */ | |
9154 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
9155 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
9156 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
9157 | } | |
77c2dba3 TT |
9158 | /* A union with a single anonymous field is probably an old-style |
9159 | univariant enum. */ | |
9160 | else if (TYPE_NFIELDS (type) == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) | |
c9317f21 | 9161 | { |
c9317f21 TT |
9162 | /* Smash this type to be a structure type. We have to do this |
9163 | because the type has already been recorded. */ | |
9164 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9165 | ||
9166 | /* Make a union to hold the variants. */ | |
9167 | struct type *union_type = alloc_type (objfile); | |
9168 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9169 | TYPE_NFIELDS (union_type) = TYPE_NFIELDS (type); | |
9170 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9171 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9172 | TYPE_FIELDS (union_type) = TYPE_FIELDS (type); |
9173 | ||
9174 | struct type *field_type = TYPE_FIELD_TYPE (union_type, 0); | |
9175 | const char *variant_name | |
9176 | = rust_last_path_segment (TYPE_NAME (field_type)); | |
9177 | TYPE_FIELD_NAME (union_type, 0) = variant_name; | |
9178 | TYPE_NAME (field_type) | |
9179 | = rust_fully_qualify (&objfile->objfile_obstack, | |
c7b15a66 | 9180 | TYPE_NAME (type), variant_name); |
c9317f21 TT |
9181 | |
9182 | /* Install the union in the outer struct type. */ | |
9183 | TYPE_NFIELDS (type) = 1; | |
9184 | TYPE_FIELDS (type) | |
9185 | = (struct field *) TYPE_ZALLOC (union_type, sizeof (struct field)); | |
9186 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
9187 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
9188 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
9189 | ||
9190 | alloc_discriminant_info (union_type, -1, 0); | |
9191 | } | |
9192 | else | |
9193 | { | |
9194 | struct type *disr_type = nullptr; | |
9195 | for (int i = 0; i < TYPE_NFIELDS (type); ++i) | |
9196 | { | |
9197 | disr_type = TYPE_FIELD_TYPE (type, i); | |
9198 | ||
a037790e TT |
9199 | if (TYPE_CODE (disr_type) != TYPE_CODE_STRUCT) |
9200 | { | |
9201 | /* All fields of a true enum will be structs. */ | |
9202 | return; | |
9203 | } | |
9204 | else if (TYPE_NFIELDS (disr_type) == 0) | |
c9317f21 TT |
9205 | { |
9206 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9207 | disr_type = nullptr; |
c9317f21 TT |
9208 | } |
9209 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9210 | "RUST$ENUM$DISR") != 0) | |
9211 | { | |
9212 | /* Not a Rust enum. */ | |
9213 | return; | |
9214 | } | |
9215 | else | |
9216 | { | |
9217 | /* Found one. */ | |
9218 | break; | |
9219 | } | |
9220 | } | |
9221 | ||
9222 | /* If we got here without a discriminant, then it's probably | |
9223 | just a union. */ | |
9224 | if (disr_type == nullptr) | |
9225 | return; | |
9226 | ||
9227 | /* Smash this type to be a structure type. We have to do this | |
9228 | because the type has already been recorded. */ | |
9229 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9230 | ||
9231 | /* Make a union to hold the variants. */ | |
9232 | struct field *disr_field = &TYPE_FIELD (disr_type, 0); | |
9233 | struct type *union_type = alloc_type (objfile); | |
9234 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9235 | TYPE_NFIELDS (union_type) = 1 + TYPE_NFIELDS (type); | |
9236 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9237 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9238 | TYPE_FIELDS (union_type) |
9239 | = (struct field *) TYPE_ZALLOC (union_type, | |
9240 | (TYPE_NFIELDS (union_type) | |
9241 | * sizeof (struct field))); | |
9242 | ||
9243 | memcpy (TYPE_FIELDS (union_type) + 1, TYPE_FIELDS (type), | |
9244 | TYPE_NFIELDS (type) * sizeof (struct field)); | |
9245 | ||
9246 | /* Install the discriminant at index 0 in the union. */ | |
9247 | TYPE_FIELD (union_type, 0) = *disr_field; | |
9248 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
9249 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
9250 | ||
9251 | /* Install the union in the outer struct type. */ | |
9252 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
9253 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
9254 | TYPE_NFIELDS (type) = 1; | |
9255 | ||
9256 | /* Set the size and offset of the union type. */ | |
9257 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
9258 | ||
9259 | /* We need a way to find the correct discriminant given a | |
9260 | variant name. For convenience we build a map here. */ | |
9261 | struct type *enum_type = FIELD_TYPE (*disr_field); | |
9262 | std::unordered_map<std::string, ULONGEST> discriminant_map; | |
9263 | for (int i = 0; i < TYPE_NFIELDS (enum_type); ++i) | |
9264 | { | |
9265 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9266 | { | |
9267 | const char *name | |
9268 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9269 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9270 | } | |
9271 | } | |
9272 | ||
9273 | int n_fields = TYPE_NFIELDS (union_type); | |
9274 | struct discriminant_info *disc | |
9275 | = alloc_discriminant_info (union_type, 0, -1); | |
9276 | /* Skip the discriminant here. */ | |
9277 | for (int i = 1; i < n_fields; ++i) | |
9278 | { | |
9279 | /* Find the final word in the name of this variant's type. | |
9280 | That name can be used to look up the correct | |
9281 | discriminant. */ | |
9282 | const char *variant_name | |
9283 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, | |
9284 | i))); | |
9285 | ||
9286 | auto iter = discriminant_map.find (variant_name); | |
9287 | if (iter != discriminant_map.end ()) | |
9288 | disc->discriminants[i] = iter->second; | |
9289 | ||
bedda9ac | 9290 | /* Remove the discriminant field, if it exists. */ |
c9317f21 | 9291 | struct type *sub_type = TYPE_FIELD_TYPE (union_type, i); |
bedda9ac TT |
9292 | if (TYPE_NFIELDS (sub_type) > 0) |
9293 | { | |
9294 | --TYPE_NFIELDS (sub_type); | |
9295 | ++TYPE_FIELDS (sub_type); | |
9296 | } | |
c9317f21 TT |
9297 | TYPE_FIELD_NAME (union_type, i) = variant_name; |
9298 | TYPE_NAME (sub_type) | |
9299 | = rust_fully_qualify (&objfile->objfile_obstack, | |
9300 | TYPE_NAME (type), variant_name); | |
9301 | } | |
9302 | } | |
9303 | } | |
9304 | ||
9305 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9306 | ||
9307 | static void | |
9308 | rust_union_quirks (struct dwarf2_cu *cu) | |
9309 | { | |
9310 | gdb_assert (cu->language == language_rust); | |
52941706 SM |
9311 | for (type *type_ : cu->rust_unions) |
9312 | quirk_rust_enum (type_, cu->per_cu->dwarf2_per_objfile->objfile); | |
2d79090e TT |
9313 | /* We don't need this any more. */ |
9314 | cu->rust_unions.clear (); | |
c9317f21 TT |
9315 | } |
9316 | ||
95554aad TT |
9317 | /* Return the symtab for PER_CU. This works properly regardless of |
9318 | whether we're using the index or psymtabs. */ | |
9319 | ||
43f3e411 DE |
9320 | static struct compunit_symtab * |
9321 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad | 9322 | { |
ed2dc618 | 9323 | return (per_cu->dwarf2_per_objfile->using_index |
43f3e411 DE |
9324 | ? per_cu->v.quick->compunit_symtab |
9325 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
9326 | } |
9327 | ||
9328 | /* A helper function for computing the list of all symbol tables | |
9329 | included by PER_CU. */ | |
9330 | ||
9331 | static void | |
4c39bc03 | 9332 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9333 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 9334 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 9335 | struct compunit_symtab *immediate_parent) |
95554aad TT |
9336 | { |
9337 | void **slot; | |
43f3e411 | 9338 | struct compunit_symtab *cust; |
95554aad TT |
9339 | |
9340 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
9341 | if (*slot != NULL) | |
9342 | { | |
9343 | /* This inclusion and its children have been processed. */ | |
9344 | return; | |
9345 | } | |
9346 | ||
9347 | *slot = per_cu; | |
9348 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
9349 | cust = get_compunit_symtab (per_cu); |
9350 | if (cust != NULL) | |
ec94af83 DE |
9351 | { |
9352 | /* If this is a type unit only add its symbol table if we haven't | |
9353 | seen it yet (type unit per_cu's can share symtabs). */ | |
9354 | if (per_cu->is_debug_types) | |
9355 | { | |
43f3e411 | 9356 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9357 | if (*slot == NULL) |
9358 | { | |
43f3e411 | 9359 | *slot = cust; |
4c39bc03 | 9360 | result->push_back (cust); |
43f3e411 DE |
9361 | if (cust->user == NULL) |
9362 | cust->user = immediate_parent; | |
ec94af83 DE |
9363 | } |
9364 | } | |
9365 | else | |
f9125b6c | 9366 | { |
4c39bc03 | 9367 | result->push_back (cust); |
43f3e411 DE |
9368 | if (cust->user == NULL) |
9369 | cust->user = immediate_parent; | |
f9125b6c | 9370 | } |
ec94af83 | 9371 | } |
95554aad | 9372 | |
ae640021 AB |
9373 | if (!per_cu->imported_symtabs_empty ()) |
9374 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
9375 | { | |
9376 | recursively_compute_inclusions (result, all_children, | |
9377 | all_type_symtabs, ptr, cust); | |
9378 | } | |
95554aad TT |
9379 | } |
9380 | ||
43f3e411 | 9381 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
9382 | PER_CU. */ |
9383 | ||
9384 | static void | |
43f3e411 | 9385 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 9386 | { |
f4dc4d17 DE |
9387 | gdb_assert (! per_cu->is_debug_types); |
9388 | ||
ae640021 | 9389 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 9390 | { |
ae640021 | 9391 | int len; |
4c39bc03 | 9392 | std::vector<compunit_symtab *> result_symtabs; |
ec94af83 | 9393 | htab_t all_children, all_type_symtabs; |
43f3e411 | 9394 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
9395 | |
9396 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 9397 | if (cust == NULL) |
95554aad TT |
9398 | return; |
9399 | ||
9400 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
9401 | NULL, xcalloc, xfree); | |
ec94af83 DE |
9402 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
9403 | NULL, xcalloc, xfree); | |
95554aad | 9404 | |
ae640021 | 9405 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 DE |
9406 | { |
9407 | recursively_compute_inclusions (&result_symtabs, all_children, | |
ae640021 | 9408 | all_type_symtabs, ptr, cust); |
ec94af83 | 9409 | } |
95554aad | 9410 | |
ec94af83 | 9411 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 9412 | len = result_symtabs.size (); |
43f3e411 | 9413 | cust->includes |
ed2dc618 | 9414 | = XOBNEWVEC (&per_cu->dwarf2_per_objfile->objfile->objfile_obstack, |
8d749320 | 9415 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
9416 | memcpy (cust->includes, result_symtabs.data (), |
9417 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 9418 | cust->includes[len] = NULL; |
95554aad | 9419 | |
95554aad | 9420 | htab_delete (all_children); |
ec94af83 | 9421 | htab_delete (all_type_symtabs); |
95554aad TT |
9422 | } |
9423 | } | |
9424 | ||
9425 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
9426 | read. */ | |
9427 | ||
9428 | static void | |
ed2dc618 | 9429 | process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 9430 | { |
71b73764 | 9431 | for (dwarf2_per_cu_data *iter : dwarf2_per_objfile->just_read_cus) |
f4dc4d17 DE |
9432 | { |
9433 | if (! iter->is_debug_types) | |
43f3e411 | 9434 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 9435 | } |
95554aad | 9436 | |
c5d0225d | 9437 | dwarf2_per_objfile->just_read_cus.clear (); |
95554aad TT |
9438 | } |
9439 | ||
9cdd5dbd | 9440 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
9441 | already been loaded into memory. */ |
9442 | ||
9443 | static void | |
95554aad TT |
9444 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
9445 | enum language pretend_language) | |
10b3939b | 9446 | { |
10b3939b | 9447 | struct dwarf2_cu *cu = per_cu->cu; |
ed2dc618 SM |
9448 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9449 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3e29f34a | 9450 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 9451 | CORE_ADDR lowpc, highpc; |
43f3e411 | 9452 | struct compunit_symtab *cust; |
10b3939b | 9453 | CORE_ADDR baseaddr; |
4359dff1 | 9454 | struct block *static_block; |
3e29f34a | 9455 | CORE_ADDR addr; |
10b3939b | 9456 | |
b3b3bada | 9457 | baseaddr = objfile->text_section_offset (); |
10b3939b | 9458 | |
c89b44cd TT |
9459 | /* Clear the list here in case something was left over. */ |
9460 | cu->method_list.clear (); | |
10b3939b | 9461 | |
95554aad TT |
9462 | cu->language = pretend_language; |
9463 | cu->language_defn = language_def (cu->language); | |
9464 | ||
c906108c | 9465 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 9466 | process_die (cu->dies, cu); |
c906108c | 9467 | |
a766d390 DE |
9468 | /* For now fudge the Go package. */ |
9469 | if (cu->language == language_go) | |
9470 | fixup_go_packaging (cu); | |
9471 | ||
5f48f8f3 | 9472 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
9473 | should be complete, and it should now be safe to compute all of the |
9474 | physnames. */ | |
9475 | compute_delayed_physnames (cu); | |
3da10d80 | 9476 | |
c9317f21 TT |
9477 | if (cu->language == language_rust) |
9478 | rust_union_quirks (cu); | |
9479 | ||
fae299cd DC |
9480 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
9481 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
9482 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 9483 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 9484 | |
3e29f34a | 9485 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 9486 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
9487 | |
9488 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
9489 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
9490 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
9491 | addrmap to help ensure it has an accurate map of pc values belonging to | |
9492 | this comp unit. */ | |
9493 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
9494 | ||
c24bdb02 | 9495 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
9496 | SECT_OFF_TEXT (objfile), |
9497 | 0); | |
c906108c | 9498 | |
43f3e411 | 9499 | if (cust != NULL) |
c906108c | 9500 | { |
df15bd07 | 9501 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 9502 | |
8be455d7 JK |
9503 | /* Set symtab language to language from DW_AT_language. If the |
9504 | compilation is from a C file generated by language preprocessors, do | |
9505 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 9506 | if (!(cu->language == language_c |
40e3ad0e | 9507 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 9508 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
9509 | |
9510 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
9511 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
9512 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
9513 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
9514 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
9515 | |
9516 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
9517 | needed, it would be wrong due to missing DW_AT_producer there. | |
9518 | ||
9519 | Still one can confuse GDB by using non-standard GCC compilation | |
9520 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 9521 | */ |
ab260dad | 9522 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 9523 | cust->locations_valid = 1; |
e0d00bc7 JK |
9524 | |
9525 | if (gcc_4_minor >= 5) | |
43f3e411 | 9526 | cust->epilogue_unwind_valid = 1; |
96408a79 | 9527 | |
43f3e411 | 9528 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 9529 | } |
9291a0cd TT |
9530 | |
9531 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 9532 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
9533 | else |
9534 | { | |
891813be | 9535 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
43f3e411 | 9536 | pst->compunit_symtab = cust; |
6d94535f | 9537 | pst->readin = true; |
9291a0cd | 9538 | } |
c906108c | 9539 | |
95554aad | 9540 | /* Push it for inclusion processing later. */ |
c5d0225d | 9541 | dwarf2_per_objfile->just_read_cus.push_back (per_cu); |
804d2729 TT |
9542 | |
9543 | /* Not needed any more. */ | |
c24bdb02 | 9544 | cu->reset_builder (); |
f4dc4d17 | 9545 | } |
45cfd468 | 9546 | |
f4dc4d17 DE |
9547 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
9548 | already been loaded into memory. */ | |
9549 | ||
9550 | static void | |
9551 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
9552 | enum language pretend_language) | |
9553 | { | |
9554 | struct dwarf2_cu *cu = per_cu->cu; | |
ed2dc618 SM |
9555 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9556 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
43f3e411 | 9557 | struct compunit_symtab *cust; |
0186c6a7 DE |
9558 | struct signatured_type *sig_type; |
9559 | ||
9560 | gdb_assert (per_cu->is_debug_types); | |
9561 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 9562 | |
c89b44cd TT |
9563 | /* Clear the list here in case something was left over. */ |
9564 | cu->method_list.clear (); | |
f4dc4d17 | 9565 | |
f4dc4d17 DE |
9566 | cu->language = pretend_language; |
9567 | cu->language_defn = language_def (cu->language); | |
9568 | ||
9569 | /* The symbol tables are set up in read_type_unit_scope. */ | |
9570 | process_die (cu->dies, cu); | |
9571 | ||
9572 | /* For now fudge the Go package. */ | |
9573 | if (cu->language == language_go) | |
9574 | fixup_go_packaging (cu); | |
9575 | ||
5f48f8f3 | 9576 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
9577 | should be complete, and it should now be safe to compute all of the |
9578 | physnames. */ | |
9579 | compute_delayed_physnames (cu); | |
f4dc4d17 | 9580 | |
c9317f21 TT |
9581 | if (cu->language == language_rust) |
9582 | rust_union_quirks (cu); | |
9583 | ||
f4dc4d17 DE |
9584 | /* TUs share symbol tables. |
9585 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
9586 | of it with end_expandable_symtab. Otherwise, complete the addition of |
9587 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 9588 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 9589 | { |
c24bdb02 KS |
9590 | buildsym_compunit *builder = cu->get_builder (); |
9591 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
43f3e411 | 9592 | sig_type->type_unit_group->compunit_symtab = cust; |
f4dc4d17 | 9593 | |
43f3e411 | 9594 | if (cust != NULL) |
f4dc4d17 DE |
9595 | { |
9596 | /* Set symtab language to language from DW_AT_language. If the | |
9597 | compilation is from a C file generated by language preprocessors, | |
9598 | do not set the language if it was already deduced by | |
9599 | start_subfile. */ | |
43f3e411 DE |
9600 | if (!(cu->language == language_c |
9601 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
9602 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
9603 | } |
9604 | } | |
9605 | else | |
9606 | { | |
c24bdb02 | 9607 | cu->get_builder ()->augment_type_symtab (); |
43f3e411 | 9608 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
9609 | } |
9610 | ||
9611 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 9612 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
9613 | else |
9614 | { | |
891813be | 9615 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
43f3e411 | 9616 | pst->compunit_symtab = cust; |
6d94535f | 9617 | pst->readin = true; |
45cfd468 | 9618 | } |
804d2729 TT |
9619 | |
9620 | /* Not needed any more. */ | |
c24bdb02 | 9621 | cu->reset_builder (); |
c906108c SS |
9622 | } |
9623 | ||
95554aad TT |
9624 | /* Process an imported unit DIE. */ |
9625 | ||
9626 | static void | |
9627 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
9628 | { | |
9629 | struct attribute *attr; | |
9630 | ||
f4dc4d17 DE |
9631 | /* For now we don't handle imported units in type units. */ |
9632 | if (cu->per_cu->is_debug_types) | |
9633 | { | |
9634 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
9635 | " supported in type units [in module %s]"), | |
518817b3 | 9636 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
9637 | } |
9638 | ||
95554aad TT |
9639 | attr = dwarf2_attr (die, DW_AT_import, cu); |
9640 | if (attr != NULL) | |
9641 | { | |
0826b30a | 9642 | sect_offset sect_off = attr->get_ref_die_offset (); |
9c541725 PA |
9643 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
9644 | dwarf2_per_cu_data *per_cu | |
e3b94546 | 9645 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, |
518817b3 | 9646 | cu->per_cu->dwarf2_per_objfile); |
95554aad | 9647 | |
58990295 TV |
9648 | /* We're importing a C++ compilation unit with tag DW_TAG_compile_unit |
9649 | into another compilation unit, at root level. Regard this as a hint, | |
9650 | and ignore it. */ | |
9651 | if (die->parent && die->parent->parent == NULL | |
9652 | && per_cu->unit_type == DW_UT_compile | |
9653 | && per_cu->lang == language_cplus) | |
9654 | return; | |
9655 | ||
69d751e3 | 9656 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad | 9657 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 9658 | load_full_comp_unit (per_cu, false, cu->language); |
95554aad | 9659 | |
ae640021 | 9660 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
9661 | } |
9662 | } | |
9663 | ||
4c8aa72d PA |
9664 | /* RAII object that represents a process_die scope: i.e., |
9665 | starts/finishes processing a DIE. */ | |
9666 | class process_die_scope | |
adde2bff | 9667 | { |
4c8aa72d PA |
9668 | public: |
9669 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
9670 | : m_die (die), m_cu (cu) | |
9671 | { | |
9672 | /* We should only be processing DIEs not already in process. */ | |
9673 | gdb_assert (!m_die->in_process); | |
9674 | m_die->in_process = true; | |
9675 | } | |
8c3cb9fa | 9676 | |
4c8aa72d PA |
9677 | ~process_die_scope () |
9678 | { | |
9679 | m_die->in_process = false; | |
9680 | ||
9681 | /* If we're done processing the DIE for the CU that owns the line | |
9682 | header, we don't need the line header anymore. */ | |
9683 | if (m_cu->line_header_die_owner == m_die) | |
9684 | { | |
9685 | delete m_cu->line_header; | |
9686 | m_cu->line_header = NULL; | |
9687 | m_cu->line_header_die_owner = NULL; | |
9688 | } | |
9689 | } | |
9690 | ||
9691 | private: | |
9692 | die_info *m_die; | |
9693 | dwarf2_cu *m_cu; | |
9694 | }; | |
adde2bff | 9695 | |
c906108c SS |
9696 | /* Process a die and its children. */ |
9697 | ||
9698 | static void | |
e7c27a73 | 9699 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9700 | { |
4c8aa72d | 9701 | process_die_scope scope (die, cu); |
adde2bff | 9702 | |
c906108c SS |
9703 | switch (die->tag) |
9704 | { | |
9705 | case DW_TAG_padding: | |
9706 | break; | |
9707 | case DW_TAG_compile_unit: | |
95554aad | 9708 | case DW_TAG_partial_unit: |
e7c27a73 | 9709 | read_file_scope (die, cu); |
c906108c | 9710 | break; |
348e048f DE |
9711 | case DW_TAG_type_unit: |
9712 | read_type_unit_scope (die, cu); | |
9713 | break; | |
c906108c | 9714 | case DW_TAG_subprogram: |
0a4b0913 AB |
9715 | /* Nested subprograms in Fortran get a prefix. */ |
9716 | if (cu->language == language_fortran | |
9717 | && die->parent != NULL | |
9718 | && die->parent->tag == DW_TAG_subprogram) | |
9719 | cu->processing_has_namespace_info = true; | |
9720 | /* Fall through. */ | |
c906108c | 9721 | case DW_TAG_inlined_subroutine: |
edb3359d | 9722 | read_func_scope (die, cu); |
c906108c SS |
9723 | break; |
9724 | case DW_TAG_lexical_block: | |
14898363 L |
9725 | case DW_TAG_try_block: |
9726 | case DW_TAG_catch_block: | |
e7c27a73 | 9727 | read_lexical_block_scope (die, cu); |
c906108c | 9728 | break; |
216f72a1 | 9729 | case DW_TAG_call_site: |
96408a79 SA |
9730 | case DW_TAG_GNU_call_site: |
9731 | read_call_site_scope (die, cu); | |
9732 | break; | |
c906108c | 9733 | case DW_TAG_class_type: |
680b30c7 | 9734 | case DW_TAG_interface_type: |
c906108c SS |
9735 | case DW_TAG_structure_type: |
9736 | case DW_TAG_union_type: | |
134d01f1 | 9737 | process_structure_scope (die, cu); |
c906108c SS |
9738 | break; |
9739 | case DW_TAG_enumeration_type: | |
134d01f1 | 9740 | process_enumeration_scope (die, cu); |
c906108c | 9741 | break; |
134d01f1 | 9742 | |
f792889a DJ |
9743 | /* These dies have a type, but processing them does not create |
9744 | a symbol or recurse to process the children. Therefore we can | |
9745 | read them on-demand through read_type_die. */ | |
c906108c | 9746 | case DW_TAG_subroutine_type: |
72019c9c | 9747 | case DW_TAG_set_type: |
c906108c | 9748 | case DW_TAG_array_type: |
c906108c | 9749 | case DW_TAG_pointer_type: |
c906108c | 9750 | case DW_TAG_ptr_to_member_type: |
c906108c | 9751 | case DW_TAG_reference_type: |
4297a3f0 | 9752 | case DW_TAG_rvalue_reference_type: |
c906108c | 9753 | case DW_TAG_string_type: |
c906108c | 9754 | break; |
134d01f1 | 9755 | |
c906108c | 9756 | case DW_TAG_base_type: |
a02abb62 | 9757 | case DW_TAG_subrange_type: |
cb249c71 | 9758 | case DW_TAG_typedef: |
134d01f1 DJ |
9759 | /* Add a typedef symbol for the type definition, if it has a |
9760 | DW_AT_name. */ | |
f792889a | 9761 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 9762 | break; |
c906108c | 9763 | case DW_TAG_common_block: |
e7c27a73 | 9764 | read_common_block (die, cu); |
c906108c SS |
9765 | break; |
9766 | case DW_TAG_common_inclusion: | |
9767 | break; | |
d9fa45fe | 9768 | case DW_TAG_namespace: |
9068261f | 9769 | cu->processing_has_namespace_info = true; |
e7c27a73 | 9770 | read_namespace (die, cu); |
d9fa45fe | 9771 | break; |
5d7cb8df | 9772 | case DW_TAG_module: |
9068261f | 9773 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
9774 | read_module (die, cu); |
9775 | break; | |
d9fa45fe | 9776 | case DW_TAG_imported_declaration: |
9068261f | 9777 | cu->processing_has_namespace_info = true; |
74921315 KS |
9778 | if (read_namespace_alias (die, cu)) |
9779 | break; | |
86a73007 TT |
9780 | /* The declaration is not a global namespace alias. */ |
9781 | /* Fall through. */ | |
d9fa45fe | 9782 | case DW_TAG_imported_module: |
9068261f | 9783 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
9784 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
9785 | || cu->language != language_fortran)) | |
b98664d3 | 9786 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
9787 | dwarf_tag_name (die->tag)); |
9788 | read_import_statement (die, cu); | |
d9fa45fe | 9789 | break; |
95554aad TT |
9790 | |
9791 | case DW_TAG_imported_unit: | |
9792 | process_imported_unit_die (die, cu); | |
9793 | break; | |
9794 | ||
71a3c369 TT |
9795 | case DW_TAG_variable: |
9796 | read_variable (die, cu); | |
9797 | break; | |
9798 | ||
c906108c | 9799 | default: |
e7c27a73 | 9800 | new_symbol (die, NULL, cu); |
c906108c SS |
9801 | break; |
9802 | } | |
9803 | } | |
ca69b9e6 DE |
9804 | \f |
9805 | /* DWARF name computation. */ | |
c906108c | 9806 | |
94af9270 KS |
9807 | /* A helper function for dwarf2_compute_name which determines whether DIE |
9808 | needs to have the name of the scope prepended to the name listed in the | |
9809 | die. */ | |
9810 | ||
9811 | static int | |
9812 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
9813 | { | |
1c809c68 TT |
9814 | struct attribute *attr; |
9815 | ||
94af9270 KS |
9816 | switch (die->tag) |
9817 | { | |
9818 | case DW_TAG_namespace: | |
9819 | case DW_TAG_typedef: | |
9820 | case DW_TAG_class_type: | |
9821 | case DW_TAG_interface_type: | |
9822 | case DW_TAG_structure_type: | |
9823 | case DW_TAG_union_type: | |
9824 | case DW_TAG_enumeration_type: | |
9825 | case DW_TAG_enumerator: | |
9826 | case DW_TAG_subprogram: | |
08a76f8a | 9827 | case DW_TAG_inlined_subroutine: |
94af9270 | 9828 | case DW_TAG_member: |
74921315 | 9829 | case DW_TAG_imported_declaration: |
94af9270 KS |
9830 | return 1; |
9831 | ||
9832 | case DW_TAG_variable: | |
c2b0a229 | 9833 | case DW_TAG_constant: |
94af9270 KS |
9834 | /* We only need to prefix "globally" visible variables. These include |
9835 | any variable marked with DW_AT_external or any variable that | |
9836 | lives in a namespace. [Variables in anonymous namespaces | |
9837 | require prefixing, but they are not DW_AT_external.] */ | |
9838 | ||
9839 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
9840 | { | |
9841 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 9842 | |
94af9270 KS |
9843 | return die_needs_namespace (die_specification (die, &spec_cu), |
9844 | spec_cu); | |
9845 | } | |
9846 | ||
1c809c68 | 9847 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
9848 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
9849 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
9850 | return 0; |
9851 | /* A variable in a lexical block of some kind does not need a | |
9852 | namespace, even though in C++ such variables may be external | |
9853 | and have a mangled name. */ | |
9854 | if (die->parent->tag == DW_TAG_lexical_block | |
9855 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
9856 | || die->parent->tag == DW_TAG_catch_block |
9857 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
9858 | return 0; |
9859 | return 1; | |
94af9270 KS |
9860 | |
9861 | default: | |
9862 | return 0; | |
9863 | } | |
9864 | } | |
9865 | ||
73b9be8b KS |
9866 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
9867 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
9868 | defined for the given DIE. */ | |
9869 | ||
9870 | static struct attribute * | |
9871 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
9872 | { | |
9873 | struct attribute *attr; | |
9874 | ||
9875 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
9876 | if (attr == NULL) | |
9877 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
9878 | ||
9879 | return attr; | |
9880 | } | |
9881 | ||
9882 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
9883 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
9884 | defined for the given DIE. */ | |
9885 | ||
9886 | static const char * | |
9887 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
9888 | { | |
9889 | const char *linkage_name; | |
9890 | ||
9891 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
9892 | if (linkage_name == NULL) | |
9893 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
9894 | ||
9895 | return linkage_name; | |
9896 | } | |
9897 | ||
94af9270 | 9898 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 9899 | compute the physname for the object, which include a method's: |
9c37b5ae | 9900 | - formal parameters (C++), |
a766d390 | 9901 | - receiver type (Go), |
a766d390 DE |
9902 | |
9903 | The term "physname" is a bit confusing. | |
9904 | For C++, for example, it is the demangled name. | |
9905 | For Go, for example, it's the mangled name. | |
94af9270 | 9906 | |
af6b7be1 JB |
9907 | For Ada, return the DIE's linkage name rather than the fully qualified |
9908 | name. PHYSNAME is ignored.. | |
9909 | ||
94af9270 KS |
9910 | The result is allocated on the objfile_obstack and canonicalized. */ |
9911 | ||
9912 | static const char * | |
15d034d0 TT |
9913 | dwarf2_compute_name (const char *name, |
9914 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
9915 | int physname) |
9916 | { | |
518817b3 | 9917 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
bb5ed363 | 9918 | |
94af9270 KS |
9919 | if (name == NULL) |
9920 | name = dwarf2_name (die, cu); | |
9921 | ||
2ee7123e DE |
9922 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
9923 | but otherwise compute it by typename_concat inside GDB. | |
9924 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 9925 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 9926 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
9927 | will set the demangled name to the result of dwarf2_full_name, and it is |
9928 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
9929 | if (cu->language == language_ada |
9930 | || (cu->language == language_fortran && physname)) | |
9931 | { | |
9932 | /* For Ada unit, we prefer the linkage name over the name, as | |
9933 | the former contains the exported name, which the user expects | |
9934 | to be able to reference. Ideally, we want the user to be able | |
9935 | to reference this entity using either natural or linkage name, | |
9936 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 9937 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 9938 | |
2ee7123e DE |
9939 | if (linkage_name != NULL) |
9940 | return linkage_name; | |
f55ee35c JK |
9941 | } |
9942 | ||
94af9270 KS |
9943 | /* These are the only languages we know how to qualify names in. */ |
9944 | if (name != NULL | |
9c37b5ae | 9945 | && (cu->language == language_cplus |
c44af4eb TT |
9946 | || cu->language == language_fortran || cu->language == language_d |
9947 | || cu->language == language_rust)) | |
94af9270 KS |
9948 | { |
9949 | if (die_needs_namespace (die, cu)) | |
9950 | { | |
0d5cff50 | 9951 | const char *prefix; |
34a68019 | 9952 | const char *canonical_name = NULL; |
94af9270 | 9953 | |
d7e74731 PA |
9954 | string_file buf; |
9955 | ||
94af9270 | 9956 | prefix = determine_prefix (die, cu); |
94af9270 KS |
9957 | if (*prefix != '\0') |
9958 | { | |
43816ebc TT |
9959 | gdb::unique_xmalloc_ptr<char> prefixed_name |
9960 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 9961 | |
43816ebc | 9962 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
9963 | } |
9964 | else | |
d7e74731 | 9965 | buf.puts (name); |
94af9270 | 9966 | |
98bfdba5 PA |
9967 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
9968 | as children with DW_TAG_template_type_param or | |
9969 | DW_TAG_value_type_param. If the latter, add them to the name | |
9970 | here. If the name already has template parameters, then | |
9971 | skip this step; some versions of GCC emit both, and | |
9972 | it is more efficient to use the pre-computed name. | |
9973 | ||
9974 | Something to keep in mind about this process: it is very | |
9975 | unlikely, or in some cases downright impossible, to produce | |
9976 | something that will match the mangled name of a function. | |
9977 | If the definition of the function has the same debug info, | |
9978 | we should be able to match up with it anyway. But fallbacks | |
9979 | using the minimal symbol, for instance to find a method | |
9980 | implemented in a stripped copy of libstdc++, will not work. | |
9981 | If we do not have debug info for the definition, we will have to | |
9982 | match them up some other way. | |
9983 | ||
9984 | When we do name matching there is a related problem with function | |
9985 | templates; two instantiated function templates are allowed to | |
9986 | differ only by their return types, which we do not add here. */ | |
9987 | ||
9988 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
9989 | { | |
9990 | struct attribute *attr; | |
9991 | struct die_info *child; | |
9992 | int first = 1; | |
9993 | ||
9994 | die->building_fullname = 1; | |
9995 | ||
9996 | for (child = die->child; child != NULL; child = child->sibling) | |
9997 | { | |
9998 | struct type *type; | |
12df843f | 9999 | LONGEST value; |
d521ce57 | 10000 | const gdb_byte *bytes; |
98bfdba5 PA |
10001 | struct dwarf2_locexpr_baton *baton; |
10002 | struct value *v; | |
10003 | ||
10004 | if (child->tag != DW_TAG_template_type_param | |
10005 | && child->tag != DW_TAG_template_value_param) | |
10006 | continue; | |
10007 | ||
10008 | if (first) | |
10009 | { | |
d7e74731 | 10010 | buf.puts ("<"); |
98bfdba5 PA |
10011 | first = 0; |
10012 | } | |
10013 | else | |
d7e74731 | 10014 | buf.puts (", "); |
98bfdba5 PA |
10015 | |
10016 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10017 | if (attr == NULL) | |
10018 | { | |
b98664d3 | 10019 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10020 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10021 | continue; |
10022 | } | |
10023 | type = die_type (child, cu); | |
10024 | ||
10025 | if (child->tag == DW_TAG_template_type_param) | |
10026 | { | |
c1ec8cea TT |
10027 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10028 | &type_print_raw_options); | |
98bfdba5 PA |
10029 | continue; |
10030 | } | |
10031 | ||
10032 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10033 | if (attr == NULL) | |
10034 | { | |
b98664d3 | 10035 | complaint (_("template parameter missing " |
3e43a32a | 10036 | "DW_AT_const_value")); |
d7e74731 | 10037 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10038 | continue; |
10039 | } | |
10040 | ||
10041 | dwarf2_const_value_attr (attr, type, name, | |
10042 | &cu->comp_unit_obstack, cu, | |
10043 | &value, &bytes, &baton); | |
10044 | ||
10045 | if (TYPE_NOSIGN (type)) | |
10046 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
10047 | changed, this can use value_print instead. */ | |
d7e74731 | 10048 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10049 | else |
10050 | { | |
10051 | struct value_print_options opts; | |
10052 | ||
10053 | if (baton != NULL) | |
10054 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10055 | baton->data, | |
10056 | baton->size, | |
10057 | baton->per_cu); | |
10058 | else if (bytes != NULL) | |
10059 | { | |
10060 | v = allocate_value (type); | |
10061 | memcpy (value_contents_writeable (v), bytes, | |
10062 | TYPE_LENGTH (type)); | |
10063 | } | |
10064 | else | |
10065 | v = value_from_longest (type, value); | |
10066 | ||
3e43a32a MS |
10067 | /* Specify decimal so that we do not depend on |
10068 | the radix. */ | |
98bfdba5 PA |
10069 | get_formatted_print_options (&opts, 'd'); |
10070 | opts.raw = 1; | |
d7e74731 | 10071 | value_print (v, &buf, &opts); |
98bfdba5 | 10072 | release_value (v); |
98bfdba5 PA |
10073 | } |
10074 | } | |
10075 | ||
10076 | die->building_fullname = 0; | |
10077 | ||
10078 | if (!first) | |
10079 | { | |
10080 | /* Close the argument list, with a space if necessary | |
10081 | (nested templates). */ | |
d7e74731 PA |
10082 | if (!buf.empty () && buf.string ().back () == '>') |
10083 | buf.puts (" >"); | |
98bfdba5 | 10084 | else |
d7e74731 | 10085 | buf.puts (">"); |
98bfdba5 PA |
10086 | } |
10087 | } | |
10088 | ||
9c37b5ae | 10089 | /* For C++ methods, append formal parameter type |
94af9270 | 10090 | information, if PHYSNAME. */ |
6e70227d | 10091 | |
94af9270 | 10092 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10093 | && cu->language == language_cplus) |
94af9270 KS |
10094 | { |
10095 | struct type *type = read_type_die (die, cu); | |
10096 | ||
d7e74731 | 10097 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10098 | &type_print_raw_options); |
94af9270 | 10099 | |
9c37b5ae | 10100 | if (cu->language == language_cplus) |
94af9270 | 10101 | { |
60430eff DJ |
10102 | /* Assume that an artificial first parameter is |
10103 | "this", but do not crash if it is not. RealView | |
10104 | marks unnamed (and thus unused) parameters as | |
10105 | artificial; there is no way to differentiate | |
10106 | the two cases. */ | |
94af9270 KS |
10107 | if (TYPE_NFIELDS (type) > 0 |
10108 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 10109 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
10110 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
10111 | 0)))) | |
d7e74731 | 10112 | buf.puts (" const"); |
94af9270 KS |
10113 | } |
10114 | } | |
10115 | ||
d7e74731 | 10116 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10117 | |
10118 | if (cu->language == language_cplus) | |
34a68019 | 10119 | canonical_name |
322a8516 | 10120 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
be1e3d3e | 10121 | objfile); |
34a68019 TT |
10122 | |
10123 | /* If we only computed INTERMEDIATE_NAME, or if | |
10124 | INTERMEDIATE_NAME is already canonical, then we need to | |
be1e3d3e | 10125 | intern it. */ |
322a8516 | 10126 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
be1e3d3e | 10127 | name = objfile->intern (intermediate_name); |
34a68019 TT |
10128 | else |
10129 | name = canonical_name; | |
94af9270 KS |
10130 | } |
10131 | } | |
10132 | ||
10133 | return name; | |
10134 | } | |
10135 | ||
0114d602 DJ |
10136 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10137 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10138 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10139 | not have a name. NAME may either be from a previous call to |
10140 | dwarf2_name or NULL. | |
10141 | ||
9c37b5ae | 10142 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10143 | |
10144 | static const char * | |
15d034d0 | 10145 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10146 | { |
94af9270 KS |
10147 | return dwarf2_compute_name (name, die, cu, 0); |
10148 | } | |
0114d602 | 10149 | |
94af9270 KS |
10150 | /* Construct a physname for the given DIE in CU. NAME may either be |
10151 | from a previous call to dwarf2_name or NULL. The result will be | |
10152 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10153 | name. | |
0114d602 | 10154 | |
9c37b5ae | 10155 | The output string will be canonicalized (if C++). */ |
0114d602 | 10156 | |
94af9270 | 10157 | static const char * |
15d034d0 | 10158 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10159 | { |
518817b3 | 10160 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
900e11f9 | 10161 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10162 | int need_copy = 1; |
10163 | ||
10164 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10165 | on its own. */ | |
10166 | if (!die_needs_namespace (die, cu)) | |
10167 | return dwarf2_compute_name (name, die, cu, 1); | |
10168 | ||
73b9be8b | 10169 | mangled = dw2_linkage_name (die, cu); |
900e11f9 | 10170 | |
e98c9e7c TT |
10171 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10172 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10173 | if (cu->language == language_rust && mangled != NULL | |
10174 | && strchr (mangled, '{') != NULL) | |
10175 | mangled = NULL; | |
10176 | ||
900e11f9 JK |
10177 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB |
10178 | has computed. */ | |
791afaa2 | 10179 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10180 | if (mangled != NULL) |
900e11f9 | 10181 | { |
900e11f9 | 10182 | |
59cc4834 JB |
10183 | if (language_def (cu->language)->la_store_sym_names_in_linkage_form_p) |
10184 | { | |
10185 | /* Do nothing (do not demangle the symbol name). */ | |
10186 | } | |
10187 | else if (cu->language == language_go) | |
a766d390 | 10188 | { |
5e2db402 TT |
10189 | /* This is a lie, but we already lie to the caller new_symbol. |
10190 | new_symbol assumes we return the mangled name. | |
a766d390 | 10191 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
10192 | } |
10193 | else | |
10194 | { | |
0eb876f5 JB |
10195 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10196 | their return type. It is easier for GDB users to search | |
10197 | for such functions as `name(params)' than `long name(params)'. | |
10198 | In such case the minimal symbol names do not match the full | |
10199 | symbol names but for template functions there is never a need | |
10200 | to look up their definition from their declaration so | |
10201 | the only disadvantage remains the minimal symbol variant | |
10202 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10203 | demangled.reset (gdb_demangle (mangled, |
10204 | (DMGL_PARAMS | DMGL_ANSI | |
10205 | | DMGL_RET_DROP))); | |
a766d390 | 10206 | } |
900e11f9 | 10207 | if (demangled) |
791afaa2 | 10208 | canon = demangled.get (); |
900e11f9 JK |
10209 | else |
10210 | { | |
10211 | canon = mangled; | |
10212 | need_copy = 0; | |
10213 | } | |
10214 | } | |
10215 | ||
10216 | if (canon == NULL || check_physname) | |
10217 | { | |
10218 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10219 | ||
10220 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10221 | { | |
10222 | /* It may not mean a bug in GDB. The compiler could also | |
10223 | compute DW_AT_linkage_name incorrectly. But in such case | |
10224 | GDB would need to be bug-to-bug compatible. */ | |
10225 | ||
b98664d3 | 10226 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10227 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10228 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10229 | objfile_name (objfile)); |
900e11f9 JK |
10230 | |
10231 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10232 | is available here - over computed PHYSNAME. It is safer | |
10233 | against both buggy GDB and buggy compilers. */ | |
10234 | ||
10235 | retval = canon; | |
10236 | } | |
10237 | else | |
10238 | { | |
10239 | retval = physname; | |
10240 | need_copy = 0; | |
10241 | } | |
10242 | } | |
10243 | else | |
10244 | retval = canon; | |
10245 | ||
10246 | if (need_copy) | |
be1e3d3e | 10247 | retval = objfile->intern (retval); |
900e11f9 | 10248 | |
900e11f9 | 10249 | return retval; |
0114d602 DJ |
10250 | } |
10251 | ||
74921315 KS |
10252 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10253 | a new symbol for it. | |
10254 | ||
10255 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10256 | ||
10257 | static int | |
10258 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10259 | { | |
10260 | struct attribute *attr; | |
10261 | ||
10262 | /* If the die does not have a name, this is not a namespace | |
10263 | alias. */ | |
10264 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10265 | if (attr != NULL) | |
10266 | { | |
10267 | int num; | |
10268 | struct die_info *d = die; | |
10269 | struct dwarf2_cu *imported_cu = cu; | |
10270 | ||
10271 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10272 | keep inspecting DIEs until we hit the underlying import. */ | |
10273 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10274 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10275 | { | |
10276 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10277 | if (attr == NULL) | |
10278 | break; | |
10279 | ||
10280 | d = follow_die_ref (d, attr, &imported_cu); | |
10281 | if (d->tag != DW_TAG_imported_declaration) | |
10282 | break; | |
10283 | } | |
10284 | ||
10285 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10286 | { | |
b98664d3 | 10287 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10288 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10289 | return 0; |
10290 | } | |
10291 | ||
10292 | if (attr != NULL) | |
10293 | { | |
10294 | struct type *type; | |
0826b30a | 10295 | sect_offset sect_off = attr->get_ref_die_offset (); |
74921315 | 10296 | |
9c541725 | 10297 | type = get_die_type_at_offset (sect_off, cu->per_cu); |
74921315 KS |
10298 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
10299 | { | |
10300 | /* This declaration is a global namespace alias. Add | |
10301 | a symbol for it whose type is the aliased namespace. */ | |
10302 | new_symbol (die, type, cu); | |
10303 | return 1; | |
10304 | } | |
10305 | } | |
10306 | } | |
10307 | ||
10308 | return 0; | |
10309 | } | |
10310 | ||
22cee43f | 10311 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10312 | current context for CU. |
22cee43f PMR |
10313 | |
10314 | For Ada, imported declarations can materialize renamings, which *may* be | |
10315 | global. However it is impossible (for now?) in DWARF to distinguish | |
10316 | "external" imported declarations and "static" ones. As all imported | |
10317 | declarations seem to be static in all other languages, make them all CU-wide | |
10318 | global only in Ada. */ | |
10319 | ||
10320 | static struct using_direct ** | |
804d2729 | 10321 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10322 | { |
c24bdb02 KS |
10323 | if (cu->language == language_ada |
10324 | && cu->get_builder ()->outermost_context_p ()) | |
10325 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10326 | else |
c24bdb02 | 10327 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10328 | } |
10329 | ||
27aa8d6a SW |
10330 | /* Read the import statement specified by the given die and record it. */ |
10331 | ||
10332 | static void | |
10333 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10334 | { | |
518817b3 | 10335 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
27aa8d6a | 10336 | struct attribute *import_attr; |
32019081 | 10337 | struct die_info *imported_die, *child_die; |
de4affc9 | 10338 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10339 | const char *imported_name; |
794684b6 | 10340 | const char *imported_name_prefix; |
13387711 SW |
10341 | const char *canonical_name; |
10342 | const char *import_alias; | |
10343 | const char *imported_declaration = NULL; | |
794684b6 | 10344 | const char *import_prefix; |
eb1e02fd | 10345 | std::vector<const char *> excludes; |
13387711 | 10346 | |
27aa8d6a SW |
10347 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10348 | if (import_attr == NULL) | |
10349 | { | |
b98664d3 | 10350 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10351 | dwarf_tag_name (die->tag)); |
10352 | return; | |
10353 | } | |
10354 | ||
de4affc9 CC |
10355 | imported_cu = cu; |
10356 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10357 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10358 | if (imported_name == NULL) |
10359 | { | |
10360 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10361 | ||
10362 | The import in the following code: | |
10363 | namespace A | |
10364 | { | |
10365 | typedef int B; | |
10366 | } | |
10367 | ||
10368 | int main () | |
10369 | { | |
10370 | using A::B; | |
10371 | B b; | |
10372 | return b; | |
10373 | } | |
10374 | ||
10375 | ... | |
10376 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
10377 | <52> DW_AT_decl_file : 1 | |
10378 | <53> DW_AT_decl_line : 6 | |
10379 | <54> DW_AT_import : <0x75> | |
10380 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
10381 | <59> DW_AT_name : B | |
10382 | <5b> DW_AT_decl_file : 1 | |
10383 | <5c> DW_AT_decl_line : 2 | |
10384 | <5d> DW_AT_type : <0x6e> | |
10385 | ... | |
10386 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
10387 | <76> DW_AT_byte_size : 4 | |
10388 | <77> DW_AT_encoding : 5 (signed) | |
10389 | ||
10390 | imports the wrong die ( 0x75 instead of 0x58 ). | |
10391 | This case will be ignored until the gcc bug is fixed. */ | |
10392 | return; | |
10393 | } | |
10394 | ||
82856980 SW |
10395 | /* Figure out the local name after import. */ |
10396 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 10397 | |
794684b6 SW |
10398 | /* Figure out where the statement is being imported to. */ |
10399 | import_prefix = determine_prefix (die, cu); | |
10400 | ||
10401 | /* Figure out what the scope of the imported die is and prepend it | |
10402 | to the name of the imported die. */ | |
de4affc9 | 10403 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 10404 | |
f55ee35c JK |
10405 | if (imported_die->tag != DW_TAG_namespace |
10406 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 10407 | { |
13387711 SW |
10408 | imported_declaration = imported_name; |
10409 | canonical_name = imported_name_prefix; | |
794684b6 | 10410 | } |
13387711 | 10411 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 10412 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
10413 | imported_name_prefix, |
10414 | (cu->language == language_d ? "." : "::"), | |
10415 | imported_name, (char *) NULL); | |
13387711 SW |
10416 | else |
10417 | canonical_name = imported_name; | |
794684b6 | 10418 | |
32019081 JK |
10419 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
10420 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 10421 | child_die = child_die->sibling) |
32019081 JK |
10422 | { |
10423 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
10424 | represented by an imported module entry with an import attribute | |
10425 | referring to the module and owned entries corresponding to those | |
10426 | entities that are renamed as part of being imported. */ | |
10427 | ||
10428 | if (child_die->tag != DW_TAG_imported_declaration) | |
10429 | { | |
b98664d3 | 10430 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
10431 | "- DIE at %s [in module %s]"), |
10432 | sect_offset_str (child_die->sect_off), | |
10433 | objfile_name (objfile)); | |
32019081 JK |
10434 | continue; |
10435 | } | |
10436 | ||
10437 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
10438 | if (import_attr == NULL) | |
10439 | { | |
b98664d3 | 10440 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
10441 | dwarf_tag_name (child_die->tag)); |
10442 | continue; | |
10443 | } | |
10444 | ||
10445 | imported_cu = cu; | |
10446 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
10447 | &imported_cu); | |
10448 | imported_name = dwarf2_name (imported_die, imported_cu); | |
10449 | if (imported_name == NULL) | |
10450 | { | |
b98664d3 | 10451 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
10452 | "imported name - DIE at %s [in module %s]"), |
10453 | sect_offset_str (child_die->sect_off), | |
10454 | objfile_name (objfile)); | |
32019081 JK |
10455 | continue; |
10456 | } | |
10457 | ||
eb1e02fd | 10458 | excludes.push_back (imported_name); |
32019081 JK |
10459 | |
10460 | process_die (child_die, cu); | |
10461 | } | |
10462 | ||
804d2729 | 10463 | add_using_directive (using_directives (cu), |
22cee43f PMR |
10464 | import_prefix, |
10465 | canonical_name, | |
10466 | import_alias, | |
10467 | imported_declaration, | |
10468 | excludes, | |
10469 | 0, | |
10470 | &objfile->objfile_obstack); | |
27aa8d6a SW |
10471 | } |
10472 | ||
5230b05a WT |
10473 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
10474 | types, but gives them a size of zero. Starting with version 14, | |
10475 | ICC is compatible with GCC. */ | |
10476 | ||
9068261f | 10477 | static bool |
5230b05a WT |
10478 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
10479 | { | |
10480 | if (!cu->checked_producer) | |
10481 | check_producer (cu); | |
10482 | ||
10483 | return cu->producer_is_icc_lt_14; | |
10484 | } | |
10485 | ||
eb77c9df AB |
10486 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
10487 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
10488 | which says that void functions should not have a DW_AT_type. */ | |
10489 | ||
10490 | static bool | |
10491 | producer_is_icc (struct dwarf2_cu *cu) | |
10492 | { | |
10493 | if (!cu->checked_producer) | |
10494 | check_producer (cu); | |
10495 | ||
10496 | return cu->producer_is_icc; | |
10497 | } | |
10498 | ||
1b80a9fa JK |
10499 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
10500 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
10501 | this, it was first present in GCC release 4.3.0. */ | |
10502 | ||
9068261f | 10503 | static bool |
1b80a9fa JK |
10504 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
10505 | { | |
10506 | if (!cu->checked_producer) | |
10507 | check_producer (cu); | |
10508 | ||
10509 | return cu->producer_is_gcc_lt_4_3; | |
10510 | } | |
10511 | ||
d721ba37 PA |
10512 | static file_and_directory |
10513 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 10514 | { |
d721ba37 PA |
10515 | file_and_directory res; |
10516 | ||
9291a0cd TT |
10517 | /* Find the filename. Do not use dwarf2_name here, since the filename |
10518 | is not a source language identifier. */ | |
d721ba37 PA |
10519 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
10520 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 10521 | |
d721ba37 PA |
10522 | if (res.comp_dir == NULL |
10523 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
10524 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 10525 | { |
d721ba37 PA |
10526 | res.comp_dir_storage = ldirname (res.name); |
10527 | if (!res.comp_dir_storage.empty ()) | |
10528 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 10529 | } |
d721ba37 | 10530 | if (res.comp_dir != NULL) |
9291a0cd TT |
10531 | { |
10532 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
10533 | directory, get rid of it. */ | |
d721ba37 | 10534 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 10535 | |
d721ba37 PA |
10536 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
10537 | res.comp_dir = cp + 1; | |
9291a0cd TT |
10538 | } |
10539 | ||
d721ba37 PA |
10540 | if (res.name == NULL) |
10541 | res.name = "<unknown>"; | |
10542 | ||
10543 | return res; | |
9291a0cd TT |
10544 | } |
10545 | ||
f4dc4d17 DE |
10546 | /* Handle DW_AT_stmt_list for a compilation unit. |
10547 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
10548 | COMP_DIR is the compilation directory. LOWPC is passed to |
10549 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
10550 | |
10551 | static void | |
10552 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 10553 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 10554 | { |
518817b3 SM |
10555 | struct dwarf2_per_objfile *dwarf2_per_objfile |
10556 | = cu->per_cu->dwarf2_per_objfile; | |
2ab95328 | 10557 | struct attribute *attr; |
527f3840 JK |
10558 | struct line_header line_header_local; |
10559 | hashval_t line_header_local_hash; | |
527f3840 JK |
10560 | void **slot; |
10561 | int decode_mapping; | |
2ab95328 | 10562 | |
f4dc4d17 DE |
10563 | gdb_assert (! cu->per_cu->is_debug_types); |
10564 | ||
2ab95328 | 10565 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
10566 | if (attr == NULL) |
10567 | return; | |
10568 | ||
9c541725 | 10569 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
10570 | |
10571 | /* The line header hash table is only created if needed (it exists to | |
10572 | prevent redundant reading of the line table for partial_units). | |
10573 | If we're given a partial_unit, we'll need it. If we're given a | |
10574 | compile_unit, then use the line header hash table if it's already | |
10575 | created, but don't create one just yet. */ | |
10576 | ||
10577 | if (dwarf2_per_objfile->line_header_hash == NULL | |
10578 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 10579 | { |
527f3840 | 10580 | dwarf2_per_objfile->line_header_hash |
d15acc42 TT |
10581 | .reset (htab_create_alloc (127, line_header_hash_voidp, |
10582 | line_header_eq_voidp, | |
10583 | free_line_header_voidp, | |
10584 | xcalloc, xfree)); | |
527f3840 | 10585 | } |
2ab95328 | 10586 | |
9c541725 | 10587 | line_header_local.sect_off = line_offset; |
527f3840 JK |
10588 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
10589 | line_header_local_hash = line_header_hash (&line_header_local); | |
10590 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
10591 | { | |
d15acc42 | 10592 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash.get (), |
527f3840 JK |
10593 | &line_header_local, |
10594 | line_header_local_hash, NO_INSERT); | |
10595 | ||
10596 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
10597 | is not present in *SLOT (since if there is something in *SLOT then | |
10598 | it will be for a partial_unit). */ | |
10599 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 10600 | { |
527f3840 | 10601 | gdb_assert (*slot != NULL); |
9a3c8263 | 10602 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 10603 | return; |
dee91e82 | 10604 | } |
2ab95328 | 10605 | } |
527f3840 JK |
10606 | |
10607 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
10608 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
10609 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
10610 | if (lh == NULL) | |
527f3840 | 10611 | return; |
4c8aa72d PA |
10612 | |
10613 | cu->line_header = lh.release (); | |
10614 | cu->line_header_die_owner = die; | |
527f3840 JK |
10615 | |
10616 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
10617 | slot = NULL; | |
10618 | else | |
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, INSERT); | |
10623 | gdb_assert (slot != NULL); | |
10624 | } | |
10625 | if (slot != NULL && *slot == NULL) | |
10626 | { | |
10627 | /* This newly decoded line number information unit will be owned | |
10628 | by line_header_hash hash table. */ | |
10629 | *slot = cu->line_header; | |
4c8aa72d | 10630 | cu->line_header_die_owner = NULL; |
527f3840 JK |
10631 | } |
10632 | else | |
10633 | { | |
10634 | /* We cannot free any current entry in (*slot) as that struct line_header | |
10635 | may be already used by multiple CUs. Create only temporary decoded | |
10636 | line_header for this CU - it may happen at most once for each line | |
10637 | number information unit. And if we're not using line_header_hash | |
10638 | then this is what we want as well. */ | |
10639 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
10640 | } |
10641 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
10642 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
10643 | decode_mapping); | |
fff8551c | 10644 | |
2ab95328 TT |
10645 | } |
10646 | ||
95554aad | 10647 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 10648 | |
c906108c | 10649 | static void |
e7c27a73 | 10650 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10651 | { |
518817b3 SM |
10652 | struct dwarf2_per_objfile *dwarf2_per_objfile |
10653 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 10654 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 10655 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2acceee2 | 10656 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
10657 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
10658 | struct attribute *attr; | |
c906108c | 10659 | struct die_info *child_die; |
e142c38c | 10660 | CORE_ADDR baseaddr; |
6e70227d | 10661 | |
380618d6 | 10662 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 10663 | baseaddr = objfile->text_section_offset (); |
c906108c | 10664 | |
fae299cd | 10665 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
10666 | |
10667 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
10668 | from finish_block. */ | |
2acceee2 | 10669 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 10670 | lowpc = highpc; |
3e29f34a | 10671 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 10672 | |
d721ba37 | 10673 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 10674 | |
f4b8a18d KW |
10675 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
10676 | standardised yet. As a workaround for the language detection we fall | |
10677 | back to the DW_AT_producer string. */ | |
10678 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
10679 | cu->language = language_opencl; | |
10680 | ||
3019eac3 DE |
10681 | /* Similar hack for Go. */ |
10682 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
10683 | set_cu_language (DW_LANG_Go, cu); | |
10684 | ||
c24bdb02 | 10685 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
10686 | |
10687 | /* Decode line number information if present. We do this before | |
10688 | processing child DIEs, so that the line header table is available | |
10689 | for DW_AT_decl_file. */ | |
d721ba37 | 10690 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
10691 | |
10692 | /* Process all dies in compilation unit. */ | |
10693 | if (die->child != NULL) | |
10694 | { | |
10695 | child_die = die->child; | |
10696 | while (child_die && child_die->tag) | |
10697 | { | |
10698 | process_die (child_die, cu); | |
436c571c | 10699 | child_die = child_die->sibling; |
3019eac3 DE |
10700 | } |
10701 | } | |
10702 | ||
10703 | /* Decode macro information, if present. Dwarf 2 macro information | |
10704 | refers to information in the line number info statement program | |
10705 | header, so we can only read it if we've read the header | |
10706 | successfully. */ | |
0af92d60 JK |
10707 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
10708 | if (attr == NULL) | |
10709 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
10710 | if (attr && cu->line_header) |
10711 | { | |
10712 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 10713 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 10714 | |
43f3e411 | 10715 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
10716 | } |
10717 | else | |
10718 | { | |
10719 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
10720 | if (attr && cu->line_header) | |
10721 | { | |
10722 | unsigned int macro_offset = DW_UNSND (attr); | |
10723 | ||
43f3e411 | 10724 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
10725 | } |
10726 | } | |
3019eac3 DE |
10727 | } |
10728 | ||
c24bdb02 KS |
10729 | void |
10730 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 10731 | { |
f4dc4d17 DE |
10732 | struct type_unit_group *tu_group; |
10733 | int first_time; | |
3019eac3 | 10734 | struct attribute *attr; |
9c541725 | 10735 | unsigned int i; |
0186c6a7 | 10736 | struct signatured_type *sig_type; |
3019eac3 | 10737 | |
f4dc4d17 | 10738 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 10739 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 10740 | |
c24bdb02 | 10741 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 10742 | |
f4dc4d17 | 10743 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 10744 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 10745 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 10746 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 10747 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
10748 | |
10749 | /* If we've already processed this stmt_list there's no real need to | |
10750 | do it again, we could fake it and just recreate the part we need | |
10751 | (file name,index -> symtab mapping). If data shows this optimization | |
10752 | is useful we can do it then. */ | |
43f3e411 | 10753 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
10754 | |
10755 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
10756 | debug info. */ | |
fff8551c | 10757 | line_header_up lh; |
f4dc4d17 | 10758 | if (attr != NULL) |
3019eac3 | 10759 | { |
9c541725 | 10760 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
c24bdb02 | 10761 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
10762 | } |
10763 | if (lh == NULL) | |
10764 | { | |
10765 | if (first_time) | |
c24bdb02 | 10766 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
10767 | else |
10768 | { | |
10769 | gdb_assert (tu_group->symtabs == NULL); | |
c24bdb02 | 10770 | gdb_assert (m_builder == nullptr); |
804d2729 | 10771 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
10772 | m_builder.reset (new struct buildsym_compunit |
10773 | (COMPUNIT_OBJFILE (cust), "", | |
10774 | COMPUNIT_DIRNAME (cust), | |
10775 | compunit_language (cust), | |
10776 | 0, cust)); | |
f4dc4d17 | 10777 | } |
f4dc4d17 | 10778 | return; |
3019eac3 DE |
10779 | } |
10780 | ||
c24bdb02 KS |
10781 | line_header = lh.release (); |
10782 | line_header_die_owner = die; | |
3019eac3 | 10783 | |
f4dc4d17 DE |
10784 | if (first_time) |
10785 | { | |
c24bdb02 | 10786 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 10787 | |
1fd60fc0 DE |
10788 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
10789 | still initializing it, and our caller (a few levels up) | |
10790 | process_full_type_unit still needs to know if this is the first | |
10791 | time. */ | |
10792 | ||
4ac93832 TT |
10793 | tu_group->symtabs |
10794 | = XOBNEWVEC (&COMPUNIT_OBJFILE (cust)->objfile_obstack, | |
10795 | struct symtab *, line_header->file_names_size ()); | |
3019eac3 | 10796 | |
7ba99d21 AT |
10797 | auto &file_names = line_header->file_names (); |
10798 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 10799 | { |
7ba99d21 | 10800 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
10801 | dwarf2_start_subfile (this, fe.name, |
10802 | fe.include_dir (line_header)); | |
10803 | buildsym_compunit *b = get_builder (); | |
10804 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 10805 | { |
4c8aa72d PA |
10806 | /* NOTE: start_subfile will recognize when it's been |
10807 | passed a file it has already seen. So we can't | |
10808 | assume there's a simple mapping from | |
10809 | cu->line_header->file_names to subfiles, plus | |
10810 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
10811 | b->get_current_subfile ()->symtab |
10812 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
10813 | } |
10814 | ||
c24bdb02 | 10815 | fe.symtab = b->get_current_subfile ()->symtab; |
8c43009f | 10816 | tu_group->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
10817 | } |
10818 | } | |
10819 | else | |
3019eac3 | 10820 | { |
c24bdb02 | 10821 | gdb_assert (m_builder == nullptr); |
804d2729 | 10822 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
10823 | m_builder.reset (new struct buildsym_compunit |
10824 | (COMPUNIT_OBJFILE (cust), "", | |
10825 | COMPUNIT_DIRNAME (cust), | |
10826 | compunit_language (cust), | |
10827 | 0, cust)); | |
f4dc4d17 | 10828 | |
7ba99d21 AT |
10829 | auto &file_names = line_header->file_names (); |
10830 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 10831 | { |
7ba99d21 | 10832 | file_entry &fe = file_names[i]; |
4c8aa72d | 10833 | fe.symtab = tu_group->symtabs[i]; |
f4dc4d17 | 10834 | } |
3019eac3 DE |
10835 | } |
10836 | ||
f4dc4d17 DE |
10837 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
10838 | so they don't have a "real" (so to speak) symtab anyway. | |
10839 | There is later code that will assign the main symtab to all symbols | |
10840 | that don't have one. We need to handle the case of a symbol with a | |
10841 | missing symtab (DW_AT_decl_file) anyway. */ | |
10842 | } | |
3019eac3 | 10843 | |
f4dc4d17 DE |
10844 | /* Process DW_TAG_type_unit. |
10845 | For TUs we want to skip the first top level sibling if it's not the | |
10846 | actual type being defined by this TU. In this case the first top | |
10847 | level sibling is there to provide context only. */ | |
3019eac3 | 10848 | |
f4dc4d17 DE |
10849 | static void |
10850 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
10851 | { | |
10852 | struct die_info *child_die; | |
3019eac3 | 10853 | |
f4dc4d17 DE |
10854 | prepare_one_comp_unit (cu, die, language_minimal); |
10855 | ||
10856 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
10857 | We do this before processing child DIEs, so that the line header table | |
10858 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 10859 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
10860 | |
10861 | if (die->child != NULL) | |
10862 | { | |
10863 | child_die = die->child; | |
10864 | while (child_die && child_die->tag) | |
10865 | { | |
10866 | process_die (child_die, cu); | |
436c571c | 10867 | child_die = child_die->sibling; |
f4dc4d17 DE |
10868 | } |
10869 | } | |
3019eac3 DE |
10870 | } |
10871 | \f | |
80626a55 DE |
10872 | /* DWO/DWP files. |
10873 | ||
10874 | http://gcc.gnu.org/wiki/DebugFission | |
10875 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
10876 | ||
10877 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
10878 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
10879 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
10880 | |
10881 | static hashval_t | |
10882 | hash_dwo_file (const void *item) | |
10883 | { | |
9a3c8263 | 10884 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 10885 | hashval_t hash; |
3019eac3 | 10886 | |
a2ce51a0 DE |
10887 | hash = htab_hash_string (dwo_file->dwo_name); |
10888 | if (dwo_file->comp_dir != NULL) | |
10889 | hash += htab_hash_string (dwo_file->comp_dir); | |
10890 | return hash; | |
3019eac3 DE |
10891 | } |
10892 | ||
10893 | static int | |
10894 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
10895 | { | |
9a3c8263 SM |
10896 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
10897 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 10898 | |
a2ce51a0 DE |
10899 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
10900 | return 0; | |
10901 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
10902 | return lhs->comp_dir == rhs->comp_dir; | |
10903 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
10904 | } |
10905 | ||
10906 | /* Allocate a hash table for DWO files. */ | |
10907 | ||
51ac9db5 | 10908 | static htab_up |
298e9637 | 10909 | allocate_dwo_file_hash_table () |
3019eac3 | 10910 | { |
51ac9db5 SM |
10911 | auto delete_dwo_file = [] (void *item) |
10912 | { | |
10913 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
10914 | ||
10915 | delete dwo_file; | |
10916 | }; | |
10917 | ||
bc68fb19 TT |
10918 | return htab_up (htab_create_alloc (41, |
10919 | hash_dwo_file, | |
10920 | eq_dwo_file, | |
10921 | delete_dwo_file, | |
10922 | xcalloc, xfree)); | |
3019eac3 DE |
10923 | } |
10924 | ||
80626a55 DE |
10925 | /* Lookup DWO file DWO_NAME. */ |
10926 | ||
10927 | static void ** | |
ed2dc618 SM |
10928 | lookup_dwo_file_slot (struct dwarf2_per_objfile *dwarf2_per_objfile, |
10929 | const char *dwo_name, | |
10930 | const char *comp_dir) | |
80626a55 DE |
10931 | { |
10932 | struct dwo_file find_entry; | |
10933 | void **slot; | |
10934 | ||
10935 | if (dwarf2_per_objfile->dwo_files == NULL) | |
298e9637 | 10936 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); |
80626a55 | 10937 | |
0ac5b59e DE |
10938 | find_entry.dwo_name = dwo_name; |
10939 | find_entry.comp_dir = comp_dir; | |
51ac9db5 SM |
10940 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files.get (), &find_entry, |
10941 | INSERT); | |
80626a55 DE |
10942 | |
10943 | return slot; | |
10944 | } | |
10945 | ||
3019eac3 DE |
10946 | static hashval_t |
10947 | hash_dwo_unit (const void *item) | |
10948 | { | |
9a3c8263 | 10949 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
10950 | |
10951 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
10952 | return dwo_unit->signature; | |
10953 | } | |
10954 | ||
10955 | static int | |
10956 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
10957 | { | |
9a3c8263 SM |
10958 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
10959 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
10960 | |
10961 | /* The signature is assumed to be unique within the DWO file. | |
10962 | So while object file CU dwo_id's always have the value zero, | |
10963 | that's OK, assuming each object file DWO file has only one CU, | |
10964 | and that's the rule for now. */ | |
10965 | return lhs->signature == rhs->signature; | |
10966 | } | |
10967 | ||
10968 | /* Allocate a hash table for DWO CUs,TUs. | |
10969 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
10970 | ||
b0b6a987 | 10971 | static htab_up |
298e9637 | 10972 | allocate_dwo_unit_table () |
3019eac3 DE |
10973 | { |
10974 | /* Start out with a pretty small number. | |
10975 | Generally DWO files contain only one CU and maybe some TUs. */ | |
b0b6a987 TT |
10976 | return htab_up (htab_create_alloc (3, |
10977 | hash_dwo_unit, | |
10978 | eq_dwo_unit, | |
10979 | NULL, xcalloc, xfree)); | |
3019eac3 DE |
10980 | } |
10981 | ||
19c3d4c9 | 10982 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
10983 | |
10984 | static void | |
19c3d4c9 DE |
10985 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
10986 | const gdb_byte *info_ptr, | |
10987 | struct die_info *comp_unit_die, | |
c0ab21c2 TT |
10988 | struct dwo_file *dwo_file, |
10989 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
10990 | { |
10991 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 10992 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 10993 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 10994 | |
a084a2a6 AT |
10995 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
10996 | if (!signature.has_value ()) | |
3019eac3 | 10997 | { |
b98664d3 | 10998 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 10999 | " its dwo_id [in module %s]"), |
9d8780f0 | 11000 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11001 | return; |
11002 | } | |
11003 | ||
3019eac3 | 11004 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11005 | dwo_unit->signature = *signature; |
8a0459fd | 11006 | dwo_unit->section = section; |
9c541725 | 11007 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11008 | dwo_unit->length = cu->per_cu->length; |
11009 | ||
b4f54984 | 11010 | if (dwarf_read_debug) |
9d8780f0 SM |
11011 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11012 | sect_offset_str (sect_off), | |
9c541725 | 11013 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11014 | } |
11015 | ||
33c5cd75 | 11016 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11017 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11018 | |
33c5cd75 | 11019 | static void |
ed2dc618 | 11020 | create_cus_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e | 11021 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
b0b6a987 | 11022 | dwarf2_section_info §ion, htab_up &cus_htab) |
3019eac3 DE |
11023 | { |
11024 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
d521ce57 | 11025 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11026 | |
96b79293 | 11027 | section.read (objfile); |
33c5cd75 | 11028 | info_ptr = section.buffer; |
3019eac3 DE |
11029 | |
11030 | if (info_ptr == NULL) | |
33c5cd75 | 11031 | return; |
3019eac3 | 11032 | |
b4f54984 | 11033 | if (dwarf_read_debug) |
19c3d4c9 DE |
11034 | { |
11035 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
96b79293 TT |
11036 | section.get_name (), |
11037 | section.get_file_name ()); | |
19c3d4c9 | 11038 | } |
3019eac3 | 11039 | |
33c5cd75 | 11040 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11041 | while (info_ptr < end_ptr) |
11042 | { | |
11043 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11044 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11045 | struct dwo_unit *dwo_unit; |
11046 | void **slot; | |
11047 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11048 | |
11049 | memset (&per_cu, 0, sizeof (per_cu)); | |
e3b94546 | 11050 | per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
3019eac3 | 11051 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11052 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11053 | per_cu.section = §ion; | |
11054 | ||
c0ab21c2 TT |
11055 | cutu_reader reader (&per_cu, cu, &dwo_file); |
11056 | if (!reader.dummy_p) | |
11057 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3e225074 | 11058 | &dwo_file, &read_unit); |
33c5cd75 DB |
11059 | info_ptr += per_cu.length; |
11060 | ||
11061 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11062 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11063 | continue; |
3019eac3 | 11064 | |
33c5cd75 | 11065 | if (cus_htab == NULL) |
298e9637 | 11066 | cus_htab = allocate_dwo_unit_table (); |
19c3d4c9 | 11067 | |
33c5cd75 | 11068 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); |
c0ab21c2 | 11069 | *dwo_unit = read_unit; |
b0b6a987 | 11070 | slot = htab_find_slot (cus_htab.get (), dwo_unit, INSERT); |
33c5cd75 DB |
11071 | gdb_assert (slot != NULL); |
11072 | if (*slot != NULL) | |
19c3d4c9 | 11073 | { |
33c5cd75 DB |
11074 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11075 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11076 | |
b98664d3 | 11077 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11078 | " the entry at offset %s, signature %s"), |
11079 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11080 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11081 | } |
33c5cd75 | 11082 | *slot = (void *)dwo_unit; |
3019eac3 | 11083 | } |
3019eac3 DE |
11084 | } |
11085 | ||
80626a55 DE |
11086 | /* DWP file .debug_{cu,tu}_index section format: |
11087 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
11088 | ||
d2415c6c DE |
11089 | DWP Version 1: |
11090 | ||
80626a55 DE |
11091 | Both index sections have the same format, and serve to map a 64-bit |
11092 | signature to a set of section numbers. Each section begins with a header, | |
11093 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11094 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11095 | aligned at 8-byte boundaries in the file. | |
11096 | ||
d2415c6c DE |
11097 | The index section header consists of: |
11098 | ||
11099 | V, 32 bit version number | |
11100 | -, 32 bits unused | |
11101 | N, 32 bit number of compilation units or type units in the index | |
11102 | M, 32 bit number of slots in the hash table | |
80626a55 | 11103 | |
d2415c6c | 11104 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11105 | |
d2415c6c DE |
11106 | The hash table begins at offset 16 in the section, and consists of an array |
11107 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11108 | order of the application binary). Unused slots in the hash table are 0. | |
11109 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11110 | |
d2415c6c DE |
11111 | The parallel table begins immediately after the hash table |
11112 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11113 | array of 32-bit indexes (using the byte order of the application binary), | |
11114 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11115 | table contains a 32-bit index into the pool of section numbers. For unused | |
11116 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11117 | |
73869dc2 DE |
11118 | The pool of section numbers begins immediately following the hash table |
11119 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11120 | section numbers consists of an array of 32-bit words (using the byte order | |
11121 | of the application binary). Each item in the array is indexed starting | |
11122 | from 0. The hash table entry provides the index of the first section | |
11123 | number in the set. Additional section numbers in the set follow, and the | |
11124 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11125 | ||
11126 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11127 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11128 | be the second entry. Other members of the set may follow in any order. | |
11129 | ||
11130 | --- | |
11131 | ||
11132 | DWP Version 2: | |
11133 | ||
11134 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
11135 | and the entries in the index tables are now offsets into these sections. | |
11136 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11137 | section. | |
11138 | ||
11139 | Index Section Contents: | |
11140 | Header | |
11141 | Hash Table of Signatures dwp_hash_table.hash_table | |
11142 | Parallel Table of Indices dwp_hash_table.unit_table | |
11143 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
11144 | Table of Section Sizes dwp_hash_table.v2.sizes | |
11145 | ||
11146 | The index section header consists of: | |
11147 | ||
11148 | V, 32 bit version number | |
11149 | L, 32 bit number of columns in the table of section offsets | |
11150 | N, 32 bit number of compilation units or type units in the index | |
11151 | M, 32 bit number of slots in the hash table | |
11152 | ||
11153 | Numbers are recorded using the byte order of the application binary. | |
11154 | ||
11155 | The hash table has the same format as version 1. | |
11156 | The parallel table of indices has the same format as version 1, | |
11157 | except that the entries are origin-1 indices into the table of sections | |
11158 | offsets and the table of section sizes. | |
11159 | ||
11160 | The table of offsets begins immediately following the parallel table | |
11161 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11162 | a two-dimensional array of 32-bit words (using the byte order of the | |
11163 | application binary), with L columns and N+1 rows, in row-major order. | |
11164 | Each row in the array is indexed starting from 0. The first row provides | |
11165 | a key to the remaining rows: each column in this row provides an identifier | |
11166 | for a debug section, and the offsets in the same column of subsequent rows | |
11167 | refer to that section. The section identifiers are: | |
11168 | ||
11169 | DW_SECT_INFO 1 .debug_info.dwo | |
11170 | DW_SECT_TYPES 2 .debug_types.dwo | |
11171 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11172 | DW_SECT_LINE 4 .debug_line.dwo | |
11173 | DW_SECT_LOC 5 .debug_loc.dwo | |
11174 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11175 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11176 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11177 | ||
11178 | The offsets provided by the CU and TU index sections are the base offsets | |
11179 | for the contributions made by each CU or TU to the corresponding section | |
11180 | in the package file. Each CU and TU header contains an abbrev_offset | |
11181 | field, used to find the abbreviations table for that CU or TU within the | |
11182 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11183 | be interpreted as relative to the base offset given in the index section. | |
11184 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11185 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11186 | and offsets into other debug sections obtained from DWARF attributes should | |
11187 | also be interpreted as relative to the corresponding base offset. | |
11188 | ||
11189 | The table of sizes begins immediately following the table of offsets. | |
11190 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11191 | with L columns and N rows, in row-major order. Each row in the array is | |
11192 | indexed starting from 1 (row 0 is shared by the two tables). | |
11193 | ||
11194 | --- | |
11195 | ||
11196 | Hash table lookup is handled the same in version 1 and 2: | |
11197 | ||
11198 | We assume that N and M will not exceed 2^32 - 1. | |
11199 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11200 | ||
d2415c6c DE |
11201 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11202 | in the hash table is located as follows: | |
80626a55 | 11203 | |
d2415c6c DE |
11204 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11205 | the low-order k bits all set to 1. | |
80626a55 | 11206 | |
d2415c6c | 11207 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11208 | |
d2415c6c DE |
11209 | 3) If the hash table entry at index H matches the signature, use that |
11210 | entry. If the hash table entry at index H is unused (all zeroes), | |
11211 | terminate the search: the signature is not present in the table. | |
80626a55 | 11212 | |
d2415c6c | 11213 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11214 | |
d2415c6c | 11215 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11216 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11217 | |
11218 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11219 | .debug_{info,types}.dwo in DWP_FILE. | |
11220 | Returns NULL if there isn't one. | |
11221 | Note: This function processes DWP files only, not DWO files. */ | |
11222 | ||
11223 | static struct dwp_hash_table * | |
ed2dc618 SM |
11224 | create_dwp_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11225 | struct dwp_file *dwp_file, int is_debug_types) | |
80626a55 DE |
11226 | { |
11227 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
400174b1 | 11228 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11229 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11230 | struct dwarf2_section_info *index; |
73869dc2 | 11231 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11232 | struct dwp_hash_table *htab; |
11233 | ||
11234 | if (is_debug_types) | |
11235 | index = &dwp_file->sections.tu_index; | |
11236 | else | |
11237 | index = &dwp_file->sections.cu_index; | |
11238 | ||
96b79293 | 11239 | if (index->empty ()) |
80626a55 | 11240 | return NULL; |
96b79293 | 11241 | index->read (objfile); |
80626a55 DE |
11242 | |
11243 | index_ptr = index->buffer; | |
11244 | index_end = index_ptr + index->size; | |
11245 | ||
11246 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
11247 | index_ptr += 4; |
11248 | if (version == 2) | |
11249 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
11250 | else | |
11251 | nr_columns = 0; | |
11252 | index_ptr += 4; | |
80626a55 DE |
11253 | nr_units = read_4_bytes (dbfd, index_ptr); |
11254 | index_ptr += 4; | |
11255 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11256 | index_ptr += 4; | |
11257 | ||
73869dc2 | 11258 | if (version != 1 && version != 2) |
80626a55 | 11259 | { |
21aa081e | 11260 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11261 | " [in module %s]"), |
21aa081e | 11262 | pulongest (version), dwp_file->name); |
80626a55 DE |
11263 | } |
11264 | if (nr_slots != (nr_slots & -nr_slots)) | |
11265 | { | |
21aa081e | 11266 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11267 | " is not power of 2 [in module %s]"), |
21aa081e | 11268 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11269 | } |
11270 | ||
11271 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
11272 | htab->version = version; |
11273 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11274 | htab->nr_units = nr_units; |
11275 | htab->nr_slots = nr_slots; | |
11276 | htab->hash_table = index_ptr; | |
11277 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11278 | |
11279 | /* Exit early if the table is empty. */ | |
11280 | if (nr_slots == 0 || nr_units == 0 | |
11281 | || (version == 2 && nr_columns == 0)) | |
11282 | { | |
11283 | /* All must be zero. */ | |
11284 | if (nr_slots != 0 || nr_units != 0 | |
11285 | || (version == 2 && nr_columns != 0)) | |
11286 | { | |
b98664d3 | 11287 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11288 | " all zero [in modules %s]"), |
11289 | dwp_file->name); | |
11290 | } | |
11291 | return htab; | |
11292 | } | |
11293 | ||
11294 | if (version == 1) | |
11295 | { | |
11296 | htab->section_pool.v1.indices = | |
11297 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11298 | /* It's harder to decide whether the section is too small in v1. | |
11299 | V1 is deprecated anyway so we punt. */ | |
11300 | } | |
11301 | else | |
11302 | { | |
11303 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11304 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11305 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11306 | /* Reverse map for error checking. */ |
11307 | int ids_seen[DW_SECT_MAX + 1]; | |
11308 | int i; | |
11309 | ||
11310 | if (nr_columns < 2) | |
11311 | { | |
11312 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11313 | " in section table [in module %s]"), | |
11314 | dwp_file->name); | |
11315 | } | |
11316 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11317 | { | |
11318 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11319 | " in section table [in module %s]"), | |
11320 | dwp_file->name); | |
11321 | } | |
04fd5eed GB |
11322 | memset (ids, 255, sizeof_ids); |
11323 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11324 | for (i = 0; i < nr_columns; ++i) |
11325 | { | |
11326 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11327 | ||
11328 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11329 | { | |
11330 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11331 | " in section table [in module %s]"), | |
11332 | id, dwp_file->name); | |
11333 | } | |
11334 | if (ids_seen[id] != -1) | |
11335 | { | |
11336 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11337 | " id %d in section table [in module %s]"), | |
11338 | id, dwp_file->name); | |
11339 | } | |
11340 | ids_seen[id] = i; | |
11341 | ids[i] = id; | |
11342 | } | |
11343 | /* Must have exactly one info or types section. */ | |
11344 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11345 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11346 | != 1) | |
11347 | { | |
11348 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11349 | " DWO info/types section [in module %s]"), | |
11350 | dwp_file->name); | |
11351 | } | |
11352 | /* Must have an abbrev section. */ | |
11353 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
11354 | { | |
11355 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11356 | " section [in module %s]"), | |
11357 | dwp_file->name); | |
11358 | } | |
11359 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11360 | htab->section_pool.v2.sizes = | |
11361 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
11362 | * nr_units * nr_columns); | |
11363 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
11364 | * nr_units * nr_columns)) | |
11365 | > index_end) | |
11366 | { | |
11367 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11368 | " [in module %s]"), | |
11369 | dwp_file->name); | |
11370 | } | |
11371 | } | |
80626a55 DE |
11372 | |
11373 | return htab; | |
11374 | } | |
11375 | ||
11376 | /* Update SECTIONS with the data from SECTP. | |
11377 | ||
11378 | This function is like the other "locate" section routines that are | |
11379 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 11380 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
11381 | |
11382 | The result is non-zero for success, or zero if an error was found. */ | |
11383 | ||
11384 | static int | |
73869dc2 DE |
11385 | locate_v1_virtual_dwo_sections (asection *sectp, |
11386 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
11387 | { |
11388 | const struct dwop_section_names *names = &dwop_section_names; | |
11389 | ||
11390 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
11391 | { | |
11392 | /* There can be only one. */ | |
049412e3 | 11393 | if (sections->abbrev.s.section != NULL) |
80626a55 | 11394 | return 0; |
049412e3 | 11395 | sections->abbrev.s.section = sectp; |
fd361982 | 11396 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
11397 | } |
11398 | else if (section_is_p (sectp->name, &names->info_dwo) | |
11399 | || section_is_p (sectp->name, &names->types_dwo)) | |
11400 | { | |
11401 | /* There can be only one. */ | |
049412e3 | 11402 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 11403 | return 0; |
049412e3 | 11404 | sections->info_or_types.s.section = sectp; |
fd361982 | 11405 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 DE |
11406 | } |
11407 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
11408 | { | |
11409 | /* There can be only one. */ | |
049412e3 | 11410 | if (sections->line.s.section != NULL) |
80626a55 | 11411 | return 0; |
049412e3 | 11412 | sections->line.s.section = sectp; |
fd361982 | 11413 | sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
11414 | } |
11415 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
11416 | { | |
11417 | /* There can be only one. */ | |
049412e3 | 11418 | if (sections->loc.s.section != NULL) |
80626a55 | 11419 | return 0; |
049412e3 | 11420 | sections->loc.s.section = sectp; |
fd361982 | 11421 | sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
11422 | } |
11423 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
11424 | { | |
11425 | /* There can be only one. */ | |
049412e3 | 11426 | if (sections->macinfo.s.section != NULL) |
80626a55 | 11427 | return 0; |
049412e3 | 11428 | sections->macinfo.s.section = sectp; |
fd361982 | 11429 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
11430 | } |
11431 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
11432 | { | |
11433 | /* There can be only one. */ | |
049412e3 | 11434 | if (sections->macro.s.section != NULL) |
80626a55 | 11435 | return 0; |
049412e3 | 11436 | sections->macro.s.section = sectp; |
fd361982 | 11437 | sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
11438 | } |
11439 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
11440 | { | |
11441 | /* There can be only one. */ | |
049412e3 | 11442 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 11443 | return 0; |
049412e3 | 11444 | sections->str_offsets.s.section = sectp; |
fd361982 | 11445 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
11446 | } |
11447 | else | |
11448 | { | |
11449 | /* No other kind of section is valid. */ | |
11450 | return 0; | |
11451 | } | |
11452 | ||
11453 | return 1; | |
11454 | } | |
11455 | ||
73869dc2 DE |
11456 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
11457 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11458 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11459 | This is for DWP version 1 files. */ | |
80626a55 DE |
11460 | |
11461 | static struct dwo_unit * | |
ed2dc618 SM |
11462 | create_dwo_unit_in_dwp_v1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11463 | struct dwp_file *dwp_file, | |
73869dc2 DE |
11464 | uint32_t unit_index, |
11465 | const char *comp_dir, | |
11466 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
11467 | { |
11468 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
11469 | const struct dwp_hash_table *dwp_htab = |
11470 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11471 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
11472 | const char *kind = is_debug_types ? "TU" : "CU"; |
11473 | struct dwo_file *dwo_file; | |
11474 | struct dwo_unit *dwo_unit; | |
73869dc2 | 11475 | struct virtual_v1_dwo_sections sections; |
80626a55 | 11476 | void **dwo_file_slot; |
80626a55 DE |
11477 | int i; |
11478 | ||
73869dc2 DE |
11479 | gdb_assert (dwp_file->version == 1); |
11480 | ||
b4f54984 | 11481 | if (dwarf_read_debug) |
80626a55 | 11482 | { |
73869dc2 | 11483 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 11484 | kind, |
73869dc2 | 11485 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
11486 | dwp_file->name); |
11487 | } | |
11488 | ||
19ac8c2e | 11489 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
11490 | Put a limit on the number of sections we look for so that bad data |
11491 | doesn't cause us to loop forever. */ | |
11492 | ||
73869dc2 | 11493 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
11494 | (1 /* .debug_info or .debug_types */ \ |
11495 | + 1 /* .debug_abbrev */ \ | |
11496 | + 1 /* .debug_line */ \ | |
11497 | + 1 /* .debug_loc */ \ | |
11498 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 11499 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
11500 | + 1 /* trailing zero */) |
11501 | ||
11502 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 11503 | |
73869dc2 | 11504 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
11505 | { |
11506 | asection *sectp; | |
11507 | uint32_t section_nr = | |
11508 | read_4_bytes (dbfd, | |
73869dc2 DE |
11509 | dwp_htab->section_pool.v1.indices |
11510 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
11511 | |
11512 | if (section_nr == 0) | |
11513 | break; | |
11514 | if (section_nr >= dwp_file->num_sections) | |
11515 | { | |
11516 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
11517 | " [in module %s]"), | |
11518 | dwp_file->name); | |
11519 | } | |
11520 | ||
11521 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 11522 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
11523 | { |
11524 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
11525 | " [in module %s]"), | |
11526 | dwp_file->name); | |
11527 | } | |
11528 | } | |
11529 | ||
11530 | if (i < 2 | |
96b79293 TT |
11531 | || sections.info_or_types.empty () |
11532 | || sections.abbrev.empty ()) | |
80626a55 DE |
11533 | { |
11534 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
11535 | " [in module %s]"), | |
11536 | dwp_file->name); | |
11537 | } | |
73869dc2 | 11538 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
11539 | { |
11540 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
11541 | " [in module %s]"), | |
11542 | dwp_file->name); | |
11543 | } | |
11544 | ||
11545 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
11546 | have dwo_unit "live" in that. At least for now. | |
11547 | ||
11548 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 11549 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
11550 | file, we can combine them back into a virtual DWO file to save space |
11551 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
11552 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
11553 | ||
791afaa2 TT |
11554 | std::string virtual_dwo_name = |
11555 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
11556 | sections.abbrev.get_id (), |
11557 | sections.line.get_id (), | |
11558 | sections.loc.get_id (), | |
11559 | sections.str_offsets.get_id ()); | |
80626a55 | 11560 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
11561 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
11562 | virtual_dwo_name.c_str (), | |
11563 | comp_dir); | |
80626a55 DE |
11564 | /* Create one if necessary. */ |
11565 | if (*dwo_file_slot == NULL) | |
11566 | { | |
b4f54984 | 11567 | if (dwarf_read_debug) |
80626a55 DE |
11568 | { |
11569 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 11570 | virtual_dwo_name.c_str ()); |
80626a55 | 11571 | } |
51ac9db5 | 11572 | dwo_file = new struct dwo_file; |
be1e3d3e | 11573 | dwo_file->dwo_name = objfile->intern (virtual_dwo_name); |
0ac5b59e | 11574 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
11575 | dwo_file->sections.abbrev = sections.abbrev; |
11576 | dwo_file->sections.line = sections.line; | |
11577 | dwo_file->sections.loc = sections.loc; | |
11578 | dwo_file->sections.macinfo = sections.macinfo; | |
11579 | dwo_file->sections.macro = sections.macro; | |
11580 | dwo_file->sections.str_offsets = sections.str_offsets; | |
11581 | /* The "str" section is global to the entire DWP file. */ | |
11582 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 11583 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
11584 | there's no need to record it in dwo_file. |
11585 | Also, we can't simply record type sections in dwo_file because | |
11586 | we record a pointer into the vector in dwo_unit. As we collect more | |
11587 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
11588 | for it, invalidating all copies of pointers into the previous |
11589 | contents. */ | |
80626a55 DE |
11590 | *dwo_file_slot = dwo_file; |
11591 | } | |
11592 | else | |
11593 | { | |
b4f54984 | 11594 | if (dwarf_read_debug) |
80626a55 DE |
11595 | { |
11596 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 11597 | virtual_dwo_name.c_str ()); |
80626a55 | 11598 | } |
9a3c8263 | 11599 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 11600 | } |
80626a55 DE |
11601 | |
11602 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
11603 | dwo_unit->dwo_file = dwo_file; | |
11604 | dwo_unit->signature = signature; | |
8d749320 SM |
11605 | dwo_unit->section = |
11606 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
8a0459fd | 11607 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 11608 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
11609 | |
11610 | return dwo_unit; | |
11611 | } | |
11612 | ||
73869dc2 DE |
11613 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
11614 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
11615 | piece within that section used by a TU/CU, return a virtual section | |
11616 | of just that piece. */ | |
11617 | ||
11618 | static struct dwarf2_section_info | |
ed2dc618 SM |
11619 | create_dwp_v2_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11620 | struct dwarf2_section_info *section, | |
73869dc2 DE |
11621 | bfd_size_type offset, bfd_size_type size) |
11622 | { | |
11623 | struct dwarf2_section_info result; | |
11624 | asection *sectp; | |
11625 | ||
11626 | gdb_assert (section != NULL); | |
11627 | gdb_assert (!section->is_virtual); | |
11628 | ||
11629 | memset (&result, 0, sizeof (result)); | |
11630 | result.s.containing_section = section; | |
dc4ccb6f | 11631 | result.is_virtual = true; |
73869dc2 DE |
11632 | |
11633 | if (size == 0) | |
11634 | return result; | |
11635 | ||
96b79293 | 11636 | sectp = section->get_bfd_section (); |
73869dc2 DE |
11637 | |
11638 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
11639 | bounds of the real section. This is a pretty-rare event, so just | |
11640 | flag an error (easier) instead of a warning and trying to cope. */ | |
11641 | if (sectp == NULL | |
fd361982 | 11642 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 11643 | { |
73869dc2 DE |
11644 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
11645 | " in section %s [in module %s]"), | |
fd361982 | 11646 | sectp ? bfd_section_name (sectp) : "<unknown>", |
73869dc2 DE |
11647 | objfile_name (dwarf2_per_objfile->objfile)); |
11648 | } | |
11649 | ||
11650 | result.virtual_offset = offset; | |
11651 | result.size = size; | |
11652 | return result; | |
11653 | } | |
11654 | ||
11655 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
11656 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11657 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11658 | This is for DWP version 2 files. */ | |
11659 | ||
11660 | static struct dwo_unit * | |
ed2dc618 SM |
11661 | create_dwo_unit_in_dwp_v2 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11662 | struct dwp_file *dwp_file, | |
73869dc2 DE |
11663 | uint32_t unit_index, |
11664 | const char *comp_dir, | |
11665 | ULONGEST signature, int is_debug_types) | |
11666 | { | |
11667 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
11668 | const struct dwp_hash_table *dwp_htab = | |
11669 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11670 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
11671 | const char *kind = is_debug_types ? "TU" : "CU"; |
11672 | struct dwo_file *dwo_file; | |
11673 | struct dwo_unit *dwo_unit; | |
11674 | struct virtual_v2_dwo_sections sections; | |
11675 | void **dwo_file_slot; | |
73869dc2 DE |
11676 | int i; |
11677 | ||
11678 | gdb_assert (dwp_file->version == 2); | |
11679 | ||
b4f54984 | 11680 | if (dwarf_read_debug) |
73869dc2 DE |
11681 | { |
11682 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
11683 | kind, | |
11684 | pulongest (unit_index), hex_string (signature), | |
11685 | dwp_file->name); | |
11686 | } | |
11687 | ||
11688 | /* Fetch the section offsets of this DWO unit. */ | |
11689 | ||
11690 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
11691 | |
11692 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
11693 | { | |
11694 | uint32_t offset = read_4_bytes (dbfd, | |
11695 | dwp_htab->section_pool.v2.offsets | |
11696 | + (((unit_index - 1) * dwp_htab->nr_columns | |
11697 | + i) | |
11698 | * sizeof (uint32_t))); | |
11699 | uint32_t size = read_4_bytes (dbfd, | |
11700 | dwp_htab->section_pool.v2.sizes | |
11701 | + (((unit_index - 1) * dwp_htab->nr_columns | |
11702 | + i) | |
11703 | * sizeof (uint32_t))); | |
11704 | ||
11705 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
11706 | { | |
11707 | case DW_SECT_INFO: | |
11708 | case DW_SECT_TYPES: | |
11709 | sections.info_or_types_offset = offset; | |
11710 | sections.info_or_types_size = size; | |
11711 | break; | |
11712 | case DW_SECT_ABBREV: | |
11713 | sections.abbrev_offset = offset; | |
11714 | sections.abbrev_size = size; | |
11715 | break; | |
11716 | case DW_SECT_LINE: | |
11717 | sections.line_offset = offset; | |
11718 | sections.line_size = size; | |
11719 | break; | |
11720 | case DW_SECT_LOC: | |
11721 | sections.loc_offset = offset; | |
11722 | sections.loc_size = size; | |
11723 | break; | |
11724 | case DW_SECT_STR_OFFSETS: | |
11725 | sections.str_offsets_offset = offset; | |
11726 | sections.str_offsets_size = size; | |
11727 | break; | |
11728 | case DW_SECT_MACINFO: | |
11729 | sections.macinfo_offset = offset; | |
11730 | sections.macinfo_size = size; | |
11731 | break; | |
11732 | case DW_SECT_MACRO: | |
11733 | sections.macro_offset = offset; | |
11734 | sections.macro_size = size; | |
11735 | break; | |
11736 | } | |
11737 | } | |
11738 | ||
11739 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
11740 | have dwo_unit "live" in that. At least for now. | |
11741 | ||
11742 | The DWP file can be made up of a random collection of CUs and TUs. | |
11743 | However, for each CU + set of TUs that came from the same original DWO | |
11744 | file, we can combine them back into a virtual DWO file to save space | |
11745 | (fewer struct dwo_file objects to allocate). Remember that for really | |
11746 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
11747 | ||
791afaa2 TT |
11748 | std::string virtual_dwo_name = |
11749 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
11750 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
11751 | (long) (sections.line_size ? sections.line_offset : 0), | |
11752 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
11753 | (long) (sections.str_offsets_size | |
11754 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 11755 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
11756 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
11757 | virtual_dwo_name.c_str (), | |
11758 | comp_dir); | |
73869dc2 DE |
11759 | /* Create one if necessary. */ |
11760 | if (*dwo_file_slot == NULL) | |
11761 | { | |
b4f54984 | 11762 | if (dwarf_read_debug) |
73869dc2 DE |
11763 | { |
11764 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 11765 | virtual_dwo_name.c_str ()); |
73869dc2 | 11766 | } |
51ac9db5 | 11767 | dwo_file = new struct dwo_file; |
be1e3d3e | 11768 | dwo_file->dwo_name = objfile->intern (virtual_dwo_name); |
73869dc2 DE |
11769 | dwo_file->comp_dir = comp_dir; |
11770 | dwo_file->sections.abbrev = | |
ed2dc618 | 11771 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
11772 | sections.abbrev_offset, sections.abbrev_size); |
11773 | dwo_file->sections.line = | |
ed2dc618 | 11774 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
11775 | sections.line_offset, sections.line_size); |
11776 | dwo_file->sections.loc = | |
ed2dc618 | 11777 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
11778 | sections.loc_offset, sections.loc_size); |
11779 | dwo_file->sections.macinfo = | |
ed2dc618 | 11780 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
11781 | sections.macinfo_offset, sections.macinfo_size); |
11782 | dwo_file->sections.macro = | |
ed2dc618 | 11783 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
11784 | sections.macro_offset, sections.macro_size); |
11785 | dwo_file->sections.str_offsets = | |
ed2dc618 SM |
11786 | create_dwp_v2_section (dwarf2_per_objfile, |
11787 | &dwp_file->sections.str_offsets, | |
73869dc2 DE |
11788 | sections.str_offsets_offset, |
11789 | sections.str_offsets_size); | |
11790 | /* The "str" section is global to the entire DWP file. */ | |
11791 | dwo_file->sections.str = dwp_file->sections.str; | |
11792 | /* The info or types section is assigned below to dwo_unit, | |
11793 | there's no need to record it in dwo_file. | |
11794 | Also, we can't simply record type sections in dwo_file because | |
11795 | we record a pointer into the vector in dwo_unit. As we collect more | |
11796 | types we'll grow the vector and eventually have to reallocate space | |
11797 | for it, invalidating all copies of pointers into the previous | |
11798 | contents. */ | |
11799 | *dwo_file_slot = dwo_file; | |
11800 | } | |
11801 | else | |
11802 | { | |
b4f54984 | 11803 | if (dwarf_read_debug) |
73869dc2 DE |
11804 | { |
11805 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 11806 | virtual_dwo_name.c_str ()); |
73869dc2 | 11807 | } |
9a3c8263 | 11808 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 11809 | } |
73869dc2 DE |
11810 | |
11811 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
11812 | dwo_unit->dwo_file = dwo_file; | |
11813 | dwo_unit->signature = signature; | |
8d749320 SM |
11814 | dwo_unit->section = |
11815 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
ed2dc618 SM |
11816 | *dwo_unit->section = create_dwp_v2_section (dwarf2_per_objfile, |
11817 | is_debug_types | |
73869dc2 DE |
11818 | ? &dwp_file->sections.types |
11819 | : &dwp_file->sections.info, | |
11820 | sections.info_or_types_offset, | |
11821 | sections.info_or_types_size); | |
11822 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
11823 | ||
11824 | return dwo_unit; | |
11825 | } | |
11826 | ||
57d63ce2 DE |
11827 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
11828 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
11829 | |
11830 | static struct dwo_unit * | |
ed2dc618 SM |
11831 | lookup_dwo_unit_in_dwp (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11832 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 11833 | ULONGEST signature, int is_debug_types) |
80626a55 | 11834 | { |
57d63ce2 DE |
11835 | const struct dwp_hash_table *dwp_htab = |
11836 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11837 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 11838 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
11839 | uint32_t hash = signature & mask; |
11840 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
11841 | unsigned int i; | |
11842 | void **slot; | |
870f88f7 | 11843 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
11844 | |
11845 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
11846 | find_dwo_cu.signature = signature; | |
19ac8c2e | 11847 | slot = htab_find_slot (is_debug_types |
48b490f2 TT |
11848 | ? dwp_file->loaded_tus.get () |
11849 | : dwp_file->loaded_cus.get (), | |
19ac8c2e | 11850 | &find_dwo_cu, INSERT); |
80626a55 DE |
11851 | |
11852 | if (*slot != NULL) | |
9a3c8263 | 11853 | return (struct dwo_unit *) *slot; |
80626a55 DE |
11854 | |
11855 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 11856 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
11857 | { |
11858 | ULONGEST signature_in_table; | |
11859 | ||
11860 | signature_in_table = | |
57d63ce2 | 11861 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
11862 | if (signature_in_table == signature) |
11863 | { | |
57d63ce2 DE |
11864 | uint32_t unit_index = |
11865 | read_4_bytes (dbfd, | |
11866 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 11867 | |
73869dc2 DE |
11868 | if (dwp_file->version == 1) |
11869 | { | |
ed2dc618 SM |
11870 | *slot = create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile, |
11871 | dwp_file, unit_index, | |
73869dc2 DE |
11872 | comp_dir, signature, |
11873 | is_debug_types); | |
11874 | } | |
11875 | else | |
11876 | { | |
ed2dc618 SM |
11877 | *slot = create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile, |
11878 | dwp_file, unit_index, | |
73869dc2 DE |
11879 | comp_dir, signature, |
11880 | is_debug_types); | |
11881 | } | |
9a3c8263 | 11882 | return (struct dwo_unit *) *slot; |
80626a55 DE |
11883 | } |
11884 | if (signature_in_table == 0) | |
11885 | return NULL; | |
11886 | hash = (hash + hash2) & mask; | |
11887 | } | |
11888 | ||
11889 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
11890 | " [in module %s]"), | |
11891 | dwp_file->name); | |
11892 | } | |
11893 | ||
ab5088bf | 11894 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
11895 | Open the file specified by FILE_NAME and hand it off to BFD for |
11896 | preliminary analysis. Return a newly initialized bfd *, which | |
11897 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 11898 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
11899 | SEARCH_CWD is true if the current directory is to be searched. |
11900 | It will be searched before debug-file-directory. | |
13aaf454 DE |
11901 | If successful, the file is added to the bfd include table of the |
11902 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 11903 | If unable to find/open the file, return NULL. |
3019eac3 DE |
11904 | NOTE: This function is derived from symfile_bfd_open. */ |
11905 | ||
192b62ce | 11906 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
11907 | try_open_dwop_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11908 | const char *file_name, int is_dwp, int search_cwd) | |
3019eac3 | 11909 | { |
24b9144d | 11910 | int desc; |
9c02c129 DE |
11911 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
11912 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
11913 | to debug_file_directory. */ | |
e0cc99a6 | 11914 | const char *search_path; |
9c02c129 DE |
11915 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
11916 | ||
e0cc99a6 | 11917 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
11918 | if (search_cwd) |
11919 | { | |
11920 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
11921 | { |
11922 | search_path_holder.reset (concat (".", dirname_separator_string, | |
11923 | debug_file_directory, | |
11924 | (char *) NULL)); | |
11925 | search_path = search_path_holder.get (); | |
11926 | } | |
6ac97d4c | 11927 | else |
e0cc99a6 | 11928 | search_path = "."; |
6ac97d4c | 11929 | } |
9c02c129 | 11930 | else |
e0cc99a6 | 11931 | search_path = debug_file_directory; |
3019eac3 | 11932 | |
24b9144d | 11933 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
11934 | if (is_dwp) |
11935 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
11936 | |
11937 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 11938 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
11939 | O_RDONLY | O_BINARY, &absolute_name); |
11940 | if (desc < 0) | |
11941 | return NULL; | |
11942 | ||
e0cc99a6 TT |
11943 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
11944 | gnutarget, desc)); | |
9c02c129 DE |
11945 | if (sym_bfd == NULL) |
11946 | return NULL; | |
192b62ce | 11947 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 11948 | |
192b62ce TT |
11949 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
11950 | return NULL; | |
3019eac3 | 11951 | |
13aaf454 DE |
11952 | /* Success. Record the bfd as having been included by the objfile's bfd. |
11953 | This is important because things like demangled_names_hash lives in the | |
11954 | objfile's per_bfd space and may have references to things like symbol | |
11955 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 11956 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 11957 | |
3019eac3 DE |
11958 | return sym_bfd; |
11959 | } | |
11960 | ||
ab5088bf | 11961 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
11962 | COMP_DIR is the DW_AT_comp_dir attribute. |
11963 | The result is the bfd handle of the file. | |
11964 | If there is a problem finding or opening the file, return NULL. | |
11965 | Upon success, the canonicalized path of the file is stored in the bfd, | |
11966 | same as symfile_bfd_open. */ | |
11967 | ||
192b62ce | 11968 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
11969 | open_dwo_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11970 | const char *file_name, const char *comp_dir) | |
3019eac3 | 11971 | { |
80626a55 | 11972 | if (IS_ABSOLUTE_PATH (file_name)) |
ed2dc618 SM |
11973 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
11974 | 0 /*is_dwp*/, 0 /*search_cwd*/); | |
3019eac3 DE |
11975 | |
11976 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
11977 | ||
11978 | if (comp_dir != NULL) | |
11979 | { | |
43816ebc TT |
11980 | gdb::unique_xmalloc_ptr<char> path_to_try |
11981 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
11982 | |
11983 | /* NOTE: If comp_dir is a relative path, this will also try the | |
11984 | search path, which seems useful. */ | |
ed2dc618 | 11985 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, |
43816ebc | 11986 | path_to_try.get (), |
ed2dc618 | 11987 | 0 /*is_dwp*/, |
192b62ce | 11988 | 1 /*search_cwd*/)); |
3019eac3 DE |
11989 | if (abfd != NULL) |
11990 | return abfd; | |
11991 | } | |
11992 | ||
11993 | /* That didn't work, try debug-file-directory, which, despite its name, | |
11994 | is a list of paths. */ | |
11995 | ||
11996 | if (*debug_file_directory == '\0') | |
11997 | return NULL; | |
11998 | ||
ed2dc618 SM |
11999 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12000 | 0 /*is_dwp*/, 1 /*search_cwd*/); | |
3019eac3 DE |
12001 | } |
12002 | ||
80626a55 DE |
12003 | /* This function is mapped across the sections and remembers the offset and |
12004 | size of each of the DWO debugging sections we are interested in. */ | |
12005 | ||
12006 | static void | |
12007 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12008 | { | |
9a3c8263 | 12009 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12010 | const struct dwop_section_names *names = &dwop_section_names; |
12011 | ||
12012 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12013 | { | |
049412e3 | 12014 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12015 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12016 | } |
12017 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12018 | { | |
049412e3 | 12019 | dwo_sections->info.s.section = sectp; |
fd361982 | 12020 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 DE |
12021 | } |
12022 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12023 | { | |
049412e3 | 12024 | dwo_sections->line.s.section = sectp; |
fd361982 | 12025 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12026 | } |
12027 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12028 | { | |
049412e3 | 12029 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12030 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
12031 | } |
12032 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12033 | { | |
049412e3 | 12034 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12035 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12036 | } |
12037 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12038 | { | |
049412e3 | 12039 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12040 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
12041 | } |
12042 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
12043 | { | |
049412e3 | 12044 | dwo_sections->str.s.section = sectp; |
fd361982 | 12045 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 DE |
12046 | } |
12047 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12048 | { | |
049412e3 | 12049 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12050 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12051 | } |
12052 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12053 | { | |
12054 | struct dwarf2_section_info type_section; | |
12055 | ||
12056 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12057 | type_section.s.section = sectp; |
fd361982 | 12058 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12059 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12060 | } |
12061 | } | |
12062 | ||
ab5088bf | 12063 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12064 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12065 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12066 | |
12067 | static struct dwo_file * | |
0ac5b59e DE |
12068 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
12069 | const char *dwo_name, const char *comp_dir) | |
3019eac3 | 12070 | { |
ed2dc618 | 12071 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 12072 | |
fb1eb2f9 | 12073 | gdb_bfd_ref_ptr dbfd = open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12074 | if (dbfd == NULL) |
12075 | { | |
b4f54984 | 12076 | if (dwarf_read_debug) |
80626a55 DE |
12077 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12078 | return NULL; | |
12079 | } | |
263db9a1 | 12080 | |
51ac9db5 | 12081 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12082 | dwo_file->dwo_name = dwo_name; |
12083 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12084 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12085 | |
fb1eb2f9 | 12086 | bfd_map_over_sections (dwo_file->dbfd.get (), dwarf2_locate_dwo_sections, |
192b62ce | 12087 | &dwo_file->sections); |
3019eac3 | 12088 | |
18a8505e AT |
12089 | create_cus_hash_table (dwarf2_per_objfile, per_cu->cu, *dwo_file, |
12090 | dwo_file->sections.info, dwo_file->cus); | |
3019eac3 | 12091 | |
263db9a1 | 12092 | create_debug_types_hash_table (dwarf2_per_objfile, dwo_file.get (), |
ed2dc618 | 12093 | dwo_file->sections.types, dwo_file->tus); |
3019eac3 | 12094 | |
b4f54984 | 12095 | if (dwarf_read_debug) |
80626a55 DE |
12096 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
12097 | ||
263db9a1 | 12098 | return dwo_file.release (); |
3019eac3 DE |
12099 | } |
12100 | ||
80626a55 | 12101 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12102 | size of each of the DWP debugging sections common to version 1 and 2 that |
12103 | we are interested in. */ | |
3019eac3 | 12104 | |
80626a55 | 12105 | static void |
73869dc2 DE |
12106 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
12107 | void *dwp_file_ptr) | |
3019eac3 | 12108 | { |
9a3c8263 | 12109 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
12110 | const struct dwop_section_names *names = &dwop_section_names; |
12111 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12112 | |
80626a55 | 12113 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12114 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12115 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12116 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12117 | |
80626a55 DE |
12118 | /* Look for specific sections that we need. */ |
12119 | if (section_is_p (sectp->name, &names->str_dwo)) | |
12120 | { | |
049412e3 | 12121 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 12122 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 DE |
12123 | } |
12124 | else if (section_is_p (sectp->name, &names->cu_index)) | |
12125 | { | |
049412e3 | 12126 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 12127 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12128 | } |
12129 | else if (section_is_p (sectp->name, &names->tu_index)) | |
12130 | { | |
049412e3 | 12131 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 12132 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12133 | } |
12134 | } | |
3019eac3 | 12135 | |
73869dc2 DE |
12136 | /* This function is mapped across the sections and remembers the offset and |
12137 | size of each of the DWP version 2 debugging sections that we are interested | |
12138 | in. This is split into a separate function because we don't know if we | |
12139 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
12140 | ||
12141 | static void | |
12142 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12143 | { | |
9a3c8263 | 12144 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12145 | const struct dwop_section_names *names = &dwop_section_names; |
12146 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12147 | ||
12148 | /* Record the ELF section number for later lookup: this is what the | |
12149 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12150 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12151 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12152 | ||
12153 | /* Look for specific sections that we need. */ | |
12154 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12155 | { | |
049412e3 | 12156 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 12157 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 DE |
12158 | } |
12159 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12160 | { | |
049412e3 | 12161 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 12162 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 DE |
12163 | } |
12164 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12165 | { | |
049412e3 | 12166 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 12167 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 DE |
12168 | } |
12169 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12170 | { | |
049412e3 | 12171 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 12172 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 DE |
12173 | } |
12174 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12175 | { | |
049412e3 | 12176 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 12177 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 DE |
12178 | } |
12179 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12180 | { | |
049412e3 | 12181 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 12182 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 DE |
12183 | } |
12184 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12185 | { | |
049412e3 | 12186 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 12187 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 DE |
12188 | } |
12189 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12190 | { | |
049412e3 | 12191 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 12192 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
12193 | } |
12194 | } | |
12195 | ||
80626a55 | 12196 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12197 | |
80626a55 DE |
12198 | static hashval_t |
12199 | hash_dwp_loaded_cutus (const void *item) | |
12200 | { | |
9a3c8263 | 12201 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 12202 | |
80626a55 DE |
12203 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
12204 | return dwo_unit->signature; | |
3019eac3 DE |
12205 | } |
12206 | ||
80626a55 | 12207 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12208 | |
80626a55 DE |
12209 | static int |
12210 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 12211 | { |
9a3c8263 SM |
12212 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
12213 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 12214 | |
80626a55 DE |
12215 | return dua->signature == dub->signature; |
12216 | } | |
3019eac3 | 12217 | |
80626a55 | 12218 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12219 | |
48b490f2 | 12220 | static htab_up |
298e9637 | 12221 | allocate_dwp_loaded_cutus_table () |
80626a55 | 12222 | { |
48b490f2 TT |
12223 | return htab_up (htab_create_alloc (3, |
12224 | hash_dwp_loaded_cutus, | |
12225 | eq_dwp_loaded_cutus, | |
12226 | NULL, xcalloc, xfree)); | |
80626a55 | 12227 | } |
3019eac3 | 12228 | |
ab5088bf DE |
12229 | /* Try to open DWP file FILE_NAME. |
12230 | The result is the bfd handle of the file. | |
12231 | If there is a problem finding or opening the file, return NULL. | |
12232 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12233 | same as symfile_bfd_open. */ | |
12234 | ||
192b62ce | 12235 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12236 | open_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12237 | const char *file_name) | |
ab5088bf | 12238 | { |
ed2dc618 SM |
12239 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, file_name, |
12240 | 1 /*is_dwp*/, | |
192b62ce | 12241 | 1 /*search_cwd*/)); |
6ac97d4c DE |
12242 | if (abfd != NULL) |
12243 | return abfd; | |
12244 | ||
12245 | /* Work around upstream bug 15652. | |
12246 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
12247 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
12248 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
12249 | of the executable's path may have discarded the needed info. | |
12250 | [IWBN if the dwp file name was recorded in the executable, akin to | |
12251 | .gnu_debuglink, but that doesn't exist yet.] | |
12252 | Strip the directory from FILE_NAME and search again. */ | |
12253 | if (*debug_file_directory != '\0') | |
12254 | { | |
12255 | /* Don't implicitly search the current directory here. | |
12256 | If the user wants to search "." to handle this case, | |
12257 | it must be added to debug-file-directory. */ | |
ed2dc618 SM |
12258 | return try_open_dwop_file (dwarf2_per_objfile, |
12259 | lbasename (file_name), 1 /*is_dwp*/, | |
6ac97d4c DE |
12260 | 0 /*search_cwd*/); |
12261 | } | |
12262 | ||
12263 | return NULL; | |
ab5088bf DE |
12264 | } |
12265 | ||
80626a55 DE |
12266 | /* Initialize the use of the DWP file for the current objfile. |
12267 | By convention the name of the DWP file is ${objfile}.dwp. | |
12268 | The result is NULL if it can't be found. */ | |
a766d390 | 12269 | |
400174b1 | 12270 | static std::unique_ptr<struct dwp_file> |
ed2dc618 | 12271 | open_and_init_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
80626a55 DE |
12272 | { |
12273 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 | 12274 | |
82bf32bc JK |
12275 | /* Try to find first .dwp for the binary file before any symbolic links |
12276 | resolving. */ | |
6c447423 DE |
12277 | |
12278 | /* If the objfile is a debug file, find the name of the real binary | |
12279 | file and get the name of dwp file from there. */ | |
d721ba37 | 12280 | std::string dwp_name; |
6c447423 DE |
12281 | if (objfile->separate_debug_objfile_backlink != NULL) |
12282 | { | |
12283 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
12284 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 12285 | |
d721ba37 | 12286 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
12287 | } |
12288 | else | |
d721ba37 PA |
12289 | dwp_name = objfile->original_name; |
12290 | ||
12291 | dwp_name += ".dwp"; | |
80626a55 | 12292 | |
ed2dc618 | 12293 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
12294 | if (dbfd == NULL |
12295 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
12296 | { | |
12297 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
12298 | dwp_name = objfile_name (objfile); |
12299 | dwp_name += ".dwp"; | |
ed2dc618 | 12300 | dbfd = open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
12301 | } |
12302 | ||
80626a55 DE |
12303 | if (dbfd == NULL) |
12304 | { | |
b4f54984 | 12305 | if (dwarf_read_debug) |
d721ba37 | 12306 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
400174b1 | 12307 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 12308 | } |
400174b1 TT |
12309 | |
12310 | const char *name = bfd_get_filename (dbfd.get ()); | |
12311 | std::unique_ptr<struct dwp_file> dwp_file | |
12312 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 12313 | |
0a0f4c01 | 12314 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 DE |
12315 | dwp_file->elf_sections = |
12316 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
12317 | dwp_file->num_sections, asection *); | |
12318 | ||
400174b1 TT |
12319 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12320 | dwarf2_locate_common_dwp_sections, | |
12321 | dwp_file.get ()); | |
80626a55 | 12322 | |
400174b1 TT |
12323 | dwp_file->cus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
12324 | 0); | |
80626a55 | 12325 | |
400174b1 TT |
12326 | dwp_file->tus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
12327 | 1); | |
80626a55 | 12328 | |
73869dc2 | 12329 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
12330 | if (dwp_file->cus && dwp_file->tus |
12331 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
12332 | { |
12333 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 12334 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 12335 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
12336 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
12337 | " TU version %s [in DWP file %s]"), | |
12338 | pulongest (dwp_file->cus->version), | |
d721ba37 | 12339 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 12340 | } |
08302ed2 DE |
12341 | |
12342 | if (dwp_file->cus) | |
12343 | dwp_file->version = dwp_file->cus->version; | |
12344 | else if (dwp_file->tus) | |
12345 | dwp_file->version = dwp_file->tus->version; | |
12346 | else | |
12347 | dwp_file->version = 2; | |
73869dc2 DE |
12348 | |
12349 | if (dwp_file->version == 2) | |
400174b1 TT |
12350 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12351 | dwarf2_locate_v2_dwp_sections, | |
12352 | dwp_file.get ()); | |
73869dc2 | 12353 | |
298e9637 SM |
12354 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (); |
12355 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (); | |
80626a55 | 12356 | |
b4f54984 | 12357 | if (dwarf_read_debug) |
80626a55 DE |
12358 | { |
12359 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
12360 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
12361 | " %s CUs, %s TUs\n", |
12362 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
12363 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
12364 | } |
12365 | ||
12366 | return dwp_file; | |
3019eac3 | 12367 | } |
c906108c | 12368 | |
ab5088bf DE |
12369 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
12370 | ||
12371 | static struct dwp_file * | |
ed2dc618 | 12372 | get_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ab5088bf DE |
12373 | { |
12374 | if (! dwarf2_per_objfile->dwp_checked) | |
12375 | { | |
ed2dc618 SM |
12376 | dwarf2_per_objfile->dwp_file |
12377 | = open_and_init_dwp_file (dwarf2_per_objfile); | |
ab5088bf DE |
12378 | dwarf2_per_objfile->dwp_checked = 1; |
12379 | } | |
400174b1 | 12380 | return dwarf2_per_objfile->dwp_file.get (); |
ab5088bf DE |
12381 | } |
12382 | ||
80626a55 DE |
12383 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
12384 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
12385 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 12386 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
12387 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
12388 | ||
12389 | This is called, for example, when wanting to read a variable with a | |
12390 | complex location. Therefore we don't want to do file i/o for every call. | |
12391 | Therefore we don't want to look for a DWO file on every call. | |
12392 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
12393 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
12394 | for a DWO file. | |
12395 | ||
1c658ad5 | 12396 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 12397 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 12398 | |
3019eac3 | 12399 | static struct dwo_unit * |
80626a55 DE |
12400 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
12401 | const char *dwo_name, const char *comp_dir, | |
12402 | ULONGEST signature, int is_debug_types) | |
3019eac3 | 12403 | { |
ed2dc618 | 12404 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_unit->dwarf2_per_objfile; |
3019eac3 | 12405 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 DE |
12406 | const char *kind = is_debug_types ? "TU" : "CU"; |
12407 | void **dwo_file_slot; | |
3019eac3 | 12408 | struct dwo_file *dwo_file; |
80626a55 | 12409 | struct dwp_file *dwp_file; |
cb1df416 | 12410 | |
6a506a2d DE |
12411 | /* First see if there's a DWP file. |
12412 | If we have a DWP file but didn't find the DWO inside it, don't | |
12413 | look for the original DWO file. It makes gdb behave differently | |
12414 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 12415 | |
ed2dc618 | 12416 | dwp_file = get_dwp_file (dwarf2_per_objfile); |
80626a55 | 12417 | if (dwp_file != NULL) |
cf2c3c16 | 12418 | { |
80626a55 DE |
12419 | const struct dwp_hash_table *dwp_htab = |
12420 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12421 | ||
12422 | if (dwp_htab != NULL) | |
12423 | { | |
12424 | struct dwo_unit *dwo_cutu = | |
ed2dc618 | 12425 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, comp_dir, |
57d63ce2 | 12426 | signature, is_debug_types); |
80626a55 DE |
12427 | |
12428 | if (dwo_cutu != NULL) | |
12429 | { | |
b4f54984 | 12430 | if (dwarf_read_debug) |
80626a55 DE |
12431 | { |
12432 | fprintf_unfiltered (gdb_stdlog, | |
12433 | "Virtual DWO %s %s found: @%s\n", | |
12434 | kind, hex_string (signature), | |
12435 | host_address_to_string (dwo_cutu)); | |
12436 | } | |
12437 | return dwo_cutu; | |
12438 | } | |
12439 | } | |
12440 | } | |
6a506a2d | 12441 | else |
80626a55 | 12442 | { |
6a506a2d | 12443 | /* No DWP file, look for the DWO file. */ |
80626a55 | 12444 | |
ed2dc618 SM |
12445 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12446 | dwo_name, comp_dir); | |
6a506a2d | 12447 | if (*dwo_file_slot == NULL) |
80626a55 | 12448 | { |
6a506a2d DE |
12449 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
12450 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 12451 | } |
6a506a2d | 12452 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 12453 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 12454 | |
6a506a2d | 12455 | if (dwo_file != NULL) |
19c3d4c9 | 12456 | { |
6a506a2d DE |
12457 | struct dwo_unit *dwo_cutu = NULL; |
12458 | ||
12459 | if (is_debug_types && dwo_file->tus) | |
12460 | { | |
12461 | struct dwo_unit find_dwo_cutu; | |
12462 | ||
12463 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12464 | find_dwo_cutu.signature = signature; | |
9a3c8263 | 12465 | dwo_cutu |
b0b6a987 TT |
12466 | = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
12467 | &find_dwo_cutu); | |
6a506a2d | 12468 | } |
33c5cd75 | 12469 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 12470 | { |
33c5cd75 DB |
12471 | struct dwo_unit find_dwo_cutu; |
12472 | ||
12473 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12474 | find_dwo_cutu.signature = signature; | |
b0b6a987 | 12475 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus.get (), |
33c5cd75 | 12476 | &find_dwo_cutu); |
6a506a2d DE |
12477 | } |
12478 | ||
12479 | if (dwo_cutu != NULL) | |
12480 | { | |
b4f54984 | 12481 | if (dwarf_read_debug) |
6a506a2d DE |
12482 | { |
12483 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
12484 | kind, dwo_name, hex_string (signature), | |
12485 | host_address_to_string (dwo_cutu)); | |
12486 | } | |
12487 | return dwo_cutu; | |
80626a55 DE |
12488 | } |
12489 | } | |
2e276125 | 12490 | } |
9cdd5dbd | 12491 | |
80626a55 DE |
12492 | /* We didn't find it. This could mean a dwo_id mismatch, or |
12493 | someone deleted the DWO/DWP file, or the search path isn't set up | |
12494 | correctly to find the file. */ | |
12495 | ||
b4f54984 | 12496 | if (dwarf_read_debug) |
80626a55 DE |
12497 | { |
12498 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
12499 | kind, dwo_name, hex_string (signature)); | |
12500 | } | |
3019eac3 | 12501 | |
6656a72d DE |
12502 | /* This is a warning and not a complaint because it can be caused by |
12503 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
12504 | { |
12505 | /* Print the name of the DWP file if we looked there, helps the user | |
12506 | better diagnose the problem. */ | |
791afaa2 | 12507 | std::string dwp_text; |
43942612 DE |
12508 | |
12509 | if (dwp_file != NULL) | |
791afaa2 TT |
12510 | dwp_text = string_printf (" [in DWP file %s]", |
12511 | lbasename (dwp_file->name)); | |
43942612 | 12512 | |
9d8780f0 | 12513 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 DE |
12514 | " [in module %s]"), |
12515 | kind, dwo_name, hex_string (signature), | |
791afaa2 | 12516 | dwp_text.c_str (), |
43942612 | 12517 | this_unit->is_debug_types ? "TU" : "CU", |
9d8780f0 | 12518 | sect_offset_str (this_unit->sect_off), objfile_name (objfile)); |
43942612 | 12519 | } |
3019eac3 | 12520 | return NULL; |
5fb290d7 DJ |
12521 | } |
12522 | ||
80626a55 DE |
12523 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
12524 | See lookup_dwo_cutu_unit for details. */ | |
12525 | ||
12526 | static struct dwo_unit * | |
12527 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
12528 | const char *dwo_name, const char *comp_dir, | |
12529 | ULONGEST signature) | |
12530 | { | |
12531 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
12532 | } | |
12533 | ||
12534 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
12535 | See lookup_dwo_cutu_unit for details. */ | |
12536 | ||
12537 | static struct dwo_unit * | |
12538 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
12539 | const char *dwo_name, const char *comp_dir) | |
12540 | { | |
12541 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
12542 | } | |
12543 | ||
89e63ee4 DE |
12544 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
12545 | ||
12546 | static int | |
12547 | queue_and_load_dwo_tu (void **slot, void *info) | |
12548 | { | |
12549 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
12550 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
12551 | ULONGEST signature = dwo_unit->signature; | |
12552 | struct signatured_type *sig_type = | |
12553 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
12554 | ||
12555 | if (sig_type != NULL) | |
12556 | { | |
12557 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
12558 | ||
12559 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
12560 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
12561 | while processing PER_CU. */ | |
12562 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
12563 | load_full_type_unit (sig_cu); | |
ae640021 | 12564 | per_cu->imported_symtabs_push (sig_cu); |
89e63ee4 DE |
12565 | } |
12566 | ||
12567 | return 1; | |
12568 | } | |
12569 | ||
12570 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
12571 | The DWO may have the only definition of the type, though it may not be | |
12572 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
12573 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
12574 | ||
12575 | static void | |
12576 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
12577 | { | |
12578 | struct dwo_unit *dwo_unit; | |
12579 | struct dwo_file *dwo_file; | |
12580 | ||
12581 | gdb_assert (!per_cu->is_debug_types); | |
ed2dc618 | 12582 | gdb_assert (get_dwp_file (per_cu->dwarf2_per_objfile) == NULL); |
89e63ee4 DE |
12583 | gdb_assert (per_cu->cu != NULL); |
12584 | ||
12585 | dwo_unit = per_cu->cu->dwo_unit; | |
12586 | gdb_assert (dwo_unit != NULL); | |
12587 | ||
12588 | dwo_file = dwo_unit->dwo_file; | |
12589 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
12590 | htab_traverse_noresize (dwo_file->tus.get (), queue_and_load_dwo_tu, |
12591 | per_cu); | |
89e63ee4 DE |
12592 | } |
12593 | ||
3019eac3 | 12594 | /* Read in various DIEs. */ |
348e048f | 12595 | |
d389af10 | 12596 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
12597 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
12598 | already referenced by DW_AT_abstract_origin from the children of the | |
12599 | current DIE. */ | |
d389af10 JK |
12600 | |
12601 | static void | |
12602 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
12603 | { | |
12604 | struct die_info *child_die; | |
791afaa2 | 12605 | sect_offset *offsetp; |
d389af10 JK |
12606 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
12607 | struct die_info *origin_die; | |
12608 | /* Iterator of the ORIGIN_DIE children. */ | |
12609 | struct die_info *origin_child_die; | |
d389af10 | 12610 | struct attribute *attr; |
cd02d79d PA |
12611 | struct dwarf2_cu *origin_cu; |
12612 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
12613 | |
12614 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
12615 | if (!attr) | |
12616 | return; | |
12617 | ||
cd02d79d PA |
12618 | /* Note that following die references may follow to a die in a |
12619 | different cu. */ | |
12620 | ||
12621 | origin_cu = cu; | |
12622 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
12623 | ||
12624 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
12625 | symbols in. */ | |
12626 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
12627 | origin_cu->list_in_scope = cu->list_in_scope; | |
12628 | ||
edb3359d DJ |
12629 | if (die->tag != origin_die->tag |
12630 | && !(die->tag == DW_TAG_inlined_subroutine | |
12631 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 12632 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
12633 | sect_offset_str (die->sect_off), |
12634 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 12635 | |
791afaa2 | 12636 | std::vector<sect_offset> offsets; |
d389af10 | 12637 | |
3ea89b92 PMR |
12638 | for (child_die = die->child; |
12639 | child_die && child_die->tag; | |
436c571c | 12640 | child_die = child_die->sibling) |
3ea89b92 PMR |
12641 | { |
12642 | struct die_info *child_origin_die; | |
12643 | struct dwarf2_cu *child_origin_cu; | |
12644 | ||
12645 | /* We are trying to process concrete instance entries: | |
216f72a1 | 12646 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
12647 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
12648 | present in the abstract instance but not referenced in the concrete | |
12649 | one. */ | |
216f72a1 JK |
12650 | if (child_die->tag == DW_TAG_call_site |
12651 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
12652 | continue; |
12653 | ||
c38f313d DJ |
12654 | /* For each CHILD_DIE, find the corresponding child of |
12655 | ORIGIN_DIE. If there is more than one layer of | |
12656 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
12657 | but GCC versions at least through 4.4 generate this (GCC PR | |
12658 | 40573). */ | |
3ea89b92 PMR |
12659 | child_origin_die = child_die; |
12660 | child_origin_cu = cu; | |
c38f313d DJ |
12661 | while (1) |
12662 | { | |
cd02d79d PA |
12663 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
12664 | child_origin_cu); | |
c38f313d DJ |
12665 | if (attr == NULL) |
12666 | break; | |
cd02d79d PA |
12667 | child_origin_die = follow_die_ref (child_origin_die, attr, |
12668 | &child_origin_cu); | |
c38f313d DJ |
12669 | } |
12670 | ||
d389af10 JK |
12671 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
12672 | counterpart may exist. */ | |
c38f313d | 12673 | if (child_origin_die != child_die) |
d389af10 | 12674 | { |
edb3359d DJ |
12675 | if (child_die->tag != child_origin_die->tag |
12676 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
12677 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 12678 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 12679 | "different tags"), |
9d8780f0 SM |
12680 | sect_offset_str (child_die->sect_off), |
12681 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 12682 | if (child_origin_die->parent != origin_die) |
b98664d3 | 12683 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 12684 | "different parents"), |
9d8780f0 SM |
12685 | sect_offset_str (child_die->sect_off), |
12686 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 12687 | else |
791afaa2 | 12688 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 12689 | } |
d389af10 | 12690 | } |
791afaa2 TT |
12691 | std::sort (offsets.begin (), offsets.end ()); |
12692 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
12693 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 12694 | if (offsetp[-1] == *offsetp) |
b98664d3 | 12695 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
12696 | "to DIE %s as their abstract origin"), |
12697 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 12698 | |
791afaa2 | 12699 | offsetp = offsets.data (); |
d389af10 JK |
12700 | origin_child_die = origin_die->child; |
12701 | while (origin_child_die && origin_child_die->tag) | |
12702 | { | |
12703 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 12704 | while (offsetp < offsets_end |
9c541725 | 12705 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 12706 | offsetp++; |
b64f50a1 | 12707 | if (offsetp >= offsets_end |
9c541725 | 12708 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 12709 | { |
adde2bff DE |
12710 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
12711 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
12712 | This can happen with mutually referenced abstract_origins. | |
12713 | PR 16581. */ | |
12714 | if (!origin_child_die->in_process) | |
12715 | process_die (origin_child_die, origin_cu); | |
d389af10 | 12716 | } |
436c571c | 12717 | origin_child_die = origin_child_die->sibling; |
d389af10 | 12718 | } |
cd02d79d | 12719 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
12720 | |
12721 | if (cu != origin_cu) | |
12722 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
12723 | } |
12724 | ||
c906108c | 12725 | static void |
e7c27a73 | 12726 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12727 | { |
518817b3 | 12728 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 12729 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 12730 | struct context_stack *newobj; |
c906108c SS |
12731 | CORE_ADDR lowpc; |
12732 | CORE_ADDR highpc; | |
12733 | struct die_info *child_die; | |
edb3359d | 12734 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 12735 | const char *name; |
e142c38c | 12736 | CORE_ADDR baseaddr; |
801e3a5b | 12737 | struct block *block; |
edb3359d | 12738 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 12739 | std::vector<struct symbol *> template_args; |
34eaf542 | 12740 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
12741 | |
12742 | if (inlined_func) | |
12743 | { | |
12744 | /* If we do not have call site information, we can't show the | |
12745 | caller of this inlined function. That's too confusing, so | |
12746 | only use the scope for local variables. */ | |
12747 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
12748 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
12749 | if (call_line == NULL || call_file == NULL) | |
12750 | { | |
12751 | read_lexical_block_scope (die, cu); | |
12752 | return; | |
12753 | } | |
12754 | } | |
c906108c | 12755 | |
b3b3bada | 12756 | baseaddr = objfile->text_section_offset (); |
e142c38c | 12757 | |
94af9270 | 12758 | name = dwarf2_name (die, cu); |
c906108c | 12759 | |
e8d05480 JB |
12760 | /* Ignore functions with missing or empty names. These are actually |
12761 | illegal according to the DWARF standard. */ | |
12762 | if (name == NULL) | |
12763 | { | |
b98664d3 | 12764 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 12765 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
12766 | return; |
12767 | } | |
12768 | ||
12769 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 12770 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 12771 | <= PC_BOUNDS_INVALID) |
e8d05480 | 12772 | { |
ae4d0c03 PM |
12773 | attr = dwarf2_attr (die, DW_AT_external, cu); |
12774 | if (!attr || !DW_UNSND (attr)) | |
b98664d3 | 12775 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
12776 | "for subprogram DIE at %s"), |
12777 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
12778 | return; |
12779 | } | |
c906108c | 12780 | |
3e29f34a MR |
12781 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
12782 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 12783 | |
34eaf542 TT |
12784 | /* If we have any template arguments, then we must allocate a |
12785 | different sort of symbol. */ | |
436c571c | 12786 | for (child_die = die->child; child_die; child_die = child_die->sibling) |
34eaf542 TT |
12787 | { |
12788 | if (child_die->tag == DW_TAG_template_type_param | |
12789 | || child_die->tag == DW_TAG_template_value_param) | |
12790 | { | |
e623cf5d | 12791 | templ_func = allocate_template_symbol (objfile); |
cf724bc9 | 12792 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
12793 | break; |
12794 | } | |
12795 | } | |
12796 | ||
c24bdb02 | 12797 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
12798 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
12799 | (struct symbol *) templ_func); | |
4c2df51b | 12800 | |
81873cc8 | 12801 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 12802 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
12803 | cu->language); |
12804 | ||
4cecd739 DJ |
12805 | /* If there is a location expression for DW_AT_frame_base, record |
12806 | it. */ | |
e142c38c | 12807 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 12808 | if (attr != nullptr) |
fe978cb0 | 12809 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 12810 | |
63e43d3a PMR |
12811 | /* If there is a location for the static link, record it. */ |
12812 | newobj->static_link = NULL; | |
12813 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 12814 | if (attr != nullptr) |
63e43d3a | 12815 | { |
224c3ddb SM |
12816 | newobj->static_link |
12817 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d | 12818 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
09ba997f | 12819 | cu->per_cu->addr_type ()); |
63e43d3a PMR |
12820 | } |
12821 | ||
c24bdb02 | 12822 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 12823 | |
639d11d3 | 12824 | if (die->child != NULL) |
c906108c | 12825 | { |
639d11d3 | 12826 | child_die = die->child; |
c906108c SS |
12827 | while (child_die && child_die->tag) |
12828 | { | |
34eaf542 TT |
12829 | if (child_die->tag == DW_TAG_template_type_param |
12830 | || child_die->tag == DW_TAG_template_value_param) | |
12831 | { | |
12832 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
12833 | ||
f1078f66 | 12834 | if (arg != NULL) |
2f4732b0 | 12835 | template_args.push_back (arg); |
34eaf542 TT |
12836 | } |
12837 | else | |
12838 | process_die (child_die, cu); | |
436c571c | 12839 | child_die = child_die->sibling; |
c906108c SS |
12840 | } |
12841 | } | |
12842 | ||
d389af10 JK |
12843 | inherit_abstract_dies (die, cu); |
12844 | ||
4a811a97 UW |
12845 | /* If we have a DW_AT_specification, we might need to import using |
12846 | directives from the context of the specification DIE. See the | |
12847 | comment in determine_prefix. */ | |
12848 | if (cu->language == language_cplus | |
12849 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
12850 | { | |
12851 | struct dwarf2_cu *spec_cu = cu; | |
12852 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
12853 | ||
12854 | while (spec_die) | |
12855 | { | |
12856 | child_die = spec_die->child; | |
12857 | while (child_die && child_die->tag) | |
12858 | { | |
12859 | if (child_die->tag == DW_TAG_imported_module) | |
12860 | process_die (child_die, spec_cu); | |
436c571c | 12861 | child_die = child_die->sibling; |
4a811a97 UW |
12862 | } |
12863 | ||
12864 | /* In some cases, GCC generates specification DIEs that | |
12865 | themselves contain DW_AT_specification attributes. */ | |
12866 | spec_die = die_specification (spec_die, &spec_cu); | |
12867 | } | |
12868 | } | |
12869 | ||
c24bdb02 | 12870 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 12871 | /* Make a block for the local symbols within. */ |
c24bdb02 | 12872 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 12873 | cstk.static_link, lowpc, highpc); |
801e3a5b | 12874 | |
df8a16a1 | 12875 | /* For C++, set the block's scope. */ |
45280282 IB |
12876 | if ((cu->language == language_cplus |
12877 | || cu->language == language_fortran | |
c44af4eb TT |
12878 | || cu->language == language_d |
12879 | || cu->language == language_rust) | |
4d4ec4e5 | 12880 | && cu->processing_has_namespace_info) |
195a3f6c TT |
12881 | block_set_scope (block, determine_prefix (die, cu), |
12882 | &objfile->objfile_obstack); | |
df8a16a1 | 12883 | |
801e3a5b JB |
12884 | /* If we have address ranges, record them. */ |
12885 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 12886 | |
a60f3166 | 12887 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 12888 | |
34eaf542 | 12889 | /* Attach template arguments to function. */ |
2f4732b0 | 12890 | if (!template_args.empty ()) |
34eaf542 TT |
12891 | { |
12892 | gdb_assert (templ_func != NULL); | |
12893 | ||
2f4732b0 | 12894 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 12895 | templ_func->template_arguments |
8d749320 SM |
12896 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
12897 | templ_func->n_template_arguments); | |
34eaf542 | 12898 | memcpy (templ_func->template_arguments, |
2f4732b0 | 12899 | template_args.data (), |
34eaf542 | 12900 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
12901 | |
12902 | /* Make sure that the symtab is set on the new symbols. Even | |
12903 | though they don't appear in this symtab directly, other parts | |
12904 | of gdb assume that symbols do, and this is reasonably | |
12905 | true. */ | |
8634679f | 12906 | for (symbol *sym : template_args) |
3e1d3d8c | 12907 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
12908 | } |
12909 | ||
208d8187 JB |
12910 | /* In C++, we can have functions nested inside functions (e.g., when |
12911 | a function declares a class that has methods). This means that | |
12912 | when we finish processing a function scope, we may need to go | |
12913 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
12914 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
12915 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 12916 | |
921e78cf JB |
12917 | /* If we've finished processing a top-level function, subsequent |
12918 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
12919 | if (cu->get_builder ()->outermost_context_p ()) |
12920 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
12921 | } |
12922 | ||
12923 | /* Process all the DIES contained within a lexical block scope. Start | |
12924 | a new scope, process the dies, and then close the scope. */ | |
12925 | ||
12926 | static void | |
e7c27a73 | 12927 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12928 | { |
518817b3 | 12929 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 12930 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
12931 | CORE_ADDR lowpc, highpc; |
12932 | struct die_info *child_die; | |
e142c38c DJ |
12933 | CORE_ADDR baseaddr; |
12934 | ||
b3b3bada | 12935 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
12936 | |
12937 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
12938 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
12939 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 12940 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 12941 | describe ranges. */ |
e385593e JK |
12942 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
12943 | { | |
12944 | case PC_BOUNDS_NOT_PRESENT: | |
12945 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
12946 | there was no wrapping by that DW_TAG_lexical_block. | |
12947 | GCC does no longer produces such DWARF since GCC r224161. */ | |
12948 | for (child_die = die->child; | |
12949 | child_die != NULL && child_die->tag; | |
436c571c | 12950 | child_die = child_die->sibling) |
e385593e JK |
12951 | process_die (child_die, cu); |
12952 | return; | |
12953 | case PC_BOUNDS_INVALID: | |
12954 | return; | |
12955 | } | |
3e29f34a MR |
12956 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
12957 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 12958 | |
c24bdb02 | 12959 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 12960 | if (die->child != NULL) |
c906108c | 12961 | { |
639d11d3 | 12962 | child_die = die->child; |
c906108c SS |
12963 | while (child_die && child_die->tag) |
12964 | { | |
e7c27a73 | 12965 | process_die (child_die, cu); |
436c571c | 12966 | child_die = child_die->sibling; |
c906108c SS |
12967 | } |
12968 | } | |
3ea89b92 | 12969 | inherit_abstract_dies (die, cu); |
c24bdb02 | 12970 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 12971 | |
c24bdb02 KS |
12972 | if (*cu->get_builder ()->get_local_symbols () != NULL |
12973 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 12974 | { |
801e3a5b | 12975 | struct block *block |
c24bdb02 | 12976 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 12977 | cstk.start_addr, highpc); |
801e3a5b JB |
12978 | |
12979 | /* Note that recording ranges after traversing children, as we | |
12980 | do here, means that recording a parent's ranges entails | |
12981 | walking across all its children's ranges as they appear in | |
12982 | the address map, which is quadratic behavior. | |
12983 | ||
12984 | It would be nicer to record the parent's ranges before | |
12985 | traversing its children, simply overriding whatever you find | |
12986 | there. But since we don't even decide whether to create a | |
12987 | block until after we've traversed its children, that's hard | |
12988 | to do. */ | |
12989 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 12990 | } |
c24bdb02 KS |
12991 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
12992 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
12993 | } |
12994 | ||
216f72a1 | 12995 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
12996 | |
12997 | static void | |
12998 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
12999 | { | |
518817b3 | 13000 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
96408a79 SA |
13001 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
13002 | CORE_ADDR pc, baseaddr; | |
13003 | struct attribute *attr; | |
13004 | struct call_site *call_site, call_site_local; | |
13005 | void **slot; | |
13006 | int nparams; | |
13007 | struct die_info *child_die; | |
13008 | ||
b3b3bada | 13009 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13010 | |
216f72a1 JK |
13011 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13012 | if (attr == NULL) | |
13013 | { | |
13014 | /* This was a pre-DWARF-5 GNU extension alias | |
13015 | for DW_AT_call_return_pc. */ | |
13016 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13017 | } | |
96408a79 SA |
13018 | if (!attr) |
13019 | { | |
b98664d3 | 13020 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13021 | "DIE %s [in module %s]"), |
13022 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13023 | return; |
13024 | } | |
cd6c91b4 | 13025 | pc = attr->value_as_address () + baseaddr; |
3e29f34a | 13026 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13027 | |
13028 | if (cu->call_site_htab == NULL) | |
13029 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13030 | NULL, &objfile->objfile_obstack, | |
13031 | hashtab_obstack_allocate, NULL); | |
13032 | call_site_local.pc = pc; | |
13033 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13034 | if (*slot != NULL) | |
13035 | { | |
b98664d3 | 13036 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13037 | "DIE %s [in module %s]"), |
13038 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13039 | objfile_name (objfile)); |
96408a79 SA |
13040 | return; |
13041 | } | |
13042 | ||
13043 | /* Count parameters at the caller. */ | |
13044 | ||
13045 | nparams = 0; | |
13046 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 13047 | child_die = child_die->sibling) |
96408a79 | 13048 | { |
216f72a1 JK |
13049 | if (child_die->tag != DW_TAG_call_site_parameter |
13050 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 | 13051 | { |
b98664d3 | 13052 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13053 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13054 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13055 | objfile_name (objfile)); |
96408a79 SA |
13056 | continue; |
13057 | } | |
13058 | ||
13059 | nparams++; | |
13060 | } | |
13061 | ||
224c3ddb SM |
13062 | call_site |
13063 | = ((struct call_site *) | |
13064 | obstack_alloc (&objfile->objfile_obstack, | |
13065 | sizeof (*call_site) | |
13066 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13067 | *slot = call_site; |
13068 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13069 | call_site->pc = pc; | |
13070 | ||
216f72a1 JK |
13071 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13072 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13073 | { |
13074 | struct die_info *func_die; | |
13075 | ||
13076 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13077 | for (func_die = die->parent; | |
13078 | func_die && func_die->tag != DW_TAG_subprogram | |
13079 | && func_die->tag != DW_TAG_subroutine_type; | |
13080 | func_die = func_die->parent); | |
13081 | ||
216f72a1 JK |
13082 | /* DW_AT_call_all_calls is a superset |
13083 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13084 | if (func_die |
216f72a1 | 13085 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 13086 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 13087 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13088 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13089 | { | |
13090 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13091 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13092 | both the initial caller containing the real return address PC and | |
13093 | the final callee containing the current PC of a chain of tail | |
13094 | calls do not need to have the tail call list complete. But any | |
13095 | function candidate for a virtual tail call frame searched via | |
13096 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13097 | determined unambiguously. */ | |
13098 | } | |
13099 | else | |
13100 | { | |
13101 | struct type *func_type = NULL; | |
13102 | ||
13103 | if (func_die) | |
13104 | func_type = get_die_type (func_die, cu); | |
13105 | if (func_type != NULL) | |
13106 | { | |
13107 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
13108 | ||
13109 | /* Enlist this call site to the function. */ | |
13110 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13111 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13112 | } | |
13113 | else | |
b98664d3 | 13114 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13115 | "DIE %s [in module %s]"), |
13116 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13117 | } |
13118 | } | |
13119 | ||
216f72a1 JK |
13120 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13121 | if (attr == NULL) | |
13122 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
13123 | if (attr == NULL) | |
13124 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 13125 | if (attr == NULL) |
216f72a1 JK |
13126 | { |
13127 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
13128 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13129 | } | |
96408a79 | 13130 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
4fc6c0d5 | 13131 | if (!attr || (attr->form_is_block () && DW_BLOCK (attr)->size == 0)) |
96408a79 | 13132 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 13133 | else if (attr->form_is_block ()) |
96408a79 SA |
13134 | { |
13135 | struct dwarf2_locexpr_baton *dlbaton; | |
13136 | ||
8d749320 | 13137 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
13138 | dlbaton->data = DW_BLOCK (attr)->data; |
13139 | dlbaton->size = DW_BLOCK (attr)->size; | |
13140 | dlbaton->per_cu = cu->per_cu; | |
13141 | ||
13142 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
13143 | } | |
cd6c91b4 | 13144 | else if (attr->form_is_ref ()) |
96408a79 | 13145 | { |
96408a79 SA |
13146 | struct dwarf2_cu *target_cu = cu; |
13147 | struct die_info *target_die; | |
13148 | ||
ac9ec31b | 13149 | target_die = follow_die_ref (die, attr, &target_cu); |
518817b3 | 13150 | gdb_assert (target_cu->per_cu->dwarf2_per_objfile->objfile == objfile); |
96408a79 SA |
13151 | if (die_is_declaration (target_die, target_cu)) |
13152 | { | |
7d45c7c3 | 13153 | const char *target_physname; |
9112db09 JK |
13154 | |
13155 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 13156 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 13157 | if (target_physname == NULL) |
9112db09 | 13158 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 13159 | if (target_physname == NULL) |
b98664d3 | 13160 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13161 | "physname, for referencing DIE %s [in module %s]"), |
13162 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13163 | else |
7d455152 | 13164 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
13165 | } |
13166 | else | |
13167 | { | |
13168 | CORE_ADDR lowpc; | |
13169 | ||
13170 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 13171 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 13172 | <= PC_BOUNDS_INVALID) |
b98664d3 | 13173 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13174 | "low pc, for referencing DIE %s [in module %s]"), |
13175 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13176 | else |
3e29f34a MR |
13177 | { |
13178 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
13179 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
13180 | } | |
96408a79 SA |
13181 | } |
13182 | } | |
13183 | else | |
b98664d3 | 13184 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
13185 | "block nor reference, for DIE %s [in module %s]"), |
13186 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13187 | |
13188 | call_site->per_cu = cu->per_cu; | |
13189 | ||
13190 | for (child_die = die->child; | |
13191 | child_die && child_die->tag; | |
436c571c | 13192 | child_die = child_die->sibling) |
96408a79 | 13193 | { |
96408a79 | 13194 | struct call_site_parameter *parameter; |
1788b2d3 | 13195 | struct attribute *loc, *origin; |
96408a79 | 13196 | |
216f72a1 JK |
13197 | if (child_die->tag != DW_TAG_call_site_parameter |
13198 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
13199 | { |
13200 | /* Already printed the complaint above. */ | |
13201 | continue; | |
13202 | } | |
13203 | ||
13204 | gdb_assert (call_site->parameter_count < nparams); | |
13205 | parameter = &call_site->parameter[call_site->parameter_count]; | |
13206 | ||
1788b2d3 JK |
13207 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
13208 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 13209 | register is contained in DW_AT_call_value. */ |
96408a79 | 13210 | |
24c5c679 | 13211 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
13212 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
13213 | if (origin == NULL) | |
13214 | { | |
13215 | /* This was a pre-DWARF-5 GNU extension alias | |
13216 | for DW_AT_call_parameter. */ | |
13217 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
13218 | } | |
cd6c91b4 | 13219 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 13220 | { |
1788b2d3 | 13221 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 | 13222 | |
0826b30a | 13223 | sect_offset sect_off = origin->get_ref_die_offset (); |
4057dfde | 13224 | if (!cu->header.offset_in_cu_p (sect_off)) |
d76b7dbc JK |
13225 | { |
13226 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
13227 | binding can be done only inside one CU. Such referenced DIE | |
13228 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 13229 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
13230 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13231 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13232 | objfile_name (objfile)); |
d76b7dbc JK |
13233 | continue; |
13234 | } | |
9c541725 PA |
13235 | parameter->u.param_cu_off |
13236 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 13237 | } |
4fc6c0d5 | 13238 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 13239 | { |
b98664d3 | 13240 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
13241 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13242 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13243 | continue; |
13244 | } | |
24c5c679 | 13245 | else |
96408a79 | 13246 | { |
24c5c679 JK |
13247 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
13248 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
13249 | if (parameter->u.dwarf_reg != -1) | |
13250 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
13251 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
13252 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
13253 | ¶meter->u.fb_offset)) | |
13254 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
13255 | else | |
13256 | { | |
b98664d3 | 13257 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 13258 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 13259 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 13260 | "[in module %s]"), |
9d8780f0 | 13261 | sect_offset_str (child_die->sect_off), |
9c541725 | 13262 | objfile_name (objfile)); |
24c5c679 JK |
13263 | continue; |
13264 | } | |
96408a79 SA |
13265 | } |
13266 | ||
216f72a1 JK |
13267 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
13268 | if (attr == NULL) | |
13269 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 13270 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 13271 | { |
b98664d3 | 13272 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
13273 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13274 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13275 | objfile_name (objfile)); |
96408a79 SA |
13276 | continue; |
13277 | } | |
13278 | parameter->value = DW_BLOCK (attr)->data; | |
13279 | parameter->value_size = DW_BLOCK (attr)->size; | |
13280 | ||
13281 | /* Parameters are not pre-cleared by memset above. */ | |
13282 | parameter->data_value = NULL; | |
13283 | parameter->data_value_size = 0; | |
13284 | call_site->parameter_count++; | |
13285 | ||
216f72a1 JK |
13286 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
13287 | if (attr == NULL) | |
13288 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 13289 | if (attr != nullptr) |
96408a79 | 13290 | { |
4fc6c0d5 | 13291 | if (!attr->form_is_block ()) |
b98664d3 | 13292 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
13293 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13294 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13295 | objfile_name (objfile)); |
96408a79 SA |
13296 | else |
13297 | { | |
13298 | parameter->data_value = DW_BLOCK (attr)->data; | |
13299 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
13300 | } | |
13301 | } | |
13302 | } | |
13303 | } | |
13304 | ||
71a3c369 TT |
13305 | /* Helper function for read_variable. If DIE represents a virtual |
13306 | table, then return the type of the concrete object that is | |
13307 | associated with the virtual table. Otherwise, return NULL. */ | |
13308 | ||
13309 | static struct type * | |
13310 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
13311 | { | |
13312 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
13313 | if (attr == NULL) | |
13314 | return NULL; | |
13315 | ||
13316 | /* Find the type DIE. */ | |
13317 | struct die_info *type_die = NULL; | |
13318 | struct dwarf2_cu *type_cu = cu; | |
13319 | ||
cd6c91b4 | 13320 | if (attr->form_is_ref ()) |
71a3c369 TT |
13321 | type_die = follow_die_ref (die, attr, &type_cu); |
13322 | if (type_die == NULL) | |
13323 | return NULL; | |
13324 | ||
13325 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
13326 | return NULL; | |
13327 | return die_containing_type (type_die, type_cu); | |
13328 | } | |
13329 | ||
13330 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
13331 | ||
13332 | static void | |
13333 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
13334 | { | |
13335 | struct rust_vtable_symbol *storage = NULL; | |
13336 | ||
13337 | if (cu->language == language_rust) | |
13338 | { | |
13339 | struct type *containing_type = rust_containing_type (die, cu); | |
13340 | ||
13341 | if (containing_type != NULL) | |
13342 | { | |
518817b3 | 13343 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
71a3c369 | 13344 | |
468c0cbb | 13345 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol (); |
71a3c369 TT |
13346 | initialize_objfile_symbol (storage); |
13347 | storage->concrete_type = containing_type; | |
cf724bc9 | 13348 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
13349 | } |
13350 | } | |
13351 | ||
e4a62c65 TV |
13352 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
13353 | struct attribute *abstract_origin | |
13354 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13355 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
13356 | if (res == NULL && loc && abstract_origin) | |
13357 | { | |
13358 | /* We have a variable without a name, but with a location and an abstract | |
13359 | origin. This may be a concrete instance of an abstract variable | |
13360 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
13361 | later. */ | |
13362 | struct dwarf2_cu *origin_cu = cu; | |
13363 | struct die_info *origin_die | |
13364 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
13365 | dwarf2_per_objfile *dpo = cu->per_cu->dwarf2_per_objfile; | |
3360b6e7 | 13366 | dpo->abstract_to_concrete[origin_die->sect_off].push_back (die->sect_off); |
e4a62c65 | 13367 | } |
71a3c369 TT |
13368 | } |
13369 | ||
43988095 JK |
13370 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
13371 | reading .debug_rnglists. | |
13372 | Callback's type should be: | |
13373 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13374 | Return true if the attributes are present and valid, otherwise, | |
13375 | return false. */ | |
13376 | ||
13377 | template <typename Callback> | |
13378 | static bool | |
13379 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
13380 | Callback &&callback) | |
13381 | { | |
ed2dc618 | 13382 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 13383 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 13384 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43988095 | 13385 | bfd *obfd = objfile->obfd; |
43988095 | 13386 | /* Base address selection entry. */ |
2b24b6e4 | 13387 | gdb::optional<CORE_ADDR> base; |
43988095 | 13388 | const gdb_byte *buffer; |
43988095 JK |
13389 | CORE_ADDR baseaddr; |
13390 | bool overflow = false; | |
13391 | ||
43988095 JK |
13392 | base = cu->base_address; |
13393 | ||
96b79293 | 13394 | dwarf2_per_objfile->rnglists.read (objfile); |
43988095 JK |
13395 | if (offset >= dwarf2_per_objfile->rnglists.size) |
13396 | { | |
b98664d3 | 13397 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
13398 | offset); |
13399 | return false; | |
13400 | } | |
13401 | buffer = dwarf2_per_objfile->rnglists.buffer + offset; | |
13402 | ||
b3b3bada | 13403 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
13404 | |
13405 | while (1) | |
13406 | { | |
7814882a JK |
13407 | /* Initialize it due to a false compiler warning. */ |
13408 | CORE_ADDR range_beginning = 0, range_end = 0; | |
43988095 JK |
13409 | const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer |
13410 | + dwarf2_per_objfile->rnglists.size); | |
13411 | unsigned int bytes_read; | |
13412 | ||
13413 | if (buffer == buf_end) | |
13414 | { | |
13415 | overflow = true; | |
13416 | break; | |
13417 | } | |
13418 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
13419 | switch (rlet) | |
13420 | { | |
13421 | case DW_RLE_end_of_list: | |
13422 | break; | |
13423 | case DW_RLE_base_address: | |
13424 | if (buffer + cu->header.addr_size > buf_end) | |
13425 | { | |
13426 | overflow = true; | |
13427 | break; | |
13428 | } | |
c8a7a66f | 13429 | base = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13430 | buffer += bytes_read; |
13431 | break; | |
13432 | case DW_RLE_start_length: | |
13433 | if (buffer + cu->header.addr_size > buf_end) | |
13434 | { | |
13435 | overflow = true; | |
13436 | break; | |
13437 | } | |
c8a7a66f TT |
13438 | range_beginning = cu->header.read_address (obfd, buffer, |
13439 | &bytes_read); | |
43988095 JK |
13440 | buffer += bytes_read; |
13441 | range_end = (range_beginning | |
13442 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
13443 | buffer += bytes_read; | |
13444 | if (buffer > buf_end) | |
13445 | { | |
13446 | overflow = true; | |
13447 | break; | |
13448 | } | |
13449 | break; | |
13450 | case DW_RLE_offset_pair: | |
13451 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13452 | buffer += bytes_read; | |
13453 | if (buffer > buf_end) | |
13454 | { | |
13455 | overflow = true; | |
13456 | break; | |
13457 | } | |
13458 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13459 | buffer += bytes_read; | |
13460 | if (buffer > buf_end) | |
13461 | { | |
13462 | overflow = true; | |
13463 | break; | |
13464 | } | |
13465 | break; | |
13466 | case DW_RLE_start_end: | |
13467 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
13468 | { | |
13469 | overflow = true; | |
13470 | break; | |
13471 | } | |
c8a7a66f TT |
13472 | range_beginning = cu->header.read_address (obfd, buffer, |
13473 | &bytes_read); | |
43988095 | 13474 | buffer += bytes_read; |
c8a7a66f | 13475 | range_end = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13476 | buffer += bytes_read; |
13477 | break; | |
13478 | default: | |
b98664d3 | 13479 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13480 | return false; |
13481 | } | |
13482 | if (rlet == DW_RLE_end_of_list || overflow) | |
13483 | break; | |
13484 | if (rlet == DW_RLE_base_address) | |
13485 | continue; | |
13486 | ||
2b24b6e4 | 13487 | if (!base.has_value ()) |
43988095 JK |
13488 | { |
13489 | /* We have no valid base address for the ranges | |
13490 | data. */ | |
b98664d3 | 13491 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13492 | return false; |
13493 | } | |
13494 | ||
13495 | if (range_beginning > range_end) | |
13496 | { | |
13497 | /* Inverted range entries are invalid. */ | |
b98664d3 | 13498 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
13499 | return false; |
13500 | } | |
13501 | ||
13502 | /* Empty range entries have no effect. */ | |
13503 | if (range_beginning == range_end) | |
13504 | continue; | |
13505 | ||
2b24b6e4 TT |
13506 | range_beginning += *base; |
13507 | range_end += *base; | |
43988095 JK |
13508 | |
13509 | /* A not-uncommon case of bad debug info. | |
13510 | Don't pollute the addrmap with bad data. */ | |
13511 | if (range_beginning + baseaddr == 0 | |
13512 | && !dwarf2_per_objfile->has_section_at_zero) | |
13513 | { | |
b98664d3 | 13514 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
13515 | " [in module %s]"), objfile_name (objfile)); |
13516 | continue; | |
13517 | } | |
13518 | ||
13519 | callback (range_beginning, range_end); | |
13520 | } | |
13521 | ||
13522 | if (overflow) | |
13523 | { | |
b98664d3 | 13524 | complaint (_("Offset %d is not terminated " |
43988095 JK |
13525 | "for DW_AT_ranges attribute"), |
13526 | offset); | |
13527 | return false; | |
13528 | } | |
13529 | ||
13530 | return true; | |
13531 | } | |
13532 | ||
13533 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
13534 | Callback's type should be: | |
13535 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 13536 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 13537 | |
43988095 | 13538 | template <typename Callback> |
43039443 | 13539 | static int |
5f46c5a5 | 13540 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 13541 | Callback &&callback) |
43039443 | 13542 | { |
ed2dc618 | 13543 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 13544 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 13545 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43039443 JK |
13546 | struct comp_unit_head *cu_header = &cu->header; |
13547 | bfd *obfd = objfile->obfd; | |
13548 | unsigned int addr_size = cu_header->addr_size; | |
13549 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
13550 | /* Base address selection entry. */ | |
2b24b6e4 | 13551 | gdb::optional<CORE_ADDR> base; |
43039443 | 13552 | unsigned int dummy; |
d521ce57 | 13553 | const gdb_byte *buffer; |
ff013f42 | 13554 | CORE_ADDR baseaddr; |
43039443 | 13555 | |
43988095 JK |
13556 | if (cu_header->version >= 5) |
13557 | return dwarf2_rnglists_process (offset, cu, callback); | |
13558 | ||
d00adf39 | 13559 | base = cu->base_address; |
43039443 | 13560 | |
96b79293 | 13561 | dwarf2_per_objfile->ranges.read (objfile); |
dce234bc | 13562 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 | 13563 | { |
b98664d3 | 13564 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
13565 | offset); |
13566 | return 0; | |
13567 | } | |
dce234bc | 13568 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 | 13569 | |
b3b3bada | 13570 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 13571 | |
43039443 JK |
13572 | while (1) |
13573 | { | |
13574 | CORE_ADDR range_beginning, range_end; | |
13575 | ||
c8a7a66f | 13576 | range_beginning = cu->header.read_address (obfd, buffer, &dummy); |
43039443 | 13577 | buffer += addr_size; |
c8a7a66f | 13578 | range_end = cu->header.read_address (obfd, buffer, &dummy); |
43039443 JK |
13579 | buffer += addr_size; |
13580 | offset += 2 * addr_size; | |
13581 | ||
13582 | /* An end of list marker is a pair of zero addresses. */ | |
13583 | if (range_beginning == 0 && range_end == 0) | |
13584 | /* Found the end of list entry. */ | |
13585 | break; | |
13586 | ||
13587 | /* Each base address selection entry is a pair of 2 values. | |
13588 | The first is the largest possible address, the second is | |
13589 | the base address. Check for a base address here. */ | |
13590 | if ((range_beginning & mask) == mask) | |
13591 | { | |
28d2bfb9 AB |
13592 | /* If we found the largest possible address, then we already |
13593 | have the base address in range_end. */ | |
13594 | base = range_end; | |
43039443 JK |
13595 | continue; |
13596 | } | |
13597 | ||
2b24b6e4 | 13598 | if (!base.has_value ()) |
43039443 JK |
13599 | { |
13600 | /* We have no valid base address for the ranges | |
13601 | data. */ | |
b98664d3 | 13602 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
13603 | return 0; |
13604 | } | |
13605 | ||
9277c30c UW |
13606 | if (range_beginning > range_end) |
13607 | { | |
13608 | /* Inverted range entries are invalid. */ | |
b98664d3 | 13609 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
13610 | return 0; |
13611 | } | |
13612 | ||
13613 | /* Empty range entries have no effect. */ | |
13614 | if (range_beginning == range_end) | |
13615 | continue; | |
13616 | ||
2b24b6e4 TT |
13617 | range_beginning += *base; |
13618 | range_end += *base; | |
43039443 | 13619 | |
01093045 DE |
13620 | /* A not-uncommon case of bad debug info. |
13621 | Don't pollute the addrmap with bad data. */ | |
13622 | if (range_beginning + baseaddr == 0 | |
13623 | && !dwarf2_per_objfile->has_section_at_zero) | |
13624 | { | |
b98664d3 | 13625 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 13626 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
13627 | continue; |
13628 | } | |
13629 | ||
5f46c5a5 JK |
13630 | callback (range_beginning, range_end); |
13631 | } | |
13632 | ||
13633 | return 1; | |
13634 | } | |
13635 | ||
13636 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
13637 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
13638 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
13639 | ||
13640 | static int | |
13641 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
13642 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
891813be | 13643 | dwarf2_psymtab *ranges_pst) |
5f46c5a5 | 13644 | { |
518817b3 | 13645 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5f46c5a5 | 13646 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
b3b3bada | 13647 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
13648 | int low_set = 0; |
13649 | CORE_ADDR low = 0; | |
13650 | CORE_ADDR high = 0; | |
13651 | int retval; | |
13652 | ||
13653 | retval = dwarf2_ranges_process (offset, cu, | |
13654 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13655 | { | |
9277c30c | 13656 | if (ranges_pst != NULL) |
3e29f34a MR |
13657 | { |
13658 | CORE_ADDR lowpc; | |
13659 | CORE_ADDR highpc; | |
13660 | ||
79748972 TT |
13661 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
13662 | range_beginning + baseaddr) | |
13663 | - baseaddr); | |
13664 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
13665 | range_end + baseaddr) | |
13666 | - baseaddr); | |
d320c2b5 TT |
13667 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
13668 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 13669 | } |
ff013f42 | 13670 | |
43039443 JK |
13671 | /* FIXME: This is recording everything as a low-high |
13672 | segment of consecutive addresses. We should have a | |
13673 | data structure for discontiguous block ranges | |
13674 | instead. */ | |
13675 | if (! low_set) | |
13676 | { | |
13677 | low = range_beginning; | |
13678 | high = range_end; | |
13679 | low_set = 1; | |
13680 | } | |
13681 | else | |
13682 | { | |
13683 | if (range_beginning < low) | |
13684 | low = range_beginning; | |
13685 | if (range_end > high) | |
13686 | high = range_end; | |
13687 | } | |
5f46c5a5 JK |
13688 | }); |
13689 | if (!retval) | |
13690 | return 0; | |
43039443 JK |
13691 | |
13692 | if (! low_set) | |
13693 | /* If the first entry is an end-of-list marker, the range | |
13694 | describes an empty scope, i.e. no instructions. */ | |
13695 | return 0; | |
13696 | ||
13697 | if (low_return) | |
13698 | *low_return = low; | |
13699 | if (high_return) | |
13700 | *high_return = high; | |
13701 | return 1; | |
13702 | } | |
13703 | ||
3a2b436a JK |
13704 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
13705 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 13706 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 13707 | |
3a2b436a | 13708 | static enum pc_bounds_kind |
af34e669 | 13709 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 13710 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 13711 | dwarf2_psymtab *pst) |
c906108c | 13712 | { |
518817b3 SM |
13713 | struct dwarf2_per_objfile *dwarf2_per_objfile |
13714 | = cu->per_cu->dwarf2_per_objfile; | |
c906108c | 13715 | struct attribute *attr; |
91da1414 | 13716 | struct attribute *attr_high; |
af34e669 DJ |
13717 | CORE_ADDR low = 0; |
13718 | CORE_ADDR high = 0; | |
e385593e | 13719 | enum pc_bounds_kind ret; |
c906108c | 13720 | |
91da1414 MW |
13721 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
13722 | if (attr_high) | |
af34e669 | 13723 | { |
e142c38c | 13724 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 13725 | if (attr != nullptr) |
91da1414 | 13726 | { |
cd6c91b4 TT |
13727 | low = attr->value_as_address (); |
13728 | high = attr_high->value_as_address (); | |
13729 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) | |
31aa7e4e | 13730 | high += low; |
91da1414 | 13731 | } |
af34e669 DJ |
13732 | else |
13733 | /* Found high w/o low attribute. */ | |
e385593e | 13734 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
13735 | |
13736 | /* Found consecutive range of addresses. */ | |
3a2b436a | 13737 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 13738 | } |
c906108c | 13739 | else |
af34e669 | 13740 | { |
e142c38c | 13741 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
13742 | if (attr != NULL) |
13743 | { | |
18a8505e | 13744 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
13745 | We take advantage of the fact that DW_AT_ranges does not appear |
13746 | in DW_TAG_compile_unit of DWO files. */ | |
13747 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
13748 | unsigned int ranges_offset = (DW_UNSND (attr) | |
13749 | + (need_ranges_base | |
13750 | ? cu->ranges_base | |
13751 | : 0)); | |
2e3cf129 | 13752 | |
af34e669 | 13753 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 13754 | .debug_ranges section. */ |
2e3cf129 | 13755 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 13756 | return PC_BOUNDS_INVALID; |
43039443 | 13757 | /* Found discontinuous range of addresses. */ |
3a2b436a | 13758 | ret = PC_BOUNDS_RANGES; |
af34e669 | 13759 | } |
e385593e JK |
13760 | else |
13761 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 13762 | } |
c906108c | 13763 | |
48fbe735 | 13764 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 13765 | if (high <= low) |
e385593e | 13766 | return PC_BOUNDS_INVALID; |
c906108c SS |
13767 | |
13768 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
13769 | eliminate duplicate copies of functions and vtables and such. | |
13770 | The linker will arbitrarily choose one and discard the others. | |
13771 | The AT_*_pc values for such functions refer to local labels in | |
13772 | these sections. If the section from that file was discarded, the | |
13773 | labels are not in the output, so the relocs get a value of 0. | |
13774 | If this is a discarded function, mark the pc bounds as invalid, | |
13775 | so that GDB will ignore it. */ | |
72dca2f5 | 13776 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
e385593e | 13777 | return PC_BOUNDS_INVALID; |
c906108c SS |
13778 | |
13779 | *lowpc = low; | |
96408a79 SA |
13780 | if (highpc) |
13781 | *highpc = high; | |
af34e669 | 13782 | return ret; |
c906108c SS |
13783 | } |
13784 | ||
b084d499 JB |
13785 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
13786 | its low and high PC addresses. Do nothing if these addresses could not | |
13787 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
13788 | and HIGHPC to the high address if greater than HIGHPC. */ | |
13789 | ||
13790 | static void | |
13791 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
13792 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
13793 | struct dwarf2_cu *cu) | |
13794 | { | |
13795 | CORE_ADDR low, high; | |
13796 | struct die_info *child = die->child; | |
13797 | ||
e385593e | 13798 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 13799 | { |
325fac50 PA |
13800 | *lowpc = std::min (*lowpc, low); |
13801 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
13802 | } |
13803 | ||
13804 | /* If the language does not allow nested subprograms (either inside | |
13805 | subprograms or lexical blocks), we're done. */ | |
13806 | if (cu->language != language_ada) | |
13807 | return; | |
6e70227d | 13808 | |
b084d499 JB |
13809 | /* Check all the children of the given DIE. If it contains nested |
13810 | subprograms, then check their pc bounds. Likewise, we need to | |
13811 | check lexical blocks as well, as they may also contain subprogram | |
13812 | definitions. */ | |
13813 | while (child && child->tag) | |
13814 | { | |
13815 | if (child->tag == DW_TAG_subprogram | |
13816 | || child->tag == DW_TAG_lexical_block) | |
13817 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
436c571c | 13818 | child = child->sibling; |
b084d499 JB |
13819 | } |
13820 | } | |
13821 | ||
fae299cd DC |
13822 | /* Get the low and high pc's represented by the scope DIE, and store |
13823 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
13824 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
13825 | ||
13826 | static void | |
13827 | get_scope_pc_bounds (struct die_info *die, | |
13828 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
13829 | struct dwarf2_cu *cu) | |
13830 | { | |
13831 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
13832 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
13833 | CORE_ADDR current_low, current_high; | |
13834 | ||
3a2b436a | 13835 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 13836 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
13837 | { |
13838 | best_low = current_low; | |
13839 | best_high = current_high; | |
13840 | } | |
13841 | else | |
13842 | { | |
13843 | struct die_info *child = die->child; | |
13844 | ||
13845 | while (child && child->tag) | |
13846 | { | |
13847 | switch (child->tag) { | |
13848 | case DW_TAG_subprogram: | |
b084d499 | 13849 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
13850 | break; |
13851 | case DW_TAG_namespace: | |
f55ee35c | 13852 | case DW_TAG_module: |
fae299cd DC |
13853 | /* FIXME: carlton/2004-01-16: Should we do this for |
13854 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
13855 | that current GCC's always emit the DIEs corresponding | |
13856 | to definitions of methods of classes as children of a | |
13857 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
13858 | the DIEs giving the declarations, which could be | |
13859 | anywhere). But I don't see any reason why the | |
13860 | standards says that they have to be there. */ | |
13861 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
13862 | ||
13863 | if (current_low != ((CORE_ADDR) -1)) | |
13864 | { | |
325fac50 PA |
13865 | best_low = std::min (best_low, current_low); |
13866 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
13867 | } |
13868 | break; | |
13869 | default: | |
0963b4bd | 13870 | /* Ignore. */ |
fae299cd DC |
13871 | break; |
13872 | } | |
13873 | ||
436c571c | 13874 | child = child->sibling; |
fae299cd DC |
13875 | } |
13876 | } | |
13877 | ||
13878 | *lowpc = best_low; | |
13879 | *highpc = best_high; | |
13880 | } | |
13881 | ||
801e3a5b JB |
13882 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
13883 | in DIE. */ | |
380bca97 | 13884 | |
801e3a5b JB |
13885 | static void |
13886 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
13887 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
13888 | { | |
518817b3 | 13889 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13890 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 13891 | struct attribute *attr; |
91da1414 | 13892 | struct attribute *attr_high; |
801e3a5b | 13893 | |
91da1414 MW |
13894 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
13895 | if (attr_high) | |
801e3a5b | 13896 | { |
801e3a5b | 13897 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 13898 | if (attr != nullptr) |
801e3a5b | 13899 | { |
cd6c91b4 TT |
13900 | CORE_ADDR low = attr->value_as_address (); |
13901 | CORE_ADDR high = attr_high->value_as_address (); | |
31aa7e4e | 13902 | |
cd6c91b4 | 13903 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 13904 | high += low; |
9a619af0 | 13905 | |
3e29f34a MR |
13906 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
13907 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 13908 | cu->get_builder ()->record_block_range (block, low, high - 1); |
801e3a5b JB |
13909 | } |
13910 | } | |
13911 | ||
13912 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
435d3d88 | 13913 | if (attr != nullptr) |
801e3a5b | 13914 | { |
18a8505e | 13915 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
13916 | We take advantage of the fact that DW_AT_ranges does not appear |
13917 | in DW_TAG_compile_unit of DWO files. */ | |
13918 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
13919 | |
13920 | /* The value of the DW_AT_ranges attribute is the offset of the | |
13921 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
13922 | unsigned long offset = (DW_UNSND (attr) |
13923 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 13924 | |
2d5f09ec | 13925 | std::vector<blockrange> blockvec; |
5f46c5a5 JK |
13926 | dwarf2_ranges_process (offset, cu, |
13927 | [&] (CORE_ADDR start, CORE_ADDR end) | |
13928 | { | |
58fdfd2c JK |
13929 | start += baseaddr; |
13930 | end += baseaddr; | |
5f46c5a5 JK |
13931 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
13932 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 13933 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 13934 | blockvec.emplace_back (start, end); |
5f46c5a5 | 13935 | }); |
2d5f09ec KB |
13936 | |
13937 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
13938 | } |
13939 | } | |
13940 | ||
685b1105 JK |
13941 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
13942 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 13943 | |
685b1105 JK |
13944 | static void |
13945 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 13946 | { |
38360086 | 13947 | int major, minor; |
60d5a603 JK |
13948 | |
13949 | if (cu->producer == NULL) | |
13950 | { | |
13951 | /* For unknown compilers expect their behavior is DWARF version | |
13952 | compliant. | |
13953 | ||
13954 | GCC started to support .debug_types sections by -gdwarf-4 since | |
13955 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
13956 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
13957 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
13958 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 13959 | } |
b1ffba5a | 13960 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 13961 | { |
38360086 MW |
13962 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
13963 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 13964 | } |
5230b05a | 13965 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
13966 | { |
13967 | cu->producer_is_icc = true; | |
13968 | cu->producer_is_icc_lt_14 = major < 14; | |
13969 | } | |
c258c396 JD |
13970 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
13971 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
13972 | else |
13973 | { | |
13974 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
13975 | compliant. */ | |
60d5a603 JK |
13976 | } |
13977 | ||
9068261f | 13978 | cu->checked_producer = true; |
685b1105 | 13979 | } |
ba919b58 | 13980 | |
685b1105 JK |
13981 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
13982 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
13983 | during 4.6.0 experimental. */ | |
13984 | ||
9068261f | 13985 | static bool |
685b1105 JK |
13986 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
13987 | { | |
13988 | if (!cu->checked_producer) | |
13989 | check_producer (cu); | |
13990 | ||
13991 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
13992 | } |
13993 | ||
c258c396 JD |
13994 | |
13995 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
13996 | with incorrect is_stmt attributes. */ | |
13997 | ||
13998 | static bool | |
13999 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14000 | { | |
14001 | if (!cu->checked_producer) | |
14002 | check_producer (cu); | |
14003 | ||
14004 | return cu->producer_is_codewarrior; | |
14005 | } | |
14006 | ||
405feb71 | 14007 | /* Return the default accessibility type if it is not overridden by |
60d5a603 JK |
14008 | DW_AT_accessibility. */ |
14009 | ||
14010 | static enum dwarf_access_attribute | |
14011 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14012 | { | |
14013 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14014 | { | |
14015 | /* The default DWARF 2 accessibility for members is public, the default | |
14016 | accessibility for inheritance is private. */ | |
14017 | ||
14018 | if (die->tag != DW_TAG_inheritance) | |
14019 | return DW_ACCESS_public; | |
14020 | else | |
14021 | return DW_ACCESS_private; | |
14022 | } | |
14023 | else | |
14024 | { | |
14025 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14026 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14027 | depends on the container kind. */ | |
14028 | ||
14029 | if (die->parent->tag == DW_TAG_class_type) | |
14030 | return DW_ACCESS_private; | |
14031 | else | |
14032 | return DW_ACCESS_public; | |
14033 | } | |
14034 | } | |
14035 | ||
74ac6d43 TT |
14036 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14037 | offset. If the attribute was not found return 0, otherwise return | |
14038 | 1. If it was found but could not properly be handled, set *OFFSET | |
14039 | to 0. */ | |
14040 | ||
14041 | static int | |
14042 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14043 | LONGEST *offset) | |
14044 | { | |
14045 | struct attribute *attr; | |
14046 | ||
14047 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14048 | if (attr != NULL) | |
14049 | { | |
14050 | *offset = 0; | |
14051 | ||
14052 | /* Note that we do not check for a section offset first here. | |
14053 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14054 | so if we see it, we can assume that a constant form is really | |
14055 | a constant and not a section offset. */ | |
cd6c91b4 | 14056 | if (attr->form_is_constant ()) |
0826b30a | 14057 | *offset = attr->constant_value (0); |
cd6c91b4 | 14058 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 14059 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 14060 | else if (attr->form_is_block ()) |
74ac6d43 TT |
14061 | *offset = decode_locdesc (DW_BLOCK (attr), cu); |
14062 | else | |
14063 | dwarf2_complex_location_expr_complaint (); | |
14064 | ||
14065 | return 1; | |
14066 | } | |
14067 | ||
14068 | return 0; | |
14069 | } | |
14070 | ||
c906108c SS |
14071 | /* Add an aggregate field to the field list. */ |
14072 | ||
14073 | static void | |
107d2387 | 14074 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14075 | struct dwarf2_cu *cu) |
6e70227d | 14076 | { |
518817b3 | 14077 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5e2b427d | 14078 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
14079 | struct nextfield *new_field; |
14080 | struct attribute *attr; | |
14081 | struct field *fp; | |
15d034d0 | 14082 | const char *fieldname = ""; |
c906108c | 14083 | |
7d0ccb61 DJ |
14084 | if (die->tag == DW_TAG_inheritance) |
14085 | { | |
be2daae6 TT |
14086 | fip->baseclasses.emplace_back (); |
14087 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
14088 | } |
14089 | else | |
14090 | { | |
be2daae6 TT |
14091 | fip->fields.emplace_back (); |
14092 | new_field = &fip->fields.back (); | |
7d0ccb61 | 14093 | } |
be2daae6 | 14094 | |
e142c38c | 14095 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 14096 | if (attr != nullptr) |
c906108c | 14097 | new_field->accessibility = DW_UNSND (attr); |
60d5a603 JK |
14098 | else |
14099 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
14100 | if (new_field->accessibility != DW_ACCESS_public) |
14101 | fip->non_public_fields = 1; | |
60d5a603 | 14102 | |
e142c38c | 14103 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 14104 | if (attr != nullptr) |
c906108c | 14105 | new_field->virtuality = DW_UNSND (attr); |
60d5a603 JK |
14106 | else |
14107 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
14108 | |
14109 | fp = &new_field->field; | |
a9a9bd0f | 14110 | |
e142c38c | 14111 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 14112 | { |
74ac6d43 TT |
14113 | LONGEST offset; |
14114 | ||
a9a9bd0f | 14115 | /* Data member other than a C++ static data member. */ |
6e70227d | 14116 | |
c906108c | 14117 | /* Get type of field. */ |
e7c27a73 | 14118 | fp->type = die_type (die, cu); |
c906108c | 14119 | |
d6a843b5 | 14120 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 14121 | |
c906108c | 14122 | /* Get bit size of field (zero if none). */ |
e142c38c | 14123 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 14124 | if (attr != nullptr) |
c906108c SS |
14125 | { |
14126 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
14127 | } | |
14128 | else | |
14129 | { | |
14130 | FIELD_BITSIZE (*fp) = 0; | |
14131 | } | |
14132 | ||
14133 | /* Get bit offset of field. */ | |
74ac6d43 TT |
14134 | if (handle_data_member_location (die, cu, &offset)) |
14135 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 14136 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
435d3d88 | 14137 | if (attr != nullptr) |
c906108c | 14138 | { |
d5a22e77 | 14139 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
14140 | { |
14141 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
14142 | additional bit offset from the MSB of the containing |
14143 | anonymous object to the MSB of the field. We don't | |
14144 | have to do anything special since we don't need to | |
14145 | know the size of the anonymous object. */ | |
f41f5e61 | 14146 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
14147 | } |
14148 | else | |
14149 | { | |
14150 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
14151 | MSB of the anonymous object, subtract off the number of |
14152 | bits from the MSB of the field to the MSB of the | |
14153 | object, and then subtract off the number of bits of | |
14154 | the field itself. The result is the bit offset of | |
14155 | the LSB of the field. */ | |
c906108c SS |
14156 | int anonymous_size; |
14157 | int bit_offset = DW_UNSND (attr); | |
14158 | ||
e142c38c | 14159 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 14160 | if (attr != nullptr) |
c906108c SS |
14161 | { |
14162 | /* The size of the anonymous object containing | |
14163 | the bit field is explicit, so use the | |
14164 | indicated size (in bytes). */ | |
14165 | anonymous_size = DW_UNSND (attr); | |
14166 | } | |
14167 | else | |
14168 | { | |
14169 | /* The size of the anonymous object containing | |
14170 | the bit field must be inferred from the type | |
14171 | attribute of the data member containing the | |
14172 | bit field. */ | |
14173 | anonymous_size = TYPE_LENGTH (fp->type); | |
14174 | } | |
f41f5e61 PA |
14175 | SET_FIELD_BITPOS (*fp, |
14176 | (FIELD_BITPOS (*fp) | |
14177 | + anonymous_size * bits_per_byte | |
14178 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
14179 | } |
14180 | } | |
da5b30da AA |
14181 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
14182 | if (attr != NULL) | |
14183 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
0826b30a | 14184 | + attr->constant_value (0))); |
c906108c SS |
14185 | |
14186 | /* Get name of field. */ | |
39cbfefa DJ |
14187 | fieldname = dwarf2_name (die, cu); |
14188 | if (fieldname == NULL) | |
14189 | fieldname = ""; | |
d8151005 DJ |
14190 | |
14191 | /* The name is already allocated along with this objfile, so we don't | |
14192 | need to duplicate it for the type. */ | |
14193 | fp->name = fieldname; | |
c906108c SS |
14194 | |
14195 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 14196 | pointer or virtual base class pointer) to private. */ |
e142c38c | 14197 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 14198 | { |
d48cc9dd | 14199 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
14200 | new_field->accessibility = DW_ACCESS_private; |
14201 | fip->non_public_fields = 1; | |
14202 | } | |
14203 | } | |
a9a9bd0f | 14204 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 14205 | { |
a9a9bd0f DC |
14206 | /* C++ static member. */ |
14207 | ||
14208 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
14209 | is a declaration, but all versions of G++ as of this writing | |
14210 | (so through at least 3.2.1) incorrectly generate | |
14211 | DW_TAG_variable tags. */ | |
6e70227d | 14212 | |
ff355380 | 14213 | const char *physname; |
c906108c | 14214 | |
a9a9bd0f | 14215 | /* Get name of field. */ |
39cbfefa DJ |
14216 | fieldname = dwarf2_name (die, cu); |
14217 | if (fieldname == NULL) | |
c906108c SS |
14218 | return; |
14219 | ||
254e6b9e | 14220 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
14221 | if (attr |
14222 | /* Only create a symbol if this is an external value. | |
14223 | new_symbol checks this and puts the value in the global symbol | |
14224 | table, which we want. If it is not external, new_symbol | |
14225 | will try to put the value in cu->list_in_scope which is wrong. */ | |
14226 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
14227 | { |
14228 | /* A static const member, not much different than an enum as far as | |
14229 | we're concerned, except that we can support more types. */ | |
14230 | new_symbol (die, NULL, cu); | |
14231 | } | |
14232 | ||
2df3850c | 14233 | /* Get physical name. */ |
ff355380 | 14234 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 14235 | |
d8151005 DJ |
14236 | /* The name is already allocated along with this objfile, so we don't |
14237 | need to duplicate it for the type. */ | |
14238 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 14239 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 14240 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
14241 | } |
14242 | else if (die->tag == DW_TAG_inheritance) | |
14243 | { | |
74ac6d43 | 14244 | LONGEST offset; |
d4b96c9a | 14245 | |
74ac6d43 TT |
14246 | /* C++ base class field. */ |
14247 | if (handle_data_member_location (die, cu, &offset)) | |
14248 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 14249 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 14250 | FIELD_TYPE (*fp) = die_type (die, cu); |
a737d952 | 14251 | FIELD_NAME (*fp) = TYPE_NAME (fp->type); |
c906108c | 14252 | } |
2ddeaf8a TT |
14253 | else if (die->tag == DW_TAG_variant_part) |
14254 | { | |
14255 | /* process_structure_scope will treat this DIE as a union. */ | |
14256 | process_structure_scope (die, cu); | |
14257 | ||
14258 | /* The variant part is relative to the start of the enclosing | |
14259 | structure. */ | |
14260 | SET_FIELD_BITPOS (*fp, 0); | |
14261 | fp->type = get_die_type (die, cu); | |
14262 | fp->artificial = 1; | |
14263 | fp->name = "<<variant>>"; | |
c8c81635 TT |
14264 | |
14265 | /* Normally a DW_TAG_variant_part won't have a size, but our | |
14266 | representation requires one, so set it to the maximum of the | |
489dbda6 TT |
14267 | child sizes, being sure to account for the offset at which |
14268 | each child is seen. */ | |
c8c81635 TT |
14269 | if (TYPE_LENGTH (fp->type) == 0) |
14270 | { | |
14271 | unsigned max = 0; | |
14272 | for (int i = 0; i < TYPE_NFIELDS (fp->type); ++i) | |
489dbda6 TT |
14273 | { |
14274 | unsigned len = ((TYPE_FIELD_BITPOS (fp->type, i) + 7) / 8 | |
14275 | + TYPE_LENGTH (TYPE_FIELD_TYPE (fp->type, i))); | |
14276 | if (len > max) | |
14277 | max = len; | |
14278 | } | |
c8c81635 TT |
14279 | TYPE_LENGTH (fp->type) = max; |
14280 | } | |
2ddeaf8a TT |
14281 | } |
14282 | else | |
14283 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
14284 | } |
14285 | ||
883fd55a KS |
14286 | /* Can the type given by DIE define another type? */ |
14287 | ||
14288 | static bool | |
14289 | type_can_define_types (const struct die_info *die) | |
14290 | { | |
14291 | switch (die->tag) | |
14292 | { | |
14293 | case DW_TAG_typedef: | |
14294 | case DW_TAG_class_type: | |
14295 | case DW_TAG_structure_type: | |
14296 | case DW_TAG_union_type: | |
14297 | case DW_TAG_enumeration_type: | |
14298 | return true; | |
14299 | ||
14300 | default: | |
14301 | return false; | |
14302 | } | |
14303 | } | |
14304 | ||
14305 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
14306 | |
14307 | static void | |
883fd55a KS |
14308 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
14309 | struct dwarf2_cu *cu) | |
6e70227d | 14310 | { |
be2daae6 TT |
14311 | struct decl_field fp; |
14312 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 14313 | |
883fd55a | 14314 | gdb_assert (type_can_define_types (die)); |
98751a41 | 14315 | |
883fd55a | 14316 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
14317 | fp.name = dwarf2_name (die, cu); |
14318 | fp.type = read_type_die (die, cu); | |
98751a41 | 14319 | |
c191a687 KS |
14320 | /* Save accessibility. */ |
14321 | enum dwarf_access_attribute accessibility; | |
14322 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
14323 | if (attr != NULL) | |
14324 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
14325 | else | |
14326 | accessibility = dwarf2_default_access_attribute (die, cu); | |
14327 | switch (accessibility) | |
14328 | { | |
14329 | case DW_ACCESS_public: | |
14330 | /* The assumed value if neither private nor protected. */ | |
14331 | break; | |
14332 | case DW_ACCESS_private: | |
be2daae6 | 14333 | fp.is_private = 1; |
c191a687 KS |
14334 | break; |
14335 | case DW_ACCESS_protected: | |
be2daae6 | 14336 | fp.is_protected = 1; |
c191a687 KS |
14337 | break; |
14338 | default: | |
b98664d3 | 14339 | complaint (_("Unhandled DW_AT_accessibility value (%x)"), accessibility); |
c191a687 KS |
14340 | } |
14341 | ||
883fd55a | 14342 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 14343 | fip->typedef_field_list.push_back (fp); |
883fd55a | 14344 | else |
be2daae6 | 14345 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
14346 | } |
14347 | ||
c906108c SS |
14348 | /* Create the vector of fields, and attach it to the type. */ |
14349 | ||
14350 | static void | |
fba45db2 | 14351 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 14352 | struct dwarf2_cu *cu) |
c906108c | 14353 | { |
317f7127 | 14354 | int nfields = fip->nfields (); |
c906108c SS |
14355 | |
14356 | /* Record the field count, allocate space for the array of fields, | |
14357 | and create blank accessibility bitfields if necessary. */ | |
14358 | TYPE_NFIELDS (type) = nfields; | |
14359 | TYPE_FIELDS (type) = (struct field *) | |
be2daae6 | 14360 | TYPE_ZALLOC (type, sizeof (struct field) * nfields); |
c906108c | 14361 | |
b4ba55a1 | 14362 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
14363 | { |
14364 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
14365 | ||
14366 | TYPE_FIELD_PRIVATE_BITS (type) = | |
14367 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14368 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
14369 | ||
14370 | TYPE_FIELD_PROTECTED_BITS (type) = | |
14371 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14372 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
14373 | ||
774b6a14 TT |
14374 | TYPE_FIELD_IGNORE_BITS (type) = |
14375 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14376 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
14377 | } |
14378 | ||
14379 | /* If the type has baseclasses, allocate and clear a bit vector for | |
14380 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 14381 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 14382 | { |
be2daae6 | 14383 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 14384 | unsigned char *pointer; |
c906108c SS |
14385 | |
14386 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 14387 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 14388 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
14389 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
14390 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
14391 | } |
14392 | ||
2ddeaf8a TT |
14393 | if (TYPE_FLAG_DISCRIMINATED_UNION (type)) |
14394 | { | |
14395 | struct discriminant_info *di = alloc_discriminant_info (type, -1, -1); | |
14396 | ||
be2daae6 | 14397 | for (int index = 0; index < nfields; ++index) |
2ddeaf8a | 14398 | { |
be2daae6 TT |
14399 | struct nextfield &field = fip->fields[index]; |
14400 | ||
14401 | if (field.variant.is_discriminant) | |
2ddeaf8a | 14402 | di->discriminant_index = index; |
be2daae6 | 14403 | else if (field.variant.default_branch) |
2ddeaf8a TT |
14404 | di->default_index = index; |
14405 | else | |
be2daae6 | 14406 | di->discriminants[index] = field.variant.discriminant_value; |
2ddeaf8a TT |
14407 | } |
14408 | } | |
14409 | ||
be2daae6 TT |
14410 | /* Copy the saved-up fields into the field vector. */ |
14411 | for (int i = 0; i < nfields; ++i) | |
c906108c | 14412 | { |
be2daae6 TT |
14413 | struct nextfield &field |
14414 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
14415 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 14416 | |
be2daae6 TT |
14417 | TYPE_FIELD (type, i) = field.field; |
14418 | switch (field.accessibility) | |
c906108c | 14419 | { |
c5aa993b | 14420 | case DW_ACCESS_private: |
b4ba55a1 | 14421 | if (cu->language != language_ada) |
be2daae6 | 14422 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 14423 | break; |
c906108c | 14424 | |
c5aa993b | 14425 | case DW_ACCESS_protected: |
b4ba55a1 | 14426 | if (cu->language != language_ada) |
be2daae6 | 14427 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 14428 | break; |
c906108c | 14429 | |
c5aa993b JM |
14430 | case DW_ACCESS_public: |
14431 | break; | |
c906108c | 14432 | |
c5aa993b JM |
14433 | default: |
14434 | /* Unknown accessibility. Complain and treat it as public. */ | |
14435 | { | |
b98664d3 | 14436 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 14437 | field.accessibility); |
c5aa993b JM |
14438 | } |
14439 | break; | |
c906108c | 14440 | } |
be2daae6 | 14441 | if (i < fip->baseclasses.size ()) |
c906108c | 14442 | { |
be2daae6 | 14443 | switch (field.virtuality) |
c906108c | 14444 | { |
c5aa993b JM |
14445 | case DW_VIRTUALITY_virtual: |
14446 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 14447 | if (cu->language == language_ada) |
a73c6dcd | 14448 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 14449 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 14450 | break; |
c906108c SS |
14451 | } |
14452 | } | |
c906108c SS |
14453 | } |
14454 | } | |
14455 | ||
7d27a96d TT |
14456 | /* Return true if this member function is a constructor, false |
14457 | otherwise. */ | |
14458 | ||
14459 | static int | |
14460 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
14461 | { | |
14462 | const char *fieldname; | |
fe978cb0 | 14463 | const char *type_name; |
7d27a96d TT |
14464 | int len; |
14465 | ||
14466 | if (die->parent == NULL) | |
14467 | return 0; | |
14468 | ||
14469 | if (die->parent->tag != DW_TAG_structure_type | |
14470 | && die->parent->tag != DW_TAG_union_type | |
14471 | && die->parent->tag != DW_TAG_class_type) | |
14472 | return 0; | |
14473 | ||
14474 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
14475 | type_name = dwarf2_name (die->parent, cu); |
14476 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
14477 | return 0; |
14478 | ||
14479 | len = strlen (fieldname); | |
fe978cb0 PA |
14480 | return (strncmp (fieldname, type_name, len) == 0 |
14481 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
14482 | } |
14483 | ||
e35000a7 TBA |
14484 | /* Check if the given VALUE is a recognized enum |
14485 | dwarf_defaulted_attribute constant according to DWARF5 spec, | |
14486 | Table 7.24. */ | |
14487 | ||
14488 | static bool | |
14489 | is_valid_DW_AT_defaulted (ULONGEST value) | |
14490 | { | |
14491 | switch (value) | |
14492 | { | |
14493 | case DW_DEFAULTED_no: | |
14494 | case DW_DEFAULTED_in_class: | |
14495 | case DW_DEFAULTED_out_of_class: | |
14496 | return true; | |
14497 | } | |
14498 | ||
3142e908 | 14499 | complaint (_("unrecognized DW_AT_defaulted value (%s)"), pulongest (value)); |
e35000a7 TBA |
14500 | return false; |
14501 | } | |
14502 | ||
c906108c SS |
14503 | /* Add a member function to the proper fieldlist. */ |
14504 | ||
14505 | static void | |
107d2387 | 14506 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14507 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 14508 | { |
518817b3 | 14509 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 14510 | struct attribute *attr; |
c906108c | 14511 | int i; |
be2daae6 | 14512 | struct fnfieldlist *flp = nullptr; |
c906108c | 14513 | struct fn_field *fnp; |
15d034d0 | 14514 | const char *fieldname; |
f792889a | 14515 | struct type *this_type; |
60d5a603 | 14516 | enum dwarf_access_attribute accessibility; |
c906108c | 14517 | |
b4ba55a1 | 14518 | if (cu->language == language_ada) |
a73c6dcd | 14519 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 14520 | |
2df3850c | 14521 | /* Get name of member function. */ |
39cbfefa DJ |
14522 | fieldname = dwarf2_name (die, cu); |
14523 | if (fieldname == NULL) | |
2df3850c | 14524 | return; |
c906108c | 14525 | |
c906108c | 14526 | /* Look up member function name in fieldlist. */ |
be2daae6 | 14527 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 14528 | { |
27bfe10e | 14529 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
14530 | { |
14531 | flp = &fip->fnfieldlists[i]; | |
14532 | break; | |
14533 | } | |
c906108c SS |
14534 | } |
14535 | ||
be2daae6 TT |
14536 | /* Create a new fnfieldlist if necessary. */ |
14537 | if (flp == nullptr) | |
c906108c | 14538 | { |
be2daae6 TT |
14539 | fip->fnfieldlists.emplace_back (); |
14540 | flp = &fip->fnfieldlists.back (); | |
c906108c | 14541 | flp->name = fieldname; |
be2daae6 | 14542 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
14543 | } |
14544 | ||
be2daae6 TT |
14545 | /* Create a new member function field and add it to the vector of |
14546 | fnfieldlists. */ | |
14547 | flp->fnfields.emplace_back (); | |
14548 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
14549 | |
14550 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 14551 | if (cu->language == language_cplus) |
be2daae6 TT |
14552 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
14553 | die, cu); | |
3da10d80 KS |
14554 | else |
14555 | { | |
1d06ead6 | 14556 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
14557 | fnp->physname = physname ? physname : ""; |
14558 | } | |
14559 | ||
c906108c | 14560 | fnp->type = alloc_type (objfile); |
f792889a DJ |
14561 | this_type = read_type_die (die, cu); |
14562 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 14563 | { |
f792889a | 14564 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 14565 | |
f792889a | 14566 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
14567 | of the method itself (TYPE_CODE_METHOD). */ |
14568 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
14569 | TYPE_TARGET_TYPE (this_type), |
14570 | TYPE_FIELDS (this_type), | |
14571 | TYPE_NFIELDS (this_type), | |
14572 | TYPE_VARARGS (this_type)); | |
c906108c SS |
14573 | |
14574 | /* Handle static member functions. | |
c5aa993b | 14575 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
14576 | member functions. G++ helps GDB by marking the first |
14577 | parameter for non-static member functions (which is the this | |
14578 | pointer) as artificial. We obtain this information from | |
14579 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 14580 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
14581 | fnp->voffset = VOFFSET_STATIC; |
14582 | } | |
14583 | else | |
b98664d3 | 14584 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 14585 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
14586 | |
14587 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 14588 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 14589 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 14590 | |
3e43a32a MS |
14591 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
14592 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
14593 | |
14594 | /* Get accessibility. */ | |
e142c38c | 14595 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 14596 | if (attr != nullptr) |
aead7601 | 14597 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
14598 | else |
14599 | accessibility = dwarf2_default_access_attribute (die, cu); | |
14600 | switch (accessibility) | |
c906108c | 14601 | { |
60d5a603 JK |
14602 | case DW_ACCESS_private: |
14603 | fnp->is_private = 1; | |
14604 | break; | |
14605 | case DW_ACCESS_protected: | |
14606 | fnp->is_protected = 1; | |
14607 | break; | |
c906108c SS |
14608 | } |
14609 | ||
b02dede2 | 14610 | /* Check for artificial methods. */ |
e142c38c | 14611 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
14612 | if (attr && DW_UNSND (attr) != 0) |
14613 | fnp->is_artificial = 1; | |
14614 | ||
e35000a7 TBA |
14615 | /* Check for defaulted methods. */ |
14616 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
14617 | if (attr != nullptr && is_valid_DW_AT_defaulted (DW_UNSND (attr))) | |
14618 | fnp->defaulted = (enum dwarf_defaulted_attribute) DW_UNSND (attr); | |
14619 | ||
14620 | /* Check for deleted methods. */ | |
14621 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
14622 | if (attr != nullptr && DW_UNSND (attr) != 0) | |
14623 | fnp->is_deleted = 1; | |
14624 | ||
7d27a96d TT |
14625 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
14626 | ||
0d564a31 | 14627 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
14628 | function. For older versions of GCC, this is an offset in the |
14629 | appropriate virtual table, as specified by DW_AT_containing_type. | |
14630 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
14631 | to the object address. */ |
14632 | ||
e142c38c | 14633 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 14634 | if (attr != nullptr) |
8e19ed76 | 14635 | { |
4fc6c0d5 | 14636 | if (attr->form_is_block () && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 14637 | { |
aec5aa8b TT |
14638 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
14639 | { | |
14640 | /* Old-style GCC. */ | |
14641 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
14642 | } | |
14643 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
14644 | || (DW_BLOCK (attr)->size > 1 | |
14645 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
14646 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
14647 | { | |
aec5aa8b TT |
14648 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
14649 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
14650 | dwarf2_complex_location_expr_complaint (); | |
14651 | else | |
14652 | fnp->voffset /= cu->header.addr_size; | |
14653 | fnp->voffset += 2; | |
14654 | } | |
14655 | else | |
14656 | dwarf2_complex_location_expr_complaint (); | |
14657 | ||
14658 | if (!fnp->fcontext) | |
7e993ebf KS |
14659 | { |
14660 | /* If there is no `this' field and no DW_AT_containing_type, | |
14661 | we cannot actually find a base class context for the | |
14662 | vtable! */ | |
14663 | if (TYPE_NFIELDS (this_type) == 0 | |
14664 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
14665 | { | |
b98664d3 | 14666 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
14667 | "function \"%s\" (offset %s)"), |
14668 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
14669 | } |
14670 | else | |
14671 | { | |
14672 | fnp->fcontext | |
14673 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
14674 | } | |
14675 | } | |
aec5aa8b | 14676 | } |
cd6c91b4 | 14677 | else if (attr->form_is_section_offset ()) |
8e19ed76 | 14678 | { |
4d3c2250 | 14679 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
14680 | } |
14681 | else | |
14682 | { | |
4d3c2250 KB |
14683 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
14684 | fieldname); | |
8e19ed76 | 14685 | } |
0d564a31 | 14686 | } |
d48cc9dd DJ |
14687 | else |
14688 | { | |
14689 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
14690 | if (attr && DW_UNSND (attr)) | |
14691 | { | |
14692 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 14693 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 14694 | "but the vtable offset is not specified"), |
9d8780f0 | 14695 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 14696 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
14697 | TYPE_CPLUS_DYNAMIC (type) = 1; |
14698 | } | |
14699 | } | |
c906108c SS |
14700 | } |
14701 | ||
14702 | /* Create the vector of member function fields, and attach it to the type. */ | |
14703 | ||
14704 | static void | |
fba45db2 | 14705 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 14706 | struct dwarf2_cu *cu) |
c906108c | 14707 | { |
b4ba55a1 | 14708 | if (cu->language == language_ada) |
a73c6dcd | 14709 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 14710 | |
c906108c SS |
14711 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
14712 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
14713 | TYPE_ALLOC (type, |
14714 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 14715 | |
be2daae6 | 14716 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 14717 | { |
be2daae6 | 14718 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 14719 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 14720 | |
be2daae6 TT |
14721 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
14722 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 14723 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
14724 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
14725 | ||
14726 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
14727 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
14728 | } |
14729 | ||
be2daae6 | 14730 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
14731 | } |
14732 | ||
1168df01 JB |
14733 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
14734 | language, zero otherwise. */ | |
14735 | static int | |
14736 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
14737 | { | |
14738 | static const char vptr[] = "_vptr"; | |
14739 | ||
9c37b5ae TT |
14740 | /* Look for the C++ form of the vtable. */ |
14741 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
14742 | return 1; |
14743 | ||
14744 | return 0; | |
14745 | } | |
14746 | ||
c0dd20ea | 14747 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
14748 | functions, with the ABI-specified layout. If TYPE describes |
14749 | such a structure, smash it into a member function type. | |
61049d3b DJ |
14750 | |
14751 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
14752 | This is GCC PR debug/28767. */ | |
c0dd20ea | 14753 | |
0b92b5bb TT |
14754 | static void |
14755 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 14756 | { |
09e2d7c7 | 14757 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
14758 | |
14759 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
14760 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
14761 | return; | |
c0dd20ea DJ |
14762 | |
14763 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
14764 | if (TYPE_FIELD_NAME (type, 0) == NULL |
14765 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
14766 | || TYPE_FIELD_NAME (type, 1) == NULL | |
14767 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
14768 | return; | |
c0dd20ea DJ |
14769 | |
14770 | /* Find the type of the method. */ | |
0b92b5bb | 14771 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
14772 | if (pfn_type == NULL |
14773 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
14774 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 14775 | return; |
c0dd20ea DJ |
14776 | |
14777 | /* Look for the "this" argument. */ | |
14778 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
14779 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 14780 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 14781 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 14782 | return; |
c0dd20ea | 14783 | |
09e2d7c7 | 14784 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 14785 | new_type = alloc_type (objfile); |
09e2d7c7 | 14786 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
14787 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
14788 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 14789 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 14790 | } |
1168df01 | 14791 | |
2b4424c3 TT |
14792 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
14793 | appropriate error checking and issuing complaints if there is a | |
14794 | problem. */ | |
14795 | ||
14796 | static ULONGEST | |
14797 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
14798 | { | |
14799 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
14800 | ||
14801 | if (attr == nullptr) | |
14802 | return 0; | |
14803 | ||
cd6c91b4 | 14804 | if (!attr->form_is_constant ()) |
2b4424c3 | 14805 | { |
b98664d3 | 14806 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
14807 | " - DIE at %s [in module %s]"), |
14808 | sect_offset_str (die->sect_off), | |
14809 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
14810 | return 0; | |
14811 | } | |
14812 | ||
14813 | ULONGEST align; | |
14814 | if (attr->form == DW_FORM_sdata) | |
14815 | { | |
14816 | LONGEST val = DW_SND (attr); | |
14817 | if (val < 0) | |
14818 | { | |
b98664d3 | 14819 | complaint (_("DW_AT_alignment value must not be negative" |
2b4424c3 TT |
14820 | " - DIE at %s [in module %s]"), |
14821 | sect_offset_str (die->sect_off), | |
14822 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
14823 | return 0; | |
14824 | } | |
14825 | align = val; | |
14826 | } | |
14827 | else | |
14828 | align = DW_UNSND (attr); | |
14829 | ||
14830 | if (align == 0) | |
14831 | { | |
b98664d3 | 14832 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
14833 | " - DIE at %s [in module %s]"), |
14834 | sect_offset_str (die->sect_off), | |
14835 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
14836 | return 0; | |
14837 | } | |
14838 | if ((align & (align - 1)) != 0) | |
14839 | { | |
b98664d3 | 14840 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
14841 | " - DIE at %s [in module %s]"), |
14842 | sect_offset_str (die->sect_off), | |
14843 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
14844 | return 0; | |
14845 | } | |
14846 | ||
14847 | return align; | |
14848 | } | |
14849 | ||
14850 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
14851 | the alignment for TYPE. */ | |
14852 | ||
14853 | static void | |
14854 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
14855 | struct type *type) | |
14856 | { | |
14857 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 14858 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
14859 | " - DIE at %s [in module %s]"), |
14860 | sect_offset_str (die->sect_off), | |
14861 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
14862 | } | |
685b1105 | 14863 | |
e35000a7 TBA |
14864 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
14865 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
14866 | ||
14867 | static bool | |
14868 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
14869 | { | |
14870 | switch (value) | |
14871 | { | |
14872 | case DW_CC_normal: | |
14873 | case DW_CC_pass_by_reference: | |
14874 | case DW_CC_pass_by_value: | |
14875 | return true; | |
14876 | ||
14877 | default: | |
14878 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 14879 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
14880 | return false; |
14881 | } | |
14882 | } | |
14883 | ||
d0922fcf TBA |
14884 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
14885 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
14886 | also according to GNU-specific values (see include/dwarf2.h). */ | |
14887 | ||
14888 | static bool | |
14889 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
14890 | { | |
14891 | switch (value) | |
14892 | { | |
14893 | case DW_CC_normal: | |
14894 | case DW_CC_program: | |
14895 | case DW_CC_nocall: | |
14896 | return true; | |
14897 | ||
14898 | case DW_CC_GNU_renesas_sh: | |
14899 | case DW_CC_GNU_borland_fastcall_i386: | |
14900 | case DW_CC_GDB_IBM_OpenCL: | |
14901 | return true; | |
14902 | ||
14903 | default: | |
14904 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 14905 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
14906 | return false; |
14907 | } | |
14908 | } | |
14909 | ||
c906108c | 14910 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
14911 | (definition) to create a type for the structure or union. Fill in |
14912 | the type's name and general properties; the members will not be | |
83655187 DE |
14913 | processed until process_structure_scope. A symbol table entry for |
14914 | the type will also not be done until process_structure_scope (assuming | |
14915 | the type has a name). | |
c906108c | 14916 | |
c767944b DJ |
14917 | NOTE: we need to call these functions regardless of whether or not the |
14918 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 14919 | structure or union. This gets the type entered into our set of |
83655187 | 14920 | user defined types. */ |
c906108c | 14921 | |
f792889a | 14922 | static struct type * |
134d01f1 | 14923 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14924 | { |
518817b3 | 14925 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
14926 | struct type *type; |
14927 | struct attribute *attr; | |
15d034d0 | 14928 | const char *name; |
c906108c | 14929 | |
348e048f DE |
14930 | /* If the definition of this type lives in .debug_types, read that type. |
14931 | Don't follow DW_AT_specification though, that will take us back up | |
14932 | the chain and we want to go down. */ | |
052c8bb8 | 14933 | attr = die->attr (DW_AT_signature); |
435d3d88 | 14934 | if (attr != nullptr) |
348e048f | 14935 | { |
ac9ec31b | 14936 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 14937 | |
ac9ec31b | 14938 | /* The type's CU may not be the same as CU. |
02142a6c | 14939 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
14940 | return set_die_type (die, type, cu); |
14941 | } | |
14942 | ||
c0dd20ea | 14943 | type = alloc_type (objfile); |
c906108c | 14944 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 14945 | |
39cbfefa DJ |
14946 | name = dwarf2_name (die, cu); |
14947 | if (name != NULL) | |
c906108c | 14948 | { |
987504bb | 14949 | if (cu->language == language_cplus |
c44af4eb TT |
14950 | || cu->language == language_d |
14951 | || cu->language == language_rust) | |
63d06c5c | 14952 | { |
15d034d0 | 14953 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
14954 | |
14955 | /* dwarf2_full_name might have already finished building the DIE's | |
14956 | type. If so, there is no need to continue. */ | |
14957 | if (get_die_type (die, cu) != NULL) | |
14958 | return get_die_type (die, cu); | |
14959 | ||
e86ca25f | 14960 | TYPE_NAME (type) = full_name; |
63d06c5c DC |
14961 | } |
14962 | else | |
14963 | { | |
d8151005 DJ |
14964 | /* The name is already allocated along with this objfile, so |
14965 | we don't need to duplicate it for the type. */ | |
e86ca25f | 14966 | TYPE_NAME (type) = name; |
63d06c5c | 14967 | } |
c906108c SS |
14968 | } |
14969 | ||
14970 | if (die->tag == DW_TAG_structure_type) | |
14971 | { | |
14972 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
14973 | } | |
14974 | else if (die->tag == DW_TAG_union_type) | |
14975 | { | |
14976 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
14977 | } | |
2ddeaf8a TT |
14978 | else if (die->tag == DW_TAG_variant_part) |
14979 | { | |
14980 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
14981 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
14982 | } | |
c906108c SS |
14983 | else |
14984 | { | |
4753d33b | 14985 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
14986 | } |
14987 | ||
0cc2414c TT |
14988 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
14989 | TYPE_DECLARED_CLASS (type) = 1; | |
14990 | ||
e35000a7 TBA |
14991 | /* Store the calling convention in the type if it's available in |
14992 | the die. Otherwise the calling convention remains set to | |
14993 | the default value DW_CC_normal. */ | |
14994 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
14995 | if (attr != nullptr | |
14996 | && is_valid_DW_AT_calling_convention_for_type (DW_UNSND (attr))) | |
14997 | { | |
14998 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
14999 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
15000 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
15001 | } | |
15002 | ||
e142c38c | 15003 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15004 | if (attr != nullptr) |
c906108c | 15005 | { |
cd6c91b4 | 15006 | if (attr->form_is_constant ()) |
155bfbd3 JB |
15007 | TYPE_LENGTH (type) = DW_UNSND (attr); |
15008 | else | |
15009 | { | |
15010 | /* For the moment, dynamic type sizes are not supported | |
15011 | by GDB's struct type. The actual size is determined | |
15012 | on-demand when resolving the type of a given object, | |
15013 | so set the type's length to zero for now. Otherwise, | |
15014 | we record an expression as the length, and that expression | |
15015 | could lead to a very large value, which could eventually | |
15016 | lead to us trying to allocate that much memory when creating | |
15017 | a value of that type. */ | |
15018 | TYPE_LENGTH (type) = 0; | |
15019 | } | |
c906108c SS |
15020 | } |
15021 | else | |
15022 | { | |
15023 | TYPE_LENGTH (type) = 0; | |
15024 | } | |
15025 | ||
2b4424c3 TT |
15026 | maybe_set_alignment (cu, die, type); |
15027 | ||
5230b05a | 15028 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15029 | { |
5230b05a WT |
15030 | /* ICC<14 does not output the required DW_AT_declaration on |
15031 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15032 | TYPE_STUB (type) = 1; |
685b1105 JK |
15033 | } |
15034 | else | |
15035 | TYPE_STUB_SUPPORTED (type) = 1; | |
15036 | ||
dc718098 | 15037 | if (die_is_declaration (die, cu)) |
876cecd0 | 15038 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15039 | else if (attr == NULL && die->child == NULL |
15040 | && producer_is_realview (cu->producer)) | |
15041 | /* RealView does not output the required DW_AT_declaration | |
15042 | on incomplete types. */ | |
15043 | TYPE_STUB (type) = 1; | |
dc718098 | 15044 | |
c906108c SS |
15045 | /* We need to add the type field to the die immediately so we don't |
15046 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15047 | type within the structure itself. */ |
1c379e20 | 15048 | set_die_type (die, type, cu); |
c906108c | 15049 | |
7e314c57 JK |
15050 | /* set_die_type should be already done. */ |
15051 | set_descriptive_type (type, die, cu); | |
15052 | ||
c767944b DJ |
15053 | return type; |
15054 | } | |
15055 | ||
2ddeaf8a TT |
15056 | /* A helper for process_structure_scope that handles a single member |
15057 | DIE. */ | |
15058 | ||
15059 | static void | |
15060 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15061 | struct field_info *fi, | |
15062 | std::vector<struct symbol *> *template_args, | |
15063 | struct dwarf2_cu *cu) | |
15064 | { | |
15065 | if (child_die->tag == DW_TAG_member | |
15066 | || child_die->tag == DW_TAG_variable | |
15067 | || child_die->tag == DW_TAG_variant_part) | |
15068 | { | |
15069 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15070 | should be a DW_TAG_member that is a declaration, but | |
15071 | all versions of G++ as of this writing (so through at | |
15072 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15073 | tags for them instead. */ | |
15074 | dwarf2_add_field (fi, child_die, cu); | |
15075 | } | |
15076 | else if (child_die->tag == DW_TAG_subprogram) | |
15077 | { | |
15078 | /* Rust doesn't have member functions in the C++ sense. | |
15079 | However, it does emit ordinary functions as children | |
15080 | of a struct DIE. */ | |
15081 | if (cu->language == language_rust) | |
15082 | read_func_scope (child_die, cu); | |
15083 | else | |
15084 | { | |
15085 | /* C++ member function. */ | |
15086 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
15087 | } | |
15088 | } | |
15089 | else if (child_die->tag == DW_TAG_inheritance) | |
15090 | { | |
15091 | /* C++ base class field. */ | |
15092 | dwarf2_add_field (fi, child_die, cu); | |
15093 | } | |
15094 | else if (type_can_define_types (child_die)) | |
15095 | dwarf2_add_type_defn (fi, child_die, cu); | |
15096 | else if (child_die->tag == DW_TAG_template_type_param | |
15097 | || child_die->tag == DW_TAG_template_value_param) | |
15098 | { | |
15099 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15100 | ||
15101 | if (arg != NULL) | |
15102 | template_args->push_back (arg); | |
15103 | } | |
15104 | else if (child_die->tag == DW_TAG_variant) | |
15105 | { | |
15106 | /* In a variant we want to get the discriminant and also add a | |
15107 | field for our sole member child. */ | |
15108 | struct attribute *discr = dwarf2_attr (child_die, DW_AT_discr_value, cu); | |
15109 | ||
bde09ab7 | 15110 | for (die_info *variant_child = child_die->child; |
2ddeaf8a | 15111 | variant_child != NULL; |
436c571c | 15112 | variant_child = variant_child->sibling) |
2ddeaf8a TT |
15113 | { |
15114 | if (variant_child->tag == DW_TAG_member) | |
15115 | { | |
15116 | handle_struct_member_die (variant_child, type, fi, | |
15117 | template_args, cu); | |
15118 | /* Only handle the one. */ | |
15119 | break; | |
15120 | } | |
15121 | } | |
15122 | ||
15123 | /* We don't handle this but we might as well report it if we see | |
15124 | it. */ | |
15125 | if (dwarf2_attr (child_die, DW_AT_discr_list, cu) != nullptr) | |
b98664d3 | 15126 | complaint (_("DW_AT_discr_list is not supported yet" |
2ddeaf8a TT |
15127 | " - DIE at %s [in module %s]"), |
15128 | sect_offset_str (child_die->sect_off), | |
15129 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15130 | ||
15131 | /* The first field was just added, so we can stash the | |
15132 | discriminant there. */ | |
be2daae6 | 15133 | gdb_assert (!fi->fields.empty ()); |
2ddeaf8a | 15134 | if (discr == NULL) |
be2daae6 | 15135 | fi->fields.back ().variant.default_branch = true; |
2ddeaf8a | 15136 | else |
be2daae6 | 15137 | fi->fields.back ().variant.discriminant_value = DW_UNSND (discr); |
2ddeaf8a TT |
15138 | } |
15139 | } | |
15140 | ||
c767944b DJ |
15141 | /* Finish creating a structure or union type, including filling in |
15142 | its members and creating a symbol for it. */ | |
15143 | ||
15144 | static void | |
15145 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15146 | { | |
518817b3 | 15147 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
ca040673 | 15148 | struct die_info *child_die; |
c767944b DJ |
15149 | struct type *type; |
15150 | ||
15151 | type = get_die_type (die, cu); | |
15152 | if (type == NULL) | |
15153 | type = read_structure_type (die, cu); | |
15154 | ||
2ddeaf8a TT |
15155 | /* When reading a DW_TAG_variant_part, we need to notice when we |
15156 | read the discriminant member, so we can record it later in the | |
15157 | discriminant_info. */ | |
15158 | bool is_variant_part = TYPE_FLAG_DISCRIMINATED_UNION (type); | |
feee869b | 15159 | sect_offset discr_offset {}; |
3e1d3d8c | 15160 | bool has_template_parameters = false; |
2ddeaf8a TT |
15161 | |
15162 | if (is_variant_part) | |
15163 | { | |
15164 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
15165 | if (discr == NULL) | |
15166 | { | |
15167 | /* Maybe it's a univariant form, an extension we support. | |
15168 | In this case arrange not to check the offset. */ | |
15169 | is_variant_part = false; | |
15170 | } | |
cd6c91b4 | 15171 | else if (discr->form_is_ref ()) |
2ddeaf8a TT |
15172 | { |
15173 | struct dwarf2_cu *target_cu = cu; | |
15174 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
15175 | ||
15176 | discr_offset = target_die->sect_off; | |
15177 | } | |
15178 | else | |
15179 | { | |
b98664d3 | 15180 | complaint (_("DW_AT_discr does not have DIE reference form" |
2ddeaf8a TT |
15181 | " - DIE at %s [in module %s]"), |
15182 | sect_offset_str (die->sect_off), | |
15183 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15184 | is_variant_part = false; | |
15185 | } | |
15186 | } | |
15187 | ||
e142c38c | 15188 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
15189 | { |
15190 | struct field_info fi; | |
2f4732b0 | 15191 | std::vector<struct symbol *> template_args; |
c906108c | 15192 | |
639d11d3 | 15193 | child_die = die->child; |
c906108c SS |
15194 | |
15195 | while (child_die && child_die->tag) | |
15196 | { | |
2ddeaf8a | 15197 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
34eaf542 | 15198 | |
2ddeaf8a | 15199 | if (is_variant_part && discr_offset == child_die->sect_off) |
be2daae6 | 15200 | fi.fields.back ().variant.is_discriminant = true; |
34eaf542 | 15201 | |
436c571c | 15202 | child_die = child_die->sibling; |
c906108c SS |
15203 | } |
15204 | ||
34eaf542 | 15205 | /* Attach template arguments to type. */ |
2f4732b0 | 15206 | if (!template_args.empty ()) |
34eaf542 | 15207 | { |
3e1d3d8c | 15208 | has_template_parameters = true; |
34eaf542 | 15209 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 15210 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 15211 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
15212 | = XOBNEWVEC (&objfile->objfile_obstack, |
15213 | struct symbol *, | |
15214 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 15215 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 15216 | template_args.data (), |
34eaf542 TT |
15217 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
15218 | * sizeof (struct symbol *))); | |
34eaf542 TT |
15219 | } |
15220 | ||
c906108c | 15221 | /* Attach fields and member functions to the type. */ |
317f7127 | 15222 | if (fi.nfields () > 0) |
e7c27a73 | 15223 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 15224 | if (!fi.fnfieldlists.empty ()) |
c906108c | 15225 | { |
e7c27a73 | 15226 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 15227 | |
c5aa993b | 15228 | /* Get the type which refers to the base class (possibly this |
c906108c | 15229 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
15230 | class from the DW_AT_containing_type attribute. This use of |
15231 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 15232 | |
e142c38c | 15233 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 15234 | { |
e7c27a73 | 15235 | struct type *t = die_containing_type (die, cu); |
c906108c | 15236 | |
ae6ae975 | 15237 | set_type_vptr_basetype (type, t); |
c906108c SS |
15238 | if (type == t) |
15239 | { | |
c906108c SS |
15240 | int i; |
15241 | ||
15242 | /* Our own class provides vtbl ptr. */ | |
15243 | for (i = TYPE_NFIELDS (t) - 1; | |
15244 | i >= TYPE_N_BASECLASSES (t); | |
15245 | --i) | |
15246 | { | |
0d5cff50 | 15247 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 15248 | |
1168df01 | 15249 | if (is_vtable_name (fieldname, cu)) |
c906108c | 15250 | { |
ae6ae975 | 15251 | set_type_vptr_fieldno (type, i); |
c906108c SS |
15252 | break; |
15253 | } | |
15254 | } | |
15255 | ||
15256 | /* Complain if virtual function table field not found. */ | |
15257 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 15258 | complaint (_("virtual function table pointer " |
3e43a32a | 15259 | "not found when defining class '%s'"), |
e86ca25f | 15260 | TYPE_NAME (type) ? TYPE_NAME (type) : ""); |
c906108c SS |
15261 | } |
15262 | else | |
15263 | { | |
ae6ae975 | 15264 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
15265 | } |
15266 | } | |
f6235d4c | 15267 | else if (cu->producer |
61012eef | 15268 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
15269 | { |
15270 | /* The IBM XLC compiler does not provide direct indication | |
15271 | of the containing type, but the vtable pointer is | |
15272 | always named __vfp. */ | |
15273 | ||
15274 | int i; | |
15275 | ||
15276 | for (i = TYPE_NFIELDS (type) - 1; | |
15277 | i >= TYPE_N_BASECLASSES (type); | |
15278 | --i) | |
15279 | { | |
15280 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
15281 | { | |
ae6ae975 DE |
15282 | set_type_vptr_fieldno (type, i); |
15283 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
15284 | break; |
15285 | } | |
15286 | } | |
15287 | } | |
c906108c | 15288 | } |
98751a41 JK |
15289 | |
15290 | /* Copy fi.typedef_field_list linked list elements content into the | |
15291 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 15292 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 15293 | { |
be2daae6 | 15294 | int count = fi.typedef_field_list.size (); |
98751a41 | 15295 | |
a0d7a4ff | 15296 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 15297 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 15298 | = ((struct decl_field *) |
be2daae6 TT |
15299 | TYPE_ALLOC (type, |
15300 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
15301 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 15302 | |
be2daae6 TT |
15303 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
15304 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 15305 | } |
c767944b | 15306 | |
883fd55a KS |
15307 | /* Copy fi.nested_types_list linked list elements content into the |
15308 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 15309 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 15310 | { |
be2daae6 | 15311 | int count = fi.nested_types_list.size (); |
883fd55a KS |
15312 | |
15313 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15314 | TYPE_NESTED_TYPES_ARRAY (type) | |
15315 | = ((struct decl_field *) | |
be2daae6 TT |
15316 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
15317 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 15318 | |
be2daae6 TT |
15319 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
15320 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 15321 | } |
c906108c | 15322 | } |
63d06c5c | 15323 | |
bb5ed363 | 15324 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
15325 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
15326 | cu->rust_unions.push_back (type); | |
0b92b5bb | 15327 | |
90aeadfc DC |
15328 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
15329 | snapshots) has been known to create a die giving a declaration | |
15330 | for a class that has, as a child, a die giving a definition for a | |
15331 | nested class. So we have to process our children even if the | |
15332 | current die is a declaration. Normally, of course, a declaration | |
15333 | won't have any children at all. */ | |
134d01f1 | 15334 | |
ca040673 DE |
15335 | child_die = die->child; |
15336 | ||
90aeadfc DC |
15337 | while (child_die != NULL && child_die->tag) |
15338 | { | |
15339 | if (child_die->tag == DW_TAG_member | |
15340 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
15341 | || child_die->tag == DW_TAG_inheritance |
15342 | || child_die->tag == DW_TAG_template_value_param | |
15343 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 15344 | { |
90aeadfc | 15345 | /* Do nothing. */ |
134d01f1 | 15346 | } |
90aeadfc DC |
15347 | else |
15348 | process_die (child_die, cu); | |
134d01f1 | 15349 | |
436c571c | 15350 | child_die = child_die->sibling; |
134d01f1 DJ |
15351 | } |
15352 | ||
fa4028e9 JB |
15353 | /* Do not consider external references. According to the DWARF standard, |
15354 | these DIEs are identified by the fact that they have no byte_size | |
15355 | attribute, and a declaration attribute. */ | |
15356 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15357 | || !die_is_declaration (die, cu)) | |
3e1d3d8c TT |
15358 | { |
15359 | struct symbol *sym = new_symbol (die, type, cu); | |
15360 | ||
15361 | if (has_template_parameters) | |
15362 | { | |
a776957c TT |
15363 | struct symtab *symtab; |
15364 | if (sym != nullptr) | |
15365 | symtab = symbol_symtab (sym); | |
15366 | else if (cu->line_header != nullptr) | |
15367 | { | |
15368 | /* Any related symtab will do. */ | |
15369 | symtab | |
7ba99d21 | 15370 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
15371 | } |
15372 | else | |
15373 | { | |
15374 | symtab = nullptr; | |
15375 | complaint (_("could not find suitable " | |
15376 | "symtab for template parameter" | |
15377 | " - DIE at %s [in module %s]"), | |
15378 | sect_offset_str (die->sect_off), | |
15379 | objfile_name (objfile)); | |
15380 | } | |
15381 | ||
15382 | if (symtab != nullptr) | |
15383 | { | |
15384 | /* Make sure that the symtab is set on the new symbols. | |
15385 | Even though they don't appear in this symtab directly, | |
15386 | other parts of gdb assume that symbols do, and this is | |
15387 | reasonably true. */ | |
15388 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
15389 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
15390 | } | |
3e1d3d8c TT |
15391 | } |
15392 | } | |
134d01f1 DJ |
15393 | } |
15394 | ||
55426c9d JB |
15395 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
15396 | update TYPE using some information only available in DIE's children. */ | |
15397 | ||
15398 | static void | |
15399 | update_enumeration_type_from_children (struct die_info *die, | |
15400 | struct type *type, | |
15401 | struct dwarf2_cu *cu) | |
15402 | { | |
60f7655a | 15403 | struct die_info *child_die; |
55426c9d JB |
15404 | int unsigned_enum = 1; |
15405 | int flag_enum = 1; | |
55426c9d | 15406 | |
8268c778 | 15407 | auto_obstack obstack; |
55426c9d | 15408 | |
60f7655a DE |
15409 | for (child_die = die->child; |
15410 | child_die != NULL && child_die->tag; | |
436c571c | 15411 | child_die = child_die->sibling) |
55426c9d JB |
15412 | { |
15413 | struct attribute *attr; | |
15414 | LONGEST value; | |
15415 | const gdb_byte *bytes; | |
15416 | struct dwarf2_locexpr_baton *baton; | |
15417 | const char *name; | |
60f7655a | 15418 | |
55426c9d JB |
15419 | if (child_die->tag != DW_TAG_enumerator) |
15420 | continue; | |
15421 | ||
15422 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
15423 | if (attr == NULL) | |
15424 | continue; | |
15425 | ||
15426 | name = dwarf2_name (child_die, cu); | |
15427 | if (name == NULL) | |
15428 | name = "<anonymous enumerator>"; | |
15429 | ||
15430 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
15431 | &value, &bytes, &baton); | |
15432 | if (value < 0) | |
15433 | { | |
15434 | unsigned_enum = 0; | |
15435 | flag_enum = 0; | |
15436 | } | |
55426c9d | 15437 | else |
edd45eb0 SM |
15438 | { |
15439 | if (count_one_bits_ll (value) >= 2) | |
15440 | flag_enum = 0; | |
edd45eb0 | 15441 | } |
55426c9d JB |
15442 | |
15443 | /* If we already know that the enum type is neither unsigned, nor | |
15444 | a flag type, no need to look at the rest of the enumerates. */ | |
15445 | if (!unsigned_enum && !flag_enum) | |
15446 | break; | |
55426c9d JB |
15447 | } |
15448 | ||
15449 | if (unsigned_enum) | |
15450 | TYPE_UNSIGNED (type) = 1; | |
15451 | if (flag_enum) | |
15452 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
15453 | } |
15454 | ||
134d01f1 DJ |
15455 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
15456 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 15457 | |
f792889a | 15458 | static struct type * |
134d01f1 | 15459 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15460 | { |
518817b3 | 15461 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 15462 | struct type *type; |
c906108c | 15463 | struct attribute *attr; |
0114d602 | 15464 | const char *name; |
134d01f1 | 15465 | |
348e048f DE |
15466 | /* If the definition of this type lives in .debug_types, read that type. |
15467 | Don't follow DW_AT_specification though, that will take us back up | |
15468 | the chain and we want to go down. */ | |
052c8bb8 | 15469 | attr = die->attr (DW_AT_signature); |
435d3d88 | 15470 | if (attr != nullptr) |
348e048f | 15471 | { |
ac9ec31b | 15472 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15473 | |
ac9ec31b | 15474 | /* The type's CU may not be the same as CU. |
02142a6c | 15475 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15476 | return set_die_type (die, type, cu); |
15477 | } | |
15478 | ||
c906108c SS |
15479 | type = alloc_type (objfile); |
15480 | ||
15481 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 15482 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 15483 | if (name != NULL) |
e86ca25f | 15484 | TYPE_NAME (type) = name; |
c906108c | 15485 | |
0626fc76 TT |
15486 | attr = dwarf2_attr (die, DW_AT_type, cu); |
15487 | if (attr != NULL) | |
15488 | { | |
15489 | struct type *underlying_type = die_type (die, cu); | |
15490 | ||
15491 | TYPE_TARGET_TYPE (type) = underlying_type; | |
15492 | } | |
15493 | ||
e142c38c | 15494 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15495 | if (attr != nullptr) |
c906108c SS |
15496 | { |
15497 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
15498 | } | |
15499 | else | |
15500 | { | |
15501 | TYPE_LENGTH (type) = 0; | |
15502 | } | |
15503 | ||
2b4424c3 TT |
15504 | maybe_set_alignment (cu, die, type); |
15505 | ||
137033e9 JB |
15506 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
15507 | declared as private in the package spec, and then defined only | |
15508 | inside the package body. Such types are known as Taft Amendment | |
15509 | Types. When another package uses such a type, an incomplete DIE | |
15510 | may be generated by the compiler. */ | |
02eb380e | 15511 | if (die_is_declaration (die, cu)) |
876cecd0 | 15512 | TYPE_STUB (type) = 1; |
02eb380e | 15513 | |
0626fc76 TT |
15514 | /* Finish the creation of this type by using the enum's children. |
15515 | We must call this even when the underlying type has been provided | |
15516 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
15517 | update_enumeration_type_from_children (die, type, cu); |
15518 | ||
0626fc76 TT |
15519 | /* If this type has an underlying type that is not a stub, then we |
15520 | may use its attributes. We always use the "unsigned" attribute | |
15521 | in this situation, because ordinarily we guess whether the type | |
15522 | is unsigned -- but the guess can be wrong and the underlying type | |
15523 | can tell us the reality. However, we defer to a local size | |
15524 | attribute if one exists, because this lets the compiler override | |
15525 | the underlying type if needed. */ | |
15526 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
15527 | { | |
15528 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
15529 | if (TYPE_LENGTH (type) == 0) | |
15530 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
2b4424c3 TT |
15531 | if (TYPE_RAW_ALIGN (type) == 0 |
15532 | && TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type)) != 0) | |
15533 | set_type_align (type, TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type))); | |
0626fc76 TT |
15534 | } |
15535 | ||
3d567982 TT |
15536 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
15537 | ||
f792889a | 15538 | return set_die_type (die, type, cu); |
134d01f1 DJ |
15539 | } |
15540 | ||
15541 | /* Given a pointer to a die which begins an enumeration, process all | |
15542 | the dies that define the members of the enumeration, and create the | |
15543 | symbol for the enumeration type. | |
15544 | ||
15545 | NOTE: We reverse the order of the element list. */ | |
15546 | ||
15547 | static void | |
15548 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15549 | { | |
f792889a | 15550 | struct type *this_type; |
134d01f1 | 15551 | |
f792889a DJ |
15552 | this_type = get_die_type (die, cu); |
15553 | if (this_type == NULL) | |
15554 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 15555 | |
639d11d3 | 15556 | if (die->child != NULL) |
c906108c | 15557 | { |
9dc481d3 DE |
15558 | struct die_info *child_die; |
15559 | struct symbol *sym; | |
43816ebc | 15560 | std::vector<struct field> fields; |
15d034d0 | 15561 | const char *name; |
9dc481d3 | 15562 | |
639d11d3 | 15563 | child_die = die->child; |
c906108c SS |
15564 | while (child_die && child_die->tag) |
15565 | { | |
15566 | if (child_die->tag != DW_TAG_enumerator) | |
15567 | { | |
e7c27a73 | 15568 | process_die (child_die, cu); |
c906108c SS |
15569 | } |
15570 | else | |
15571 | { | |
39cbfefa DJ |
15572 | name = dwarf2_name (child_die, cu); |
15573 | if (name) | |
c906108c | 15574 | { |
f792889a | 15575 | sym = new_symbol (child_die, this_type, cu); |
c906108c | 15576 | |
43816ebc TT |
15577 | fields.emplace_back (); |
15578 | struct field &field = fields.back (); | |
c906108c | 15579 | |
43816ebc TT |
15580 | FIELD_NAME (field) = sym->linkage_name (); |
15581 | FIELD_TYPE (field) = NULL; | |
15582 | SET_FIELD_ENUMVAL (field, SYMBOL_VALUE (sym)); | |
15583 | FIELD_BITSIZE (field) = 0; | |
c906108c SS |
15584 | } |
15585 | } | |
15586 | ||
436c571c | 15587 | child_die = child_die->sibling; |
c906108c SS |
15588 | } |
15589 | ||
43816ebc | 15590 | if (!fields.empty ()) |
c906108c | 15591 | { |
43816ebc | 15592 | TYPE_NFIELDS (this_type) = fields.size (); |
f792889a | 15593 | TYPE_FIELDS (this_type) = (struct field *) |
43816ebc TT |
15594 | TYPE_ALLOC (this_type, sizeof (struct field) * fields.size ()); |
15595 | memcpy (TYPE_FIELDS (this_type), fields.data (), | |
15596 | sizeof (struct field) * fields.size ()); | |
c906108c | 15597 | } |
c906108c | 15598 | } |
134d01f1 | 15599 | |
6c83ed52 TT |
15600 | /* If we are reading an enum from a .debug_types unit, and the enum |
15601 | is a declaration, and the enum is not the signatured type in the | |
15602 | unit, then we do not want to add a symbol for it. Adding a | |
15603 | symbol would in some cases obscure the true definition of the | |
15604 | enum, giving users an incomplete type when the definition is | |
15605 | actually available. Note that we do not want to do this for all | |
15606 | enums which are just declarations, because C++0x allows forward | |
15607 | enum declarations. */ | |
3019eac3 | 15608 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
15609 | && die_is_declaration (die, cu)) |
15610 | { | |
52dc124a | 15611 | struct signatured_type *sig_type; |
6c83ed52 | 15612 | |
c0f78cd4 | 15613 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
15614 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
15615 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
15616 | return; |
15617 | } | |
15618 | ||
f792889a | 15619 | new_symbol (die, this_type, cu); |
c906108c SS |
15620 | } |
15621 | ||
15622 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
15623 | the DIE's type field. For now, this only handles one dimensional | |
15624 | arrays. */ | |
15625 | ||
f792889a | 15626 | static struct type * |
e7c27a73 | 15627 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15628 | { |
518817b3 | 15629 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 15630 | struct die_info *child_die; |
7e314c57 | 15631 | struct type *type; |
c906108c | 15632 | struct type *element_type, *range_type, *index_type; |
c906108c | 15633 | struct attribute *attr; |
15d034d0 | 15634 | const char *name; |
a405673c | 15635 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 15636 | unsigned int bit_stride = 0; |
c906108c | 15637 | |
e7c27a73 | 15638 | element_type = die_type (die, cu); |
c906108c | 15639 | |
7e314c57 JK |
15640 | /* The die_type call above may have already set the type for this DIE. */ |
15641 | type = get_die_type (die, cu); | |
15642 | if (type) | |
15643 | return type; | |
15644 | ||
dc53a7ad JB |
15645 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
15646 | if (attr != NULL) | |
a405673c JB |
15647 | { |
15648 | int stride_ok; | |
09ba997f | 15649 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
a405673c JB |
15650 | |
15651 | byte_stride_prop | |
15652 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
15653 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
15654 | prop_type); | |
a405673c JB |
15655 | if (!stride_ok) |
15656 | { | |
b98664d3 | 15657 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
15658 | " - DIE at %s [in module %s]"), |
15659 | sect_offset_str (die->sect_off), | |
518817b3 | 15660 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a405673c JB |
15661 | /* Ignore this attribute. We will likely not be able to print |
15662 | arrays of this type correctly, but there is little we can do | |
15663 | to help if we cannot read the attribute's value. */ | |
15664 | byte_stride_prop = NULL; | |
15665 | } | |
15666 | } | |
dc53a7ad JB |
15667 | |
15668 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
15669 | if (attr != NULL) | |
15670 | bit_stride = DW_UNSND (attr); | |
15671 | ||
c906108c SS |
15672 | /* Irix 6.2 native cc creates array types without children for |
15673 | arrays with unspecified length. */ | |
639d11d3 | 15674 | if (die->child == NULL) |
c906108c | 15675 | { |
46bf5051 | 15676 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 15677 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 15678 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 15679 | byte_stride_prop, bit_stride); |
f792889a | 15680 | return set_die_type (die, type, cu); |
c906108c SS |
15681 | } |
15682 | ||
791afaa2 | 15683 | std::vector<struct type *> range_types; |
639d11d3 | 15684 | child_die = die->child; |
c906108c SS |
15685 | while (child_die && child_die->tag) |
15686 | { | |
15687 | if (child_die->tag == DW_TAG_subrange_type) | |
15688 | { | |
f792889a | 15689 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 15690 | |
f792889a | 15691 | if (child_type != NULL) |
a02abb62 | 15692 | { |
0963b4bd MS |
15693 | /* The range type was succesfully read. Save it for the |
15694 | array type creation. */ | |
791afaa2 | 15695 | range_types.push_back (child_type); |
a02abb62 | 15696 | } |
c906108c | 15697 | } |
436c571c | 15698 | child_die = child_die->sibling; |
c906108c SS |
15699 | } |
15700 | ||
15701 | /* Dwarf2 dimensions are output from left to right, create the | |
15702 | necessary array types in backwards order. */ | |
7ca2d3a3 | 15703 | |
c906108c | 15704 | type = element_type; |
7ca2d3a3 DL |
15705 | |
15706 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
15707 | { | |
15708 | int i = 0; | |
9a619af0 | 15709 | |
791afaa2 | 15710 | while (i < range_types.size ()) |
dc53a7ad | 15711 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 15712 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
15713 | } |
15714 | else | |
15715 | { | |
791afaa2 | 15716 | size_t ndim = range_types.size (); |
7ca2d3a3 | 15717 | while (ndim-- > 0) |
dc53a7ad | 15718 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 15719 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 15720 | } |
c906108c | 15721 | |
f5f8a009 EZ |
15722 | /* Understand Dwarf2 support for vector types (like they occur on |
15723 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
15724 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
15725 | custom vendor extension. The main difference between a regular | |
15726 | array and the vector variant is that vectors are passed by value | |
15727 | to functions. */ | |
e142c38c | 15728 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 15729 | if (attr != nullptr) |
ea37ba09 | 15730 | make_vector_type (type); |
f5f8a009 | 15731 | |
dbc98a8b KW |
15732 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
15733 | implementation may choose to implement triple vectors using this | |
15734 | attribute. */ | |
15735 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 15736 | if (attr != nullptr) |
dbc98a8b KW |
15737 | { |
15738 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
15739 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
15740 | else | |
b98664d3 | 15741 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 15742 | "than the total size of elements")); |
dbc98a8b KW |
15743 | } |
15744 | ||
39cbfefa DJ |
15745 | name = dwarf2_name (die, cu); |
15746 | if (name) | |
15747 | TYPE_NAME (type) = name; | |
6e70227d | 15748 | |
2b4424c3 TT |
15749 | maybe_set_alignment (cu, die, type); |
15750 | ||
0963b4bd | 15751 | /* Install the type in the die. */ |
7e314c57 JK |
15752 | set_die_type (die, type, cu); |
15753 | ||
15754 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
15755 | set_descriptive_type (type, die, cu); |
15756 | ||
7e314c57 | 15757 | return type; |
c906108c SS |
15758 | } |
15759 | ||
7ca2d3a3 | 15760 | static enum dwarf_array_dim_ordering |
6e70227d | 15761 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
15762 | { |
15763 | struct attribute *attr; | |
15764 | ||
15765 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
15766 | ||
435d3d88 | 15767 | if (attr != nullptr) |
aead7601 | 15768 | return (enum dwarf_array_dim_ordering) DW_SND (attr); |
7ca2d3a3 | 15769 | |
0963b4bd MS |
15770 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
15771 | opposite order to the dwarf2 specification, but data is still | |
15772 | laid out as per normal fortran. | |
7ca2d3a3 | 15773 | |
0963b4bd MS |
15774 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
15775 | version checking. */ | |
7ca2d3a3 | 15776 | |
905e0470 PM |
15777 | if (cu->language == language_fortran |
15778 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
15779 | { |
15780 | return DW_ORD_row_major; | |
15781 | } | |
15782 | ||
6e70227d | 15783 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
15784 | { |
15785 | case array_column_major: | |
15786 | return DW_ORD_col_major; | |
15787 | case array_row_major: | |
15788 | default: | |
15789 | return DW_ORD_row_major; | |
15790 | }; | |
15791 | } | |
15792 | ||
72019c9c | 15793 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 15794 | the DIE's type field. */ |
72019c9c | 15795 | |
f792889a | 15796 | static struct type * |
72019c9c GM |
15797 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
15798 | { | |
7e314c57 JK |
15799 | struct type *domain_type, *set_type; |
15800 | struct attribute *attr; | |
f792889a | 15801 | |
7e314c57 JK |
15802 | domain_type = die_type (die, cu); |
15803 | ||
15804 | /* The die_type call above may have already set the type for this DIE. */ | |
15805 | set_type = get_die_type (die, cu); | |
15806 | if (set_type) | |
15807 | return set_type; | |
15808 | ||
15809 | set_type = create_set_type (NULL, domain_type); | |
15810 | ||
15811 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 15812 | if (attr != nullptr) |
d09039dd | 15813 | TYPE_LENGTH (set_type) = DW_UNSND (attr); |
7e314c57 | 15814 | |
2b4424c3 TT |
15815 | maybe_set_alignment (cu, die, set_type); |
15816 | ||
f792889a | 15817 | return set_die_type (die, set_type, cu); |
72019c9c | 15818 | } |
7ca2d3a3 | 15819 | |
0971de02 TT |
15820 | /* A helper for read_common_block that creates a locexpr baton. |
15821 | SYM is the symbol which we are marking as computed. | |
15822 | COMMON_DIE is the DIE for the common block. | |
15823 | COMMON_LOC is the location expression attribute for the common | |
15824 | block itself. | |
15825 | MEMBER_LOC is the location expression attribute for the particular | |
15826 | member of the common block that we are processing. | |
15827 | CU is the CU from which the above come. */ | |
15828 | ||
15829 | static void | |
15830 | mark_common_block_symbol_computed (struct symbol *sym, | |
15831 | struct die_info *common_die, | |
15832 | struct attribute *common_loc, | |
15833 | struct attribute *member_loc, | |
15834 | struct dwarf2_cu *cu) | |
15835 | { | |
518817b3 SM |
15836 | struct dwarf2_per_objfile *dwarf2_per_objfile |
15837 | = cu->per_cu->dwarf2_per_objfile; | |
0971de02 TT |
15838 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
15839 | struct dwarf2_locexpr_baton *baton; | |
15840 | gdb_byte *ptr; | |
15841 | unsigned int cu_off; | |
15842 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
15843 | LONGEST offset = 0; | |
15844 | ||
15845 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
15846 | gdb_assert (common_loc->form_is_block ()); |
15847 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 15848 | || member_loc->form_is_constant ()); |
0971de02 | 15849 | |
8d749320 | 15850 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
0971de02 TT |
15851 | baton->per_cu = cu->per_cu; |
15852 | gdb_assert (baton->per_cu); | |
15853 | ||
15854 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
15855 | ||
cd6c91b4 | 15856 | if (member_loc->form_is_constant ()) |
0971de02 | 15857 | { |
0826b30a | 15858 | offset = member_loc->constant_value (0); |
0971de02 TT |
15859 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; |
15860 | } | |
15861 | else | |
15862 | baton->size += DW_BLOCK (member_loc)->size; | |
15863 | ||
224c3ddb | 15864 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
15865 | baton->data = ptr; |
15866 | ||
15867 | *ptr++ = DW_OP_call4; | |
9c541725 | 15868 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
15869 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
15870 | ptr += 4; | |
15871 | ||
cd6c91b4 | 15872 | if (member_loc->form_is_constant ()) |
0971de02 TT |
15873 | { |
15874 | *ptr++ = DW_OP_addr; | |
15875 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
15876 | ptr += cu->header.addr_size; | |
15877 | } | |
15878 | else | |
15879 | { | |
15880 | /* We have to copy the data here, because DW_OP_call4 will only | |
15881 | use a DW_AT_location attribute. */ | |
15882 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
15883 | ptr += DW_BLOCK (member_loc)->size; | |
15884 | } | |
15885 | ||
15886 | *ptr++ = DW_OP_plus; | |
15887 | gdb_assert (ptr - baton->data == baton->size); | |
15888 | ||
0971de02 | 15889 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 15890 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
15891 | } |
15892 | ||
4357ac6c TT |
15893 | /* Create appropriate locally-scoped variables for all the |
15894 | DW_TAG_common_block entries. Also create a struct common_block | |
15895 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 15896 | is used to separate the common blocks name namespace from regular |
4357ac6c | 15897 | variable names. */ |
c906108c SS |
15898 | |
15899 | static void | |
e7c27a73 | 15900 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15901 | { |
0971de02 TT |
15902 | struct attribute *attr; |
15903 | ||
15904 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 15905 | if (attr != nullptr) |
0971de02 TT |
15906 | { |
15907 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 15908 | if (attr->form_is_block ()) |
0971de02 TT |
15909 | { |
15910 | /* Ok. */ | |
15911 | } | |
cd6c91b4 | 15912 | else if (attr->form_is_section_offset ()) |
0971de02 TT |
15913 | { |
15914 | dwarf2_complex_location_expr_complaint (); | |
15915 | attr = NULL; | |
15916 | } | |
15917 | else | |
15918 | { | |
15919 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
15920 | "common block member"); | |
15921 | attr = NULL; | |
15922 | } | |
15923 | } | |
15924 | ||
639d11d3 | 15925 | if (die->child != NULL) |
c906108c | 15926 | { |
518817b3 | 15927 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
4357ac6c TT |
15928 | struct die_info *child_die; |
15929 | size_t n_entries = 0, size; | |
15930 | struct common_block *common_block; | |
15931 | struct symbol *sym; | |
74ac6d43 | 15932 | |
4357ac6c TT |
15933 | for (child_die = die->child; |
15934 | child_die && child_die->tag; | |
436c571c | 15935 | child_die = child_die->sibling) |
4357ac6c TT |
15936 | ++n_entries; |
15937 | ||
15938 | size = (sizeof (struct common_block) | |
15939 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
15940 | common_block |
15941 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
15942 | size); | |
4357ac6c TT |
15943 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
15944 | common_block->n_entries = 0; | |
15945 | ||
15946 | for (child_die = die->child; | |
15947 | child_die && child_die->tag; | |
436c571c | 15948 | child_die = child_die->sibling) |
4357ac6c TT |
15949 | { |
15950 | /* Create the symbol in the DW_TAG_common_block block in the current | |
15951 | symbol scope. */ | |
e7c27a73 | 15952 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
15953 | if (sym != NULL) |
15954 | { | |
15955 | struct attribute *member_loc; | |
15956 | ||
15957 | common_block->contents[common_block->n_entries++] = sym; | |
15958 | ||
15959 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
15960 | cu); | |
15961 | if (member_loc) | |
15962 | { | |
15963 | /* GDB has handled this for a long time, but it is | |
15964 | not specified by DWARF. It seems to have been | |
15965 | emitted by gfortran at least as recently as: | |
15966 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 15967 | complaint (_("Variable in common block has " |
0971de02 | 15968 | "DW_AT_data_member_location " |
9d8780f0 SM |
15969 | "- DIE at %s [in module %s]"), |
15970 | sect_offset_str (child_die->sect_off), | |
518817b3 | 15971 | objfile_name (objfile)); |
0971de02 | 15972 | |
cd6c91b4 | 15973 | if (member_loc->form_is_section_offset ()) |
0971de02 | 15974 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 15975 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 15976 | || member_loc->form_is_block ()) |
0971de02 | 15977 | { |
435d3d88 | 15978 | if (attr != nullptr) |
0971de02 TT |
15979 | mark_common_block_symbol_computed (sym, die, attr, |
15980 | member_loc, cu); | |
15981 | } | |
15982 | else | |
15983 | dwarf2_complex_location_expr_complaint (); | |
15984 | } | |
15985 | } | |
c906108c | 15986 | } |
4357ac6c TT |
15987 | |
15988 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
15989 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
15990 | } |
15991 | } | |
15992 | ||
0114d602 | 15993 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 15994 | |
0114d602 DJ |
15995 | static struct type * |
15996 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 15997 | { |
518817b3 | 15998 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 15999 | const char *previous_prefix, *name; |
9219021c | 16000 | int is_anonymous; |
0114d602 DJ |
16001 | struct type *type; |
16002 | ||
16003 | /* For extensions, reuse the type of the original namespace. */ | |
16004 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16005 | { | |
16006 | struct die_info *ext_die; | |
16007 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16008 | |
0114d602 DJ |
16009 | ext_die = dwarf2_extension (die, &ext_cu); |
16010 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16011 | |
16012 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16013 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16014 | return set_die_type (die, type, cu); |
16015 | } | |
9219021c | 16016 | |
e142c38c | 16017 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16018 | |
16019 | /* Now build the name of the current namespace. */ | |
16020 | ||
0114d602 DJ |
16021 | previous_prefix = determine_prefix (die, cu); |
16022 | if (previous_prefix[0] != '\0') | |
16023 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16024 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16025 | |
16026 | /* Create the type. */ | |
19f392bc | 16027 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 16028 | |
60531b24 | 16029 | return set_die_type (die, type, cu); |
0114d602 DJ |
16030 | } |
16031 | ||
22cee43f | 16032 | /* Read a namespace scope. */ |
0114d602 DJ |
16033 | |
16034 | static void | |
16035 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16036 | { | |
518817b3 | 16037 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16038 | int is_anonymous; |
9219021c | 16039 | |
5c4e30ca DC |
16040 | /* Add a symbol associated to this if we haven't seen the namespace |
16041 | before. Also, add a using directive if it's an anonymous | |
16042 | namespace. */ | |
9219021c | 16043 | |
f2f0e013 | 16044 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16045 | { |
16046 | struct type *type; | |
16047 | ||
0114d602 | 16048 | type = read_type_die (die, cu); |
e7c27a73 | 16049 | new_symbol (die, type, cu); |
5c4e30ca | 16050 | |
e8e80198 | 16051 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16052 | if (is_anonymous) |
0114d602 DJ |
16053 | { |
16054 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16055 | |
eb1e02fd | 16056 | std::vector<const char *> excludes; |
804d2729 | 16057 | add_using_directive (using_directives (cu), |
22cee43f | 16058 | previous_prefix, TYPE_NAME (type), NULL, |
eb1e02fd | 16059 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16060 | } |
5c4e30ca | 16061 | } |
9219021c | 16062 | |
639d11d3 | 16063 | if (die->child != NULL) |
d9fa45fe | 16064 | { |
639d11d3 | 16065 | struct die_info *child_die = die->child; |
6e70227d | 16066 | |
d9fa45fe DC |
16067 | while (child_die && child_die->tag) |
16068 | { | |
e7c27a73 | 16069 | process_die (child_die, cu); |
436c571c | 16070 | child_die = child_die->sibling; |
d9fa45fe DC |
16071 | } |
16072 | } | |
38d518c9 EZ |
16073 | } |
16074 | ||
f55ee35c JK |
16075 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16076 | imported module. Still we need that type as local Fortran "use ... only" | |
16077 | declaration imports depend on the created type in determine_prefix. */ | |
16078 | ||
16079 | static struct type * | |
16080 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16081 | { | |
518817b3 | 16082 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
15d034d0 | 16083 | const char *module_name; |
f55ee35c JK |
16084 | struct type *type; |
16085 | ||
16086 | module_name = dwarf2_name (die, cu); | |
19f392bc | 16087 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 16088 | |
f55ee35c JK |
16089 | return set_die_type (die, type, cu); |
16090 | } | |
16091 | ||
5d7cb8df JK |
16092 | /* Read a Fortran module. */ |
16093 | ||
16094 | static void | |
16095 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
16096 | { | |
16097 | struct die_info *child_die = die->child; | |
530e8392 KB |
16098 | struct type *type; |
16099 | ||
16100 | type = read_type_die (die, cu); | |
16101 | new_symbol (die, type, cu); | |
5d7cb8df | 16102 | |
5d7cb8df JK |
16103 | while (child_die && child_die->tag) |
16104 | { | |
16105 | process_die (child_die, cu); | |
436c571c | 16106 | child_die = child_die->sibling; |
5d7cb8df JK |
16107 | } |
16108 | } | |
16109 | ||
38d518c9 EZ |
16110 | /* Return the name of the namespace represented by DIE. Set |
16111 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
16112 | namespace. */ | |
16113 | ||
16114 | static const char * | |
e142c38c | 16115 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
16116 | { |
16117 | struct die_info *current_die; | |
16118 | const char *name = NULL; | |
16119 | ||
16120 | /* Loop through the extensions until we find a name. */ | |
16121 | ||
16122 | for (current_die = die; | |
16123 | current_die != NULL; | |
f2f0e013 | 16124 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 16125 | { |
96553a0c DE |
16126 | /* We don't use dwarf2_name here so that we can detect the absence |
16127 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 16128 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 16129 | |
38d518c9 EZ |
16130 | if (name != NULL) |
16131 | break; | |
16132 | } | |
16133 | ||
16134 | /* Is it an anonymous namespace? */ | |
16135 | ||
16136 | *is_anonymous = (name == NULL); | |
16137 | if (*is_anonymous) | |
2b1dbab0 | 16138 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
16139 | |
16140 | return name; | |
d9fa45fe DC |
16141 | } |
16142 | ||
c906108c SS |
16143 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
16144 | the user defined type vector. */ | |
16145 | ||
f792889a | 16146 | static struct type * |
e7c27a73 | 16147 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16148 | { |
518817b3 SM |
16149 | struct gdbarch *gdbarch |
16150 | = get_objfile_arch (cu->per_cu->dwarf2_per_objfile->objfile); | |
e7c27a73 | 16151 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 16152 | struct type *type; |
8b2dbe47 KB |
16153 | struct attribute *attr_byte_size; |
16154 | struct attribute *attr_address_class; | |
16155 | int byte_size, addr_class; | |
7e314c57 JK |
16156 | struct type *target_type; |
16157 | ||
16158 | target_type = die_type (die, cu); | |
c906108c | 16159 | |
7e314c57 JK |
16160 | /* The die_type call above may have already set the type for this DIE. */ |
16161 | type = get_die_type (die, cu); | |
16162 | if (type) | |
16163 | return type; | |
16164 | ||
16165 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 16166 | |
e142c38c | 16167 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
16168 | if (attr_byte_size) |
16169 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 16170 | else |
8b2dbe47 KB |
16171 | byte_size = cu_header->addr_size; |
16172 | ||
e142c38c | 16173 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
16174 | if (attr_address_class) |
16175 | addr_class = DW_UNSND (attr_address_class); | |
16176 | else | |
16177 | addr_class = DW_ADDR_none; | |
16178 | ||
2b4424c3 TT |
16179 | ULONGEST alignment = get_alignment (cu, die); |
16180 | ||
16181 | /* If the pointer size, alignment, or address class is different | |
16182 | than the default, create a type variant marked as such and set | |
16183 | the length accordingly. */ | |
16184 | if (TYPE_LENGTH (type) != byte_size | |
16185 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
16186 | && alignment != TYPE_RAW_ALIGN (type)) | |
16187 | || addr_class != DW_ADDR_none) | |
c906108c | 16188 | { |
5e2b427d | 16189 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
16190 | { |
16191 | int type_flags; | |
16192 | ||
849957d9 | 16193 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 16194 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
16195 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
16196 | == 0); | |
8b2dbe47 KB |
16197 | type = make_type_with_address_space (type, type_flags); |
16198 | } | |
16199 | else if (TYPE_LENGTH (type) != byte_size) | |
16200 | { | |
b98664d3 | 16201 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 16202 | } |
2b4424c3 TT |
16203 | else if (TYPE_RAW_ALIGN (type) != alignment) |
16204 | { | |
b98664d3 | 16205 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
16206 | " - DIE at %s [in module %s]"), |
16207 | sect_offset_str (die->sect_off), | |
16208 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
16209 | } | |
6e70227d | 16210 | else |
9a619af0 MS |
16211 | { |
16212 | /* Should we also complain about unhandled address classes? */ | |
16213 | } | |
c906108c | 16214 | } |
8b2dbe47 KB |
16215 | |
16216 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 16217 | set_type_align (type, alignment); |
f792889a | 16218 | return set_die_type (die, type, cu); |
c906108c SS |
16219 | } |
16220 | ||
16221 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
16222 | the user defined type vector. */ | |
16223 | ||
f792889a | 16224 | static struct type * |
e7c27a73 | 16225 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
16226 | { |
16227 | struct type *type; | |
16228 | struct type *to_type; | |
16229 | struct type *domain; | |
16230 | ||
e7c27a73 DJ |
16231 | to_type = die_type (die, cu); |
16232 | domain = die_containing_type (die, cu); | |
0d5de010 | 16233 | |
7e314c57 JK |
16234 | /* The calls above may have already set the type for this DIE. */ |
16235 | type = get_die_type (die, cu); | |
16236 | if (type) | |
16237 | return type; | |
16238 | ||
0d5de010 DJ |
16239 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
16240 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
16241 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
16242 | { | |
518817b3 SM |
16243 | struct type *new_type |
16244 | = alloc_type (cu->per_cu->dwarf2_per_objfile->objfile); | |
7078baeb TT |
16245 | |
16246 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
16247 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
16248 | TYPE_VARARGS (to_type)); | |
16249 | type = lookup_methodptr_type (new_type); | |
16250 | } | |
0d5de010 DJ |
16251 | else |
16252 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 16253 | |
f792889a | 16254 | return set_die_type (die, type, cu); |
c906108c SS |
16255 | } |
16256 | ||
4297a3f0 | 16257 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
16258 | the user defined type vector. */ |
16259 | ||
f792889a | 16260 | static struct type * |
4297a3f0 AV |
16261 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
16262 | enum type_code refcode) | |
c906108c | 16263 | { |
e7c27a73 | 16264 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 16265 | struct type *type, *target_type; |
c906108c SS |
16266 | struct attribute *attr; |
16267 | ||
4297a3f0 AV |
16268 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
16269 | ||
7e314c57 JK |
16270 | target_type = die_type (die, cu); |
16271 | ||
16272 | /* The die_type call above may have already set the type for this DIE. */ | |
16273 | type = get_die_type (die, cu); | |
16274 | if (type) | |
16275 | return type; | |
16276 | ||
4297a3f0 | 16277 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 16278 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16279 | if (attr != nullptr) |
c906108c SS |
16280 | { |
16281 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16282 | } | |
16283 | else | |
16284 | { | |
107d2387 | 16285 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 16286 | } |
2b4424c3 | 16287 | maybe_set_alignment (cu, die, type); |
f792889a | 16288 | return set_die_type (die, type, cu); |
c906108c SS |
16289 | } |
16290 | ||
cf363f18 MW |
16291 | /* Add the given cv-qualifiers to the element type of the array. GCC |
16292 | outputs DWARF type qualifiers that apply to an array, not the | |
16293 | element type. But GDB relies on the array element type to carry | |
16294 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
16295 | specification. */ | |
16296 | ||
16297 | static struct type * | |
16298 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
16299 | struct type *base_type, int cnst, int voltl) | |
16300 | { | |
16301 | struct type *el_type, *inner_array; | |
16302 | ||
16303 | base_type = copy_type (base_type); | |
16304 | inner_array = base_type; | |
16305 | ||
16306 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
16307 | { | |
16308 | TYPE_TARGET_TYPE (inner_array) = | |
16309 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
16310 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
16311 | } | |
16312 | ||
16313 | el_type = TYPE_TARGET_TYPE (inner_array); | |
16314 | cnst |= TYPE_CONST (el_type); | |
16315 | voltl |= TYPE_VOLATILE (el_type); | |
16316 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
16317 | ||
16318 | return set_die_type (die, base_type, cu); | |
16319 | } | |
16320 | ||
f792889a | 16321 | static struct type * |
e7c27a73 | 16322 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16323 | { |
f792889a | 16324 | struct type *base_type, *cv_type; |
c906108c | 16325 | |
e7c27a73 | 16326 | base_type = die_type (die, cu); |
7e314c57 JK |
16327 | |
16328 | /* The die_type call above may have already set the type for this DIE. */ | |
16329 | cv_type = get_die_type (die, cu); | |
16330 | if (cv_type) | |
16331 | return cv_type; | |
16332 | ||
2f608a3a KW |
16333 | /* In case the const qualifier is applied to an array type, the element type |
16334 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
16335 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 16336 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 16337 | |
f792889a DJ |
16338 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
16339 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16340 | } |
16341 | ||
f792889a | 16342 | static struct type * |
e7c27a73 | 16343 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16344 | { |
f792889a | 16345 | struct type *base_type, *cv_type; |
c906108c | 16346 | |
e7c27a73 | 16347 | base_type = die_type (die, cu); |
7e314c57 JK |
16348 | |
16349 | /* The die_type call above may have already set the type for this DIE. */ | |
16350 | cv_type = get_die_type (die, cu); | |
16351 | if (cv_type) | |
16352 | return cv_type; | |
16353 | ||
cf363f18 MW |
16354 | /* In case the volatile qualifier is applied to an array type, the |
16355 | element type is so qualified, not the array type (section 6.7.3 | |
16356 | of C99). */ | |
16357 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
16358 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
16359 | ||
f792889a DJ |
16360 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
16361 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16362 | } |
16363 | ||
06d66ee9 TT |
16364 | /* Handle DW_TAG_restrict_type. */ |
16365 | ||
16366 | static struct type * | |
16367 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
16368 | { | |
16369 | struct type *base_type, *cv_type; | |
16370 | ||
16371 | base_type = die_type (die, cu); | |
16372 | ||
16373 | /* The die_type call above may have already set the type for this DIE. */ | |
16374 | cv_type = get_die_type (die, cu); | |
16375 | if (cv_type) | |
16376 | return cv_type; | |
16377 | ||
16378 | cv_type = make_restrict_type (base_type); | |
16379 | return set_die_type (die, cv_type, cu); | |
16380 | } | |
16381 | ||
a2c2acaf MW |
16382 | /* Handle DW_TAG_atomic_type. */ |
16383 | ||
16384 | static struct type * | |
16385 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
16386 | { | |
16387 | struct type *base_type, *cv_type; | |
16388 | ||
16389 | base_type = die_type (die, cu); | |
16390 | ||
16391 | /* The die_type call above may have already set the type for this DIE. */ | |
16392 | cv_type = get_die_type (die, cu); | |
16393 | if (cv_type) | |
16394 | return cv_type; | |
16395 | ||
16396 | cv_type = make_atomic_type (base_type); | |
16397 | return set_die_type (die, cv_type, cu); | |
16398 | } | |
16399 | ||
c906108c SS |
16400 | /* Extract all information from a DW_TAG_string_type DIE and add to |
16401 | the user defined type vector. It isn't really a user defined type, | |
16402 | but it behaves like one, with other DIE's using an AT_user_def_type | |
16403 | attribute to reference it. */ | |
16404 | ||
f792889a | 16405 | static struct type * |
e7c27a73 | 16406 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16407 | { |
518817b3 | 16408 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3b7538c0 | 16409 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
16410 | struct type *type, *range_type, *index_type, *char_type; |
16411 | struct attribute *attr; | |
216a7e6b AB |
16412 | struct dynamic_prop prop; |
16413 | bool length_is_constant = true; | |
16414 | LONGEST length; | |
16415 | ||
16416 | /* There are a couple of places where bit sizes might be made use of | |
16417 | when parsing a DW_TAG_string_type, however, no producer that we know | |
16418 | of make use of these. Handling bit sizes that are a multiple of the | |
16419 | byte size is easy enough, but what about other bit sizes? Lets deal | |
16420 | with that problem when we have to. Warn about these attributes being | |
16421 | unsupported, then parse the type and ignore them like we always | |
16422 | have. */ | |
16423 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
16424 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
16425 | { | |
16426 | static bool warning_printed = false; | |
16427 | if (!warning_printed) | |
16428 | { | |
16429 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
16430 | "currently supported on DW_TAG_string_type.")); | |
16431 | warning_printed = true; | |
16432 | } | |
16433 | } | |
c906108c | 16434 | |
e142c38c | 16435 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 16436 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
16437 | { |
16438 | /* The string length describes the location at which the length of | |
16439 | the string can be found. The size of the length field can be | |
16440 | specified with one of the attributes below. */ | |
16441 | struct type *prop_type; | |
16442 | struct attribute *len | |
16443 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
16444 | if (len == nullptr) | |
16445 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 16446 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
16447 | { |
16448 | /* Pass 0 as the default as we know this attribute is constant | |
16449 | and the default value will not be returned. */ | |
0826b30a | 16450 | LONGEST sz = len->constant_value (0); |
09ba997f | 16451 | prop_type = cu->per_cu->int_type (sz, true); |
216a7e6b AB |
16452 | } |
16453 | else | |
16454 | { | |
16455 | /* If the size is not specified then we assume it is the size of | |
16456 | an address on this target. */ | |
09ba997f | 16457 | prop_type = cu->per_cu->addr_sized_int_type (true); |
216a7e6b AB |
16458 | } |
16459 | ||
16460 | /* Convert the attribute into a dynamic property. */ | |
16461 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
16462 | length = 1; | |
16463 | else | |
16464 | length_is_constant = false; | |
16465 | } | |
16466 | else if (attr != nullptr) | |
16467 | { | |
16468 | /* This DW_AT_string_length just contains the length with no | |
16469 | indirection. There's no need to create a dynamic property in this | |
16470 | case. Pass 0 for the default value as we know it will not be | |
16471 | returned in this case. */ | |
0826b30a | 16472 | length = attr->constant_value (0); |
216a7e6b AB |
16473 | } |
16474 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 16475 | { |
216a7e6b | 16476 | /* We don't currently support non-constant byte sizes for strings. */ |
0826b30a | 16477 | length = attr->constant_value (1); |
c906108c SS |
16478 | } |
16479 | else | |
16480 | { | |
216a7e6b AB |
16481 | /* Use 1 as a fallback length if we have nothing else. */ |
16482 | length = 1; | |
c906108c | 16483 | } |
6ccb9162 | 16484 | |
46bf5051 | 16485 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
16486 | if (length_is_constant) |
16487 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
16488 | else | |
16489 | { | |
16490 | struct dynamic_prop low_bound; | |
16491 | ||
16492 | low_bound.kind = PROP_CONST; | |
16493 | low_bound.data.const_val = 1; | |
16494 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); | |
16495 | } | |
3b7538c0 UW |
16496 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
16497 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 16498 | |
f792889a | 16499 | return set_die_type (die, type, cu); |
c906108c SS |
16500 | } |
16501 | ||
4d804846 JB |
16502 | /* Assuming that DIE corresponds to a function, returns nonzero |
16503 | if the function is prototyped. */ | |
16504 | ||
16505 | static int | |
16506 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
16507 | { | |
16508 | struct attribute *attr; | |
16509 | ||
16510 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
16511 | if (attr && (DW_UNSND (attr) != 0)) | |
16512 | return 1; | |
16513 | ||
16514 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 16515 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
16516 | languages that allow unprototyped functions (Eg: Objective C). |
16517 | For all other languages, assume that functions are always | |
16518 | prototyped. */ | |
16519 | if (cu->language != language_c | |
16520 | && cu->language != language_objc | |
16521 | && cu->language != language_opencl) | |
16522 | return 1; | |
16523 | ||
16524 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
16525 | prototyped and unprototyped functions; default to prototyped, | |
16526 | since that is more common in modern code (and RealView warns | |
16527 | about unprototyped functions). */ | |
16528 | if (producer_is_realview (cu->producer)) | |
16529 | return 1; | |
16530 | ||
16531 | return 0; | |
16532 | } | |
16533 | ||
c906108c SS |
16534 | /* Handle DIES due to C code like: |
16535 | ||
16536 | struct foo | |
c5aa993b JM |
16537 | { |
16538 | int (*funcp)(int a, long l); | |
16539 | int b; | |
16540 | }; | |
c906108c | 16541 | |
0963b4bd | 16542 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 16543 | |
f792889a | 16544 | static struct type * |
e7c27a73 | 16545 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16546 | { |
518817b3 | 16547 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0963b4bd MS |
16548 | struct type *type; /* Type that this function returns. */ |
16549 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
16550 | struct attribute *attr; |
16551 | ||
e7c27a73 | 16552 | type = die_type (die, cu); |
7e314c57 JK |
16553 | |
16554 | /* The die_type call above may have already set the type for this DIE. */ | |
16555 | ftype = get_die_type (die, cu); | |
16556 | if (ftype) | |
16557 | return ftype; | |
16558 | ||
0c8b41f1 | 16559 | ftype = lookup_function_type (type); |
c906108c | 16560 | |
4d804846 | 16561 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 16562 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 16563 | |
c055b101 CV |
16564 | /* Store the calling convention in the type if it's available in |
16565 | the subroutine die. Otherwise set the calling convention to | |
16566 | the default value DW_CC_normal. */ | |
16567 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf TBA |
16568 | if (attr != nullptr |
16569 | && is_valid_DW_AT_calling_convention_for_subroutine (DW_UNSND (attr))) | |
16570 | TYPE_CALLING_CONVENTION (ftype) | |
16571 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
54fcddd0 UW |
16572 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
16573 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
16574 | else | |
16575 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 16576 | |
743649fd MW |
16577 | /* Record whether the function returns normally to its caller or not |
16578 | if the DWARF producer set that information. */ | |
16579 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
16580 | if (attr && (DW_UNSND (attr) != 0)) | |
16581 | TYPE_NO_RETURN (ftype) = 1; | |
16582 | ||
76c10ea2 GM |
16583 | /* We need to add the subroutine type to the die immediately so |
16584 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 16585 | declared as the same subroutine type. */ |
76c10ea2 | 16586 | set_die_type (die, ftype, cu); |
6e70227d | 16587 | |
639d11d3 | 16588 | if (die->child != NULL) |
c906108c | 16589 | { |
bb5ed363 | 16590 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 16591 | struct die_info *child_die; |
8072405b | 16592 | int nparams, iparams; |
c906108c SS |
16593 | |
16594 | /* Count the number of parameters. | |
16595 | FIXME: GDB currently ignores vararg functions, but knows about | |
16596 | vararg member functions. */ | |
8072405b | 16597 | nparams = 0; |
639d11d3 | 16598 | child_die = die->child; |
c906108c SS |
16599 | while (child_die && child_die->tag) |
16600 | { | |
16601 | if (child_die->tag == DW_TAG_formal_parameter) | |
16602 | nparams++; | |
16603 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 16604 | TYPE_VARARGS (ftype) = 1; |
436c571c | 16605 | child_die = child_die->sibling; |
c906108c SS |
16606 | } |
16607 | ||
16608 | /* Allocate storage for parameters and fill them in. */ | |
16609 | TYPE_NFIELDS (ftype) = nparams; | |
16610 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 16611 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 16612 | |
8072405b JK |
16613 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
16614 | even if we error out during the parameters reading below. */ | |
16615 | for (iparams = 0; iparams < nparams; iparams++) | |
16616 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
16617 | ||
16618 | iparams = 0; | |
639d11d3 | 16619 | child_die = die->child; |
c906108c SS |
16620 | while (child_die && child_die->tag) |
16621 | { | |
16622 | if (child_die->tag == DW_TAG_formal_parameter) | |
16623 | { | |
3ce3b1ba PA |
16624 | struct type *arg_type; |
16625 | ||
16626 | /* DWARF version 2 has no clean way to discern C++ | |
16627 | static and non-static member functions. G++ helps | |
16628 | GDB by marking the first parameter for non-static | |
16629 | member functions (which is the this pointer) as | |
16630 | artificial. We pass this information to | |
16631 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
16632 | ||
16633 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
16634 | 4.5 does not yet generate. */ | |
e142c38c | 16635 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 16636 | if (attr != nullptr) |
c906108c SS |
16637 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); |
16638 | else | |
9c37b5ae | 16639 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
16640 | arg_type = die_type (child_die, cu); |
16641 | ||
16642 | /* RealView does not mark THIS as const, which the testsuite | |
16643 | expects. GCC marks THIS as const in method definitions, | |
16644 | but not in the class specifications (GCC PR 43053). */ | |
16645 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
16646 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
16647 | { | |
16648 | int is_this = 0; | |
16649 | struct dwarf2_cu *arg_cu = cu; | |
16650 | const char *name = dwarf2_name (child_die, cu); | |
16651 | ||
16652 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 16653 | if (attr != nullptr) |
3ce3b1ba PA |
16654 | { |
16655 | /* If the compiler emits this, use it. */ | |
16656 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
16657 | is_this = 1; | |
16658 | } | |
16659 | else if (name && strcmp (name, "this") == 0) | |
16660 | /* Function definitions will have the argument names. */ | |
16661 | is_this = 1; | |
16662 | else if (name == NULL && iparams == 0) | |
16663 | /* Declarations may not have the names, so like | |
16664 | elsewhere in GDB, assume an artificial first | |
16665 | argument is "this". */ | |
16666 | is_this = 1; | |
16667 | ||
16668 | if (is_this) | |
16669 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
16670 | arg_type, 0); | |
16671 | } | |
16672 | ||
16673 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
16674 | iparams++; |
16675 | } | |
436c571c | 16676 | child_die = child_die->sibling; |
c906108c SS |
16677 | } |
16678 | } | |
16679 | ||
76c10ea2 | 16680 | return ftype; |
c906108c SS |
16681 | } |
16682 | ||
f792889a | 16683 | static struct type * |
e7c27a73 | 16684 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16685 | { |
518817b3 | 16686 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16687 | const char *name = NULL; |
3c8e0968 | 16688 | struct type *this_type, *target_type; |
c906108c | 16689 | |
94af9270 | 16690 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
16691 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
16692 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 16693 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
16694 | target_type = die_type (die, cu); |
16695 | if (target_type != this_type) | |
16696 | TYPE_TARGET_TYPE (this_type) = target_type; | |
16697 | else | |
16698 | { | |
16699 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
16700 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 16701 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
16702 | "- DIE at %s [in module %s]"), |
16703 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
16704 | TYPE_TARGET_TYPE (this_type) = NULL; |
16705 | } | |
e4003a34 TV |
16706 | if (name == NULL) |
16707 | { | |
16708 | /* Gcc-7 and before supports -feliminate-dwarf2-dups, which generates | |
16709 | anonymous typedefs, which is, strictly speaking, invalid DWARF. | |
16710 | Handle these by just returning the target type, rather than | |
16711 | constructing an anonymous typedef type and trying to handle this | |
16712 | elsewhere. */ | |
16713 | set_die_type (die, target_type, cu); | |
16714 | return target_type; | |
16715 | } | |
f792889a | 16716 | return this_type; |
c906108c SS |
16717 | } |
16718 | ||
9b790ce7 UW |
16719 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
16720 | (which may be different from NAME) to the architecture back-end to allow | |
16721 | it to guess the correct format if necessary. */ | |
16722 | ||
16723 | static struct type * | |
16724 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 16725 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 UW |
16726 | { |
16727 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
16728 | const struct floatformat **format; | |
16729 | struct type *type; | |
16730 | ||
16731 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
16732 | if (format) | |
103a685e | 16733 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 16734 | else |
77b7c781 | 16735 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
16736 | |
16737 | return type; | |
16738 | } | |
16739 | ||
eb77c9df AB |
16740 | /* Allocate an integer type of size BITS and name NAME. */ |
16741 | ||
16742 | static struct type * | |
16743 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
16744 | int bits, int unsigned_p, const char *name) | |
16745 | { | |
16746 | struct type *type; | |
16747 | ||
16748 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
16749 | instead of using DW_TAG_unspecified_type. This has been seen on | |
16750 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
16751 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
16752 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
16753 | type = objfile_type (objfile)->builtin_void; |
16754 | else | |
16755 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
16756 | ||
16757 | return type; | |
16758 | } | |
16759 | ||
8bdc1658 AB |
16760 | /* Initialise and return a floating point type of size BITS suitable for |
16761 | use as a component of a complex number. The NAME_HINT is passed through | |
16762 | when initialising the floating point type and is the name of the complex | |
16763 | type. | |
16764 | ||
16765 | As DWARF doesn't currently provide an explicit name for the components | |
16766 | of a complex number, but it can be helpful to have these components | |
16767 | named, we try to select a suitable name based on the size of the | |
16768 | component. */ | |
16769 | static struct type * | |
16770 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
16771 | struct objfile *objfile, | |
103a685e TT |
16772 | int bits, const char *name_hint, |
16773 | enum bfd_endian byte_order) | |
8bdc1658 AB |
16774 | { |
16775 | gdbarch *gdbarch = get_objfile_arch (objfile); | |
16776 | struct type *tt = nullptr; | |
16777 | ||
35add35e AB |
16778 | /* Try to find a suitable floating point builtin type of size BITS. |
16779 | We're going to use the name of this type as the name for the complex | |
16780 | target type that we are about to create. */ | |
1db455a7 | 16781 | switch (cu->language) |
8bdc1658 | 16782 | { |
1db455a7 AB |
16783 | case language_fortran: |
16784 | switch (bits) | |
16785 | { | |
16786 | case 32: | |
16787 | tt = builtin_f_type (gdbarch)->builtin_real; | |
16788 | break; | |
16789 | case 64: | |
16790 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
16791 | break; | |
16792 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
16793 | case 128: | |
16794 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
16795 | break; | |
16796 | } | |
8bdc1658 | 16797 | break; |
1db455a7 AB |
16798 | default: |
16799 | switch (bits) | |
16800 | { | |
16801 | case 32: | |
16802 | tt = builtin_type (gdbarch)->builtin_float; | |
16803 | break; | |
16804 | case 64: | |
16805 | tt = builtin_type (gdbarch)->builtin_double; | |
16806 | break; | |
16807 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
16808 | case 128: | |
16809 | tt = builtin_type (gdbarch)->builtin_long_double; | |
16810 | break; | |
16811 | } | |
8bdc1658 AB |
16812 | break; |
16813 | } | |
16814 | ||
35add35e AB |
16815 | /* If the type we found doesn't match the size we were looking for, then |
16816 | pretend we didn't find a type at all, the complex target type we | |
16817 | create will then be nameless. */ | |
a12e5744 | 16818 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
16819 | tt = nullptr; |
16820 | ||
8bdc1658 | 16821 | const char *name = (tt == nullptr) ? nullptr : TYPE_NAME (tt); |
103a685e | 16822 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
16823 | } |
16824 | ||
c906108c SS |
16825 | /* Find a representation of a given base type and install |
16826 | it in the TYPE field of the die. */ | |
16827 | ||
f792889a | 16828 | static struct type * |
e7c27a73 | 16829 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16830 | { |
518817b3 | 16831 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
16832 | struct type *type; |
16833 | struct attribute *attr; | |
19f392bc | 16834 | int encoding = 0, bits = 0; |
15d034d0 | 16835 | const char *name; |
34877895 | 16836 | gdbarch *arch; |
c906108c | 16837 | |
e142c38c | 16838 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
435d3d88 | 16839 | if (attr != nullptr) |
34877895 | 16840 | encoding = DW_UNSND (attr); |
e142c38c | 16841 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16842 | if (attr != nullptr) |
34877895 | 16843 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
39cbfefa | 16844 | name = dwarf2_name (die, cu); |
6ccb9162 | 16845 | if (!name) |
34877895 | 16846 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e TT |
16847 | |
16848 | arch = get_objfile_arch (objfile); | |
16849 | enum bfd_endian byte_order = gdbarch_byte_order (arch); | |
16850 | ||
34877895 PJ |
16851 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
16852 | if (attr) | |
103a685e TT |
16853 | { |
16854 | int endianity = DW_UNSND (attr); | |
16855 | ||
16856 | switch (endianity) | |
16857 | { | |
16858 | case DW_END_big: | |
16859 | byte_order = BFD_ENDIAN_BIG; | |
16860 | break; | |
16861 | case DW_END_little: | |
16862 | byte_order = BFD_ENDIAN_LITTLE; | |
16863 | break; | |
16864 | default: | |
16865 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
16866 | break; | |
16867 | } | |
16868 | } | |
6ccb9162 UW |
16869 | |
16870 | switch (encoding) | |
c906108c | 16871 | { |
6ccb9162 UW |
16872 | case DW_ATE_address: |
16873 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 16874 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 16875 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
16876 | break; |
16877 | case DW_ATE_boolean: | |
19f392bc | 16878 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
16879 | break; |
16880 | case DW_ATE_complex_float: | |
103a685e TT |
16881 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
16882 | byte_order); | |
19f392bc | 16883 | type = init_complex_type (objfile, name, type); |
6ccb9162 UW |
16884 | break; |
16885 | case DW_ATE_decimal_float: | |
19f392bc | 16886 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
16887 | break; |
16888 | case DW_ATE_float: | |
103a685e | 16889 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
16890 | break; |
16891 | case DW_ATE_signed: | |
eb77c9df | 16892 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
16893 | break; |
16894 | case DW_ATE_unsigned: | |
3b2b8fea TT |
16895 | if (cu->language == language_fortran |
16896 | && name | |
61012eef | 16897 | && startswith (name, "character(")) |
19f392bc UW |
16898 | type = init_character_type (objfile, bits, 1, name); |
16899 | else | |
eb77c9df | 16900 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
16901 | break; |
16902 | case DW_ATE_signed_char: | |
6e70227d | 16903 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
16904 | || cu->language == language_pascal |
16905 | || cu->language == language_fortran) | |
19f392bc UW |
16906 | type = init_character_type (objfile, bits, 0, name); |
16907 | else | |
eb77c9df | 16908 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
16909 | break; |
16910 | case DW_ATE_unsigned_char: | |
868a0084 | 16911 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 16912 | || cu->language == language_pascal |
c44af4eb TT |
16913 | || cu->language == language_fortran |
16914 | || cu->language == language_rust) | |
19f392bc UW |
16915 | type = init_character_type (objfile, bits, 1, name); |
16916 | else | |
eb77c9df | 16917 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 16918 | break; |
75079b2b | 16919 | case DW_ATE_UTF: |
53e710ac | 16920 | { |
53e710ac PA |
16921 | if (bits == 16) |
16922 | type = builtin_type (arch)->builtin_char16; | |
16923 | else if (bits == 32) | |
16924 | type = builtin_type (arch)->builtin_char32; | |
16925 | else | |
16926 | { | |
b98664d3 | 16927 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 16928 | bits); |
eb77c9df | 16929 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
16930 | } |
16931 | return set_die_type (die, type, cu); | |
16932 | } | |
75079b2b TT |
16933 | break; |
16934 | ||
6ccb9162 | 16935 | default: |
b98664d3 | 16936 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 16937 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 16938 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 16939 | break; |
c906108c | 16940 | } |
6ccb9162 | 16941 | |
0114d602 | 16942 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 16943 | TYPE_NOSIGN (type) = 1; |
0114d602 | 16944 | |
2b4424c3 TT |
16945 | maybe_set_alignment (cu, die, type); |
16946 | ||
103a685e | 16947 | TYPE_ENDIANITY_NOT_DEFAULT (type) = gdbarch_byte_order (arch) != byte_order; |
34877895 | 16948 | |
f792889a | 16949 | return set_die_type (die, type, cu); |
c906108c SS |
16950 | } |
16951 | ||
80180f79 SA |
16952 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
16953 | resulting value of the attribute into struct bound_prop. | |
16954 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
16955 | ||
16956 | static int | |
16957 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
16958 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
16959 | struct type *default_type) | |
80180f79 SA |
16960 | { |
16961 | struct dwarf2_property_baton *baton; | |
518817b3 SM |
16962 | struct obstack *obstack |
16963 | = &cu->per_cu->dwarf2_per_objfile->objfile->objfile_obstack; | |
80180f79 | 16964 | |
9a49df9d AB |
16965 | gdb_assert (default_type != NULL); |
16966 | ||
80180f79 SA |
16967 | if (attr == NULL || prop == NULL) |
16968 | return 0; | |
16969 | ||
4fc6c0d5 | 16970 | if (attr->form_is_block ()) |
80180f79 | 16971 | { |
8d749320 | 16972 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 16973 | baton->property_type = default_type; |
80180f79 SA |
16974 | baton->locexpr.per_cu = cu->per_cu; |
16975 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
16976 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
216a7e6b AB |
16977 | switch (attr->name) |
16978 | { | |
16979 | case DW_AT_string_length: | |
16980 | baton->locexpr.is_reference = true; | |
16981 | break; | |
16982 | default: | |
16983 | baton->locexpr.is_reference = false; | |
16984 | break; | |
16985 | } | |
80180f79 SA |
16986 | prop->data.baton = baton; |
16987 | prop->kind = PROP_LOCEXPR; | |
16988 | gdb_assert (prop->data.baton != NULL); | |
16989 | } | |
cd6c91b4 | 16990 | else if (attr->form_is_ref ()) |
80180f79 SA |
16991 | { |
16992 | struct dwarf2_cu *target_cu = cu; | |
16993 | struct die_info *target_die; | |
16994 | struct attribute *target_attr; | |
16995 | ||
16996 | target_die = follow_die_ref (die, attr, &target_cu); | |
16997 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
16998 | if (target_attr == NULL) |
16999 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17000 | target_cu); | |
80180f79 SA |
17001 | if (target_attr == NULL) |
17002 | return 0; | |
17003 | ||
df25ebbd | 17004 | switch (target_attr->name) |
80180f79 | 17005 | { |
df25ebbd | 17006 | case DW_AT_location: |
cd6c91b4 | 17007 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 17008 | { |
8d749320 | 17009 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17010 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17011 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
17012 | prop->data.baton = baton; | |
17013 | prop->kind = PROP_LOCLIST; | |
17014 | gdb_assert (prop->data.baton != NULL); | |
17015 | } | |
4fc6c0d5 | 17016 | else if (target_attr->form_is_block ()) |
df25ebbd | 17017 | { |
8d749320 | 17018 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17019 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17020 | baton->locexpr.per_cu = cu->per_cu; |
17021 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
17022 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
9a49df9d | 17023 | baton->locexpr.is_reference = true; |
df25ebbd JB |
17024 | prop->data.baton = baton; |
17025 | prop->kind = PROP_LOCEXPR; | |
17026 | gdb_assert (prop->data.baton != NULL); | |
17027 | } | |
17028 | else | |
17029 | { | |
17030 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17031 | "dynamic property"); | |
17032 | return 0; | |
17033 | } | |
17034 | break; | |
17035 | case DW_AT_data_member_location: | |
17036 | { | |
17037 | LONGEST offset; | |
17038 | ||
17039 | if (!handle_data_member_location (target_die, target_cu, | |
17040 | &offset)) | |
17041 | return 0; | |
17042 | ||
8d749320 | 17043 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17044 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 17045 | target_cu); |
df25ebbd JB |
17046 | baton->offset_info.offset = offset; |
17047 | baton->offset_info.type = die_type (target_die, target_cu); | |
17048 | prop->data.baton = baton; | |
17049 | prop->kind = PROP_ADDR_OFFSET; | |
17050 | break; | |
17051 | } | |
80180f79 SA |
17052 | } |
17053 | } | |
cd6c91b4 | 17054 | else if (attr->form_is_constant ()) |
80180f79 | 17055 | { |
0826b30a | 17056 | prop->data.const_val = attr->constant_value (0); |
80180f79 SA |
17057 | prop->kind = PROP_CONST; |
17058 | } | |
17059 | else | |
17060 | { | |
17061 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
17062 | dwarf2_name (die, cu)); | |
17063 | return 0; | |
17064 | } | |
17065 | ||
17066 | return 1; | |
17067 | } | |
17068 | ||
09ba997f | 17069 | /* See read.h. */ |
9a49df9d | 17070 | |
09ba997f TT |
17071 | struct type * |
17072 | dwarf2_per_cu_data::int_type (int size_in_bytes, bool unsigned_p) const | |
9a49df9d | 17073 | { |
09ba997f | 17074 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
9a49df9d AB |
17075 | struct type *int_type; |
17076 | ||
17077 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
17078 | #define TRY_TYPE(F) \ |
17079 | int_type = (unsigned_p \ | |
17080 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
17081 | : objfile_type (objfile)->builtin_ ## F); \ | |
17082 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
17083 | return int_type |
17084 | ||
17085 | TRY_TYPE (char); | |
17086 | TRY_TYPE (short); | |
17087 | TRY_TYPE (int); | |
17088 | TRY_TYPE (long); | |
17089 | TRY_TYPE (long_long); | |
17090 | ||
17091 | #undef TRY_TYPE | |
17092 | ||
17093 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
17094 | } | |
17095 | ||
09ba997f | 17096 | /* See read.h. */ |
11a8b164 | 17097 | |
09ba997f TT |
17098 | struct type * |
17099 | dwarf2_per_cu_data::addr_sized_int_type (bool unsigned_p) const | |
11a8b164 | 17100 | { |
09ba997f TT |
17101 | int addr_size = this->addr_size (); |
17102 | return int_type (addr_size, unsigned_p); | |
11a8b164 AB |
17103 | } |
17104 | ||
b86352cf AB |
17105 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
17106 | present (which is valid) then compute the default type based on the | |
17107 | compilation units address size. */ | |
17108 | ||
17109 | static struct type * | |
17110 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
17111 | { | |
17112 | struct type *index_type = die_type (die, cu); | |
17113 | ||
17114 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
17115 | without specifying a base type. | |
17116 | In that case, the base type must be set to the type of | |
17117 | the lower bound, upper bound or count, in that order, if any of these | |
17118 | three attributes references an object that has a type. | |
17119 | If no base type is found, the Dwarf-2 specifications say that | |
17120 | a signed integer type of size equal to the size of an address should | |
17121 | be used. | |
17122 | For the following C code: `extern char gdb_int [];' | |
17123 | GCC produces an empty range DIE. | |
17124 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
17125 | high bound or count are not yet handled by this code. */ | |
17126 | if (TYPE_CODE (index_type) == TYPE_CODE_VOID) | |
09ba997f | 17127 | index_type = cu->per_cu->addr_sized_int_type (false); |
b86352cf AB |
17128 | |
17129 | return index_type; | |
17130 | } | |
17131 | ||
a02abb62 JB |
17132 | /* Read the given DW_AT_subrange DIE. */ |
17133 | ||
f792889a | 17134 | static struct type * |
a02abb62 JB |
17135 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
17136 | { | |
4c9ad8c2 | 17137 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
17138 | struct type *range_type; |
17139 | struct attribute *attr; | |
729efb13 | 17140 | struct dynamic_prop low, high; |
4fae6e18 | 17141 | int low_default_is_valid; |
c451ebe5 | 17142 | int high_bound_is_count = 0; |
15d034d0 | 17143 | const char *name; |
d359392f | 17144 | ULONGEST negative_mask; |
e77813c8 | 17145 | |
b86352cf AB |
17146 | orig_base_type = read_subrange_index_type (die, cu); |
17147 | ||
4c9ad8c2 TT |
17148 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
17149 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
17150 | creating the range type, but we use the result of check_typedef | |
17151 | when examining properties of the type. */ | |
17152 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 17153 | |
7e314c57 JK |
17154 | /* The die_type call above may have already set the type for this DIE. */ |
17155 | range_type = get_die_type (die, cu); | |
17156 | if (range_type) | |
17157 | return range_type; | |
17158 | ||
729efb13 SA |
17159 | low.kind = PROP_CONST; |
17160 | high.kind = PROP_CONST; | |
17161 | high.data.const_val = 0; | |
17162 | ||
4fae6e18 JK |
17163 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
17164 | omitting DW_AT_lower_bound. */ | |
17165 | switch (cu->language) | |
6e70227d | 17166 | { |
4fae6e18 JK |
17167 | case language_c: |
17168 | case language_cplus: | |
729efb13 | 17169 | low.data.const_val = 0; |
4fae6e18 JK |
17170 | low_default_is_valid = 1; |
17171 | break; | |
17172 | case language_fortran: | |
729efb13 | 17173 | low.data.const_val = 1; |
4fae6e18 JK |
17174 | low_default_is_valid = 1; |
17175 | break; | |
17176 | case language_d: | |
4fae6e18 | 17177 | case language_objc: |
c44af4eb | 17178 | case language_rust: |
729efb13 | 17179 | low.data.const_val = 0; |
4fae6e18 JK |
17180 | low_default_is_valid = (cu->header.version >= 4); |
17181 | break; | |
17182 | case language_ada: | |
17183 | case language_m2: | |
17184 | case language_pascal: | |
729efb13 | 17185 | low.data.const_val = 1; |
4fae6e18 JK |
17186 | low_default_is_valid = (cu->header.version >= 4); |
17187 | break; | |
17188 | default: | |
729efb13 | 17189 | low.data.const_val = 0; |
4fae6e18 JK |
17190 | low_default_is_valid = 0; |
17191 | break; | |
a02abb62 JB |
17192 | } |
17193 | ||
e142c38c | 17194 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 17195 | if (attr != nullptr) |
9a49df9d | 17196 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 17197 | else if (!low_default_is_valid) |
b98664d3 | 17198 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
17199 | "- DIE at %s [in module %s]"), |
17200 | sect_offset_str (die->sect_off), | |
518817b3 | 17201 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a02abb62 | 17202 | |
506f5c41 TV |
17203 | struct attribute *attr_ub, *attr_count; |
17204 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 17205 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 17206 | { |
506f5c41 | 17207 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 17208 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 17209 | { |
c451ebe5 SA |
17210 | /* If bounds are constant do the final calculation here. */ |
17211 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
17212 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
17213 | else | |
17214 | high_bound_is_count = 1; | |
c2ff108b | 17215 | } |
506f5c41 TV |
17216 | else |
17217 | { | |
17218 | if (attr_ub != NULL) | |
17219 | complaint (_("Unresolved DW_AT_upper_bound " | |
17220 | "- DIE at %s [in module %s]"), | |
17221 | sect_offset_str (die->sect_off), | |
17222 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17223 | if (attr_count != NULL) | |
17224 | complaint (_("Unresolved DW_AT_count " | |
17225 | "- DIE at %s [in module %s]"), | |
17226 | sect_offset_str (die->sect_off), | |
17227 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17228 | } | |
e77813c8 | 17229 | } |
a02abb62 | 17230 | |
4e962e74 TT |
17231 | LONGEST bias = 0; |
17232 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 17233 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
0826b30a | 17234 | bias = bias_attr->constant_value (0); |
4e962e74 | 17235 | |
dbb9c2b1 JB |
17236 | /* Normally, the DWARF producers are expected to use a signed |
17237 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
17238 | But this is unfortunately not always the case, as witnessed | |
17239 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
17240 | is used instead. To work around that ambiguity, we treat | |
17241 | the bounds as signed, and thus sign-extend their values, when | |
17242 | the base type is signed. */ | |
6e70227d | 17243 | negative_mask = |
d359392f | 17244 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
17245 | if (low.kind == PROP_CONST |
17246 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
17247 | low.data.const_val |= negative_mask; | |
17248 | if (high.kind == PROP_CONST | |
17249 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
17250 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 17251 | |
5bbd8269 AB |
17252 | /* Check for bit and byte strides. */ |
17253 | struct dynamic_prop byte_stride_prop; | |
17254 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
17255 | if (attr_byte_stride != nullptr) | |
17256 | { | |
09ba997f | 17257 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
5bbd8269 AB |
17258 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, |
17259 | prop_type); | |
17260 | } | |
17261 | ||
17262 | struct dynamic_prop bit_stride_prop; | |
17263 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
17264 | if (attr_bit_stride != nullptr) | |
17265 | { | |
17266 | /* It only makes sense to have either a bit or byte stride. */ | |
17267 | if (attr_byte_stride != nullptr) | |
17268 | { | |
17269 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
17270 | "- DIE at %s [in module %s]"), | |
17271 | sect_offset_str (die->sect_off), | |
17272 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17273 | attr_bit_stride = nullptr; | |
17274 | } | |
17275 | else | |
17276 | { | |
09ba997f | 17277 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
5bbd8269 AB |
17278 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, |
17279 | prop_type); | |
17280 | } | |
17281 | } | |
17282 | ||
17283 | if (attr_byte_stride != nullptr | |
17284 | || attr_bit_stride != nullptr) | |
17285 | { | |
17286 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
17287 | struct dynamic_prop *stride | |
17288 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
17289 | ||
17290 | range_type | |
17291 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
17292 | &high, bias, stride, byte_stride_p); | |
17293 | } | |
17294 | else | |
17295 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 17296 | |
c451ebe5 SA |
17297 | if (high_bound_is_count) |
17298 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
17299 | ||
c2ff108b JK |
17300 | /* Ada expects an empty array on no boundary attributes. */ |
17301 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 17302 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 17303 | |
39cbfefa DJ |
17304 | name = dwarf2_name (die, cu); |
17305 | if (name) | |
17306 | TYPE_NAME (range_type) = name; | |
6e70227d | 17307 | |
e142c38c | 17308 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17309 | if (attr != nullptr) |
a02abb62 JB |
17310 | TYPE_LENGTH (range_type) = DW_UNSND (attr); |
17311 | ||
2b4424c3 TT |
17312 | maybe_set_alignment (cu, die, range_type); |
17313 | ||
7e314c57 JK |
17314 | set_die_type (die, range_type, cu); |
17315 | ||
17316 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17317 | set_descriptive_type (range_type, die, cu); |
17318 | ||
7e314c57 | 17319 | return range_type; |
a02abb62 | 17320 | } |
6e70227d | 17321 | |
f792889a | 17322 | static struct type * |
81a17f79 JB |
17323 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
17324 | { | |
17325 | struct type *type; | |
81a17f79 | 17326 | |
518817b3 SM |
17327 | type = init_type (cu->per_cu->dwarf2_per_objfile->objfile, TYPE_CODE_VOID,0, |
17328 | NULL); | |
0114d602 | 17329 | TYPE_NAME (type) = dwarf2_name (die, cu); |
81a17f79 | 17330 | |
74a2f8ff | 17331 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 17332 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
17333 | such a type, we treat it as a stub, and try to resolve it later on, |
17334 | when needed. */ | |
17335 | if (cu->language == language_ada) | |
17336 | TYPE_STUB (type) = 1; | |
17337 | ||
f792889a | 17338 | return set_die_type (die, type, cu); |
81a17f79 | 17339 | } |
a02abb62 | 17340 | |
639d11d3 DC |
17341 | /* Read a single die and all its descendents. Set the die's sibling |
17342 | field to NULL; set other fields in the die correctly, and set all | |
17343 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
17344 | location of the info_ptr after reading all of those dies. PARENT | |
17345 | is the parent of the die in question. */ | |
17346 | ||
17347 | static struct die_info * | |
dee91e82 | 17348 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
17349 | const gdb_byte *info_ptr, |
17350 | const gdb_byte **new_info_ptr, | |
dee91e82 | 17351 | struct die_info *parent) |
639d11d3 DC |
17352 | { |
17353 | struct die_info *die; | |
d521ce57 | 17354 | const gdb_byte *cur_ptr; |
639d11d3 | 17355 | |
3e225074 | 17356 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, 0); |
1d325ec1 DJ |
17357 | if (die == NULL) |
17358 | { | |
17359 | *new_info_ptr = cur_ptr; | |
17360 | return NULL; | |
17361 | } | |
93311388 | 17362 | store_in_ref_table (die, reader->cu); |
639d11d3 | 17363 | |
3e225074 | 17364 | if (die->has_children) |
bf6af496 | 17365 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
17366 | else |
17367 | { | |
17368 | die->child = NULL; | |
17369 | *new_info_ptr = cur_ptr; | |
17370 | } | |
17371 | ||
17372 | die->sibling = NULL; | |
17373 | die->parent = parent; | |
17374 | return die; | |
17375 | } | |
17376 | ||
17377 | /* Read a die, all of its descendents, and all of its siblings; set | |
17378 | all of the fields of all of the dies correctly. Arguments are as | |
17379 | in read_die_and_children. */ | |
17380 | ||
17381 | static struct die_info * | |
bf6af496 | 17382 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
17383 | const gdb_byte *info_ptr, |
17384 | const gdb_byte **new_info_ptr, | |
bf6af496 | 17385 | struct die_info *parent) |
639d11d3 DC |
17386 | { |
17387 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 17388 | const gdb_byte *cur_ptr; |
639d11d3 | 17389 | |
c906108c | 17390 | cur_ptr = info_ptr; |
639d11d3 DC |
17391 | first_die = last_sibling = NULL; |
17392 | ||
17393 | while (1) | |
c906108c | 17394 | { |
639d11d3 | 17395 | struct die_info *die |
dee91e82 | 17396 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 17397 | |
1d325ec1 | 17398 | if (die == NULL) |
c906108c | 17399 | { |
639d11d3 DC |
17400 | *new_info_ptr = cur_ptr; |
17401 | return first_die; | |
c906108c | 17402 | } |
1d325ec1 DJ |
17403 | |
17404 | if (!first_die) | |
17405 | first_die = die; | |
c906108c | 17406 | else |
1d325ec1 DJ |
17407 | last_sibling->sibling = die; |
17408 | ||
17409 | last_sibling = die; | |
c906108c | 17410 | } |
c906108c SS |
17411 | } |
17412 | ||
bf6af496 DE |
17413 | /* Read a die, all of its descendents, and all of its siblings; set |
17414 | all of the fields of all of the dies correctly. Arguments are as | |
17415 | in read_die_and_children. | |
17416 | This the main entry point for reading a DIE and all its children. */ | |
17417 | ||
17418 | static struct die_info * | |
17419 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
17420 | const gdb_byte *info_ptr, |
17421 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
17422 | struct die_info *parent) |
17423 | { | |
17424 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
17425 | new_info_ptr, parent); | |
17426 | ||
b4f54984 | 17427 | if (dwarf_die_debug) |
bf6af496 DE |
17428 | { |
17429 | fprintf_unfiltered (gdb_stdlog, | |
17430 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 17431 | reader->die_section->get_name (), |
bf6af496 DE |
17432 | (unsigned) (info_ptr - reader->die_section->buffer), |
17433 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 17434 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
17435 | } |
17436 | ||
17437 | return die; | |
17438 | } | |
17439 | ||
3019eac3 DE |
17440 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
17441 | attributes. | |
17442 | The caller is responsible for filling in the extra attributes | |
17443 | and updating (*DIEP)->num_attrs. | |
17444 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 17445 | except for its child, sibling, and parent fields. */ |
93311388 | 17446 | |
d521ce57 | 17447 | static const gdb_byte * |
3019eac3 | 17448 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 17449 | struct die_info **diep, const gdb_byte *info_ptr, |
3e225074 | 17450 | int num_extra_attrs) |
93311388 | 17451 | { |
b64f50a1 | 17452 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
17453 | struct abbrev_info *abbrev; |
17454 | struct die_info *die; | |
17455 | struct dwarf2_cu *cu = reader->cu; | |
17456 | bfd *abfd = reader->abfd; | |
17457 | ||
9c541725 | 17458 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
17459 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
17460 | info_ptr += bytes_read; | |
17461 | if (!abbrev_number) | |
17462 | { | |
17463 | *diep = NULL; | |
93311388 DE |
17464 | return info_ptr; |
17465 | } | |
17466 | ||
685af9cd | 17467 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 17468 | if (!abbrev) |
348e048f DE |
17469 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
17470 | abbrev_number, | |
17471 | bfd_get_filename (abfd)); | |
17472 | ||
3019eac3 | 17473 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 17474 | die->sect_off = sect_off; |
93311388 DE |
17475 | die->tag = abbrev->tag; |
17476 | die->abbrev = abbrev_number; | |
3e225074 | 17477 | die->has_children = abbrev->has_children; |
93311388 | 17478 | |
3019eac3 DE |
17479 | /* Make the result usable. |
17480 | The caller needs to update num_attrs after adding the extra | |
17481 | attributes. */ | |
93311388 DE |
17482 | die->num_attrs = abbrev->num_attrs; |
17483 | ||
18a8505e | 17484 | std::vector<int> indexes_that_need_reprocess; |
93311388 | 17485 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e AT |
17486 | { |
17487 | bool need_reprocess; | |
17488 | info_ptr = | |
17489 | read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], | |
17490 | info_ptr, &need_reprocess); | |
17491 | if (need_reprocess) | |
17492 | indexes_that_need_reprocess.push_back (i); | |
17493 | } | |
17494 | ||
052c8bb8 | 17495 | struct attribute *attr = die->attr (DW_AT_str_offsets_base); |
18a8505e AT |
17496 | if (attr != nullptr) |
17497 | cu->str_offsets_base = DW_UNSND (attr); | |
93311388 | 17498 | |
a39fdb41 | 17499 | auto maybe_addr_base = die->addr_base (); |
18a8505e AT |
17500 | if (maybe_addr_base.has_value ()) |
17501 | cu->addr_base = *maybe_addr_base; | |
17502 | for (int index : indexes_that_need_reprocess) | |
17503 | read_attribute_reprocess (reader, &die->attrs[index]); | |
93311388 | 17504 | *diep = die; |
93311388 DE |
17505 | return info_ptr; |
17506 | } | |
17507 | ||
3019eac3 DE |
17508 | /* Read a die and all its attributes. |
17509 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 17510 | except for its child, sibling, and parent fields. */ |
3019eac3 | 17511 | |
d521ce57 | 17512 | static const gdb_byte * |
3019eac3 | 17513 | read_full_die (const struct die_reader_specs *reader, |
3e225074 | 17514 | struct die_info **diep, const gdb_byte *info_ptr) |
3019eac3 | 17515 | { |
d521ce57 | 17516 | const gdb_byte *result; |
bf6af496 | 17517 | |
3e225074 | 17518 | result = read_full_die_1 (reader, diep, info_ptr, 0); |
bf6af496 | 17519 | |
b4f54984 | 17520 | if (dwarf_die_debug) |
bf6af496 DE |
17521 | { |
17522 | fprintf_unfiltered (gdb_stdlog, | |
17523 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 17524 | reader->die_section->get_name (), |
bf6af496 DE |
17525 | (unsigned) (info_ptr - reader->die_section->buffer), |
17526 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 17527 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
17528 | } |
17529 | ||
17530 | return result; | |
3019eac3 | 17531 | } |
433df2d4 | 17532 | \f |
c906108c | 17533 | |
72bf9492 DJ |
17534 | /* Returns nonzero if TAG represents a type that we might generate a partial |
17535 | symbol for. */ | |
17536 | ||
17537 | static int | |
17538 | is_type_tag_for_partial (int tag) | |
17539 | { | |
17540 | switch (tag) | |
17541 | { | |
17542 | #if 0 | |
17543 | /* Some types that would be reasonable to generate partial symbols for, | |
17544 | that we don't at present. */ | |
17545 | case DW_TAG_array_type: | |
17546 | case DW_TAG_file_type: | |
17547 | case DW_TAG_ptr_to_member_type: | |
17548 | case DW_TAG_set_type: | |
17549 | case DW_TAG_string_type: | |
17550 | case DW_TAG_subroutine_type: | |
17551 | #endif | |
17552 | case DW_TAG_base_type: | |
17553 | case DW_TAG_class_type: | |
680b30c7 | 17554 | case DW_TAG_interface_type: |
72bf9492 DJ |
17555 | case DW_TAG_enumeration_type: |
17556 | case DW_TAG_structure_type: | |
17557 | case DW_TAG_subrange_type: | |
17558 | case DW_TAG_typedef: | |
17559 | case DW_TAG_union_type: | |
17560 | return 1; | |
17561 | default: | |
17562 | return 0; | |
17563 | } | |
17564 | } | |
17565 | ||
17566 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
17567 | ||
17568 | static struct partial_die_info * | |
dee91e82 | 17569 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 17570 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 17571 | { |
dee91e82 | 17572 | struct dwarf2_cu *cu = reader->cu; |
518817b3 | 17573 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
72bf9492 | 17574 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 17575 | unsigned int bytes_read; |
5afb4e99 | 17576 | unsigned int load_all = 0; |
72bf9492 DJ |
17577 | int nesting_level = 1; |
17578 | ||
17579 | parent_die = NULL; | |
17580 | last_die = NULL; | |
17581 | ||
7adf1e79 DE |
17582 | gdb_assert (cu->per_cu != NULL); |
17583 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
17584 | load_all = 1; |
17585 | ||
72bf9492 DJ |
17586 | cu->partial_dies |
17587 | = htab_create_alloc_ex (cu->header.length / 12, | |
17588 | partial_die_hash, | |
17589 | partial_die_eq, | |
17590 | NULL, | |
17591 | &cu->comp_unit_obstack, | |
17592 | hashtab_obstack_allocate, | |
17593 | dummy_obstack_deallocate); | |
17594 | ||
72bf9492 DJ |
17595 | while (1) |
17596 | { | |
685af9cd | 17597 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
17598 | |
17599 | /* A NULL abbrev means the end of a series of children. */ | |
17600 | if (abbrev == NULL) | |
17601 | { | |
17602 | if (--nesting_level == 0) | |
cd9983dd YQ |
17603 | return first_die; |
17604 | ||
72bf9492 DJ |
17605 | info_ptr += bytes_read; |
17606 | last_die = parent_die; | |
17607 | parent_die = parent_die->die_parent; | |
17608 | continue; | |
17609 | } | |
17610 | ||
98bfdba5 PA |
17611 | /* Check for template arguments. We never save these; if |
17612 | they're seen, we just mark the parent, and go on our way. */ | |
17613 | if (parent_die != NULL | |
17614 | && cu->language == language_cplus | |
17615 | && (abbrev->tag == DW_TAG_template_type_param | |
17616 | || abbrev->tag == DW_TAG_template_value_param)) | |
17617 | { | |
17618 | parent_die->has_template_arguments = 1; | |
17619 | ||
17620 | if (!load_all) | |
17621 | { | |
17622 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 17623 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
17624 | continue; |
17625 | } | |
17626 | } | |
17627 | ||
0d99eb77 | 17628 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
17629 | Skip their other children. */ |
17630 | if (!load_all | |
17631 | && cu->language == language_cplus | |
17632 | && parent_die != NULL | |
17633 | && parent_die->tag == DW_TAG_subprogram) | |
17634 | { | |
dee91e82 | 17635 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
17636 | continue; |
17637 | } | |
17638 | ||
5afb4e99 DJ |
17639 | /* Check whether this DIE is interesting enough to save. Normally |
17640 | we would not be interested in members here, but there may be | |
17641 | later variables referencing them via DW_AT_specification (for | |
17642 | static members). */ | |
17643 | if (!load_all | |
17644 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 17645 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
17646 | && abbrev->tag != DW_TAG_enumerator |
17647 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 17648 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 17649 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 17650 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 17651 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 17652 | && abbrev->tag != DW_TAG_module |
95554aad | 17653 | && abbrev->tag != DW_TAG_member |
74921315 KS |
17654 | && abbrev->tag != DW_TAG_imported_unit |
17655 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
17656 | { |
17657 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 17658 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
17659 | continue; |
17660 | } | |
17661 | ||
6f06d47b YQ |
17662 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
17663 | abbrev); | |
cd9983dd | 17664 | |
48fbe735 | 17665 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
17666 | |
17667 | /* This two-pass algorithm for processing partial symbols has a | |
17668 | high cost in cache pressure. Thus, handle some simple cases | |
17669 | here which cover the majority of C partial symbols. DIEs | |
17670 | which neither have specification tags in them, nor could have | |
17671 | specification tags elsewhere pointing at them, can simply be | |
17672 | processed and discarded. | |
17673 | ||
17674 | This segment is also optional; scan_partial_symbols and | |
17675 | add_partial_symbol will handle these DIEs if we chain | |
17676 | them in normally. When compilers which do not emit large | |
17677 | quantities of duplicate debug information are more common, | |
17678 | this code can probably be removed. */ | |
17679 | ||
17680 | /* Any complete simple types at the top level (pretty much all | |
17681 | of them, for a language without namespaces), can be processed | |
17682 | directly. */ | |
17683 | if (parent_die == NULL | |
cd9983dd YQ |
17684 | && pdi.has_specification == 0 |
17685 | && pdi.is_declaration == 0 | |
17686 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
17687 | || pdi.tag == DW_TAG_base_type | |
17688 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 17689 | { |
cd9983dd | 17690 | if (building_psymtab && pdi.name != NULL) |
31edb802 | 17691 | add_psymbol_to_list (pdi.name, false, |
79748972 | 17692 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 17693 | psymbol_placement::STATIC, |
1762568f | 17694 | 0, cu->language, objfile); |
cd9983dd | 17695 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
17696 | continue; |
17697 | } | |
17698 | ||
d8228535 JK |
17699 | /* The exception for DW_TAG_typedef with has_children above is |
17700 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 17701 | type_name_or_error will error on such types later. |
d8228535 JK |
17702 | |
17703 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
17704 | it could not find the child DIEs referenced later, this is checked | |
17705 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
17706 | ||
cd9983dd | 17707 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 17708 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 17709 | "- DIE at %s [in module %s]"), |
cd9983dd | 17710 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 17711 | |
72bf9492 DJ |
17712 | /* If we're at the second level, and we're an enumerator, and |
17713 | our parent has no specification (meaning possibly lives in a | |
17714 | namespace elsewhere), then we can add the partial symbol now | |
17715 | instead of queueing it. */ | |
cd9983dd | 17716 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
17717 | && parent_die != NULL |
17718 | && parent_die->die_parent == NULL | |
17719 | && parent_die->tag == DW_TAG_enumeration_type | |
17720 | && parent_die->has_specification == 0) | |
17721 | { | |
cd9983dd | 17722 | if (pdi.name == NULL) |
b98664d3 | 17723 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 17724 | else if (building_psymtab) |
31edb802 | 17725 | add_psymbol_to_list (pdi.name, false, |
79748972 | 17726 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 17727 | cu->language == language_cplus |
75aedd27 TT |
17728 | ? psymbol_placement::GLOBAL |
17729 | : psymbol_placement::STATIC, | |
1762568f | 17730 | 0, cu->language, objfile); |
72bf9492 | 17731 | |
cd9983dd | 17732 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
17733 | continue; |
17734 | } | |
17735 | ||
cd9983dd | 17736 | struct partial_die_info *part_die |
6f06d47b | 17737 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 17738 | |
72bf9492 DJ |
17739 | /* We'll save this DIE so link it in. */ |
17740 | part_die->die_parent = parent_die; | |
17741 | part_die->die_sibling = NULL; | |
17742 | part_die->die_child = NULL; | |
17743 | ||
17744 | if (last_die && last_die == parent_die) | |
17745 | last_die->die_child = part_die; | |
17746 | else if (last_die) | |
17747 | last_die->die_sibling = part_die; | |
17748 | ||
17749 | last_die = part_die; | |
17750 | ||
17751 | if (first_die == NULL) | |
17752 | first_die = part_die; | |
17753 | ||
17754 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
17755 | find interesting need to be in the hash table, because we | |
17756 | also have the parent/sibling/child chains; only those that we | |
17757 | might refer to by offset later during partial symbol reading. | |
17758 | ||
17759 | For now this means things that might have be the target of a | |
17760 | DW_AT_specification, DW_AT_abstract_origin, or | |
17761 | DW_AT_extension. DW_AT_extension will refer only to | |
17762 | namespaces; DW_AT_abstract_origin refers to functions (and | |
17763 | many things under the function DIE, but we do not recurse | |
17764 | into function DIEs during partial symbol reading) and | |
17765 | possibly variables as well; DW_AT_specification refers to | |
17766 | declarations. Declarations ought to have the DW_AT_declaration | |
17767 | flag. It happens that GCC forgets to put it in sometimes, but | |
17768 | only for functions, not for types. | |
17769 | ||
17770 | Adding more things than necessary to the hash table is harmless | |
17771 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
17772 | wasted time in find_partial_die, when we reread the compilation |
17773 | unit with load_all_dies set. */ | |
72bf9492 | 17774 | |
5afb4e99 | 17775 | if (load_all |
72929c62 | 17776 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 17777 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
17778 | || abbrev->tag == DW_TAG_variable |
17779 | || abbrev->tag == DW_TAG_namespace | |
17780 | || part_die->is_declaration) | |
17781 | { | |
17782 | void **slot; | |
17783 | ||
17784 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
17785 | to_underlying (part_die->sect_off), |
17786 | INSERT); | |
72bf9492 DJ |
17787 | *slot = part_die; |
17788 | } | |
17789 | ||
72bf9492 | 17790 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 17791 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
17792 | languages we have to, so that we can get at method physnames |
17793 | to infer fully qualified class names, for DW_AT_specification, | |
17794 | and for C++ template arguments. For C++, we also look one level | |
17795 | inside functions to find template arguments (if the name of the | |
17796 | function does not already contain the template arguments). | |
bc30ff58 | 17797 | |
0a4b0913 AB |
17798 | For Ada and Fortran, we need to scan the children of subprograms |
17799 | and lexical blocks as well because these languages allow the | |
17800 | definition of nested entities that could be interesting for the | |
17801 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 17802 | if (last_die->has_children |
5afb4e99 DJ |
17803 | && (load_all |
17804 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 17805 | || last_die->tag == DW_TAG_module |
72bf9492 | 17806 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
17807 | || (cu->language == language_cplus |
17808 | && last_die->tag == DW_TAG_subprogram | |
17809 | && (last_die->name == NULL | |
17810 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
17811 | || (cu->language != language_c |
17812 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 17813 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 17814 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 17815 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
17816 | || ((cu->language == language_ada |
17817 | || cu->language == language_fortran) | |
bc30ff58 JB |
17818 | && (last_die->tag == DW_TAG_subprogram |
17819 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
17820 | { |
17821 | nesting_level++; | |
17822 | parent_die = last_die; | |
17823 | continue; | |
17824 | } | |
17825 | ||
17826 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 17827 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
17828 | |
17829 | /* Back to the top, do it again. */ | |
17830 | } | |
17831 | } | |
17832 | ||
6f06d47b YQ |
17833 | partial_die_info::partial_die_info (sect_offset sect_off_, |
17834 | struct abbrev_info *abbrev) | |
17835 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
17836 | { | |
17837 | } | |
17838 | ||
35cc7ed7 YQ |
17839 | /* Read a minimal amount of information into the minimal die structure. |
17840 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 17841 | |
48fbe735 YQ |
17842 | const gdb_byte * |
17843 | partial_die_info::read (const struct die_reader_specs *reader, | |
17844 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 17845 | { |
dee91e82 | 17846 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
17847 | struct dwarf2_per_objfile *dwarf2_per_objfile |
17848 | = cu->per_cu->dwarf2_per_objfile; | |
fa238c03 | 17849 | unsigned int i; |
c5aa993b | 17850 | int has_low_pc_attr = 0; |
c906108c | 17851 | int has_high_pc_attr = 0; |
91da1414 | 17852 | int high_pc_relative = 0; |
c906108c | 17853 | |
18a8505e | 17854 | std::vector<struct attribute> attr_vec (abbrev.num_attrs); |
fd0a254f | 17855 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 17856 | { |
18a8505e AT |
17857 | bool need_reprocess; |
17858 | info_ptr = read_attribute (reader, &attr_vec[i], &abbrev.attrs[i], | |
17859 | info_ptr, &need_reprocess); | |
17860 | /* String and address offsets that need to do the reprocessing have | |
17861 | already been read at this point, so there is no need to wait until | |
17862 | the loop terminates to do the reprocessing. */ | |
17863 | if (need_reprocess) | |
17864 | read_attribute_reprocess (reader, &attr_vec[i]); | |
17865 | attribute &attr = attr_vec[i]; | |
c906108c | 17866 | /* Store the data if it is of an attribute we want to keep in a |
c5aa993b | 17867 | partial symbol table. */ |
c906108c SS |
17868 | switch (attr.name) |
17869 | { | |
17870 | case DW_AT_name: | |
48fbe735 | 17871 | switch (tag) |
71c25dea TT |
17872 | { |
17873 | case DW_TAG_compile_unit: | |
95554aad | 17874 | case DW_TAG_partial_unit: |
348e048f | 17875 | case DW_TAG_type_unit: |
71c25dea TT |
17876 | /* Compilation units have a DW_AT_name that is a filename, not |
17877 | a source language identifier. */ | |
17878 | case DW_TAG_enumeration_type: | |
17879 | case DW_TAG_enumerator: | |
17880 | /* These tags always have simple identifiers already; no need | |
17881 | to canonicalize them. */ | |
48fbe735 | 17882 | name = DW_STRING (&attr); |
71c25dea TT |
17883 | break; |
17884 | default: | |
48fbe735 YQ |
17885 | { |
17886 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
17887 | ||
17888 | name | |
be1e3d3e | 17889 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, objfile); |
48fbe735 | 17890 | } |
71c25dea TT |
17891 | break; |
17892 | } | |
c906108c | 17893 | break; |
31ef98ae | 17894 | case DW_AT_linkage_name: |
c906108c | 17895 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
17896 | /* Note that both forms of linkage name might appear. We |
17897 | assume they will be the same, and we only store the last | |
17898 | one we see. */ | |
48fbe735 | 17899 | linkage_name = DW_STRING (&attr); |
c906108c SS |
17900 | break; |
17901 | case DW_AT_low_pc: | |
17902 | has_low_pc_attr = 1; | |
cd6c91b4 | 17903 | lowpc = attr.value_as_address (); |
c906108c SS |
17904 | break; |
17905 | case DW_AT_high_pc: | |
17906 | has_high_pc_attr = 1; | |
cd6c91b4 TT |
17907 | highpc = attr.value_as_address (); |
17908 | if (cu->header.version >= 4 && attr.form_is_constant ()) | |
31aa7e4e | 17909 | high_pc_relative = 1; |
c906108c SS |
17910 | break; |
17911 | case DW_AT_location: | |
0963b4bd | 17912 | /* Support the .debug_loc offsets. */ |
4fc6c0d5 | 17913 | if (attr.form_is_block ()) |
8e19ed76 | 17914 | { |
48fbe735 | 17915 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 17916 | } |
cd6c91b4 | 17917 | else if (attr.form_is_section_offset ()) |
8e19ed76 | 17918 | { |
4d3c2250 | 17919 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
17920 | } |
17921 | else | |
17922 | { | |
4d3c2250 KB |
17923 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
17924 | "partial symbol information"); | |
8e19ed76 | 17925 | } |
c906108c | 17926 | break; |
c906108c | 17927 | case DW_AT_external: |
48fbe735 | 17928 | is_external = DW_UNSND (&attr); |
c906108c SS |
17929 | break; |
17930 | case DW_AT_declaration: | |
48fbe735 | 17931 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
17932 | break; |
17933 | case DW_AT_type: | |
48fbe735 | 17934 | has_type = 1; |
c906108c SS |
17935 | break; |
17936 | case DW_AT_abstract_origin: | |
17937 | case DW_AT_specification: | |
72bf9492 | 17938 | case DW_AT_extension: |
48fbe735 | 17939 | has_specification = 1; |
0826b30a | 17940 | spec_offset = attr.get_ref_die_offset (); |
48fbe735 | 17941 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 | 17942 | || cu->per_cu->is_dwz); |
c906108c SS |
17943 | break; |
17944 | case DW_AT_sibling: | |
17945 | /* Ignore absolute siblings, they might point outside of | |
17946 | the current compile unit. */ | |
17947 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 17948 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 17949 | else |
b9502d3f | 17950 | { |
48fbe735 | 17951 | const gdb_byte *buffer = reader->buffer; |
0826b30a | 17952 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 17953 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
17954 | |
17955 | if (sibling_ptr < info_ptr) | |
b98664d3 | 17956 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 17957 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 17958 | reader->die_section->overflow_complaint (); |
b9502d3f | 17959 | else |
48fbe735 | 17960 | sibling = sibling_ptr; |
b9502d3f | 17961 | } |
c906108c | 17962 | break; |
fa4028e9 | 17963 | case DW_AT_byte_size: |
48fbe735 | 17964 | has_byte_size = 1; |
fa4028e9 | 17965 | break; |
ff908ebf | 17966 | case DW_AT_const_value: |
48fbe735 | 17967 | has_const_value = 1; |
ff908ebf | 17968 | break; |
68511cec CES |
17969 | case DW_AT_calling_convention: |
17970 | /* DWARF doesn't provide a way to identify a program's source-level | |
17971 | entry point. DW_AT_calling_convention attributes are only meant | |
17972 | to describe functions' calling conventions. | |
17973 | ||
17974 | However, because it's a necessary piece of information in | |
0c1b455e TT |
17975 | Fortran, and before DWARF 4 DW_CC_program was the only |
17976 | piece of debugging information whose definition refers to | |
17977 | a 'main program' at all, several compilers marked Fortran | |
17978 | main programs with DW_CC_program --- even when those | |
17979 | functions use the standard calling conventions. | |
17980 | ||
17981 | Although DWARF now specifies a way to provide this | |
17982 | information, we support this practice for backward | |
17983 | compatibility. */ | |
68511cec | 17984 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 17985 | && cu->language == language_fortran) |
48fbe735 | 17986 | main_subprogram = 1; |
68511cec | 17987 | break; |
481860b3 GB |
17988 | case DW_AT_inline: |
17989 | if (DW_UNSND (&attr) == DW_INL_inlined | |
17990 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 17991 | may_be_inlined = 1; |
481860b3 | 17992 | break; |
95554aad TT |
17993 | |
17994 | case DW_AT_import: | |
48fbe735 | 17995 | if (tag == DW_TAG_imported_unit) |
36586728 | 17996 | { |
0826b30a | 17997 | d.sect_off = attr.get_ref_die_offset (); |
48fbe735 | 17998 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 TT |
17999 | || cu->per_cu->is_dwz); |
18000 | } | |
95554aad TT |
18001 | break; |
18002 | ||
0c1b455e | 18003 | case DW_AT_main_subprogram: |
48fbe735 | 18004 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
18005 | break; |
18006 | ||
05caa1d2 TT |
18007 | case DW_AT_ranges: |
18008 | { | |
18009 | /* It would be nice to reuse dwarf2_get_pc_bounds here, | |
18010 | but that requires a full DIE, so instead we just | |
18011 | reimplement it. */ | |
18012 | int need_ranges_base = tag != DW_TAG_compile_unit; | |
18013 | unsigned int ranges_offset = (DW_UNSND (&attr) | |
18014 | + (need_ranges_base | |
18015 | ? cu->ranges_base | |
18016 | : 0)); | |
18017 | ||
18018 | /* Value of the DW_AT_ranges attribute is the offset in the | |
18019 | .debug_ranges section. */ | |
18020 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, | |
18021 | nullptr)) | |
18022 | has_pc_info = 1; | |
18023 | } | |
18024 | break; | |
18025 | ||
c906108c SS |
18026 | default: |
18027 | break; | |
18028 | } | |
18029 | } | |
18030 | ||
10d06d82 TT |
18031 | /* For Ada, if both the name and the linkage name appear, we prefer |
18032 | the latter. This lets "catch exception" work better, regardless | |
18033 | of the order in which the name and linkage name were emitted. | |
18034 | Really, though, this is just a workaround for the fact that gdb | |
18035 | doesn't store both the name and the linkage name. */ | |
18036 | if (cu->language == language_ada && linkage_name != nullptr) | |
18037 | name = linkage_name; | |
18038 | ||
91da1414 | 18039 | if (high_pc_relative) |
48fbe735 | 18040 | highpc += lowpc; |
91da1414 | 18041 | |
9373cf26 JK |
18042 | if (has_low_pc_attr && has_high_pc_attr) |
18043 | { | |
18044 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
18045 | eliminate duplicate copies of functions and vtables and such. | |
18046 | The linker will arbitrarily choose one and discard the others. | |
18047 | The AT_*_pc values for such functions refer to local labels in | |
18048 | these sections. If the section from that file was discarded, the | |
18049 | labels are not in the output, so the relocs get a value of 0. | |
18050 | If this is a discarded function, mark the pc bounds as invalid, | |
18051 | so that GDB will ignore it. */ | |
48fbe735 | 18052 | if (lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) |
9373cf26 | 18053 | { |
48fbe735 | 18054 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18055 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18056 | |
b98664d3 | 18057 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 18058 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18059 | paddress (gdbarch, lowpc), |
18060 | sect_offset_str (sect_off), | |
9d8780f0 | 18061 | objfile_name (objfile)); |
9373cf26 JK |
18062 | } |
18063 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 18064 | else if (lowpc >= highpc) |
9373cf26 | 18065 | { |
48fbe735 | 18066 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18067 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18068 | |
b98664d3 | 18069 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 18070 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18071 | paddress (gdbarch, lowpc), |
18072 | paddress (gdbarch, highpc), | |
18073 | sect_offset_str (sect_off), | |
9c541725 | 18074 | objfile_name (objfile)); |
9373cf26 JK |
18075 | } |
18076 | else | |
48fbe735 | 18077 | has_pc_info = 1; |
9373cf26 | 18078 | } |
85cbf3d3 | 18079 | |
c906108c SS |
18080 | return info_ptr; |
18081 | } | |
18082 | ||
72bf9492 DJ |
18083 | /* Find a cached partial DIE at OFFSET in CU. */ |
18084 | ||
d590ff25 YQ |
18085 | struct partial_die_info * |
18086 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
18087 | { |
18088 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 18089 | struct partial_die_info part_die (sect_off); |
72bf9492 | 18090 | |
9a3c8263 | 18091 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 18092 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 18093 | to_underlying (sect_off))); |
72bf9492 | 18094 | |
72bf9492 DJ |
18095 | return lookup_die; |
18096 | } | |
18097 | ||
348e048f DE |
18098 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
18099 | except in the case of .debug_types DIEs which do not reference | |
18100 | outside their CU (they do however referencing other types via | |
55f1336d | 18101 | DW_FORM_ref_sig8). */ |
72bf9492 | 18102 | |
122cf0f2 | 18103 | static const struct cu_partial_die_info |
9c541725 | 18104 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 18105 | { |
518817b3 SM |
18106 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18107 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18108 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5afb4e99 DJ |
18109 | struct dwarf2_per_cu_data *per_cu = NULL; |
18110 | struct partial_die_info *pd = NULL; | |
72bf9492 | 18111 | |
36586728 | 18112 | if (offset_in_dwz == cu->per_cu->is_dwz |
4057dfde | 18113 | && cu->header.offset_in_cu_p (sect_off)) |
5afb4e99 | 18114 | { |
d590ff25 | 18115 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 18116 | if (pd != NULL) |
fb816e8b | 18117 | return { cu, pd }; |
0d99eb77 DE |
18118 | /* We missed recording what we needed. |
18119 | Load all dies and try again. */ | |
18120 | per_cu = cu->per_cu; | |
5afb4e99 | 18121 | } |
0d99eb77 DE |
18122 | else |
18123 | { | |
18124 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 18125 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 18126 | { |
9d8780f0 SM |
18127 | error (_("Dwarf Error: Type Unit at offset %s contains" |
18128 | " external reference to offset %s [in module %s].\n"), | |
18129 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
18130 | bfd_get_filename (objfile->obfd)); |
18131 | } | |
9c541725 | 18132 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 18133 | dwarf2_per_objfile); |
72bf9492 | 18134 | |
0d99eb77 DE |
18135 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
18136 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 18137 | |
0d99eb77 | 18138 | per_cu->cu->last_used = 0; |
d590ff25 | 18139 | pd = per_cu->cu->find_partial_die (sect_off); |
0d99eb77 | 18140 | } |
5afb4e99 | 18141 | |
dee91e82 DE |
18142 | /* If we didn't find it, and not all dies have been loaded, |
18143 | load them all and try again. */ | |
18144 | ||
5afb4e99 DJ |
18145 | if (pd == NULL && per_cu->load_all_dies == 0) |
18146 | { | |
5afb4e99 | 18147 | per_cu->load_all_dies = 1; |
fd820528 DE |
18148 | |
18149 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
18150 | THIS_CU->cu may already be in use. So we can't just free it and | |
18151 | replace its DIEs with the ones we read in. Instead, we leave those | |
18152 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
18153 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
18154 | set. */ | |
dee91e82 | 18155 | load_partial_comp_unit (per_cu); |
5afb4e99 | 18156 | |
d590ff25 | 18157 | pd = per_cu->cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18158 | } |
18159 | ||
18160 | if (pd == NULL) | |
18161 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 18162 | _("could not find partial DIE %s " |
3e43a32a | 18163 | "in cache [from module %s]\n"), |
9d8780f0 | 18164 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
fb816e8b | 18165 | return { per_cu->cu, pd }; |
72bf9492 DJ |
18166 | } |
18167 | ||
abc72ce4 DE |
18168 | /* See if we can figure out if the class lives in a namespace. We do |
18169 | this by looking for a member function; its demangled name will | |
18170 | contain namespace info, if there is any. */ | |
18171 | ||
18172 | static void | |
18173 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
18174 | struct dwarf2_cu *cu) | |
18175 | { | |
18176 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
18177 | what template types look like, because the demangler | |
18178 | frequently doesn't give the same name as the debug info. We | |
18179 | could fix this by only using the demangled name to get the | |
18180 | prefix (but see comment in read_structure_type). */ | |
18181 | ||
18182 | struct partial_die_info *real_pdi; | |
18183 | struct partial_die_info *child_pdi; | |
18184 | ||
18185 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
18186 | we should not do this. We'll prepend the parent's fully qualified | |
18187 | name when we create the partial symbol. */ | |
18188 | ||
18189 | real_pdi = struct_pdi; | |
18190 | while (real_pdi->has_specification) | |
fb816e8b | 18191 | { |
122cf0f2 AB |
18192 | auto res = find_partial_die (real_pdi->spec_offset, |
18193 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
18194 | real_pdi = res.pdi; |
18195 | cu = res.cu; | |
18196 | } | |
abc72ce4 DE |
18197 | |
18198 | if (real_pdi->die_parent != NULL) | |
18199 | return; | |
18200 | ||
18201 | for (child_pdi = struct_pdi->die_child; | |
18202 | child_pdi != NULL; | |
18203 | child_pdi = child_pdi->die_sibling) | |
18204 | { | |
18205 | if (child_pdi->tag == DW_TAG_subprogram | |
18206 | && child_pdi->linkage_name != NULL) | |
18207 | { | |
43816ebc TT |
18208 | gdb::unique_xmalloc_ptr<char> actual_class_name |
18209 | (language_class_name_from_physname (cu->language_defn, | |
18210 | child_pdi->linkage_name)); | |
abc72ce4 DE |
18211 | if (actual_class_name != NULL) |
18212 | { | |
518817b3 | 18213 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
be1e3d3e | 18214 | struct_pdi->name = objfile->intern (actual_class_name.get ()); |
abc72ce4 DE |
18215 | } |
18216 | break; | |
18217 | } | |
18218 | } | |
18219 | } | |
18220 | ||
52356b79 YQ |
18221 | void |
18222 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 18223 | { |
abc72ce4 DE |
18224 | /* Once we've fixed up a die, there's no point in doing so again. |
18225 | This also avoids a memory leak if we were to call | |
18226 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 18227 | if (fixup_called) |
abc72ce4 DE |
18228 | return; |
18229 | ||
72bf9492 DJ |
18230 | /* If we found a reference attribute and the DIE has no name, try |
18231 | to find a name in the referred to DIE. */ | |
18232 | ||
52356b79 | 18233 | if (name == NULL && has_specification) |
72bf9492 DJ |
18234 | { |
18235 | struct partial_die_info *spec_die; | |
72bf9492 | 18236 | |
122cf0f2 | 18237 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
18238 | spec_die = res.pdi; |
18239 | cu = res.cu; | |
72bf9492 | 18240 | |
52356b79 | 18241 | spec_die->fixup (cu); |
72bf9492 DJ |
18242 | |
18243 | if (spec_die->name) | |
18244 | { | |
52356b79 | 18245 | name = spec_die->name; |
72bf9492 DJ |
18246 | |
18247 | /* Copy DW_AT_external attribute if it is set. */ | |
18248 | if (spec_die->is_external) | |
52356b79 | 18249 | is_external = spec_die->is_external; |
72bf9492 DJ |
18250 | } |
18251 | } | |
18252 | ||
18253 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 | 18254 | |
52356b79 YQ |
18255 | if (name == NULL && tag == DW_TAG_namespace) |
18256 | name = CP_ANONYMOUS_NAMESPACE_STR; | |
72bf9492 | 18257 | |
abc72ce4 DE |
18258 | /* If there is no parent die to provide a namespace, and there are |
18259 | children, see if we can determine the namespace from their linkage | |
122d1940 | 18260 | name. */ |
abc72ce4 | 18261 | if (cu->language == language_cplus |
fd5866f6 | 18262 | && !cu->per_cu->dwarf2_per_objfile->types.empty () |
52356b79 YQ |
18263 | && die_parent == NULL |
18264 | && has_children | |
18265 | && (tag == DW_TAG_class_type | |
18266 | || tag == DW_TAG_structure_type | |
18267 | || tag == DW_TAG_union_type)) | |
18268 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 18269 | |
53832f31 TT |
18270 | /* GCC might emit a nameless struct or union that has a linkage |
18271 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
52356b79 YQ |
18272 | if (name == NULL |
18273 | && (tag == DW_TAG_class_type | |
18274 | || tag == DW_TAG_interface_type | |
18275 | || tag == DW_TAG_structure_type | |
18276 | || tag == DW_TAG_union_type) | |
18277 | && linkage_name != NULL) | |
53832f31 | 18278 | { |
43816ebc TT |
18279 | gdb::unique_xmalloc_ptr<char> demangled |
18280 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
18281 | if (demangled != nullptr) | |
53832f31 | 18282 | { |
96408a79 SA |
18283 | const char *base; |
18284 | ||
18285 | /* Strip any leading namespaces/classes, keep only the base name. | |
18286 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
18287 | base = strrchr (demangled.get (), ':'); |
18288 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
18289 | base++; |
18290 | else | |
43816ebc | 18291 | base = demangled.get (); |
96408a79 | 18292 | |
518817b3 | 18293 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
be1e3d3e | 18294 | name = objfile->intern (base); |
53832f31 TT |
18295 | } |
18296 | } | |
18297 | ||
52356b79 | 18298 | fixup_called = 1; |
72bf9492 DJ |
18299 | } |
18300 | ||
18a8505e AT |
18301 | /* Process the attributes that had to be skipped in the first round. These |
18302 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
18303 | They could not have been processed in the first round, because at the time | |
18304 | the values of str_offsets_base or addr_base may not have been known. */ | |
18305 | void read_attribute_reprocess (const struct die_reader_specs *reader, | |
18306 | struct attribute *attr) | |
18307 | { | |
18308 | struct dwarf2_cu *cu = reader->cu; | |
18309 | switch (attr->form) | |
18310 | { | |
18311 | case DW_FORM_addrx: | |
18312 | case DW_FORM_GNU_addr_index: | |
18313 | DW_ADDR (attr) = read_addr_index (cu, DW_UNSND (attr)); | |
18314 | break; | |
18315 | case DW_FORM_strx: | |
18316 | case DW_FORM_strx1: | |
18317 | case DW_FORM_strx2: | |
18318 | case DW_FORM_strx3: | |
18319 | case DW_FORM_strx4: | |
18320 | case DW_FORM_GNU_str_index: | |
18321 | { | |
18322 | unsigned int str_index = DW_UNSND (attr); | |
18323 | if (reader->dwo_file != NULL) | |
18324 | { | |
18325 | DW_STRING (attr) = read_dwo_str_index (reader, str_index); | |
18326 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18327 | } | |
18328 | else | |
18329 | { | |
18330 | DW_STRING (attr) = read_stub_str_index (cu, str_index); | |
18331 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18332 | } | |
18333 | break; | |
18334 | } | |
18335 | default: | |
18336 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
18337 | } | |
18338 | } | |
18339 | ||
a8329558 | 18340 | /* Read an attribute value described by an attribute form. */ |
c906108c | 18341 | |
d521ce57 | 18342 | static const gdb_byte * |
dee91e82 DE |
18343 | read_attribute_value (const struct die_reader_specs *reader, |
18344 | struct attribute *attr, unsigned form, | |
18a8505e AT |
18345 | LONGEST implicit_const, const gdb_byte *info_ptr, |
18346 | bool *need_reprocess) | |
c906108c | 18347 | { |
dee91e82 | 18348 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18349 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18350 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18351 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 18352 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
dee91e82 | 18353 | bfd *abfd = reader->abfd; |
e7c27a73 | 18354 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
18355 | unsigned int bytes_read; |
18356 | struct dwarf_block *blk; | |
18a8505e | 18357 | *need_reprocess = false; |
c906108c | 18358 | |
aead7601 | 18359 | attr->form = (enum dwarf_form) form; |
a8329558 | 18360 | switch (form) |
c906108c | 18361 | { |
c906108c | 18362 | case DW_FORM_ref_addr: |
ae411497 | 18363 | if (cu->header.version == 2) |
c8a7a66f TT |
18364 | DW_UNSND (attr) = cu->header.read_address (abfd, info_ptr, |
18365 | &bytes_read); | |
ae411497 | 18366 | else |
8266302d TT |
18367 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, |
18368 | &bytes_read); | |
ae411497 TT |
18369 | info_ptr += bytes_read; |
18370 | break; | |
36586728 | 18371 | case DW_FORM_GNU_ref_alt: |
8266302d | 18372 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
36586728 TT |
18373 | info_ptr += bytes_read; |
18374 | break; | |
ae411497 | 18375 | case DW_FORM_addr: |
c8a7a66f | 18376 | DW_ADDR (attr) = cu->header.read_address (abfd, info_ptr, &bytes_read); |
3e29f34a | 18377 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 18378 | info_ptr += bytes_read; |
c906108c SS |
18379 | break; |
18380 | case DW_FORM_block2: | |
7b5a2f43 | 18381 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18382 | blk->size = read_2_bytes (abfd, info_ptr); |
18383 | info_ptr += 2; | |
18384 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18385 | info_ptr += blk->size; | |
18386 | DW_BLOCK (attr) = blk; | |
18387 | break; | |
18388 | case DW_FORM_block4: | |
7b5a2f43 | 18389 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18390 | blk->size = read_4_bytes (abfd, info_ptr); |
18391 | info_ptr += 4; | |
18392 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18393 | info_ptr += blk->size; | |
18394 | DW_BLOCK (attr) = blk; | |
18395 | break; | |
18396 | case DW_FORM_data2: | |
18397 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
18398 | info_ptr += 2; | |
18399 | break; | |
18400 | case DW_FORM_data4: | |
18401 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
18402 | info_ptr += 4; | |
18403 | break; | |
18404 | case DW_FORM_data8: | |
18405 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
18406 | info_ptr += 8; | |
18407 | break; | |
0224619f JK |
18408 | case DW_FORM_data16: |
18409 | blk = dwarf_alloc_block (cu); | |
18410 | blk->size = 16; | |
18411 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
18412 | info_ptr += 16; | |
18413 | DW_BLOCK (attr) = blk; | |
18414 | break; | |
2dc7f7b3 | 18415 | case DW_FORM_sec_offset: |
8266302d | 18416 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
2dc7f7b3 TT |
18417 | info_ptr += bytes_read; |
18418 | break; | |
c906108c | 18419 | case DW_FORM_string: |
9b1c24c8 | 18420 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 18421 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
18422 | info_ptr += bytes_read; |
18423 | break; | |
4bdf3d34 | 18424 | case DW_FORM_strp: |
36586728 TT |
18425 | if (!cu->per_cu->is_dwz) |
18426 | { | |
ed2dc618 SM |
18427 | DW_STRING (attr) = read_indirect_string (dwarf2_per_objfile, |
18428 | abfd, info_ptr, cu_header, | |
36586728 TT |
18429 | &bytes_read); |
18430 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18431 | info_ptr += bytes_read; | |
18432 | break; | |
18433 | } | |
18434 | /* FALLTHROUGH */ | |
43988095 JK |
18435 | case DW_FORM_line_strp: |
18436 | if (!cu->per_cu->is_dwz) | |
18437 | { | |
86c0bb4c TT |
18438 | DW_STRING (attr) |
18439 | = dwarf2_per_objfile->read_line_string (info_ptr, cu_header, | |
18440 | &bytes_read); | |
43988095 JK |
18441 | DW_STRING_IS_CANONICAL (attr) = 0; |
18442 | info_ptr += bytes_read; | |
18443 | break; | |
18444 | } | |
18445 | /* FALLTHROUGH */ | |
36586728 TT |
18446 | case DW_FORM_GNU_strp_alt: |
18447 | { | |
ed2dc618 | 18448 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
8266302d TT |
18449 | LONGEST str_offset = cu_header->read_offset (abfd, info_ptr, |
18450 | &bytes_read); | |
36586728 | 18451 | |
0314b390 | 18452 | DW_STRING (attr) = dwz->read_string (objfile, str_offset); |
36586728 TT |
18453 | DW_STRING_IS_CANONICAL (attr) = 0; |
18454 | info_ptr += bytes_read; | |
18455 | } | |
4bdf3d34 | 18456 | break; |
2dc7f7b3 | 18457 | case DW_FORM_exprloc: |
c906108c | 18458 | case DW_FORM_block: |
7b5a2f43 | 18459 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18460 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18461 | info_ptr += bytes_read; | |
18462 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18463 | info_ptr += blk->size; | |
18464 | DW_BLOCK (attr) = blk; | |
18465 | break; | |
18466 | case DW_FORM_block1: | |
7b5a2f43 | 18467 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18468 | blk->size = read_1_byte (abfd, info_ptr); |
18469 | info_ptr += 1; | |
18470 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18471 | info_ptr += blk->size; | |
18472 | DW_BLOCK (attr) = blk; | |
18473 | break; | |
18474 | case DW_FORM_data1: | |
18475 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
18476 | info_ptr += 1; | |
18477 | break; | |
18478 | case DW_FORM_flag: | |
18479 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
18480 | info_ptr += 1; | |
18481 | break; | |
2dc7f7b3 TT |
18482 | case DW_FORM_flag_present: |
18483 | DW_UNSND (attr) = 1; | |
18484 | break; | |
c906108c SS |
18485 | case DW_FORM_sdata: |
18486 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
18487 | info_ptr += bytes_read; | |
18488 | break; | |
18489 | case DW_FORM_udata: | |
18a8505e | 18490 | case DW_FORM_rnglistx: |
c906108c SS |
18491 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18492 | info_ptr += bytes_read; | |
18493 | break; | |
18494 | case DW_FORM_ref1: | |
9c541725 | 18495 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18496 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
18497 | info_ptr += 1; |
18498 | break; | |
18499 | case DW_FORM_ref2: | |
9c541725 | 18500 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18501 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
18502 | info_ptr += 2; |
18503 | break; | |
18504 | case DW_FORM_ref4: | |
9c541725 | 18505 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18506 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
18507 | info_ptr += 4; |
18508 | break; | |
613e1657 | 18509 | case DW_FORM_ref8: |
9c541725 | 18510 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18511 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
18512 | info_ptr += 8; |
18513 | break; | |
55f1336d | 18514 | case DW_FORM_ref_sig8: |
ac9ec31b | 18515 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
18516 | info_ptr += 8; |
18517 | break; | |
c906108c | 18518 | case DW_FORM_ref_udata: |
9c541725 | 18519 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18520 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
18521 | info_ptr += bytes_read; |
18522 | break; | |
c906108c | 18523 | case DW_FORM_indirect: |
a8329558 KW |
18524 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18525 | info_ptr += bytes_read; | |
43988095 JK |
18526 | if (form == DW_FORM_implicit_const) |
18527 | { | |
18528 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
18529 | info_ptr += bytes_read; | |
18530 | } | |
18531 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
18a8505e | 18532 | info_ptr, need_reprocess); |
43988095 JK |
18533 | break; |
18534 | case DW_FORM_implicit_const: | |
18535 | DW_SND (attr) = implicit_const; | |
a8329558 | 18536 | break; |
336d760d | 18537 | case DW_FORM_addrx: |
3019eac3 | 18538 | case DW_FORM_GNU_addr_index: |
18a8505e AT |
18539 | *need_reprocess = true; |
18540 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
3019eac3 DE |
18541 | info_ptr += bytes_read; |
18542 | break; | |
cf532bd1 | 18543 | case DW_FORM_strx: |
15f18d14 AT |
18544 | case DW_FORM_strx1: |
18545 | case DW_FORM_strx2: | |
18546 | case DW_FORM_strx3: | |
18547 | case DW_FORM_strx4: | |
3019eac3 | 18548 | case DW_FORM_GNU_str_index: |
3019eac3 | 18549 | { |
15f18d14 AT |
18550 | ULONGEST str_index; |
18551 | if (form == DW_FORM_strx1) | |
18552 | { | |
18553 | str_index = read_1_byte (abfd, info_ptr); | |
18554 | info_ptr += 1; | |
18555 | } | |
18556 | else if (form == DW_FORM_strx2) | |
18557 | { | |
18558 | str_index = read_2_bytes (abfd, info_ptr); | |
18559 | info_ptr += 2; | |
18560 | } | |
18561 | else if (form == DW_FORM_strx3) | |
18562 | { | |
18563 | str_index = read_3_bytes (abfd, info_ptr); | |
18564 | info_ptr += 3; | |
18565 | } | |
18566 | else if (form == DW_FORM_strx4) | |
18567 | { | |
18568 | str_index = read_4_bytes (abfd, info_ptr); | |
18569 | info_ptr += 4; | |
18570 | } | |
18571 | else | |
18572 | { | |
18573 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
18574 | info_ptr += bytes_read; | |
18575 | } | |
18a8505e AT |
18576 | *need_reprocess = true; |
18577 | DW_UNSND (attr) = str_index; | |
18578 | } | |
3019eac3 | 18579 | break; |
c906108c | 18580 | default: |
8a3fe4f8 | 18581 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
18582 | dwarf_form_name (form), |
18583 | bfd_get_filename (abfd)); | |
c906108c | 18584 | } |
28e94949 | 18585 | |
36586728 | 18586 | /* Super hack. */ |
cd6c91b4 | 18587 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
18588 | attr->form = DW_FORM_GNU_ref_alt; |
18589 | ||
28e94949 JB |
18590 | /* We have seen instances where the compiler tried to emit a byte |
18591 | size attribute of -1 which ended up being encoded as an unsigned | |
18592 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
18593 | an object of this size seems pretty unlikely so we can relatively | |
18594 | safely treat these cases as if the size attribute was invalid and | |
18595 | treat them as zero by default. */ | |
18596 | if (attr->name == DW_AT_byte_size | |
18597 | && form == DW_FORM_data4 | |
18598 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
18599 | { |
18600 | complaint | |
b98664d3 | 18601 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
43bbcdc2 | 18602 | hex_string (DW_UNSND (attr))); |
01c66ae6 JB |
18603 | DW_UNSND (attr) = 0; |
18604 | } | |
28e94949 | 18605 | |
c906108c SS |
18606 | return info_ptr; |
18607 | } | |
18608 | ||
a8329558 KW |
18609 | /* Read an attribute described by an abbreviated attribute. */ |
18610 | ||
d521ce57 | 18611 | static const gdb_byte * |
dee91e82 DE |
18612 | read_attribute (const struct die_reader_specs *reader, |
18613 | struct attribute *attr, struct attr_abbrev *abbrev, | |
18a8505e | 18614 | const gdb_byte *info_ptr, bool *need_reprocess) |
a8329558 KW |
18615 | { |
18616 | attr->name = abbrev->name; | |
43988095 | 18617 | return read_attribute_value (reader, attr, abbrev->form, |
18a8505e AT |
18618 | abbrev->implicit_const, info_ptr, |
18619 | need_reprocess); | |
a8329558 KW |
18620 | } |
18621 | ||
43988095 JK |
18622 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ |
18623 | ||
18624 | static const char * | |
ed2dc618 | 18625 | read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4f44ae6c | 18626 | LONGEST str_offset) |
43988095 | 18627 | { |
4f44ae6c TT |
18628 | return dwarf2_per_objfile->str.read_string (dwarf2_per_objfile->objfile, |
18629 | str_offset, "DW_FORM_strp"); | |
c906108c SS |
18630 | } |
18631 | ||
43988095 JK |
18632 | /* Return pointer to string at .debug_str offset as read from BUF. |
18633 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
18634 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
18635 | ||
d521ce57 | 18636 | static const char * |
ed2dc618 SM |
18637 | read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, |
18638 | const gdb_byte *buf, | |
cf2c3c16 TT |
18639 | const struct comp_unit_head *cu_header, |
18640 | unsigned int *bytes_read_ptr) | |
18641 | { | |
8266302d | 18642 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
cf2c3c16 | 18643 | |
4f44ae6c | 18644 | return read_indirect_string_at_offset (dwarf2_per_objfile, str_offset); |
cf2c3c16 TT |
18645 | } |
18646 | ||
86c0bb4c | 18647 | /* See read.h. */ |
43988095 | 18648 | |
86c0bb4c TT |
18649 | const char * |
18650 | dwarf2_per_objfile::read_line_string (const gdb_byte *buf, | |
43988095 JK |
18651 | const struct comp_unit_head *cu_header, |
18652 | unsigned int *bytes_read_ptr) | |
18653 | { | |
86c0bb4c | 18654 | bfd *abfd = objfile->obfd; |
8266302d | 18655 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
43988095 | 18656 | |
86c0bb4c | 18657 | return line_str.read_string (objfile, str_offset, "DW_FORM_line_strp"); |
43988095 JK |
18658 | } |
18659 | ||
3019eac3 | 18660 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 18661 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
18662 | ADDR_SIZE is the size of addresses from the CU header. */ |
18663 | ||
18664 | static CORE_ADDR | |
ed2dc618 | 18665 | read_addr_index_1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e AT |
18666 | unsigned int addr_index, gdb::optional<ULONGEST> addr_base, |
18667 | int addr_size) | |
3019eac3 DE |
18668 | { |
18669 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18670 | bfd *abfd = objfile->obfd; | |
18671 | const gdb_byte *info_ptr; | |
18a8505e | 18672 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 18673 | |
96b79293 | 18674 | dwarf2_per_objfile->addr.read (objfile); |
3019eac3 DE |
18675 | if (dwarf2_per_objfile->addr.buffer == NULL) |
18676 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 18677 | objfile_name (objfile)); |
18a8505e AT |
18678 | if (addr_base_or_zero + addr_index * addr_size |
18679 | >= dwarf2_per_objfile->addr.size) | |
3019eac3 DE |
18680 | error (_("DW_FORM_addr_index pointing outside of " |
18681 | ".debug_addr section [in module %s]"), | |
4262abfb | 18682 | objfile_name (objfile)); |
3019eac3 | 18683 | info_ptr = (dwarf2_per_objfile->addr.buffer |
18a8505e | 18684 | + addr_base_or_zero + addr_index * addr_size); |
3019eac3 DE |
18685 | if (addr_size == 4) |
18686 | return bfd_get_32 (abfd, info_ptr); | |
18687 | else | |
18688 | return bfd_get_64 (abfd, info_ptr); | |
18689 | } | |
18690 | ||
18691 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
18692 | ||
18693 | static CORE_ADDR | |
18694 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
18695 | { | |
518817b3 SM |
18696 | return read_addr_index_1 (cu->per_cu->dwarf2_per_objfile, addr_index, |
18697 | cu->addr_base, cu->header.addr_size); | |
3019eac3 DE |
18698 | } |
18699 | ||
18700 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
18701 | ||
18702 | static CORE_ADDR | |
d521ce57 | 18703 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
18704 | unsigned int *bytes_read) |
18705 | { | |
518817b3 | 18706 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
3019eac3 DE |
18707 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
18708 | ||
18709 | return read_addr_index (cu, addr_index); | |
18710 | } | |
18711 | ||
450a1bfc | 18712 | /* See read.h. */ |
3019eac3 DE |
18713 | |
18714 | CORE_ADDR | |
450a1bfc | 18715 | dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu, unsigned int addr_index) |
3019eac3 | 18716 | { |
ed2dc618 | 18717 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 18718 | struct dwarf2_cu *cu = per_cu->cu; |
18a8505e | 18719 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
18720 | int addr_size; |
18721 | ||
3019eac3 DE |
18722 | /* We need addr_base and addr_size. |
18723 | If we don't have PER_CU->cu, we have to get it. | |
18724 | Nasty, but the alternative is storing the needed info in PER_CU, | |
18725 | which at this point doesn't seem justified: it's not clear how frequently | |
18726 | it would get used and it would increase the size of every PER_CU. | |
18727 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
18728 | so we're not in uncharted territory here. | |
18729 | Alas we need to be a bit more complicated as addr_base is contained | |
18730 | in the DIE. | |
18731 | ||
18732 | We don't need to read the entire CU(/TU). | |
18733 | We just need the header and top level die. | |
a1b64ce1 | 18734 | |
3019eac3 | 18735 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 18736 | For now we skip this optimization. */ |
3019eac3 DE |
18737 | |
18738 | if (cu != NULL) | |
18739 | { | |
18740 | addr_base = cu->addr_base; | |
18741 | addr_size = cu->header.addr_size; | |
18742 | } | |
18743 | else | |
18744 | { | |
6751ebae | 18745 | cutu_reader reader (per_cu, NULL, 0, false); |
c0ab21c2 TT |
18746 | addr_base = reader.cu->addr_base; |
18747 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
18748 | } |
18749 | ||
ed2dc618 SM |
18750 | return read_addr_index_1 (dwarf2_per_objfile, addr_index, addr_base, |
18751 | addr_size); | |
3019eac3 DE |
18752 | } |
18753 | ||
18a8505e AT |
18754 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
18755 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
18756 | DWO file. */ | |
3019eac3 | 18757 | |
d521ce57 | 18758 | static const char * |
18a8505e AT |
18759 | read_str_index (struct dwarf2_cu *cu, |
18760 | struct dwarf2_section_info *str_section, | |
18761 | struct dwarf2_section_info *str_offsets_section, | |
18762 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 18763 | { |
518817b3 SM |
18764 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18765 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 18766 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
c5164cbc | 18767 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 18768 | bfd *abfd = objfile->obfd; |
d521ce57 | 18769 | const gdb_byte *info_ptr; |
3019eac3 | 18770 | ULONGEST str_offset; |
cf532bd1 | 18771 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 18772 | |
96b79293 TT |
18773 | str_section->read (objfile); |
18774 | str_offsets_section->read (objfile); | |
73869dc2 | 18775 | if (str_section->buffer == NULL) |
18a8505e | 18776 | error (_("%s used without %s section" |
9d8780f0 | 18777 | " in CU at offset %s [in module %s]"), |
96b79293 | 18778 | form_name, str_section->get_name (), |
18a8505e | 18779 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 18780 | if (str_offsets_section->buffer == NULL) |
18a8505e | 18781 | error (_("%s used without %s section" |
9d8780f0 | 18782 | " in CU at offset %s [in module %s]"), |
96b79293 | 18783 | form_name, str_section->get_name (), |
18a8505e | 18784 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 18785 | info_ptr = (str_offsets_section->buffer |
18a8505e | 18786 | + str_offsets_base |
3019eac3 DE |
18787 | + str_index * cu->header.offset_size); |
18788 | if (cu->header.offset_size == 4) | |
18789 | str_offset = bfd_get_32 (abfd, info_ptr); | |
18790 | else | |
18791 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 18792 | if (str_offset >= str_section->size) |
57d63ce2 | 18793 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
18794 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
18795 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 18796 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
18797 | } |
18798 | ||
18a8505e AT |
18799 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
18800 | ||
18801 | static const char * | |
18802 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
18803 | { | |
18804 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
18805 | ? reader->cu->header.addr_size : 0; | |
18806 | return read_str_index (reader->cu, | |
18807 | &reader->dwo_file->sections.str, | |
18808 | &reader->dwo_file->sections.str_offsets, | |
18809 | str_offsets_base, str_index); | |
18810 | } | |
18811 | ||
18812 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
18813 | ||
18814 | static const char * | |
18815 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
18816 | { | |
18817 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; | |
18818 | const char *objf_name = objfile_name (objfile); | |
18819 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
18820 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
18821 | ||
18822 | if (!cu->str_offsets_base.has_value ()) | |
18823 | error (_("%s used in Fission stub without %s" | |
18824 | " in CU at offset 0x%lx [in module %s]"), | |
18825 | form_name, str_offsets_attr_name, | |
18826 | (long) cu->header.offset_size, objf_name); | |
18827 | ||
18828 | return read_str_index (cu, | |
18829 | &cu->per_cu->dwarf2_per_objfile->str, | |
18830 | &cu->per_cu->dwarf2_per_objfile->str_offsets, | |
18831 | *cu->str_offsets_base, str_index); | |
18832 | } | |
18833 | ||
3019eac3 DE |
18834 | /* Return the length of an LEB128 number in BUF. */ |
18835 | ||
18836 | static int | |
18837 | leb128_size (const gdb_byte *buf) | |
18838 | { | |
18839 | const gdb_byte *begin = buf; | |
18840 | gdb_byte byte; | |
18841 | ||
18842 | while (1) | |
18843 | { | |
18844 | byte = *buf++; | |
18845 | if ((byte & 128) == 0) | |
18846 | return buf - begin; | |
18847 | } | |
18848 | } | |
18849 | ||
c906108c | 18850 | static void |
e142c38c | 18851 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
18852 | { |
18853 | switch (lang) | |
18854 | { | |
18855 | case DW_LANG_C89: | |
76bee0cc | 18856 | case DW_LANG_C99: |
0cfd832f | 18857 | case DW_LANG_C11: |
c906108c | 18858 | case DW_LANG_C: |
d1be3247 | 18859 | case DW_LANG_UPC: |
e142c38c | 18860 | cu->language = language_c; |
c906108c | 18861 | break; |
9c37b5ae | 18862 | case DW_LANG_Java: |
c906108c | 18863 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
18864 | case DW_LANG_C_plus_plus_11: |
18865 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 18866 | cu->language = language_cplus; |
c906108c | 18867 | break; |
6aecb9c2 JB |
18868 | case DW_LANG_D: |
18869 | cu->language = language_d; | |
18870 | break; | |
c906108c SS |
18871 | case DW_LANG_Fortran77: |
18872 | case DW_LANG_Fortran90: | |
b21b22e0 | 18873 | case DW_LANG_Fortran95: |
f7de9aab MW |
18874 | case DW_LANG_Fortran03: |
18875 | case DW_LANG_Fortran08: | |
e142c38c | 18876 | cu->language = language_fortran; |
c906108c | 18877 | break; |
a766d390 DE |
18878 | case DW_LANG_Go: |
18879 | cu->language = language_go; | |
18880 | break; | |
c906108c | 18881 | case DW_LANG_Mips_Assembler: |
e142c38c | 18882 | cu->language = language_asm; |
c906108c SS |
18883 | break; |
18884 | case DW_LANG_Ada83: | |
8aaf0b47 | 18885 | case DW_LANG_Ada95: |
bc5f45f8 JB |
18886 | cu->language = language_ada; |
18887 | break; | |
72019c9c GM |
18888 | case DW_LANG_Modula2: |
18889 | cu->language = language_m2; | |
18890 | break; | |
fe8e67fd PM |
18891 | case DW_LANG_Pascal83: |
18892 | cu->language = language_pascal; | |
18893 | break; | |
22566fbd DJ |
18894 | case DW_LANG_ObjC: |
18895 | cu->language = language_objc; | |
18896 | break; | |
c44af4eb TT |
18897 | case DW_LANG_Rust: |
18898 | case DW_LANG_Rust_old: | |
18899 | cu->language = language_rust; | |
18900 | break; | |
c906108c SS |
18901 | case DW_LANG_Cobol74: |
18902 | case DW_LANG_Cobol85: | |
c906108c | 18903 | default: |
e142c38c | 18904 | cu->language = language_minimal; |
c906108c SS |
18905 | break; |
18906 | } | |
e142c38c | 18907 | cu->language_defn = language_def (cu->language); |
c906108c SS |
18908 | } |
18909 | ||
18910 | /* Return the named attribute or NULL if not there. */ | |
18911 | ||
18912 | static struct attribute * | |
e142c38c | 18913 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 18914 | { |
a48e046c | 18915 | for (;;) |
c906108c | 18916 | { |
a48e046c TT |
18917 | unsigned int i; |
18918 | struct attribute *spec = NULL; | |
18919 | ||
18920 | for (i = 0; i < die->num_attrs; ++i) | |
18921 | { | |
18922 | if (die->attrs[i].name == name) | |
18923 | return &die->attrs[i]; | |
18924 | if (die->attrs[i].name == DW_AT_specification | |
18925 | || die->attrs[i].name == DW_AT_abstract_origin) | |
18926 | spec = &die->attrs[i]; | |
18927 | } | |
18928 | ||
18929 | if (!spec) | |
18930 | break; | |
c906108c | 18931 | |
f2f0e013 | 18932 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 18933 | } |
c5aa993b | 18934 | |
c906108c SS |
18935 | return NULL; |
18936 | } | |
18937 | ||
7d45c7c3 KB |
18938 | /* Return the string associated with a string-typed attribute, or NULL if it |
18939 | is either not found or is of an incorrect type. */ | |
18940 | ||
18941 | static const char * | |
18942 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
18943 | { | |
18944 | struct attribute *attr; | |
18945 | const char *str = NULL; | |
18946 | ||
18947 | attr = dwarf2_attr (die, name, cu); | |
18948 | ||
18949 | if (attr != NULL) | |
18950 | { | |
43988095 | 18951 | if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp |
b3340438 | 18952 | || attr->form == DW_FORM_string |
cf532bd1 | 18953 | || attr->form == DW_FORM_strx |
8fe0f950 AT |
18954 | || attr->form == DW_FORM_strx1 |
18955 | || attr->form == DW_FORM_strx2 | |
18956 | || attr->form == DW_FORM_strx3 | |
18957 | || attr->form == DW_FORM_strx4 | |
b3340438 | 18958 | || attr->form == DW_FORM_GNU_str_index |
16eb6b2d | 18959 | || attr->form == DW_FORM_GNU_strp_alt) |
7d45c7c3 KB |
18960 | str = DW_STRING (attr); |
18961 | else | |
b98664d3 | 18962 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
18963 | "DIE at %s in module %s"), |
18964 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
518817b3 | 18965 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
7d45c7c3 KB |
18966 | } |
18967 | ||
18968 | return str; | |
18969 | } | |
18970 | ||
a084a2a6 | 18971 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 18972 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
18973 | static const char * |
18974 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
18975 | { | |
18976 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
18977 | if (dwo_name == nullptr) | |
18978 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
18979 | return dwo_name; | |
18980 | } | |
18981 | ||
05cf31d1 JB |
18982 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
18983 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 18984 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
18985 | |
18986 | static int | |
18987 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
18988 | { | |
18989 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
18990 | ||
18991 | return (attr && DW_UNSND (attr)); | |
18992 | } | |
18993 | ||
3ca72b44 | 18994 | static int |
e142c38c | 18995 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 18996 | { |
05cf31d1 JB |
18997 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
18998 | which value is non-zero. However, we have to be careful with | |
18999 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
19000 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
19001 | end up accidently finding a declaration attribute that belongs | |
19002 | to a different DIE referenced by the specification attribute, | |
19003 | even though the given DIE does not have a declaration attribute. */ | |
19004 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
19005 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
19006 | } |
19007 | ||
63d06c5c | 19008 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 19009 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
19010 | containing the return value on output. If there is no |
19011 | specification, but there is an abstract origin, that is | |
19012 | returned. */ | |
63d06c5c DC |
19013 | |
19014 | static struct die_info * | |
f2f0e013 | 19015 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 19016 | { |
f2f0e013 DJ |
19017 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
19018 | *spec_cu); | |
63d06c5c | 19019 | |
edb3359d DJ |
19020 | if (spec_attr == NULL) |
19021 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
19022 | ||
63d06c5c DC |
19023 | if (spec_attr == NULL) |
19024 | return NULL; | |
19025 | else | |
f2f0e013 | 19026 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 19027 | } |
c906108c | 19028 | |
527f3840 JK |
19029 | /* Stub for free_line_header to match void * callback types. */ |
19030 | ||
19031 | static void | |
19032 | free_line_header_voidp (void *arg) | |
19033 | { | |
9a3c8263 | 19034 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 19035 | |
fff8551c | 19036 | delete lh; |
527f3840 JK |
19037 | } |
19038 | ||
83769d0b | 19039 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
19040 | |
19041 | static struct dwarf2_section_info * | |
19042 | get_debug_line_section (struct dwarf2_cu *cu) | |
19043 | { | |
19044 | struct dwarf2_section_info *section; | |
518817b3 SM |
19045 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19046 | = cu->per_cu->dwarf2_per_objfile; | |
36586728 TT |
19047 | |
19048 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
19049 | DWO file. */ | |
19050 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
19051 | section = &cu->dwo_unit->dwo_file->sections.line; | |
19052 | else if (cu->per_cu->is_dwz) | |
19053 | { | |
ed2dc618 | 19054 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
19055 | |
19056 | section = &dwz->line; | |
19057 | } | |
19058 | else | |
19059 | section = &dwarf2_per_objfile->line; | |
19060 | ||
19061 | return section; | |
19062 | } | |
19063 | ||
debd256d | 19064 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 19065 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 19066 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
19067 | Returns NULL if there is a problem reading the header, e.g., if it |
19068 | has a version we don't understand. | |
debd256d JB |
19069 | |
19070 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
19071 | the returned object point into the dwarf line section buffer, |
19072 | and must not be freed. */ | |
ae2de4f8 | 19073 | |
fff8551c | 19074 | static line_header_up |
9c541725 | 19075 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 19076 | { |
3019eac3 | 19077 | struct dwarf2_section_info *section; |
518817b3 SM |
19078 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19079 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 19080 | |
36586728 | 19081 | section = get_debug_line_section (cu); |
96b79293 | 19082 | section->read (dwarf2_per_objfile->objfile); |
3019eac3 | 19083 | if (section->buffer == NULL) |
debd256d | 19084 | { |
3019eac3 | 19085 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 19086 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 19087 | else |
b98664d3 | 19088 | complaint (_("missing .debug_line section")); |
debd256d JB |
19089 | return 0; |
19090 | } | |
19091 | ||
0df7ad3a TT |
19092 | return dwarf_decode_line_header (sect_off, cu->per_cu->is_dwz, |
19093 | dwarf2_per_objfile, section, | |
19094 | &cu->header); | |
debd256d | 19095 | } |
c906108c | 19096 | |
c6da4cef | 19097 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 19098 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 19099 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
19100 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
19101 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 19102 | |
d521ce57 | 19103 | static const char * |
7ba99d21 | 19104 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 19105 | const dwarf2_psymtab *pst, |
c89b44cd TT |
19106 | const char *comp_dir, |
19107 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 19108 | { |
d521ce57 TT |
19109 | const char *include_name = fe.name; |
19110 | const char *include_name_to_compare = include_name; | |
72b9f47f | 19111 | const char *pst_filename; |
c6da4cef DE |
19112 | int file_is_pst; |
19113 | ||
8c43009f | 19114 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 19115 | |
c89b44cd | 19116 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
19117 | if (!IS_ABSOLUTE_PATH (include_name) |
19118 | && (dir_name != NULL || comp_dir != NULL)) | |
19119 | { | |
19120 | /* Avoid creating a duplicate psymtab for PST. | |
19121 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
19122 | Before we do the comparison, however, we need to account | |
19123 | for DIR_NAME and COMP_DIR. | |
19124 | First prepend dir_name (if non-NULL). If we still don't | |
19125 | have an absolute path prepend comp_dir (if non-NULL). | |
19126 | However, the directory we record in the include-file's | |
19127 | psymtab does not contain COMP_DIR (to match the | |
19128 | corresponding symtab(s)). | |
19129 | ||
19130 | Example: | |
19131 | ||
19132 | bash$ cd /tmp | |
19133 | bash$ gcc -g ./hello.c | |
19134 | include_name = "hello.c" | |
19135 | dir_name = "." | |
19136 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
19137 | DW_AT_name = "./hello.c" |
19138 | ||
19139 | */ | |
c6da4cef DE |
19140 | |
19141 | if (dir_name != NULL) | |
19142 | { | |
c89b44cd TT |
19143 | name_holder->reset (concat (dir_name, SLASH_STRING, |
19144 | include_name, (char *) NULL)); | |
19145 | include_name = name_holder->get (); | |
c6da4cef | 19146 | include_name_to_compare = include_name; |
c6da4cef DE |
19147 | } |
19148 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
19149 | { | |
c89b44cd TT |
19150 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
19151 | include_name, (char *) NULL)); | |
19152 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
19153 | } |
19154 | } | |
19155 | ||
19156 | pst_filename = pst->filename; | |
c89b44cd | 19157 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
19158 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
19159 | { | |
c89b44cd TT |
19160 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
19161 | pst_filename, (char *) NULL)); | |
19162 | pst_filename = copied_name.get (); | |
c6da4cef DE |
19163 | } |
19164 | ||
1e3fad37 | 19165 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 19166 | |
c6da4cef DE |
19167 | if (file_is_pst) |
19168 | return NULL; | |
19169 | return include_name; | |
19170 | } | |
19171 | ||
d9b3de22 DE |
19172 | /* State machine to track the state of the line number program. */ |
19173 | ||
6f77053d | 19174 | class lnp_state_machine |
d9b3de22 | 19175 | { |
6f77053d PA |
19176 | public: |
19177 | /* Initialize a machine state for the start of a line number | |
19178 | program. */ | |
804d2729 TT |
19179 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
19180 | bool record_lines_p); | |
6f77053d | 19181 | |
8c43009f PA |
19182 | file_entry *current_file () |
19183 | { | |
19184 | /* lh->file_names is 0-based, but the file name numbers in the | |
19185 | statement program are 1-based. */ | |
6f77053d PA |
19186 | return m_line_header->file_name_at (m_file); |
19187 | } | |
19188 | ||
19189 | /* Record the line in the state machine. END_SEQUENCE is true if | |
19190 | we're processing the end of a sequence. */ | |
19191 | void record_line (bool end_sequence); | |
19192 | ||
7ab6656f OJ |
19193 | /* Check ADDRESS is zero and less than UNRELOCATED_LOWPC and if true |
19194 | nop-out rest of the lines in this sequence. */ | |
6f77053d PA |
19195 | void check_line_address (struct dwarf2_cu *cu, |
19196 | const gdb_byte *line_ptr, | |
7ab6656f | 19197 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
19198 | |
19199 | void handle_set_discriminator (unsigned int discriminator) | |
19200 | { | |
19201 | m_discriminator = discriminator; | |
19202 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
19203 | } | |
19204 | ||
19205 | /* Handle DW_LNE_set_address. */ | |
19206 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
19207 | { | |
19208 | m_op_index = 0; | |
19209 | address += baseaddr; | |
19210 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
19211 | } | |
19212 | ||
19213 | /* Handle DW_LNS_advance_pc. */ | |
19214 | void handle_advance_pc (CORE_ADDR adjust); | |
19215 | ||
19216 | /* Handle a special opcode. */ | |
19217 | void handle_special_opcode (unsigned char op_code); | |
19218 | ||
19219 | /* Handle DW_LNS_advance_line. */ | |
19220 | void handle_advance_line (int line_delta) | |
19221 | { | |
19222 | advance_line (line_delta); | |
19223 | } | |
19224 | ||
19225 | /* Handle DW_LNS_set_file. */ | |
19226 | void handle_set_file (file_name_index file); | |
19227 | ||
19228 | /* Handle DW_LNS_negate_stmt. */ | |
19229 | void handle_negate_stmt () | |
19230 | { | |
19231 | m_is_stmt = !m_is_stmt; | |
19232 | } | |
19233 | ||
19234 | /* Handle DW_LNS_const_add_pc. */ | |
19235 | void handle_const_add_pc (); | |
19236 | ||
19237 | /* Handle DW_LNS_fixed_advance_pc. */ | |
19238 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
19239 | { | |
19240 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
19241 | m_op_index = 0; | |
19242 | } | |
19243 | ||
19244 | /* Handle DW_LNS_copy. */ | |
19245 | void handle_copy () | |
19246 | { | |
19247 | record_line (false); | |
19248 | m_discriminator = 0; | |
19249 | } | |
19250 | ||
19251 | /* Handle DW_LNE_end_sequence. */ | |
19252 | void handle_end_sequence () | |
19253 | { | |
804d2729 | 19254 | m_currently_recording_lines = true; |
6f77053d PA |
19255 | } |
19256 | ||
19257 | private: | |
19258 | /* Advance the line by LINE_DELTA. */ | |
19259 | void advance_line (int line_delta) | |
19260 | { | |
19261 | m_line += line_delta; | |
19262 | ||
19263 | if (line_delta != 0) | |
19264 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
19265 | } |
19266 | ||
804d2729 TT |
19267 | struct dwarf2_cu *m_cu; |
19268 | ||
6f77053d PA |
19269 | gdbarch *m_gdbarch; |
19270 | ||
19271 | /* True if we're recording lines. | |
19272 | Otherwise we're building partial symtabs and are just interested in | |
19273 | finding include files mentioned by the line number program. */ | |
19274 | bool m_record_lines_p; | |
19275 | ||
8c43009f | 19276 | /* The line number header. */ |
6f77053d | 19277 | line_header *m_line_header; |
8c43009f | 19278 | |
6f77053d PA |
19279 | /* These are part of the standard DWARF line number state machine, |
19280 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 19281 | |
6f77053d | 19282 | unsigned char m_op_index = 0; |
7ba99d21 AT |
19283 | /* The line table index of the current file. */ |
19284 | file_name_index m_file = 1; | |
6f77053d PA |
19285 | unsigned int m_line = 1; |
19286 | ||
19287 | /* These are initialized in the constructor. */ | |
19288 | ||
19289 | CORE_ADDR m_address; | |
19290 | bool m_is_stmt; | |
19291 | unsigned int m_discriminator; | |
d9b3de22 DE |
19292 | |
19293 | /* Additional bits of state we need to track. */ | |
19294 | ||
19295 | /* The last file that we called dwarf2_start_subfile for. | |
19296 | This is only used for TLLs. */ | |
6f77053d | 19297 | unsigned int m_last_file = 0; |
d9b3de22 | 19298 | /* The last file a line number was recorded for. */ |
6f77053d | 19299 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 19300 | |
804d2729 TT |
19301 | /* When true, record the lines we decode. */ |
19302 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
19303 | |
19304 | /* The last line number that was recorded, used to coalesce | |
19305 | consecutive entries for the same line. This can happen, for | |
19306 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
19307 | unsigned int m_last_line = 0; |
19308 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 19309 | }; |
d9b3de22 | 19310 | |
6f77053d PA |
19311 | void |
19312 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
19313 | { | |
19314 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
19315 | / m_line_header->maximum_ops_per_instruction) | |
19316 | * m_line_header->minimum_instruction_length); | |
19317 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
19318 | m_op_index = ((m_op_index + adjust) | |
19319 | % m_line_header->maximum_ops_per_instruction); | |
19320 | } | |
d9b3de22 | 19321 | |
6f77053d PA |
19322 | void |
19323 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 19324 | { |
6f77053d | 19325 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
258bf0ee RB |
19326 | unsigned char adj_opcode_d = adj_opcode / m_line_header->line_range; |
19327 | unsigned char adj_opcode_r = adj_opcode % m_line_header->line_range; | |
19328 | CORE_ADDR addr_adj = (((m_op_index + adj_opcode_d) | |
6f77053d PA |
19329 | / m_line_header->maximum_ops_per_instruction) |
19330 | * m_line_header->minimum_instruction_length); | |
19331 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
258bf0ee | 19332 | m_op_index = ((m_op_index + adj_opcode_d) |
6f77053d | 19333 | % m_line_header->maximum_ops_per_instruction); |
d9b3de22 | 19334 | |
258bf0ee | 19335 | int line_delta = m_line_header->line_base + adj_opcode_r; |
6f77053d PA |
19336 | advance_line (line_delta); |
19337 | record_line (false); | |
19338 | m_discriminator = 0; | |
19339 | } | |
d9b3de22 | 19340 | |
6f77053d PA |
19341 | void |
19342 | lnp_state_machine::handle_set_file (file_name_index file) | |
19343 | { | |
19344 | m_file = file; | |
19345 | ||
19346 | const file_entry *fe = current_file (); | |
19347 | if (fe == NULL) | |
19348 | dwarf2_debug_line_missing_file_complaint (); | |
19349 | else if (m_record_lines_p) | |
19350 | { | |
19351 | const char *dir = fe->include_dir (m_line_header); | |
19352 | ||
c24bdb02 | 19353 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 19354 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 19355 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
19356 | } |
19357 | } | |
19358 | ||
19359 | void | |
19360 | lnp_state_machine::handle_const_add_pc () | |
19361 | { | |
19362 | CORE_ADDR adjust | |
19363 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
19364 | ||
19365 | CORE_ADDR addr_adj | |
19366 | = (((m_op_index + adjust) | |
19367 | / m_line_header->maximum_ops_per_instruction) | |
19368 | * m_line_header->minimum_instruction_length); | |
19369 | ||
19370 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
19371 | m_op_index = ((m_op_index + adjust) | |
19372 | % m_line_header->maximum_ops_per_instruction); | |
19373 | } | |
d9b3de22 | 19374 | |
a05a36a5 DE |
19375 | /* Return non-zero if we should add LINE to the line number table. |
19376 | LINE is the line to add, LAST_LINE is the last line that was added, | |
19377 | LAST_SUBFILE is the subfile for LAST_LINE. | |
19378 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
19379 | had a non-zero discriminator. | |
19380 | ||
19381 | We have to be careful in the presence of discriminators. | |
19382 | E.g., for this line: | |
19383 | ||
19384 | for (i = 0; i < 100000; i++); | |
19385 | ||
19386 | clang can emit four line number entries for that one line, | |
19387 | each with a different discriminator. | |
19388 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
19389 | ||
19390 | However, we want gdb to coalesce all four entries into one. | |
19391 | Otherwise the user could stepi into the middle of the line and | |
19392 | gdb would get confused about whether the pc really was in the | |
19393 | middle of the line. | |
19394 | ||
19395 | Things are further complicated by the fact that two consecutive | |
19396 | line number entries for the same line is a heuristic used by gcc | |
19397 | to denote the end of the prologue. So we can't just discard duplicate | |
19398 | entries, we have to be selective about it. The heuristic we use is | |
19399 | that we only collapse consecutive entries for the same line if at least | |
19400 | one of those entries has a non-zero discriminator. PR 17276. | |
19401 | ||
19402 | Note: Addresses in the line number state machine can never go backwards | |
19403 | within one sequence, thus this coalescing is ok. */ | |
19404 | ||
19405 | static int | |
804d2729 TT |
19406 | dwarf_record_line_p (struct dwarf2_cu *cu, |
19407 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
19408 | int line_has_non_zero_discriminator, |
19409 | struct subfile *last_subfile) | |
19410 | { | |
c24bdb02 | 19411 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
19412 | return 1; |
19413 | if (line != last_line) | |
19414 | return 1; | |
19415 | /* Same line for the same file that we've seen already. | |
19416 | As a last check, for pr 17276, only record the line if the line | |
19417 | has never had a non-zero discriminator. */ | |
19418 | if (!line_has_non_zero_discriminator) | |
19419 | return 1; | |
19420 | return 0; | |
19421 | } | |
19422 | ||
804d2729 TT |
19423 | /* Use the CU's builder to record line number LINE beginning at |
19424 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
19425 | |
19426 | static void | |
d9b3de22 | 19427 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
8c95582d | 19428 | unsigned int line, CORE_ADDR address, bool is_stmt, |
804d2729 | 19429 | struct dwarf2_cu *cu) |
252a6764 DE |
19430 | { |
19431 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
19432 | ||
27e0867f DE |
19433 | if (dwarf_line_debug) |
19434 | { | |
19435 | fprintf_unfiltered (gdb_stdlog, | |
19436 | "Recording line %u, file %s, address %s\n", | |
19437 | line, lbasename (subfile->name), | |
19438 | paddress (gdbarch, address)); | |
19439 | } | |
19440 | ||
804d2729 | 19441 | if (cu != nullptr) |
8c95582d | 19442 | cu->get_builder ()->record_line (subfile, line, addr, is_stmt); |
252a6764 DE |
19443 | } |
19444 | ||
19445 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
19446 | Mark the end of a set of line number records. | |
d9b3de22 | 19447 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
19448 | If SUBFILE is NULL the request is ignored. */ |
19449 | ||
19450 | static void | |
19451 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 19452 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 19453 | { |
27e0867f DE |
19454 | if (subfile == NULL) |
19455 | return; | |
19456 | ||
19457 | if (dwarf_line_debug) | |
19458 | { | |
19459 | fprintf_unfiltered (gdb_stdlog, | |
19460 | "Finishing current line, file %s, address %s\n", | |
19461 | lbasename (subfile->name), | |
19462 | paddress (gdbarch, address)); | |
19463 | } | |
19464 | ||
8c95582d | 19465 | dwarf_record_line_1 (gdbarch, subfile, 0, address, true, cu); |
d9b3de22 DE |
19466 | } |
19467 | ||
6f77053d PA |
19468 | void |
19469 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 19470 | { |
d9b3de22 DE |
19471 | if (dwarf_line_debug) |
19472 | { | |
19473 | fprintf_unfiltered (gdb_stdlog, | |
19474 | "Processing actual line %u: file %u," | |
94a72be7 | 19475 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 19476 | m_line, m_file, |
6f77053d | 19477 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
19478 | m_is_stmt, m_discriminator, |
19479 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
19480 | } |
19481 | ||
6f77053d | 19482 | file_entry *fe = current_file (); |
8c43009f PA |
19483 | |
19484 | if (fe == NULL) | |
d9b3de22 DE |
19485 | dwarf2_debug_line_missing_file_complaint (); |
19486 | /* For now we ignore lines not starting on an instruction boundary. | |
19487 | But not when processing end_sequence for compatibility with the | |
19488 | previous version of the code. */ | |
6f77053d | 19489 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 19490 | { |
8c43009f | 19491 | fe->included_p = 1; |
8c95582d | 19492 | if (m_record_lines_p) |
d9b3de22 | 19493 | { |
c24bdb02 | 19494 | if (m_last_subfile != m_cu->get_builder ()->get_current_subfile () |
804d2729 | 19495 | || end_sequence) |
d9b3de22 | 19496 | { |
804d2729 TT |
19497 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
19498 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
19499 | } |
19500 | ||
19501 | if (!end_sequence) | |
19502 | { | |
8c95582d AB |
19503 | bool is_stmt = producer_is_codewarrior (m_cu) || m_is_stmt; |
19504 | ||
804d2729 | 19505 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
19506 | m_line_has_non_zero_discriminator, |
19507 | m_last_subfile)) | |
d9b3de22 | 19508 | { |
c24bdb02 | 19509 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 19510 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 19511 | builder->get_current_subfile (), |
8c95582d | 19512 | m_line, m_address, is_stmt, |
804d2729 | 19513 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 19514 | } |
c24bdb02 | 19515 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 19516 | m_last_line = m_line; |
d9b3de22 DE |
19517 | } |
19518 | } | |
19519 | } | |
19520 | } | |
19521 | ||
804d2729 TT |
19522 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
19523 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 19524 | { |
804d2729 | 19525 | m_cu = cu; |
6f77053d PA |
19526 | m_gdbarch = arch; |
19527 | m_record_lines_p = record_lines_p; | |
19528 | m_line_header = lh; | |
d9b3de22 | 19529 | |
804d2729 | 19530 | m_currently_recording_lines = true; |
d9b3de22 | 19531 | |
d9b3de22 DE |
19532 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
19533 | was a line entry for it so that the backend has a chance to adjust it | |
19534 | and also record it in case it needs it. This is currently used by MIPS | |
19535 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
19536 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
19537 | m_is_stmt = lh->default_is_stmt; | |
19538 | m_discriminator = 0; | |
252a6764 DE |
19539 | } |
19540 | ||
6f77053d PA |
19541 | void |
19542 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
19543 | const gdb_byte *line_ptr, | |
7ab6656f | 19544 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 19545 | { |
7ab6656f OJ |
19546 | /* If ADDRESS < UNRELOCATED_LOWPC then it's not a usable value, it's outside |
19547 | the pc range of the CU. However, we restrict the test to only ADDRESS | |
19548 | values of zero to preserve GDB's previous behaviour which is to handle | |
19549 | the specific case of a function being GC'd by the linker. */ | |
924c2928 | 19550 | |
7ab6656f | 19551 | if (address == 0 && address < unrelocated_lowpc) |
924c2928 DE |
19552 | { |
19553 | /* This line table is for a function which has been | |
19554 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
19555 | ||
518817b3 | 19556 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
924c2928 DE |
19557 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
19558 | ||
b98664d3 | 19559 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 19560 | line_offset, objfile_name (objfile)); |
804d2729 TT |
19561 | m_currently_recording_lines = false; |
19562 | /* Note: m_currently_recording_lines is left as false until we see | |
19563 | DW_LNE_end_sequence. */ | |
924c2928 DE |
19564 | } |
19565 | } | |
19566 | ||
f3f5162e | 19567 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
19568 | Process the line number information in LH. |
19569 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
19570 | program in order to set included_p for every referenced header. */ | |
debd256d | 19571 | |
c906108c | 19572 | static void |
43f3e411 DE |
19573 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
19574 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 19575 | { |
d521ce57 TT |
19576 | const gdb_byte *line_ptr, *extended_end; |
19577 | const gdb_byte *line_end; | |
a8c50c1f | 19578 | unsigned int bytes_read, extended_len; |
699ca60a | 19579 | unsigned char op_code, extended_op; |
e142c38c | 19580 | CORE_ADDR baseaddr; |
518817b3 | 19581 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 19582 | bfd *abfd = objfile->obfd; |
fbf65064 | 19583 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
6f77053d PA |
19584 | /* True if we're recording line info (as opposed to building partial |
19585 | symtabs and just interested in finding include files mentioned by | |
19586 | the line number program). */ | |
19587 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 19588 | |
b3b3bada | 19589 | baseaddr = objfile->text_section_offset (); |
c906108c | 19590 | |
debd256d JB |
19591 | line_ptr = lh->statement_program_start; |
19592 | line_end = lh->statement_program_end; | |
c906108c SS |
19593 | |
19594 | /* Read the statement sequences until there's nothing left. */ | |
19595 | while (line_ptr < line_end) | |
19596 | { | |
6f77053d PA |
19597 | /* The DWARF line number program state machine. Reset the state |
19598 | machine at the start of each sequence. */ | |
804d2729 | 19599 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 19600 | bool end_sequence = false; |
d9b3de22 | 19601 | |
8c43009f | 19602 | if (record_lines_p) |
c906108c | 19603 | { |
8c43009f PA |
19604 | /* Start a subfile for the current file of the state |
19605 | machine. */ | |
19606 | const file_entry *fe = state_machine.current_file (); | |
19607 | ||
19608 | if (fe != NULL) | |
804d2729 | 19609 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
19610 | } |
19611 | ||
a738430d | 19612 | /* Decode the table. */ |
d9b3de22 | 19613 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
19614 | { |
19615 | op_code = read_1_byte (abfd, line_ptr); | |
19616 | line_ptr += 1; | |
9aa1fe7e | 19617 | |
debd256d | 19618 | if (op_code >= lh->opcode_base) |
6e70227d | 19619 | { |
8e07a239 | 19620 | /* Special opcode. */ |
6f77053d | 19621 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
19622 | } |
19623 | else switch (op_code) | |
c906108c SS |
19624 | { |
19625 | case DW_LNS_extended_op: | |
3e43a32a MS |
19626 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
19627 | &bytes_read); | |
473b7be6 | 19628 | line_ptr += bytes_read; |
a8c50c1f | 19629 | extended_end = line_ptr + extended_len; |
c906108c SS |
19630 | extended_op = read_1_byte (abfd, line_ptr); |
19631 | line_ptr += 1; | |
19632 | switch (extended_op) | |
19633 | { | |
19634 | case DW_LNE_end_sequence: | |
6f77053d PA |
19635 | state_machine.handle_end_sequence (); |
19636 | end_sequence = true; | |
c906108c SS |
19637 | break; |
19638 | case DW_LNE_set_address: | |
d9b3de22 DE |
19639 | { |
19640 | CORE_ADDR address | |
c8a7a66f | 19641 | = cu->header.read_address (abfd, line_ptr, &bytes_read); |
d9b3de22 | 19642 | line_ptr += bytes_read; |
6f77053d PA |
19643 | |
19644 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 19645 | lowpc - baseaddr, address); |
6f77053d | 19646 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 19647 | } |
c906108c SS |
19648 | break; |
19649 | case DW_LNE_define_file: | |
debd256d | 19650 | { |
d521ce57 | 19651 | const char *cur_file; |
ecfb656c PA |
19652 | unsigned int mod_time, length; |
19653 | dir_index dindex; | |
6e70227d | 19654 | |
3e43a32a MS |
19655 | cur_file = read_direct_string (abfd, line_ptr, |
19656 | &bytes_read); | |
debd256d | 19657 | line_ptr += bytes_read; |
ecfb656c | 19658 | dindex = (dir_index) |
debd256d JB |
19659 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
19660 | line_ptr += bytes_read; | |
19661 | mod_time = | |
19662 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
19663 | line_ptr += bytes_read; | |
19664 | length = | |
19665 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
19666 | line_ptr += bytes_read; | |
ecfb656c | 19667 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 19668 | } |
c906108c | 19669 | break; |
d0c6ba3d | 19670 | case DW_LNE_set_discriminator: |
6f77053d PA |
19671 | { |
19672 | /* The discriminator is not interesting to the | |
19673 | debugger; just ignore it. We still need to | |
19674 | check its value though: | |
19675 | if there are consecutive entries for the same | |
19676 | (non-prologue) line we want to coalesce them. | |
19677 | PR 17276. */ | |
19678 | unsigned int discr | |
19679 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
19680 | line_ptr += bytes_read; | |
19681 | ||
19682 | state_machine.handle_set_discriminator (discr); | |
19683 | } | |
d0c6ba3d | 19684 | break; |
c906108c | 19685 | default: |
b98664d3 | 19686 | complaint (_("mangled .debug_line section")); |
debd256d | 19687 | return; |
c906108c | 19688 | } |
a8c50c1f DJ |
19689 | /* Make sure that we parsed the extended op correctly. If e.g. |
19690 | we expected a different address size than the producer used, | |
19691 | we may have read the wrong number of bytes. */ | |
19692 | if (line_ptr != extended_end) | |
19693 | { | |
b98664d3 | 19694 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
19695 | return; |
19696 | } | |
c906108c SS |
19697 | break; |
19698 | case DW_LNS_copy: | |
6f77053d | 19699 | state_machine.handle_copy (); |
c906108c SS |
19700 | break; |
19701 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
19702 | { |
19703 | CORE_ADDR adjust | |
19704 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 19705 | line_ptr += bytes_read; |
6f77053d PA |
19706 | |
19707 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 19708 | } |
c906108c SS |
19709 | break; |
19710 | case DW_LNS_advance_line: | |
a05a36a5 DE |
19711 | { |
19712 | int line_delta | |
19713 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 19714 | line_ptr += bytes_read; |
6f77053d PA |
19715 | |
19716 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 19717 | } |
c906108c SS |
19718 | break; |
19719 | case DW_LNS_set_file: | |
d9b3de22 | 19720 | { |
6f77053d | 19721 | file_name_index file |
ecfb656c PA |
19722 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
19723 | &bytes_read); | |
d9b3de22 | 19724 | line_ptr += bytes_read; |
8c43009f | 19725 | |
6f77053d | 19726 | state_machine.handle_set_file (file); |
d9b3de22 | 19727 | } |
c906108c SS |
19728 | break; |
19729 | case DW_LNS_set_column: | |
0ad93d4f | 19730 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
19731 | line_ptr += bytes_read; |
19732 | break; | |
19733 | case DW_LNS_negate_stmt: | |
6f77053d | 19734 | state_machine.handle_negate_stmt (); |
c906108c SS |
19735 | break; |
19736 | case DW_LNS_set_basic_block: | |
c906108c | 19737 | break; |
c2c6d25f JM |
19738 | /* Add to the address register of the state machine the |
19739 | address increment value corresponding to special opcode | |
a738430d MK |
19740 | 255. I.e., this value is scaled by the minimum |
19741 | instruction length since special opcode 255 would have | |
b021a221 | 19742 | scaled the increment. */ |
c906108c | 19743 | case DW_LNS_const_add_pc: |
6f77053d | 19744 | state_machine.handle_const_add_pc (); |
c906108c SS |
19745 | break; |
19746 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 19747 | { |
6f77053d | 19748 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 19749 | line_ptr += 2; |
6f77053d PA |
19750 | |
19751 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 19752 | } |
c906108c | 19753 | break; |
9aa1fe7e | 19754 | default: |
a738430d MK |
19755 | { |
19756 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 19757 | int i; |
a738430d | 19758 | |
debd256d | 19759 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
19760 | { |
19761 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
19762 | line_ptr += bytes_read; | |
19763 | } | |
19764 | } | |
c906108c SS |
19765 | } |
19766 | } | |
d9b3de22 DE |
19767 | |
19768 | if (!end_sequence) | |
19769 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
19770 | ||
19771 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
19772 | in which case we still finish recording the last line). */ | |
6f77053d | 19773 | state_machine.record_line (true); |
c906108c | 19774 | } |
f3f5162e DE |
19775 | } |
19776 | ||
19777 | /* Decode the Line Number Program (LNP) for the given line_header | |
19778 | structure and CU. The actual information extracted and the type | |
19779 | of structures created from the LNP depends on the value of PST. | |
19780 | ||
19781 | 1. If PST is NULL, then this procedure uses the data from the program | |
19782 | to create all necessary symbol tables, and their linetables. | |
19783 | ||
19784 | 2. If PST is not NULL, this procedure reads the program to determine | |
19785 | the list of files included by the unit represented by PST, and | |
19786 | builds all the associated partial symbol tables. | |
19787 | ||
19788 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
19789 | It is used for relative paths in the line table. | |
19790 | NOTE: When processing partial symtabs (pst != NULL), | |
19791 | comp_dir == pst->dirname. | |
19792 | ||
19793 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
19794 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
19795 | symtab we don't use it in the name of the psymtabs we create. | |
19796 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
19797 | A good testcase for this is mb-inline.exp. |
19798 | ||
527f3840 JK |
19799 | LOWPC is the lowest address in CU (or 0 if not known). |
19800 | ||
19801 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
19802 | for its PC<->lines mapping information. Otherwise only the filename | |
19803 | table is read in. */ | |
f3f5162e DE |
19804 | |
19805 | static void | |
19806 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 19807 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 19808 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 19809 | { |
518817b3 | 19810 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 19811 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 19812 | |
527f3840 JK |
19813 | if (decode_mapping) |
19814 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
19815 | |
19816 | if (decode_for_pst_p) | |
19817 | { | |
aaa75496 JB |
19818 | /* Now that we're done scanning the Line Header Program, we can |
19819 | create the psymtab of each included file. */ | |
7ba99d21 AT |
19820 | for (auto &file_entry : lh->file_names ()) |
19821 | if (file_entry.included_p == 1) | |
aaa75496 | 19822 | { |
c89b44cd | 19823 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 19824 | const char *include_name = |
7ba99d21 AT |
19825 | psymtab_include_file_name (lh, file_entry, pst, |
19826 | comp_dir, &name_holder); | |
c6da4cef | 19827 | if (include_name != NULL) |
aaa75496 JB |
19828 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
19829 | } | |
19830 | } | |
cb1df416 DJ |
19831 | else |
19832 | { | |
19833 | /* Make sure a symtab is created for every file, even files | |
19834 | which contain only variables (i.e. no code with associated | |
19835 | line numbers). */ | |
c24bdb02 KS |
19836 | buildsym_compunit *builder = cu->get_builder (); |
19837 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 19838 | |
7ba99d21 | 19839 | for (auto &fe : lh->file_names ()) |
cb1df416 | 19840 | { |
804d2729 | 19841 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 19842 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 19843 | { |
c24bdb02 | 19844 | builder->get_current_subfile ()->symtab |
804d2729 | 19845 | = allocate_symtab (cust, |
c24bdb02 | 19846 | builder->get_current_subfile ()->name); |
43f3e411 | 19847 | } |
c24bdb02 | 19848 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
19849 | } |
19850 | } | |
c906108c SS |
19851 | } |
19852 | ||
19853 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
19854 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 19855 | or NULL if not known. |
c906108c SS |
19856 | This routine tries to keep line numbers from identical absolute and |
19857 | relative file names in a common subfile. | |
19858 | ||
19859 | Using the `list' example from the GDB testsuite, which resides in | |
19860 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
19861 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
19862 | ||
c5aa993b | 19863 | DW_AT_name: /srcdir/list0.c |
4d663531 | 19864 | DW_AT_comp_dir: /compdir |
357e46e7 | 19865 | files.files[0].name: list0.h |
c5aa993b | 19866 | files.files[0].dir: /srcdir |
357e46e7 | 19867 | files.files[1].name: list0.c |
c5aa993b | 19868 | files.files[1].dir: /srcdir |
c906108c SS |
19869 | |
19870 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
19871 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
19872 | start_subfile will ensure that this happens provided that we pass the | |
19873 | concatenation of files.files[1].dir and files.files[1].name as the | |
19874 | subfile's name. */ | |
c906108c SS |
19875 | |
19876 | static void | |
804d2729 TT |
19877 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
19878 | const char *dirname) | |
c906108c | 19879 | { |
43816ebc | 19880 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 19881 | |
4d663531 | 19882 | /* In order not to lose the line information directory, |
4f1520fb FR |
19883 | we concatenate it to the filename when it makes sense. |
19884 | Note that the Dwarf3 standard says (speaking of filenames in line | |
19885 | information): ``The directory index is ignored for file names | |
19886 | that represent full path names''. Thus ignoring dirname in the | |
19887 | `else' branch below isn't an issue. */ | |
c906108c | 19888 | |
d5166ae1 | 19889 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 19890 | { |
43816ebc TT |
19891 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
19892 | filename = copy.get (); | |
d521ce57 | 19893 | } |
c906108c | 19894 | |
c24bdb02 | 19895 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
19896 | } |
19897 | ||
804d2729 TT |
19898 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
19899 | buildsym_compunit constructor. */ | |
f4dc4d17 | 19900 | |
c24bdb02 KS |
19901 | struct compunit_symtab * |
19902 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
19903 | CORE_ADDR low_pc) | |
f4dc4d17 | 19904 | { |
c24bdb02 | 19905 | gdb_assert (m_builder == nullptr); |
43f3e411 | 19906 | |
c24bdb02 KS |
19907 | m_builder.reset (new struct buildsym_compunit |
19908 | (per_cu->dwarf2_per_objfile->objfile, | |
19909 | name, comp_dir, language, low_pc)); | |
93b8bea4 | 19910 | |
c24bdb02 | 19911 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 19912 | |
c24bdb02 KS |
19913 | get_builder ()->record_debugformat ("DWARF 2"); |
19914 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 19915 | |
c24bdb02 | 19916 | processing_has_namespace_info = false; |
43f3e411 | 19917 | |
c24bdb02 | 19918 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
19919 | } |
19920 | ||
4c2df51b DJ |
19921 | static void |
19922 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 19923 | struct dwarf2_cu *cu) |
4c2df51b | 19924 | { |
518817b3 | 19925 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e7c27a73 DJ |
19926 | struct comp_unit_head *cu_header = &cu->header; |
19927 | ||
4c2df51b DJ |
19928 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
19929 | code here to turn a symbol with DW_AT_external and a | |
19930 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
19931 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
19932 | with some versions of binutils) where shared libraries could have | |
19933 | relocations against symbols in their debug information - the | |
19934 | minimal symbol would have the right address, but the debug info | |
19935 | would not. It's no longer necessary, because we will explicitly | |
19936 | apply relocations when we read in the debug information now. */ | |
19937 | ||
19938 | /* A DW_AT_location attribute with no contents indicates that a | |
19939 | variable has been optimized away. */ | |
4fc6c0d5 | 19940 | if (attr->form_is_block () && DW_BLOCK (attr)->size == 0) |
4c2df51b | 19941 | { |
f1e6e072 | 19942 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
19943 | return; |
19944 | } | |
19945 | ||
19946 | /* Handle one degenerate form of location expression specially, to | |
19947 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
19948 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
19949 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 19950 | |
4fc6c0d5 | 19951 | if (attr->form_is_block () |
3019eac3 DE |
19952 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
19953 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
336d760d AT |
19954 | || ((DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index |
19955 | || DW_BLOCK (attr)->data[0] == DW_OP_addrx) | |
3019eac3 DE |
19956 | && (DW_BLOCK (attr)->size |
19957 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 19958 | { |
891d2f0b | 19959 | unsigned int dummy; |
4c2df51b | 19960 | |
3019eac3 | 19961 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
c8a7a66f TT |
19962 | SET_SYMBOL_VALUE_ADDRESS |
19963 | (sym, cu->header.read_address (objfile->obfd, | |
19964 | DW_BLOCK (attr)->data + 1, | |
19965 | &dummy)); | |
3019eac3 | 19966 | else |
38583298 TT |
19967 | SET_SYMBOL_VALUE_ADDRESS |
19968 | (sym, read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, | |
19969 | &dummy)); | |
f1e6e072 | 19970 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b | 19971 | fixup_symbol_section (sym, objfile); |
6a053cb1 TT |
19972 | SET_SYMBOL_VALUE_ADDRESS |
19973 | (sym, | |
19974 | SYMBOL_VALUE_ADDRESS (sym) | |
19975 | + objfile->section_offsets[SYMBOL_SECTION (sym)]); | |
4c2df51b DJ |
19976 | return; |
19977 | } | |
19978 | ||
19979 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
19980 | expression evaluator, and use LOC_COMPUTED only when necessary | |
19981 | (i.e. when the value of a register or memory location is | |
19982 | referenced, or a thread-local block, etc.). Then again, it might | |
19983 | not be worthwhile. I'm assuming that it isn't unless performance | |
19984 | or memory numbers show me otherwise. */ | |
19985 | ||
f1e6e072 | 19986 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 19987 | |
f1e6e072 | 19988 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 19989 | cu->has_loclist = true; |
4c2df51b DJ |
19990 | } |
19991 | ||
c906108c SS |
19992 | /* Given a pointer to a DWARF information entry, figure out if we need |
19993 | to make a symbol table entry for it, and if so, create a new entry | |
19994 | and return a pointer to it. | |
19995 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
19996 | used the passed type. |
19997 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
19998 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
19999 | |
20000 | static struct symbol * | |
5e2db402 TT |
20001 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
20002 | struct symbol *space) | |
c906108c | 20003 | { |
518817b3 SM |
20004 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20005 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 20006 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 20007 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 20008 | struct symbol *sym = NULL; |
15d034d0 | 20009 | const char *name; |
c906108c SS |
20010 | struct attribute *attr = NULL; |
20011 | struct attribute *attr2 = NULL; | |
e142c38c | 20012 | CORE_ADDR baseaddr; |
e37fd15a SW |
20013 | struct pending **list_to_add = NULL; |
20014 | ||
edb3359d | 20015 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 20016 | |
b3b3bada | 20017 | baseaddr = objfile->text_section_offset (); |
c906108c | 20018 | |
94af9270 | 20019 | name = dwarf2_name (die, cu); |
c906108c SS |
20020 | if (name) |
20021 | { | |
94af9270 | 20022 | const char *linkagename; |
34eaf542 | 20023 | int suppress_add = 0; |
94af9270 | 20024 | |
34eaf542 TT |
20025 | if (space) |
20026 | sym = space; | |
20027 | else | |
e623cf5d | 20028 | sym = allocate_symbol (objfile); |
c906108c | 20029 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
20030 | |
20031 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 20032 | sym->set_language (cu->language, &objfile->objfile_obstack); |
94af9270 | 20033 | linkagename = dwarf2_physname (name, die, cu); |
4d4eaa30 | 20034 | sym->compute_and_set_names (linkagename, false, objfile->per_bfd); |
c906108c | 20035 | |
f55ee35c JK |
20036 | /* Fortran does not have mangling standard and the mangling does differ |
20037 | between gfortran, iFort etc. */ | |
20038 | if (cu->language == language_fortran | |
468c0cbb CB |
20039 | && symbol_get_demangled_name (sym) == NULL) |
20040 | symbol_set_demangled_name (sym, | |
cfc594ee | 20041 | dwarf2_full_name (name, die, cu), |
29df156d | 20042 | NULL); |
f55ee35c | 20043 | |
c906108c | 20044 | /* Default assumptions. |
c5aa993b | 20045 | Use the passed type or decode it from the die. */ |
176620f1 | 20046 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 20047 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
20048 | if (type != NULL) |
20049 | SYMBOL_TYPE (sym) = type; | |
20050 | else | |
e7c27a73 | 20051 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
20052 | attr = dwarf2_attr (die, |
20053 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
20054 | cu); | |
435d3d88 | 20055 | if (attr != nullptr) |
c906108c SS |
20056 | { |
20057 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
20058 | } | |
cb1df416 | 20059 | |
edb3359d DJ |
20060 | attr = dwarf2_attr (die, |
20061 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
20062 | cu); | |
435d3d88 | 20063 | if (attr != nullptr) |
cb1df416 | 20064 | { |
ecfb656c | 20065 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 20066 | struct file_entry *fe; |
9a619af0 | 20067 | |
ecfb656c PA |
20068 | if (cu->line_header != NULL) |
20069 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
20070 | else |
20071 | fe = NULL; | |
20072 | ||
20073 | if (fe == NULL) | |
b98664d3 | 20074 | complaint (_("file index out of range")); |
8c43009f PA |
20075 | else |
20076 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
20077 | } |
20078 | ||
c906108c SS |
20079 | switch (die->tag) |
20080 | { | |
20081 | case DW_TAG_label: | |
e142c38c | 20082 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 20083 | if (attr != nullptr) |
3e29f34a MR |
20084 | { |
20085 | CORE_ADDR addr; | |
20086 | ||
cd6c91b4 | 20087 | addr = attr->value_as_address (); |
3e29f34a | 20088 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 20089 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
3e29f34a | 20090 | } |
0f5238ed TT |
20091 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
20092 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 20093 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
d3cb6808 | 20094 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
20095 | break; |
20096 | case DW_TAG_subprogram: | |
20097 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
20098 | finish_block. */ | |
f1e6e072 | 20099 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 20100 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d | 20101 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
0a4b0913 AB |
20102 | || cu->language == language_ada |
20103 | || cu->language == language_fortran) | |
c906108c | 20104 | { |
2cfa0c8d | 20105 | /* Subprograms marked external are stored as a global symbol. |
0a4b0913 AB |
20106 | Ada and Fortran subprograms, whether marked external or |
20107 | not, are always stored as a global symbol, because we want | |
20108 | to be able to access them globally. For instance, we want | |
20109 | to be able to break on a nested subprogram without having | |
20110 | to specify the context. */ | |
c24bdb02 | 20111 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
20112 | } |
20113 | else | |
20114 | { | |
e37fd15a | 20115 | list_to_add = cu->list_in_scope; |
c906108c SS |
20116 | } |
20117 | break; | |
edb3359d DJ |
20118 | case DW_TAG_inlined_subroutine: |
20119 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
20120 | finish_block. */ | |
f1e6e072 | 20121 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 20122 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 20123 | list_to_add = cu->list_in_scope; |
edb3359d | 20124 | break; |
34eaf542 TT |
20125 | case DW_TAG_template_value_param: |
20126 | suppress_add = 1; | |
20127 | /* Fall through. */ | |
72929c62 | 20128 | case DW_TAG_constant: |
c906108c | 20129 | case DW_TAG_variable: |
254e6b9e | 20130 | case DW_TAG_member: |
0963b4bd MS |
20131 | /* Compilation with minimal debug info may result in |
20132 | variables with missing type entries. Change the | |
20133 | misleading `void' type to something sensible. */ | |
c906108c | 20134 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
46a4882b | 20135 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 20136 | |
e142c38c | 20137 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
20138 | /* In the case of DW_TAG_member, we should only be called for |
20139 | static const members. */ | |
20140 | if (die->tag == DW_TAG_member) | |
20141 | { | |
3863f96c DE |
20142 | /* dwarf2_add_field uses die_is_declaration, |
20143 | so we do the same. */ | |
254e6b9e DE |
20144 | gdb_assert (die_is_declaration (die, cu)); |
20145 | gdb_assert (attr); | |
20146 | } | |
435d3d88 | 20147 | if (attr != nullptr) |
c906108c | 20148 | { |
e7c27a73 | 20149 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 20150 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 20151 | if (!suppress_add) |
34eaf542 TT |
20152 | { |
20153 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
c24bdb02 | 20154 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 20155 | else |
e37fd15a | 20156 | list_to_add = cu->list_in_scope; |
34eaf542 | 20157 | } |
c906108c SS |
20158 | break; |
20159 | } | |
e142c38c | 20160 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 20161 | if (attr != nullptr) |
c906108c | 20162 | { |
e7c27a73 | 20163 | var_decode_location (attr, sym, cu); |
e142c38c | 20164 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
20165 | |
20166 | /* Fortran explicitly imports any global symbols to the local | |
20167 | scope by DW_TAG_common_block. */ | |
20168 | if (cu->language == language_fortran && die->parent | |
20169 | && die->parent->tag == DW_TAG_common_block) | |
20170 | attr2 = NULL; | |
20171 | ||
caac4577 JG |
20172 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
20173 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
20174 | && !dwarf2_per_objfile->has_section_at_zero) | |
20175 | { | |
20176 | /* When a static variable is eliminated by the linker, | |
20177 | the corresponding debug information is not stripped | |
20178 | out, but the variable address is set to null; | |
20179 | do not add such variables into symbol table. */ | |
20180 | } | |
20181 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 20182 | { |
4b610737 TT |
20183 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
20184 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
20185 | && dwarf2_per_objfile->can_copy) | |
20186 | { | |
20187 | /* A global static variable might be subject to | |
20188 | copy relocation. We first check for a local | |
20189 | minsym, though, because maybe the symbol was | |
20190 | marked hidden, in which case this would not | |
20191 | apply. */ | |
20192 | bound_minimal_symbol found | |
20193 | = (lookup_minimal_symbol_linkage | |
987012b8 | 20194 | (sym->linkage_name (), objfile)); |
4b610737 TT |
20195 | if (found.minsym != nullptr) |
20196 | sym->maybe_copied = 1; | |
20197 | } | |
f55ee35c | 20198 | |
1c809c68 TT |
20199 | /* A variable with DW_AT_external is never static, |
20200 | but it may be block-scoped. */ | |
804d2729 | 20201 | list_to_add |
c24bdb02 KS |
20202 | = ((cu->list_in_scope |
20203 | == cu->get_builder ()->get_file_symbols ()) | |
20204 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 20205 | : cu->list_in_scope); |
1c809c68 | 20206 | } |
c906108c | 20207 | else |
e37fd15a | 20208 | list_to_add = cu->list_in_scope; |
c906108c SS |
20209 | } |
20210 | else | |
20211 | { | |
20212 | /* We do not know the address of this symbol. | |
c5aa993b JM |
20213 | If it is an external symbol and we have type information |
20214 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
20215 | The address of the variable will then be determined from | |
20216 | the minimal symbol table whenever the variable is | |
20217 | referenced. */ | |
e142c38c | 20218 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
20219 | |
20220 | /* Fortran explicitly imports any global symbols to the local | |
20221 | scope by DW_TAG_common_block. */ | |
20222 | if (cu->language == language_fortran && die->parent | |
20223 | && die->parent->tag == DW_TAG_common_block) | |
20224 | { | |
20225 | /* SYMBOL_CLASS doesn't matter here because | |
20226 | read_common_block is going to reset it. */ | |
20227 | if (!suppress_add) | |
20228 | list_to_add = cu->list_in_scope; | |
20229 | } | |
20230 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
20231 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 20232 | { |
0fe7935b DJ |
20233 | /* A variable with DW_AT_external is never static, but it |
20234 | may be block-scoped. */ | |
804d2729 | 20235 | list_to_add |
c24bdb02 KS |
20236 | = ((cu->list_in_scope |
20237 | == cu->get_builder ()->get_file_symbols ()) | |
20238 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 20239 | : cu->list_in_scope); |
0fe7935b | 20240 | |
f1e6e072 | 20241 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 20242 | } |
442ddf59 JK |
20243 | else if (!die_is_declaration (die, cu)) |
20244 | { | |
20245 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
20246 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
20247 | if (!suppress_add) |
20248 | list_to_add = cu->list_in_scope; | |
442ddf59 | 20249 | } |
c906108c SS |
20250 | } |
20251 | break; | |
20252 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
20253 | { |
20254 | /* If we are inside a function, mark this as an argument. If | |
20255 | not, we might be looking at an argument to an inlined function | |
20256 | when we do not have enough information to show inlined frames; | |
20257 | pretend it's a local variable in that case so that the user can | |
20258 | still see it. */ | |
804d2729 | 20259 | struct context_stack *curr |
c24bdb02 | 20260 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
20261 | if (curr != nullptr && curr->name != nullptr) |
20262 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
20263 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 20264 | if (attr != nullptr) |
a60f3166 TT |
20265 | { |
20266 | var_decode_location (attr, sym, cu); | |
20267 | } | |
20268 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 20269 | if (attr != nullptr) |
a60f3166 TT |
20270 | { |
20271 | dwarf2_const_value (attr, sym, cu); | |
20272 | } | |
f346a30d | 20273 | |
a60f3166 TT |
20274 | list_to_add = cu->list_in_scope; |
20275 | } | |
c906108c SS |
20276 | break; |
20277 | case DW_TAG_unspecified_parameters: | |
20278 | /* From varargs functions; gdb doesn't seem to have any | |
20279 | interest in this information, so just ignore it for now. | |
20280 | (FIXME?) */ | |
20281 | break; | |
34eaf542 TT |
20282 | case DW_TAG_template_type_param: |
20283 | suppress_add = 1; | |
20284 | /* Fall through. */ | |
c906108c | 20285 | case DW_TAG_class_type: |
680b30c7 | 20286 | case DW_TAG_interface_type: |
c906108c SS |
20287 | case DW_TAG_structure_type: |
20288 | case DW_TAG_union_type: | |
72019c9c | 20289 | case DW_TAG_set_type: |
c906108c | 20290 | case DW_TAG_enumeration_type: |
f1e6e072 | 20291 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 20292 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 20293 | |
63d06c5c | 20294 | { |
9c37b5ae | 20295 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
20296 | really ever be static objects: otherwise, if you try |
20297 | to, say, break of a class's method and you're in a file | |
20298 | which doesn't mention that class, it won't work unless | |
20299 | the check for all static symbols in lookup_symbol_aux | |
20300 | saves you. See the OtherFileClass tests in | |
20301 | gdb.c++/namespace.exp. */ | |
20302 | ||
e37fd15a | 20303 | if (!suppress_add) |
34eaf542 | 20304 | { |
c24bdb02 | 20305 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 20306 | list_to_add |
c24bdb02 | 20307 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 20308 | && cu->language == language_cplus |
c24bdb02 | 20309 | ? builder->get_global_symbols () |
804d2729 | 20310 | : cu->list_in_scope); |
63d06c5c | 20311 | |
64382290 | 20312 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 20313 | ... }" also defines a typedef for "foo". */ |
64382290 | 20314 | if (cu->language == language_cplus |
45280282 | 20315 | || cu->language == language_ada |
c44af4eb TT |
20316 | || cu->language == language_d |
20317 | || cu->language == language_rust) | |
64382290 TT |
20318 | { |
20319 | /* The symbol's name is already allocated along | |
20320 | with this objfile, so we don't need to | |
20321 | duplicate it for the type. */ | |
20322 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
987012b8 | 20323 | TYPE_NAME (SYMBOL_TYPE (sym)) = sym->search_name (); |
64382290 | 20324 | } |
63d06c5c DC |
20325 | } |
20326 | } | |
c906108c SS |
20327 | break; |
20328 | case DW_TAG_typedef: | |
f1e6e072 | 20329 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 20330 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 20331 | list_to_add = cu->list_in_scope; |
63d06c5c | 20332 | break; |
c906108c | 20333 | case DW_TAG_base_type: |
a02abb62 | 20334 | case DW_TAG_subrange_type: |
f1e6e072 | 20335 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 20336 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 20337 | list_to_add = cu->list_in_scope; |
c906108c SS |
20338 | break; |
20339 | case DW_TAG_enumerator: | |
e142c38c | 20340 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 20341 | if (attr != nullptr) |
c906108c | 20342 | { |
e7c27a73 | 20343 | dwarf2_const_value (attr, sym, cu); |
c906108c | 20344 | } |
63d06c5c DC |
20345 | { |
20346 | /* NOTE: carlton/2003-11-10: See comment above in the | |
20347 | DW_TAG_class_type, etc. block. */ | |
20348 | ||
804d2729 | 20349 | list_to_add |
c24bdb02 | 20350 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 20351 | && cu->language == language_cplus |
c24bdb02 | 20352 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 20353 | : cu->list_in_scope); |
63d06c5c | 20354 | } |
c906108c | 20355 | break; |
74921315 | 20356 | case DW_TAG_imported_declaration: |
5c4e30ca | 20357 | case DW_TAG_namespace: |
f1e6e072 | 20358 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 20359 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 20360 | break; |
530e8392 KB |
20361 | case DW_TAG_module: |
20362 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
20363 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 20364 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 20365 | break; |
4357ac6c | 20366 | case DW_TAG_common_block: |
f1e6e072 | 20367 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 20368 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 20369 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 20370 | break; |
c906108c SS |
20371 | default: |
20372 | /* Not a tag we recognize. Hopefully we aren't processing | |
20373 | trash data, but since we must specifically ignore things | |
20374 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 20375 | this point. */ |
b98664d3 | 20376 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 20377 | dwarf_tag_name (die->tag)); |
c906108c SS |
20378 | break; |
20379 | } | |
df8a16a1 | 20380 | |
e37fd15a SW |
20381 | if (suppress_add) |
20382 | { | |
20383 | sym->hash_next = objfile->template_symbols; | |
20384 | objfile->template_symbols = sym; | |
20385 | list_to_add = NULL; | |
20386 | } | |
20387 | ||
20388 | if (list_to_add != NULL) | |
d3cb6808 | 20389 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 20390 | |
df8a16a1 DJ |
20391 | /* For the benefit of old versions of GCC, check for anonymous |
20392 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 20393 | if (!cu->processing_has_namespace_info |
94af9270 | 20394 | && cu->language == language_cplus) |
c24bdb02 | 20395 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
20396 | } |
20397 | return (sym); | |
20398 | } | |
20399 | ||
98bfdba5 PA |
20400 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
20401 | zero-extend it as appropriate for the symbol's type. The DWARF | |
20402 | standard (v4) is not entirely clear about the meaning of using | |
20403 | DW_FORM_dataN for a constant with a signed type, where the type is | |
20404 | wider than the data. The conclusion of a discussion on the DWARF | |
20405 | list was that this is unspecified. We choose to always zero-extend | |
20406 | because that is the interpretation long in use by GCC. */ | |
c906108c | 20407 | |
98bfdba5 | 20408 | static gdb_byte * |
ff39bb5e | 20409 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 20410 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 20411 | { |
518817b3 | 20412 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e17a4113 UW |
20413 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
20414 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
20415 | LONGEST l = DW_UNSND (attr); |
20416 | ||
20417 | if (bits < sizeof (*value) * 8) | |
20418 | { | |
20419 | l &= ((LONGEST) 1 << bits) - 1; | |
20420 | *value = l; | |
20421 | } | |
20422 | else if (bits == sizeof (*value) * 8) | |
20423 | *value = l; | |
20424 | else | |
20425 | { | |
224c3ddb | 20426 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
20427 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
20428 | return bytes; | |
20429 | } | |
20430 | ||
20431 | return NULL; | |
20432 | } | |
20433 | ||
20434 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
20435 | the value does not fit in *VALUE, set *BYTES - either already | |
20436 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
20437 | or, set *BATON, if we translated the constant to a location | |
20438 | expression. */ | |
20439 | ||
20440 | static void | |
ff39bb5e | 20441 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
20442 | const char *name, struct obstack *obstack, |
20443 | struct dwarf2_cu *cu, | |
d521ce57 | 20444 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
20445 | struct dwarf2_locexpr_baton **baton) |
20446 | { | |
518817b3 | 20447 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
98bfdba5 | 20448 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 20449 | struct dwarf_block *blk; |
98bfdba5 PA |
20450 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
20451 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
20452 | ||
20453 | *value = 0; | |
20454 | *bytes = NULL; | |
20455 | *baton = NULL; | |
c906108c SS |
20456 | |
20457 | switch (attr->form) | |
20458 | { | |
20459 | case DW_FORM_addr: | |
336d760d | 20460 | case DW_FORM_addrx: |
3019eac3 | 20461 | case DW_FORM_GNU_addr_index: |
ac56253d | 20462 | { |
ac56253d TT |
20463 | gdb_byte *data; |
20464 | ||
98bfdba5 PA |
20465 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
20466 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 20467 | cu_header->addr_size, |
98bfdba5 | 20468 | TYPE_LENGTH (type)); |
ac56253d TT |
20469 | /* Symbols of this form are reasonably rare, so we just |
20470 | piggyback on the existing location code rather than writing | |
20471 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 20472 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
98bfdba5 PA |
20473 | (*baton)->per_cu = cu->per_cu; |
20474 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 20475 | |
98bfdba5 | 20476 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 20477 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 20478 | (*baton)->data = data; |
ac56253d TT |
20479 | |
20480 | data[0] = DW_OP_addr; | |
20481 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
20482 | byte_order, DW_ADDR (attr)); | |
20483 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 20484 | } |
c906108c | 20485 | break; |
4ac36638 | 20486 | case DW_FORM_string: |
93b5768b | 20487 | case DW_FORM_strp: |
cf532bd1 | 20488 | case DW_FORM_strx: |
3019eac3 | 20489 | case DW_FORM_GNU_str_index: |
36586728 | 20490 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
20491 | /* DW_STRING is already allocated on the objfile obstack, point |
20492 | directly to it. */ | |
d521ce57 | 20493 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 20494 | break; |
c906108c SS |
20495 | case DW_FORM_block1: |
20496 | case DW_FORM_block2: | |
20497 | case DW_FORM_block4: | |
20498 | case DW_FORM_block: | |
2dc7f7b3 | 20499 | case DW_FORM_exprloc: |
0224619f | 20500 | case DW_FORM_data16: |
c906108c | 20501 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
20502 | if (TYPE_LENGTH (type) != blk->size) |
20503 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
20504 | TYPE_LENGTH (type)); | |
20505 | *bytes = blk->data; | |
c906108c | 20506 | break; |
2df3850c JM |
20507 | |
20508 | /* The DW_AT_const_value attributes are supposed to carry the | |
20509 | symbol's value "represented as it would be on the target | |
20510 | architecture." By the time we get here, it's already been | |
20511 | converted to host endianness, so we just need to sign- or | |
20512 | zero-extend it as appropriate. */ | |
20513 | case DW_FORM_data1: | |
3aef2284 | 20514 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 20515 | break; |
c906108c | 20516 | case DW_FORM_data2: |
3aef2284 | 20517 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 20518 | break; |
c906108c | 20519 | case DW_FORM_data4: |
3aef2284 | 20520 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 20521 | break; |
c906108c | 20522 | case DW_FORM_data8: |
3aef2284 | 20523 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
20524 | break; |
20525 | ||
c906108c | 20526 | case DW_FORM_sdata: |
663c44ac | 20527 | case DW_FORM_implicit_const: |
98bfdba5 | 20528 | *value = DW_SND (attr); |
2df3850c JM |
20529 | break; |
20530 | ||
c906108c | 20531 | case DW_FORM_udata: |
98bfdba5 | 20532 | *value = DW_UNSND (attr); |
c906108c | 20533 | break; |
2df3850c | 20534 | |
c906108c | 20535 | default: |
b98664d3 | 20536 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 20537 | dwarf_form_name (attr->form)); |
98bfdba5 | 20538 | *value = 0; |
c906108c SS |
20539 | break; |
20540 | } | |
20541 | } | |
20542 | ||
2df3850c | 20543 | |
98bfdba5 PA |
20544 | /* Copy constant value from an attribute to a symbol. */ |
20545 | ||
2df3850c | 20546 | static void |
ff39bb5e | 20547 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 20548 | struct dwarf2_cu *cu) |
2df3850c | 20549 | { |
518817b3 | 20550 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
12df843f | 20551 | LONGEST value; |
d521ce57 | 20552 | const gdb_byte *bytes; |
98bfdba5 | 20553 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 20554 | |
98bfdba5 | 20555 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 20556 | sym->print_name (), |
98bfdba5 PA |
20557 | &objfile->objfile_obstack, cu, |
20558 | &value, &bytes, &baton); | |
2df3850c | 20559 | |
98bfdba5 PA |
20560 | if (baton != NULL) |
20561 | { | |
98bfdba5 | 20562 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 20563 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
20564 | } |
20565 | else if (bytes != NULL) | |
20566 | { | |
20567 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 20568 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
20569 | } |
20570 | else | |
20571 | { | |
20572 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 20573 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 20574 | } |
2df3850c JM |
20575 | } |
20576 | ||
c906108c SS |
20577 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
20578 | ||
20579 | static struct type * | |
e7c27a73 | 20580 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 20581 | { |
c906108c | 20582 | struct attribute *type_attr; |
c906108c | 20583 | |
e142c38c | 20584 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
20585 | if (!type_attr) |
20586 | { | |
518817b3 | 20587 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 20588 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 20589 | return objfile_type (objfile)->builtin_void; |
c906108c | 20590 | } |
348e048f | 20591 | |
673bfd45 | 20592 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
20593 | } |
20594 | ||
b4ba55a1 JB |
20595 | /* True iff CU's producer generates GNAT Ada auxiliary information |
20596 | that allows to find parallel types through that information instead | |
20597 | of having to do expensive parallel lookups by type name. */ | |
20598 | ||
20599 | static int | |
20600 | need_gnat_info (struct dwarf2_cu *cu) | |
20601 | { | |
de4cb04a JB |
20602 | /* Assume that the Ada compiler was GNAT, which always produces |
20603 | the auxiliary information. */ | |
20604 | return (cu->language == language_ada); | |
b4ba55a1 JB |
20605 | } |
20606 | ||
b4ba55a1 JB |
20607 | /* Return the auxiliary type of the die in question using its |
20608 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
20609 | attribute is not present. */ | |
20610 | ||
20611 | static struct type * | |
20612 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
20613 | { | |
b4ba55a1 | 20614 | struct attribute *type_attr; |
b4ba55a1 JB |
20615 | |
20616 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
20617 | if (!type_attr) | |
20618 | return NULL; | |
20619 | ||
673bfd45 | 20620 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
20621 | } |
20622 | ||
20623 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
20624 | descriptive type accordingly. */ | |
20625 | ||
20626 | static void | |
20627 | set_descriptive_type (struct type *type, struct die_info *die, | |
20628 | struct dwarf2_cu *cu) | |
20629 | { | |
20630 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
20631 | ||
20632 | if (descriptive_type) | |
20633 | { | |
20634 | ALLOCATE_GNAT_AUX_TYPE (type); | |
20635 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
20636 | } | |
20637 | } | |
20638 | ||
c906108c SS |
20639 | /* Return the containing type of the die in question using its |
20640 | DW_AT_containing_type attribute. */ | |
20641 | ||
20642 | static struct type * | |
e7c27a73 | 20643 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 20644 | { |
c906108c | 20645 | struct attribute *type_attr; |
518817b3 | 20646 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 20647 | |
e142c38c | 20648 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
20649 | if (!type_attr) |
20650 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 20651 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 20652 | |
673bfd45 | 20653 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
20654 | } |
20655 | ||
ac9ec31b DE |
20656 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
20657 | ||
20658 | static struct type * | |
20659 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
20660 | { | |
518817b3 SM |
20661 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20662 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b | 20663 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
528e1572 | 20664 | char *saved; |
ac9ec31b | 20665 | |
528e1572 SM |
20666 | std::string message |
20667 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
20668 | objfile_name (objfile), | |
20669 | sect_offset_str (cu->header.sect_off), | |
20670 | sect_offset_str (die->sect_off)); | |
efba19b0 | 20671 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 20672 | |
19f392bc | 20673 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
20674 | } |
20675 | ||
673bfd45 | 20676 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
20677 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
20678 | DW_AT_containing_type. | |
673bfd45 DE |
20679 | If there is no type substitute an error marker. */ |
20680 | ||
c906108c | 20681 | static struct type * |
ff39bb5e | 20682 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 20683 | struct dwarf2_cu *cu) |
c906108c | 20684 | { |
518817b3 SM |
20685 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20686 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 20687 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
f792889a DJ |
20688 | struct type *this_type; |
20689 | ||
ac9ec31b DE |
20690 | gdb_assert (attr->name == DW_AT_type |
20691 | || attr->name == DW_AT_GNAT_descriptive_type | |
20692 | || attr->name == DW_AT_containing_type); | |
20693 | ||
673bfd45 DE |
20694 | /* First see if we have it cached. */ |
20695 | ||
36586728 TT |
20696 | if (attr->form == DW_FORM_GNU_ref_alt) |
20697 | { | |
20698 | struct dwarf2_per_cu_data *per_cu; | |
0826b30a | 20699 | sect_offset sect_off = attr->get_ref_die_offset (); |
36586728 | 20700 | |
ed2dc618 SM |
20701 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, |
20702 | dwarf2_per_objfile); | |
9c541725 | 20703 | this_type = get_die_type_at_offset (sect_off, per_cu); |
36586728 | 20704 | } |
cd6c91b4 | 20705 | else if (attr->form_is_ref ()) |
673bfd45 | 20706 | { |
0826b30a | 20707 | sect_offset sect_off = attr->get_ref_die_offset (); |
673bfd45 | 20708 | |
9c541725 | 20709 | this_type = get_die_type_at_offset (sect_off, cu->per_cu); |
673bfd45 | 20710 | } |
55f1336d | 20711 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 20712 | { |
ac9ec31b | 20713 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 20714 | |
ac9ec31b | 20715 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
20716 | } |
20717 | else | |
20718 | { | |
b98664d3 | 20719 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
20720 | " at %s [in module %s]"), |
20721 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 20722 | objfile_name (objfile)); |
ac9ec31b | 20723 | return build_error_marker_type (cu, die); |
673bfd45 DE |
20724 | } |
20725 | ||
20726 | /* If not cached we need to read it in. */ | |
20727 | ||
20728 | if (this_type == NULL) | |
20729 | { | |
ac9ec31b | 20730 | struct die_info *type_die = NULL; |
673bfd45 DE |
20731 | struct dwarf2_cu *type_cu = cu; |
20732 | ||
cd6c91b4 | 20733 | if (attr->form_is_ref ()) |
ac9ec31b DE |
20734 | type_die = follow_die_ref (die, attr, &type_cu); |
20735 | if (type_die == NULL) | |
20736 | return build_error_marker_type (cu, die); | |
20737 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
20738 | from an inter-CU reference and the type's CU got expanded before |
20739 | ours. */ | |
ac9ec31b | 20740 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
20741 | } |
20742 | ||
20743 | /* If we still don't have a type use an error marker. */ | |
20744 | ||
20745 | if (this_type == NULL) | |
ac9ec31b | 20746 | return build_error_marker_type (cu, die); |
673bfd45 | 20747 | |
f792889a | 20748 | return this_type; |
c906108c SS |
20749 | } |
20750 | ||
673bfd45 DE |
20751 | /* Return the type in DIE, CU. |
20752 | Returns NULL for invalid types. | |
20753 | ||
02142a6c | 20754 | This first does a lookup in die_type_hash, |
673bfd45 DE |
20755 | and only reads the die in if necessary. |
20756 | ||
20757 | NOTE: This can be called when reading in partial or full symbols. */ | |
20758 | ||
f792889a | 20759 | static struct type * |
e7c27a73 | 20760 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 20761 | { |
f792889a DJ |
20762 | struct type *this_type; |
20763 | ||
20764 | this_type = get_die_type (die, cu); | |
20765 | if (this_type) | |
20766 | return this_type; | |
20767 | ||
673bfd45 DE |
20768 | return read_type_die_1 (die, cu); |
20769 | } | |
20770 | ||
20771 | /* Read the type in DIE, CU. | |
20772 | Returns NULL for invalid types. */ | |
20773 | ||
20774 | static struct type * | |
20775 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
20776 | { | |
20777 | struct type *this_type = NULL; | |
20778 | ||
c906108c SS |
20779 | switch (die->tag) |
20780 | { | |
20781 | case DW_TAG_class_type: | |
680b30c7 | 20782 | case DW_TAG_interface_type: |
c906108c SS |
20783 | case DW_TAG_structure_type: |
20784 | case DW_TAG_union_type: | |
f792889a | 20785 | this_type = read_structure_type (die, cu); |
c906108c SS |
20786 | break; |
20787 | case DW_TAG_enumeration_type: | |
f792889a | 20788 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
20789 | break; |
20790 | case DW_TAG_subprogram: | |
20791 | case DW_TAG_subroutine_type: | |
edb3359d | 20792 | case DW_TAG_inlined_subroutine: |
f792889a | 20793 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
20794 | break; |
20795 | case DW_TAG_array_type: | |
f792889a | 20796 | this_type = read_array_type (die, cu); |
c906108c | 20797 | break; |
72019c9c | 20798 | case DW_TAG_set_type: |
f792889a | 20799 | this_type = read_set_type (die, cu); |
72019c9c | 20800 | break; |
c906108c | 20801 | case DW_TAG_pointer_type: |
f792889a | 20802 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
20803 | break; |
20804 | case DW_TAG_ptr_to_member_type: | |
f792889a | 20805 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
20806 | break; |
20807 | case DW_TAG_reference_type: | |
4297a3f0 AV |
20808 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
20809 | break; | |
20810 | case DW_TAG_rvalue_reference_type: | |
20811 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
20812 | break; |
20813 | case DW_TAG_const_type: | |
f792889a | 20814 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
20815 | break; |
20816 | case DW_TAG_volatile_type: | |
f792889a | 20817 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 20818 | break; |
06d66ee9 TT |
20819 | case DW_TAG_restrict_type: |
20820 | this_type = read_tag_restrict_type (die, cu); | |
20821 | break; | |
c906108c | 20822 | case DW_TAG_string_type: |
f792889a | 20823 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
20824 | break; |
20825 | case DW_TAG_typedef: | |
f792889a | 20826 | this_type = read_typedef (die, cu); |
c906108c | 20827 | break; |
a02abb62 | 20828 | case DW_TAG_subrange_type: |
f792889a | 20829 | this_type = read_subrange_type (die, cu); |
a02abb62 | 20830 | break; |
c906108c | 20831 | case DW_TAG_base_type: |
f792889a | 20832 | this_type = read_base_type (die, cu); |
c906108c | 20833 | break; |
81a17f79 | 20834 | case DW_TAG_unspecified_type: |
f792889a | 20835 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 20836 | break; |
0114d602 DJ |
20837 | case DW_TAG_namespace: |
20838 | this_type = read_namespace_type (die, cu); | |
20839 | break; | |
f55ee35c JK |
20840 | case DW_TAG_module: |
20841 | this_type = read_module_type (die, cu); | |
20842 | break; | |
a2c2acaf MW |
20843 | case DW_TAG_atomic_type: |
20844 | this_type = read_tag_atomic_type (die, cu); | |
20845 | break; | |
c906108c | 20846 | default: |
b98664d3 | 20847 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 20848 | dwarf_tag_name (die->tag)); |
c906108c SS |
20849 | break; |
20850 | } | |
63d06c5c | 20851 | |
f792889a | 20852 | return this_type; |
63d06c5c DC |
20853 | } |
20854 | ||
abc72ce4 DE |
20855 | /* See if we can figure out if the class lives in a namespace. We do |
20856 | this by looking for a member function; its demangled name will | |
20857 | contain namespace info, if there is any. | |
20858 | Return the computed name or NULL. | |
20859 | Space for the result is allocated on the objfile's obstack. | |
20860 | This is the full-die version of guess_partial_die_structure_name. | |
20861 | In this case we know DIE has no useful parent. */ | |
20862 | ||
43816ebc | 20863 | static const char * |
abc72ce4 DE |
20864 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
20865 | { | |
20866 | struct die_info *spec_die; | |
20867 | struct dwarf2_cu *spec_cu; | |
20868 | struct die_info *child; | |
518817b3 | 20869 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 DE |
20870 | |
20871 | spec_cu = cu; | |
20872 | spec_die = die_specification (die, &spec_cu); | |
20873 | if (spec_die != NULL) | |
20874 | { | |
20875 | die = spec_die; | |
20876 | cu = spec_cu; | |
20877 | } | |
20878 | ||
20879 | for (child = die->child; | |
20880 | child != NULL; | |
20881 | child = child->sibling) | |
20882 | { | |
20883 | if (child->tag == DW_TAG_subprogram) | |
20884 | { | |
73b9be8b | 20885 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 20886 | |
7d45c7c3 | 20887 | if (linkage_name != NULL) |
abc72ce4 | 20888 | { |
43816ebc TT |
20889 | gdb::unique_xmalloc_ptr<char> actual_name |
20890 | (language_class_name_from_physname (cu->language_defn, | |
20891 | linkage_name)); | |
20892 | const char *name = NULL; | |
abc72ce4 DE |
20893 | |
20894 | if (actual_name != NULL) | |
20895 | { | |
15d034d0 | 20896 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
20897 | |
20898 | if (die_name != NULL | |
43816ebc | 20899 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
20900 | { |
20901 | /* Strip off the class name from the full name. | |
20902 | We want the prefix. */ | |
20903 | int die_name_len = strlen (die_name); | |
43816ebc TT |
20904 | int actual_name_len = strlen (actual_name.get ()); |
20905 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
20906 | |
20907 | /* Test for '::' as a sanity check. */ | |
20908 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 20909 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 20910 | name = obstack_strndup ( |
e3b94546 | 20911 | &objfile->per_bfd->storage_obstack, |
43816ebc | 20912 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
20913 | } |
20914 | } | |
abc72ce4 DE |
20915 | return name; |
20916 | } | |
20917 | } | |
20918 | } | |
20919 | ||
20920 | return NULL; | |
20921 | } | |
20922 | ||
96408a79 SA |
20923 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
20924 | prefix part in such case. See | |
20925 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
20926 | ||
a121b7c1 | 20927 | static const char * |
96408a79 SA |
20928 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
20929 | { | |
20930 | struct attribute *attr; | |
e6a959d6 | 20931 | const char *base; |
96408a79 SA |
20932 | |
20933 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
20934 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
20935 | return NULL; | |
20936 | ||
7d45c7c3 | 20937 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
20938 | return NULL; |
20939 | ||
73b9be8b | 20940 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
20941 | if (attr == NULL || DW_STRING (attr) == NULL) |
20942 | return NULL; | |
20943 | ||
20944 | /* dwarf2_name had to be already called. */ | |
20945 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
20946 | ||
20947 | /* Strip the base name, keep any leading namespaces/classes. */ | |
20948 | base = strrchr (DW_STRING (attr), ':'); | |
20949 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
20950 | return ""; | |
20951 | ||
518817b3 | 20952 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0cf9feb9 TT |
20953 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
20954 | DW_STRING (attr), | |
20955 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
20956 | } |
20957 | ||
fdde2d81 | 20958 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 20959 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 20960 | |
0114d602 DJ |
20961 | For example, if we're within the method foo() in the following |
20962 | code: | |
20963 | ||
20964 | namespace N { | |
20965 | class C { | |
20966 | void foo () { | |
20967 | } | |
20968 | }; | |
20969 | } | |
20970 | ||
20971 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 20972 | |
0d5cff50 | 20973 | static const char * |
e142c38c | 20974 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 20975 | { |
518817b3 SM |
20976 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20977 | = cu->per_cu->dwarf2_per_objfile; | |
0114d602 DJ |
20978 | struct die_info *parent, *spec_die; |
20979 | struct dwarf2_cu *spec_cu; | |
20980 | struct type *parent_type; | |
a121b7c1 | 20981 | const char *retval; |
63d06c5c | 20982 | |
9c37b5ae | 20983 | if (cu->language != language_cplus |
c44af4eb TT |
20984 | && cu->language != language_fortran && cu->language != language_d |
20985 | && cu->language != language_rust) | |
0114d602 DJ |
20986 | return ""; |
20987 | ||
96408a79 SA |
20988 | retval = anonymous_struct_prefix (die, cu); |
20989 | if (retval) | |
20990 | return retval; | |
20991 | ||
0114d602 DJ |
20992 | /* We have to be careful in the presence of DW_AT_specification. |
20993 | For example, with GCC 3.4, given the code | |
20994 | ||
20995 | namespace N { | |
20996 | void foo() { | |
20997 | // Definition of N::foo. | |
20998 | } | |
20999 | } | |
21000 | ||
21001 | then we'll have a tree of DIEs like this: | |
21002 | ||
21003 | 1: DW_TAG_compile_unit | |
21004 | 2: DW_TAG_namespace // N | |
21005 | 3: DW_TAG_subprogram // declaration of N::foo | |
21006 | 4: DW_TAG_subprogram // definition of N::foo | |
21007 | DW_AT_specification // refers to die #3 | |
21008 | ||
21009 | Thus, when processing die #4, we have to pretend that we're in | |
21010 | the context of its DW_AT_specification, namely the contex of die | |
21011 | #3. */ | |
21012 | spec_cu = cu; | |
21013 | spec_die = die_specification (die, &spec_cu); | |
21014 | if (spec_die == NULL) | |
21015 | parent = die->parent; | |
21016 | else | |
63d06c5c | 21017 | { |
0114d602 DJ |
21018 | parent = spec_die->parent; |
21019 | cu = spec_cu; | |
63d06c5c | 21020 | } |
0114d602 DJ |
21021 | |
21022 | if (parent == NULL) | |
21023 | return ""; | |
98bfdba5 PA |
21024 | else if (parent->building_fullname) |
21025 | { | |
21026 | const char *name; | |
21027 | const char *parent_name; | |
21028 | ||
21029 | /* It has been seen on RealView 2.2 built binaries, | |
21030 | DW_TAG_template_type_param types actually _defined_ as | |
21031 | children of the parent class: | |
21032 | ||
21033 | enum E {}; | |
21034 | template class <class Enum> Class{}; | |
21035 | Class<enum E> class_e; | |
21036 | ||
21037 | 1: DW_TAG_class_type (Class) | |
21038 | 2: DW_TAG_enumeration_type (E) | |
21039 | 3: DW_TAG_enumerator (enum1:0) | |
21040 | 3: DW_TAG_enumerator (enum2:1) | |
21041 | ... | |
21042 | 2: DW_TAG_template_type_param | |
21043 | DW_AT_type DW_FORM_ref_udata (E) | |
21044 | ||
21045 | Besides being broken debug info, it can put GDB into an | |
21046 | infinite loop. Consider: | |
21047 | ||
21048 | When we're building the full name for Class<E>, we'll start | |
21049 | at Class, and go look over its template type parameters, | |
21050 | finding E. We'll then try to build the full name of E, and | |
21051 | reach here. We're now trying to build the full name of E, | |
21052 | and look over the parent DIE for containing scope. In the | |
21053 | broken case, if we followed the parent DIE of E, we'd again | |
21054 | find Class, and once again go look at its template type | |
21055 | arguments, etc., etc. Simply don't consider such parent die | |
21056 | as source-level parent of this die (it can't be, the language | |
21057 | doesn't allow it), and break the loop here. */ | |
21058 | name = dwarf2_name (die, cu); | |
21059 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 21060 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
21061 | name ? name : "<unknown>", |
21062 | parent_name ? parent_name : "<unknown>"); | |
21063 | return ""; | |
21064 | } | |
63d06c5c | 21065 | else |
0114d602 DJ |
21066 | switch (parent->tag) |
21067 | { | |
63d06c5c | 21068 | case DW_TAG_namespace: |
0114d602 | 21069 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
21070 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
21071 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
21072 | Work around this problem here. */ | |
21073 | if (cu->language == language_cplus | |
e86ca25f | 21074 | && strcmp (TYPE_NAME (parent_type), "::") == 0) |
acebe513 | 21075 | return ""; |
0114d602 | 21076 | /* We give a name to even anonymous namespaces. */ |
e86ca25f | 21077 | return TYPE_NAME (parent_type); |
63d06c5c | 21078 | case DW_TAG_class_type: |
680b30c7 | 21079 | case DW_TAG_interface_type: |
63d06c5c | 21080 | case DW_TAG_structure_type: |
0114d602 | 21081 | case DW_TAG_union_type: |
f55ee35c | 21082 | case DW_TAG_module: |
0114d602 | 21083 | parent_type = read_type_die (parent, cu); |
e86ca25f TT |
21084 | if (TYPE_NAME (parent_type) != NULL) |
21085 | return TYPE_NAME (parent_type); | |
0114d602 DJ |
21086 | else |
21087 | /* An anonymous structure is only allowed non-static data | |
21088 | members; no typedefs, no member functions, et cetera. | |
21089 | So it does not need a prefix. */ | |
21090 | return ""; | |
abc72ce4 | 21091 | case DW_TAG_compile_unit: |
95554aad | 21092 | case DW_TAG_partial_unit: |
abc72ce4 DE |
21093 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
21094 | if (cu->language == language_cplus | |
fd5866f6 | 21095 | && !dwarf2_per_objfile->types.empty () |
abc72ce4 DE |
21096 | && die->child != NULL |
21097 | && (die->tag == DW_TAG_class_type | |
21098 | || die->tag == DW_TAG_structure_type | |
21099 | || die->tag == DW_TAG_union_type)) | |
21100 | { | |
43816ebc | 21101 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
21102 | if (name != NULL) |
21103 | return name; | |
21104 | } | |
21105 | return ""; | |
0a4b0913 AB |
21106 | case DW_TAG_subprogram: |
21107 | /* Nested subroutines in Fortran get a prefix with the name | |
21108 | of the parent's subroutine. */ | |
21109 | if (cu->language == language_fortran) | |
21110 | { | |
21111 | if ((die->tag == DW_TAG_subprogram) | |
21112 | && (dwarf2_name (parent, cu) != NULL)) | |
21113 | return dwarf2_name (parent, cu); | |
21114 | } | |
21115 | return determine_prefix (parent, cu); | |
3d567982 TT |
21116 | case DW_TAG_enumeration_type: |
21117 | parent_type = read_type_die (parent, cu); | |
21118 | if (TYPE_DECLARED_CLASS (parent_type)) | |
21119 | { | |
e86ca25f TT |
21120 | if (TYPE_NAME (parent_type) != NULL) |
21121 | return TYPE_NAME (parent_type); | |
3d567982 TT |
21122 | return ""; |
21123 | } | |
21124 | /* Fall through. */ | |
63d06c5c | 21125 | default: |
8176b9b8 | 21126 | return determine_prefix (parent, cu); |
63d06c5c | 21127 | } |
63d06c5c DC |
21128 | } |
21129 | ||
3e43a32a MS |
21130 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
21131 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
21132 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
21133 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
21134 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 21135 | |
f55ee35c | 21136 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
21137 | |
21138 | static char * | |
f55ee35c JK |
21139 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
21140 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 21141 | { |
f55ee35c | 21142 | const char *lead = ""; |
5c315b68 | 21143 | const char *sep; |
63d06c5c | 21144 | |
3e43a32a MS |
21145 | if (suffix == NULL || suffix[0] == '\0' |
21146 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 21147 | sep = ""; |
45280282 IB |
21148 | else if (cu->language == language_d) |
21149 | { | |
21150 | /* For D, the 'main' function could be defined in any module, but it | |
21151 | should never be prefixed. */ | |
21152 | if (strcmp (suffix, "D main") == 0) | |
21153 | { | |
21154 | prefix = ""; | |
21155 | sep = ""; | |
21156 | } | |
21157 | else | |
21158 | sep = "."; | |
21159 | } | |
f55ee35c JK |
21160 | else if (cu->language == language_fortran && physname) |
21161 | { | |
21162 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
21163 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
21164 | ||
21165 | lead = "__"; | |
21166 | sep = "_MOD_"; | |
21167 | } | |
987504bb JJ |
21168 | else |
21169 | sep = "::"; | |
63d06c5c | 21170 | |
6dd47d34 DE |
21171 | if (prefix == NULL) |
21172 | prefix = ""; | |
21173 | if (suffix == NULL) | |
21174 | suffix = ""; | |
21175 | ||
987504bb JJ |
21176 | if (obs == NULL) |
21177 | { | |
3e43a32a | 21178 | char *retval |
224c3ddb SM |
21179 | = ((char *) |
21180 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 21181 | |
f55ee35c JK |
21182 | strcpy (retval, lead); |
21183 | strcat (retval, prefix); | |
6dd47d34 DE |
21184 | strcat (retval, sep); |
21185 | strcat (retval, suffix); | |
63d06c5c DC |
21186 | return retval; |
21187 | } | |
987504bb JJ |
21188 | else |
21189 | { | |
21190 | /* We have an obstack. */ | |
f55ee35c | 21191 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 21192 | } |
63d06c5c DC |
21193 | } |
21194 | ||
71c25dea TT |
21195 | /* Get name of a die, return NULL if not found. */ |
21196 | ||
15d034d0 TT |
21197 | static const char * |
21198 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
be1e3d3e | 21199 | struct objfile *objfile) |
71c25dea TT |
21200 | { |
21201 | if (name && cu->language == language_cplus) | |
21202 | { | |
2f408ecb | 21203 | std::string canon_name = cp_canonicalize_string (name); |
71c25dea | 21204 | |
2f408ecb | 21205 | if (!canon_name.empty ()) |
71c25dea | 21206 | { |
2f408ecb | 21207 | if (canon_name != name) |
be1e3d3e | 21208 | name = objfile->intern (canon_name); |
71c25dea TT |
21209 | } |
21210 | } | |
21211 | ||
21212 | return name; | |
c906108c SS |
21213 | } |
21214 | ||
96553a0c DE |
21215 | /* Get name of a die, return NULL if not found. |
21216 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 21217 | |
15d034d0 | 21218 | static const char * |
e142c38c | 21219 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
21220 | { |
21221 | struct attribute *attr; | |
518817b3 | 21222 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
9219021c | 21223 | |
e142c38c | 21224 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 21225 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 21226 | && die->tag != DW_TAG_namespace |
53832f31 TT |
21227 | && die->tag != DW_TAG_class_type |
21228 | && die->tag != DW_TAG_interface_type | |
21229 | && die->tag != DW_TAG_structure_type | |
21230 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
21231 | return NULL; |
21232 | ||
21233 | switch (die->tag) | |
21234 | { | |
21235 | case DW_TAG_compile_unit: | |
95554aad | 21236 | case DW_TAG_partial_unit: |
71c25dea TT |
21237 | /* Compilation units have a DW_AT_name that is a filename, not |
21238 | a source language identifier. */ | |
21239 | case DW_TAG_enumeration_type: | |
21240 | case DW_TAG_enumerator: | |
21241 | /* These tags always have simple identifiers already; no need | |
21242 | to canonicalize them. */ | |
21243 | return DW_STRING (attr); | |
907af001 | 21244 | |
96553a0c DE |
21245 | case DW_TAG_namespace: |
21246 | if (attr != NULL && DW_STRING (attr) != NULL) | |
21247 | return DW_STRING (attr); | |
21248 | return CP_ANONYMOUS_NAMESPACE_STR; | |
21249 | ||
907af001 UW |
21250 | case DW_TAG_class_type: |
21251 | case DW_TAG_interface_type: | |
21252 | case DW_TAG_structure_type: | |
21253 | case DW_TAG_union_type: | |
21254 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
21255 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
21256 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
21257 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 21258 | if (attr && DW_STRING (attr) |
61012eef GB |
21259 | && (startswith (DW_STRING (attr), "._") |
21260 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 21261 | return NULL; |
53832f31 TT |
21262 | |
21263 | /* GCC might emit a nameless typedef that has a linkage name. See | |
21264 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
21265 | if (!attr || DW_STRING (attr) == NULL) | |
21266 | { | |
73b9be8b | 21267 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
21268 | if (attr == NULL || DW_STRING (attr) == NULL) |
21269 | return NULL; | |
21270 | ||
df5c6c50 JK |
21271 | /* Avoid demangling DW_STRING (attr) the second time on a second |
21272 | call for the same DIE. */ | |
21273 | if (!DW_STRING_IS_CANONICAL (attr)) | |
53832f31 | 21274 | { |
43816ebc TT |
21275 | gdb::unique_xmalloc_ptr<char> demangled |
21276 | (gdb_demangle (DW_STRING (attr), DMGL_TYPES)); | |
4f180d53 AT |
21277 | if (demangled == nullptr) |
21278 | return nullptr; | |
43816ebc | 21279 | |
be1e3d3e | 21280 | DW_STRING (attr) = objfile->intern (demangled.get ()); |
53832f31 | 21281 | DW_STRING_IS_CANONICAL (attr) = 1; |
53832f31 | 21282 | } |
67430cd0 TT |
21283 | |
21284 | /* Strip any leading namespaces/classes, keep only the base name. | |
21285 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
21286 | const char *base = strrchr (DW_STRING (attr), ':'); | |
21287 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
21288 | return &base[1]; | |
21289 | else | |
21290 | return DW_STRING (attr); | |
53832f31 | 21291 | } |
907af001 UW |
21292 | break; |
21293 | ||
71c25dea | 21294 | default: |
907af001 UW |
21295 | break; |
21296 | } | |
21297 | ||
21298 | if (!DW_STRING_IS_CANONICAL (attr)) | |
21299 | { | |
be1e3d3e TT |
21300 | DW_STRING (attr) = dwarf2_canonicalize_name (DW_STRING (attr), cu, |
21301 | objfile); | |
907af001 | 21302 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 21303 | } |
907af001 | 21304 | return DW_STRING (attr); |
9219021c DC |
21305 | } |
21306 | ||
21307 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
21308 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
21309 | containing the return value on output. */ | |
9219021c DC |
21310 | |
21311 | static struct die_info * | |
f2f0e013 | 21312 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
21313 | { |
21314 | struct attribute *attr; | |
9219021c | 21315 | |
f2f0e013 | 21316 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
21317 | if (attr == NULL) |
21318 | return NULL; | |
21319 | ||
f2f0e013 | 21320 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
21321 | } |
21322 | ||
f9aca02d | 21323 | static void |
d97bc12b | 21324 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
21325 | { |
21326 | unsigned int i; | |
21327 | ||
d97bc12b | 21328 | print_spaces (indent, f); |
9d8780f0 | 21329 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 21330 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 21331 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
21332 | |
21333 | if (die->parent != NULL) | |
21334 | { | |
21335 | print_spaces (indent, f); | |
9d8780f0 SM |
21336 | fprintf_unfiltered (f, " parent at offset: %s\n", |
21337 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
21338 | } |
21339 | ||
21340 | print_spaces (indent, f); | |
21341 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 21342 | dwarf_bool_name (die->child != NULL)); |
c906108c | 21343 | |
d97bc12b DE |
21344 | print_spaces (indent, f); |
21345 | fprintf_unfiltered (f, " attributes:\n"); | |
21346 | ||
c906108c SS |
21347 | for (i = 0; i < die->num_attrs; ++i) |
21348 | { | |
d97bc12b DE |
21349 | print_spaces (indent, f); |
21350 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
21351 | dwarf_attr_name (die->attrs[i].name), |
21352 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 21353 | |
c906108c SS |
21354 | switch (die->attrs[i].form) |
21355 | { | |
c906108c | 21356 | case DW_FORM_addr: |
336d760d | 21357 | case DW_FORM_addrx: |
3019eac3 | 21358 | case DW_FORM_GNU_addr_index: |
d97bc12b | 21359 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 21360 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
21361 | break; |
21362 | case DW_FORM_block2: | |
21363 | case DW_FORM_block4: | |
21364 | case DW_FORM_block: | |
21365 | case DW_FORM_block1: | |
56eb65bd SP |
21366 | fprintf_unfiltered (f, "block: size %s", |
21367 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 21368 | break; |
2dc7f7b3 | 21369 | case DW_FORM_exprloc: |
56eb65bd SP |
21370 | fprintf_unfiltered (f, "expression: size %s", |
21371 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 21372 | break; |
0224619f JK |
21373 | case DW_FORM_data16: |
21374 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
21375 | break; | |
4568ecf9 DE |
21376 | case DW_FORM_ref_addr: |
21377 | fprintf_unfiltered (f, "ref address: "); | |
21378 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
21379 | break; | |
36586728 TT |
21380 | case DW_FORM_GNU_ref_alt: |
21381 | fprintf_unfiltered (f, "alt ref address: "); | |
21382 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
21383 | break; | |
10b3939b DJ |
21384 | case DW_FORM_ref1: |
21385 | case DW_FORM_ref2: | |
21386 | case DW_FORM_ref4: | |
4568ecf9 DE |
21387 | case DW_FORM_ref8: |
21388 | case DW_FORM_ref_udata: | |
d97bc12b | 21389 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 21390 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 21391 | break; |
c906108c SS |
21392 | case DW_FORM_data1: |
21393 | case DW_FORM_data2: | |
21394 | case DW_FORM_data4: | |
ce5d95e1 | 21395 | case DW_FORM_data8: |
c906108c SS |
21396 | case DW_FORM_udata: |
21397 | case DW_FORM_sdata: | |
43bbcdc2 PH |
21398 | fprintf_unfiltered (f, "constant: %s", |
21399 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 21400 | break; |
2dc7f7b3 TT |
21401 | case DW_FORM_sec_offset: |
21402 | fprintf_unfiltered (f, "section offset: %s", | |
21403 | pulongest (DW_UNSND (&die->attrs[i]))); | |
21404 | break; | |
55f1336d | 21405 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
21406 | fprintf_unfiltered (f, "signature: %s", |
21407 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 21408 | break; |
c906108c | 21409 | case DW_FORM_string: |
4bdf3d34 | 21410 | case DW_FORM_strp: |
43988095 | 21411 | case DW_FORM_line_strp: |
cf532bd1 | 21412 | case DW_FORM_strx: |
3019eac3 | 21413 | case DW_FORM_GNU_str_index: |
36586728 | 21414 | case DW_FORM_GNU_strp_alt: |
8285870a | 21415 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 21416 | DW_STRING (&die->attrs[i]) |
8285870a JK |
21417 | ? DW_STRING (&die->attrs[i]) : "", |
21418 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
21419 | break; |
21420 | case DW_FORM_flag: | |
21421 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 21422 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 21423 | else |
d97bc12b | 21424 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 21425 | break; |
2dc7f7b3 TT |
21426 | case DW_FORM_flag_present: |
21427 | fprintf_unfiltered (f, "flag: TRUE"); | |
21428 | break; | |
a8329558 | 21429 | case DW_FORM_indirect: |
0963b4bd MS |
21430 | /* The reader will have reduced the indirect form to |
21431 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 21432 | fprintf_unfiltered (f, |
3e43a32a | 21433 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 21434 | break; |
663c44ac JK |
21435 | case DW_FORM_implicit_const: |
21436 | fprintf_unfiltered (f, "constant: %s", | |
21437 | plongest (DW_SND (&die->attrs[i]))); | |
21438 | break; | |
c906108c | 21439 | default: |
d97bc12b | 21440 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 21441 | die->attrs[i].form); |
d97bc12b | 21442 | break; |
c906108c | 21443 | } |
d97bc12b | 21444 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
21445 | } |
21446 | } | |
21447 | ||
f9aca02d | 21448 | static void |
d97bc12b | 21449 | dump_die_for_error (struct die_info *die) |
c906108c | 21450 | { |
d97bc12b DE |
21451 | dump_die_shallow (gdb_stderr, 0, die); |
21452 | } | |
21453 | ||
21454 | static void | |
21455 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
21456 | { | |
21457 | int indent = level * 4; | |
21458 | ||
21459 | gdb_assert (die != NULL); | |
21460 | ||
21461 | if (level >= max_level) | |
21462 | return; | |
21463 | ||
21464 | dump_die_shallow (f, indent, die); | |
21465 | ||
21466 | if (die->child != NULL) | |
c906108c | 21467 | { |
d97bc12b DE |
21468 | print_spaces (indent, f); |
21469 | fprintf_unfiltered (f, " Children:"); | |
21470 | if (level + 1 < max_level) | |
21471 | { | |
21472 | fprintf_unfiltered (f, "\n"); | |
21473 | dump_die_1 (f, level + 1, max_level, die->child); | |
21474 | } | |
21475 | else | |
21476 | { | |
3e43a32a MS |
21477 | fprintf_unfiltered (f, |
21478 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
21479 | } |
21480 | } | |
21481 | ||
21482 | if (die->sibling != NULL && level > 0) | |
21483 | { | |
21484 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
21485 | } |
21486 | } | |
21487 | ||
d97bc12b DE |
21488 | /* This is called from the pdie macro in gdbinit.in. |
21489 | It's not static so gcc will keep a copy callable from gdb. */ | |
21490 | ||
21491 | void | |
21492 | dump_die (struct die_info *die, int max_level) | |
21493 | { | |
21494 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
21495 | } | |
21496 | ||
f9aca02d | 21497 | static void |
51545339 | 21498 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21499 | { |
51545339 | 21500 | void **slot; |
c906108c | 21501 | |
9c541725 PA |
21502 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
21503 | to_underlying (die->sect_off), | |
b64f50a1 | 21504 | INSERT); |
51545339 DJ |
21505 | |
21506 | *slot = die; | |
c906108c SS |
21507 | } |
21508 | ||
348e048f DE |
21509 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
21510 | On entry *REF_CU is the CU of SRC_DIE. | |
21511 | On exit *REF_CU is the CU of the result. */ | |
21512 | ||
21513 | static struct die_info * | |
ff39bb5e | 21514 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
21515 | struct dwarf2_cu **ref_cu) |
21516 | { | |
21517 | struct die_info *die; | |
21518 | ||
cd6c91b4 | 21519 | if (attr->form_is_ref ()) |
348e048f | 21520 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 21521 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
21522 | die = follow_die_sig (src_die, attr, ref_cu); |
21523 | else | |
21524 | { | |
21525 | dump_die_for_error (src_die); | |
21526 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
518817b3 | 21527 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
348e048f DE |
21528 | } |
21529 | ||
21530 | return die; | |
03dd20cc DJ |
21531 | } |
21532 | ||
5c631832 | 21533 | /* Follow reference OFFSET. |
673bfd45 DE |
21534 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
21535 | On exit *REF_CU is the CU of the result. | |
21536 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 21537 | |
f9aca02d | 21538 | static struct die_info * |
9c541725 | 21539 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 21540 | struct dwarf2_cu **ref_cu) |
c906108c | 21541 | { |
10b3939b | 21542 | struct die_info temp_die; |
f2f0e013 | 21543 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
518817b3 SM |
21544 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21545 | = cu->per_cu->dwarf2_per_objfile; | |
10b3939b | 21546 | |
348e048f DE |
21547 | gdb_assert (cu->per_cu != NULL); |
21548 | ||
98bfdba5 PA |
21549 | target_cu = cu; |
21550 | ||
3019eac3 | 21551 | if (cu->per_cu->is_debug_types) |
348e048f DE |
21552 | { |
21553 | /* .debug_types CUs cannot reference anything outside their CU. | |
21554 | If they need to, they have to reference a signatured type via | |
55f1336d | 21555 | DW_FORM_ref_sig8. */ |
4057dfde | 21556 | if (!cu->header.offset_in_cu_p (sect_off)) |
5c631832 | 21557 | return NULL; |
348e048f | 21558 | } |
36586728 | 21559 | else if (offset_in_dwz != cu->per_cu->is_dwz |
4057dfde | 21560 | || !cu->header.offset_in_cu_p (sect_off)) |
10b3939b DJ |
21561 | { |
21562 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 21563 | |
9c541725 | 21564 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 21565 | dwarf2_per_objfile); |
03dd20cc DJ |
21566 | |
21567 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad | 21568 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 21569 | load_full_comp_unit (per_cu, false, cu->language); |
03dd20cc | 21570 | |
10b3939b DJ |
21571 | target_cu = per_cu->cu; |
21572 | } | |
98bfdba5 PA |
21573 | else if (cu->dies == NULL) |
21574 | { | |
21575 | /* We're loading full DIEs during partial symbol reading. */ | |
21576 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
58f0c718 | 21577 | load_full_comp_unit (cu->per_cu, false, language_minimal); |
98bfdba5 | 21578 | } |
c906108c | 21579 | |
f2f0e013 | 21580 | *ref_cu = target_cu; |
9c541725 | 21581 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
21582 | |
21583 | if (target_cu != cu) | |
21584 | target_cu->ancestor = cu; | |
21585 | ||
9a3c8263 | 21586 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
21587 | &temp_die, |
21588 | to_underlying (sect_off)); | |
5c631832 | 21589 | } |
10b3939b | 21590 | |
5c631832 JK |
21591 | /* Follow reference attribute ATTR of SRC_DIE. |
21592 | On entry *REF_CU is the CU of SRC_DIE. | |
21593 | On exit *REF_CU is the CU of the result. */ | |
21594 | ||
21595 | static struct die_info * | |
ff39bb5e | 21596 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
21597 | struct dwarf2_cu **ref_cu) |
21598 | { | |
0826b30a | 21599 | sect_offset sect_off = attr->get_ref_die_offset (); |
5c631832 JK |
21600 | struct dwarf2_cu *cu = *ref_cu; |
21601 | struct die_info *die; | |
21602 | ||
9c541725 | 21603 | die = follow_die_offset (sect_off, |
36586728 TT |
21604 | (attr->form == DW_FORM_GNU_ref_alt |
21605 | || cu->per_cu->is_dwz), | |
21606 | ref_cu); | |
5c631832 | 21607 | if (!die) |
9d8780f0 SM |
21608 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
21609 | "at %s [in module %s]"), | |
21610 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
518817b3 | 21611 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
348e048f | 21612 | |
5c631832 JK |
21613 | return die; |
21614 | } | |
21615 | ||
d4c9a4f8 | 21616 | /* See read.h. */ |
5c631832 JK |
21617 | |
21618 | struct dwarf2_locexpr_baton | |
9c541725 | 21619 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
d4c9a4f8 | 21620 | dwarf2_per_cu_data *per_cu, |
8b9737bf | 21621 | CORE_ADDR (*get_frame_pc) (void *baton), |
e4a62c65 | 21622 | void *baton, bool resolve_abstract_p) |
5c631832 | 21623 | { |
918dd910 | 21624 | struct dwarf2_cu *cu; |
5c631832 JK |
21625 | struct die_info *die; |
21626 | struct attribute *attr; | |
21627 | struct dwarf2_locexpr_baton retval; | |
12359b5e SM |
21628 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
21629 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8cf6f0b1 | 21630 | |
918dd910 | 21631 | if (per_cu->cu == NULL) |
58f0c718 | 21632 | load_cu (per_cu, false); |
918dd910 | 21633 | cu = per_cu->cu; |
cc12ce38 DE |
21634 | if (cu == NULL) |
21635 | { | |
21636 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
21637 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
21638 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
21639 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 21640 | } |
918dd910 | 21641 | |
9c541725 | 21642 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 21643 | if (!die) |
9d8780f0 SM |
21644 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
21645 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
21646 | |
21647 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 21648 | if (!attr && resolve_abstract_p |
3360b6e7 | 21649 | && (dwarf2_per_objfile->abstract_to_concrete.find (die->sect_off) |
e4a62c65 TV |
21650 | != dwarf2_per_objfile->abstract_to_concrete.end ())) |
21651 | { | |
21652 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
b3b3bada | 21653 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
eba4caf2 | 21654 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
e4a62c65 | 21655 | |
3360b6e7 TV |
21656 | for (const auto &cand_off |
21657 | : dwarf2_per_objfile->abstract_to_concrete[die->sect_off]) | |
e4a62c65 | 21658 | { |
3360b6e7 TV |
21659 | struct dwarf2_cu *cand_cu = cu; |
21660 | struct die_info *cand | |
21661 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
21662 | if (!cand | |
21663 | || !cand->parent | |
e4a62c65 TV |
21664 | || cand->parent->tag != DW_TAG_subprogram) |
21665 | continue; | |
21666 | ||
21667 | CORE_ADDR pc_low, pc_high; | |
21668 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
21669 | if (pc_low == ((CORE_ADDR) -1)) |
21670 | continue; | |
21671 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
21672 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
21673 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
21674 | continue; |
21675 | ||
21676 | die = cand; | |
21677 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
21678 | break; | |
21679 | } | |
21680 | } | |
21681 | ||
5c631832 JK |
21682 | if (!attr) |
21683 | { | |
e103e986 JK |
21684 | /* DWARF: "If there is no such attribute, then there is no effect.". |
21685 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 21686 | |
e103e986 | 21687 | retval.data = NULL; |
5c631832 JK |
21688 | retval.size = 0; |
21689 | } | |
cd6c91b4 | 21690 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
21691 | { |
21692 | struct dwarf2_loclist_baton loclist_baton; | |
21693 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
21694 | size_t size; | |
21695 | ||
21696 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
21697 | ||
21698 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
21699 | &size, pc); | |
21700 | retval.size = size; | |
21701 | } | |
5c631832 JK |
21702 | else |
21703 | { | |
4fc6c0d5 | 21704 | if (!attr->form_is_block ()) |
9d8780f0 | 21705 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 21706 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 21707 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
21708 | |
21709 | retval.data = DW_BLOCK (attr)->data; | |
21710 | retval.size = DW_BLOCK (attr)->size; | |
21711 | } | |
21712 | retval.per_cu = cu->per_cu; | |
918dd910 | 21713 | |
ed2dc618 | 21714 | age_cached_comp_units (dwarf2_per_objfile); |
918dd910 | 21715 | |
5c631832 | 21716 | return retval; |
348e048f DE |
21717 | } |
21718 | ||
d4c9a4f8 | 21719 | /* See read.h. */ |
8b9737bf TT |
21720 | |
21721 | struct dwarf2_locexpr_baton | |
21722 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
d4c9a4f8 | 21723 | dwarf2_per_cu_data *per_cu, |
8b9737bf TT |
21724 | CORE_ADDR (*get_frame_pc) (void *baton), |
21725 | void *baton) | |
21726 | { | |
9c541725 | 21727 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 21728 | |
9c541725 | 21729 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, get_frame_pc, baton); |
8b9737bf TT |
21730 | } |
21731 | ||
b6807d98 TT |
21732 | /* Write a constant of a given type as target-ordered bytes into |
21733 | OBSTACK. */ | |
21734 | ||
21735 | static const gdb_byte * | |
21736 | write_constant_as_bytes (struct obstack *obstack, | |
21737 | enum bfd_endian byte_order, | |
21738 | struct type *type, | |
21739 | ULONGEST value, | |
21740 | LONGEST *len) | |
21741 | { | |
21742 | gdb_byte *result; | |
21743 | ||
21744 | *len = TYPE_LENGTH (type); | |
224c3ddb | 21745 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
21746 | store_unsigned_integer (result, *len, byte_order, value); |
21747 | ||
21748 | return result; | |
21749 | } | |
21750 | ||
d4c9a4f8 | 21751 | /* See read.h. */ |
b6807d98 TT |
21752 | |
21753 | const gdb_byte * | |
9c541725 | 21754 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
d4c9a4f8 SM |
21755 | dwarf2_per_cu_data *per_cu, |
21756 | obstack *obstack, | |
b6807d98 TT |
21757 | LONGEST *len) |
21758 | { | |
21759 | struct dwarf2_cu *cu; | |
21760 | struct die_info *die; | |
21761 | struct attribute *attr; | |
21762 | const gdb_byte *result = NULL; | |
21763 | struct type *type; | |
21764 | LONGEST value; | |
21765 | enum bfd_endian byte_order; | |
e3b94546 | 21766 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
b6807d98 | 21767 | |
b6807d98 | 21768 | if (per_cu->cu == NULL) |
58f0c718 | 21769 | load_cu (per_cu, false); |
b6807d98 | 21770 | cu = per_cu->cu; |
cc12ce38 DE |
21771 | if (cu == NULL) |
21772 | { | |
21773 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
21774 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
21775 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
21776 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 21777 | } |
b6807d98 | 21778 | |
9c541725 | 21779 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 21780 | if (!die) |
9d8780f0 SM |
21781 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
21782 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
21783 | |
21784 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
21785 | if (attr == NULL) | |
21786 | return NULL; | |
21787 | ||
e3b94546 | 21788 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
21789 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
21790 | ||
21791 | switch (attr->form) | |
21792 | { | |
21793 | case DW_FORM_addr: | |
336d760d | 21794 | case DW_FORM_addrx: |
b6807d98 TT |
21795 | case DW_FORM_GNU_addr_index: |
21796 | { | |
21797 | gdb_byte *tem; | |
21798 | ||
21799 | *len = cu->header.addr_size; | |
224c3ddb | 21800 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
21801 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
21802 | result = tem; | |
21803 | } | |
21804 | break; | |
21805 | case DW_FORM_string: | |
21806 | case DW_FORM_strp: | |
cf532bd1 | 21807 | case DW_FORM_strx: |
b6807d98 TT |
21808 | case DW_FORM_GNU_str_index: |
21809 | case DW_FORM_GNU_strp_alt: | |
21810 | /* DW_STRING is already allocated on the objfile obstack, point | |
21811 | directly to it. */ | |
21812 | result = (const gdb_byte *) DW_STRING (attr); | |
21813 | *len = strlen (DW_STRING (attr)); | |
21814 | break; | |
21815 | case DW_FORM_block1: | |
21816 | case DW_FORM_block2: | |
21817 | case DW_FORM_block4: | |
21818 | case DW_FORM_block: | |
21819 | case DW_FORM_exprloc: | |
0224619f | 21820 | case DW_FORM_data16: |
b6807d98 TT |
21821 | result = DW_BLOCK (attr)->data; |
21822 | *len = DW_BLOCK (attr)->size; | |
21823 | break; | |
21824 | ||
21825 | /* The DW_AT_const_value attributes are supposed to carry the | |
21826 | symbol's value "represented as it would be on the target | |
21827 | architecture." By the time we get here, it's already been | |
21828 | converted to host endianness, so we just need to sign- or | |
21829 | zero-extend it as appropriate. */ | |
21830 | case DW_FORM_data1: | |
21831 | type = die_type (die, cu); | |
21832 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
21833 | if (result == NULL) | |
21834 | result = write_constant_as_bytes (obstack, byte_order, | |
21835 | type, value, len); | |
21836 | break; | |
21837 | case DW_FORM_data2: | |
21838 | type = die_type (die, cu); | |
21839 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
21840 | if (result == NULL) | |
21841 | result = write_constant_as_bytes (obstack, byte_order, | |
21842 | type, value, len); | |
21843 | break; | |
21844 | case DW_FORM_data4: | |
21845 | type = die_type (die, cu); | |
21846 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
21847 | if (result == NULL) | |
21848 | result = write_constant_as_bytes (obstack, byte_order, | |
21849 | type, value, len); | |
21850 | break; | |
21851 | case DW_FORM_data8: | |
21852 | type = die_type (die, cu); | |
21853 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
21854 | if (result == NULL) | |
21855 | result = write_constant_as_bytes (obstack, byte_order, | |
21856 | type, value, len); | |
21857 | break; | |
21858 | ||
21859 | case DW_FORM_sdata: | |
663c44ac | 21860 | case DW_FORM_implicit_const: |
b6807d98 TT |
21861 | type = die_type (die, cu); |
21862 | result = write_constant_as_bytes (obstack, byte_order, | |
21863 | type, DW_SND (attr), len); | |
21864 | break; | |
21865 | ||
21866 | case DW_FORM_udata: | |
21867 | type = die_type (die, cu); | |
21868 | result = write_constant_as_bytes (obstack, byte_order, | |
21869 | type, DW_UNSND (attr), len); | |
21870 | break; | |
21871 | ||
21872 | default: | |
b98664d3 | 21873 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
21874 | dwarf_form_name (attr->form)); |
21875 | break; | |
21876 | } | |
21877 | ||
21878 | return result; | |
21879 | } | |
21880 | ||
d4c9a4f8 | 21881 | /* See read.h. */ |
7942e96e AA |
21882 | |
21883 | struct type * | |
9c541725 | 21884 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
d4c9a4f8 | 21885 | dwarf2_per_cu_data *per_cu) |
7942e96e AA |
21886 | { |
21887 | struct dwarf2_cu *cu; | |
21888 | struct die_info *die; | |
21889 | ||
7942e96e | 21890 | if (per_cu->cu == NULL) |
58f0c718 | 21891 | load_cu (per_cu, false); |
7942e96e AA |
21892 | cu = per_cu->cu; |
21893 | if (!cu) | |
21894 | return NULL; | |
21895 | ||
9c541725 | 21896 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
21897 | if (!die) |
21898 | return NULL; | |
21899 | ||
21900 | return die_type (die, cu); | |
21901 | } | |
21902 | ||
8cb5117c | 21903 | /* See read.h. */ |
8a9b8146 TT |
21904 | |
21905 | struct type * | |
b64f50a1 | 21906 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
21907 | struct dwarf2_per_cu_data *per_cu) |
21908 | { | |
9c541725 | 21909 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
b64f50a1 | 21910 | return get_die_type_at_offset (die_offset_sect, per_cu); |
8a9b8146 TT |
21911 | } |
21912 | ||
ac9ec31b | 21913 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 21914 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
21915 | On exit *REF_CU is the CU of the result. |
21916 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
21917 | |
21918 | static struct die_info * | |
ac9ec31b DE |
21919 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
21920 | struct dwarf2_cu **ref_cu) | |
348e048f | 21921 | { |
348e048f | 21922 | struct die_info temp_die; |
c24bdb02 | 21923 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f DE |
21924 | struct die_info *die; |
21925 | ||
ac9ec31b DE |
21926 | /* While it might be nice to assert sig_type->type == NULL here, |
21927 | we can get here for DW_AT_imported_declaration where we need | |
21928 | the DIE not the type. */ | |
348e048f DE |
21929 | |
21930 | /* If necessary, add it to the queue and load its DIEs. */ | |
21931 | ||
95554aad | 21932 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 21933 | read_signatured_type (sig_type); |
348e048f | 21934 | |
348e048f | 21935 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 21936 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
21937 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
21938 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 21939 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 21940 | to_underlying (temp_die.sect_off)); |
348e048f DE |
21941 | if (die) |
21942 | { | |
ed2dc618 | 21943 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 21944 | = (*ref_cu)->per_cu->dwarf2_per_objfile; |
ed2dc618 | 21945 | |
796a7ff8 DE |
21946 | /* For .gdb_index version 7 keep track of included TUs. |
21947 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
21948 | if (dwarf2_per_objfile->index_table != NULL | |
21949 | && dwarf2_per_objfile->index_table->version <= 7) | |
21950 | { | |
ae640021 | 21951 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
21952 | } |
21953 | ||
348e048f | 21954 | *ref_cu = sig_cu; |
c24bdb02 KS |
21955 | if (sig_cu != cu) |
21956 | sig_cu->ancestor = cu; | |
21957 | ||
348e048f DE |
21958 | return die; |
21959 | } | |
21960 | ||
ac9ec31b DE |
21961 | return NULL; |
21962 | } | |
21963 | ||
21964 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
21965 | On entry *REF_CU is the CU of SRC_DIE. | |
21966 | On exit *REF_CU is the CU of the result. | |
21967 | The result is the DIE of the type. | |
21968 | If the referenced type cannot be found an error is thrown. */ | |
21969 | ||
21970 | static struct die_info * | |
ff39bb5e | 21971 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
21972 | struct dwarf2_cu **ref_cu) |
21973 | { | |
21974 | ULONGEST signature = DW_SIGNATURE (attr); | |
21975 | struct signatured_type *sig_type; | |
21976 | struct die_info *die; | |
21977 | ||
21978 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
21979 | ||
a2ce51a0 | 21980 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
21981 | /* sig_type will be NULL if the signatured type is missing from |
21982 | the debug info. */ | |
21983 | if (sig_type == NULL) | |
21984 | { | |
21985 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
21986 | " from DIE at %s [in module %s]"), |
21987 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 21988 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
21989 | } |
21990 | ||
21991 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
21992 | if (die == NULL) | |
21993 | { | |
21994 | dump_die_for_error (src_die); | |
21995 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
21996 | " from DIE at %s [in module %s]"), |
21997 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 21998 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
21999 | } |
22000 | ||
22001 | return die; | |
22002 | } | |
22003 | ||
22004 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
22005 | reading in and processing the type unit if necessary. */ | |
22006 | ||
22007 | static struct type * | |
22008 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
22009 | struct dwarf2_cu *cu) | |
22010 | { | |
518817b3 SM |
22011 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22012 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
22013 | struct signatured_type *sig_type; |
22014 | struct dwarf2_cu *type_cu; | |
22015 | struct die_info *type_die; | |
22016 | struct type *type; | |
22017 | ||
a2ce51a0 | 22018 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
22019 | /* sig_type will be NULL if the signatured type is missing from |
22020 | the debug info. */ | |
22021 | if (sig_type == NULL) | |
22022 | { | |
b98664d3 | 22023 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
22024 | " from DIE at %s [in module %s]"), |
22025 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22026 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22027 | return build_error_marker_type (cu, die); |
22028 | } | |
22029 | ||
22030 | /* If we already know the type we're done. */ | |
22031 | if (sig_type->type != NULL) | |
22032 | return sig_type->type; | |
22033 | ||
22034 | type_cu = cu; | |
22035 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
22036 | if (type_die != NULL) | |
22037 | { | |
22038 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
22039 | is created. This is important, for example, because for c++ classes | |
22040 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
22041 | type = read_type_die (type_die, type_cu); | |
22042 | if (type == NULL) | |
22043 | { | |
b98664d3 | 22044 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
22045 | " referenced from DIE at %s [in module %s]"), |
22046 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22047 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22048 | type = build_error_marker_type (cu, die); |
22049 | } | |
22050 | } | |
22051 | else | |
22052 | { | |
b98664d3 | 22053 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
22054 | " from DIE at %s [in module %s]"), |
22055 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22056 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22057 | type = build_error_marker_type (cu, die); |
22058 | } | |
22059 | sig_type->type = type; | |
22060 | ||
22061 | return type; | |
22062 | } | |
22063 | ||
22064 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
22065 | reading in and processing the type unit if necessary. */ | |
22066 | ||
22067 | static struct type * | |
ff39bb5e | 22068 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 22069 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
22070 | { |
22071 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 22072 | if (attr->form_is_ref ()) |
ac9ec31b DE |
22073 | { |
22074 | struct dwarf2_cu *type_cu = cu; | |
22075 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
22076 | ||
22077 | return read_type_die (type_die, type_cu); | |
22078 | } | |
22079 | else if (attr->form == DW_FORM_ref_sig8) | |
22080 | { | |
22081 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
22082 | } | |
22083 | else | |
22084 | { | |
518817b3 SM |
22085 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22086 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 22087 | |
b98664d3 | 22088 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
22089 | " at %s [in module %s]"), |
22090 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
4262abfb | 22091 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22092 | return build_error_marker_type (cu, die); |
22093 | } | |
348e048f DE |
22094 | } |
22095 | ||
e5fe5e75 | 22096 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
22097 | |
22098 | static void | |
e5fe5e75 | 22099 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 22100 | { |
52dc124a | 22101 | struct signatured_type *sig_type; |
348e048f | 22102 | |
f4dc4d17 | 22103 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
197400e8 | 22104 | gdb_assert (! per_cu->type_unit_group_p ()); |
f4dc4d17 | 22105 | |
6721b2ec DE |
22106 | /* We have the per_cu, but we need the signatured_type. |
22107 | Fortunately this is an easy translation. */ | |
22108 | gdb_assert (per_cu->is_debug_types); | |
22109 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 22110 | |
6721b2ec | 22111 | gdb_assert (per_cu->cu == NULL); |
348e048f | 22112 | |
52dc124a | 22113 | read_signatured_type (sig_type); |
348e048f | 22114 | |
6721b2ec | 22115 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
22116 | } |
22117 | ||
3019eac3 DE |
22118 | /* Read in a signatured type and build its CU and DIEs. |
22119 | If the type is a stub for the real type in a DWO file, | |
22120 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
22121 | |
22122 | static void | |
22123 | read_signatured_type (struct signatured_type *sig_type) | |
22124 | { | |
22125 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 22126 | |
3019eac3 | 22127 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 22128 | gdb_assert (per_cu->cu == NULL); |
348e048f | 22129 | |
6751ebae | 22130 | cutu_reader reader (per_cu, NULL, 0, false); |
c0ab21c2 TT |
22131 | |
22132 | if (!reader.dummy_p) | |
22133 | { | |
22134 | struct dwarf2_cu *cu = reader.cu; | |
22135 | const gdb_byte *info_ptr = reader.info_ptr; | |
22136 | ||
22137 | gdb_assert (cu->die_hash == NULL); | |
22138 | cu->die_hash = | |
22139 | htab_create_alloc_ex (cu->header.length / 12, | |
22140 | die_hash, | |
22141 | die_eq, | |
22142 | NULL, | |
22143 | &cu->comp_unit_obstack, | |
22144 | hashtab_obstack_allocate, | |
22145 | dummy_obstack_deallocate); | |
22146 | ||
3e225074 | 22147 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
22148 | reader.comp_unit_die->child |
22149 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
22150 | reader.comp_unit_die); | |
22151 | cu->dies = reader.comp_unit_die; | |
22152 | /* comp_unit_die is not stored in die_hash, no need. */ | |
22153 | ||
22154 | /* We try not to read any attributes in this function, because | |
22155 | not all CUs needed for references have been loaded yet, and | |
22156 | symbol table processing isn't initialized. But we have to | |
22157 | set the CU language, or we won't be able to build types | |
22158 | correctly. Similarly, if we do not read the producer, we can | |
22159 | not apply producer-specific interpretation. */ | |
22160 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
6751ebae TT |
22161 | |
22162 | reader.keep (); | |
c0ab21c2 TT |
22163 | } |
22164 | ||
7ee85ab1 | 22165 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
22166 | } |
22167 | ||
c906108c SS |
22168 | /* Decode simple location descriptions. |
22169 | Given a pointer to a dwarf block that defines a location, compute | |
22170 | the location and return the value. | |
22171 | ||
4cecd739 DJ |
22172 | NOTE drow/2003-11-18: This function is called in two situations |
22173 | now: for the address of static or global variables (partial symbols | |
22174 | only) and for offsets into structures which are expected to be | |
22175 | (more or less) constant. The partial symbol case should go away, | |
22176 | and only the constant case should remain. That will let this | |
22177 | function complain more accurately. A few special modes are allowed | |
22178 | without complaint for global variables (for instance, global | |
22179 | register values and thread-local values). | |
c906108c SS |
22180 | |
22181 | A location description containing no operations indicates that the | |
4cecd739 | 22182 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
22183 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
22184 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
22185 | complaint. |
22186 | ||
22187 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
22188 | |
22189 | static CORE_ADDR | |
e7c27a73 | 22190 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 22191 | { |
518817b3 | 22192 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
56eb65bd SP |
22193 | size_t i; |
22194 | size_t size = blk->size; | |
d521ce57 | 22195 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
22196 | CORE_ADDR stack[64]; |
22197 | int stacki; | |
22198 | unsigned int bytes_read, unsnd; | |
22199 | gdb_byte op; | |
c906108c | 22200 | |
21ae7a4d JK |
22201 | i = 0; |
22202 | stacki = 0; | |
22203 | stack[stacki] = 0; | |
22204 | stack[++stacki] = 0; | |
22205 | ||
22206 | while (i < size) | |
22207 | { | |
22208 | op = data[i++]; | |
22209 | switch (op) | |
22210 | { | |
22211 | case DW_OP_lit0: | |
22212 | case DW_OP_lit1: | |
22213 | case DW_OP_lit2: | |
22214 | case DW_OP_lit3: | |
22215 | case DW_OP_lit4: | |
22216 | case DW_OP_lit5: | |
22217 | case DW_OP_lit6: | |
22218 | case DW_OP_lit7: | |
22219 | case DW_OP_lit8: | |
22220 | case DW_OP_lit9: | |
22221 | case DW_OP_lit10: | |
22222 | case DW_OP_lit11: | |
22223 | case DW_OP_lit12: | |
22224 | case DW_OP_lit13: | |
22225 | case DW_OP_lit14: | |
22226 | case DW_OP_lit15: | |
22227 | case DW_OP_lit16: | |
22228 | case DW_OP_lit17: | |
22229 | case DW_OP_lit18: | |
22230 | case DW_OP_lit19: | |
22231 | case DW_OP_lit20: | |
22232 | case DW_OP_lit21: | |
22233 | case DW_OP_lit22: | |
22234 | case DW_OP_lit23: | |
22235 | case DW_OP_lit24: | |
22236 | case DW_OP_lit25: | |
22237 | case DW_OP_lit26: | |
22238 | case DW_OP_lit27: | |
22239 | case DW_OP_lit28: | |
22240 | case DW_OP_lit29: | |
22241 | case DW_OP_lit30: | |
22242 | case DW_OP_lit31: | |
22243 | stack[++stacki] = op - DW_OP_lit0; | |
22244 | break; | |
f1bea926 | 22245 | |
21ae7a4d JK |
22246 | case DW_OP_reg0: |
22247 | case DW_OP_reg1: | |
22248 | case DW_OP_reg2: | |
22249 | case DW_OP_reg3: | |
22250 | case DW_OP_reg4: | |
22251 | case DW_OP_reg5: | |
22252 | case DW_OP_reg6: | |
22253 | case DW_OP_reg7: | |
22254 | case DW_OP_reg8: | |
22255 | case DW_OP_reg9: | |
22256 | case DW_OP_reg10: | |
22257 | case DW_OP_reg11: | |
22258 | case DW_OP_reg12: | |
22259 | case DW_OP_reg13: | |
22260 | case DW_OP_reg14: | |
22261 | case DW_OP_reg15: | |
22262 | case DW_OP_reg16: | |
22263 | case DW_OP_reg17: | |
22264 | case DW_OP_reg18: | |
22265 | case DW_OP_reg19: | |
22266 | case DW_OP_reg20: | |
22267 | case DW_OP_reg21: | |
22268 | case DW_OP_reg22: | |
22269 | case DW_OP_reg23: | |
22270 | case DW_OP_reg24: | |
22271 | case DW_OP_reg25: | |
22272 | case DW_OP_reg26: | |
22273 | case DW_OP_reg27: | |
22274 | case DW_OP_reg28: | |
22275 | case DW_OP_reg29: | |
22276 | case DW_OP_reg30: | |
22277 | case DW_OP_reg31: | |
22278 | stack[++stacki] = op - DW_OP_reg0; | |
22279 | if (i < size) | |
22280 | dwarf2_complex_location_expr_complaint (); | |
22281 | break; | |
c906108c | 22282 | |
21ae7a4d JK |
22283 | case DW_OP_regx: |
22284 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
22285 | i += bytes_read; | |
22286 | stack[++stacki] = unsnd; | |
22287 | if (i < size) | |
22288 | dwarf2_complex_location_expr_complaint (); | |
22289 | break; | |
c906108c | 22290 | |
21ae7a4d | 22291 | case DW_OP_addr: |
c8a7a66f TT |
22292 | stack[++stacki] = cu->header.read_address (objfile->obfd, &data[i], |
22293 | &bytes_read); | |
21ae7a4d JK |
22294 | i += bytes_read; |
22295 | break; | |
d53d4ac5 | 22296 | |
21ae7a4d JK |
22297 | case DW_OP_const1u: |
22298 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
22299 | i += 1; | |
22300 | break; | |
22301 | ||
22302 | case DW_OP_const1s: | |
22303 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
22304 | i += 1; | |
22305 | break; | |
22306 | ||
22307 | case DW_OP_const2u: | |
22308 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
22309 | i += 2; | |
22310 | break; | |
22311 | ||
22312 | case DW_OP_const2s: | |
22313 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
22314 | i += 2; | |
22315 | break; | |
d53d4ac5 | 22316 | |
21ae7a4d JK |
22317 | case DW_OP_const4u: |
22318 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
22319 | i += 4; | |
22320 | break; | |
22321 | ||
22322 | case DW_OP_const4s: | |
22323 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
22324 | i += 4; | |
22325 | break; | |
22326 | ||
585861ea JK |
22327 | case DW_OP_const8u: |
22328 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
22329 | i += 8; | |
22330 | break; | |
22331 | ||
21ae7a4d JK |
22332 | case DW_OP_constu: |
22333 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
22334 | &bytes_read); | |
22335 | i += bytes_read; | |
22336 | break; | |
22337 | ||
22338 | case DW_OP_consts: | |
22339 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
22340 | i += bytes_read; | |
22341 | break; | |
22342 | ||
22343 | case DW_OP_dup: | |
22344 | stack[stacki + 1] = stack[stacki]; | |
22345 | stacki++; | |
22346 | break; | |
22347 | ||
22348 | case DW_OP_plus: | |
22349 | stack[stacki - 1] += stack[stacki]; | |
22350 | stacki--; | |
22351 | break; | |
22352 | ||
22353 | case DW_OP_plus_uconst: | |
22354 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
22355 | &bytes_read); | |
22356 | i += bytes_read; | |
22357 | break; | |
22358 | ||
22359 | case DW_OP_minus: | |
22360 | stack[stacki - 1] -= stack[stacki]; | |
22361 | stacki--; | |
22362 | break; | |
22363 | ||
22364 | case DW_OP_deref: | |
22365 | /* If we're not the last op, then we definitely can't encode | |
22366 | this using GDB's address_class enum. This is valid for partial | |
22367 | global symbols, although the variable's address will be bogus | |
22368 | in the psymtab. */ | |
22369 | if (i < size) | |
22370 | dwarf2_complex_location_expr_complaint (); | |
22371 | break; | |
22372 | ||
22373 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 22374 | case DW_OP_form_tls_address: |
21ae7a4d JK |
22375 | /* The top of the stack has the offset from the beginning |
22376 | of the thread control block at which the variable is located. */ | |
22377 | /* Nothing should follow this operator, so the top of stack would | |
22378 | be returned. */ | |
22379 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
22380 | address will be bogus in the psymtab. Make it always at least |
22381 | non-zero to not look as a variable garbage collected by linker | |
22382 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
22383 | if (i < size) |
22384 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 22385 | stack[stacki]++; |
21ae7a4d JK |
22386 | break; |
22387 | ||
22388 | case DW_OP_GNU_uninit: | |
22389 | break; | |
22390 | ||
336d760d | 22391 | case DW_OP_addrx: |
3019eac3 | 22392 | case DW_OP_GNU_addr_index: |
49f6c839 | 22393 | case DW_OP_GNU_const_index: |
3019eac3 DE |
22394 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
22395 | &bytes_read); | |
22396 | i += bytes_read; | |
22397 | break; | |
22398 | ||
21ae7a4d JK |
22399 | default: |
22400 | { | |
f39c6ffd | 22401 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
22402 | |
22403 | if (name) | |
b98664d3 | 22404 | complaint (_("unsupported stack op: '%s'"), |
21ae7a4d JK |
22405 | name); |
22406 | else | |
b98664d3 | 22407 | complaint (_("unsupported stack op: '%02x'"), |
21ae7a4d JK |
22408 | op); |
22409 | } | |
22410 | ||
22411 | return (stack[stacki]); | |
d53d4ac5 | 22412 | } |
3c6e0cb3 | 22413 | |
21ae7a4d JK |
22414 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
22415 | outside of the allocated space. Also enforce minimum>0. */ | |
22416 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
22417 | { | |
b98664d3 | 22418 | complaint (_("location description stack overflow")); |
21ae7a4d JK |
22419 | return 0; |
22420 | } | |
22421 | ||
22422 | if (stacki <= 0) | |
22423 | { | |
b98664d3 | 22424 | complaint (_("location description stack underflow")); |
21ae7a4d JK |
22425 | return 0; |
22426 | } | |
22427 | } | |
22428 | return (stack[stacki]); | |
c906108c SS |
22429 | } |
22430 | ||
22431 | /* memory allocation interface */ | |
22432 | ||
c906108c | 22433 | static struct dwarf_block * |
7b5a2f43 | 22434 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 22435 | { |
8d749320 | 22436 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
22437 | } |
22438 | ||
c906108c | 22439 | static struct die_info * |
b60c80d6 | 22440 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
22441 | { |
22442 | struct die_info *die; | |
b60c80d6 DJ |
22443 | size_t size = sizeof (struct die_info); |
22444 | ||
22445 | if (num_attrs > 1) | |
22446 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 22447 | |
b60c80d6 | 22448 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
22449 | memset (die, 0, sizeof (struct die_info)); |
22450 | return (die); | |
22451 | } | |
2e276125 JB |
22452 | |
22453 | \f | |
a036ba48 | 22454 | |
c90ec28a | 22455 | /* Macro support. */ |
cf2c3c16 | 22456 | |
9eac9650 TT |
22457 | /* An overload of dwarf_decode_macros that finds the correct section |
22458 | and ensures it is read in before calling the other overload. */ | |
22459 | ||
22460 | static void | |
22461 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, | |
22462 | int section_is_gnu) | |
22463 | { | |
22464 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
22465 | = cu->per_cu->dwarf2_per_objfile; | |
22466 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5a0e026f | 22467 | const struct line_header *lh = cu->line_header; |
9eac9650 TT |
22468 | unsigned int offset_size = cu->header.offset_size; |
22469 | struct dwarf2_section_info *section; | |
22470 | const char *section_name; | |
22471 | ||
22472 | if (cu->dwo_unit != nullptr) | |
22473 | { | |
22474 | if (section_is_gnu) | |
22475 | { | |
22476 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
22477 | section_name = ".debug_macro.dwo"; | |
22478 | } | |
22479 | else | |
22480 | { | |
22481 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
22482 | section_name = ".debug_macinfo.dwo"; | |
22483 | } | |
22484 | } | |
22485 | else | |
22486 | { | |
22487 | if (section_is_gnu) | |
22488 | { | |
22489 | section = &dwarf2_per_objfile->macro; | |
22490 | section_name = ".debug_macro"; | |
22491 | } | |
22492 | else | |
22493 | { | |
22494 | section = &dwarf2_per_objfile->macinfo; | |
22495 | section_name = ".debug_macinfo"; | |
22496 | } | |
22497 | } | |
22498 | ||
22499 | section->read (objfile); | |
22500 | if (section->buffer == nullptr) | |
22501 | { | |
22502 | complaint (_("missing %s section"), section_name); | |
22503 | return; | |
22504 | } | |
22505 | ||
22506 | buildsym_compunit *builder = cu->get_builder (); | |
22507 | ||
22508 | dwarf_decode_macros (dwarf2_per_objfile, builder, section, lh, | |
22509 | offset_size, offset, section_is_gnu); | |
22510 | } | |
22511 | ||
3019eac3 DE |
22512 | /* Return the .debug_loc section to use for CU. |
22513 | For DWO files use .debug_loc.dwo. */ | |
22514 | ||
22515 | static struct dwarf2_section_info * | |
22516 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
22517 | { | |
518817b3 SM |
22518 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22519 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 22520 | |
3019eac3 | 22521 | if (cu->dwo_unit) |
43988095 JK |
22522 | { |
22523 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 22524 | |
43988095 JK |
22525 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
22526 | } | |
22527 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->loclists | |
22528 | : &dwarf2_per_objfile->loc); | |
3019eac3 DE |
22529 | } |
22530 | ||
8cf6f0b1 TT |
22531 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
22532 | ||
22533 | static void | |
22534 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
22535 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 22536 | const struct attribute *attr) |
8cf6f0b1 | 22537 | { |
518817b3 SM |
22538 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22539 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 DE |
22540 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
22541 | ||
96b79293 | 22542 | section->read (dwarf2_per_objfile->objfile); |
8cf6f0b1 TT |
22543 | |
22544 | baton->per_cu = cu->per_cu; | |
22545 | gdb_assert (baton->per_cu); | |
22546 | /* We don't know how long the location list is, but make sure we | |
22547 | don't run off the edge of the section. */ | |
3019eac3 DE |
22548 | baton->size = section->size - DW_UNSND (attr); |
22549 | baton->data = section->buffer + DW_UNSND (attr); | |
2b24b6e4 TT |
22550 | if (cu->base_address.has_value ()) |
22551 | baton->base_address = *cu->base_address; | |
22552 | else | |
22553 | baton->base_address = 0; | |
f664829e | 22554 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
22555 | } |
22556 | ||
4c2df51b | 22557 | static void |
ff39bb5e | 22558 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 22559 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 22560 | { |
518817b3 SM |
22561 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22562 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 22563 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 22564 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 22565 | |
cd6c91b4 | 22566 | if (attr->form_is_section_offset () |
3019eac3 | 22567 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
22568 | the section. If so, fall through to the complaint in the |
22569 | other branch. */ | |
2c7d5afc | 22570 | && DW_UNSND (attr) < section->get_size (objfile)) |
4c2df51b | 22571 | { |
0d53c4c4 | 22572 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 22573 | |
8d749320 | 22574 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 22575 | |
8cf6f0b1 | 22576 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 22577 | |
2b24b6e4 | 22578 | if (!cu->base_address.has_value ()) |
b98664d3 | 22579 | complaint (_("Location list used without " |
3e43a32a | 22580 | "specifying the CU base address.")); |
4c2df51b | 22581 | |
f1e6e072 TT |
22582 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
22583 | ? dwarf2_loclist_block_index | |
22584 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
22585 | SYMBOL_LOCATION_BATON (sym) = baton; |
22586 | } | |
22587 | else | |
22588 | { | |
22589 | struct dwarf2_locexpr_baton *baton; | |
22590 | ||
8d749320 | 22591 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
ae0d2f24 UW |
22592 | baton->per_cu = cu->per_cu; |
22593 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 22594 | |
4fc6c0d5 | 22595 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
22596 | { |
22597 | /* Note that we're just copying the block's data pointer | |
22598 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
22599 | info_buffer for SYM's objfile; right now we never release |
22600 | that buffer, but when we do clean up properly this may | |
22601 | need to change. */ | |
0d53c4c4 DJ |
22602 | baton->size = DW_BLOCK (attr)->size; |
22603 | baton->data = DW_BLOCK (attr)->data; | |
22604 | } | |
22605 | else | |
22606 | { | |
22607 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 22608 | sym->natural_name ()); |
0d53c4c4 | 22609 | baton->size = 0; |
0d53c4c4 | 22610 | } |
6e70227d | 22611 | |
f1e6e072 TT |
22612 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
22613 | ? dwarf2_locexpr_block_index | |
22614 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
22615 | SYMBOL_LOCATION_BATON (sym) = baton; |
22616 | } | |
4c2df51b | 22617 | } |
6502dd73 | 22618 | |
09ba997f | 22619 | /* See read.h. */ |
ae0d2f24 UW |
22620 | |
22621 | struct objfile * | |
09ba997f | 22622 | dwarf2_per_cu_data::objfile () const |
ae0d2f24 | 22623 | { |
09ba997f | 22624 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
ae0d2f24 UW |
22625 | |
22626 | /* Return the master objfile, so that we can report and look up the | |
22627 | correct file containing this variable. */ | |
22628 | if (objfile->separate_debug_objfile_backlink) | |
22629 | objfile = objfile->separate_debug_objfile_backlink; | |
22630 | ||
22631 | return objfile; | |
22632 | } | |
22633 | ||
96408a79 SA |
22634 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
22635 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
22636 | CU_HEADERP first. */ | |
22637 | ||
22638 | static const struct comp_unit_head * | |
22639 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
09ba997f | 22640 | const struct dwarf2_per_cu_data *per_cu) |
96408a79 | 22641 | { |
d521ce57 | 22642 | const gdb_byte *info_ptr; |
96408a79 SA |
22643 | |
22644 | if (per_cu->cu) | |
22645 | return &per_cu->cu->header; | |
22646 | ||
9c541725 | 22647 | info_ptr = per_cu->section->buffer + to_underlying (per_cu->sect_off); |
96408a79 SA |
22648 | |
22649 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
22650 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
22651 | rcuh_kind::COMPILE); | |
96408a79 SA |
22652 | |
22653 | return cu_headerp; | |
22654 | } | |
22655 | ||
09ba997f | 22656 | /* See read.h. */ |
ae0d2f24 | 22657 | |
98714339 | 22658 | int |
09ba997f | 22659 | dwarf2_per_cu_data::addr_size () const |
ae0d2f24 | 22660 | { |
96408a79 SA |
22661 | struct comp_unit_head cu_header_local; |
22662 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 22663 | |
09ba997f | 22664 | cu_headerp = per_cu_header_read_in (&cu_header_local, this); |
96408a79 SA |
22665 | |
22666 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
22667 | } |
22668 | ||
09ba997f | 22669 | /* See read.h. */ |
9eae7c52 TT |
22670 | |
22671 | int | |
09ba997f | 22672 | dwarf2_per_cu_data::offset_size () const |
9eae7c52 | 22673 | { |
96408a79 SA |
22674 | struct comp_unit_head cu_header_local; |
22675 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 22676 | |
09ba997f | 22677 | cu_headerp = per_cu_header_read_in (&cu_header_local, this); |
96408a79 SA |
22678 | |
22679 | return cu_headerp->offset_size; | |
22680 | } | |
22681 | ||
09ba997f | 22682 | /* See read.h. */ |
96408a79 SA |
22683 | |
22684 | int | |
09ba997f | 22685 | dwarf2_per_cu_data::ref_addr_size () const |
96408a79 SA |
22686 | { |
22687 | struct comp_unit_head cu_header_local; | |
22688 | const struct comp_unit_head *cu_headerp; | |
22689 | ||
09ba997f | 22690 | cu_headerp = per_cu_header_read_in (&cu_header_local, this); |
96408a79 SA |
22691 | |
22692 | if (cu_headerp->version == 2) | |
22693 | return cu_headerp->addr_size; | |
22694 | else | |
22695 | return cu_headerp->offset_size; | |
181cebd4 JK |
22696 | } |
22697 | ||
09ba997f | 22698 | /* See read.h. */ |
9aa1f1e3 TT |
22699 | |
22700 | CORE_ADDR | |
09ba997f | 22701 | dwarf2_per_cu_data::text_offset () const |
9aa1f1e3 | 22702 | { |
09ba997f TT |
22703 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
22704 | ||
22705 | return objfile->text_section_offset (); | |
9aa1f1e3 TT |
22706 | } |
22707 | ||
09ba997f TT |
22708 | /* See read.h. */ |
22709 | ||
22710 | struct type * | |
22711 | dwarf2_per_cu_data::addr_type () const | |
9a49df9d | 22712 | { |
09ba997f | 22713 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
9a49df9d AB |
22714 | struct type *void_type = objfile_type (objfile)->builtin_void; |
22715 | struct type *addr_type = lookup_pointer_type (void_type); | |
09ba997f | 22716 | int addr_size = this->addr_size (); |
9a49df9d AB |
22717 | |
22718 | if (TYPE_LENGTH (addr_type) == addr_size) | |
22719 | return addr_type; | |
22720 | ||
09ba997f | 22721 | addr_type = addr_sized_int_type (TYPE_UNSIGNED (addr_type)); |
9a49df9d AB |
22722 | return addr_type; |
22723 | } | |
22724 | ||
22b6cd70 TT |
22725 | /* A helper function for dwarf2_find_containing_comp_unit that returns |
22726 | the index of the result, and that searches a vector. It will | |
22727 | return a result even if the offset in question does not actually | |
22728 | occur in any CU. This is separate so that it can be unit | |
22729 | tested. */ | |
ae038cb0 | 22730 | |
22b6cd70 TT |
22731 | static int |
22732 | dwarf2_find_containing_comp_unit | |
22733 | (sect_offset sect_off, | |
22734 | unsigned int offset_in_dwz, | |
22735 | const std::vector<dwarf2_per_cu_data *> &all_comp_units) | |
ae038cb0 | 22736 | { |
ae038cb0 DJ |
22737 | int low, high; |
22738 | ||
ae038cb0 | 22739 | low = 0; |
22b6cd70 | 22740 | high = all_comp_units.size () - 1; |
ae038cb0 DJ |
22741 | while (high > low) |
22742 | { | |
36586728 | 22743 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 22744 | int mid = low + (high - low) / 2; |
9a619af0 | 22745 | |
22b6cd70 | 22746 | mid_cu = all_comp_units[mid]; |
36586728 | 22747 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 22748 | || (mid_cu->is_dwz == offset_in_dwz |
22b6cd70 | 22749 | && mid_cu->sect_off + mid_cu->length > sect_off)) |
ae038cb0 DJ |
22750 | high = mid; |
22751 | else | |
22752 | low = mid + 1; | |
22753 | } | |
22754 | gdb_assert (low == high); | |
22b6cd70 TT |
22755 | return low; |
22756 | } | |
22757 | ||
22758 | /* Locate the .debug_info compilation unit from CU's objfile which contains | |
22759 | the DIE at OFFSET. Raises an error on failure. */ | |
22760 | ||
22761 | static struct dwarf2_per_cu_data * | |
22762 | dwarf2_find_containing_comp_unit (sect_offset sect_off, | |
22763 | unsigned int offset_in_dwz, | |
22764 | struct dwarf2_per_objfile *dwarf2_per_objfile) | |
22765 | { | |
22766 | int low | |
22767 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
22768 | dwarf2_per_objfile->all_comp_units); | |
22769 | struct dwarf2_per_cu_data *this_cu | |
22770 | = dwarf2_per_objfile->all_comp_units[low]; | |
22771 | ||
45b8ae0c | 22772 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 22773 | { |
36586728 | 22774 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 22775 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
22776 | "offset %s [in module %s]"), |
22777 | sect_offset_str (sect_off), | |
ed2dc618 | 22778 | bfd_get_filename (dwarf2_per_objfile->objfile->obfd)); |
10b3939b | 22779 | |
9c541725 PA |
22780 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->sect_off |
22781 | <= sect_off); | |
ae038cb0 DJ |
22782 | return dwarf2_per_objfile->all_comp_units[low-1]; |
22783 | } | |
22784 | else | |
22785 | { | |
b76e467d | 22786 | if (low == dwarf2_per_objfile->all_comp_units.size () - 1 |
9c541725 | 22787 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 22788 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 22789 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
22790 | return this_cu; |
22791 | } | |
22792 | } | |
22793 | ||
22b6cd70 TT |
22794 | #if GDB_SELF_TEST |
22795 | ||
22796 | namespace selftests { | |
22797 | namespace find_containing_comp_unit { | |
22798 | ||
22799 | static void | |
22800 | run_test () | |
22801 | { | |
22802 | struct dwarf2_per_cu_data one {}; | |
22803 | struct dwarf2_per_cu_data two {}; | |
22804 | struct dwarf2_per_cu_data three {}; | |
22805 | struct dwarf2_per_cu_data four {}; | |
22806 | ||
22807 | one.length = 5; | |
22808 | two.sect_off = sect_offset (one.length); | |
22809 | two.length = 7; | |
22810 | ||
22811 | three.length = 5; | |
22812 | three.is_dwz = 1; | |
22813 | four.sect_off = sect_offset (three.length); | |
22814 | four.length = 7; | |
22815 | four.is_dwz = 1; | |
22816 | ||
22817 | std::vector<dwarf2_per_cu_data *> units; | |
22818 | units.push_back (&one); | |
22819 | units.push_back (&two); | |
22820 | units.push_back (&three); | |
22821 | units.push_back (&four); | |
22822 | ||
22823 | int result; | |
22824 | ||
22825 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 0, units); | |
22826 | SELF_CHECK (units[result] == &one); | |
22827 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 0, units); | |
22828 | SELF_CHECK (units[result] == &one); | |
22829 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 0, units); | |
22830 | SELF_CHECK (units[result] == &two); | |
22831 | ||
22832 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 1, units); | |
22833 | SELF_CHECK (units[result] == &three); | |
22834 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 1, units); | |
22835 | SELF_CHECK (units[result] == &three); | |
22836 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 1, units); | |
22837 | SELF_CHECK (units[result] == &four); | |
22838 | } | |
22839 | ||
22840 | } | |
22841 | } | |
22842 | ||
22843 | #endif /* GDB_SELF_TEST */ | |
22844 | ||
23745b47 | 22845 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 22846 | |
fcd3b13d SM |
22847 | dwarf2_cu::dwarf2_cu (struct dwarf2_per_cu_data *per_cu_) |
22848 | : per_cu (per_cu_), | |
9068261f AB |
22849 | mark (false), |
22850 | has_loclist (false), | |
22851 | checked_producer (false), | |
22852 | producer_is_gxx_lt_4_6 (false), | |
22853 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 22854 | producer_is_icc (false), |
9068261f | 22855 | producer_is_icc_lt_14 (false), |
c258c396 | 22856 | producer_is_codewarrior (false), |
9068261f | 22857 | processing_has_namespace_info (false) |
93311388 | 22858 | { |
fcd3b13d SM |
22859 | per_cu->cu = this; |
22860 | } | |
22861 | ||
22862 | /* Destroy a dwarf2_cu. */ | |
22863 | ||
22864 | dwarf2_cu::~dwarf2_cu () | |
22865 | { | |
22866 | per_cu->cu = NULL; | |
9816fde3 JK |
22867 | } |
22868 | ||
22869 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
22870 | ||
22871 | static void | |
95554aad TT |
22872 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
22873 | enum language pretend_language) | |
9816fde3 JK |
22874 | { |
22875 | struct attribute *attr; | |
22876 | ||
22877 | /* Set the language we're debugging. */ | |
22878 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 22879 | if (attr != nullptr) |
9816fde3 JK |
22880 | set_cu_language (DW_UNSND (attr), cu); |
22881 | else | |
9cded63f | 22882 | { |
95554aad | 22883 | cu->language = pretend_language; |
9cded63f TT |
22884 | cu->language_defn = language_def (cu->language); |
22885 | } | |
dee91e82 | 22886 | |
7d45c7c3 | 22887 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
22888 | } |
22889 | ||
ae038cb0 DJ |
22890 | /* Increase the age counter on each cached compilation unit, and free |
22891 | any that are too old. */ | |
22892 | ||
22893 | static void | |
ed2dc618 | 22894 | age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
22895 | { |
22896 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
22897 | ||
22898 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
22899 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22900 | while (per_cu != NULL) | |
22901 | { | |
22902 | per_cu->cu->last_used ++; | |
b4f54984 | 22903 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
22904 | dwarf2_mark (per_cu->cu); |
22905 | per_cu = per_cu->cu->read_in_chain; | |
22906 | } | |
22907 | ||
22908 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22909 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
22910 | while (per_cu != NULL) | |
22911 | { | |
22912 | struct dwarf2_per_cu_data *next_cu; | |
22913 | ||
22914 | next_cu = per_cu->cu->read_in_chain; | |
22915 | ||
22916 | if (!per_cu->cu->mark) | |
22917 | { | |
fcd3b13d | 22918 | delete per_cu->cu; |
ae038cb0 DJ |
22919 | *last_chain = next_cu; |
22920 | } | |
22921 | else | |
22922 | last_chain = &per_cu->cu->read_in_chain; | |
22923 | ||
22924 | per_cu = next_cu; | |
22925 | } | |
22926 | } | |
22927 | ||
22928 | /* Remove a single compilation unit from the cache. */ | |
22929 | ||
22930 | static void | |
dee91e82 | 22931 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
22932 | { |
22933 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
ed2dc618 SM |
22934 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22935 | = target_per_cu->dwarf2_per_objfile; | |
ae038cb0 DJ |
22936 | |
22937 | per_cu = dwarf2_per_objfile->read_in_chain; | |
22938 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
22939 | while (per_cu != NULL) | |
22940 | { | |
22941 | struct dwarf2_per_cu_data *next_cu; | |
22942 | ||
22943 | next_cu = per_cu->cu->read_in_chain; | |
22944 | ||
dee91e82 | 22945 | if (per_cu == target_per_cu) |
ae038cb0 | 22946 | { |
fcd3b13d | 22947 | delete per_cu->cu; |
dee91e82 | 22948 | per_cu->cu = NULL; |
ae038cb0 DJ |
22949 | *last_chain = next_cu; |
22950 | break; | |
22951 | } | |
22952 | else | |
22953 | last_chain = &per_cu->cu->read_in_chain; | |
22954 | ||
22955 | per_cu = next_cu; | |
22956 | } | |
22957 | } | |
22958 | ||
dee91e82 DE |
22959 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
22960 | We store these in a hash table separate from the DIEs, and preserve them | |
22961 | when the DIEs are flushed out of cache. | |
22962 | ||
22963 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 22964 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
22965 | or the type may come from a DWO file. Furthermore, while it's more logical |
22966 | to use per_cu->section+offset, with Fission the section with the data is in | |
22967 | the DWO file but we don't know that section at the point we need it. | |
22968 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
22969 | because we can enter the lookup routine, get_die_type_at_offset, from | |
22970 | outside this file, and thus won't necessarily have PER_CU->cu. | |
22971 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 22972 | |
dee91e82 | 22973 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 22974 | { |
dee91e82 | 22975 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 22976 | sect_offset sect_off; |
1c379e20 DJ |
22977 | struct type *type; |
22978 | }; | |
22979 | ||
dee91e82 | 22980 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
22981 | |
22982 | static hashval_t | |
dee91e82 | 22983 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 22984 | { |
9a3c8263 SM |
22985 | const struct dwarf2_per_cu_offset_and_type *ofs |
22986 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 22987 | |
9c541725 | 22988 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
22989 | } |
22990 | ||
dee91e82 | 22991 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
22992 | |
22993 | static int | |
dee91e82 | 22994 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 22995 | { |
9a3c8263 SM |
22996 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
22997 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
22998 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
22999 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 23000 | |
dee91e82 | 23001 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 23002 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
23003 | } |
23004 | ||
23005 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
23006 | table if necessary. For convenience, return TYPE. |
23007 | ||
23008 | The DIEs reading must have careful ordering to: | |
85102364 | 23009 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
23010 | reading current DIE. |
23011 | * Not trying to dereference contents of still incompletely read in types | |
23012 | while reading in other DIEs. | |
23013 | * Enable referencing still incompletely read in types just by a pointer to | |
23014 | the type without accessing its fields. | |
23015 | ||
23016 | Therefore caller should follow these rules: | |
23017 | * Try to fetch any prerequisite types we may need to build this DIE type | |
23018 | before building the type and calling set_die_type. | |
e71ec853 | 23019 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
23020 | possible before fetching more types to complete the current type. |
23021 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 23022 | |
f792889a | 23023 | static struct type * |
1c379e20 DJ |
23024 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
23025 | { | |
518817b3 SM |
23026 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23027 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 23028 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
ed2dc618 | 23029 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3cdcd0ce JB |
23030 | struct attribute *attr; |
23031 | struct dynamic_prop prop; | |
1c379e20 | 23032 | |
b4ba55a1 JB |
23033 | /* For Ada types, make sure that the gnat-specific data is always |
23034 | initialized (if not already set). There are a few types where | |
23035 | we should not be doing so, because the type-specific area is | |
23036 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
23037 | where the type-specific area is used to store the floatformat). | |
23038 | But this is not a problem, because the gnat-specific information | |
23039 | is actually not needed for these types. */ | |
23040 | if (need_gnat_info (cu) | |
23041 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
23042 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
23043 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
23044 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
23045 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
23046 | && !HAVE_GNAT_AUX_INFO (type)) |
23047 | INIT_GNAT_SPECIFIC (type); | |
23048 | ||
3f2f83dd KB |
23049 | /* Read DW_AT_allocated and set in type. */ |
23050 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
4fc6c0d5 | 23051 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 23052 | { |
09ba997f | 23053 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
9a49df9d | 23054 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
50a82047 | 23055 | add_dyn_prop (DYN_PROP_ALLOCATED, prop, type); |
3f2f83dd KB |
23056 | } |
23057 | else if (attr != NULL) | |
23058 | { | |
b98664d3 | 23059 | complaint (_("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 23060 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 23061 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
23062 | } |
23063 | ||
23064 | /* Read DW_AT_associated and set in type. */ | |
23065 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
4fc6c0d5 | 23066 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 23067 | { |
09ba997f | 23068 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
9a49df9d | 23069 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
50a82047 | 23070 | add_dyn_prop (DYN_PROP_ASSOCIATED, prop, type); |
3f2f83dd KB |
23071 | } |
23072 | else if (attr != NULL) | |
23073 | { | |
b98664d3 | 23074 | complaint (_("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 23075 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 23076 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
23077 | } |
23078 | ||
3cdcd0ce JB |
23079 | /* Read DW_AT_data_location and set in type. */ |
23080 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
9a49df9d | 23081 | if (attr_to_dynamic_prop (attr, die, cu, &prop, |
09ba997f | 23082 | cu->per_cu->addr_type ())) |
50a82047 | 23083 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type); |
3cdcd0ce | 23084 | |
dee91e82 | 23085 | if (dwarf2_per_objfile->die_type_hash == NULL) |
0335378b TT |
23086 | dwarf2_per_objfile->die_type_hash |
23087 | = htab_up (htab_create_alloc (127, | |
23088 | per_cu_offset_and_type_hash, | |
23089 | per_cu_offset_and_type_eq, | |
23090 | NULL, xcalloc, xfree)); | |
1c379e20 | 23091 | |
dee91e82 | 23092 | ofs.per_cu = cu->per_cu; |
9c541725 | 23093 | ofs.sect_off = die->sect_off; |
1c379e20 | 23094 | ofs.type = type; |
dee91e82 | 23095 | slot = (struct dwarf2_per_cu_offset_and_type **) |
0335378b | 23096 | htab_find_slot (dwarf2_per_objfile->die_type_hash.get (), &ofs, INSERT); |
7e314c57 | 23097 | if (*slot) |
b98664d3 | 23098 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 23099 | sect_offset_str (die->sect_off)); |
8d749320 SM |
23100 | *slot = XOBNEW (&objfile->objfile_obstack, |
23101 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 23102 | **slot = ofs; |
f792889a | 23103 | return type; |
1c379e20 DJ |
23104 | } |
23105 | ||
9c541725 | 23106 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 23107 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
23108 | |
23109 | static struct type * | |
9c541725 | 23110 | get_die_type_at_offset (sect_offset sect_off, |
673bfd45 | 23111 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 23112 | { |
dee91e82 | 23113 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
ed2dc618 | 23114 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
f792889a | 23115 | |
dee91e82 | 23116 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 23117 | return NULL; |
1c379e20 | 23118 | |
dee91e82 | 23119 | ofs.per_cu = per_cu; |
9c541725 | 23120 | ofs.sect_off = sect_off; |
9a3c8263 | 23121 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
0335378b | 23122 | htab_find (dwarf2_per_objfile->die_type_hash.get (), &ofs)); |
1c379e20 DJ |
23123 | if (slot) |
23124 | return slot->type; | |
23125 | else | |
23126 | return NULL; | |
23127 | } | |
23128 | ||
02142a6c | 23129 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
23130 | or return NULL if DIE does not have a saved type. */ |
23131 | ||
23132 | static struct type * | |
23133 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
23134 | { | |
9c541725 | 23135 | return get_die_type_at_offset (die->sect_off, cu->per_cu); |
673bfd45 DE |
23136 | } |
23137 | ||
10b3939b DJ |
23138 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
23139 | ||
23140 | static void | |
23141 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
23142 | struct dwarf2_per_cu_data *ref_per_cu) | |
23143 | { | |
23144 | void **slot; | |
23145 | ||
23146 | if (cu->dependencies == NULL) | |
23147 | cu->dependencies | |
23148 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
23149 | NULL, &cu->comp_unit_obstack, | |
23150 | hashtab_obstack_allocate, | |
23151 | dummy_obstack_deallocate); | |
23152 | ||
23153 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
23154 | if (*slot == NULL) | |
23155 | *slot = ref_per_cu; | |
23156 | } | |
1c379e20 | 23157 | |
f504f079 DE |
23158 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
23159 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
23160 | cache that we must keep because we are keeping CU. */ |
23161 | ||
10b3939b DJ |
23162 | static int |
23163 | dwarf2_mark_helper (void **slot, void *data) | |
23164 | { | |
23165 | struct dwarf2_per_cu_data *per_cu; | |
23166 | ||
23167 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
23168 | |
23169 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
23170 | reading of the chain. As such dependencies remain valid it is not much | |
23171 | useful to track and undo them during QUIT cleanups. */ | |
23172 | if (per_cu->cu == NULL) | |
23173 | return 1; | |
23174 | ||
10b3939b DJ |
23175 | if (per_cu->cu->mark) |
23176 | return 1; | |
9068261f | 23177 | per_cu->cu->mark = true; |
10b3939b DJ |
23178 | |
23179 | if (per_cu->cu->dependencies != NULL) | |
23180 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
23181 | ||
23182 | return 1; | |
23183 | } | |
23184 | ||
f504f079 DE |
23185 | /* Set the mark field in CU and in every other compilation unit in the |
23186 | cache that we must keep because we are keeping CU. */ | |
23187 | ||
ae038cb0 DJ |
23188 | static void |
23189 | dwarf2_mark (struct dwarf2_cu *cu) | |
23190 | { | |
23191 | if (cu->mark) | |
23192 | return; | |
9068261f | 23193 | cu->mark = true; |
10b3939b DJ |
23194 | if (cu->dependencies != NULL) |
23195 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
23196 | } |
23197 | ||
23198 | static void | |
23199 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
23200 | { | |
23201 | while (per_cu) | |
23202 | { | |
9068261f | 23203 | per_cu->cu->mark = false; |
ae038cb0 DJ |
23204 | per_cu = per_cu->cu->read_in_chain; |
23205 | } | |
72bf9492 DJ |
23206 | } |
23207 | ||
72bf9492 DJ |
23208 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
23209 | is its offset in .debug_info for this objfile. */ | |
23210 | ||
23211 | static hashval_t | |
23212 | partial_die_hash (const void *item) | |
23213 | { | |
9a3c8263 SM |
23214 | const struct partial_die_info *part_die |
23215 | = (const struct partial_die_info *) item; | |
9a619af0 | 23216 | |
9c541725 | 23217 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
23218 | } |
23219 | ||
23220 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
23221 | are equal if they have the same offset. */ | |
23222 | ||
23223 | static int | |
23224 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
23225 | { | |
9a3c8263 SM |
23226 | const struct partial_die_info *part_die_lhs |
23227 | = (const struct partial_die_info *) item_lhs; | |
23228 | const struct partial_die_info *part_die_rhs | |
23229 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 23230 | |
9c541725 | 23231 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
23232 | } |
23233 | ||
3c3bb058 AB |
23234 | struct cmd_list_element *set_dwarf_cmdlist; |
23235 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
23236 | |
23237 | static void | |
981a3fb3 | 23238 | set_dwarf_cmd (const char *args, int from_tty) |
ae038cb0 | 23239 | { |
b4f54984 | 23240 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 23241 | gdb_stdout); |
ae038cb0 DJ |
23242 | } |
23243 | ||
23244 | static void | |
981a3fb3 | 23245 | show_dwarf_cmd (const char *args, int from_tty) |
6e70227d | 23246 | { |
b4f54984 | 23247 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
23248 | } |
23249 | ||
9291a0cd | 23250 | static void |
cd4fb1b2 SM |
23251 | show_check_physname (struct ui_file *file, int from_tty, |
23252 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 23253 | { |
cd4fb1b2 SM |
23254 | fprintf_filtered (file, |
23255 | _("Whether to check \"physname\" is %s.\n"), | |
23256 | value); | |
9291a0cd TT |
23257 | } |
23258 | ||
6c265988 | 23259 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 23260 | void |
6c265988 | 23261 | _initialize_dwarf2_read () |
9291a0cd | 23262 | { |
cd4fb1b2 SM |
23263 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
23264 | Set DWARF specific variables.\n\ | |
590042fc | 23265 | Configure DWARF variables such as the cache size."), |
cd4fb1b2 SM |
23266 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
23267 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 23268 | |
cd4fb1b2 | 23269 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
590042fc PW |
23270 | Show DWARF specific variables.\n\ |
23271 | Show DWARF variables such as the cache size."), | |
cd4fb1b2 SM |
23272 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
23273 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 23274 | |
cd4fb1b2 SM |
23275 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
23276 | &dwarf_max_cache_age, _("\ | |
23277 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
23278 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
23279 | A higher limit means that cached compilation units will be stored\n\ | |
23280 | in memory longer, and more total memory will be used. Zero disables\n\ | |
23281 | caching, which can slow down startup."), | |
23282 | NULL, | |
23283 | show_dwarf_max_cache_age, | |
23284 | &set_dwarf_cmdlist, | |
23285 | &show_dwarf_cmdlist); | |
156942c7 | 23286 | |
cd4fb1b2 SM |
23287 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
23288 | Set debugging of the DWARF reader."), _("\ | |
23289 | Show debugging of the DWARF reader."), _("\ | |
23290 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
23291 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
23292 | information. A value greater than 1 provides more verbose information."), | |
23293 | NULL, | |
23294 | NULL, | |
23295 | &setdebuglist, &showdebuglist); | |
9291a0cd | 23296 | |
cd4fb1b2 SM |
23297 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
23298 | Set debugging of the DWARF DIE reader."), _("\ | |
23299 | Show debugging of the DWARF DIE reader."), _("\ | |
23300 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
23301 | The value is the maximum depth to print."), | |
23302 | NULL, | |
23303 | NULL, | |
23304 | &setdebuglist, &showdebuglist); | |
9291a0cd | 23305 | |
cd4fb1b2 SM |
23306 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
23307 | Set debugging of the dwarf line reader."), _("\ | |
23308 | Show debugging of the dwarf line reader."), _("\ | |
23309 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
23310 | A value of 1 (one) provides basic information.\n\ | |
23311 | A value greater than 1 provides more verbose information."), | |
23312 | NULL, | |
23313 | NULL, | |
23314 | &setdebuglist, &showdebuglist); | |
437afbb8 | 23315 | |
cd4fb1b2 SM |
23316 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
23317 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
23318 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
23319 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
23320 | the demangler."), | |
23321 | NULL, show_check_physname, | |
23322 | &setdebuglist, &showdebuglist); | |
900e11f9 | 23323 | |
e615022a DE |
23324 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
23325 | no_class, &use_deprecated_index_sections, _("\ | |
23326 | Set whether to use deprecated gdb_index sections."), _("\ | |
23327 | Show whether to use deprecated gdb_index sections."), _("\ | |
23328 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
23329 | Normally they are ignored either because of a missing feature or\n\ | |
23330 | performance issue.\n\ | |
23331 | Warning: This option must be enabled before gdb reads the file."), | |
23332 | NULL, | |
23333 | NULL, | |
23334 | &setlist, &showlist); | |
23335 | ||
f1e6e072 TT |
23336 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
23337 | &dwarf2_locexpr_funcs); | |
23338 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
23339 | &dwarf2_loclist_funcs); | |
23340 | ||
23341 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
23342 | &dwarf2_block_frame_base_locexpr_funcs); | |
23343 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
23344 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
23345 | |
23346 | #if GDB_SELF_TEST | |
23347 | selftests::register_test ("dw2_expand_symtabs_matching", | |
23348 | selftests::dw2_expand_symtabs_matching::run_test); | |
22b6cd70 TT |
23349 | selftests::register_test ("dwarf2_find_containing_comp_unit", |
23350 | selftests::find_containing_comp_unit::run_test); | |
c62446b1 | 23351 | #endif |
6502dd73 | 23352 | } |