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 | ||
41144253 | 117 | /* Size of .debug_loclists section header for 32-bit DWARF format. */ |
118 | #define LOCLIST_HEADER_SIZE32 12 | |
119 | ||
120 | /* Size of .debug_loclists section header for 64-bit DWARF format. */ | |
121 | #define LOCLIST_HEADER_SIZE64 20 | |
122 | ||
3f563c84 PA |
123 | /* An index into a (C++) symbol name component in a symbol name as |
124 | recorded in the mapped_index's symbol table. For each C++ symbol | |
125 | in the symbol table, we record one entry for the start of each | |
126 | component in the symbol in a table of name components, and then | |
127 | sort the table, in order to be able to binary search symbol names, | |
128 | ignoring leading namespaces, both completion and regular look up. | |
129 | For example, for symbol "A::B::C", we'll have an entry that points | |
130 | to "A::B::C", another that points to "B::C", and another for "C". | |
131 | Note that function symbols in GDB index have no parameter | |
132 | information, just the function/method names. You can convert a | |
133 | name_component to a "const char *" using the | |
134 | 'mapped_index::symbol_name_at(offset_type)' method. */ | |
135 | ||
136 | struct name_component | |
137 | { | |
138 | /* Offset in the symbol name where the component starts. Stored as | |
139 | a (32-bit) offset instead of a pointer to save memory and improve | |
140 | locality on 64-bit architectures. */ | |
141 | offset_type name_offset; | |
142 | ||
143 | /* The symbol's index in the symbol and constant pool tables of a | |
144 | mapped_index. */ | |
145 | offset_type idx; | |
146 | }; | |
147 | ||
44ed8f3e PA |
148 | /* Base class containing bits shared by both .gdb_index and |
149 | .debug_name indexes. */ | |
150 | ||
151 | struct mapped_index_base | |
152 | { | |
22ca247e TT |
153 | mapped_index_base () = default; |
154 | DISABLE_COPY_AND_ASSIGN (mapped_index_base); | |
155 | ||
44ed8f3e PA |
156 | /* The name_component table (a sorted vector). See name_component's |
157 | description above. */ | |
158 | std::vector<name_component> name_components; | |
159 | ||
160 | /* How NAME_COMPONENTS is sorted. */ | |
161 | enum case_sensitivity name_components_casing; | |
162 | ||
163 | /* Return the number of names in the symbol table. */ | |
164 | virtual size_t symbol_name_count () const = 0; | |
165 | ||
166 | /* Get the name of the symbol at IDX in the symbol table. */ | |
167 | virtual const char *symbol_name_at (offset_type idx) const = 0; | |
168 | ||
169 | /* Return whether the name at IDX in the symbol table should be | |
170 | ignored. */ | |
171 | virtual bool symbol_name_slot_invalid (offset_type idx) const | |
172 | { | |
173 | return false; | |
174 | } | |
175 | ||
176 | /* Build the symbol name component sorted vector, if we haven't | |
177 | yet. */ | |
178 | void build_name_components (); | |
179 | ||
180 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
181 | possible matches for LN_NO_PARAMS in the name component | |
182 | vector. */ | |
183 | std::pair<std::vector<name_component>::const_iterator, | |
184 | std::vector<name_component>::const_iterator> | |
3b00ef10 TT |
185 | find_name_components_bounds (const lookup_name_info &ln_no_params, |
186 | enum language lang) const; | |
44ed8f3e PA |
187 | |
188 | /* Prevent deleting/destroying via a base class pointer. */ | |
189 | protected: | |
190 | ~mapped_index_base() = default; | |
191 | }; | |
192 | ||
9291a0cd TT |
193 | /* A description of the mapped index. The file format is described in |
194 | a comment by the code that writes the index. */ | |
fc898b42 | 195 | struct mapped_index final : public mapped_index_base |
9291a0cd | 196 | { |
f00a2de2 PA |
197 | /* A slot/bucket in the symbol table hash. */ |
198 | struct symbol_table_slot | |
199 | { | |
200 | const offset_type name; | |
201 | const offset_type vec; | |
202 | }; | |
203 | ||
559a7a62 | 204 | /* Index data format version. */ |
3063847f | 205 | int version = 0; |
559a7a62 | 206 | |
f00a2de2 PA |
207 | /* The address table data. */ |
208 | gdb::array_view<const gdb_byte> address_table; | |
b11b1f88 | 209 | |
3876f04e | 210 | /* The symbol table, implemented as a hash table. */ |
f00a2de2 | 211 | gdb::array_view<symbol_table_slot> symbol_table; |
b11b1f88 | 212 | |
9291a0cd | 213 | /* A pointer to the constant pool. */ |
3063847f | 214 | const char *constant_pool = nullptr; |
3f563c84 | 215 | |
44ed8f3e PA |
216 | bool symbol_name_slot_invalid (offset_type idx) const override |
217 | { | |
218 | const auto &bucket = this->symbol_table[idx]; | |
9ab08412 | 219 | return bucket.name == 0 && bucket.vec == 0; |
44ed8f3e | 220 | } |
5c58de74 | 221 | |
3f563c84 PA |
222 | /* Convenience method to get at the name of the symbol at IDX in the |
223 | symbol table. */ | |
44ed8f3e | 224 | const char *symbol_name_at (offset_type idx) const override |
f00a2de2 | 225 | { return this->constant_pool + MAYBE_SWAP (this->symbol_table[idx].name); } |
5c58de74 | 226 | |
44ed8f3e PA |
227 | size_t symbol_name_count () const override |
228 | { return this->symbol_table.size (); } | |
9291a0cd TT |
229 | }; |
230 | ||
927aa2e7 JK |
231 | /* A description of the mapped .debug_names. |
232 | Uninitialized map has CU_COUNT 0. */ | |
fc898b42 | 233 | struct mapped_debug_names final : public mapped_index_base |
927aa2e7 | 234 | { |
ed2dc618 SM |
235 | mapped_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile_) |
236 | : dwarf2_per_objfile (dwarf2_per_objfile_) | |
237 | {} | |
238 | ||
239 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
927aa2e7 JK |
240 | bfd_endian dwarf5_byte_order; |
241 | bool dwarf5_is_dwarf64; | |
242 | bool augmentation_is_gdb; | |
243 | uint8_t offset_size; | |
244 | uint32_t cu_count = 0; | |
245 | uint32_t tu_count, bucket_count, name_count; | |
246 | const gdb_byte *cu_table_reordered, *tu_table_reordered; | |
247 | const uint32_t *bucket_table_reordered, *hash_table_reordered; | |
248 | const gdb_byte *name_table_string_offs_reordered; | |
249 | const gdb_byte *name_table_entry_offs_reordered; | |
250 | const gdb_byte *entry_pool; | |
251 | ||
252 | struct index_val | |
253 | { | |
254 | ULONGEST dwarf_tag; | |
255 | struct attr | |
256 | { | |
257 | /* Attribute name DW_IDX_*. */ | |
258 | ULONGEST dw_idx; | |
259 | ||
260 | /* Attribute form DW_FORM_*. */ | |
261 | ULONGEST form; | |
262 | ||
263 | /* Value if FORM is DW_FORM_implicit_const. */ | |
264 | LONGEST implicit_const; | |
265 | }; | |
266 | std::vector<attr> attr_vec; | |
267 | }; | |
268 | ||
269 | std::unordered_map<ULONGEST, index_val> abbrev_map; | |
270 | ||
271 | const char *namei_to_name (uint32_t namei) const; | |
44ed8f3e PA |
272 | |
273 | /* Implementation of the mapped_index_base virtual interface, for | |
274 | the name_components cache. */ | |
275 | ||
276 | const char *symbol_name_at (offset_type idx) const override | |
277 | { return namei_to_name (idx); } | |
278 | ||
279 | size_t symbol_name_count () const override | |
280 | { return this->name_count; } | |
927aa2e7 JK |
281 | }; |
282 | ||
cd4fb1b2 | 283 | /* See dwarf2read.h. */ |
ed2dc618 | 284 | |
cd4fb1b2 | 285 | dwarf2_per_objfile * |
ed2dc618 SM |
286 | get_dwarf2_per_objfile (struct objfile *objfile) |
287 | { | |
5bfd760d | 288 | return dwarf2_objfile_data_key.get (objfile); |
ed2dc618 | 289 | } |
c906108c | 290 | |
251d32d9 | 291 | /* Default names of the debugging sections. */ |
c906108c | 292 | |
233a11ab CS |
293 | /* Note that if the debugging section has been compressed, it might |
294 | have a name like .zdebug_info. */ | |
295 | ||
9cdd5dbd DE |
296 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
297 | { | |
251d32d9 TG |
298 | { ".debug_info", ".zdebug_info" }, |
299 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
300 | { ".debug_line", ".zdebug_line" }, | |
301 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 302 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 303 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 304 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 305 | { ".debug_str", ".zdebug_str" }, |
18a8505e | 306 | { ".debug_str_offsets", ".zdebug_str_offsets" }, |
43988095 | 307 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 308 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 309 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 310 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 311 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
312 | { ".debug_frame", ".zdebug_frame" }, |
313 | { ".eh_frame", NULL }, | |
24d3216f | 314 | { ".gdb_index", ".zgdb_index" }, |
927aa2e7 JK |
315 | { ".debug_names", ".zdebug_names" }, |
316 | { ".debug_aranges", ".zdebug_aranges" }, | |
24d3216f | 317 | 23 |
251d32d9 | 318 | }; |
c906108c | 319 | |
80626a55 | 320 | /* List of DWO/DWP sections. */ |
3019eac3 | 321 | |
80626a55 | 322 | static const struct dwop_section_names |
3019eac3 DE |
323 | { |
324 | struct dwarf2_section_names abbrev_dwo; | |
325 | struct dwarf2_section_names info_dwo; | |
326 | struct dwarf2_section_names line_dwo; | |
327 | struct dwarf2_section_names loc_dwo; | |
43988095 | 328 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
329 | struct dwarf2_section_names macinfo_dwo; |
330 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
331 | struct dwarf2_section_names str_dwo; |
332 | struct dwarf2_section_names str_offsets_dwo; | |
333 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
334 | struct dwarf2_section_names cu_index; |
335 | struct dwarf2_section_names tu_index; | |
3019eac3 | 336 | } |
80626a55 | 337 | dwop_section_names = |
3019eac3 DE |
338 | { |
339 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
340 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
341 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
342 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 343 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
344 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
345 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
346 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
347 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
348 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
349 | { ".debug_cu_index", ".zdebug_cu_index" }, |
350 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
351 | }; |
352 | ||
c906108c SS |
353 | /* local data types */ |
354 | ||
41144253 | 355 | /* The location list section (.debug_loclists) begins with a header, |
356 | which contains the following information. */ | |
357 | struct loclist_header | |
358 | { | |
359 | /* A 4-byte or 12-byte length containing the length of the | |
360 | set of entries for this compilation unit, not including the | |
361 | length field itself. */ | |
362 | unsigned int length; | |
363 | ||
364 | /* A 2-byte version identifier. */ | |
365 | short version; | |
366 | ||
367 | /* A 1-byte unsigned integer containing the size in bytes of an address on | |
368 | the target system. */ | |
369 | unsigned char addr_size; | |
370 | ||
371 | /* A 1-byte unsigned integer containing the size in bytes of a segment selector | |
372 | on the target system. */ | |
373 | unsigned char segment_collector_size; | |
374 | ||
375 | /* A 4-byte count of the number of offsets that follow the header. */ | |
376 | unsigned int offset_entry_count; | |
377 | }; | |
378 | ||
3da10d80 KS |
379 | /* Type used for delaying computation of method physnames. |
380 | See comments for compute_delayed_physnames. */ | |
381 | struct delayed_method_info | |
382 | { | |
383 | /* The type to which the method is attached, i.e., its parent class. */ | |
384 | struct type *type; | |
385 | ||
386 | /* The index of the method in the type's function fieldlists. */ | |
387 | int fnfield_index; | |
388 | ||
389 | /* The index of the method in the fieldlist. */ | |
390 | int index; | |
391 | ||
392 | /* The name of the DIE. */ | |
393 | const char *name; | |
394 | ||
395 | /* The DIE associated with this method. */ | |
396 | struct die_info *die; | |
397 | }; | |
398 | ||
e7c27a73 DJ |
399 | /* Internal state when decoding a particular compilation unit. */ |
400 | struct dwarf2_cu | |
401 | { | |
fcd3b13d SM |
402 | explicit dwarf2_cu (struct dwarf2_per_cu_data *per_cu); |
403 | ~dwarf2_cu (); | |
404 | ||
405 | DISABLE_COPY_AND_ASSIGN (dwarf2_cu); | |
406 | ||
c24bdb02 KS |
407 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
408 | Create the set of symtabs used by this TU, or if this TU is sharing | |
409 | symtabs with another TU and the symtabs have already been created | |
410 | then restore those symtabs in the line header. | |
411 | We don't need the pc/line-number mapping for type units. */ | |
412 | void setup_type_unit_groups (struct die_info *die); | |
413 | ||
414 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the | |
415 | buildsym_compunit constructor. */ | |
416 | struct compunit_symtab *start_symtab (const char *name, | |
417 | const char *comp_dir, | |
418 | CORE_ADDR low_pc); | |
419 | ||
420 | /* Reset the builder. */ | |
421 | void reset_builder () { m_builder.reset (); } | |
422 | ||
d00adf39 | 423 | /* The header of the compilation unit. */ |
fcd3b13d | 424 | struct comp_unit_head header {}; |
e142c38c | 425 | |
d00adf39 | 426 | /* Base address of this compilation unit. */ |
2b24b6e4 | 427 | gdb::optional<CORE_ADDR> base_address; |
d00adf39 | 428 | |
e142c38c | 429 | /* The language we are debugging. */ |
fcd3b13d SM |
430 | enum language language = language_unknown; |
431 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 432 | |
fcd3b13d | 433 | const char *producer = nullptr; |
b0f35d58 | 434 | |
c24bdb02 | 435 | private: |
804d2729 TT |
436 | /* The symtab builder for this CU. This is only non-NULL when full |
437 | symbols are being read. */ | |
c24bdb02 | 438 | std::unique_ptr<buildsym_compunit> m_builder; |
804d2729 | 439 | |
c24bdb02 | 440 | public: |
e142c38c DJ |
441 | /* The generic symbol table building routines have separate lists for |
442 | file scope symbols and all all other scopes (local scopes). So | |
443 | we need to select the right one to pass to add_symbol_to_list(). | |
444 | We do it by keeping a pointer to the correct list in list_in_scope. | |
445 | ||
446 | FIXME: The original dwarf code just treated the file scope as the | |
447 | first local scope, and all other local scopes as nested local | |
448 | scopes, and worked fine. Check to see if we really need to | |
449 | distinguish these in buildsym.c. */ | |
fcd3b13d | 450 | struct pending **list_in_scope = nullptr; |
e142c38c | 451 | |
b64f50a1 JK |
452 | /* Hash table holding all the loaded partial DIEs |
453 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 454 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
455 | |
456 | /* Storage for things with the same lifetime as this read-in compilation | |
457 | unit, including partial DIEs. */ | |
fcd3b13d | 458 | auto_obstack comp_unit_obstack; |
72bf9492 | 459 | |
ae038cb0 DJ |
460 | /* When multiple dwarf2_cu structures are living in memory, this field |
461 | chains them all together, so that they can be released efficiently. | |
462 | We will probably also want a generation counter so that most-recently-used | |
463 | compilation units are cached... */ | |
fcd3b13d | 464 | struct dwarf2_per_cu_data *read_in_chain = nullptr; |
ae038cb0 | 465 | |
69d751e3 | 466 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
467 | struct dwarf2_per_cu_data *per_cu; |
468 | ||
469 | /* How many compilation units ago was this CU last referenced? */ | |
fcd3b13d | 470 | int last_used = 0; |
ae038cb0 | 471 | |
b64f50a1 JK |
472 | /* A hash table of DIE cu_offset for following references with |
473 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 474 | htab_t die_hash = nullptr; |
10b3939b DJ |
475 | |
476 | /* Full DIEs if read in. */ | |
fcd3b13d | 477 | struct die_info *dies = nullptr; |
10b3939b DJ |
478 | |
479 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
480 | units referenced by this one. Only set during full symbol processing; | |
481 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 482 | htab_t dependencies = nullptr; |
10b3939b | 483 | |
cb1df416 | 484 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 485 | struct line_header *line_header = nullptr; |
4c8aa72d PA |
486 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
487 | it's owned by dwarf2_per_objfile::line_header_hash. If non-NULL, | |
488 | this is the DW_TAG_compile_unit die for this CU. We'll hold on | |
489 | to the line header as long as this DIE is being processed. See | |
490 | process_die_scope. */ | |
fcd3b13d | 491 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 492 | |
3da10d80 KS |
493 | /* A list of methods which need to have physnames computed |
494 | after all type information has been read. */ | |
c89b44cd | 495 | std::vector<delayed_method_info> method_list; |
3da10d80 | 496 | |
96408a79 | 497 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 498 | htab_t call_site_htab = nullptr; |
96408a79 | 499 | |
034e5797 DE |
500 | /* Non-NULL if this CU came from a DWO file. |
501 | There is an invariant here that is important to remember: | |
502 | Except for attributes copied from the top level DIE in the "main" | |
503 | (or "stub") file in preparation for reading the DWO file | |
18a8505e | 504 | (e.g., DW_AT_addr_base), we KISS: there is only *one* CU. |
034e5797 DE |
505 | Either there isn't a DWO file (in which case this is NULL and the point |
506 | is moot), or there is and either we're not going to read it (in which | |
507 | case this is NULL) or there is and we are reading it (in which case this | |
508 | is non-NULL). */ | |
fcd3b13d | 509 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 | 510 | |
18a8505e | 511 | /* The DW_AT_addr_base (DW_AT_GNU_addr_base) attribute if present. |
1dbab08b | 512 | Note this value comes from the Fission stub CU/TU's DIE. */ |
18a8505e | 513 | gdb::optional<ULONGEST> addr_base; |
3019eac3 | 514 | |
18a8505e | 515 | /* The DW_AT_rnglists_base attribute if present. |
1dbab08b | 516 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 517 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
518 | be used without needing to know whether DWO files are in use or not. |
519 | N.B. This does not apply to DW_AT_ranges appearing in | |
520 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
521 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
18a8505e | 522 | DW_AT_rnglists_base *would* have to be applied, and we'd have to care |
ab435259 | 523 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ |
fcd3b13d | 524 | ULONGEST ranges_base = 0; |
2e3cf129 | 525 | |
41144253 | 526 | /* The DW_AT_loclists_base attribute if present. */ |
527 | ULONGEST loclist_base = 0; | |
528 | ||
c9317f21 TT |
529 | /* When reading debug info generated by older versions of rustc, we |
530 | have to rewrite some union types to be struct types with a | |
531 | variant part. This rewriting must be done after the CU is fully | |
532 | read in, because otherwise at the point of rewriting some struct | |
533 | type might not have been fully processed. So, we keep a list of | |
534 | all such types here and process them after expansion. */ | |
535 | std::vector<struct type *> rust_unions; | |
536 | ||
18a8505e AT |
537 | /* The DW_AT_str_offsets_base attribute if present. For DWARF 4 version DWO |
538 | files, the value is implicitly zero. For DWARF 5 version DWO files, the | |
539 | value is often implicit and is the size of the header of | |
540 | .debug_str_offsets section (8 or 4, depending on the address size). */ | |
541 | gdb::optional<ULONGEST> str_offsets_base; | |
542 | ||
ae038cb0 | 543 | /* Mark used when releasing cached dies. */ |
9068261f | 544 | bool mark : 1; |
ae038cb0 | 545 | |
8be455d7 JK |
546 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
547 | This test is imperfect as there may exist optimized debug code not using | |
548 | any location list and still facing inlining issues if handled as | |
549 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
9068261f | 550 | bool has_loclist : 1; |
ba919b58 | 551 | |
9068261f | 552 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is true |
1b80a9fa JK |
553 | if all the producer_is_* fields are valid. This information is cached |
554 | because profiling CU expansion showed excessive time spent in | |
555 | producer_is_gxx_lt_4_6. */ | |
9068261f AB |
556 | bool checked_producer : 1; |
557 | bool producer_is_gxx_lt_4_6 : 1; | |
558 | bool producer_is_gcc_lt_4_3 : 1; | |
eb77c9df | 559 | bool producer_is_icc : 1; |
9068261f | 560 | bool producer_is_icc_lt_14 : 1; |
c258c396 | 561 | bool producer_is_codewarrior : 1; |
4d4ec4e5 | 562 | |
9068261f | 563 | /* When true, the file that we're processing is known to have |
4d4ec4e5 TT |
564 | debugging info for C++ namespaces. GCC 3.3.x did not produce |
565 | this information, but later versions do. */ | |
566 | ||
9068261f | 567 | bool processing_has_namespace_info : 1; |
d590ff25 YQ |
568 | |
569 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
c24bdb02 KS |
570 | |
571 | /* If this CU was inherited by another CU (via specification, | |
572 | abstract_origin, etc), this is the ancestor CU. */ | |
573 | dwarf2_cu *ancestor; | |
574 | ||
575 | /* Get the buildsym_compunit for this CU. */ | |
576 | buildsym_compunit *get_builder () | |
577 | { | |
578 | /* If this CU has a builder associated with it, use that. */ | |
579 | if (m_builder != nullptr) | |
580 | return m_builder.get (); | |
581 | ||
582 | /* Otherwise, search ancestors for a valid builder. */ | |
583 | if (ancestor != nullptr) | |
584 | return ancestor->get_builder (); | |
585 | ||
586 | return nullptr; | |
587 | } | |
e7c27a73 DJ |
588 | }; |
589 | ||
094b34ac DE |
590 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
591 | This includes type_unit_group and quick_file_names. */ | |
592 | ||
593 | struct stmt_list_hash | |
594 | { | |
595 | /* The DWO unit this table is from or NULL if there is none. */ | |
596 | struct dwo_unit *dwo_unit; | |
597 | ||
598 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 599 | sect_offset line_sect_off; |
094b34ac DE |
600 | }; |
601 | ||
f4dc4d17 DE |
602 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
603 | an object of this type. */ | |
604 | ||
605 | struct type_unit_group | |
606 | { | |
0186c6a7 | 607 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
608 | To simplify things we create an artificial CU that "includes" all the |
609 | type units using this stmt_list so that the rest of the code still has | |
197400e8 | 610 | a "per_cu" handle on the symtab. */ |
094b34ac DE |
611 | struct dwarf2_per_cu_data per_cu; |
612 | ||
0186c6a7 DE |
613 | /* The TUs that share this DW_AT_stmt_list entry. |
614 | This is added to while parsing type units to build partial symtabs, | |
615 | and is deleted afterwards and not used again. */ | |
a8b3b8e9 | 616 | std::vector<signatured_type *> *tus; |
f4dc4d17 | 617 | |
43f3e411 | 618 | /* The compunit symtab. |
094b34ac | 619 | Type units in a group needn't all be defined in the same source file, |
43f3e411 DE |
620 | so we create an essentially anonymous symtab as the compunit symtab. */ |
621 | struct compunit_symtab *compunit_symtab; | |
f4dc4d17 | 622 | |
094b34ac DE |
623 | /* The data used to construct the hash key. */ |
624 | struct stmt_list_hash hash; | |
f4dc4d17 | 625 | |
f4dc4d17 DE |
626 | /* The symbol tables for this TU (obtained from the files listed in |
627 | DW_AT_stmt_list). | |
628 | WARNING: The order of entries here must match the order of entries | |
629 | in the line header. After the first TU using this type_unit_group, the | |
630 | line header for the subsequent TUs is recreated from this. This is done | |
631 | because we need to use the same symtabs for each TU using the same | |
632 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
633 | there's no guarantee the line header doesn't have duplicate entries. */ | |
634 | struct symtab **symtabs; | |
635 | }; | |
636 | ||
73869dc2 | 637 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
638 | |
639 | struct dwo_sections | |
640 | { | |
641 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
642 | struct dwarf2_section_info line; |
643 | struct dwarf2_section_info loc; | |
43988095 | 644 | struct dwarf2_section_info loclists; |
09262596 DE |
645 | struct dwarf2_section_info macinfo; |
646 | struct dwarf2_section_info macro; | |
3019eac3 DE |
647 | struct dwarf2_section_info str; |
648 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
649 | /* In the case of a virtual DWO file, these two are unused. */ |
650 | struct dwarf2_section_info info; | |
fd5866f6 | 651 | std::vector<dwarf2_section_info> types; |
3019eac3 DE |
652 | }; |
653 | ||
c88ee1f0 | 654 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
655 | |
656 | struct dwo_unit | |
657 | { | |
658 | /* Backlink to the containing struct dwo_file. */ | |
659 | struct dwo_file *dwo_file; | |
660 | ||
661 | /* The "id" that distinguishes this CU/TU. | |
662 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
663 | Since signatures came first, we stick with it for consistency. */ | |
664 | ULONGEST signature; | |
665 | ||
666 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 667 | struct dwarf2_section_info *section; |
3019eac3 | 668 | |
9c541725 PA |
669 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
670 | sect_offset sect_off; | |
3019eac3 DE |
671 | unsigned int length; |
672 | ||
673 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
674 | cu_offset type_offset_in_tu; | |
675 | }; | |
676 | ||
73869dc2 DE |
677 | /* include/dwarf2.h defines the DWP section codes. |
678 | It defines a max value but it doesn't define a min value, which we | |
679 | use for error checking, so provide one. */ | |
680 | ||
681 | enum dwp_v2_section_ids | |
682 | { | |
683 | DW_SECT_MIN = 1 | |
684 | }; | |
685 | ||
80626a55 | 686 | /* Data for one DWO file. |
57d63ce2 DE |
687 | |
688 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
689 | appears in a DWP file). DWP files don't really have DWO files per se - | |
690 | comdat folding of types "loses" the DWO file they came from, and from | |
691 | a high level view DWP files appear to contain a mass of random types. | |
692 | However, to maintain consistency with the non-DWP case we pretend DWP | |
693 | files contain virtual DWO files, and we assign each TU with one virtual | |
694 | DWO file (generally based on the line and abbrev section offsets - | |
695 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
696 | |
697 | struct dwo_file | |
698 | { | |
51ac9db5 SM |
699 | dwo_file () = default; |
700 | DISABLE_COPY_AND_ASSIGN (dwo_file); | |
701 | ||
18a8505e | 702 | /* The DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. |
80626a55 DE |
703 | For virtual DWO files the name is constructed from the section offsets |
704 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
705 | from related CU+TUs. */ | |
51ac9db5 | 706 | const char *dwo_name = nullptr; |
0ac5b59e DE |
707 | |
708 | /* The DW_AT_comp_dir attribute. */ | |
51ac9db5 | 709 | const char *comp_dir = nullptr; |
3019eac3 | 710 | |
80626a55 DE |
711 | /* The bfd, when the file is open. Otherwise this is NULL. |
712 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
fb1eb2f9 | 713 | gdb_bfd_ref_ptr dbfd; |
3019eac3 | 714 | |
73869dc2 DE |
715 | /* The sections that make up this DWO file. |
716 | Remember that for virtual DWO files in DWP V2, these are virtual | |
717 | sections (for lack of a better name). */ | |
51ac9db5 | 718 | struct dwo_sections sections {}; |
3019eac3 | 719 | |
33c5cd75 DB |
720 | /* The CUs in the file. |
721 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
722 | an extension to handle LLVM's Link Time Optimization output (where | |
723 | multiple source files may be compiled into a single object/dwo pair). */ | |
b0b6a987 | 724 | htab_up cus; |
3019eac3 DE |
725 | |
726 | /* Table of TUs in the file. | |
727 | Each element is a struct dwo_unit. */ | |
b0b6a987 | 728 | htab_up tus; |
3019eac3 DE |
729 | }; |
730 | ||
80626a55 DE |
731 | /* These sections are what may appear in a DWP file. */ |
732 | ||
733 | struct dwp_sections | |
734 | { | |
73869dc2 | 735 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
736 | struct dwarf2_section_info str; |
737 | struct dwarf2_section_info cu_index; | |
738 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
739 | |
740 | /* These are only used by DWP version 2 files. | |
741 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
742 | sections are referenced by section number, and are not recorded here. | |
743 | In DWP version 2 there is at most one copy of all these sections, each | |
744 | section being (effectively) comprised of the concatenation of all of the | |
745 | individual sections that exist in the version 1 format. | |
746 | To keep the code simple we treat each of these concatenated pieces as a | |
747 | section itself (a virtual section?). */ | |
748 | struct dwarf2_section_info abbrev; | |
749 | struct dwarf2_section_info info; | |
750 | struct dwarf2_section_info line; | |
751 | struct dwarf2_section_info loc; | |
752 | struct dwarf2_section_info macinfo; | |
753 | struct dwarf2_section_info macro; | |
754 | struct dwarf2_section_info str_offsets; | |
755 | struct dwarf2_section_info types; | |
80626a55 DE |
756 | }; |
757 | ||
73869dc2 DE |
758 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
759 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 760 | |
73869dc2 | 761 | struct virtual_v1_dwo_sections |
80626a55 DE |
762 | { |
763 | struct dwarf2_section_info abbrev; | |
764 | struct dwarf2_section_info line; | |
765 | struct dwarf2_section_info loc; | |
766 | struct dwarf2_section_info macinfo; | |
767 | struct dwarf2_section_info macro; | |
768 | struct dwarf2_section_info str_offsets; | |
769 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 770 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
771 | struct dwarf2_section_info info_or_types; |
772 | }; | |
773 | ||
73869dc2 DE |
774 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
775 | In version 2, the sections of the DWO files are concatenated together | |
776 | and stored in one section of that name. Thus each ELF section contains | |
777 | several "virtual" sections. */ | |
778 | ||
779 | struct virtual_v2_dwo_sections | |
780 | { | |
781 | bfd_size_type abbrev_offset; | |
782 | bfd_size_type abbrev_size; | |
783 | ||
784 | bfd_size_type line_offset; | |
785 | bfd_size_type line_size; | |
786 | ||
787 | bfd_size_type loc_offset; | |
788 | bfd_size_type loc_size; | |
789 | ||
790 | bfd_size_type macinfo_offset; | |
791 | bfd_size_type macinfo_size; | |
792 | ||
793 | bfd_size_type macro_offset; | |
794 | bfd_size_type macro_size; | |
795 | ||
796 | bfd_size_type str_offsets_offset; | |
797 | bfd_size_type str_offsets_size; | |
798 | ||
799 | /* Each DWP hash table entry records one CU or one TU. | |
800 | That is recorded here, and copied to dwo_unit.section. */ | |
801 | bfd_size_type info_or_types_offset; | |
802 | bfd_size_type info_or_types_size; | |
803 | }; | |
804 | ||
80626a55 DE |
805 | /* Contents of DWP hash tables. */ |
806 | ||
807 | struct dwp_hash_table | |
808 | { | |
73869dc2 | 809 | uint32_t version, nr_columns; |
80626a55 | 810 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
811 | const gdb_byte *hash_table, *unit_table; |
812 | union | |
813 | { | |
814 | struct | |
815 | { | |
816 | const gdb_byte *indices; | |
817 | } v1; | |
818 | struct | |
819 | { | |
820 | /* This is indexed by column number and gives the id of the section | |
821 | in that column. */ | |
822 | #define MAX_NR_V2_DWO_SECTIONS \ | |
823 | (1 /* .debug_info or .debug_types */ \ | |
824 | + 1 /* .debug_abbrev */ \ | |
825 | + 1 /* .debug_line */ \ | |
826 | + 1 /* .debug_loc */ \ | |
827 | + 1 /* .debug_str_offsets */ \ | |
828 | + 1 /* .debug_macro or .debug_macinfo */) | |
829 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
830 | const gdb_byte *offsets; | |
831 | const gdb_byte *sizes; | |
832 | } v2; | |
833 | } section_pool; | |
80626a55 DE |
834 | }; |
835 | ||
836 | /* Data for one DWP file. */ | |
837 | ||
838 | struct dwp_file | |
839 | { | |
400174b1 TT |
840 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
841 | : name (name_), | |
842 | dbfd (std::move (abfd)) | |
843 | { | |
844 | } | |
845 | ||
80626a55 DE |
846 | /* Name of the file. */ |
847 | const char *name; | |
848 | ||
73869dc2 | 849 | /* File format version. */ |
400174b1 | 850 | int version = 0; |
73869dc2 | 851 | |
93417882 | 852 | /* The bfd. */ |
400174b1 | 853 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
854 | |
855 | /* Section info for this file. */ | |
400174b1 | 856 | struct dwp_sections sections {}; |
80626a55 | 857 | |
57d63ce2 | 858 | /* Table of CUs in the file. */ |
400174b1 | 859 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
860 | |
861 | /* Table of TUs in the file. */ | |
400174b1 | 862 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 863 | |
19ac8c2e | 864 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
48b490f2 TT |
865 | htab_up loaded_cus; |
866 | htab_up loaded_tus; | |
80626a55 | 867 | |
73869dc2 DE |
868 | /* Table to map ELF section numbers to their sections. |
869 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
870 | unsigned int num_sections = 0; |
871 | asection **elf_sections = nullptr; | |
80626a55 DE |
872 | }; |
873 | ||
0963b4bd MS |
874 | /* Struct used to pass misc. parameters to read_die_and_children, et |
875 | al. which are used for both .debug_info and .debug_types dies. | |
876 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 877 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
878 | |
879 | struct die_reader_specs | |
880 | { | |
a32a8923 | 881 | /* The bfd of die_section. */ |
93311388 DE |
882 | bfd* abfd; |
883 | ||
884 | /* The CU of the DIE we are parsing. */ | |
885 | struct dwarf2_cu *cu; | |
886 | ||
80626a55 | 887 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
888 | struct dwo_file *dwo_file; |
889 | ||
dee91e82 | 890 | /* The section the die comes from. |
3019eac3 | 891 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
892 | struct dwarf2_section_info *die_section; |
893 | ||
894 | /* die_section->buffer. */ | |
d521ce57 | 895 | const gdb_byte *buffer; |
f664829e DE |
896 | |
897 | /* The end of the buffer. */ | |
898 | const gdb_byte *buffer_end; | |
a2ce51a0 | 899 | |
685af9cd TT |
900 | /* The abbreviation table to use when reading the DIEs. */ |
901 | struct abbrev_table *abbrev_table; | |
93311388 DE |
902 | }; |
903 | ||
c0ab21c2 TT |
904 | /* A subclass of die_reader_specs that holds storage and has complex |
905 | constructor and destructor behavior. */ | |
906 | ||
907 | class cutu_reader : public die_reader_specs | |
908 | { | |
909 | public: | |
910 | ||
911 | cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
912 | struct abbrev_table *abbrev_table, | |
6751ebae | 913 | int use_existing_cu, |
c0ab21c2 TT |
914 | bool skip_partial); |
915 | ||
916 | explicit cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
917 | struct dwarf2_cu *parent_cu = nullptr, | |
918 | struct dwo_file *dwo_file = nullptr); | |
919 | ||
c0ab21c2 TT |
920 | DISABLE_COPY_AND_ASSIGN (cutu_reader); |
921 | ||
922 | const gdb_byte *info_ptr = nullptr; | |
923 | struct die_info *comp_unit_die = nullptr; | |
c0ab21c2 TT |
924 | bool dummy_p = false; |
925 | ||
6751ebae TT |
926 | /* Release the new CU, putting it on the chain. This cannot be done |
927 | for dummy CUs. */ | |
928 | void keep (); | |
929 | ||
c0ab21c2 TT |
930 | private: |
931 | void init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, | |
6751ebae | 932 | int use_existing_cu); |
c0ab21c2 TT |
933 | |
934 | struct dwarf2_per_cu_data *m_this_cu; | |
c0ab21c2 TT |
935 | std::unique_ptr<dwarf2_cu> m_new_cu; |
936 | ||
937 | /* The ordinary abbreviation table. */ | |
938 | abbrev_table_up m_abbrev_table_holder; | |
939 | ||
940 | /* The DWO abbreviation table. */ | |
941 | abbrev_table_up m_dwo_abbrev_table; | |
942 | }; | |
dee91e82 | 943 | |
c906108c | 944 | /* When we construct a partial symbol table entry we only |
0963b4bd | 945 | need this much information. */ |
6f06d47b | 946 | struct partial_die_info : public allocate_on_obstack |
c906108c | 947 | { |
6f06d47b YQ |
948 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
949 | ||
950 | /* Disable assign but still keep copy ctor, which is needed | |
951 | load_partial_dies. */ | |
952 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
953 | ||
52356b79 YQ |
954 | /* Adjust the partial die before generating a symbol for it. This |
955 | function may set the is_external flag or change the DIE's | |
956 | name. */ | |
957 | void fixup (struct dwarf2_cu *cu); | |
958 | ||
48fbe735 YQ |
959 | /* Read a minimal amount of information into the minimal die |
960 | structure. */ | |
961 | const gdb_byte *read (const struct die_reader_specs *reader, | |
962 | const struct abbrev_info &abbrev, | |
963 | const gdb_byte *info_ptr); | |
964 | ||
72bf9492 | 965 | /* Offset of this DIE. */ |
6f06d47b | 966 | const sect_offset sect_off; |
72bf9492 DJ |
967 | |
968 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 969 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 970 | |
72bf9492 | 971 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
972 | const unsigned int has_children : 1; |
973 | ||
72bf9492 DJ |
974 | unsigned int is_external : 1; |
975 | unsigned int is_declaration : 1; | |
976 | unsigned int has_type : 1; | |
977 | unsigned int has_specification : 1; | |
978 | unsigned int has_pc_info : 1; | |
481860b3 | 979 | unsigned int may_be_inlined : 1; |
72bf9492 | 980 | |
0c1b455e TT |
981 | /* This DIE has been marked DW_AT_main_subprogram. */ |
982 | unsigned int main_subprogram : 1; | |
983 | ||
72bf9492 DJ |
984 | /* Flag set if the SCOPE field of this structure has been |
985 | computed. */ | |
986 | unsigned int scope_set : 1; | |
987 | ||
fa4028e9 JB |
988 | /* Flag set if the DIE has a byte_size attribute. */ |
989 | unsigned int has_byte_size : 1; | |
990 | ||
ff908ebf AW |
991 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
992 | unsigned int has_const_value : 1; | |
993 | ||
98bfdba5 PA |
994 | /* Flag set if any of the DIE's children are template arguments. */ |
995 | unsigned int has_template_arguments : 1; | |
996 | ||
52356b79 | 997 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
998 | unsigned int fixup_called : 1; |
999 | ||
36586728 TT |
1000 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1001 | unsigned int is_dwz : 1; | |
1002 | ||
1003 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1004 | unsigned int spec_is_dwz : 1; | |
1005 | ||
72bf9492 | 1006 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1007 | sometimes a default name for unnamed DIEs. */ |
6f06d47b | 1008 | const char *name = nullptr; |
72bf9492 | 1009 | |
abc72ce4 | 1010 | /* The linkage name, if present. */ |
6f06d47b | 1011 | const char *linkage_name = nullptr; |
abc72ce4 | 1012 | |
72bf9492 DJ |
1013 | /* The scope to prepend to our children. This is generally |
1014 | allocated on the comp_unit_obstack, so will disappear | |
1015 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1016 | const char *scope = nullptr; |
72bf9492 | 1017 | |
95554aad TT |
1018 | /* Some data associated with the partial DIE. The tag determines |
1019 | which field is live. */ | |
1020 | union | |
1021 | { | |
1022 | /* The location description associated with this DIE, if any. */ | |
1023 | struct dwarf_block *locdesc; | |
1024 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1025 | sect_offset sect_off; |
6f06d47b | 1026 | } d {}; |
72bf9492 DJ |
1027 | |
1028 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1029 | CORE_ADDR lowpc = 0; |
1030 | CORE_ADDR highpc = 0; | |
72bf9492 | 1031 | |
93311388 | 1032 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1033 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1034 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1035 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1036 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1037 | |
1038 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1039 | DW_AT_specification (or DW_AT_abstract_origin or | |
1040 | DW_AT_extension). */ | |
6f06d47b | 1041 | sect_offset spec_offset {}; |
72bf9492 DJ |
1042 | |
1043 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1044 | if any. */ | |
6f06d47b YQ |
1045 | struct partial_die_info *die_parent = nullptr; |
1046 | struct partial_die_info *die_child = nullptr; | |
1047 | struct partial_die_info *die_sibling = nullptr; | |
1048 | ||
1049 | friend struct partial_die_info * | |
1050 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1051 | ||
1052 | private: | |
1053 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1054 | partial_die_info (sect_offset sect_off) | |
1055 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1056 | { | |
1057 | } | |
1058 | ||
1059 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1060 | int has_children_) | |
1061 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1062 | { | |
1063 | is_external = 0; | |
1064 | is_declaration = 0; | |
1065 | has_type = 0; | |
1066 | has_specification = 0; | |
1067 | has_pc_info = 0; | |
1068 | may_be_inlined = 0; | |
1069 | main_subprogram = 0; | |
1070 | scope_set = 0; | |
1071 | has_byte_size = 0; | |
1072 | has_const_value = 0; | |
1073 | has_template_arguments = 0; | |
1074 | fixup_called = 0; | |
1075 | is_dwz = 0; | |
1076 | spec_is_dwz = 0; | |
1077 | } | |
c906108c SS |
1078 | }; |
1079 | ||
c906108c SS |
1080 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1081 | but this would require a corresponding change in unpack_field_as_long | |
1082 | and friends. */ | |
1083 | static int bits_per_byte = 8; | |
1084 | ||
9c6a1327 TT |
1085 | struct variant_part_builder; |
1086 | ||
1087 | /* When reading a variant, we track a bit more information about the | |
1088 | field, and store it in an object of this type. */ | |
2ddeaf8a TT |
1089 | |
1090 | struct variant_field | |
1091 | { | |
9c6a1327 TT |
1092 | int first_field = -1; |
1093 | int last_field = -1; | |
1094 | ||
1095 | /* A variant can contain other variant parts. */ | |
1096 | std::vector<variant_part_builder> variant_parts; | |
1097 | ||
2ddeaf8a TT |
1098 | /* If we see a DW_TAG_variant, then this will be set if this is the |
1099 | default branch. */ | |
9c6a1327 TT |
1100 | bool default_branch = false; |
1101 | /* If we see a DW_AT_discr_value, then this will be the discriminant | |
1102 | value. */ | |
1103 | ULONGEST discriminant_value = 0; | |
1104 | /* If we see a DW_AT_discr_list, then this is a pointer to the list | |
1105 | data. */ | |
1106 | struct dwarf_block *discr_list_data = nullptr; | |
1107 | }; | |
1108 | ||
1109 | /* This represents a DW_TAG_variant_part. */ | |
1110 | ||
1111 | struct variant_part_builder | |
1112 | { | |
1113 | /* The offset of the discriminant field. */ | |
1114 | sect_offset discriminant_offset {}; | |
1115 | ||
1116 | /* Variants that are direct children of this variant part. */ | |
1117 | std::vector<variant_field> variants; | |
1118 | ||
1119 | /* True if we're currently reading a variant. */ | |
1120 | bool processing_variant = false; | |
2ddeaf8a TT |
1121 | }; |
1122 | ||
52059ffd TT |
1123 | struct nextfield |
1124 | { | |
be2daae6 TT |
1125 | int accessibility = 0; |
1126 | int virtuality = 0; | |
9c6a1327 TT |
1127 | /* Variant parts need to find the discriminant, which is a DIE |
1128 | reference. We track the section offset of each field to make | |
1129 | this link. */ | |
1130 | sect_offset offset; | |
be2daae6 | 1131 | struct field field {}; |
52059ffd TT |
1132 | }; |
1133 | ||
1134 | struct fnfieldlist | |
1135 | { | |
be2daae6 TT |
1136 | const char *name = nullptr; |
1137 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1138 | }; |
1139 | ||
c906108c SS |
1140 | /* The routines that read and process dies for a C struct or C++ class |
1141 | pass lists of data member fields and lists of member function fields | |
1142 | in an instance of a field_info structure, as defined below. */ | |
1143 | struct field_info | |
c5aa993b | 1144 | { |
0963b4bd | 1145 | /* List of data member and baseclasses fields. */ |
be2daae6 TT |
1146 | std::vector<struct nextfield> fields; |
1147 | std::vector<struct nextfield> baseclasses; | |
c906108c | 1148 | |
85102364 | 1149 | /* Set if the accessibility of one of the fields is not public. */ |
be2daae6 | 1150 | int non_public_fields = 0; |
c906108c | 1151 | |
c5aa993b JM |
1152 | /* Member function fieldlist array, contains name of possibly overloaded |
1153 | member function, number of overloaded member functions and a pointer | |
1154 | to the head of the member function field chain. */ | |
be2daae6 | 1155 | std::vector<struct fnfieldlist> fnfieldlists; |
98751a41 JK |
1156 | |
1157 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1158 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
be2daae6 | 1159 | std::vector<struct decl_field> typedef_field_list; |
883fd55a KS |
1160 | |
1161 | /* Nested types defined by this class and the number of elements in this | |
1162 | list. */ | |
be2daae6 | 1163 | std::vector<struct decl_field> nested_types_list; |
317f7127 | 1164 | |
9c6a1327 TT |
1165 | /* If non-null, this is the variant part we are currently |
1166 | reading. */ | |
1167 | variant_part_builder *current_variant_part = nullptr; | |
1168 | /* This holds all the top-level variant parts attached to the type | |
1169 | we're reading. */ | |
1170 | std::vector<variant_part_builder> variant_parts; | |
1171 | ||
317f7127 TT |
1172 | /* Return the total number of fields (including baseclasses). */ |
1173 | int nfields () const | |
1174 | { | |
1175 | return fields.size () + baseclasses.size (); | |
1176 | } | |
c5aa993b | 1177 | }; |
c906108c | 1178 | |
ae038cb0 DJ |
1179 | /* Loaded secondary compilation units are kept in memory until they |
1180 | have not been referenced for the processing of this many | |
1181 | compilation units. Set this to zero to disable caching. Cache | |
1182 | sizes of up to at least twenty will improve startup time for | |
1183 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1184 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1185 | static void |
b4f54984 DE |
1186 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1187 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1188 | { |
3e43a32a | 1189 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1190 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1191 | value); |
1192 | } | |
4390d890 | 1193 | \f |
c906108c SS |
1194 | /* local function prototypes */ |
1195 | ||
918dd910 JK |
1196 | static void dwarf2_find_base_address (struct die_info *die, |
1197 | struct dwarf2_cu *cu); | |
1198 | ||
891813be | 1199 | static dwarf2_psymtab *create_partial_symtab |
0018ea6f DE |
1200 | (struct dwarf2_per_cu_data *per_cu, const char *name); |
1201 | ||
f1902523 JK |
1202 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1203 | const gdb_byte *info_ptr, | |
3e225074 | 1204 | struct die_info *type_unit_die); |
f1902523 | 1205 | |
ed2dc618 SM |
1206 | static void dwarf2_build_psymtabs_hard |
1207 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
c906108c | 1208 | |
72bf9492 DJ |
1209 | static void scan_partial_symbols (struct partial_die_info *, |
1210 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1211 | int, struct dwarf2_cu *); |
c906108c | 1212 | |
72bf9492 DJ |
1213 | static void add_partial_symbol (struct partial_die_info *, |
1214 | struct dwarf2_cu *); | |
63d06c5c | 1215 | |
72bf9492 DJ |
1216 | static void add_partial_namespace (struct partial_die_info *pdi, |
1217 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1218 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1219 | |
5d7cb8df | 1220 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1221 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1222 | struct dwarf2_cu *cu); |
1223 | ||
72bf9492 DJ |
1224 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1225 | struct dwarf2_cu *cu); | |
91c24f0a | 1226 | |
bc30ff58 JB |
1227 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1228 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1229 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1230 | |
d521ce57 | 1231 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1232 | |
dee91e82 | 1233 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1234 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1235 | |
fb816e8b TV |
1236 | /* A pair of partial_die_info and compilation unit. */ |
1237 | struct cu_partial_die_info | |
1238 | { | |
1239 | /* The compilation unit of the partial_die_info. */ | |
1240 | struct dwarf2_cu *cu; | |
1241 | /* A partial_die_info. */ | |
1242 | struct partial_die_info *pdi; | |
122cf0f2 AB |
1243 | |
1244 | cu_partial_die_info (struct dwarf2_cu *cu, struct partial_die_info *pdi) | |
1245 | : cu (cu), | |
1246 | pdi (pdi) | |
405feb71 | 1247 | { /* Nothing. */ } |
122cf0f2 AB |
1248 | |
1249 | private: | |
1250 | cu_partial_die_info () = delete; | |
fb816e8b TV |
1251 | }; |
1252 | ||
122cf0f2 AB |
1253 | static const struct cu_partial_die_info find_partial_die (sect_offset, int, |
1254 | struct dwarf2_cu *); | |
72bf9492 | 1255 | |
d521ce57 TT |
1256 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1257 | struct attribute *, struct attr_abbrev *, | |
18a8505e AT |
1258 | const gdb_byte *, bool *need_reprocess); |
1259 | ||
1260 | static void read_attribute_reprocess (const struct die_reader_specs *reader, | |
1261 | struct attribute *attr); | |
1262 | ||
1263 | static CORE_ADDR read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index); | |
a8329558 | 1264 | |
ed2dc618 SM |
1265 | static sect_offset read_abbrev_offset |
1266 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
1267 | struct dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1268 | |
ed2dc618 SM |
1269 | static const char *read_indirect_string |
1270 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1271 | const struct comp_unit_head *, unsigned int *); | |
4bdf3d34 | 1272 | |
ed2dc618 | 1273 | static const char *read_indirect_string_at_offset |
4f44ae6c | 1274 | (struct dwarf2_per_objfile *dwarf2_per_objfile, LONGEST str_offset); |
927aa2e7 | 1275 | |
d521ce57 TT |
1276 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1277 | const gdb_byte *, | |
3019eac3 DE |
1278 | unsigned int *); |
1279 | ||
18a8505e AT |
1280 | static const char *read_dwo_str_index (const struct die_reader_specs *reader, |
1281 | ULONGEST str_index); | |
1282 | ||
1283 | static const char *read_stub_str_index (struct dwarf2_cu *cu, | |
1284 | ULONGEST str_index); | |
3019eac3 | 1285 | |
e142c38c | 1286 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1287 | |
e142c38c DJ |
1288 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1289 | struct dwarf2_cu *); | |
c906108c | 1290 | |
7d45c7c3 KB |
1291 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1292 | struct dwarf2_cu *cu); | |
1293 | ||
a084a2a6 AT |
1294 | static const char *dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu); |
1295 | ||
05cf31d1 JB |
1296 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1297 | struct dwarf2_cu *cu); | |
1298 | ||
e142c38c | 1299 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1300 | |
e142c38c | 1301 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1302 | struct dwarf2_cu **); |
63d06c5c | 1303 | |
9c541725 | 1304 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1305 | struct dwarf2_cu *cu); |
debd256d | 1306 | |
f3f5162e | 1307 | static void dwarf_decode_lines (struct line_header *, const char *, |
891813be | 1308 | struct dwarf2_cu *, dwarf2_psymtab *, |
527f3840 | 1309 | CORE_ADDR, int decode_mapping); |
c906108c | 1310 | |
804d2729 TT |
1311 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1312 | const char *); | |
c906108c | 1313 | |
a14ed312 | 1314 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1315 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1316 | |
ff39bb5e | 1317 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1318 | struct dwarf2_cu *); |
c906108c | 1319 | |
ff39bb5e | 1320 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1321 | struct type *type, |
1322 | const char *name, | |
1323 | struct obstack *obstack, | |
12df843f | 1324 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1325 | const gdb_byte **bytes, |
98bfdba5 | 1326 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1327 | |
e7c27a73 | 1328 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1329 | |
b4ba55a1 JB |
1330 | static int need_gnat_info (struct dwarf2_cu *); |
1331 | ||
3e43a32a MS |
1332 | static struct type *die_descriptive_type (struct die_info *, |
1333 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1334 | |
1335 | static void set_descriptive_type (struct type *, struct die_info *, | |
1336 | struct dwarf2_cu *); | |
1337 | ||
e7c27a73 DJ |
1338 | static struct type *die_containing_type (struct die_info *, |
1339 | struct dwarf2_cu *); | |
c906108c | 1340 | |
ff39bb5e | 1341 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1342 | struct dwarf2_cu *); |
c906108c | 1343 | |
f792889a | 1344 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1345 | |
673bfd45 DE |
1346 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1347 | ||
0d5cff50 | 1348 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1349 | |
6e70227d | 1350 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1351 | const char *suffix, int physname, |
1352 | struct dwarf2_cu *cu); | |
63d06c5c | 1353 | |
e7c27a73 | 1354 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1355 | |
348e048f DE |
1356 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1357 | ||
e7c27a73 | 1358 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1359 | |
e7c27a73 | 1360 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1361 | |
96408a79 SA |
1362 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1363 | ||
71a3c369 TT |
1364 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1365 | ||
ff013f42 | 1366 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
891813be | 1367 | struct dwarf2_cu *, dwarf2_psymtab *); |
ff013f42 | 1368 | |
41144253 | 1369 | /* Return the .debug_loclists section to use for cu. */ |
1370 | static struct dwarf2_section_info *cu_debug_loc_section (struct dwarf2_cu *cu); | |
1371 | ||
3a2b436a | 1372 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1373 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1374 | enum pc_bounds_kind |
1375 | { | |
e385593e | 1376 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1377 | PC_BOUNDS_NOT_PRESENT, |
1378 | ||
e385593e JK |
1379 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1380 | were present but they do not form a valid range of PC addresses. */ | |
1381 | PC_BOUNDS_INVALID, | |
1382 | ||
3a2b436a JK |
1383 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1384 | PC_BOUNDS_RANGES, | |
1385 | ||
1386 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1387 | PC_BOUNDS_HIGH_LOW, | |
1388 | }; | |
1389 | ||
1390 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1391 | CORE_ADDR *, CORE_ADDR *, | |
1392 | struct dwarf2_cu *, | |
891813be | 1393 | dwarf2_psymtab *); |
c906108c | 1394 | |
fae299cd DC |
1395 | static void get_scope_pc_bounds (struct die_info *, |
1396 | CORE_ADDR *, CORE_ADDR *, | |
1397 | struct dwarf2_cu *); | |
1398 | ||
801e3a5b JB |
1399 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1400 | CORE_ADDR, struct dwarf2_cu *); | |
1401 | ||
a14ed312 | 1402 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1403 | struct dwarf2_cu *); |
c906108c | 1404 | |
a14ed312 | 1405 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1406 | struct type *, struct dwarf2_cu *); |
c906108c | 1407 | |
a14ed312 | 1408 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1409 | struct die_info *, struct type *, |
e7c27a73 | 1410 | struct dwarf2_cu *); |
c906108c | 1411 | |
a14ed312 | 1412 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1413 | struct type *, |
1414 | struct dwarf2_cu *); | |
c906108c | 1415 | |
134d01f1 | 1416 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1417 | |
e7c27a73 | 1418 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1419 | |
e7c27a73 | 1420 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1421 | |
5d7cb8df JK |
1422 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1423 | ||
804d2729 | 1424 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1425 | |
27aa8d6a SW |
1426 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1427 | ||
74921315 KS |
1428 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1429 | ||
f55ee35c JK |
1430 | static struct type *read_module_type (struct die_info *die, |
1431 | struct dwarf2_cu *cu); | |
1432 | ||
38d518c9 | 1433 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1434 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1435 | |
134d01f1 | 1436 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1437 | |
7d79de9a TT |
1438 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *, |
1439 | bool * = nullptr); | |
c906108c | 1440 | |
6e70227d | 1441 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1442 | struct dwarf2_cu *); |
1443 | ||
bf6af496 | 1444 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1445 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1446 | struct die_info *); |
639d11d3 | 1447 | |
dee91e82 | 1448 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1449 | const gdb_byte *info_ptr, |
1450 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1451 | struct die_info *parent); |
1452 | ||
d521ce57 TT |
1453 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1454 | struct die_info **, const gdb_byte *, | |
3e225074 | 1455 | int); |
3019eac3 | 1456 | |
d521ce57 | 1457 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
3e225074 | 1458 | struct die_info **, const gdb_byte *); |
93311388 | 1459 | |
e7c27a73 | 1460 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1461 | |
15d034d0 | 1462 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
be1e3d3e | 1463 | struct objfile *); |
71c25dea | 1464 | |
15d034d0 | 1465 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1466 | |
15d034d0 | 1467 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1468 | struct die_info *die, |
1469 | struct dwarf2_cu *cu); | |
1470 | ||
ca69b9e6 DE |
1471 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1472 | struct dwarf2_cu *cu); | |
1473 | ||
e142c38c | 1474 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1475 | struct dwarf2_cu **); |
9219021c | 1476 | |
d97bc12b DE |
1477 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1478 | ||
1479 | static void dump_die_for_error (struct die_info *); | |
1480 | ||
1481 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1482 | struct die_info *); | |
c906108c | 1483 | |
d97bc12b | 1484 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1485 | |
51545339 | 1486 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1487 | struct dwarf2_cu *); |
c906108c | 1488 | |
348e048f | 1489 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1490 | const struct attribute *, |
348e048f DE |
1491 | struct dwarf2_cu **); |
1492 | ||
10b3939b | 1493 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1494 | const struct attribute *, |
f2f0e013 | 1495 | struct dwarf2_cu **); |
c906108c | 1496 | |
348e048f | 1497 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1498 | const struct attribute *, |
348e048f DE |
1499 | struct dwarf2_cu **); |
1500 | ||
ac9ec31b DE |
1501 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1502 | struct dwarf2_cu *); | |
1503 | ||
1504 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1505 | const struct attribute *, |
ac9ec31b DE |
1506 | struct dwarf2_cu *); |
1507 | ||
e5fe5e75 | 1508 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1509 | |
52dc124a | 1510 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1511 | |
63e43d3a PMR |
1512 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1513 | struct die_info *die, struct dwarf2_cu *cu, | |
9a49df9d | 1514 | struct dynamic_prop *prop, struct type *type); |
63e43d3a | 1515 | |
c906108c SS |
1516 | /* memory allocation interface */ |
1517 | ||
7b5a2f43 | 1518 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1519 | |
b60c80d6 | 1520 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1521 | |
43f3e411 | 1522 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1523 | |
8cf6f0b1 TT |
1524 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1525 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1526 | const struct attribute *attr); |
8cf6f0b1 | 1527 | |
ff39bb5e | 1528 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1529 | struct symbol *sym, |
f1e6e072 TT |
1530 | struct dwarf2_cu *cu, |
1531 | int is_block); | |
4c2df51b | 1532 | |
d521ce57 TT |
1533 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1534 | const gdb_byte *info_ptr, | |
1535 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1536 | |
72bf9492 DJ |
1537 | static hashval_t partial_die_hash (const void *item); |
1538 | ||
1539 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1540 | ||
ae038cb0 | 1541 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 SM |
1542 | (sect_offset sect_off, unsigned int offset_in_dwz, |
1543 | struct dwarf2_per_objfile *dwarf2_per_objfile); | |
ae038cb0 | 1544 | |
9816fde3 | 1545 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1546 | struct die_info *comp_unit_die, |
1547 | enum language pretend_language); | |
93311388 | 1548 | |
ed2dc618 | 1549 | static void age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1550 | |
dee91e82 | 1551 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1552 | |
f792889a DJ |
1553 | static struct type *set_die_type (struct die_info *, struct type *, |
1554 | struct dwarf2_cu *); | |
1c379e20 | 1555 | |
ed2dc618 | 1556 | static void create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1557 | |
ed2dc618 | 1558 | static int create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
1fd400ff | 1559 | |
58f0c718 | 1560 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, bool, |
95554aad | 1561 | enum language); |
10b3939b | 1562 | |
95554aad TT |
1563 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1564 | enum language); | |
10b3939b | 1565 | |
f4dc4d17 DE |
1566 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1567 | enum language); | |
1568 | ||
10b3939b DJ |
1569 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1570 | struct dwarf2_per_cu_data *); | |
1571 | ||
ae038cb0 DJ |
1572 | static void dwarf2_mark (struct dwarf2_cu *); |
1573 | ||
1574 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1575 | ||
b64f50a1 | 1576 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1577 | struct dwarf2_per_cu_data *); |
673bfd45 | 1578 | |
f792889a | 1579 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1580 | |
95554aad TT |
1581 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1582 | enum language pretend_language); | |
1583 | ||
ed2dc618 | 1584 | static void process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile); |
9291a0cd | 1585 | |
b303c6f6 AB |
1586 | /* Class, the destructor of which frees all allocated queue entries. This |
1587 | will only have work to do if an error was thrown while processing the | |
1588 | dwarf. If no error was thrown then the queue entries should have all | |
1589 | been processed, and freed, as we went along. */ | |
1590 | ||
1591 | class dwarf2_queue_guard | |
1592 | { | |
1593 | public: | |
39856def TT |
1594 | explicit dwarf2_queue_guard (dwarf2_per_objfile *per_objfile) |
1595 | : m_per_objfile (per_objfile) | |
1596 | { | |
1597 | } | |
b303c6f6 AB |
1598 | |
1599 | /* Free any entries remaining on the queue. There should only be | |
1600 | entries left if we hit an error while processing the dwarf. */ | |
1601 | ~dwarf2_queue_guard () | |
1602 | { | |
39856def TT |
1603 | /* Ensure that no memory is allocated by the queue. */ |
1604 | std::queue<dwarf2_queue_item> empty; | |
1605 | std::swap (m_per_objfile->queue, empty); | |
1606 | } | |
b303c6f6 | 1607 | |
39856def | 1608 | DISABLE_COPY_AND_ASSIGN (dwarf2_queue_guard); |
b303c6f6 | 1609 | |
39856def TT |
1610 | private: |
1611 | dwarf2_per_objfile *m_per_objfile; | |
b303c6f6 AB |
1612 | }; |
1613 | ||
39856def TT |
1614 | dwarf2_queue_item::~dwarf2_queue_item () |
1615 | { | |
1616 | /* Anything still marked queued is likely to be in an | |
1617 | inconsistent state, so discard it. */ | |
1618 | if (per_cu->queued) | |
1619 | { | |
1620 | if (per_cu->cu != NULL) | |
1621 | free_one_cached_comp_unit (per_cu); | |
1622 | per_cu->queued = 0; | |
1623 | } | |
1624 | } | |
1625 | ||
d721ba37 PA |
1626 | /* The return type of find_file_and_directory. Note, the enclosed |
1627 | string pointers are only valid while this object is valid. */ | |
1628 | ||
1629 | struct file_and_directory | |
1630 | { | |
1631 | /* The filename. This is never NULL. */ | |
1632 | const char *name; | |
1633 | ||
1634 | /* The compilation directory. NULL if not known. If we needed to | |
1635 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1636 | points directly to the DW_AT_comp_dir string attribute owned by | |
1637 | the obstack that owns the DIE. */ | |
1638 | const char *comp_dir; | |
1639 | ||
1640 | /* If we needed to build a new string for comp_dir, this is what | |
1641 | owns the storage. */ | |
1642 | std::string comp_dir_storage; | |
1643 | }; | |
1644 | ||
1645 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1646 | struct dwarf2_cu *cu); | |
9291a0cd | 1647 | |
298e9637 | 1648 | static htab_up allocate_signatured_type_table (); |
1fd400ff | 1649 | |
298e9637 | 1650 | static htab_up allocate_dwo_unit_table (); |
3019eac3 | 1651 | |
57d63ce2 | 1652 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
ed2dc618 SM |
1653 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
1654 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 1655 | ULONGEST signature, int is_debug_types); |
a2ce51a0 | 1656 | |
ed2dc618 SM |
1657 | static struct dwp_file *get_dwp_file |
1658 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
a2ce51a0 | 1659 | |
3019eac3 | 1660 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 1661 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
1662 | |
1663 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 1664 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 1665 | |
89e63ee4 DE |
1666 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
1667 | ||
263db9a1 TT |
1668 | /* A unique pointer to a dwo_file. */ |
1669 | ||
51ac9db5 | 1670 | typedef std::unique_ptr<struct dwo_file> dwo_file_up; |
263db9a1 | 1671 | |
ed2dc618 | 1672 | static void process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile); |
95554aad | 1673 | |
1b80a9fa | 1674 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1675 | |
1676 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1677 | \f |
1678 | /* Various complaints about symbol reading that don't abort the process. */ | |
1679 | ||
4390d890 DE |
1680 | static void |
1681 | dwarf2_debug_line_missing_file_complaint (void) | |
1682 | { | |
b98664d3 | 1683 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
1684 | } |
1685 | ||
1686 | static void | |
1687 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1688 | { | |
b98664d3 | 1689 | complaint (_(".debug_line section has line " |
4390d890 DE |
1690 | "program sequence without an end")); |
1691 | } | |
1692 | ||
1693 | static void | |
1694 | dwarf2_complex_location_expr_complaint (void) | |
1695 | { | |
b98664d3 | 1696 | complaint (_("location expression too complex")); |
4390d890 DE |
1697 | } |
1698 | ||
1699 | static void | |
1700 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1701 | int arg3) | |
1702 | { | |
b98664d3 | 1703 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
1704 | arg1, arg2, arg3); |
1705 | } | |
1706 | ||
4390d890 DE |
1707 | static void |
1708 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1709 | { | |
b98664d3 | 1710 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
1711 | arg1, arg2); |
1712 | } | |
527f3840 JK |
1713 | |
1714 | /* Hash function for line_header_hash. */ | |
1715 | ||
1716 | static hashval_t | |
1717 | line_header_hash (const struct line_header *ofs) | |
1718 | { | |
9c541725 | 1719 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
1720 | } |
1721 | ||
1722 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
1723 | ||
1724 | static hashval_t | |
1725 | line_header_hash_voidp (const void *item) | |
1726 | { | |
9a3c8263 | 1727 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
1728 | |
1729 | return line_header_hash (ofs); | |
1730 | } | |
1731 | ||
1732 | /* Equality function for line_header_hash. */ | |
1733 | ||
1734 | static int | |
1735 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
1736 | { | |
9a3c8263 SM |
1737 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
1738 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 1739 | |
9c541725 | 1740 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
1741 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
1742 | } | |
1743 | ||
4390d890 | 1744 | \f |
9291a0cd | 1745 | |
330cdd98 PA |
1746 | /* See declaration. */ |
1747 | ||
1748 | dwarf2_per_objfile::dwarf2_per_objfile (struct objfile *objfile_, | |
4b610737 TT |
1749 | const dwarf2_debug_sections *names, |
1750 | bool can_copy_) | |
1751 | : objfile (objfile_), | |
1752 | can_copy (can_copy_) | |
330cdd98 PA |
1753 | { |
1754 | if (names == NULL) | |
1755 | names = &dwarf2_elf_names; | |
1756 | ||
1757 | bfd *obfd = objfile->obfd; | |
1758 | ||
1759 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) | |
1760 | locate_sections (obfd, sec, *names); | |
1761 | } | |
1762 | ||
1763 | dwarf2_per_objfile::~dwarf2_per_objfile () | |
1764 | { | |
1765 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
1766 | free_cached_comp_units (); | |
1767 | ||
b76e467d | 1768 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
ae640021 | 1769 | per_cu->imported_symtabs_free (); |
fc8e7e75 | 1770 | |
b2bdb8cf | 1771 | for (signatured_type *sig_type : all_type_units) |
ae640021 | 1772 | sig_type->per_cu.imported_symtabs_free (); |
fc8e7e75 | 1773 | |
330cdd98 PA |
1774 | /* Everything else should be on the objfile obstack. */ |
1775 | } | |
1776 | ||
1777 | /* See declaration. */ | |
1778 | ||
1779 | void | |
1780 | dwarf2_per_objfile::free_cached_comp_units () | |
1781 | { | |
1782 | dwarf2_per_cu_data *per_cu = read_in_chain; | |
1783 | dwarf2_per_cu_data **last_chain = &read_in_chain; | |
1784 | while (per_cu != NULL) | |
1785 | { | |
1786 | dwarf2_per_cu_data *next_cu = per_cu->cu->read_in_chain; | |
1787 | ||
fcd3b13d | 1788 | delete per_cu->cu; |
330cdd98 PA |
1789 | *last_chain = next_cu; |
1790 | per_cu = next_cu; | |
1791 | } | |
1792 | } | |
1793 | ||
11ed8cad TT |
1794 | /* A helper class that calls free_cached_comp_units on |
1795 | destruction. */ | |
1796 | ||
1797 | class free_cached_comp_units | |
1798 | { | |
1799 | public: | |
1800 | ||
1801 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
1802 | : m_per_objfile (per_objfile) | |
1803 | { | |
1804 | } | |
1805 | ||
1806 | ~free_cached_comp_units () | |
1807 | { | |
1808 | m_per_objfile->free_cached_comp_units (); | |
1809 | } | |
1810 | ||
1811 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
1812 | ||
1813 | private: | |
1814 | ||
1815 | dwarf2_per_objfile *m_per_objfile; | |
1816 | }; | |
1817 | ||
c906108c | 1818 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1819 | information and return true if we have enough to do something. |
1820 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
4b610737 TT |
1821 | ELF names are used. CAN_COPY is true for formats where symbol |
1822 | interposition is possible and so symbol values must follow copy | |
1823 | relocation rules. */ | |
c906108c SS |
1824 | |
1825 | int | |
251d32d9 | 1826 | dwarf2_has_info (struct objfile *objfile, |
4b610737 TT |
1827 | const struct dwarf2_debug_sections *names, |
1828 | bool can_copy) | |
c906108c | 1829 | { |
97cbe998 SDJ |
1830 | if (objfile->flags & OBJF_READNEVER) |
1831 | return 0; | |
1832 | ||
ed2dc618 SM |
1833 | struct dwarf2_per_objfile *dwarf2_per_objfile |
1834 | = get_dwarf2_per_objfile (objfile); | |
1835 | ||
1836 | if (dwarf2_per_objfile == NULL) | |
5bfd760d | 1837 | dwarf2_per_objfile = dwarf2_objfile_data_key.emplace (objfile, objfile, |
4b610737 TT |
1838 | names, |
1839 | can_copy); | |
5bfd760d | 1840 | |
73869dc2 | 1841 | return (!dwarf2_per_objfile->info.is_virtual |
049412e3 | 1842 | && dwarf2_per_objfile->info.s.section != NULL |
73869dc2 | 1843 | && !dwarf2_per_objfile->abbrev.is_virtual |
049412e3 | 1844 | && dwarf2_per_objfile->abbrev.s.section != NULL); |
73869dc2 DE |
1845 | } |
1846 | ||
251d32d9 TG |
1847 | /* When loading sections, we look either for uncompressed section or for |
1848 | compressed section names. */ | |
233a11ab CS |
1849 | |
1850 | static int | |
251d32d9 TG |
1851 | section_is_p (const char *section_name, |
1852 | const struct dwarf2_section_names *names) | |
233a11ab | 1853 | { |
251d32d9 TG |
1854 | if (names->normal != NULL |
1855 | && strcmp (section_name, names->normal) == 0) | |
1856 | return 1; | |
1857 | if (names->compressed != NULL | |
1858 | && strcmp (section_name, names->compressed) == 0) | |
1859 | return 1; | |
1860 | return 0; | |
233a11ab CS |
1861 | } |
1862 | ||
330cdd98 | 1863 | /* See declaration. */ |
c906108c | 1864 | |
330cdd98 PA |
1865 | void |
1866 | dwarf2_per_objfile::locate_sections (bfd *abfd, asection *sectp, | |
1867 | const dwarf2_debug_sections &names) | |
c906108c | 1868 | { |
fd361982 | 1869 | flagword aflag = bfd_section_flags (sectp); |
251d32d9 | 1870 | |
dc7650b8 JK |
1871 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
1872 | { | |
1873 | } | |
950b7495 KS |
1874 | else if (elf_section_data (sectp)->this_hdr.sh_size |
1875 | > bfd_get_file_size (abfd)) | |
1876 | { | |
1877 | bfd_size_type size = elf_section_data (sectp)->this_hdr.sh_size; | |
1878 | warning (_("Discarding section %s which has a section size (%s" | |
1879 | ") larger than the file size [in module %s]"), | |
1880 | bfd_section_name (sectp), phex_nz (size, sizeof (size)), | |
1881 | bfd_get_filename (abfd)); | |
1882 | } | |
330cdd98 | 1883 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 1884 | { |
330cdd98 | 1885 | this->info.s.section = sectp; |
fd361982 | 1886 | this->info.size = bfd_section_size (sectp); |
c906108c | 1887 | } |
330cdd98 | 1888 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 1889 | { |
330cdd98 | 1890 | this->abbrev.s.section = sectp; |
fd361982 | 1891 | this->abbrev.size = bfd_section_size (sectp); |
c906108c | 1892 | } |
330cdd98 | 1893 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 1894 | { |
330cdd98 | 1895 | this->line.s.section = sectp; |
fd361982 | 1896 | this->line.size = bfd_section_size (sectp); |
c906108c | 1897 | } |
330cdd98 | 1898 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 1899 | { |
330cdd98 | 1900 | this->loc.s.section = sectp; |
fd361982 | 1901 | this->loc.size = bfd_section_size (sectp); |
c906108c | 1902 | } |
330cdd98 | 1903 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 1904 | { |
330cdd98 | 1905 | this->loclists.s.section = sectp; |
fd361982 | 1906 | this->loclists.size = bfd_section_size (sectp); |
43988095 | 1907 | } |
330cdd98 | 1908 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 1909 | { |
330cdd98 | 1910 | this->macinfo.s.section = sectp; |
fd361982 | 1911 | this->macinfo.size = bfd_section_size (sectp); |
c906108c | 1912 | } |
330cdd98 | 1913 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 1914 | { |
330cdd98 | 1915 | this->macro.s.section = sectp; |
fd361982 | 1916 | this->macro.size = bfd_section_size (sectp); |
cf2c3c16 | 1917 | } |
330cdd98 | 1918 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 1919 | { |
330cdd98 | 1920 | this->str.s.section = sectp; |
fd361982 | 1921 | this->str.size = bfd_section_size (sectp); |
c906108c | 1922 | } |
18a8505e AT |
1923 | else if (section_is_p (sectp->name, &names.str_offsets)) |
1924 | { | |
1925 | this->str_offsets.s.section = sectp; | |
1926 | this->str_offsets.size = bfd_section_size (sectp); | |
1927 | } | |
330cdd98 | 1928 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 1929 | { |
330cdd98 | 1930 | this->line_str.s.section = sectp; |
fd361982 | 1931 | this->line_str.size = bfd_section_size (sectp); |
43988095 | 1932 | } |
330cdd98 | 1933 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 1934 | { |
330cdd98 | 1935 | this->addr.s.section = sectp; |
fd361982 | 1936 | this->addr.size = bfd_section_size (sectp); |
3019eac3 | 1937 | } |
330cdd98 | 1938 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 1939 | { |
330cdd98 | 1940 | this->frame.s.section = sectp; |
fd361982 | 1941 | this->frame.size = bfd_section_size (sectp); |
b6af0555 | 1942 | } |
330cdd98 | 1943 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 1944 | { |
330cdd98 | 1945 | this->eh_frame.s.section = sectp; |
fd361982 | 1946 | this->eh_frame.size = bfd_section_size (sectp); |
b6af0555 | 1947 | } |
330cdd98 | 1948 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 1949 | { |
330cdd98 | 1950 | this->ranges.s.section = sectp; |
fd361982 | 1951 | this->ranges.size = bfd_section_size (sectp); |
af34e669 | 1952 | } |
330cdd98 | 1953 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 1954 | { |
330cdd98 | 1955 | this->rnglists.s.section = sectp; |
fd361982 | 1956 | this->rnglists.size = bfd_section_size (sectp); |
43988095 | 1957 | } |
330cdd98 | 1958 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 1959 | { |
8b70b953 TT |
1960 | struct dwarf2_section_info type_section; |
1961 | ||
1962 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 1963 | type_section.s.section = sectp; |
fd361982 | 1964 | type_section.size = bfd_section_size (sectp); |
8b70b953 | 1965 | |
fd5866f6 | 1966 | this->types.push_back (type_section); |
348e048f | 1967 | } |
330cdd98 | 1968 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 1969 | { |
330cdd98 | 1970 | this->gdb_index.s.section = sectp; |
fd361982 | 1971 | this->gdb_index.size = bfd_section_size (sectp); |
9291a0cd | 1972 | } |
927aa2e7 JK |
1973 | else if (section_is_p (sectp->name, &names.debug_names)) |
1974 | { | |
1975 | this->debug_names.s.section = sectp; | |
fd361982 | 1976 | this->debug_names.size = bfd_section_size (sectp); |
927aa2e7 JK |
1977 | } |
1978 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
1979 | { | |
1980 | this->debug_aranges.s.section = sectp; | |
fd361982 | 1981 | this->debug_aranges.size = bfd_section_size (sectp); |
927aa2e7 | 1982 | } |
dce234bc | 1983 | |
fd361982 AM |
1984 | if ((bfd_section_flags (sectp) & (SEC_LOAD | SEC_ALLOC)) |
1985 | && bfd_section_vma (sectp) == 0) | |
330cdd98 | 1986 | this->has_section_at_zero = true; |
c906108c SS |
1987 | } |
1988 | ||
dce234bc | 1989 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 1990 | SECTION_NAME. */ |
af34e669 | 1991 | |
dce234bc | 1992 | void |
3017a003 TG |
1993 | dwarf2_get_section_info (struct objfile *objfile, |
1994 | enum dwarf2_section_enum sect, | |
d521ce57 | 1995 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
1996 | bfd_size_type *sizep) |
1997 | { | |
5bfd760d | 1998 | struct dwarf2_per_objfile *data = dwarf2_objfile_data_key.get (objfile); |
dce234bc | 1999 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2000 | |
2001 | /* We may see an objfile without any DWARF, in which case we just | |
2002 | return nothing. */ | |
2003 | if (data == NULL) | |
2004 | { | |
2005 | *sectp = NULL; | |
2006 | *bufp = NULL; | |
2007 | *sizep = 0; | |
2008 | return; | |
2009 | } | |
3017a003 TG |
2010 | switch (sect) |
2011 | { | |
2012 | case DWARF2_DEBUG_FRAME: | |
2013 | info = &data->frame; | |
2014 | break; | |
2015 | case DWARF2_EH_FRAME: | |
2016 | info = &data->eh_frame; | |
2017 | break; | |
2018 | default: | |
2019 | gdb_assert_not_reached ("unexpected section"); | |
2020 | } | |
dce234bc | 2021 | |
96b79293 | 2022 | info->read (objfile); |
dce234bc | 2023 | |
96b79293 | 2024 | *sectp = info->get_bfd_section (); |
dce234bc PP |
2025 | *bufp = info->buffer; |
2026 | *sizep = info->size; | |
2027 | } | |
2028 | ||
36586728 TT |
2029 | /* A helper function to find the sections for a .dwz file. */ |
2030 | ||
2031 | static void | |
2032 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2033 | { | |
9a3c8263 | 2034 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2035 | |
2036 | /* Note that we only support the standard ELF names, because .dwz | |
2037 | is ELF-only (at the time of writing). */ | |
2038 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2039 | { | |
049412e3 | 2040 | dwz_file->abbrev.s.section = sectp; |
fd361982 | 2041 | dwz_file->abbrev.size = bfd_section_size (sectp); |
36586728 TT |
2042 | } |
2043 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2044 | { | |
049412e3 | 2045 | dwz_file->info.s.section = sectp; |
fd361982 | 2046 | dwz_file->info.size = bfd_section_size (sectp); |
36586728 TT |
2047 | } |
2048 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2049 | { | |
049412e3 | 2050 | dwz_file->str.s.section = sectp; |
fd361982 | 2051 | dwz_file->str.size = bfd_section_size (sectp); |
36586728 TT |
2052 | } |
2053 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2054 | { | |
049412e3 | 2055 | dwz_file->line.s.section = sectp; |
fd361982 | 2056 | dwz_file->line.size = bfd_section_size (sectp); |
36586728 TT |
2057 | } |
2058 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2059 | { | |
049412e3 | 2060 | dwz_file->macro.s.section = sectp; |
fd361982 | 2061 | dwz_file->macro.size = bfd_section_size (sectp); |
36586728 | 2062 | } |
2ec9a5e0 TT |
2063 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2064 | { | |
049412e3 | 2065 | dwz_file->gdb_index.s.section = sectp; |
fd361982 | 2066 | dwz_file->gdb_index.size = bfd_section_size (sectp); |
2ec9a5e0 | 2067 | } |
927aa2e7 JK |
2068 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2069 | { | |
2070 | dwz_file->debug_names.s.section = sectp; | |
fd361982 | 2071 | dwz_file->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2072 | } |
36586728 TT |
2073 | } |
2074 | ||
c4973306 | 2075 | /* See dwarf2read.h. */ |
36586728 | 2076 | |
c4973306 | 2077 | struct dwz_file * |
ed2dc618 | 2078 | dwarf2_get_dwz_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 2079 | { |
36586728 | 2080 | const char *filename; |
acd13123 | 2081 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2082 | size_t buildid_len; |
2083 | bfd_byte *buildid; | |
36586728 TT |
2084 | |
2085 | if (dwarf2_per_objfile->dwz_file != NULL) | |
7ff8cb8c | 2086 | return dwarf2_per_objfile->dwz_file.get (); |
36586728 | 2087 | |
4db1a1dc | 2088 | bfd_set_error (bfd_error_no_error); |
791afaa2 TT |
2089 | gdb::unique_xmalloc_ptr<char> data |
2090 | (bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
2091 | &buildid_len_arg, &buildid)); | |
4db1a1dc TT |
2092 | if (data == NULL) |
2093 | { | |
2094 | if (bfd_get_error () == bfd_error_no_error) | |
2095 | return NULL; | |
2096 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2097 | bfd_errmsg (bfd_get_error ())); | |
2098 | } | |
791afaa2 TT |
2099 | |
2100 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2101 | |
acd13123 TT |
2102 | buildid_len = (size_t) buildid_len_arg; |
2103 | ||
791afaa2 | 2104 | filename = data.get (); |
d721ba37 PA |
2105 | |
2106 | std::string abs_storage; | |
36586728 TT |
2107 | if (!IS_ABSOLUTE_PATH (filename)) |
2108 | { | |
14278e1f TT |
2109 | gdb::unique_xmalloc_ptr<char> abs |
2110 | = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); | |
36586728 | 2111 | |
14278e1f | 2112 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2113 | filename = abs_storage.c_str (); |
36586728 TT |
2114 | } |
2115 | ||
dc294be5 TT |
2116 | /* First try the file name given in the section. If that doesn't |
2117 | work, try to use the build-id instead. */ | |
192b62ce | 2118 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget, -1)); |
dc294be5 | 2119 | if (dwz_bfd != NULL) |
36586728 | 2120 | { |
192b62ce | 2121 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
0f58c9e8 | 2122 | dwz_bfd.reset (nullptr); |
36586728 TT |
2123 | } |
2124 | ||
dc294be5 TT |
2125 | if (dwz_bfd == NULL) |
2126 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2127 | ||
0d79cdc4 AM |
2128 | if (dwz_bfd == nullptr) |
2129 | { | |
2130 | gdb::unique_xmalloc_ptr<char> alt_filename; | |
2131 | const char *origname = dwarf2_per_objfile->objfile->original_name; | |
2132 | ||
2133 | scoped_fd fd (debuginfod_debuginfo_query (buildid, | |
2134 | buildid_len, | |
2135 | origname, | |
2136 | &alt_filename)); | |
2137 | ||
2138 | if (fd.get () >= 0) | |
2139 | { | |
2140 | /* File successfully retrieved from server. */ | |
2141 | dwz_bfd = gdb_bfd_open (alt_filename.get (), gnutarget, -1); | |
2142 | ||
2143 | if (dwz_bfd == nullptr) | |
2144 | warning (_("File \"%s\" from debuginfod cannot be opened as bfd"), | |
2145 | alt_filename.get ()); | |
2146 | else if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) | |
2147 | dwz_bfd.reset (nullptr); | |
2148 | } | |
2149 | } | |
2150 | ||
dc294be5 TT |
2151 | if (dwz_bfd == NULL) |
2152 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2153 | objfile_name (dwarf2_per_objfile->objfile)); | |
2154 | ||
7ff8cb8c TT |
2155 | std::unique_ptr<struct dwz_file> result |
2156 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2157 | |
7ff8cb8c TT |
2158 | bfd_map_over_sections (result->dwz_bfd.get (), locate_dwz_sections, |
2159 | result.get ()); | |
36586728 | 2160 | |
7ff8cb8c TT |
2161 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, |
2162 | result->dwz_bfd.get ()); | |
2163 | dwarf2_per_objfile->dwz_file = std::move (result); | |
2164 | return dwarf2_per_objfile->dwz_file.get (); | |
36586728 | 2165 | } |
9291a0cd | 2166 | \f |
7b9f3c50 DE |
2167 | /* DWARF quick_symbols_functions support. */ |
2168 | ||
2169 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2170 | unique line tables, so we maintain a separate table of all .debug_line | |
2171 | derived entries to support the sharing. | |
2172 | All the quick functions need is the list of file names. We discard the | |
2173 | line_header when we're done and don't need to record it here. */ | |
2174 | struct quick_file_names | |
2175 | { | |
094b34ac DE |
2176 | /* The data used to construct the hash key. */ |
2177 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2178 | |
2179 | /* The number of entries in file_names, real_names. */ | |
2180 | unsigned int num_file_names; | |
2181 | ||
2182 | /* The file names from the line table, after being run through | |
2183 | file_full_name. */ | |
2184 | const char **file_names; | |
2185 | ||
2186 | /* The file names from the line table after being run through | |
2187 | gdb_realpath. These are computed lazily. */ | |
2188 | const char **real_names; | |
2189 | }; | |
2190 | ||
2191 | /* When using the index (and thus not using psymtabs), each CU has an | |
2192 | object of this type. This is used to hold information needed by | |
2193 | the various "quick" methods. */ | |
2194 | struct dwarf2_per_cu_quick_data | |
2195 | { | |
2196 | /* The file table. This can be NULL if there was no file table | |
2197 | or it's currently not read in. | |
2198 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2199 | struct quick_file_names *file_names; | |
2200 | ||
2201 | /* The corresponding symbol table. This is NULL if symbols for this | |
2202 | CU have not yet been read. */ | |
43f3e411 | 2203 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
2204 | |
2205 | /* A temporary mark bit used when iterating over all CUs in | |
2206 | expand_symtabs_matching. */ | |
2207 | unsigned int mark : 1; | |
2208 | ||
2209 | /* True if we've tried to read the file table and found there isn't one. | |
2210 | There will be no point in trying to read it again next time. */ | |
2211 | unsigned int no_file_data : 1; | |
2212 | }; | |
2213 | ||
094b34ac DE |
2214 | /* Utility hash function for a stmt_list_hash. */ |
2215 | ||
2216 | static hashval_t | |
2217 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2218 | { | |
2219 | hashval_t v = 0; | |
2220 | ||
2221 | if (stmt_list_hash->dwo_unit != NULL) | |
2222 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2223 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2224 | return v; |
2225 | } | |
2226 | ||
2227 | /* Utility equality function for a stmt_list_hash. */ | |
2228 | ||
2229 | static int | |
2230 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2231 | const struct stmt_list_hash *rhs) | |
2232 | { | |
2233 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2234 | return 0; | |
2235 | if (lhs->dwo_unit != NULL | |
2236 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2237 | return 0; | |
2238 | ||
9c541725 | 2239 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2240 | } |
2241 | ||
7b9f3c50 DE |
2242 | /* Hash function for a quick_file_names. */ |
2243 | ||
2244 | static hashval_t | |
2245 | hash_file_name_entry (const void *e) | |
2246 | { | |
9a3c8263 SM |
2247 | const struct quick_file_names *file_data |
2248 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2249 | |
094b34ac | 2250 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2251 | } |
2252 | ||
2253 | /* Equality function for a quick_file_names. */ | |
2254 | ||
2255 | static int | |
2256 | eq_file_name_entry (const void *a, const void *b) | |
2257 | { | |
9a3c8263 SM |
2258 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2259 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2260 | |
094b34ac | 2261 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2262 | } |
2263 | ||
2264 | /* Delete function for a quick_file_names. */ | |
2265 | ||
2266 | static void | |
2267 | delete_file_name_entry (void *e) | |
2268 | { | |
9a3c8263 | 2269 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2270 | int i; |
2271 | ||
2272 | for (i = 0; i < file_data->num_file_names; ++i) | |
2273 | { | |
2274 | xfree ((void*) file_data->file_names[i]); | |
2275 | if (file_data->real_names) | |
2276 | xfree ((void*) file_data->real_names[i]); | |
2277 | } | |
2278 | ||
2279 | /* The space for the struct itself lives on objfile_obstack, | |
2280 | so we don't free it here. */ | |
2281 | } | |
2282 | ||
2283 | /* Create a quick_file_names hash table. */ | |
2284 | ||
5895093f | 2285 | static htab_up |
7b9f3c50 DE |
2286 | create_quick_file_names_table (unsigned int nr_initial_entries) |
2287 | { | |
5895093f TT |
2288 | return htab_up (htab_create_alloc (nr_initial_entries, |
2289 | hash_file_name_entry, eq_file_name_entry, | |
2290 | delete_file_name_entry, xcalloc, xfree)); | |
7b9f3c50 | 2291 | } |
9291a0cd | 2292 | |
918dd910 JK |
2293 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2294 | have to be created afterwards. You should call age_cached_comp_units after | |
2295 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2296 | ||
2297 | static void | |
58f0c718 | 2298 | load_cu (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
918dd910 | 2299 | { |
3019eac3 | 2300 | if (per_cu->is_debug_types) |
e5fe5e75 | 2301 | load_full_type_unit (per_cu); |
918dd910 | 2302 | else |
58f0c718 | 2303 | load_full_comp_unit (per_cu, skip_partial, language_minimal); |
918dd910 | 2304 | |
cc12ce38 DE |
2305 | if (per_cu->cu == NULL) |
2306 | return; /* Dummy CU. */ | |
2dc860c0 DE |
2307 | |
2308 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2309 | } |
2310 | ||
a0f42c21 | 2311 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2312 | |
9291a0cd | 2313 | static void |
58f0c718 | 2314 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2315 | { |
ed2dc618 | 2316 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9291a0cd | 2317 | |
f4dc4d17 DE |
2318 | /* Skip type_unit_groups, reading the type units they contain |
2319 | is handled elsewhere. */ | |
197400e8 | 2320 | if (per_cu->type_unit_group_p ()) |
f4dc4d17 DE |
2321 | return; |
2322 | ||
b303c6f6 AB |
2323 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2324 | the queue. After this point we're guaranteed to leave this function | |
2325 | with the dwarf queue empty. */ | |
39856def | 2326 | dwarf2_queue_guard q_guard (dwarf2_per_objfile); |
9291a0cd | 2327 | |
95554aad | 2328 | if (dwarf2_per_objfile->using_index |
43f3e411 | 2329 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
2330 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
2331 | { | |
2332 | queue_comp_unit (per_cu, language_minimal); | |
58f0c718 | 2333 | load_cu (per_cu, skip_partial); |
89e63ee4 DE |
2334 | |
2335 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2336 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2337 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2338 | if (!per_cu->is_debug_types | |
cc12ce38 | 2339 | && per_cu->cu != NULL |
89e63ee4 DE |
2340 | && per_cu->cu->dwo_unit != NULL |
2341 | && dwarf2_per_objfile->index_table != NULL | |
2342 | && dwarf2_per_objfile->index_table->version <= 7 | |
2343 | /* DWP files aren't supported yet. */ | |
ed2dc618 | 2344 | && get_dwp_file (dwarf2_per_objfile) == NULL) |
89e63ee4 | 2345 | queue_and_load_all_dwo_tus (per_cu); |
95554aad | 2346 | } |
9291a0cd | 2347 | |
ed2dc618 | 2348 | process_queue (dwarf2_per_objfile); |
9291a0cd TT |
2349 | |
2350 | /* Age the cache, releasing compilation units that have not | |
2351 | been used recently. */ | |
ed2dc618 | 2352 | age_cached_comp_units (dwarf2_per_objfile); |
9291a0cd TT |
2353 | } |
2354 | ||
2355 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2356 | the objfile from which this CU came. Returns the resulting symbol | |
2357 | table. */ | |
2fdf6df6 | 2358 | |
43f3e411 | 2359 | static struct compunit_symtab * |
58f0c718 | 2360 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2361 | { |
ed2dc618 SM |
2362 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
2363 | ||
95554aad | 2364 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 2365 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd | 2366 | { |
11ed8cad | 2367 | free_cached_comp_units freer (dwarf2_per_objfile); |
c83dd867 | 2368 | scoped_restore decrementer = increment_reading_symtab (); |
58f0c718 | 2369 | dw2_do_instantiate_symtab (per_cu, skip_partial); |
ed2dc618 | 2370 | process_cu_includes (dwarf2_per_objfile); |
9291a0cd | 2371 | } |
f194fefb | 2372 | |
43f3e411 | 2373 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
2374 | } |
2375 | ||
ff4c9fec | 2376 | /* See declaration. */ |
f4dc4d17 | 2377 | |
ff4c9fec SM |
2378 | dwarf2_per_cu_data * |
2379 | dwarf2_per_objfile::get_cutu (int index) | |
2380 | { | |
b76e467d | 2381 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2382 | { |
b76e467d | 2383 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2384 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2385 | return &this->all_type_units[index]->per_cu; |
2386 | } | |
f4dc4d17 | 2387 | |
ff4c9fec SM |
2388 | return this->all_comp_units[index]; |
2389 | } | |
f4dc4d17 | 2390 | |
ff4c9fec | 2391 | /* See declaration. */ |
2fdf6df6 | 2392 | |
ff4c9fec SM |
2393 | dwarf2_per_cu_data * |
2394 | dwarf2_per_objfile::get_cu (int index) | |
1fd400ff | 2395 | { |
b76e467d | 2396 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2397 | |
ff4c9fec | 2398 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2399 | } |
2400 | ||
ff4c9fec | 2401 | /* See declaration. */ |
f4dc4d17 | 2402 | |
ff4c9fec SM |
2403 | signatured_type * |
2404 | dwarf2_per_objfile::get_tu (int index) | |
f4dc4d17 | 2405 | { |
b2bdb8cf | 2406 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2407 | |
ff4c9fec | 2408 | return this->all_type_units[index]; |
1fd400ff TT |
2409 | } |
2410 | ||
4b514bc8 JK |
2411 | /* Return a new dwarf2_per_cu_data allocated on OBJFILE's |
2412 | objfile_obstack, and constructed with the specified field | |
2413 | values. */ | |
2414 | ||
2415 | static dwarf2_per_cu_data * | |
ed2dc618 | 2416 | create_cu_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4b514bc8 JK |
2417 | struct dwarf2_section_info *section, |
2418 | int is_dwz, | |
2419 | sect_offset sect_off, ULONGEST length) | |
2420 | { | |
ed2dc618 | 2421 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4b514bc8 JK |
2422 | dwarf2_per_cu_data *the_cu |
2423 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2424 | struct dwarf2_per_cu_data); | |
2425 | the_cu->sect_off = sect_off; | |
2426 | the_cu->length = length; | |
e3b94546 | 2427 | the_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
4b514bc8 JK |
2428 | the_cu->section = section; |
2429 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2430 | struct dwarf2_per_cu_quick_data); | |
2431 | the_cu->is_dwz = is_dwz; | |
2432 | return the_cu; | |
2433 | } | |
2434 | ||
2ec9a5e0 TT |
2435 | /* A helper for create_cus_from_index that handles a given list of |
2436 | CUs. */ | |
2fdf6df6 | 2437 | |
74a0d9f6 | 2438 | static void |
12359b5e | 2439 | create_cus_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
2440 | const gdb_byte *cu_list, offset_type n_elements, |
2441 | struct dwarf2_section_info *section, | |
b76e467d | 2442 | int is_dwz) |
9291a0cd | 2443 | { |
12359b5e | 2444 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2445 | { |
74a0d9f6 | 2446 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2447 | |
2448 | sect_offset sect_off | |
2449 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2450 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2451 | cu_list += 2 * 8; |
2452 | ||
b76e467d | 2453 | dwarf2_per_cu_data *per_cu |
ed2dc618 SM |
2454 | = create_cu_from_index_list (dwarf2_per_objfile, section, is_dwz, |
2455 | sect_off, length); | |
b76e467d | 2456 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
9291a0cd | 2457 | } |
9291a0cd TT |
2458 | } |
2459 | ||
2ec9a5e0 | 2460 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 2461 | the CU objects for this objfile. */ |
2ec9a5e0 | 2462 | |
74a0d9f6 | 2463 | static void |
12359b5e | 2464 | create_cus_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
2465 | const gdb_byte *cu_list, offset_type cu_list_elements, |
2466 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2467 | { | |
b76e467d SM |
2468 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
2469 | dwarf2_per_objfile->all_comp_units.reserve | |
2470 | ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 2471 | |
12359b5e | 2472 | create_cus_from_index_list (dwarf2_per_objfile, cu_list, cu_list_elements, |
b76e467d | 2473 | &dwarf2_per_objfile->info, 0); |
2ec9a5e0 TT |
2474 | |
2475 | if (dwz_elements == 0) | |
74a0d9f6 | 2476 | return; |
2ec9a5e0 | 2477 | |
12359b5e SM |
2478 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
2479 | create_cus_from_index_list (dwarf2_per_objfile, dwz_list, dwz_elements, | |
b76e467d | 2480 | &dwz->info, 1); |
2ec9a5e0 TT |
2481 | } |
2482 | ||
1fd400ff | 2483 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2484 | |
74a0d9f6 | 2485 | static void |
12359b5e SM |
2486 | create_signatured_type_table_from_index |
2487 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
2488 | struct dwarf2_section_info *section, | |
2489 | const gdb_byte *bytes, | |
2490 | offset_type elements) | |
1fd400ff | 2491 | { |
12359b5e | 2492 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
1fd400ff | 2493 | |
b2bdb8cf SM |
2494 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
2495 | dwarf2_per_objfile->all_type_units.reserve (elements / 3); | |
1fd400ff | 2496 | |
298e9637 | 2497 | htab_up sig_types_hash = allocate_signatured_type_table (); |
1fd400ff | 2498 | |
12359b5e | 2499 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 2500 | { |
52dc124a | 2501 | struct signatured_type *sig_type; |
9c541725 | 2502 | ULONGEST signature; |
1fd400ff | 2503 | void **slot; |
9c541725 | 2504 | cu_offset type_offset_in_tu; |
1fd400ff | 2505 | |
74a0d9f6 | 2506 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2507 | sect_offset sect_off |
2508 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2509 | type_offset_in_tu | |
2510 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
2511 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2512 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2513 | bytes += 3 * 8; | |
2514 | ||
52dc124a | 2515 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2516 | struct signatured_type); |
52dc124a | 2517 | sig_type->signature = signature; |
9c541725 | 2518 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 2519 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 2520 | sig_type->per_cu.section = section; |
9c541725 | 2521 | sig_type->per_cu.sect_off = sect_off; |
e3b94546 | 2522 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
52dc124a | 2523 | sig_type->per_cu.v.quick |
1fd400ff TT |
2524 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2525 | struct dwarf2_per_cu_quick_data); | |
2526 | ||
b0b6a987 | 2527 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
52dc124a | 2528 | *slot = sig_type; |
1fd400ff | 2529 | |
b2bdb8cf | 2530 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
1fd400ff TT |
2531 | } |
2532 | ||
b0b6a987 | 2533 | dwarf2_per_objfile->signatured_types = std::move (sig_types_hash); |
1fd400ff TT |
2534 | } |
2535 | ||
927aa2e7 JK |
2536 | /* Create the signatured type hash table from .debug_names. */ |
2537 | ||
2538 | static void | |
2539 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 2540 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
2541 | const mapped_debug_names &map, |
2542 | struct dwarf2_section_info *section, | |
2543 | struct dwarf2_section_info *abbrev_section) | |
2544 | { | |
ed2dc618 SM |
2545 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2546 | ||
96b79293 TT |
2547 | section->read (objfile); |
2548 | abbrev_section->read (objfile); | |
927aa2e7 | 2549 | |
b2bdb8cf SM |
2550 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
2551 | dwarf2_per_objfile->all_type_units.reserve (map.tu_count); | |
927aa2e7 | 2552 | |
298e9637 | 2553 | htab_up sig_types_hash = allocate_signatured_type_table (); |
927aa2e7 JK |
2554 | |
2555 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
2556 | { | |
2557 | struct signatured_type *sig_type; | |
927aa2e7 | 2558 | void **slot; |
927aa2e7 JK |
2559 | |
2560 | sect_offset sect_off | |
2561 | = (sect_offset) (extract_unsigned_integer | |
2562 | (map.tu_table_reordered + i * map.offset_size, | |
2563 | map.offset_size, | |
2564 | map.dwarf5_byte_order)); | |
2565 | ||
2566 | comp_unit_head cu_header; | |
ed2dc618 SM |
2567 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
2568 | abbrev_section, | |
927aa2e7 JK |
2569 | section->buffer + to_underlying (sect_off), |
2570 | rcuh_kind::TYPE); | |
2571 | ||
2572 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2573 | struct signatured_type); | |
2574 | sig_type->signature = cu_header.signature; | |
2575 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
2576 | sig_type->per_cu.is_debug_types = 1; | |
2577 | sig_type->per_cu.section = section; | |
2578 | sig_type->per_cu.sect_off = sect_off; | |
e3b94546 | 2579 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
927aa2e7 JK |
2580 | sig_type->per_cu.v.quick |
2581 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2582 | struct dwarf2_per_cu_quick_data); | |
2583 | ||
b0b6a987 | 2584 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
927aa2e7 JK |
2585 | *slot = sig_type; |
2586 | ||
b2bdb8cf | 2587 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
927aa2e7 JK |
2588 | } |
2589 | ||
b0b6a987 | 2590 | dwarf2_per_objfile->signatured_types = std::move (sig_types_hash); |
927aa2e7 JK |
2591 | } |
2592 | ||
9291a0cd TT |
2593 | /* Read the address map data from the mapped index, and use it to |
2594 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2595 | |
9291a0cd | 2596 | static void |
ed2dc618 SM |
2597 | create_addrmap_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2598 | struct mapped_index *index) | |
9291a0cd | 2599 | { |
ed2dc618 | 2600 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 2601 | struct gdbarch *gdbarch = objfile->arch (); |
9291a0cd | 2602 | const gdb_byte *iter, *end; |
9291a0cd | 2603 | struct addrmap *mutable_map; |
9291a0cd TT |
2604 | CORE_ADDR baseaddr; |
2605 | ||
8268c778 PA |
2606 | auto_obstack temp_obstack; |
2607 | ||
9291a0cd TT |
2608 | mutable_map = addrmap_create_mutable (&temp_obstack); |
2609 | ||
f00a2de2 PA |
2610 | iter = index->address_table.data (); |
2611 | end = iter + index->address_table.size (); | |
9291a0cd | 2612 | |
b3b3bada | 2613 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
2614 | |
2615 | while (iter < end) | |
2616 | { | |
2617 | ULONGEST hi, lo, cu_index; | |
2618 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2619 | iter += 8; | |
2620 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2621 | iter += 8; | |
2622 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2623 | iter += 4; | |
f652bce2 | 2624 | |
24a55014 | 2625 | if (lo > hi) |
f652bce2 | 2626 | { |
b98664d3 | 2627 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 2628 | hex_string (lo), hex_string (hi)); |
24a55014 | 2629 | continue; |
f652bce2 | 2630 | } |
24a55014 | 2631 | |
b76e467d | 2632 | if (cu_index >= dwarf2_per_objfile->all_comp_units.size ()) |
f652bce2 | 2633 | { |
b98664d3 | 2634 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 2635 | (unsigned) cu_index); |
24a55014 | 2636 | continue; |
f652bce2 | 2637 | } |
24a55014 | 2638 | |
79748972 TT |
2639 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
2640 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 2641 | addrmap_set_empty (mutable_map, lo, hi - 1, |
ff4c9fec | 2642 | dwarf2_per_objfile->get_cu (cu_index)); |
9291a0cd TT |
2643 | } |
2644 | ||
d320c2b5 | 2645 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2646 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
9291a0cd TT |
2647 | } |
2648 | ||
927aa2e7 JK |
2649 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
2650 | populate the objfile's psymtabs_addrmap. */ | |
2651 | ||
2652 | static void | |
ed2dc618 | 2653 | create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
2654 | struct dwarf2_section_info *section) |
2655 | { | |
ed2dc618 | 2656 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 | 2657 | bfd *abfd = objfile->obfd; |
08feed99 | 2658 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 2659 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
927aa2e7 JK |
2660 | |
2661 | auto_obstack temp_obstack; | |
2662 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
2663 | ||
2664 | std::unordered_map<sect_offset, | |
2665 | dwarf2_per_cu_data *, | |
2666 | gdb::hash_enum<sect_offset>> | |
2667 | debug_info_offset_to_per_cu; | |
b76e467d | 2668 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 2669 | { |
927aa2e7 JK |
2670 | const auto insertpair |
2671 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
2672 | if (!insertpair.second) | |
2673 | { | |
2674 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
2675 | "debug_info_offset %s, ignoring .debug_aranges."), |
2676 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
2677 | return; |
2678 | } | |
2679 | } | |
2680 | ||
96b79293 | 2681 | section->read (objfile); |
927aa2e7 JK |
2682 | |
2683 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
2684 | ||
2685 | const gdb_byte *addr = section->buffer; | |
2686 | ||
2687 | while (addr < section->buffer + section->size) | |
2688 | { | |
2689 | const gdb_byte *const entry_addr = addr; | |
2690 | unsigned int bytes_read; | |
2691 | ||
2692 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
2693 | &bytes_read); | |
2694 | addr += bytes_read; | |
2695 | ||
2696 | const gdb_byte *const entry_end = addr + entry_length; | |
2697 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
2698 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
2699 | if (addr + entry_length > section->buffer + section->size) | |
2700 | { | |
47e3f474 | 2701 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2702 | "length %s exceeds section length %s, " |
2703 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2704 | objfile_name (objfile), |
2705 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2706 | plongest (bytes_read + entry_length), |
2707 | pulongest (section->size)); | |
2708 | return; | |
2709 | } | |
2710 | ||
2711 | /* The version number. */ | |
2712 | const uint16_t version = read_2_bytes (abfd, addr); | |
2713 | addr += 2; | |
2714 | if (version != 2) | |
2715 | { | |
47e3f474 | 2716 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2717 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
2718 | objfile_name (objfile), |
2719 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
2720 | return; |
2721 | } | |
2722 | ||
2723 | const uint64_t debug_info_offset | |
2724 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
2725 | addr += offset_size; | |
2726 | const auto per_cu_it | |
2727 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
2728 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
2729 | { | |
47e3f474 | 2730 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2731 | "debug_info_offset %s does not exists, " |
2732 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2733 | objfile_name (objfile), |
2734 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2735 | pulongest (debug_info_offset)); |
2736 | return; | |
2737 | } | |
2738 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
2739 | ||
2740 | const uint8_t address_size = *addr++; | |
2741 | if (address_size < 1 || address_size > 8) | |
2742 | { | |
47e3f474 | 2743 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2744 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
2745 | objfile_name (objfile), |
2746 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
2747 | return; |
2748 | } | |
2749 | ||
2750 | const uint8_t segment_selector_size = *addr++; | |
2751 | if (segment_selector_size != 0) | |
2752 | { | |
47e3f474 | 2753 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2754 | "segment_selector_size %u is not supported, " |
2755 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2756 | objfile_name (objfile), |
2757 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2758 | segment_selector_size); |
2759 | return; | |
2760 | } | |
2761 | ||
2762 | /* Must pad to an alignment boundary that is twice the address | |
2763 | size. It is undocumented by the DWARF standard but GCC does | |
2764 | use it. */ | |
2765 | for (size_t padding = ((-(addr - section->buffer)) | |
2766 | & (2 * address_size - 1)); | |
2767 | padding > 0; padding--) | |
2768 | if (*addr++ != 0) | |
2769 | { | |
47e3f474 | 2770 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2771 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
2772 | objfile_name (objfile), |
2773 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2774 | return; |
2775 | } | |
2776 | ||
2777 | for (;;) | |
2778 | { | |
2779 | if (addr + 2 * address_size > entry_end) | |
2780 | { | |
47e3f474 | 2781 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2782 | "address list is not properly terminated, " |
2783 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2784 | objfile_name (objfile), |
2785 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2786 | return; |
2787 | } | |
2788 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
2789 | dwarf5_byte_order); | |
2790 | addr += address_size; | |
2791 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
2792 | dwarf5_byte_order); | |
2793 | addr += address_size; | |
2794 | if (start == 0 && length == 0) | |
2795 | break; | |
2796 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
2797 | { | |
2798 | /* Symbol was eliminated due to a COMDAT group. */ | |
2799 | continue; | |
2800 | } | |
2801 | ULONGEST end = start + length; | |
79748972 TT |
2802 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
2803 | - baseaddr); | |
2804 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
2805 | - baseaddr); | |
927aa2e7 JK |
2806 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
2807 | } | |
2808 | } | |
2809 | ||
d320c2b5 | 2810 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2811 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
927aa2e7 JK |
2812 | } |
2813 | ||
9291a0cd TT |
2814 | /* Find a slot in the mapped index INDEX for the object named NAME. |
2815 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
2816 | constant pool and return true. If NAME cannot be found, return |
2817 | false. */ | |
2fdf6df6 | 2818 | |
109483d9 | 2819 | static bool |
9291a0cd TT |
2820 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
2821 | offset_type **vec_out) | |
2822 | { | |
0cf03b49 | 2823 | offset_type hash; |
9291a0cd | 2824 | offset_type slot, step; |
559a7a62 | 2825 | int (*cmp) (const char *, const char *); |
9291a0cd | 2826 | |
791afaa2 | 2827 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 2828 | if (current_language->la_language == language_cplus |
45280282 IB |
2829 | || current_language->la_language == language_fortran |
2830 | || current_language->la_language == language_d) | |
0cf03b49 JK |
2831 | { |
2832 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2833 | not contain any. */ | |
a8719064 | 2834 | |
72998fb3 | 2835 | if (strchr (name, '(') != NULL) |
0cf03b49 | 2836 | { |
109483d9 | 2837 | without_params = cp_remove_params (name); |
0cf03b49 | 2838 | |
72998fb3 | 2839 | if (without_params != NULL) |
791afaa2 | 2840 | name = without_params.get (); |
0cf03b49 JK |
2841 | } |
2842 | } | |
2843 | ||
559a7a62 | 2844 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2845 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2846 | simulate our NAME being searched is also lowercased. */ |
2847 | hash = mapped_index_string_hash ((index->version == 4 | |
2848 | && case_sensitivity == case_sensitive_off | |
2849 | ? 5 : index->version), | |
2850 | name); | |
2851 | ||
f00a2de2 PA |
2852 | slot = hash & (index->symbol_table.size () - 1); |
2853 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 2854 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2855 | |
2856 | for (;;) | |
2857 | { | |
9291a0cd | 2858 | const char *str; |
f00a2de2 PA |
2859 | |
2860 | const auto &bucket = index->symbol_table[slot]; | |
2861 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 2862 | return false; |
9291a0cd | 2863 | |
f00a2de2 | 2864 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 2865 | if (!cmp (name, str)) |
9291a0cd TT |
2866 | { |
2867 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 2868 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 2869 | return true; |
9291a0cd TT |
2870 | } |
2871 | ||
f00a2de2 | 2872 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
2873 | } |
2874 | } | |
2875 | ||
4485a1c1 SM |
2876 | /* A helper function that reads the .gdb_index from BUFFER and fills |
2877 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 2878 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
2879 | ok to use deprecated sections. |
2880 | ||
2881 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
2882 | out parameters that are filled in with information about the CU and | |
2883 | TU lists in the section. | |
2884 | ||
4485a1c1 | 2885 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 2886 | |
d33bc52e | 2887 | static bool |
3810f182 | 2888 | read_gdb_index_from_buffer (const char *filename, |
4485a1c1 SM |
2889 | bool deprecated_ok, |
2890 | gdb::array_view<const gdb_byte> buffer, | |
2891 | struct mapped_index *map, | |
2892 | const gdb_byte **cu_list, | |
2893 | offset_type *cu_list_elements, | |
2894 | const gdb_byte **types_list, | |
2895 | offset_type *types_list_elements) | |
2896 | { | |
2897 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 2898 | |
9291a0cd | 2899 | /* Version check. */ |
4485a1c1 | 2900 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2901 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2902 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2903 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 2904 | indices. */ |
831adc1f | 2905 | if (version < 4) |
481860b3 GB |
2906 | { |
2907 | static int warning_printed = 0; | |
2908 | if (!warning_printed) | |
2909 | { | |
2910 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 2911 | filename); |
481860b3 GB |
2912 | warning_printed = 1; |
2913 | } | |
2914 | return 0; | |
2915 | } | |
2916 | /* Index version 4 uses a different hash function than index version | |
2917 | 5 and later. | |
2918 | ||
2919 | Versions earlier than 6 did not emit psymbols for inlined | |
2920 | functions. Using these files will cause GDB not to be able to | |
2921 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
2922 | indices unless the user has done |
2923 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 2924 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
2925 | { |
2926 | static int warning_printed = 0; | |
2927 | if (!warning_printed) | |
2928 | { | |
e615022a DE |
2929 | warning (_("\ |
2930 | Skipping deprecated .gdb_index section in %s.\n\ | |
2931 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
2932 | to use the section anyway."), | |
2ec9a5e0 | 2933 | filename); |
481860b3 GB |
2934 | warning_printed = 1; |
2935 | } | |
2936 | return 0; | |
2937 | } | |
796a7ff8 | 2938 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
2939 | of the TU (for symbols coming from TUs), |
2940 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
2941 | Plus gold-generated indices can have duplicate entries for global symbols, | |
2942 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
2943 | These are just performance bugs, and we can't distinguish gdb-generated | |
2944 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 2945 | |
481860b3 | 2946 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 2947 | longer backward compatible. */ |
796a7ff8 | 2948 | if (version > 8) |
594e8718 | 2949 | return 0; |
9291a0cd | 2950 | |
559a7a62 | 2951 | map->version = version; |
9291a0cd | 2952 | |
4485a1c1 | 2953 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 2954 | |
4485a1c1 | 2955 | int i = 0; |
2ec9a5e0 TT |
2956 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
2957 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
2958 | / 8); | |
1fd400ff TT |
2959 | ++i; |
2960 | ||
2ec9a5e0 TT |
2961 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
2962 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
2963 | - MAYBE_SWAP (metadata[i])) | |
2964 | / 8); | |
987d643c | 2965 | ++i; |
1fd400ff | 2966 | |
f00a2de2 PA |
2967 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
2968 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
2969 | map->address_table | |
2970 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
2971 | ++i; |
2972 | ||
f00a2de2 PA |
2973 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
2974 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
2975 | map->symbol_table | |
2976 | = gdb::array_view<mapped_index::symbol_table_slot> | |
2977 | ((mapped_index::symbol_table_slot *) symbol_table, | |
2978 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 2979 | |
f00a2de2 | 2980 | ++i; |
f9d83a0b | 2981 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 2982 | |
2ec9a5e0 TT |
2983 | return 1; |
2984 | } | |
2985 | ||
4485a1c1 SM |
2986 | /* Callback types for dwarf2_read_gdb_index. */ |
2987 | ||
2988 | typedef gdb::function_view | |
2989 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_objfile *)> | |
2990 | get_gdb_index_contents_ftype; | |
2991 | typedef gdb::function_view | |
2992 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
2993 | get_gdb_index_contents_dwz_ftype; | |
2994 | ||
927aa2e7 | 2995 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
2996 | elements of all the CUs and return 1. Otherwise, return 0. */ |
2997 | ||
2998 | static int | |
4485a1c1 SM |
2999 | dwarf2_read_gdb_index |
3000 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
3001 | get_gdb_index_contents_ftype get_gdb_index_contents, | |
3002 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3003 | { |
2ec9a5e0 TT |
3004 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3005 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3006 | struct dwz_file *dwz; |
12359b5e | 3007 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ec9a5e0 | 3008 | |
4485a1c1 SM |
3009 | gdb::array_view<const gdb_byte> main_index_contents |
3010 | = get_gdb_index_contents (objfile, dwarf2_per_objfile); | |
3011 | ||
3012 | if (main_index_contents.empty ()) | |
3013 | return 0; | |
3014 | ||
3063847f | 3015 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
3810f182 | 3016 | if (!read_gdb_index_from_buffer (objfile_name (objfile), |
4485a1c1 SM |
3017 | use_deprecated_index_sections, |
3018 | main_index_contents, map.get (), &cu_list, | |
3019 | &cu_list_elements, &types_list, | |
3020 | &types_list_elements)) | |
2ec9a5e0 TT |
3021 | return 0; |
3022 | ||
0fefef59 | 3023 | /* Don't use the index if it's empty. */ |
3063847f | 3024 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3025 | return 0; |
3026 | ||
2ec9a5e0 TT |
3027 | /* If there is a .dwz file, read it so we can get its CU list as |
3028 | well. */ | |
ed2dc618 | 3029 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 3030 | if (dwz != NULL) |
2ec9a5e0 | 3031 | { |
2ec9a5e0 TT |
3032 | struct mapped_index dwz_map; |
3033 | const gdb_byte *dwz_types_ignore; | |
3034 | offset_type dwz_types_elements_ignore; | |
3035 | ||
4485a1c1 SM |
3036 | gdb::array_view<const gdb_byte> dwz_index_content |
3037 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3038 | ||
3039 | if (dwz_index_content.empty ()) | |
3040 | return 0; | |
3041 | ||
3810f182 | 3042 | if (!read_gdb_index_from_buffer (bfd_get_filename (dwz->dwz_bfd.get ()), |
00f93c44 | 3043 | 1, dwz_index_content, &dwz_map, |
4485a1c1 SM |
3044 | &dwz_list, &dwz_list_elements, |
3045 | &dwz_types_ignore, | |
3046 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3047 | { |
3048 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3049 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3050 | return 0; |
3051 | } | |
3052 | } | |
3053 | ||
12359b5e SM |
3054 | create_cus_from_index (dwarf2_per_objfile, cu_list, cu_list_elements, |
3055 | dwz_list, dwz_list_elements); | |
1fd400ff | 3056 | |
8b70b953 TT |
3057 | if (types_list_elements) |
3058 | { | |
8b70b953 TT |
3059 | /* We can only handle a single .debug_types when we have an |
3060 | index. */ | |
fd5866f6 | 3061 | if (dwarf2_per_objfile->types.size () != 1) |
8b70b953 TT |
3062 | return 0; |
3063 | ||
fd5866f6 | 3064 | dwarf2_section_info *section = &dwarf2_per_objfile->types[0]; |
8b70b953 | 3065 | |
12359b5e SM |
3066 | create_signatured_type_table_from_index (dwarf2_per_objfile, section, |
3067 | types_list, types_list_elements); | |
8b70b953 | 3068 | } |
9291a0cd | 3069 | |
3063847f | 3070 | create_addrmap_from_index (dwarf2_per_objfile, map.get ()); |
9291a0cd | 3071 | |
3063847f | 3072 | dwarf2_per_objfile->index_table = std::move (map); |
9291a0cd | 3073 | dwarf2_per_objfile->using_index = 1; |
7b9f3c50 | 3074 | dwarf2_per_objfile->quick_file_names_table = |
b76e467d | 3075 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
9291a0cd TT |
3076 | |
3077 | return 1; | |
3078 | } | |
3079 | ||
dee91e82 | 3080 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3081 | |
dee91e82 DE |
3082 | static void |
3083 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3084 | const gdb_byte *info_ptr, |
3e225074 | 3085 | struct die_info *comp_unit_die) |
9291a0cd | 3086 | { |
dee91e82 | 3087 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3088 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
518817b3 SM |
3089 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3090 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 3091 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 3092 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3093 | struct attribute *attr; |
7b9f3c50 DE |
3094 | void **slot; |
3095 | struct quick_file_names *qfn; | |
9291a0cd | 3096 | |
0186c6a7 DE |
3097 | gdb_assert (! this_cu->is_debug_types); |
3098 | ||
07261596 TT |
3099 | /* Our callers never want to match partial units -- instead they |
3100 | will match the enclosing full CU. */ | |
3101 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3102 | { | |
3103 | this_cu->v.quick->no_file_data = 1; | |
3104 | return; | |
3105 | } | |
3106 | ||
0186c6a7 | 3107 | lh_cu = this_cu; |
7b9f3c50 | 3108 | slot = NULL; |
dee91e82 | 3109 | |
fff8551c | 3110 | line_header_up lh; |
9c541725 | 3111 | sect_offset line_offset {}; |
fff8551c | 3112 | |
dee91e82 | 3113 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
435d3d88 | 3114 | if (attr != nullptr) |
9291a0cd | 3115 | { |
7b9f3c50 DE |
3116 | struct quick_file_names find_entry; |
3117 | ||
9c541725 | 3118 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
3119 | |
3120 | /* We may have already read in this line header (TU line header sharing). | |
3121 | If we have we're done. */ | |
094b34ac | 3122 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3123 | find_entry.hash.line_sect_off = line_offset; |
5895093f | 3124 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table.get (), |
7b9f3c50 DE |
3125 | &find_entry, INSERT); |
3126 | if (*slot != NULL) | |
3127 | { | |
9a3c8263 | 3128 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3129 | return; |
7b9f3c50 DE |
3130 | } |
3131 | ||
3019eac3 | 3132 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3133 | } |
3134 | if (lh == NULL) | |
3135 | { | |
094b34ac | 3136 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3137 | return; |
9291a0cd TT |
3138 | } |
3139 | ||
8d749320 | 3140 | qfn = XOBNEW (&objfile->objfile_obstack, struct quick_file_names); |
094b34ac | 3141 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3142 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3143 | gdb_assert (slot != NULL); |
3144 | *slot = qfn; | |
9291a0cd | 3145 | |
d721ba37 | 3146 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3147 | |
aa391654 TT |
3148 | int offset = 0; |
3149 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3150 | ++offset; | |
3151 | ||
7ba99d21 | 3152 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3153 | qfn->file_names = |
aa391654 TT |
3154 | XOBNEWVEC (&objfile->objfile_obstack, const char *, qfn->num_file_names); |
3155 | if (offset != 0) | |
3156 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3157 | for (int i = 0; i < lh->file_names_size (); ++i) |
03075812 TT |
3158 | qfn->file_names[i + offset] = lh->file_full_name (i + 1, |
3159 | fnd.comp_dir).release (); | |
7b9f3c50 | 3160 | qfn->real_names = NULL; |
9291a0cd | 3161 | |
094b34ac | 3162 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3163 | } |
3164 | ||
3165 | /* A helper for the "quick" functions which attempts to read the line | |
3166 | table for THIS_CU. */ | |
3167 | ||
3168 | static struct quick_file_names * | |
e4a48d9d | 3169 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3170 | { |
0186c6a7 DE |
3171 | /* This should never be called for TUs. */ |
3172 | gdb_assert (! this_cu->is_debug_types); | |
3173 | /* Nor type unit groups. */ | |
197400e8 | 3174 | gdb_assert (! this_cu->type_unit_group_p ()); |
f4dc4d17 | 3175 | |
dee91e82 DE |
3176 | if (this_cu->v.quick->file_names != NULL) |
3177 | return this_cu->v.quick->file_names; | |
3178 | /* If we know there is no line data, no point in looking again. */ | |
3179 | if (this_cu->v.quick->no_file_data) | |
3180 | return NULL; | |
3181 | ||
c0ab21c2 TT |
3182 | cutu_reader reader (this_cu); |
3183 | if (!reader.dummy_p) | |
3e225074 | 3184 | dw2_get_file_names_reader (&reader, reader.info_ptr, reader.comp_unit_die); |
dee91e82 DE |
3185 | |
3186 | if (this_cu->v.quick->no_file_data) | |
3187 | return NULL; | |
3188 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3189 | } |
3190 | ||
3191 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3192 | real path for a given file name from the line table. */ |
2fdf6df6 | 3193 | |
9291a0cd | 3194 | static const char * |
7b9f3c50 DE |
3195 | dw2_get_real_path (struct objfile *objfile, |
3196 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3197 | { |
7b9f3c50 DE |
3198 | if (qfn->real_names == NULL) |
3199 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 3200 | qfn->num_file_names, const char *); |
9291a0cd | 3201 | |
7b9f3c50 | 3202 | if (qfn->real_names[index] == NULL) |
14278e1f | 3203 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3204 | |
7b9f3c50 | 3205 | return qfn->real_names[index]; |
9291a0cd TT |
3206 | } |
3207 | ||
3208 | static struct symtab * | |
3209 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3210 | { | |
ed2dc618 SM |
3211 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3212 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3213 | dwarf2_per_cu_data *dwarf_cu = dwarf2_per_objfile->all_comp_units.back (); |
58f0c718 | 3214 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, false); |
ae2de4f8 | 3215 | |
43f3e411 DE |
3216 | if (cust == NULL) |
3217 | return NULL; | |
ed2dc618 | 3218 | |
43f3e411 | 3219 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3220 | } |
3221 | ||
7b9f3c50 DE |
3222 | /* Traversal function for dw2_forget_cached_source_info. */ |
3223 | ||
3224 | static int | |
3225 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3226 | { |
7b9f3c50 | 3227 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3228 | |
7b9f3c50 | 3229 | if (file_data->real_names) |
9291a0cd | 3230 | { |
7b9f3c50 | 3231 | int i; |
9291a0cd | 3232 | |
7b9f3c50 | 3233 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3234 | { |
7b9f3c50 DE |
3235 | xfree ((void*) file_data->real_names[i]); |
3236 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3237 | } |
3238 | } | |
7b9f3c50 DE |
3239 | |
3240 | return 1; | |
3241 | } | |
3242 | ||
3243 | static void | |
3244 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3245 | { | |
ed2dc618 SM |
3246 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3247 | = get_dwarf2_per_objfile (objfile); | |
7b9f3c50 | 3248 | |
5895093f | 3249 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table.get (), |
7b9f3c50 | 3250 | dw2_free_cached_file_names, NULL); |
9291a0cd TT |
3251 | } |
3252 | ||
f8eba3c6 TT |
3253 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3254 | the symtabs and calls the iterator. */ | |
3255 | ||
3256 | static int | |
3257 | dw2_map_expand_apply (struct objfile *objfile, | |
3258 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3259 | const char *name, const char *real_path, |
14bc53a8 | 3260 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3261 | { |
43f3e411 | 3262 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3263 | |
3264 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 3265 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
3266 | return 0; |
3267 | ||
3268 | /* This may expand more than one symtab, and we want to iterate over | |
3269 | all of them. */ | |
58f0c718 | 3270 | dw2_instantiate_symtab (per_cu, false); |
f8eba3c6 | 3271 | |
14bc53a8 PA |
3272 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3273 | last_made, callback); | |
f8eba3c6 TT |
3274 | } |
3275 | ||
3276 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3277 | ||
14bc53a8 PA |
3278 | static bool |
3279 | dw2_map_symtabs_matching_filename | |
3280 | (struct objfile *objfile, const char *name, const char *real_path, | |
3281 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3282 | { |
c011a4f4 | 3283 | const char *name_basename = lbasename (name); |
ed2dc618 SM |
3284 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3285 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 3286 | |
848e3e78 DE |
3287 | /* The rule is CUs specify all the files, including those used by |
3288 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3289 | |
b76e467d | 3290 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 3291 | { |
3d7bb9d9 | 3292 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3293 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3294 | continue; |
3295 | ||
b76e467d | 3296 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3297 | if (file_data == NULL) |
9291a0cd TT |
3298 | continue; |
3299 | ||
b76e467d | 3300 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3301 | { |
7b9f3c50 | 3302 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3303 | const char *this_real_name; |
9291a0cd | 3304 | |
af529f8f | 3305 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3306 | { |
f5b95b50 | 3307 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3308 | callback)) |
3309 | return true; | |
288e77a7 | 3310 | continue; |
4aac40c8 | 3311 | } |
9291a0cd | 3312 | |
c011a4f4 DE |
3313 | /* Before we invoke realpath, which can get expensive when many |
3314 | files are involved, do a quick comparison of the basenames. */ | |
3315 | if (! basenames_may_differ | |
3316 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3317 | continue; | |
3318 | ||
da235a7c JK |
3319 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3320 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3321 | { |
da235a7c | 3322 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3323 | callback)) |
3324 | return true; | |
288e77a7 | 3325 | continue; |
da235a7c | 3326 | } |
9291a0cd | 3327 | |
da235a7c JK |
3328 | if (real_path != NULL) |
3329 | { | |
af529f8f JK |
3330 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3331 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3332 | if (this_real_name != NULL |
af529f8f | 3333 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3334 | { |
f5b95b50 | 3335 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3336 | callback)) |
3337 | return true; | |
288e77a7 | 3338 | continue; |
9291a0cd TT |
3339 | } |
3340 | } | |
3341 | } | |
3342 | } | |
3343 | ||
14bc53a8 | 3344 | return false; |
9291a0cd TT |
3345 | } |
3346 | ||
da51c347 DE |
3347 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3348 | ||
3349 | struct dw2_symtab_iterator | |
9291a0cd | 3350 | { |
ed2dc618 SM |
3351 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
3352 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
2b79f376 SM |
3353 | /* If set, only look for symbols that match that block. Valid values are |
3354 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3355 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3356 | /* The kind of symbol we're looking for. */ |
3357 | domain_enum domain; | |
3358 | /* The list of CUs from the index entry of the symbol, | |
3359 | or NULL if not found. */ | |
3360 | offset_type *vec; | |
3361 | /* The next element in VEC to look at. */ | |
3362 | int next; | |
3363 | /* The number of elements in VEC, or zero if there is no match. */ | |
3364 | int length; | |
8943b874 DE |
3365 | /* Have we seen a global version of the symbol? |
3366 | If so we can ignore all further global instances. | |
3367 | This is to work around gold/15646, inefficient gold-generated | |
3368 | indices. */ | |
3369 | int global_seen; | |
da51c347 | 3370 | }; |
9291a0cd | 3371 | |
2b79f376 | 3372 | /* Initialize the index symtab iterator ITER. */ |
2fdf6df6 | 3373 | |
9291a0cd | 3374 | static void |
da51c347 | 3375 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
ed2dc618 | 3376 | struct dwarf2_per_objfile *dwarf2_per_objfile, |
c7f839cb | 3377 | gdb::optional<block_enum> block_index, |
da51c347 DE |
3378 | domain_enum domain, |
3379 | const char *name) | |
3380 | { | |
ed2dc618 | 3381 | iter->dwarf2_per_objfile = dwarf2_per_objfile; |
da51c347 DE |
3382 | iter->block_index = block_index; |
3383 | iter->domain = domain; | |
3384 | iter->next = 0; | |
8943b874 | 3385 | iter->global_seen = 0; |
da51c347 | 3386 | |
3063847f | 3387 | mapped_index *index = dwarf2_per_objfile->index_table.get (); |
ed2dc618 SM |
3388 | |
3389 | /* index is NULL if OBJF_READNOW. */ | |
3390 | if (index != NULL && find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 DE |
3391 | iter->length = MAYBE_SWAP (*iter->vec); |
3392 | else | |
3393 | { | |
3394 | iter->vec = NULL; | |
3395 | iter->length = 0; | |
3396 | } | |
3397 | } | |
3398 | ||
3399 | /* Return the next matching CU or NULL if there are no more. */ | |
3400 | ||
3401 | static struct dwarf2_per_cu_data * | |
3402 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3403 | { | |
ed2dc618 SM |
3404 | struct dwarf2_per_objfile *dwarf2_per_objfile = iter->dwarf2_per_objfile; |
3405 | ||
da51c347 DE |
3406 | for ( ; iter->next < iter->length; ++iter->next) |
3407 | { | |
3408 | offset_type cu_index_and_attrs = | |
3409 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3410 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3411 | gdb_index_symbol_kind symbol_kind = |
3412 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3413 | /* Only check the symbol attributes if they're present. | |
3414 | Indices prior to version 7 don't record them, | |
3415 | and indices >= 7 may elide them for certain symbols | |
3416 | (gold does this). */ | |
3417 | int attrs_valid = | |
ed2dc618 | 3418 | (dwarf2_per_objfile->index_table->version >= 7 |
da51c347 DE |
3419 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3420 | ||
3190f0c6 | 3421 | /* Don't crash on bad data. */ |
b76e467d | 3422 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 3423 | + dwarf2_per_objfile->all_type_units.size ())) |
3190f0c6 | 3424 | { |
b98664d3 | 3425 | complaint (_(".gdb_index entry has bad CU index" |
4262abfb JK |
3426 | " [in module %s]"), |
3427 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3428 | continue; |
3429 | } | |
3430 | ||
ff4c9fec | 3431 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
3190f0c6 | 3432 | |
da51c347 | 3433 | /* Skip if already read in. */ |
43f3e411 | 3434 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
3435 | continue; |
3436 | ||
8943b874 DE |
3437 | /* Check static vs global. */ |
3438 | if (attrs_valid) | |
3439 | { | |
2b79f376 SM |
3440 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3441 | ||
3442 | if (iter->block_index.has_value ()) | |
3443 | { | |
3444 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3445 | ||
3446 | if (is_static != want_static) | |
3447 | continue; | |
3448 | } | |
3449 | ||
8943b874 DE |
3450 | /* Work around gold/15646. */ |
3451 | if (!is_static && iter->global_seen) | |
3452 | continue; | |
3453 | if (!is_static) | |
3454 | iter->global_seen = 1; | |
3455 | } | |
da51c347 DE |
3456 | |
3457 | /* Only check the symbol's kind if it has one. */ | |
3458 | if (attrs_valid) | |
3459 | { | |
3460 | switch (iter->domain) | |
3461 | { | |
3462 | case VAR_DOMAIN: | |
3463 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3464 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3465 | /* Some types are also in VAR_DOMAIN. */ | |
3466 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3467 | continue; | |
3468 | break; | |
3469 | case STRUCT_DOMAIN: | |
3470 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3471 | continue; | |
3472 | break; | |
3473 | case LABEL_DOMAIN: | |
3474 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3475 | continue; | |
3476 | break; | |
59c35742 AB |
3477 | case MODULE_DOMAIN: |
3478 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3479 | continue; | |
3480 | break; | |
da51c347 DE |
3481 | default: |
3482 | break; | |
3483 | } | |
3484 | } | |
3485 | ||
3486 | ++iter->next; | |
3487 | return per_cu; | |
3488 | } | |
3489 | ||
3490 | return NULL; | |
3491 | } | |
3492 | ||
43f3e411 | 3493 | static struct compunit_symtab * |
c7f839cb | 3494 | dw2_lookup_symbol (struct objfile *objfile, block_enum block_index, |
da51c347 | 3495 | const char *name, domain_enum domain) |
9291a0cd | 3496 | { |
43f3e411 | 3497 | struct compunit_symtab *stab_best = NULL; |
ed2dc618 SM |
3498 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3499 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 3500 | |
b5ec771e PA |
3501 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
3502 | ||
ed2dc618 SM |
3503 | struct dw2_symtab_iterator iter; |
3504 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3505 | |
2b79f376 | 3506 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, block_index, domain, name); |
9291a0cd | 3507 | |
ed2dc618 SM |
3508 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
3509 | { | |
3510 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 3511 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
ed2dc618 | 3512 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 3513 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3514 | |
ed2dc618 SM |
3515 | sym = block_find_symbol (block, name, domain, |
3516 | block_find_non_opaque_type_preferred, | |
3517 | &with_opaque); | |
b2e2f908 | 3518 | |
ed2dc618 SM |
3519 | /* Some caution must be observed with overloaded functions |
3520 | and methods, since the index will not contain any overload | |
3521 | information (but NAME might contain it). */ | |
da51c347 | 3522 | |
ed2dc618 SM |
3523 | if (sym != NULL |
3524 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
3525 | return stab; | |
3526 | if (with_opaque != NULL | |
3527 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
3528 | stab_best = stab; | |
da51c347 | 3529 | |
ed2dc618 | 3530 | /* Keep looking through other CUs. */ |
9291a0cd | 3531 | } |
9291a0cd | 3532 | |
da51c347 | 3533 | return stab_best; |
9291a0cd TT |
3534 | } |
3535 | ||
3536 | static void | |
3537 | dw2_print_stats (struct objfile *objfile) | |
3538 | { | |
ed2dc618 SM |
3539 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3540 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3541 | int total = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 3542 | + dwarf2_per_objfile->all_type_units.size ()); |
ed2dc618 | 3543 | int count = 0; |
9291a0cd | 3544 | |
ed2dc618 | 3545 | for (int i = 0; i < total; ++i) |
9291a0cd | 3546 | { |
ff4c9fec | 3547 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 3548 | |
43f3e411 | 3549 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3550 | ++count; |
3551 | } | |
e4a48d9d | 3552 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3553 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3554 | } | |
3555 | ||
779bd270 DE |
3556 | /* This dumps minimal information about the index. |
3557 | It is called via "mt print objfiles". | |
3558 | One use is to verify .gdb_index has been loaded by the | |
3559 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3560 | ||
9291a0cd TT |
3561 | static void |
3562 | dw2_dump (struct objfile *objfile) | |
3563 | { | |
ed2dc618 SM |
3564 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3565 | = get_dwarf2_per_objfile (objfile); | |
3566 | ||
779bd270 DE |
3567 | gdb_assert (dwarf2_per_objfile->using_index); |
3568 | printf_filtered (".gdb_index:"); | |
3569 | if (dwarf2_per_objfile->index_table != NULL) | |
3570 | { | |
3571 | printf_filtered (" version %d\n", | |
3572 | dwarf2_per_objfile->index_table->version); | |
3573 | } | |
3574 | else | |
3575 | printf_filtered (" faked for \"readnow\"\n"); | |
3576 | printf_filtered ("\n"); | |
9291a0cd TT |
3577 | } |
3578 | ||
9291a0cd TT |
3579 | static void |
3580 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3581 | const char *func_name) | |
3582 | { | |
ed2dc618 SM |
3583 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3584 | = get_dwarf2_per_objfile (objfile); | |
da51c347 | 3585 | |
ed2dc618 SM |
3586 | struct dw2_symtab_iterator iter; |
3587 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3588 | |
2b79f376 | 3589 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, {}, VAR_DOMAIN, func_name); |
da51c347 | 3590 | |
ed2dc618 | 3591 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
58f0c718 | 3592 | dw2_instantiate_symtab (per_cu, false); |
da51c347 | 3593 | |
9291a0cd TT |
3594 | } |
3595 | ||
3596 | static void | |
3597 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3598 | { | |
ed2dc618 SM |
3599 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3600 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3601 | int total_units = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 3602 | + dwarf2_per_objfile->all_type_units.size ()); |
9291a0cd | 3603 | |
ed2dc618 | 3604 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 3605 | { |
ff4c9fec | 3606 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 3607 | |
58f0c718 TT |
3608 | /* We don't want to directly expand a partial CU, because if we |
3609 | read it with the wrong language, then assertion failures can | |
3610 | be triggered later on. See PR symtab/23010. So, tell | |
3611 | dw2_instantiate_symtab to skip partial CUs -- any important | |
3612 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
3613 | dw2_instantiate_symtab (per_cu, true); | |
9291a0cd TT |
3614 | } |
3615 | } | |
3616 | ||
3617 | static void | |
652a8996 JK |
3618 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3619 | const char *fullname) | |
9291a0cd | 3620 | { |
ed2dc618 SM |
3621 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3622 | = get_dwarf2_per_objfile (objfile); | |
d4637a04 DE |
3623 | |
3624 | /* We don't need to consider type units here. | |
3625 | This is only called for examining code, e.g. expand_line_sal. | |
3626 | There can be an order of magnitude (or more) more type units | |
3627 | than comp units, and we avoid them if we can. */ | |
3628 | ||
b76e467d | 3629 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 3630 | { |
3d7bb9d9 | 3631 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3632 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3633 | continue; |
3634 | ||
b76e467d | 3635 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3636 | if (file_data == NULL) |
9291a0cd TT |
3637 | continue; |
3638 | ||
b76e467d | 3639 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3640 | { |
652a8996 JK |
3641 | const char *this_fullname = file_data->file_names[j]; |
3642 | ||
3643 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3644 | { |
58f0c718 | 3645 | dw2_instantiate_symtab (per_cu, false); |
9291a0cd TT |
3646 | break; |
3647 | } | |
3648 | } | |
3649 | } | |
3650 | } | |
3651 | ||
9291a0cd | 3652 | static void |
199b4314 TT |
3653 | dw2_map_matching_symbols |
3654 | (struct objfile *objfile, | |
b054970d | 3655 | const lookup_name_info &name, domain_enum domain, |
199b4314 TT |
3656 | int global, |
3657 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 3658 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 3659 | { |
1aa98955 TV |
3660 | /* Used for Ada. */ |
3661 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
3662 | = get_dwarf2_per_objfile (objfile); | |
3663 | ||
3664 | if (dwarf2_per_objfile->index_table != nullptr) | |
3665 | { | |
3666 | /* Ada currently doesn't support .gdb_index (see PR24713). We can get | |
3667 | here though if the current language is Ada for a non-Ada objfile | |
3668 | using GNU index. As Ada does not look for non-Ada symbols this | |
3669 | function should just return. */ | |
3670 | return; | |
3671 | } | |
3672 | ||
3673 | /* We have -readnow: no .gdb_index, but no partial symtabs either. So, | |
3674 | inline psym_map_matching_symbols here, assuming all partial symtabs have | |
3675 | been read in. */ | |
3676 | const int block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; | |
3677 | ||
3678 | for (compunit_symtab *cust : objfile->compunits ()) | |
3679 | { | |
3680 | const struct block *block; | |
3681 | ||
3682 | if (cust == NULL) | |
3683 | continue; | |
3684 | block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
3685 | if (!iterate_over_symbols_terminated (block, name, | |
3686 | domain, callback)) | |
3687 | return; | |
3688 | } | |
9291a0cd TT |
3689 | } |
3690 | ||
e1ef7d7a PA |
3691 | /* Starting from a search name, return the string that finds the upper |
3692 | bound of all strings that start with SEARCH_NAME in a sorted name | |
3693 | list. Returns the empty string to indicate that the upper bound is | |
3694 | the end of the list. */ | |
3695 | ||
3696 | static std::string | |
3697 | make_sort_after_prefix_name (const char *search_name) | |
3698 | { | |
3699 | /* When looking to complete "func", we find the upper bound of all | |
3700 | symbols that start with "func" by looking for where we'd insert | |
3701 | the closest string that would follow "func" in lexicographical | |
3702 | order. Usually, that's "func"-with-last-character-incremented, | |
3703 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
3704 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
3705 | Especially mind the 0xff character, which is a valid character in | |
3706 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
3707 | rule out compilers allowing it in identifiers. Note that | |
3708 | conveniently, strcmp/strcasecmp are specified to compare | |
3709 | characters interpreted as unsigned char. So what we do is treat | |
3710 | the whole string as a base 256 number composed of a sequence of | |
3711 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
3712 | to 0, and carries 1 to the following more-significant position. | |
3713 | If the very first character in SEARCH_NAME ends up incremented | |
3714 | and carries/overflows, then the upper bound is the end of the | |
3715 | list. The string after the empty string is also the empty | |
3716 | string. | |
3717 | ||
3718 | Some examples of this operation: | |
3719 | ||
3720 | SEARCH_NAME => "+1" RESULT | |
3721 | ||
3722 | "abc" => "abd" | |
3723 | "ab\xff" => "ac" | |
3724 | "\xff" "a" "\xff" => "\xff" "b" | |
3725 | "\xff" => "" | |
3726 | "\xff\xff" => "" | |
3727 | "" => "" | |
3728 | ||
3729 | Then, with these symbols for example: | |
3730 | ||
3731 | func | |
3732 | func1 | |
3733 | fund | |
3734 | ||
3735 | completing "func" looks for symbols between "func" and | |
3736 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
3737 | which finds "func" and "func1", but not "fund". | |
3738 | ||
3739 | And with: | |
3740 | ||
3741 | funcÿ (Latin1 'ÿ' [0xff]) | |
3742 | funcÿ1 | |
3743 | fund | |
3744 | ||
3745 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
3746 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
3747 | ||
3748 | And with: | |
3749 | ||
3750 | ÿÿ (Latin1 'ÿ' [0xff]) | |
3751 | ÿÿ1 | |
3752 | ||
3753 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
3754 | the end of the list. | |
3755 | */ | |
3756 | std::string after = search_name; | |
3757 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
3758 | after.pop_back (); | |
3759 | if (!after.empty ()) | |
3760 | after.back () = (unsigned char) after.back () + 1; | |
3761 | return after; | |
3762 | } | |
3763 | ||
5c58de74 | 3764 | /* See declaration. */ |
61d96d7e | 3765 | |
5c58de74 PA |
3766 | std::pair<std::vector<name_component>::const_iterator, |
3767 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 3768 | mapped_index_base::find_name_components_bounds |
3b00ef10 | 3769 | (const lookup_name_info &lookup_name_without_params, language lang) const |
3f563c84 | 3770 | { |
5c58de74 PA |
3771 | auto *name_cmp |
3772 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 3773 | |
3b00ef10 | 3774 | const char *lang_name |
e0802d59 | 3775 | = lookup_name_without_params.language_lookup_name (lang); |
9291a0cd | 3776 | |
3f563c84 PA |
3777 | /* Comparison function object for lower_bound that matches against a |
3778 | given symbol name. */ | |
3779 | auto lookup_compare_lower = [&] (const name_component &elem, | |
3780 | const char *name) | |
3781 | { | |
5c58de74 | 3782 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
3783 | const char *elem_name = elem_qualified + elem.name_offset; |
3784 | return name_cmp (elem_name, name) < 0; | |
3785 | }; | |
3786 | ||
3787 | /* Comparison function object for upper_bound that matches against a | |
3788 | given symbol name. */ | |
3789 | auto lookup_compare_upper = [&] (const char *name, | |
3790 | const name_component &elem) | |
3791 | { | |
5c58de74 | 3792 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
3793 | const char *elem_name = elem_qualified + elem.name_offset; |
3794 | return name_cmp (name, elem_name) < 0; | |
3795 | }; | |
3796 | ||
5c58de74 PA |
3797 | auto begin = this->name_components.begin (); |
3798 | auto end = this->name_components.end (); | |
3f563c84 PA |
3799 | |
3800 | /* Find the lower bound. */ | |
3801 | auto lower = [&] () | |
3802 | { | |
3b00ef10 | 3803 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
3804 | return begin; |
3805 | else | |
3b00ef10 | 3806 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
3807 | } (); |
3808 | ||
3809 | /* Find the upper bound. */ | |
3810 | auto upper = [&] () | |
3811 | { | |
5c58de74 | 3812 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 3813 | { |
e1ef7d7a PA |
3814 | /* In completion mode, we want UPPER to point past all |
3815 | symbols names that have the same prefix. I.e., with | |
3816 | these symbols, and completing "func": | |
3817 | ||
3818 | function << lower bound | |
3819 | function1 | |
3820 | other_function << upper bound | |
3821 | ||
3822 | We find the upper bound by looking for the insertion | |
3823 | point of "func"-with-last-character-incremented, | |
3824 | i.e. "fund". */ | |
3b00ef10 | 3825 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 3826 | if (after.empty ()) |
3f563c84 | 3827 | return end; |
e6b2f5ef PA |
3828 | return std::lower_bound (lower, end, after.c_str (), |
3829 | lookup_compare_lower); | |
3f563c84 PA |
3830 | } |
3831 | else | |
3b00ef10 | 3832 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
3833 | } (); |
3834 | ||
5c58de74 PA |
3835 | return {lower, upper}; |
3836 | } | |
3837 | ||
3838 | /* See declaration. */ | |
3839 | ||
3840 | void | |
44ed8f3e | 3841 | mapped_index_base::build_name_components () |
5c58de74 PA |
3842 | { |
3843 | if (!this->name_components.empty ()) | |
3844 | return; | |
3845 | ||
3846 | this->name_components_casing = case_sensitivity; | |
3847 | auto *name_cmp | |
3848 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3849 | ||
3850 | /* The code below only knows how to break apart components of C++ | |
3851 | symbol names (and other languages that use '::' as | |
3b00ef10 | 3852 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
3853 | auto count = this->symbol_name_count (); |
3854 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 3855 | { |
44ed8f3e | 3856 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
3857 | continue; |
3858 | ||
3859 | const char *name = this->symbol_name_at (idx); | |
3860 | ||
3861 | /* Add each name component to the name component table. */ | |
3862 | unsigned int previous_len = 0; | |
3b00ef10 TT |
3863 | |
3864 | if (strstr (name, "::") != nullptr) | |
3865 | { | |
3866 | for (unsigned int current_len = cp_find_first_component (name); | |
3867 | name[current_len] != '\0'; | |
3868 | current_len += cp_find_first_component (name + current_len)) | |
3869 | { | |
3870 | gdb_assert (name[current_len] == ':'); | |
3871 | this->name_components.push_back ({previous_len, idx}); | |
3872 | /* Skip the '::'. */ | |
3873 | current_len += 2; | |
3874 | previous_len = current_len; | |
3875 | } | |
3876 | } | |
3877 | else | |
5c58de74 | 3878 | { |
3b00ef10 TT |
3879 | /* Handle the Ada encoded (aka mangled) form here. */ |
3880 | for (const char *iter = strstr (name, "__"); | |
3881 | iter != nullptr; | |
3882 | iter = strstr (iter, "__")) | |
3883 | { | |
3884 | this->name_components.push_back ({previous_len, idx}); | |
3885 | iter += 2; | |
3886 | previous_len = iter - name; | |
3887 | } | |
5c58de74 | 3888 | } |
3b00ef10 | 3889 | |
5c58de74 PA |
3890 | this->name_components.push_back ({previous_len, idx}); |
3891 | } | |
3892 | ||
3893 | /* Sort name_components elements by name. */ | |
3894 | auto name_comp_compare = [&] (const name_component &left, | |
3895 | const name_component &right) | |
3896 | { | |
3897 | const char *left_qualified = this->symbol_name_at (left.idx); | |
3898 | const char *right_qualified = this->symbol_name_at (right.idx); | |
3899 | ||
3900 | const char *left_name = left_qualified + left.name_offset; | |
3901 | const char *right_name = right_qualified + right.name_offset; | |
3902 | ||
3903 | return name_cmp (left_name, right_name) < 0; | |
3904 | }; | |
3905 | ||
3906 | std::sort (this->name_components.begin (), | |
3907 | this->name_components.end (), | |
3908 | name_comp_compare); | |
3909 | } | |
3910 | ||
3911 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
3912 | mapped_index_base instead of the containing objfile. This is split |
3913 | to a separate function in order to be able to unit test the | |
3914 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 3915 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 3916 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
3917 | |
3918 | static void | |
3919 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 3920 | (mapped_index_base &index, |
5c58de74 PA |
3921 | const lookup_name_info &lookup_name_in, |
3922 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
3923 | enum search_domain kind, | |
3b00ef10 | 3924 | gdb::function_view<bool (offset_type)> match_callback) |
5c58de74 PA |
3925 | { |
3926 | lookup_name_info lookup_name_without_params | |
3927 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
3928 | |
3929 | /* Build the symbol name component sorted vector, if we haven't | |
3930 | yet. */ | |
3931 | index.build_name_components (); | |
3932 | ||
3f563c84 PA |
3933 | /* The same symbol may appear more than once in the range though. |
3934 | E.g., if we're looking for symbols that complete "w", and we have | |
3935 | a symbol named "w1::w2", we'll find the two name components for | |
3936 | that same symbol in the range. To be sure we only call the | |
3937 | callback once per symbol, we first collect the symbol name | |
3938 | indexes that matched in a temporary vector and ignore | |
3939 | duplicates. */ | |
3940 | std::vector<offset_type> matches; | |
3f563c84 | 3941 | |
3b00ef10 TT |
3942 | struct name_and_matcher |
3943 | { | |
3944 | symbol_name_matcher_ftype *matcher; | |
ecc6c606 | 3945 | const char *name; |
3b00ef10 TT |
3946 | |
3947 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 3948 | { |
ecc6c606 | 3949 | return matcher == other.matcher && strcmp (name, other.name) == 0; |
3b00ef10 TT |
3950 | } |
3951 | }; | |
3952 | ||
3953 | /* A vector holding all the different symbol name matchers, for all | |
3954 | languages. */ | |
3955 | std::vector<name_and_matcher> matchers; | |
3956 | ||
3957 | for (int i = 0; i < nr_languages; i++) | |
3958 | { | |
3959 | enum language lang_e = (enum language) i; | |
3960 | ||
3961 | const language_defn *lang = language_def (lang_e); | |
3962 | symbol_name_matcher_ftype *name_matcher | |
3963 | = get_symbol_name_matcher (lang, lookup_name_without_params); | |
3f563c84 | 3964 | |
3b00ef10 TT |
3965 | name_and_matcher key { |
3966 | name_matcher, | |
3967 | lookup_name_without_params.language_lookup_name (lang_e) | |
3968 | }; | |
3969 | ||
3970 | /* Don't insert the same comparison routine more than once. | |
3971 | Note that we do this linear walk. This is not a problem in | |
3972 | practice because the number of supported languages is | |
3973 | low. */ | |
3974 | if (std::find (matchers.begin (), matchers.end (), key) | |
3975 | != matchers.end ()) | |
9291a0cd | 3976 | continue; |
3b00ef10 TT |
3977 | matchers.push_back (std::move (key)); |
3978 | ||
3979 | auto bounds | |
3980 | = index.find_name_components_bounds (lookup_name_without_params, | |
3981 | lang_e); | |
3982 | ||
3983 | /* Now for each symbol name in range, check to see if we have a name | |
3984 | match, and if so, call the MATCH_CALLBACK callback. */ | |
3985 | ||
3986 | for (; bounds.first != bounds.second; ++bounds.first) | |
3987 | { | |
3988 | const char *qualified = index.symbol_name_at (bounds.first->idx); | |
3989 | ||
3990 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
3991 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
3992 | continue; | |
9291a0cd | 3993 | |
3b00ef10 TT |
3994 | matches.push_back (bounds.first->idx); |
3995 | } | |
3f563c84 PA |
3996 | } |
3997 | ||
3998 | std::sort (matches.begin (), matches.end ()); | |
3999 | ||
4000 | /* Finally call the callback, once per match. */ | |
4001 | ULONGEST prev = -1; | |
4002 | for (offset_type idx : matches) | |
4003 | { | |
4004 | if (prev != idx) | |
4005 | { | |
3b00ef10 TT |
4006 | if (!match_callback (idx)) |
4007 | break; | |
3f563c84 PA |
4008 | prev = idx; |
4009 | } | |
4010 | } | |
4011 | ||
4012 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4013 | (offset_type)-1 are both possible values. */ | |
4014 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4015 | } | |
4016 | ||
c62446b1 PA |
4017 | #if GDB_SELF_TEST |
4018 | ||
4019 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4020 | ||
a3c5fafd PA |
4021 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4022 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4023 | mapped_index_base interface. Builds an index from the symbol list | |
4024 | passed as parameter to the constructor. */ | |
4025 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4026 | { |
4027 | public: | |
a3c5fafd PA |
4028 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4029 | : m_symbol_table (symbols) | |
c62446b1 PA |
4030 | {} |
4031 | ||
a3c5fafd | 4032 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4033 | |
a3c5fafd | 4034 | /* Return the number of names in the symbol table. */ |
632e107b | 4035 | size_t symbol_name_count () const override |
c62446b1 | 4036 | { |
a3c5fafd | 4037 | return m_symbol_table.size (); |
c62446b1 PA |
4038 | } |
4039 | ||
a3c5fafd | 4040 | /* Get the name of the symbol at IDX in the symbol table. */ |
632e107b | 4041 | const char *symbol_name_at (offset_type idx) const override |
a3c5fafd PA |
4042 | { |
4043 | return m_symbol_table[idx]; | |
4044 | } | |
c62446b1 | 4045 | |
a3c5fafd PA |
4046 | private: |
4047 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4048 | }; |
4049 | ||
4050 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4051 | string, to pass to print routines. */ | |
4052 | ||
4053 | static const char * | |
4054 | string_or_null (const char *str) | |
4055 | { | |
4056 | return str != NULL ? str : "<null>"; | |
4057 | } | |
4058 | ||
4059 | /* Check if a lookup_name_info built from | |
4060 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4061 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4062 | matching order. If no match expected, then an empty list is | |
4063 | specified. Returns true on success. On failure prints a warning | |
4064 | indicating the file:line that failed, and returns false. */ | |
4065 | ||
4066 | static bool | |
4067 | check_match (const char *file, int line, | |
4068 | mock_mapped_index &mock_index, | |
4069 | const char *name, symbol_name_match_type match_type, | |
4070 | bool completion_mode, | |
4071 | std::initializer_list<const char *> expected_list) | |
4072 | { | |
4073 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4074 | ||
4075 | bool matched = true; | |
4076 | ||
4077 | auto mismatch = [&] (const char *expected_str, | |
4078 | const char *got) | |
4079 | { | |
4080 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4081 | "expected=\"%s\", got=\"%s\"\n"), | |
4082 | file, line, | |
4083 | (match_type == symbol_name_match_type::FULL | |
4084 | ? "FULL" : "WILD"), | |
4085 | name, string_or_null (expected_str), string_or_null (got)); | |
4086 | matched = false; | |
4087 | }; | |
4088 | ||
4089 | auto expected_it = expected_list.begin (); | |
4090 | auto expected_end = expected_list.end (); | |
4091 | ||
a3c5fafd | 4092 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4093 | NULL, ALL_DOMAIN, |
4094 | [&] (offset_type idx) | |
4095 | { | |
a3c5fafd | 4096 | const char *matched_name = mock_index.symbol_name_at (idx); |
c62446b1 PA |
4097 | const char *expected_str |
4098 | = expected_it == expected_end ? NULL : *expected_it++; | |
4099 | ||
4100 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4101 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4102 | return true; |
c62446b1 PA |
4103 | }); |
4104 | ||
4105 | const char *expected_str | |
4106 | = expected_it == expected_end ? NULL : *expected_it++; | |
4107 | if (expected_str != NULL) | |
4108 | mismatch (expected_str, NULL); | |
4109 | ||
4110 | return matched; | |
4111 | } | |
4112 | ||
4113 | /* The symbols added to the mock mapped_index for testing (in | |
4114 | canonical form). */ | |
4115 | static const char *test_symbols[] = { | |
4116 | "function", | |
4117 | "std::bar", | |
4118 | "std::zfunction", | |
4119 | "std::zfunction2", | |
4120 | "w1::w2", | |
4121 | "ns::foo<char*>", | |
4122 | "ns::foo<int>", | |
4123 | "ns::foo<long>", | |
a20714ff PA |
4124 | "ns2::tmpl<int>::foo2", |
4125 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4126 | |
e1ef7d7a PA |
4127 | /* These are used to check that the increment-last-char in the |
4128 | matching algorithm for completion doesn't match "t1_fund" when | |
4129 | completing "t1_func". */ | |
4130 | "t1_func", | |
4131 | "t1_func1", | |
4132 | "t1_fund", | |
4133 | "t1_fund1", | |
4134 | ||
4135 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4136 | cp-name-parser understands this as a single identifier ("função" | |
4137 | is "function" in PT). */ | |
4138 | u8"u8função", | |
4139 | ||
4140 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4141 | "yfunc\377", | |
4142 | ||
4143 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4144 | "\377", | |
4145 | "\377\377123", | |
4146 | ||
c62446b1 PA |
4147 | /* A name with all sorts of complications. Starts with "z" to make |
4148 | it easier for the completion tests below. */ | |
4149 | #define Z_SYM_NAME \ | |
4150 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4151 | "::tuple<(anonymous namespace)::ui*, " \ | |
4152 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4153 | ||
4154 | Z_SYM_NAME | |
4155 | }; | |
4156 | ||
a3c5fafd PA |
4157 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4158 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4159 | in completion mode. */ | |
5c58de74 PA |
4160 | |
4161 | static bool | |
a3c5fafd | 4162 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 PA |
4163 | const char *search_name, |
4164 | gdb::array_view<const char *> expected_syms) | |
4165 | { | |
4166 | lookup_name_info lookup_name (search_name, | |
4167 | symbol_name_match_type::FULL, true); | |
4168 | ||
3b00ef10 TT |
4169 | auto bounds = index.find_name_components_bounds (lookup_name, |
4170 | language_cplus); | |
5c58de74 PA |
4171 | |
4172 | size_t distance = std::distance (bounds.first, bounds.second); | |
4173 | if (distance != expected_syms.size ()) | |
4174 | return false; | |
4175 | ||
4176 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4177 | { | |
4178 | auto nc_elem = bounds.first + exp_elem; | |
4179 | const char *qualified = index.symbol_name_at (nc_elem->idx); | |
4180 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) | |
4181 | return false; | |
4182 | } | |
4183 | ||
4184 | return true; | |
4185 | } | |
4186 | ||
4187 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4188 | method. */ | |
4189 | ||
c62446b1 | 4190 | static void |
5c58de74 PA |
4191 | test_mapped_index_find_name_component_bounds () |
4192 | { | |
4193 | mock_mapped_index mock_index (test_symbols); | |
4194 | ||
a3c5fafd | 4195 | mock_index.build_name_components (); |
5c58de74 PA |
4196 | |
4197 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4198 | method in completion mode. */ | |
4199 | { | |
4200 | static const char *expected_syms[] = { | |
4201 | "t1_func", | |
4202 | "t1_func1", | |
5c58de74 PA |
4203 | }; |
4204 | ||
a3c5fafd | 4205 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4206 | "t1_func", expected_syms)); |
4207 | } | |
4208 | ||
4209 | /* Check that the increment-last-char in the name matching algorithm | |
4210 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4211 | { | |
4212 | static const char *expected_syms1[] = { | |
4213 | "\377", | |
4214 | "\377\377123", | |
4215 | }; | |
a3c5fafd | 4216 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4217 | "\377", expected_syms1)); |
4218 | ||
4219 | static const char *expected_syms2[] = { | |
4220 | "\377\377123", | |
4221 | }; | |
a3c5fafd | 4222 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4223 | "\377\377", expected_syms2)); |
4224 | } | |
4225 | } | |
4226 | ||
4227 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4228 | ||
4229 | static void | |
4230 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4231 | { |
4232 | mock_mapped_index mock_index (test_symbols); | |
4233 | ||
4234 | /* We let all tests run until the end even if some fails, for debug | |
4235 | convenience. */ | |
4236 | bool any_mismatch = false; | |
4237 | ||
4238 | /* Create the expected symbols list (an initializer_list). Needed | |
4239 | because lists have commas, and we need to pass them to CHECK, | |
4240 | which is a macro. */ | |
4241 | #define EXPECT(...) { __VA_ARGS__ } | |
4242 | ||
4243 | /* Wrapper for check_match that passes down the current | |
4244 | __FILE__/__LINE__. */ | |
4245 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4246 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4247 | mock_index, \ | |
4248 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
4249 | EXPECTED_LIST) | |
4250 | ||
4251 | /* Identity checks. */ | |
4252 | for (const char *sym : test_symbols) | |
4253 | { | |
4254 | /* Should be able to match all existing symbols. */ | |
4255 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4256 | EXPECT (sym)); | |
4257 | ||
4258 | /* Should be able to match all existing symbols with | |
4259 | parameters. */ | |
4260 | std::string with_params = std::string (sym) + "(int)"; | |
4261 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4262 | EXPECT (sym)); | |
4263 | ||
4264 | /* Should be able to match all existing symbols with | |
4265 | parameters and qualifiers. */ | |
4266 | with_params = std::string (sym) + " ( int ) const"; | |
4267 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4268 | EXPECT (sym)); | |
4269 | ||
4270 | /* This should really find sym, but cp-name-parser.y doesn't | |
4271 | know about lvalue/rvalue qualifiers yet. */ | |
4272 | with_params = std::string (sym) + " ( int ) &&"; | |
4273 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4274 | {}); | |
4275 | } | |
4276 | ||
e1ef7d7a PA |
4277 | /* Check that the name matching algorithm for completion doesn't get |
4278 | confused with Latin1 'ÿ' / 0xff. */ | |
4279 | { | |
4280 | static const char str[] = "\377"; | |
4281 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4282 | EXPECT ("\377", "\377\377123")); | |
4283 | } | |
4284 | ||
4285 | /* Check that the increment-last-char in the matching algorithm for | |
4286 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4287 | { | |
4288 | static const char str[] = "t1_func"; | |
4289 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4290 | EXPECT ("t1_func", "t1_func1")); | |
4291 | } | |
4292 | ||
c62446b1 PA |
4293 | /* Check that completion mode works at each prefix of the expected |
4294 | symbol name. */ | |
4295 | { | |
4296 | static const char str[] = "function(int)"; | |
4297 | size_t len = strlen (str); | |
4298 | std::string lookup; | |
4299 | ||
4300 | for (size_t i = 1; i < len; i++) | |
4301 | { | |
4302 | lookup.assign (str, i); | |
4303 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4304 | EXPECT ("function")); | |
4305 | } | |
4306 | } | |
4307 | ||
4308 | /* While "w" is a prefix of both components, the match function | |
4309 | should still only be called once. */ | |
4310 | { | |
4311 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4312 | EXPECT ("w1::w2")); | |
a20714ff PA |
4313 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4314 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4315 | } |
4316 | ||
4317 | /* Same, with a "complicated" symbol. */ | |
4318 | { | |
4319 | static const char str[] = Z_SYM_NAME; | |
4320 | size_t len = strlen (str); | |
4321 | std::string lookup; | |
4322 | ||
4323 | for (size_t i = 1; i < len; i++) | |
4324 | { | |
4325 | lookup.assign (str, i); | |
4326 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4327 | EXPECT (Z_SYM_NAME)); | |
4328 | } | |
4329 | } | |
4330 | ||
4331 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4332 | { | |
4333 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4334 | {}); | |
4335 | } | |
4336 | ||
4337 | /* A complete symbol with parameters matches any overload, since the | |
4338 | index has no overload info. */ | |
4339 | { | |
4340 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4341 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4342 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4343 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4344 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4345 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4346 | } |
4347 | ||
4348 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4349 | template argument list. */ | |
4350 | { | |
4351 | static const char expected[] = "ns::foo<int>"; | |
4352 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4353 | EXPECT (expected)); | |
a20714ff PA |
4354 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4355 | EXPECT (expected)); | |
c62446b1 PA |
4356 | } |
4357 | ||
4358 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4359 | template argument list that includes a pointer. */ | |
4360 | { | |
4361 | static const char expected[] = "ns::foo<char*>"; | |
4362 | /* Try both completion and non-completion modes. */ | |
4363 | static const bool completion_mode[2] = {false, true}; | |
4364 | for (size_t i = 0; i < 2; i++) | |
4365 | { | |
4366 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4367 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4368 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4369 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4370 | |
4371 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4372 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4373 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4374 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4375 | } |
4376 | } | |
4377 | ||
4378 | { | |
4379 | /* Check method qualifiers are ignored. */ | |
4380 | static const char expected[] = "ns::foo<char*>"; | |
4381 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4382 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4383 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4384 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4385 | CHECK_MATCH ("foo < char * > ( int ) const", |
4386 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4387 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4388 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4389 | } |
4390 | ||
4391 | /* Test lookup names that don't match anything. */ | |
4392 | { | |
a20714ff PA |
4393 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4394 | {}); | |
4395 | ||
c62446b1 PA |
4396 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4397 | {}); | |
4398 | } | |
4399 | ||
a20714ff PA |
4400 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4401 | which should not be confused with a parameter list. */ | |
4402 | { | |
4403 | static const char *syms[] = { | |
4404 | "A::B::C", | |
4405 | "B::C", | |
4406 | "C", | |
4407 | "A :: B :: C ( int )", | |
4408 | "B :: C ( int )", | |
4409 | "C ( int )", | |
4410 | }; | |
4411 | ||
4412 | for (const char *s : syms) | |
4413 | { | |
4414 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4415 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4416 | } | |
4417 | } | |
4418 | ||
4419 | { | |
4420 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4421 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4422 | EXPECT (expected)); | |
4423 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4424 | EXPECT (expected)); | |
4425 | } | |
4426 | ||
c62446b1 PA |
4427 | SELF_CHECK (!any_mismatch); |
4428 | ||
4429 | #undef EXPECT | |
4430 | #undef CHECK_MATCH | |
4431 | } | |
4432 | ||
5c58de74 PA |
4433 | static void |
4434 | run_test () | |
4435 | { | |
4436 | test_mapped_index_find_name_component_bounds (); | |
4437 | test_dw2_expand_symtabs_matching_symbol (); | |
4438 | } | |
4439 | ||
c62446b1 PA |
4440 | }} // namespace selftests::dw2_expand_symtabs_matching |
4441 | ||
4442 | #endif /* GDB_SELF_TEST */ | |
4443 | ||
4b514bc8 JK |
4444 | /* If FILE_MATCHER is NULL or if PER_CU has |
4445 | dwarf2_per_cu_quick_data::MARK set (see | |
4446 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4447 | EXPANSION_NOTIFY on it. */ | |
4448 | ||
4449 | static void | |
4450 | dw2_expand_symtabs_matching_one | |
4451 | (struct dwarf2_per_cu_data *per_cu, | |
4452 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
4453 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4454 | { | |
4455 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4456 | { | |
4457 | bool symtab_was_null | |
4458 | = (per_cu->v.quick->compunit_symtab == NULL); | |
4459 | ||
58f0c718 | 4460 | dw2_instantiate_symtab (per_cu, false); |
4b514bc8 JK |
4461 | |
4462 | if (expansion_notify != NULL | |
4463 | && symtab_was_null | |
4464 | && per_cu->v.quick->compunit_symtab != NULL) | |
4465 | expansion_notify (per_cu->v.quick->compunit_symtab); | |
4466 | } | |
4467 | } | |
4468 | ||
3f563c84 PA |
4469 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4470 | matched, to expand corresponding CUs that were marked. IDX is the | |
4471 | index of the symbol name that matched. */ | |
4472 | ||
4473 | static void | |
4474 | dw2_expand_marked_cus | |
ed2dc618 | 4475 | (struct dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, |
3f563c84 PA |
4476 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4477 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4478 | search_domain kind) | |
4479 | { | |
3f563c84 PA |
4480 | offset_type *vec, vec_len, vec_idx; |
4481 | bool global_seen = false; | |
ed2dc618 | 4482 | mapped_index &index = *dwarf2_per_objfile->index_table; |
3f563c84 | 4483 | |
61920122 | 4484 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 4485 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
4486 | vec_len = MAYBE_SWAP (vec[0]); |
4487 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4488 | { | |
61920122 PA |
4489 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
4490 | /* This value is only valid for index versions >= 7. */ | |
4491 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4492 | gdb_index_symbol_kind symbol_kind = | |
4493 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4494 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4495 | /* Only check the symbol attributes if they're present. | |
4496 | Indices prior to version 7 don't record them, | |
4497 | and indices >= 7 may elide them for certain symbols | |
4498 | (gold does this). */ | |
4499 | int attrs_valid = | |
4500 | (index.version >= 7 | |
4501 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4502 | ||
4503 | /* Work around gold/15646. */ | |
4504 | if (attrs_valid) | |
9291a0cd | 4505 | { |
61920122 PA |
4506 | if (!is_static && global_seen) |
4507 | continue; | |
4508 | if (!is_static) | |
4509 | global_seen = true; | |
4510 | } | |
3190f0c6 | 4511 | |
61920122 PA |
4512 | /* Only check the symbol's kind if it has one. */ |
4513 | if (attrs_valid) | |
4514 | { | |
4515 | switch (kind) | |
8943b874 | 4516 | { |
61920122 PA |
4517 | case VARIABLES_DOMAIN: |
4518 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4519 | continue; | |
4520 | break; | |
4521 | case FUNCTIONS_DOMAIN: | |
4522 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4523 | continue; |
61920122 PA |
4524 | break; |
4525 | case TYPES_DOMAIN: | |
4526 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4527 | continue; | |
4528 | break; | |
59c35742 AB |
4529 | case MODULES_DOMAIN: |
4530 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4531 | continue; | |
4532 | break; | |
61920122 PA |
4533 | default: |
4534 | break; | |
8943b874 | 4535 | } |
61920122 | 4536 | } |
8943b874 | 4537 | |
61920122 | 4538 | /* Don't crash on bad data. */ |
b76e467d | 4539 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4540 | + dwarf2_per_objfile->all_type_units.size ())) |
61920122 | 4541 | { |
b98664d3 | 4542 | complaint (_(".gdb_index entry has bad CU index" |
ed2dc618 SM |
4543 | " [in module %s]"), |
4544 | objfile_name (dwarf2_per_objfile->objfile)); | |
61920122 PA |
4545 | continue; |
4546 | } | |
4547 | ||
ff4c9fec | 4548 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
4b514bc8 JK |
4549 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, |
4550 | expansion_notify); | |
61920122 PA |
4551 | } |
4552 | } | |
4553 | ||
4b514bc8 JK |
4554 | /* If FILE_MATCHER is non-NULL, set all the |
4555 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4556 | that match FILE_MATCHER. */ | |
4557 | ||
61920122 | 4558 | static void |
4b514bc8 | 4559 | dw_expand_symtabs_matching_file_matcher |
ed2dc618 SM |
4560 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4561 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) | |
61920122 | 4562 | { |
4b514bc8 | 4563 | if (file_matcher == NULL) |
61920122 PA |
4564 | return; |
4565 | ||
4b514bc8 JK |
4566 | objfile *const objfile = dwarf2_per_objfile->objfile; |
4567 | ||
4568 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, | |
4569 | htab_eq_pointer, | |
4570 | NULL, xcalloc, xfree)); | |
4571 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4572 | htab_eq_pointer, |
4573 | NULL, xcalloc, xfree)); | |
61920122 | 4574 | |
4b514bc8 JK |
4575 | /* The rule is CUs specify all the files, including those used by |
4576 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4577 | |
b76e467d | 4578 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 4579 | { |
927aa2e7 JK |
4580 | QUIT; |
4581 | ||
4582 | per_cu->v.quick->mark = 0; | |
4583 | ||
4584 | /* We only need to look at symtabs not already expanded. */ | |
4585 | if (per_cu->v.quick->compunit_symtab) | |
4586 | continue; | |
4587 | ||
b76e467d | 4588 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
4589 | if (file_data == NULL) |
4590 | continue; | |
4591 | ||
4592 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4593 | continue; | |
4594 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4595 | { | |
4596 | per_cu->v.quick->mark = 1; | |
4597 | continue; | |
4598 | } | |
4599 | ||
b76e467d | 4600 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4601 | { |
4602 | const char *this_real_name; | |
4603 | ||
4604 | if (file_matcher (file_data->file_names[j], false)) | |
4605 | { | |
4606 | per_cu->v.quick->mark = 1; | |
4607 | break; | |
4608 | } | |
4609 | ||
4610 | /* Before we invoke realpath, which can get expensive when many | |
4611 | files are involved, do a quick comparison of the basenames. */ | |
4612 | if (!basenames_may_differ | |
4613 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4614 | true)) | |
4615 | continue; | |
4616 | ||
4617 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
4618 | if (file_matcher (this_real_name, false)) | |
4619 | { | |
4620 | per_cu->v.quick->mark = 1; | |
4621 | break; | |
4622 | } | |
4623 | } | |
4624 | ||
b76e467d SM |
4625 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4626 | ? visited_found.get () | |
4627 | : visited_not_found.get (), | |
4628 | file_data, INSERT); | |
927aa2e7 JK |
4629 | *slot = file_data; |
4630 | } | |
4631 | } | |
4632 | ||
4633 | static void | |
4634 | dw2_expand_symtabs_matching | |
4635 | (struct objfile *objfile, | |
4636 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 4637 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
4638 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
4639 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4640 | enum search_domain kind) | |
4641 | { | |
ed2dc618 SM |
4642 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4643 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
4644 | |
4645 | /* index_table is NULL if OBJF_READNOW. */ | |
4646 | if (!dwarf2_per_objfile->index_table) | |
4647 | return; | |
4648 | ||
ed2dc618 | 4649 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
927aa2e7 | 4650 | |
c1a66c06 TV |
4651 | if (symbol_matcher == NULL && lookup_name == NULL) |
4652 | { | |
4653 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) | |
4654 | { | |
4655 | QUIT; | |
4656 | ||
4657 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, | |
4658 | expansion_notify); | |
4659 | } | |
4660 | return; | |
4661 | } | |
4662 | ||
927aa2e7 JK |
4663 | mapped_index &index = *dwarf2_per_objfile->index_table; |
4664 | ||
c1a66c06 | 4665 | dw2_expand_symtabs_matching_symbol (index, *lookup_name, |
927aa2e7 JK |
4666 | symbol_matcher, |
4667 | kind, [&] (offset_type idx) | |
4668 | { | |
ed2dc618 | 4669 | dw2_expand_marked_cus (dwarf2_per_objfile, idx, file_matcher, |
927aa2e7 | 4670 | expansion_notify, kind); |
3b00ef10 | 4671 | return true; |
927aa2e7 JK |
4672 | }); |
4673 | } | |
4674 | ||
4675 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
4676 | symtab. */ | |
4677 | ||
4678 | static struct compunit_symtab * | |
4679 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4680 | CORE_ADDR pc) | |
4681 | { | |
4682 | int i; | |
4683 | ||
4684 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
4685 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4686 | return cust; | |
4687 | ||
4688 | if (cust->includes == NULL) | |
4689 | return NULL; | |
4690 | ||
4691 | for (i = 0; cust->includes[i]; ++i) | |
4692 | { | |
4693 | struct compunit_symtab *s = cust->includes[i]; | |
4694 | ||
4695 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
4696 | if (s != NULL) | |
4697 | return s; | |
4698 | } | |
4699 | ||
4700 | return NULL; | |
4701 | } | |
4702 | ||
4703 | static struct compunit_symtab * | |
4704 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4705 | struct bound_minimal_symbol msymbol, | |
4706 | CORE_ADDR pc, | |
4707 | struct obj_section *section, | |
4708 | int warn_if_readin) | |
4709 | { | |
4710 | struct dwarf2_per_cu_data *data; | |
4711 | struct compunit_symtab *result; | |
4712 | ||
d320c2b5 | 4713 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
4714 | return NULL; |
4715 | ||
b3b3bada | 4716 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
d320c2b5 TT |
4717 | data = (struct dwarf2_per_cu_data *) addrmap_find |
4718 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
4719 | if (!data) |
4720 | return NULL; | |
4721 | ||
4722 | if (warn_if_readin && data->v.quick->compunit_symtab) | |
4723 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), | |
08feed99 | 4724 | paddress (objfile->arch (), pc)); |
927aa2e7 JK |
4725 | |
4726 | result | |
58f0c718 TT |
4727 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data, |
4728 | false), | |
927aa2e7 JK |
4729 | pc); |
4730 | gdb_assert (result != NULL); | |
4731 | return result; | |
4732 | } | |
4733 | ||
4734 | static void | |
4735 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
4736 | void *data, int need_fullname) | |
4737 | { | |
ed2dc618 SM |
4738 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4739 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
4740 | |
4741 | if (!dwarf2_per_objfile->filenames_cache) | |
4742 | { | |
4743 | dwarf2_per_objfile->filenames_cache.emplace (); | |
4744 | ||
4745 | htab_up visited (htab_create_alloc (10, | |
4746 | htab_hash_pointer, htab_eq_pointer, | |
4747 | NULL, xcalloc, xfree)); | |
4748 | ||
4749 | /* The rule is CUs specify all the files, including those used | |
4750 | by any TU, so there's no need to scan TUs here. We can | |
4751 | ignore file names coming from already-expanded CUs. */ | |
4752 | ||
b76e467d | 4753 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 4754 | { |
927aa2e7 JK |
4755 | if (per_cu->v.quick->compunit_symtab) |
4756 | { | |
4757 | void **slot = htab_find_slot (visited.get (), | |
4758 | per_cu->v.quick->file_names, | |
4759 | INSERT); | |
4760 | ||
4761 | *slot = per_cu->v.quick->file_names; | |
4762 | } | |
4763 | } | |
4764 | ||
b76e467d | 4765 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 4766 | { |
927aa2e7 JK |
4767 | /* We only need to look at symtabs not already expanded. */ |
4768 | if (per_cu->v.quick->compunit_symtab) | |
4769 | continue; | |
4770 | ||
b76e467d | 4771 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
4772 | if (file_data == NULL) |
4773 | continue; | |
4774 | ||
b76e467d | 4775 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
4776 | if (*slot) |
4777 | { | |
4778 | /* Already visited. */ | |
4779 | continue; | |
4780 | } | |
4781 | *slot = file_data; | |
4782 | ||
4783 | for (int j = 0; j < file_data->num_file_names; ++j) | |
4784 | { | |
4785 | const char *filename = file_data->file_names[j]; | |
4786 | dwarf2_per_objfile->filenames_cache->seen (filename); | |
4787 | } | |
4788 | } | |
4789 | } | |
4790 | ||
4791 | dwarf2_per_objfile->filenames_cache->traverse ([&] (const char *filename) | |
4792 | { | |
4793 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
4794 | ||
4795 | if (need_fullname) | |
4796 | this_real_name = gdb_realpath (filename); | |
4797 | (*fun) (filename, this_real_name.get (), data); | |
4798 | }); | |
4799 | } | |
4800 | ||
4801 | static int | |
4802 | dw2_has_symbols (struct objfile *objfile) | |
4803 | { | |
4804 | return 1; | |
4805 | } | |
4806 | ||
4807 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4808 | { | |
4809 | dw2_has_symbols, | |
4810 | dw2_find_last_source_symtab, | |
4811 | dw2_forget_cached_source_info, | |
4812 | dw2_map_symtabs_matching_filename, | |
4813 | dw2_lookup_symbol, | |
d3214198 | 4814 | NULL, |
927aa2e7 JK |
4815 | dw2_print_stats, |
4816 | dw2_dump, | |
927aa2e7 JK |
4817 | dw2_expand_symtabs_for_function, |
4818 | dw2_expand_all_symtabs, | |
4819 | dw2_expand_symtabs_with_fullname, | |
4820 | dw2_map_matching_symbols, | |
4821 | dw2_expand_symtabs_matching, | |
4822 | dw2_find_pc_sect_compunit_symtab, | |
4823 | NULL, | |
4824 | dw2_map_symbol_filenames | |
4825 | }; | |
4826 | ||
4827 | /* DWARF-5 debug_names reader. */ | |
4828 | ||
4829 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
4830 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
4831 | ||
4832 | /* A helper function that reads the .debug_names section in SECTION | |
4833 | and fills in MAP. FILENAME is the name of the file containing the | |
4834 | section; it is used for error reporting. | |
4835 | ||
4836 | Returns true if all went well, false otherwise. */ | |
4837 | ||
4838 | static bool | |
4839 | read_debug_names_from_section (struct objfile *objfile, | |
4840 | const char *filename, | |
4841 | struct dwarf2_section_info *section, | |
4842 | mapped_debug_names &map) | |
4843 | { | |
96b79293 | 4844 | if (section->empty ()) |
927aa2e7 JK |
4845 | return false; |
4846 | ||
4847 | /* Older elfutils strip versions could keep the section in the main | |
4848 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 4849 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
4850 | return false; |
4851 | ||
96b79293 | 4852 | section->read (objfile); |
927aa2e7 | 4853 | |
08feed99 | 4854 | map.dwarf5_byte_order = gdbarch_byte_order (objfile->arch ()); |
927aa2e7 JK |
4855 | |
4856 | const gdb_byte *addr = section->buffer; | |
4857 | ||
96b79293 | 4858 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
4859 | |
4860 | unsigned int bytes_read; | |
4861 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
4862 | addr += bytes_read; | |
4863 | ||
4864 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
4865 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
4866 | if (bytes_read + length != section->size) | |
4867 | { | |
4868 | /* There may be multiple per-CU indices. */ | |
4869 | warning (_("Section .debug_names in %s length %s does not match " | |
4870 | "section length %s, ignoring .debug_names."), | |
4871 | filename, plongest (bytes_read + length), | |
4872 | pulongest (section->size)); | |
4873 | return false; | |
4874 | } | |
4875 | ||
4876 | /* The version number. */ | |
4877 | uint16_t version = read_2_bytes (abfd, addr); | |
4878 | addr += 2; | |
4879 | if (version != 5) | |
4880 | { | |
4881 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
4882 | "ignoring .debug_names."), | |
4883 | filename, version); | |
4884 | return false; | |
4885 | } | |
4886 | ||
4887 | /* Padding. */ | |
4888 | uint16_t padding = read_2_bytes (abfd, addr); | |
4889 | addr += 2; | |
4890 | if (padding != 0) | |
4891 | { | |
4892 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
4893 | "ignoring .debug_names."), | |
4894 | filename, padding); | |
4895 | return false; | |
4896 | } | |
4897 | ||
4898 | /* comp_unit_count - The number of CUs in the CU list. */ | |
4899 | map.cu_count = read_4_bytes (abfd, addr); | |
4900 | addr += 4; | |
4901 | ||
4902 | /* local_type_unit_count - The number of TUs in the local TU | |
4903 | list. */ | |
4904 | map.tu_count = read_4_bytes (abfd, addr); | |
4905 | addr += 4; | |
4906 | ||
4907 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
4908 | list. */ | |
4909 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
4910 | addr += 4; | |
4911 | if (foreign_tu_count != 0) | |
4912 | { | |
4913 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
4914 | "ignoring .debug_names."), | |
4915 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
4916 | return false; | |
4917 | } | |
4918 | ||
4919 | /* bucket_count - The number of hash buckets in the hash lookup | |
4920 | table. */ | |
4921 | map.bucket_count = read_4_bytes (abfd, addr); | |
4922 | addr += 4; | |
4923 | ||
4924 | /* name_count - The number of unique names in the index. */ | |
4925 | map.name_count = read_4_bytes (abfd, addr); | |
4926 | addr += 4; | |
4927 | ||
4928 | /* abbrev_table_size - The size in bytes of the abbreviations | |
4929 | table. */ | |
4930 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
4931 | addr += 4; | |
4932 | ||
4933 | /* augmentation_string_size - The size in bytes of the augmentation | |
4934 | string. This value is rounded up to a multiple of 4. */ | |
4935 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
4936 | addr += 4; | |
4937 | map.augmentation_is_gdb = ((augmentation_string_size | |
4938 | == sizeof (dwarf5_augmentation)) | |
4939 | && memcmp (addr, dwarf5_augmentation, | |
4940 | sizeof (dwarf5_augmentation)) == 0); | |
4941 | augmentation_string_size += (-augmentation_string_size) & 3; | |
4942 | addr += augmentation_string_size; | |
4943 | ||
4944 | /* List of CUs */ | |
4945 | map.cu_table_reordered = addr; | |
4946 | addr += map.cu_count * map.offset_size; | |
4947 | ||
4948 | /* List of Local TUs */ | |
4949 | map.tu_table_reordered = addr; | |
4950 | addr += map.tu_count * map.offset_size; | |
4951 | ||
4952 | /* Hash Lookup Table */ | |
4953 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
4954 | addr += map.bucket_count * 4; | |
4955 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
4956 | addr += map.name_count * 4; | |
4957 | ||
4958 | /* Name Table */ | |
4959 | map.name_table_string_offs_reordered = addr; | |
4960 | addr += map.name_count * map.offset_size; | |
4961 | map.name_table_entry_offs_reordered = addr; | |
4962 | addr += map.name_count * map.offset_size; | |
4963 | ||
4964 | const gdb_byte *abbrev_table_start = addr; | |
4965 | for (;;) | |
4966 | { | |
927aa2e7 JK |
4967 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
4968 | addr += bytes_read; | |
4969 | if (index_num == 0) | |
4970 | break; | |
4971 | ||
4972 | const auto insertpair | |
4973 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
4974 | if (!insertpair.second) | |
4975 | { | |
4976 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
4977 | "ignoring .debug_names."), | |
4978 | filename, pulongest (index_num)); | |
4979 | return false; | |
4980 | } | |
4981 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
4982 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4983 | addr += bytes_read; | |
4984 | ||
4985 | for (;;) | |
4986 | { | |
4987 | mapped_debug_names::index_val::attr attr; | |
4988 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4989 | addr += bytes_read; | |
4990 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
4991 | addr += bytes_read; | |
4992 | if (attr.form == DW_FORM_implicit_const) | |
4993 | { | |
4994 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
4995 | &bytes_read); | |
4996 | addr += bytes_read; | |
4997 | } | |
4998 | if (attr.dw_idx == 0 && attr.form == 0) | |
4999 | break; | |
5000 | indexval.attr_vec.push_back (std::move (attr)); | |
5001 | } | |
5002 | } | |
5003 | if (addr != abbrev_table_start + abbrev_table_size) | |
5004 | { | |
5005 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
5006 | "of size %s vs. written as %u, ignoring .debug_names."), |
5007 | filename, plongest (addr - abbrev_table_start), | |
5008 | abbrev_table_size); | |
927aa2e7 JK |
5009 | return false; |
5010 | } | |
5011 | map.entry_pool = addr; | |
5012 | ||
5013 | return true; | |
5014 | } | |
5015 | ||
5016 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5017 | list. */ | |
5018 | ||
5019 | static void | |
ed2dc618 | 5020 | create_cus_from_debug_names_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5021 | const mapped_debug_names &map, |
5022 | dwarf2_section_info §ion, | |
b76e467d | 5023 | bool is_dwz) |
927aa2e7 JK |
5024 | { |
5025 | sect_offset sect_off_prev; | |
5026 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5027 | { | |
5028 | sect_offset sect_off_next; | |
5029 | if (i < map.cu_count) | |
5030 | { | |
5031 | sect_off_next | |
5032 | = (sect_offset) (extract_unsigned_integer | |
5033 | (map.cu_table_reordered + i * map.offset_size, | |
5034 | map.offset_size, | |
5035 | map.dwarf5_byte_order)); | |
5036 | } | |
5037 | else | |
5038 | sect_off_next = (sect_offset) section.size; | |
5039 | if (i >= 1) | |
5040 | { | |
5041 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5042 | dwarf2_per_cu_data *per_cu |
ed2dc618 | 5043 | = create_cu_from_index_list (dwarf2_per_objfile, §ion, is_dwz, |
927aa2e7 | 5044 | sect_off_prev, length); |
b76e467d | 5045 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5046 | } |
5047 | sect_off_prev = sect_off_next; | |
5048 | } | |
5049 | } | |
5050 | ||
5051 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5052 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5053 | |
5054 | static void | |
ed2dc618 | 5055 | create_cus_from_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5056 | const mapped_debug_names &map, |
5057 | const mapped_debug_names &dwz_map) | |
5058 | { | |
b76e467d SM |
5059 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
5060 | dwarf2_per_objfile->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5061 | |
ed2dc618 SM |
5062 | create_cus_from_debug_names_list (dwarf2_per_objfile, map, |
5063 | dwarf2_per_objfile->info, | |
b76e467d | 5064 | false /* is_dwz */); |
927aa2e7 JK |
5065 | |
5066 | if (dwz_map.cu_count == 0) | |
5067 | return; | |
5068 | ||
ed2dc618 SM |
5069 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
5070 | create_cus_from_debug_names_list (dwarf2_per_objfile, dwz_map, dwz->info, | |
b76e467d | 5071 | true /* is_dwz */); |
927aa2e7 JK |
5072 | } |
5073 | ||
5074 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5075 | elements of all the CUs and return true. Otherwise, return false. */ | |
5076 | ||
5077 | static bool | |
ed2dc618 | 5078 | dwarf2_read_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile) |
927aa2e7 | 5079 | { |
22ca247e TT |
5080 | std::unique_ptr<mapped_debug_names> map |
5081 | (new mapped_debug_names (dwarf2_per_objfile)); | |
ed2dc618 SM |
5082 | mapped_debug_names dwz_map (dwarf2_per_objfile); |
5083 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
927aa2e7 JK |
5084 | |
5085 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
5086 | &dwarf2_per_objfile->debug_names, | |
22ca247e | 5087 | *map)) |
927aa2e7 JK |
5088 | return false; |
5089 | ||
5090 | /* Don't use the index if it's empty. */ | |
22ca247e | 5091 | if (map->name_count == 0) |
927aa2e7 JK |
5092 | return false; |
5093 | ||
5094 | /* If there is a .dwz file, read it so we can get its CU list as | |
5095 | well. */ | |
ed2dc618 | 5096 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
927aa2e7 JK |
5097 | if (dwz != NULL) |
5098 | { | |
5099 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5100 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5101 | &dwz->debug_names, dwz_map)) |
5102 | { | |
5103 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5104 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5105 | return false; |
5106 | } | |
5107 | } | |
5108 | ||
22ca247e | 5109 | create_cus_from_debug_names (dwarf2_per_objfile, *map, dwz_map); |
927aa2e7 | 5110 | |
22ca247e | 5111 | if (map->tu_count != 0) |
927aa2e7 JK |
5112 | { |
5113 | /* We can only handle a single .debug_types when we have an | |
5114 | index. */ | |
fd5866f6 | 5115 | if (dwarf2_per_objfile->types.size () != 1) |
927aa2e7 JK |
5116 | return false; |
5117 | ||
fd5866f6 | 5118 | dwarf2_section_info *section = &dwarf2_per_objfile->types[0]; |
927aa2e7 JK |
5119 | |
5120 | create_signatured_type_table_from_debug_names | |
22ca247e | 5121 | (dwarf2_per_objfile, *map, section, &dwarf2_per_objfile->abbrev); |
927aa2e7 JK |
5122 | } |
5123 | ||
ed2dc618 SM |
5124 | create_addrmap_from_aranges (dwarf2_per_objfile, |
5125 | &dwarf2_per_objfile->debug_aranges); | |
927aa2e7 | 5126 | |
22ca247e | 5127 | dwarf2_per_objfile->debug_names_table = std::move (map); |
927aa2e7 JK |
5128 | dwarf2_per_objfile->using_index = 1; |
5129 | dwarf2_per_objfile->quick_file_names_table = | |
b76e467d | 5130 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
927aa2e7 JK |
5131 | |
5132 | return true; | |
5133 | } | |
5134 | ||
927aa2e7 JK |
5135 | /* Type used to manage iterating over all CUs looking for a symbol for |
5136 | .debug_names. */ | |
5137 | ||
5138 | class dw2_debug_names_iterator | |
5139 | { | |
5140 | public: | |
927aa2e7 | 5141 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5142 | gdb::optional<block_enum> block_index, |
5143 | domain_enum domain, | |
927aa2e7 | 5144 | const char *name) |
2b79f376 | 5145 | : m_map (map), m_block_index (block_index), m_domain (domain), |
927aa2e7 JK |
5146 | m_addr (find_vec_in_debug_names (map, name)) |
5147 | {} | |
5148 | ||
5149 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5150 | search_domain search, uint32_t namei) | |
5151 | : m_map (map), | |
5152 | m_search (search), | |
5153 | m_addr (find_vec_in_debug_names (map, namei)) | |
5154 | {} | |
5155 | ||
3b00ef10 TT |
5156 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5157 | block_enum block_index, domain_enum domain, | |
5158 | uint32_t namei) | |
5159 | : m_map (map), m_block_index (block_index), m_domain (domain), | |
5160 | m_addr (find_vec_in_debug_names (map, namei)) | |
5161 | {} | |
5162 | ||
927aa2e7 JK |
5163 | /* Return the next matching CU or NULL if there are no more. */ |
5164 | dwarf2_per_cu_data *next (); | |
5165 | ||
5166 | private: | |
5167 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5168 | const char *name); | |
5169 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5170 | uint32_t namei); | |
5171 | ||
5172 | /* The internalized form of .debug_names. */ | |
5173 | const mapped_debug_names &m_map; | |
5174 | ||
2b79f376 SM |
5175 | /* If set, only look for symbols that match that block. Valid values are |
5176 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5177 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5178 | |
5179 | /* The kind of symbol we're looking for. */ | |
5180 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5181 | const search_domain m_search = ALL_DOMAIN; | |
5182 | ||
5183 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5184 | not found. */ | |
5185 | const gdb_byte *m_addr; | |
5186 | }; | |
5187 | ||
5188 | const char * | |
5189 | mapped_debug_names::namei_to_name (uint32_t namei) const | |
5190 | { | |
5191 | const ULONGEST namei_string_offs | |
5192 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5193 | + namei * offset_size), | |
5194 | offset_size, | |
5195 | dwarf5_byte_order); | |
4f44ae6c TT |
5196 | return read_indirect_string_at_offset (dwarf2_per_objfile, |
5197 | namei_string_offs); | |
927aa2e7 JK |
5198 | } |
5199 | ||
5200 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5201 | found, return pointer to its pool data. If NAME cannot be found, | |
5202 | return NULL. */ | |
5203 | ||
5204 | const gdb_byte * | |
5205 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5206 | (const mapped_debug_names &map, const char *name) | |
5207 | { | |
5208 | int (*cmp) (const char *, const char *); | |
5209 | ||
54ee4252 | 5210 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5211 | if (current_language->la_language == language_cplus |
5212 | || current_language->la_language == language_fortran | |
5213 | || current_language->la_language == language_d) | |
5214 | { | |
5215 | /* NAME is already canonical. Drop any qualifiers as | |
5216 | .debug_names does not contain any. */ | |
5217 | ||
5218 | if (strchr (name, '(') != NULL) | |
5219 | { | |
54ee4252 | 5220 | without_params = cp_remove_params (name); |
927aa2e7 | 5221 | if (without_params != NULL) |
54ee4252 | 5222 | name = without_params.get (); |
927aa2e7 JK |
5223 | } |
5224 | } | |
5225 | ||
5226 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5227 | ||
5228 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5229 | uint32_t namei | |
5230 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5231 | (map.bucket_table_reordered | |
5232 | + (full_hash % map.bucket_count)), 4, | |
5233 | map.dwarf5_byte_order); | |
5234 | if (namei == 0) | |
5235 | return NULL; | |
5236 | --namei; | |
5237 | if (namei >= map.name_count) | |
5238 | { | |
b98664d3 | 5239 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5240 | "[in module %s]"), |
5241 | namei, map.name_count, | |
ed2dc618 | 5242 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5243 | return NULL; |
5244 | } | |
5245 | ||
5246 | for (;;) | |
5247 | { | |
5248 | const uint32_t namei_full_hash | |
5249 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5250 | (map.hash_table_reordered + namei), 4, | |
5251 | map.dwarf5_byte_order); | |
5252 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5253 | return NULL; | |
5254 | ||
5255 | if (full_hash == namei_full_hash) | |
5256 | { | |
5257 | const char *const namei_string = map.namei_to_name (namei); | |
5258 | ||
5259 | #if 0 /* An expensive sanity check. */ | |
5260 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5261 | { | |
b98664d3 | 5262 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5263 | "[in module %s]"), |
5264 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5265 | return NULL; | |
5266 | } | |
5267 | #endif | |
5268 | ||
5269 | if (cmp (namei_string, name) == 0) | |
5270 | { | |
5271 | const ULONGEST namei_entry_offs | |
5272 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5273 | + namei * map.offset_size), | |
5274 | map.offset_size, map.dwarf5_byte_order); | |
5275 | return map.entry_pool + namei_entry_offs; | |
5276 | } | |
5277 | } | |
5278 | ||
5279 | ++namei; | |
5280 | if (namei >= map.name_count) | |
5281 | return NULL; | |
5282 | } | |
5283 | } | |
5284 | ||
5285 | const gdb_byte * | |
5286 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5287 | (const mapped_debug_names &map, uint32_t namei) | |
5288 | { | |
5289 | if (namei >= map.name_count) | |
5290 | { | |
b98664d3 | 5291 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5292 | "[in module %s]"), |
5293 | namei, map.name_count, | |
ed2dc618 | 5294 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5295 | return NULL; |
5296 | } | |
5297 | ||
5298 | const ULONGEST namei_entry_offs | |
5299 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5300 | + namei * map.offset_size), | |
5301 | map.offset_size, map.dwarf5_byte_order); | |
5302 | return map.entry_pool + namei_entry_offs; | |
5303 | } | |
5304 | ||
5305 | /* See dw2_debug_names_iterator. */ | |
5306 | ||
5307 | dwarf2_per_cu_data * | |
5308 | dw2_debug_names_iterator::next () | |
5309 | { | |
5310 | if (m_addr == NULL) | |
5311 | return NULL; | |
5312 | ||
ed2dc618 SM |
5313 | struct dwarf2_per_objfile *dwarf2_per_objfile = m_map.dwarf2_per_objfile; |
5314 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5315 | bfd *const abfd = objfile->obfd; | |
927aa2e7 JK |
5316 | |
5317 | again: | |
5318 | ||
5319 | unsigned int bytes_read; | |
5320 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5321 | m_addr += bytes_read; | |
5322 | if (abbrev == 0) | |
5323 | return NULL; | |
5324 | ||
5325 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5326 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5327 | { | |
b98664d3 | 5328 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5329 | "[in module %s]"), |
ed2dc618 | 5330 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5331 | return NULL; |
5332 | } | |
5333 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5334 | enum class symbol_linkage { |
5335 | unknown, | |
5336 | static_, | |
5337 | extern_, | |
23c13d42 | 5338 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5339 | dwarf2_per_cu_data *per_cu = NULL; |
5340 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5341 | { | |
5342 | ULONGEST ull; | |
5343 | switch (attr.form) | |
5344 | { | |
5345 | case DW_FORM_implicit_const: | |
5346 | ull = attr.implicit_const; | |
5347 | break; | |
5348 | case DW_FORM_flag_present: | |
5349 | ull = 1; | |
5350 | break; | |
5351 | case DW_FORM_udata: | |
5352 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5353 | m_addr += bytes_read; | |
5354 | break; | |
5355 | default: | |
b98664d3 | 5356 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5357 | dwarf_form_name (attr.form), |
ed2dc618 | 5358 | objfile_name (objfile)); |
927aa2e7 JK |
5359 | return NULL; |
5360 | } | |
5361 | switch (attr.dw_idx) | |
5362 | { | |
5363 | case DW_IDX_compile_unit: | |
5364 | /* Don't crash on bad data. */ | |
b76e467d | 5365 | if (ull >= dwarf2_per_objfile->all_comp_units.size ()) |
927aa2e7 | 5366 | { |
b98664d3 | 5367 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5368 | " [in module %s]"), |
5369 | pulongest (ull), | |
5370 | objfile_name (dwarf2_per_objfile->objfile)); | |
5371 | continue; | |
5372 | } | |
ff4c9fec | 5373 | per_cu = dwarf2_per_objfile->get_cutu (ull); |
927aa2e7 | 5374 | break; |
8af5c486 JK |
5375 | case DW_IDX_type_unit: |
5376 | /* Don't crash on bad data. */ | |
b2bdb8cf | 5377 | if (ull >= dwarf2_per_objfile->all_type_units.size ()) |
8af5c486 | 5378 | { |
b98664d3 | 5379 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5380 | " [in module %s]"), |
5381 | pulongest (ull), | |
5382 | objfile_name (dwarf2_per_objfile->objfile)); | |
5383 | continue; | |
5384 | } | |
ff4c9fec | 5385 | per_cu = &dwarf2_per_objfile->get_tu (ull)->per_cu; |
8af5c486 | 5386 | break; |
927aa2e7 JK |
5387 | case DW_IDX_GNU_internal: |
5388 | if (!m_map.augmentation_is_gdb) | |
5389 | break; | |
23c13d42 | 5390 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5391 | break; |
5392 | case DW_IDX_GNU_external: | |
5393 | if (!m_map.augmentation_is_gdb) | |
5394 | break; | |
23c13d42 | 5395 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5396 | break; |
5397 | } | |
5398 | } | |
5399 | ||
5400 | /* Skip if already read in. */ | |
5401 | if (per_cu->v.quick->compunit_symtab) | |
5402 | goto again; | |
5403 | ||
5404 | /* Check static vs global. */ | |
23c13d42 | 5405 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5406 | { |
2b79f376 | 5407 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5408 | const bool symbol_is_static = |
5409 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5410 | if (want_static != symbol_is_static) |
2b79f376 | 5411 | goto again; |
927aa2e7 JK |
5412 | } |
5413 | ||
5414 | /* Match dw2_symtab_iter_next, symbol_kind | |
5415 | and debug_names::psymbol_tag. */ | |
5416 | switch (m_domain) | |
5417 | { | |
5418 | case VAR_DOMAIN: | |
5419 | switch (indexval.dwarf_tag) | |
5420 | { | |
5421 | case DW_TAG_variable: | |
5422 | case DW_TAG_subprogram: | |
5423 | /* Some types are also in VAR_DOMAIN. */ | |
5424 | case DW_TAG_typedef: | |
5425 | case DW_TAG_structure_type: | |
5426 | break; | |
5427 | default: | |
5428 | goto again; | |
5429 | } | |
5430 | break; | |
5431 | case STRUCT_DOMAIN: | |
5432 | switch (indexval.dwarf_tag) | |
5433 | { | |
5434 | case DW_TAG_typedef: | |
5435 | case DW_TAG_structure_type: | |
5436 | break; | |
5437 | default: | |
5438 | goto again; | |
5439 | } | |
5440 | break; | |
5441 | case LABEL_DOMAIN: | |
5442 | switch (indexval.dwarf_tag) | |
5443 | { | |
5444 | case 0: | |
5445 | case DW_TAG_variable: | |
5446 | break; | |
5447 | default: | |
5448 | goto again; | |
5449 | } | |
5450 | break; | |
59c35742 AB |
5451 | case MODULE_DOMAIN: |
5452 | switch (indexval.dwarf_tag) | |
5453 | { | |
5454 | case DW_TAG_module: | |
5455 | break; | |
5456 | default: | |
5457 | goto again; | |
5458 | } | |
5459 | break; | |
927aa2e7 JK |
5460 | default: |
5461 | break; | |
5462 | } | |
5463 | ||
5464 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5465 | debug_names::psymbol_tag. */ | |
5466 | switch (m_search) | |
4b514bc8 | 5467 | { |
927aa2e7 JK |
5468 | case VARIABLES_DOMAIN: |
5469 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5470 | { |
927aa2e7 JK |
5471 | case DW_TAG_variable: |
5472 | break; | |
5473 | default: | |
5474 | goto again; | |
4b514bc8 | 5475 | } |
927aa2e7 JK |
5476 | break; |
5477 | case FUNCTIONS_DOMAIN: | |
5478 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5479 | { |
927aa2e7 JK |
5480 | case DW_TAG_subprogram: |
5481 | break; | |
5482 | default: | |
5483 | goto again; | |
4b514bc8 | 5484 | } |
927aa2e7 JK |
5485 | break; |
5486 | case TYPES_DOMAIN: | |
5487 | switch (indexval.dwarf_tag) | |
5488 | { | |
5489 | case DW_TAG_typedef: | |
5490 | case DW_TAG_structure_type: | |
5491 | break; | |
5492 | default: | |
5493 | goto again; | |
5494 | } | |
5495 | break; | |
59c35742 AB |
5496 | case MODULES_DOMAIN: |
5497 | switch (indexval.dwarf_tag) | |
5498 | { | |
5499 | case DW_TAG_module: | |
5500 | break; | |
5501 | default: | |
5502 | goto again; | |
5503 | } | |
927aa2e7 JK |
5504 | default: |
5505 | break; | |
4b514bc8 | 5506 | } |
927aa2e7 JK |
5507 | |
5508 | return per_cu; | |
4b514bc8 | 5509 | } |
61920122 | 5510 | |
927aa2e7 | 5511 | static struct compunit_symtab * |
c7f839cb | 5512 | dw2_debug_names_lookup_symbol (struct objfile *objfile, block_enum block_index, |
927aa2e7 | 5513 | const char *name, domain_enum domain) |
4b514bc8 | 5514 | { |
ed2dc618 SM |
5515 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5516 | = get_dwarf2_per_objfile (objfile); | |
61920122 | 5517 | |
927aa2e7 JK |
5518 | const auto &mapp = dwarf2_per_objfile->debug_names_table; |
5519 | if (!mapp) | |
61920122 | 5520 | { |
927aa2e7 JK |
5521 | /* index is NULL if OBJF_READNOW. */ |
5522 | return NULL; | |
5523 | } | |
5524 | const auto &map = *mapp; | |
9291a0cd | 5525 | |
2b79f376 | 5526 | dw2_debug_names_iterator iter (map, block_index, domain, name); |
9703b513 | 5527 | |
927aa2e7 JK |
5528 | struct compunit_symtab *stab_best = NULL; |
5529 | struct dwarf2_per_cu_data *per_cu; | |
5530 | while ((per_cu = iter.next ()) != NULL) | |
5531 | { | |
5532 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 5533 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
927aa2e7 | 5534 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 5535 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 5536 | |
927aa2e7 JK |
5537 | sym = block_find_symbol (block, name, domain, |
5538 | block_find_non_opaque_type_preferred, | |
5539 | &with_opaque); | |
9703b513 | 5540 | |
927aa2e7 JK |
5541 | /* Some caution must be observed with overloaded functions and |
5542 | methods, since the index will not contain any overload | |
5543 | information (but NAME might contain it). */ | |
a3ec0bb1 | 5544 | |
927aa2e7 | 5545 | if (sym != NULL |
987012b8 | 5546 | && strcmp_iw (sym->search_name (), name) == 0) |
927aa2e7 JK |
5547 | return stab; |
5548 | if (with_opaque != NULL | |
987012b8 | 5549 | && strcmp_iw (with_opaque->search_name (), name) == 0) |
927aa2e7 | 5550 | stab_best = stab; |
9703b513 | 5551 | |
927aa2e7 | 5552 | /* Keep looking through other CUs. */ |
9703b513 TT |
5553 | } |
5554 | ||
927aa2e7 | 5555 | return stab_best; |
9703b513 TT |
5556 | } |
5557 | ||
927aa2e7 JK |
5558 | /* This dumps minimal information about .debug_names. It is called |
5559 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5560 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5561 | |
927aa2e7 JK |
5562 | static void |
5563 | dw2_debug_names_dump (struct objfile *objfile) | |
5564 | { | |
ed2dc618 SM |
5565 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5566 | = get_dwarf2_per_objfile (objfile); | |
5567 | ||
927aa2e7 JK |
5568 | gdb_assert (dwarf2_per_objfile->using_index); |
5569 | printf_filtered (".debug_names:"); | |
5570 | if (dwarf2_per_objfile->debug_names_table) | |
5571 | printf_filtered (" exists\n"); | |
5572 | else | |
5573 | printf_filtered (" faked for \"readnow\"\n"); | |
5574 | printf_filtered ("\n"); | |
9291a0cd TT |
5575 | } |
5576 | ||
9291a0cd | 5577 | static void |
927aa2e7 JK |
5578 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
5579 | const char *func_name) | |
9291a0cd | 5580 | { |
ed2dc618 SM |
5581 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5582 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 5583 | |
927aa2e7 JK |
5584 | /* dwarf2_per_objfile->debug_names_table is NULL if OBJF_READNOW. */ |
5585 | if (dwarf2_per_objfile->debug_names_table) | |
24c79950 | 5586 | { |
927aa2e7 | 5587 | const mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
24c79950 | 5588 | |
2b79f376 | 5589 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name); |
24c79950 | 5590 | |
927aa2e7 JK |
5591 | struct dwarf2_per_cu_data *per_cu; |
5592 | while ((per_cu = iter.next ()) != NULL) | |
58f0c718 | 5593 | dw2_instantiate_symtab (per_cu, false); |
927aa2e7 JK |
5594 | } |
5595 | } | |
24c79950 | 5596 | |
3b00ef10 TT |
5597 | static void |
5598 | dw2_debug_names_map_matching_symbols | |
5599 | (struct objfile *objfile, | |
5600 | const lookup_name_info &name, domain_enum domain, | |
5601 | int global, | |
5602 | gdb::function_view<symbol_found_callback_ftype> callback, | |
5603 | symbol_compare_ftype *ordered_compare) | |
5604 | { | |
5605 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
5606 | = get_dwarf2_per_objfile (objfile); | |
5607 | ||
5608 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
5609 | if (!dwarf2_per_objfile->debug_names_table) | |
5610 | return; | |
5611 | ||
5612 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; | |
5613 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; | |
5614 | ||
5615 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5616 | auto matcher = [&] (const char *symname) | |
5617 | { | |
5618 | if (ordered_compare == nullptr) | |
5619 | return true; | |
5620 | return ordered_compare (symname, match_name) == 0; | |
5621 | }; | |
5622 | ||
5623 | dw2_expand_symtabs_matching_symbol (map, name, matcher, ALL_DOMAIN, | |
5624 | [&] (offset_type namei) | |
5625 | { | |
5626 | /* The name was matched, now expand corresponding CUs that were | |
5627 | marked. */ | |
5628 | dw2_debug_names_iterator iter (map, block_kind, domain, namei); | |
5629 | ||
5630 | struct dwarf2_per_cu_data *per_cu; | |
5631 | while ((per_cu = iter.next ()) != NULL) | |
5632 | dw2_expand_symtabs_matching_one (per_cu, nullptr, nullptr); | |
5633 | return true; | |
5634 | }); | |
5635 | ||
5636 | /* It's a shame we couldn't do this inside the | |
5637 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
5638 | that have already been expanded. Instead, this loop matches what | |
5639 | the psymtab code does. */ | |
5640 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) | |
5641 | { | |
5642 | struct compunit_symtab *cust = per_cu->v.quick->compunit_symtab; | |
5643 | if (cust != nullptr) | |
5644 | { | |
5645 | const struct block *block | |
5646 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
5647 | if (!iterate_over_symbols_terminated (block, name, | |
5648 | domain, callback)) | |
5649 | break; | |
5650 | } | |
5651 | } | |
5652 | } | |
5653 | ||
927aa2e7 JK |
5654 | static void |
5655 | dw2_debug_names_expand_symtabs_matching | |
5656 | (struct objfile *objfile, | |
5657 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 5658 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
5659 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
5660 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5661 | enum search_domain kind) | |
5662 | { | |
ed2dc618 SM |
5663 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5664 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 5665 | |
927aa2e7 JK |
5666 | /* debug_names_table is NULL if OBJF_READNOW. */ |
5667 | if (!dwarf2_per_objfile->debug_names_table) | |
5668 | return; | |
9291a0cd | 5669 | |
ed2dc618 | 5670 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
24c79950 | 5671 | |
c1a66c06 TV |
5672 | if (symbol_matcher == NULL && lookup_name == NULL) |
5673 | { | |
5674 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) | |
5675 | { | |
5676 | QUIT; | |
5677 | ||
5678 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, | |
5679 | expansion_notify); | |
5680 | } | |
5681 | return; | |
5682 | } | |
5683 | ||
44ed8f3e | 5684 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
bbf2f4df | 5685 | |
c1a66c06 | 5686 | dw2_expand_symtabs_matching_symbol (map, *lookup_name, |
44ed8f3e PA |
5687 | symbol_matcher, |
5688 | kind, [&] (offset_type namei) | |
927aa2e7 | 5689 | { |
927aa2e7 JK |
5690 | /* The name was matched, now expand corresponding CUs that were |
5691 | marked. */ | |
5692 | dw2_debug_names_iterator iter (map, kind, namei); | |
bbf2f4df | 5693 | |
927aa2e7 JK |
5694 | struct dwarf2_per_cu_data *per_cu; |
5695 | while ((per_cu = iter.next ()) != NULL) | |
5696 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, | |
5697 | expansion_notify); | |
3b00ef10 | 5698 | return true; |
44ed8f3e | 5699 | }); |
9291a0cd TT |
5700 | } |
5701 | ||
927aa2e7 | 5702 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
5703 | { |
5704 | dw2_has_symbols, | |
5705 | dw2_find_last_source_symtab, | |
5706 | dw2_forget_cached_source_info, | |
f8eba3c6 | 5707 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 5708 | dw2_debug_names_lookup_symbol, |
d3214198 | 5709 | NULL, |
9291a0cd | 5710 | dw2_print_stats, |
927aa2e7 | 5711 | dw2_debug_names_dump, |
927aa2e7 | 5712 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 5713 | dw2_expand_all_symtabs, |
652a8996 | 5714 | dw2_expand_symtabs_with_fullname, |
3b00ef10 | 5715 | dw2_debug_names_map_matching_symbols, |
927aa2e7 | 5716 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 5717 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 5718 | NULL, |
9291a0cd TT |
5719 | dw2_map_symbol_filenames |
5720 | }; | |
5721 | ||
4485a1c1 SM |
5722 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5723 | to either a dwarf2_per_objfile or dwz_file object. */ | |
5724 | ||
5725 | template <typename T> | |
5726 | static gdb::array_view<const gdb_byte> | |
5727 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
5728 | { | |
5729 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
5730 | ||
96b79293 | 5731 | if (section->empty ()) |
4485a1c1 SM |
5732 | return {}; |
5733 | ||
5734 | /* Older elfutils strip versions could keep the section in the main | |
5735 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5736 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
5737 | return {}; |
5738 | ||
96b79293 | 5739 | section->read (obj); |
4485a1c1 | 5740 | |
8bebfcda PA |
5741 | /* dwarf2_section_info::size is a bfd_size_type, while |
5742 | gdb::array_view works with size_t. On 32-bit hosts, with | |
5743 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
5744 | is 32-bit. So we need an explicit narrowing conversion here. | |
5745 | This is fine, because it's impossible to allocate or mmap an | |
5746 | array/buffer larger than what size_t can represent. */ | |
5747 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
5748 | } |
5749 | ||
87d6a7aa SM |
5750 | /* Lookup the index cache for the contents of the index associated to |
5751 | DWARF2_OBJ. */ | |
5752 | ||
5753 | static gdb::array_view<const gdb_byte> | |
5754 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_objfile *dwarf2_obj) | |
5755 | { | |
5756 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
5757 | if (build_id == nullptr) | |
5758 | return {}; | |
5759 | ||
5760 | return global_index_cache.lookup_gdb_index (build_id, | |
5761 | &dwarf2_obj->index_cache_res); | |
5762 | } | |
5763 | ||
5764 | /* Same as the above, but for DWZ. */ | |
5765 | ||
5766 | static gdb::array_view<const gdb_byte> | |
5767 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
5768 | { | |
5769 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
5770 | if (build_id == nullptr) | |
5771 | return {}; | |
5772 | ||
5773 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
5774 | } | |
5775 | ||
3c0aa29a | 5776 | /* See symfile.h. */ |
9291a0cd | 5777 | |
3c0aa29a PA |
5778 | bool |
5779 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 5780 | { |
ed2dc618 SM |
5781 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5782 | = get_dwarf2_per_objfile (objfile); | |
5783 | ||
9291a0cd TT |
5784 | /* If we're about to read full symbols, don't bother with the |
5785 | indices. In this case we also don't care if some other debug | |
5786 | format is making psymtabs, because they are all about to be | |
5787 | expanded anyway. */ | |
5788 | if ((objfile->flags & OBJF_READNOW)) | |
5789 | { | |
9291a0cd | 5790 | dwarf2_per_objfile->using_index = 1; |
ed2dc618 SM |
5791 | create_all_comp_units (dwarf2_per_objfile); |
5792 | create_all_type_units (dwarf2_per_objfile); | |
b76e467d SM |
5793 | dwarf2_per_objfile->quick_file_names_table |
5794 | = create_quick_file_names_table | |
5795 | (dwarf2_per_objfile->all_comp_units.size ()); | |
9291a0cd | 5796 | |
b76e467d | 5797 | for (int i = 0; i < (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 5798 | + dwarf2_per_objfile->all_type_units.size ()); ++i) |
9291a0cd | 5799 | { |
ff4c9fec | 5800 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 5801 | |
e254ef6a DE |
5802 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
5803 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
5804 | } |
5805 | ||
5806 | /* Return 1 so that gdb sees the "quick" functions. However, | |
5807 | these functions will be no-ops because we will have expanded | |
5808 | all symtabs. */ | |
3c0aa29a PA |
5809 | *index_kind = dw_index_kind::GDB_INDEX; |
5810 | return true; | |
9291a0cd TT |
5811 | } |
5812 | ||
ed2dc618 | 5813 | if (dwarf2_read_debug_names (dwarf2_per_objfile)) |
3c0aa29a PA |
5814 | { |
5815 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
5816 | return true; | |
5817 | } | |
927aa2e7 | 5818 | |
4485a1c1 SM |
5819 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, |
5820 | get_gdb_index_contents_from_section<struct dwarf2_per_objfile>, | |
5821 | get_gdb_index_contents_from_section<dwz_file>)) | |
3c0aa29a PA |
5822 | { |
5823 | *index_kind = dw_index_kind::GDB_INDEX; | |
5824 | return true; | |
5825 | } | |
9291a0cd | 5826 | |
87d6a7aa SM |
5827 | /* ... otherwise, try to find the index in the index cache. */ |
5828 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, | |
5829 | get_gdb_index_contents_from_cache, | |
5830 | get_gdb_index_contents_from_cache_dwz)) | |
5831 | { | |
5832 | global_index_cache.hit (); | |
5833 | *index_kind = dw_index_kind::GDB_INDEX; | |
5834 | return true; | |
5835 | } | |
5836 | ||
5837 | global_index_cache.miss (); | |
3c0aa29a | 5838 | return false; |
9291a0cd TT |
5839 | } |
5840 | ||
5841 | \f | |
5842 | ||
dce234bc PP |
5843 | /* Build a partial symbol table. */ |
5844 | ||
5845 | void | |
f29dff0a | 5846 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 5847 | { |
ed2dc618 SM |
5848 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5849 | = get_dwarf2_per_objfile (objfile); | |
c9bf0622 | 5850 | |
6eee24ce | 5851 | init_psymbol_list (objfile, 1024); |
c906108c | 5852 | |
a70b8144 | 5853 | try |
c9bf0622 TT |
5854 | { |
5855 | /* This isn't really ideal: all the data we allocate on the | |
5856 | objfile's obstack is still uselessly kept around. However, | |
5857 | freeing it seems unsafe. */ | |
906768f9 | 5858 | psymtab_discarder psymtabs (objfile); |
ed2dc618 | 5859 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile); |
906768f9 | 5860 | psymtabs.keep (); |
87d6a7aa SM |
5861 | |
5862 | /* (maybe) store an index in the cache. */ | |
5863 | global_index_cache.store (dwarf2_per_objfile); | |
c9bf0622 | 5864 | } |
230d2906 | 5865 | catch (const gdb_exception_error &except) |
492d29ea PA |
5866 | { |
5867 | exception_print (gdb_stderr, except); | |
5868 | } | |
c906108c | 5869 | } |
c906108c | 5870 | |
3b80fe9b DE |
5871 | /* Find the base address of the compilation unit for range lists and |
5872 | location lists. It will normally be specified by DW_AT_low_pc. | |
5873 | In DWARF-3 draft 4, the base address could be overridden by | |
5874 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
5875 | compilation units with discontinuous ranges. */ | |
5876 | ||
5877 | static void | |
5878 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
5879 | { | |
5880 | struct attribute *attr; | |
5881 | ||
2b24b6e4 | 5882 | cu->base_address.reset (); |
3b80fe9b DE |
5883 | |
5884 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 5885 | if (attr != nullptr) |
2b24b6e4 | 5886 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
5887 | else |
5888 | { | |
5889 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 5890 | if (attr != nullptr) |
2b24b6e4 | 5891 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
5892 | } |
5893 | } | |
5894 | ||
36586728 TT |
5895 | /* Helper function that returns the proper abbrev section for |
5896 | THIS_CU. */ | |
5897 | ||
5898 | static struct dwarf2_section_info * | |
5899 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
5900 | { | |
5901 | struct dwarf2_section_info *abbrev; | |
ed2dc618 | 5902 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
36586728 TT |
5903 | |
5904 | if (this_cu->is_dwz) | |
ed2dc618 | 5905 | abbrev = &dwarf2_get_dwz_file (dwarf2_per_objfile)->abbrev; |
36586728 TT |
5906 | else |
5907 | abbrev = &dwarf2_per_objfile->abbrev; | |
5908 | ||
5909 | return abbrev; | |
5910 | } | |
5911 | ||
f4dc4d17 DE |
5912 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
5913 | ||
5914 | static sect_offset | |
ed2dc618 SM |
5915 | read_abbrev_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
5916 | struct dwarf2_section_info *section, | |
9c541725 | 5917 | sect_offset sect_off) |
f4dc4d17 | 5918 | { |
96b79293 | 5919 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 5920 | const gdb_byte *info_ptr; |
ac298888 | 5921 | unsigned int initial_length_size, offset_size; |
43988095 | 5922 | uint16_t version; |
f4dc4d17 | 5923 | |
96b79293 | 5924 | section->read (dwarf2_per_objfile->objfile); |
9c541725 | 5925 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 5926 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 5927 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
5928 | info_ptr += initial_length_size; |
5929 | ||
5930 | version = read_2_bytes (abfd, info_ptr); | |
5931 | info_ptr += 2; | |
5932 | if (version >= 5) | |
5933 | { | |
5934 | /* Skip unit type and address size. */ | |
5935 | info_ptr += 2; | |
5936 | } | |
5937 | ||
24aa364d | 5938 | return (sect_offset) read_offset (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
5939 | } |
5940 | ||
b83470bf TT |
5941 | /* A partial symtab that is used only for include files. */ |
5942 | struct dwarf2_include_psymtab : public partial_symtab | |
5943 | { | |
5944 | dwarf2_include_psymtab (const char *filename, struct objfile *objfile) | |
5945 | : partial_symtab (filename, objfile) | |
5946 | { | |
5947 | } | |
5948 | ||
5949 | void read_symtab (struct objfile *objfile) override | |
5950 | { | |
194d088f TV |
5951 | /* It's an include file, no symbols to read for it. |
5952 | Everything is in the includer symtab. */ | |
5953 | ||
5954 | /* The expansion of a dwarf2_include_psymtab is just a trigger for | |
5955 | expansion of the includer psymtab. We use the dependencies[0] field to | |
5956 | model the includer. But if we go the regular route of calling | |
5957 | expand_psymtab here, and having expand_psymtab call expand_dependencies | |
5958 | to expand the includer, we'll only use expand_psymtab on the includer | |
5959 | (making it a non-toplevel psymtab), while if we expand the includer via | |
5960 | another path, we'll use read_symtab (making it a toplevel psymtab). | |
5961 | So, don't pretend a dwarf2_include_psymtab is an actual toplevel | |
5962 | psymtab, and trigger read_symtab on the includer here directly. */ | |
5963 | includer ()->read_symtab (objfile); | |
b83470bf TT |
5964 | } |
5965 | ||
5966 | void expand_psymtab (struct objfile *objfile) override | |
5967 | { | |
194d088f TV |
5968 | /* This is not called by read_symtab, and should not be called by any |
5969 | expand_dependencies. */ | |
5970 | gdb_assert (false); | |
b83470bf TT |
5971 | } |
5972 | ||
5973 | bool readin_p () const override | |
5974 | { | |
194d088f | 5975 | return includer ()->readin_p (); |
b83470bf TT |
5976 | } |
5977 | ||
5978 | struct compunit_symtab *get_compunit_symtab () const override | |
5979 | { | |
5980 | return nullptr; | |
5981 | } | |
5982 | ||
5983 | private: | |
194d088f TV |
5984 | partial_symtab *includer () const |
5985 | { | |
5986 | /* An include psymtab has exactly one dependency: the psymtab that | |
5987 | includes it. */ | |
5988 | gdb_assert (this->number_of_dependencies == 1); | |
5989 | return this->dependencies[0]; | |
5990 | } | |
b83470bf TT |
5991 | }; |
5992 | ||
aaa75496 JB |
5993 | /* Allocate a new partial symtab for file named NAME and mark this new |
5994 | partial symtab as being an include of PST. */ | |
5995 | ||
5996 | static void | |
891813be | 5997 | dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst, |
aaa75496 JB |
5998 | struct objfile *objfile) |
5999 | { | |
b83470bf | 6000 | dwarf2_include_psymtab *subpst = new dwarf2_include_psymtab (name, objfile); |
aaa75496 | 6001 | |
fbd9ab74 JK |
6002 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
6003 | { | |
6004 | /* It shares objfile->objfile_obstack. */ | |
6005 | subpst->dirname = pst->dirname; | |
6006 | } | |
6007 | ||
a9342b62 | 6008 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
6009 | subpst->dependencies[0] = pst; |
6010 | subpst->number_of_dependencies = 1; | |
aaa75496 JB |
6011 | } |
6012 | ||
6013 | /* Read the Line Number Program data and extract the list of files | |
6014 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6015 | partial symtab for each of these included files. */ |
aaa75496 JB |
6016 | |
6017 | static void | |
6018 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 6019 | struct die_info *die, |
891813be | 6020 | dwarf2_psymtab *pst) |
aaa75496 | 6021 | { |
fff8551c | 6022 | line_header_up lh; |
d85a05f0 | 6023 | struct attribute *attr; |
aaa75496 | 6024 | |
d85a05f0 | 6025 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
435d3d88 | 6026 | if (attr != nullptr) |
9c541725 | 6027 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
6028 | if (lh == NULL) |
6029 | return; /* No linetable, so no includes. */ | |
6030 | ||
79748972 TT |
6031 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6032 | that we pass in the raw text_low here; that is ok because we're | |
6033 | only decoding the line table to make include partial symtabs, and | |
6034 | so the addresses aren't really used. */ | |
4ae976d1 | 6035 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6036 | pst->raw_text_low (), 1); |
aaa75496 JB |
6037 | } |
6038 | ||
348e048f | 6039 | static hashval_t |
52dc124a | 6040 | hash_signatured_type (const void *item) |
348e048f | 6041 | { |
9a3c8263 SM |
6042 | const struct signatured_type *sig_type |
6043 | = (const struct signatured_type *) item; | |
9a619af0 | 6044 | |
348e048f | 6045 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6046 | return sig_type->signature; |
348e048f DE |
6047 | } |
6048 | ||
6049 | static int | |
52dc124a | 6050 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6051 | { |
9a3c8263 SM |
6052 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6053 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6054 | |
348e048f DE |
6055 | return lhs->signature == rhs->signature; |
6056 | } | |
6057 | ||
1fd400ff TT |
6058 | /* Allocate a hash table for signatured types. */ |
6059 | ||
b0b6a987 | 6060 | static htab_up |
298e9637 | 6061 | allocate_signatured_type_table () |
1fd400ff | 6062 | { |
b0b6a987 TT |
6063 | return htab_up (htab_create_alloc (41, |
6064 | hash_signatured_type, | |
6065 | eq_signatured_type, | |
6066 | NULL, xcalloc, xfree)); | |
1fd400ff TT |
6067 | } |
6068 | ||
d467dd73 | 6069 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6070 | |
6071 | static int | |
d467dd73 | 6072 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6073 | { |
9a3c8263 | 6074 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6075 | std::vector<signatured_type *> *all_type_units |
6076 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6077 | |
b2bdb8cf | 6078 | all_type_units->push_back (sigt); |
1fd400ff TT |
6079 | |
6080 | return 1; | |
6081 | } | |
6082 | ||
78d4d2c5 | 6083 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6084 | and fill them into TYPES_HTAB. It will process only type units, |
6085 | therefore DW_UT_type. */ | |
c88ee1f0 | 6086 | |
78d4d2c5 | 6087 | static void |
ed2dc618 SM |
6088 | create_debug_type_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6089 | struct dwo_file *dwo_file, | |
b0b6a987 | 6090 | dwarf2_section_info *section, htab_up &types_htab, |
43988095 | 6091 | rcuh_kind section_kind) |
348e048f | 6092 | { |
3019eac3 | 6093 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 6094 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6095 | bfd *abfd; |
6096 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6097 | |
4bdcc0c1 DE |
6098 | abbrev_section = (dwo_file != NULL |
6099 | ? &dwo_file->sections.abbrev | |
6100 | : &dwarf2_per_objfile->abbrev); | |
6101 | ||
b4f54984 | 6102 | if (dwarf_read_debug) |
43988095 | 6103 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
96b79293 TT |
6104 | section->get_name (), |
6105 | abbrev_section->get_file_name ()); | |
09406207 | 6106 | |
96b79293 | 6107 | section->read (objfile); |
78d4d2c5 | 6108 | info_ptr = section->buffer; |
348e048f | 6109 | |
78d4d2c5 JK |
6110 | if (info_ptr == NULL) |
6111 | return; | |
348e048f | 6112 | |
78d4d2c5 JK |
6113 | /* We can't set abfd until now because the section may be empty or |
6114 | not present, in which case the bfd is unknown. */ | |
96b79293 | 6115 | abfd = section->get_bfd_owner (); |
348e048f | 6116 | |
c0ab21c2 TT |
6117 | /* We don't use cutu_reader here because we don't need to read |
6118 | any dies: the signature is in the header. */ | |
3019eac3 | 6119 | |
78d4d2c5 JK |
6120 | end_ptr = info_ptr + section->size; |
6121 | while (info_ptr < end_ptr) | |
6122 | { | |
78d4d2c5 JK |
6123 | struct signatured_type *sig_type; |
6124 | struct dwo_unit *dwo_tu; | |
6125 | void **slot; | |
6126 | const gdb_byte *ptr = info_ptr; | |
6127 | struct comp_unit_head header; | |
6128 | unsigned int length; | |
8b70b953 | 6129 | |
9c541725 | 6130 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6131 | |
a49dd8dd JK |
6132 | /* Initialize it due to a false compiler warning. */ |
6133 | header.signature = -1; | |
9c541725 | 6134 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6135 | |
78d4d2c5 JK |
6136 | /* We need to read the type's signature in order to build the hash |
6137 | table, but we don't need anything else just yet. */ | |
348e048f | 6138 | |
ed2dc618 | 6139 | ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, &header, section, |
43988095 | 6140 | abbrev_section, ptr, section_kind); |
348e048f | 6141 | |
4057dfde | 6142 | length = header.get_length (); |
6caca83c | 6143 | |
78d4d2c5 JK |
6144 | /* Skip dummy type units. */ |
6145 | if (ptr >= info_ptr + length | |
43988095 JK |
6146 | || peek_abbrev_code (abfd, ptr) == 0 |
6147 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
6148 | { |
6149 | info_ptr += length; | |
6150 | continue; | |
6151 | } | |
dee91e82 | 6152 | |
78d4d2c5 JK |
6153 | if (types_htab == NULL) |
6154 | { | |
6155 | if (dwo_file) | |
298e9637 | 6156 | types_htab = allocate_dwo_unit_table (); |
78d4d2c5 | 6157 | else |
298e9637 | 6158 | types_htab = allocate_signatured_type_table (); |
78d4d2c5 | 6159 | } |
8b70b953 | 6160 | |
78d4d2c5 JK |
6161 | if (dwo_file) |
6162 | { | |
6163 | sig_type = NULL; | |
6164 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6165 | struct dwo_unit); | |
6166 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 6167 | dwo_tu->signature = header.signature; |
9c541725 | 6168 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6169 | dwo_tu->section = section; |
9c541725 | 6170 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6171 | dwo_tu->length = length; |
6172 | } | |
6173 | else | |
6174 | { | |
6175 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6176 | The real type_offset is in the DWO file. */ | |
6177 | dwo_tu = NULL; | |
6178 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6179 | struct signatured_type); | |
43988095 | 6180 | sig_type->signature = header.signature; |
9c541725 | 6181 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
e3b94546 | 6182 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
78d4d2c5 JK |
6183 | sig_type->per_cu.is_debug_types = 1; |
6184 | sig_type->per_cu.section = section; | |
9c541725 | 6185 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6186 | sig_type->per_cu.length = length; |
6187 | } | |
6188 | ||
b0b6a987 | 6189 | slot = htab_find_slot (types_htab.get (), |
78d4d2c5 JK |
6190 | dwo_file ? (void*) dwo_tu : (void *) sig_type, |
6191 | INSERT); | |
6192 | gdb_assert (slot != NULL); | |
6193 | if (*slot != NULL) | |
6194 | { | |
9c541725 | 6195 | sect_offset dup_sect_off; |
0349ea22 | 6196 | |
3019eac3 DE |
6197 | if (dwo_file) |
6198 | { | |
78d4d2c5 JK |
6199 | const struct dwo_unit *dup_tu |
6200 | = (const struct dwo_unit *) *slot; | |
6201 | ||
9c541725 | 6202 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6203 | } |
6204 | else | |
6205 | { | |
78d4d2c5 JK |
6206 | const struct signatured_type *dup_tu |
6207 | = (const struct signatured_type *) *slot; | |
6208 | ||
9c541725 | 6209 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6210 | } |
8b70b953 | 6211 | |
b98664d3 | 6212 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6213 | " the entry at offset %s, signature %s"), |
6214 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6215 | hex_string (header.signature)); |
78d4d2c5 JK |
6216 | } |
6217 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6218 | |
78d4d2c5 | 6219 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6220 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6221 | sect_offset_str (sect_off), | |
43988095 | 6222 | hex_string (header.signature)); |
3019eac3 | 6223 | |
78d4d2c5 JK |
6224 | info_ptr += length; |
6225 | } | |
6226 | } | |
3019eac3 | 6227 | |
78d4d2c5 JK |
6228 | /* Create the hash table of all entries in the .debug_types |
6229 | (or .debug_types.dwo) section(s). | |
6230 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6231 | otherwise it is NULL. | |
b3c8eb43 | 6232 | |
78d4d2c5 | 6233 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6234 | |
78d4d2c5 | 6235 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6236 | |
78d4d2c5 | 6237 | static void |
ed2dc618 SM |
6238 | create_debug_types_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6239 | struct dwo_file *dwo_file, | |
fd5866f6 | 6240 | gdb::array_view<dwarf2_section_info> type_sections, |
b0b6a987 | 6241 | htab_up &types_htab) |
78d4d2c5 | 6242 | { |
fd5866f6 SM |
6243 | for (dwarf2_section_info §ion : type_sections) |
6244 | create_debug_type_hash_table (dwarf2_per_objfile, dwo_file, §ion, | |
ed2dc618 | 6245 | types_htab, rcuh_kind::TYPE); |
3019eac3 DE |
6246 | } |
6247 | ||
6248 | /* Create the hash table of all entries in the .debug_types section, | |
6249 | and initialize all_type_units. | |
6250 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6251 | otherwise non-zero. */ | |
6252 | ||
6253 | static int | |
ed2dc618 | 6254 | create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
3019eac3 | 6255 | { |
b0b6a987 | 6256 | htab_up types_htab; |
3019eac3 | 6257 | |
ed2dc618 SM |
6258 | create_debug_type_hash_table (dwarf2_per_objfile, NULL, |
6259 | &dwarf2_per_objfile->info, types_htab, | |
43988095 | 6260 | rcuh_kind::COMPILE); |
ed2dc618 SM |
6261 | create_debug_types_hash_table (dwarf2_per_objfile, NULL, |
6262 | dwarf2_per_objfile->types, types_htab); | |
3019eac3 DE |
6263 | if (types_htab == NULL) |
6264 | { | |
6265 | dwarf2_per_objfile->signatured_types = NULL; | |
6266 | return 0; | |
6267 | } | |
6268 | ||
b0b6a987 | 6269 | dwarf2_per_objfile->signatured_types = std::move (types_htab); |
348e048f | 6270 | |
b2bdb8cf | 6271 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
b0b6a987 TT |
6272 | dwarf2_per_objfile->all_type_units.reserve |
6273 | (htab_elements (dwarf2_per_objfile->signatured_types.get ())); | |
b2bdb8cf | 6274 | |
b0b6a987 TT |
6275 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types.get (), |
6276 | add_signatured_type_cu_to_table, | |
b2bdb8cf | 6277 | &dwarf2_per_objfile->all_type_units); |
1fd400ff | 6278 | |
348e048f DE |
6279 | return 1; |
6280 | } | |
6281 | ||
6aa5f3a6 DE |
6282 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
6283 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
6284 | Otherwise we find one. */ | |
6285 | ||
6286 | static struct signatured_type * | |
ed2dc618 SM |
6287 | add_type_unit (struct dwarf2_per_objfile *dwarf2_per_objfile, ULONGEST sig, |
6288 | void **slot) | |
6aa5f3a6 DE |
6289 | { |
6290 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6aa5f3a6 | 6291 | |
b2bdb8cf SM |
6292 | if (dwarf2_per_objfile->all_type_units.size () |
6293 | == dwarf2_per_objfile->all_type_units.capacity ()) | |
6294 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6295 | |
b2bdb8cf SM |
6296 | signatured_type *sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6297 | struct signatured_type); | |
6298 | ||
6299 | dwarf2_per_objfile->all_type_units.push_back (sig_type); | |
6aa5f3a6 DE |
6300 | sig_type->signature = sig; |
6301 | sig_type->per_cu.is_debug_types = 1; | |
6302 | if (dwarf2_per_objfile->using_index) | |
6303 | { | |
6304 | sig_type->per_cu.v.quick = | |
6305 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6306 | struct dwarf2_per_cu_quick_data); | |
6307 | } | |
6308 | ||
6309 | if (slot == NULL) | |
6310 | { | |
b0b6a987 | 6311 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types.get (), |
6aa5f3a6 DE |
6312 | sig_type, INSERT); |
6313 | } | |
6314 | gdb_assert (*slot == NULL); | |
6315 | *slot = sig_type; | |
6316 | /* The rest of sig_type must be filled in by the caller. */ | |
6317 | return sig_type; | |
6318 | } | |
6319 | ||
a2ce51a0 DE |
6320 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6321 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6322 | ||
6323 | static void | |
ed2dc618 | 6324 | fill_in_sig_entry_from_dwo_entry (struct dwarf2_per_objfile *dwarf2_per_objfile, |
a2ce51a0 DE |
6325 | struct signatured_type *sig_entry, |
6326 | struct dwo_unit *dwo_entry) | |
6327 | { | |
7ee85ab1 | 6328 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
6329 | gdb_assert (! sig_entry->per_cu.queued); |
6330 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
6331 | if (dwarf2_per_objfile->using_index) |
6332 | { | |
6333 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 6334 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
6335 | } |
6336 | else | |
6337 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6338 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6339 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6340 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6341 | gdb_assert (sig_entry->dwo_unit == NULL); |
6342 | ||
6343 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6344 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6345 | sig_entry->per_cu.length = dwo_entry->length; |
6346 | sig_entry->per_cu.reading_dwo_directly = 1; | |
e3b94546 | 6347 | sig_entry->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
a2ce51a0 DE |
6348 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6349 | sig_entry->dwo_unit = dwo_entry; | |
6350 | } | |
6351 | ||
6352 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6353 | If we haven't read the TU yet, create the signatured_type data structure |
6354 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6355 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6356 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6357 | containing that CU. Otherwise we could end up reading several other DWO | |
6358 | files (due to comdat folding) to process the transitive closure of all the | |
6359 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6360 | type signature that it needs. | |
a2ce51a0 DE |
6361 | We only do this for .gdb_index because in the psymtab case we already have |
6362 | to read all the DWOs to build the type unit groups. */ | |
6363 | ||
6364 | static struct signatured_type * | |
6365 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6366 | { | |
518817b3 SM |
6367 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6368 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 DE |
6369 | struct dwo_file *dwo_file; |
6370 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6371 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6372 | void **slot; |
a2ce51a0 DE |
6373 | |
6374 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
6375 | ||
6aa5f3a6 DE |
6376 | /* If TU skeletons have been removed then we may not have read in any |
6377 | TUs yet. */ | |
6378 | if (dwarf2_per_objfile->signatured_types == NULL) | |
298e9637 | 6379 | dwarf2_per_objfile->signatured_types = allocate_signatured_type_table (); |
a2ce51a0 DE |
6380 | |
6381 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6382 | Use the global signatured_types array to do our own comdat-folding |
6383 | of types. If this is the first time we're reading this TU, and | |
6384 | the TU has an entry in .gdb_index, replace the recorded data from | |
6385 | .gdb_index with this TU. */ | |
a2ce51a0 | 6386 | |
a2ce51a0 | 6387 | find_sig_entry.signature = sig; |
b0b6a987 | 6388 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types.get (), |
6aa5f3a6 | 6389 | &find_sig_entry, INSERT); |
9a3c8263 | 6390 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6391 | |
6392 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6393 | read. Don't reassign the global entry to point to this DWO if that's |
6394 | the case. Also note that if the TU is already being read, it may not | |
6395 | have come from a DWO, the program may be a mix of Fission-compiled | |
6396 | code and non-Fission-compiled code. */ | |
6397 | ||
6398 | /* Have we already tried to read this TU? | |
6399 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6400 | needn't exist in the global table yet). */ | |
6401 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6402 | return sig_entry; |
6403 | ||
6aa5f3a6 DE |
6404 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6405 | dwo_unit of the TU itself. */ | |
6406 | dwo_file = cu->dwo_unit->dwo_file; | |
6407 | ||
a2ce51a0 DE |
6408 | /* Ok, this is the first time we're reading this TU. */ |
6409 | if (dwo_file->tus == NULL) | |
6410 | return NULL; | |
6411 | find_dwo_entry.signature = sig; | |
b0b6a987 TT |
6412 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
6413 | &find_dwo_entry); | |
a2ce51a0 DE |
6414 | if (dwo_entry == NULL) |
6415 | return NULL; | |
6416 | ||
6aa5f3a6 DE |
6417 | /* If the global table doesn't have an entry for this TU, add one. */ |
6418 | if (sig_entry == NULL) | |
ed2dc618 | 6419 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6aa5f3a6 | 6420 | |
ed2dc618 | 6421 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6422 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6423 | return sig_entry; |
6424 | } | |
6425 | ||
a2ce51a0 DE |
6426 | /* Subroutine of lookup_signatured_type. |
6427 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6428 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6429 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6430 | |
6431 | static struct signatured_type * | |
6432 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6433 | { | |
518817b3 SM |
6434 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6435 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 6436 | struct dwp_file *dwp_file = get_dwp_file (dwarf2_per_objfile); |
a2ce51a0 DE |
6437 | struct dwo_unit *dwo_entry; |
6438 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6439 | void **slot; |
a2ce51a0 DE |
6440 | |
6441 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
6442 | gdb_assert (dwp_file != NULL); | |
6443 | ||
6aa5f3a6 DE |
6444 | /* If TU skeletons have been removed then we may not have read in any |
6445 | TUs yet. */ | |
6446 | if (dwarf2_per_objfile->signatured_types == NULL) | |
298e9637 | 6447 | dwarf2_per_objfile->signatured_types = allocate_signatured_type_table (); |
a2ce51a0 | 6448 | |
6aa5f3a6 | 6449 | find_sig_entry.signature = sig; |
b0b6a987 | 6450 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types.get (), |
6aa5f3a6 | 6451 | &find_sig_entry, INSERT); |
9a3c8263 | 6452 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6453 | |
6454 | /* Have we already tried to read this TU? | |
6455 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6456 | needn't exist in the global table yet). */ | |
6457 | if (sig_entry != NULL) | |
6458 | return sig_entry; | |
6459 | ||
a2ce51a0 DE |
6460 | if (dwp_file->tus == NULL) |
6461 | return NULL; | |
ed2dc618 | 6462 | dwo_entry = lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, NULL, |
57d63ce2 | 6463 | sig, 1 /* is_debug_types */); |
a2ce51a0 DE |
6464 | if (dwo_entry == NULL) |
6465 | return NULL; | |
6466 | ||
ed2dc618 SM |
6467 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6468 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6469 | |
a2ce51a0 DE |
6470 | return sig_entry; |
6471 | } | |
6472 | ||
380bca97 | 6473 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6474 | Returns NULL if signature SIG is not present in the table. |
6475 | It is up to the caller to complain about this. */ | |
348e048f DE |
6476 | |
6477 | static struct signatured_type * | |
a2ce51a0 | 6478 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6479 | { |
518817b3 SM |
6480 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6481 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 6482 | |
a2ce51a0 DE |
6483 | if (cu->dwo_unit |
6484 | && dwarf2_per_objfile->using_index) | |
6485 | { | |
6486 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6487 | These cases require special processing. */ | |
ed2dc618 | 6488 | if (get_dwp_file (dwarf2_per_objfile) == NULL) |
a2ce51a0 DE |
6489 | return lookup_dwo_signatured_type (cu, sig); |
6490 | else | |
6491 | return lookup_dwp_signatured_type (cu, sig); | |
6492 | } | |
6493 | else | |
6494 | { | |
6495 | struct signatured_type find_entry, *entry; | |
348e048f | 6496 | |
a2ce51a0 DE |
6497 | if (dwarf2_per_objfile->signatured_types == NULL) |
6498 | return NULL; | |
6499 | find_entry.signature = sig; | |
9a3c8263 | 6500 | entry = ((struct signatured_type *) |
b0b6a987 TT |
6501 | htab_find (dwarf2_per_objfile->signatured_types.get (), |
6502 | &find_entry)); | |
a2ce51a0 DE |
6503 | return entry; |
6504 | } | |
348e048f | 6505 | } |
18a8505e | 6506 | |
42e7ad6c | 6507 | /* Low level DIE reading support. */ |
348e048f | 6508 | |
d85a05f0 DJ |
6509 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6510 | ||
6511 | static void | |
6512 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6513 | struct dwarf2_cu *cu, |
3019eac3 | 6514 | struct dwarf2_section_info *section, |
685af9cd TT |
6515 | struct dwo_file *dwo_file, |
6516 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6517 | { |
fceca515 | 6518 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6519 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6520 | reader->cu = cu; |
3019eac3 | 6521 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6522 | reader->die_section = section; |
6523 | reader->buffer = section->buffer; | |
f664829e | 6524 | reader->buffer_end = section->buffer + section->size; |
685af9cd | 6525 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6526 | } |
6527 | ||
c0ab21c2 | 6528 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6529 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6530 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6531 | already. |
6532 | ||
6533 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6534 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6535 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6536 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6537 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6538 | STUB_COMP_DIR may be non-NULL. | |
3e225074 | 6539 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE |
b0c7bfa9 | 6540 | are filled in with the info of the DIE from the DWO file. |
685af9cd TT |
6541 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6542 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6543 | kept around for at least as long as *RESULT_READER. | |
6544 | ||
b0c7bfa9 DE |
6545 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6546 | ||
6547 | static int | |
6548 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
6549 | struct dwo_unit *dwo_unit, | |
b0c7bfa9 | 6550 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6551 | const char *stub_comp_dir, |
b0c7bfa9 | 6552 | struct die_reader_specs *result_reader, |
d521ce57 | 6553 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6554 | struct die_info **result_comp_unit_die, |
685af9cd | 6555 | abbrev_table_up *result_dwo_abbrev_table) |
b0c7bfa9 | 6556 | { |
ed2dc618 | 6557 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
b0c7bfa9 DE |
6558 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
6559 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 6560 | bfd *abfd; |
d521ce57 | 6561 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6562 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6563 | int i,num_extra_attrs; | |
6564 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6565 | struct die_info *comp_unit_die; |
6566 | ||
b0aeadb3 DE |
6567 | /* At most one of these may be provided. */ |
6568 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6569 | |
b0c7bfa9 DE |
6570 | /* These attributes aren't processed until later: |
6571 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6572 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6573 | referenced later. However, these attributes are found in the stub | |
6574 | which we won't have later. In order to not impose this complication | |
6575 | on the rest of the code, we read them here and copy them to the | |
6576 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6577 | |
6578 | stmt_list = NULL; | |
6579 | low_pc = NULL; | |
6580 | high_pc = NULL; | |
6581 | ranges = NULL; | |
6582 | comp_dir = NULL; | |
6583 | ||
6584 | if (stub_comp_unit_die != NULL) | |
6585 | { | |
6586 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6587 | DWO file. */ | |
6588 | if (! this_cu->is_debug_types) | |
6589 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
6590 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6591 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
6592 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
6593 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
6594 | ||
a39fdb41 | 6595 | cu->addr_base = stub_comp_unit_die->addr_base (); |
b0c7bfa9 | 6596 | |
18a8505e AT |
6597 | /* There should be a DW_AT_rnglists_base (DW_AT_GNU_ranges_base) attribute |
6598 | here (if needed). We need the value before we can process | |
6599 | DW_AT_ranges. */ | |
a39fdb41 | 6600 | cu->ranges_base = stub_comp_unit_die->ranges_base (); |
b0c7bfa9 | 6601 | } |
a2ce51a0 DE |
6602 | else if (stub_comp_dir != NULL) |
6603 | { | |
6604 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 6605 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
6606 | comp_dir->name = DW_AT_comp_dir; |
6607 | comp_dir->form = DW_FORM_string; | |
6608 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
6609 | DW_STRING (comp_dir) = stub_comp_dir; | |
6610 | } | |
b0c7bfa9 DE |
6611 | |
6612 | /* Set up for reading the DWO CU/TU. */ | |
6613 | cu->dwo_unit = dwo_unit; | |
685af9cd | 6614 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
6615 | section->read (objfile); |
6616 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
6617 | begin_info_ptr = info_ptr = (section->buffer |
6618 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 6619 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 DE |
6620 | |
6621 | if (this_cu->is_debug_types) | |
6622 | { | |
b0c7bfa9 DE |
6623 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
6624 | ||
ed2dc618 SM |
6625 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6626 | &cu->header, section, | |
b0c7bfa9 | 6627 | dwo_abbrev_section, |
43988095 | 6628 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 6629 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 6630 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
6631 | { |
6632 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 6633 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 6634 | hex_string (sig_type->signature), |
43988095 | 6635 | hex_string (cu->header.signature), |
9d8780f0 | 6636 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
6637 | bfd_get_filename (abfd)); |
6638 | } | |
9c541725 | 6639 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6640 | /* For DWOs coming from DWP files, we don't know the CU length |
6641 | nor the type's offset in the TU until now. */ | |
4057dfde | 6642 | dwo_unit->length = cu->header.get_length (); |
9c541725 | 6643 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
6644 | |
6645 | /* Establish the type offset that can be used to lookup the type. | |
6646 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
6647 | sig_type->type_offset_in_section |
6648 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
6649 | } |
6650 | else | |
6651 | { | |
ed2dc618 SM |
6652 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6653 | &cu->header, section, | |
b0c7bfa9 | 6654 | dwo_abbrev_section, |
43988095 | 6655 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 6656 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6657 | /* For DWOs coming from DWP files, we don't know the CU length |
6658 | until now. */ | |
4057dfde | 6659 | dwo_unit->length = cu->header.get_length (); |
b0c7bfa9 DE |
6660 | } |
6661 | ||
685af9cd | 6662 | *result_dwo_abbrev_table |
86de1d91 TT |
6663 | = abbrev_table::read (objfile, dwo_abbrev_section, |
6664 | cu->header.abbrev_sect_off); | |
685af9cd TT |
6665 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, |
6666 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
6667 | |
6668 | /* Read in the die, but leave space to copy over the attributes | |
6669 | from the stub. This has the benefit of simplifying the rest of | |
6670 | the code - all the work to maintain the illusion of a single | |
6671 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
6672 | num_extra_attrs = ((stmt_list != NULL) | |
6673 | + (low_pc != NULL) | |
6674 | + (high_pc != NULL) | |
6675 | + (ranges != NULL) | |
6676 | + (comp_dir != NULL)); | |
6677 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
3e225074 | 6678 | num_extra_attrs); |
b0c7bfa9 DE |
6679 | |
6680 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
6681 | comp_unit_die = *result_comp_unit_die; | |
6682 | i = comp_unit_die->num_attrs; | |
6683 | if (stmt_list != NULL) | |
6684 | comp_unit_die->attrs[i++] = *stmt_list; | |
6685 | if (low_pc != NULL) | |
6686 | comp_unit_die->attrs[i++] = *low_pc; | |
6687 | if (high_pc != NULL) | |
6688 | comp_unit_die->attrs[i++] = *high_pc; | |
6689 | if (ranges != NULL) | |
6690 | comp_unit_die->attrs[i++] = *ranges; | |
6691 | if (comp_dir != NULL) | |
6692 | comp_unit_die->attrs[i++] = *comp_dir; | |
6693 | comp_unit_die->num_attrs += num_extra_attrs; | |
6694 | ||
b4f54984 | 6695 | if (dwarf_die_debug) |
bf6af496 DE |
6696 | { |
6697 | fprintf_unfiltered (gdb_stdlog, | |
6698 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 6699 | section->get_name (), |
bf6af496 DE |
6700 | (unsigned) (begin_info_ptr - section->buffer), |
6701 | bfd_get_filename (abfd)); | |
b4f54984 | 6702 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
6703 | } |
6704 | ||
b0c7bfa9 DE |
6705 | /* Skip dummy compilation units. */ |
6706 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
6707 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
6708 | return 0; | |
6709 | ||
6710 | *result_info_ptr = info_ptr; | |
6711 | return 1; | |
6712 | } | |
6713 | ||
a084a2a6 AT |
6714 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
6715 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
6716 | signature is part of the header. */ | |
6717 | static gdb::optional<ULONGEST> | |
6718 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
6719 | { | |
6720 | if (cu->header.version >= 5) | |
6721 | return cu->header.signature; | |
6722 | struct attribute *attr; | |
6723 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
6724 | if (attr == nullptr) | |
6725 | return gdb::optional<ULONGEST> (); | |
6726 | return DW_UNSND (attr); | |
6727 | } | |
6728 | ||
c0ab21c2 | 6729 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6730 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 6731 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
6732 | |
6733 | static struct dwo_unit * | |
6734 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
c0ab21c2 TT |
6735 | struct die_info *comp_unit_die, |
6736 | const char *dwo_name) | |
b0c7bfa9 DE |
6737 | { |
6738 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 6739 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 6740 | const char *comp_dir; |
b0c7bfa9 | 6741 | |
a2ce51a0 DE |
6742 | gdb_assert (cu != NULL); |
6743 | ||
b0c7bfa9 | 6744 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 6745 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 6746 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 DE |
6747 | |
6748 | if (this_cu->is_debug_types) | |
6749 | { | |
6750 | struct signatured_type *sig_type; | |
6751 | ||
6752 | /* Since this_cu is the first member of struct signatured_type, | |
6753 | we can go from a pointer to one to a pointer to the other. */ | |
6754 | sig_type = (struct signatured_type *) this_cu; | |
b0c7bfa9 DE |
6755 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); |
6756 | } | |
6757 | else | |
6758 | { | |
a084a2a6 AT |
6759 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
6760 | if (!signature.has_value ()) | |
b0c7bfa9 DE |
6761 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
6762 | " [in module %s]"), | |
e3b94546 | 6763 | dwo_name, objfile_name (this_cu->dwarf2_per_objfile->objfile)); |
b0c7bfa9 | 6764 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, |
a084a2a6 | 6765 | *signature); |
b0c7bfa9 DE |
6766 | } |
6767 | ||
b0c7bfa9 DE |
6768 | return dwo_unit; |
6769 | } | |
6770 | ||
c0ab21c2 | 6771 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 6772 | See it for a description of the parameters. |
fcd3b13d | 6773 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 6774 | |
c0ab21c2 TT |
6775 | void |
6776 | cutu_reader::init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, | |
6751ebae | 6777 | int use_existing_cu) |
a2ce51a0 | 6778 | { |
a2ce51a0 | 6779 | struct signatured_type *sig_type; |
a2ce51a0 DE |
6780 | |
6781 | /* Verify we can do the following downcast, and that we have the | |
6782 | data we need. */ | |
6783 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
6784 | sig_type = (struct signatured_type *) this_cu; | |
6785 | gdb_assert (sig_type->dwo_unit != NULL); | |
6786 | ||
6aa5f3a6 DE |
6787 | if (use_existing_cu && this_cu->cu != NULL) |
6788 | { | |
6789 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 6790 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 6791 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
6792 | } |
6793 | else | |
6794 | { | |
6795 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
6796 | gdb_assert (this_cu->cu == NULL); | |
c0ab21c2 | 6797 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
6aa5f3a6 DE |
6798 | } |
6799 | ||
6800 | /* A future optimization, if needed, would be to use an existing | |
6801 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
6802 | could share abbrev tables. */ | |
a2ce51a0 DE |
6803 | |
6804 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, | |
a2ce51a0 DE |
6805 | NULL /* stub_comp_unit_die */, |
6806 | sig_type->dwo_unit->dwo_file->comp_dir, | |
4ebe4877 | 6807 | this, &info_ptr, |
3e225074 | 6808 | &comp_unit_die, |
c0ab21c2 | 6809 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
6810 | { |
6811 | /* Dummy die. */ | |
c0ab21c2 | 6812 | dummy_p = true; |
a2ce51a0 | 6813 | } |
a2ce51a0 DE |
6814 | } |
6815 | ||
fd820528 | 6816 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 6817 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 6818 | |
f4dc4d17 DE |
6819 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
6820 | Otherwise the table specified in the comp unit header is read in and used. | |
6821 | This is an optimization for when we already have the abbrev table. | |
6822 | ||
dee91e82 | 6823 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
6751ebae | 6824 | Otherwise, a new CU is allocated with xmalloc. */ |
aaa75496 | 6825 | |
c0ab21c2 TT |
6826 | cutu_reader::cutu_reader (struct dwarf2_per_cu_data *this_cu, |
6827 | struct abbrev_table *abbrev_table, | |
6751ebae | 6828 | int use_existing_cu, |
c0ab21c2 TT |
6829 | bool skip_partial) |
6830 | : die_reader_specs {}, | |
6751ebae | 6831 | m_this_cu (this_cu) |
c906108c | 6832 | { |
ed2dc618 | 6833 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 6834 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 6835 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 6836 | bfd *abfd = section->get_bfd_owner (); |
dee91e82 | 6837 | struct dwarf2_cu *cu; |
c0ab21c2 | 6838 | const gdb_byte *begin_info_ptr; |
dee91e82 | 6839 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 6840 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
6841 | /* Non-zero if CU currently points to a DWO file and we need to |
6842 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 6843 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 6844 | int rereading_dwo_cu = 0; |
c906108c | 6845 | |
b4f54984 | 6846 | if (dwarf_die_debug) |
9d8780f0 | 6847 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 6848 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 6849 | sect_offset_str (this_cu->sect_off)); |
09406207 | 6850 | |
a2ce51a0 DE |
6851 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
6852 | file (instead of going through the stub), short-circuit all of this. */ | |
6853 | if (this_cu->reading_dwo_directly) | |
6854 | { | |
6855 | /* Narrow down the scope of possibilities to have to understand. */ | |
6856 | gdb_assert (this_cu->is_debug_types); | |
6857 | gdb_assert (abbrev_table == NULL); | |
6751ebae | 6858 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu); |
a2ce51a0 DE |
6859 | return; |
6860 | } | |
6861 | ||
dee91e82 | 6862 | /* This is cheap if the section is already read in. */ |
96b79293 | 6863 | section->read (objfile); |
dee91e82 | 6864 | |
9c541725 | 6865 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
6866 | |
6867 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
6868 | |
6869 | if (use_existing_cu && this_cu->cu != NULL) | |
6870 | { | |
6871 | cu = this_cu->cu; | |
42e7ad6c DE |
6872 | /* If this CU is from a DWO file we need to start over, we need to |
6873 | refetch the attributes from the skeleton CU. | |
6874 | This could be optimized by retrieving those attributes from when we | |
6875 | were here the first time: the previous comp_unit_die was stored in | |
6876 | comp_unit_obstack. But there's no data yet that we need this | |
6877 | optimization. */ | |
6878 | if (cu->dwo_unit != NULL) | |
6879 | rereading_dwo_cu = 1; | |
dee91e82 DE |
6880 | } |
6881 | else | |
6882 | { | |
6883 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
6884 | gdb_assert (this_cu->cu == NULL); | |
c0ab21c2 TT |
6885 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
6886 | cu = m_new_cu.get (); | |
42e7ad6c | 6887 | } |
dee91e82 | 6888 | |
b0c7bfa9 | 6889 | /* Get the header. */ |
9c541725 | 6890 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
6891 | { |
6892 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 6893 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
6894 | } |
6895 | else | |
6896 | { | |
3019eac3 | 6897 | if (this_cu->is_debug_types) |
dee91e82 | 6898 | { |
ed2dc618 SM |
6899 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6900 | &cu->header, section, | |
4bdcc0c1 | 6901 | abbrev_section, info_ptr, |
43988095 | 6902 | rcuh_kind::TYPE); |
dee91e82 | 6903 | |
42e7ad6c DE |
6904 | /* Since per_cu is the first member of struct signatured_type, |
6905 | we can go from a pointer to one to a pointer to the other. */ | |
6906 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 6907 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
6908 | gdb_assert (sig_type->type_offset_in_tu |
6909 | == cu->header.type_cu_offset_in_tu); | |
6910 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 6911 | |
42e7ad6c DE |
6912 | /* LENGTH has not been set yet for type units if we're |
6913 | using .gdb_index. */ | |
4057dfde | 6914 | this_cu->length = cu->header.get_length (); |
3019eac3 DE |
6915 | |
6916 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
6917 | sig_type->type_offset_in_section = |
6918 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
6919 | |
6920 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
6921 | } |
6922 | else | |
6923 | { | |
ed2dc618 SM |
6924 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6925 | &cu->header, section, | |
4bdcc0c1 | 6926 | abbrev_section, |
43988095 JK |
6927 | info_ptr, |
6928 | rcuh_kind::COMPILE); | |
dee91e82 | 6929 | |
9c541725 | 6930 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
4057dfde | 6931 | gdb_assert (this_cu->length == cu->header.get_length ()); |
43988095 | 6932 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
6933 | } |
6934 | } | |
10b3939b | 6935 | |
6caca83c | 6936 | /* Skip dummy compilation units. */ |
dee91e82 | 6937 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 6938 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
6939 | { |
6940 | dummy_p = true; | |
6941 | return; | |
6942 | } | |
6caca83c | 6943 | |
433df2d4 DE |
6944 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
6945 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 6946 | done. */ |
f4dc4d17 | 6947 | if (abbrev_table != NULL) |
685af9cd TT |
6948 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
6949 | else | |
f4dc4d17 | 6950 | { |
c0ab21c2 | 6951 | m_abbrev_table_holder |
86de1d91 TT |
6952 | = abbrev_table::read (objfile, abbrev_section, |
6953 | cu->header.abbrev_sect_off); | |
c0ab21c2 | 6954 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 6955 | } |
af703f96 | 6956 | |
dee91e82 | 6957 | /* Read the top level CU/TU die. */ |
c0ab21c2 | 6958 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
3e225074 | 6959 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
93311388 | 6960 | |
58f0c718 | 6961 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
6962 | { |
6963 | dummy_p = true; | |
6964 | return; | |
6965 | } | |
58f0c718 | 6966 | |
b0c7bfa9 | 6967 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
6968 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
6969 | table from the DWO file and pass the ownership over to us. It will be | |
6970 | referenced from READER, so we must make sure to free it after we're done | |
6971 | with READER. | |
6972 | ||
b0c7bfa9 DE |
6973 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
6974 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 6975 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 6976 | if (dwo_name != nullptr) |
3019eac3 | 6977 | { |
3019eac3 | 6978 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 6979 | struct die_info *dwo_comp_unit_die; |
3019eac3 | 6980 | |
3e225074 | 6981 | if (comp_unit_die->has_children) |
6a506a2d | 6982 | { |
b98664d3 | 6983 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
6984 | " has children (offset %s) [in module %s]"), |
6985 | sect_offset_str (this_cu->sect_off), | |
6986 | bfd_get_filename (abfd)); | |
6a506a2d | 6987 | } |
c0ab21c2 | 6988 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die, dwo_name); |
6a506a2d | 6989 | if (dwo_unit != NULL) |
3019eac3 | 6990 | { |
6a506a2d | 6991 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
a2ce51a0 | 6992 | comp_unit_die, NULL, |
c0ab21c2 | 6993 | this, &info_ptr, |
3e225074 | 6994 | &dwo_comp_unit_die, |
c0ab21c2 | 6995 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
6996 | { |
6997 | /* Dummy die. */ | |
c0ab21c2 | 6998 | dummy_p = true; |
6a506a2d DE |
6999 | return; |
7000 | } | |
7001 | comp_unit_die = dwo_comp_unit_die; | |
7002 | } | |
7003 | else | |
7004 | { | |
7005 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7006 | the stub. A complaint has already been logged. There's | |
7007 | not much more we can do except pass on the stub DIE to | |
7008 | die_reader_func. We don't want to throw an error on bad | |
7009 | debug info. */ | |
3019eac3 DE |
7010 | } |
7011 | } | |
c0ab21c2 | 7012 | } |
3019eac3 | 7013 | |
6751ebae TT |
7014 | void |
7015 | cutu_reader::keep () | |
c0ab21c2 | 7016 | { |
b0c7bfa9 | 7017 | /* Done, clean up. */ |
6751ebae TT |
7018 | gdb_assert (!dummy_p); |
7019 | if (m_new_cu != NULL) | |
348e048f | 7020 | { |
c0ab21c2 TT |
7021 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7022 | = m_this_cu->dwarf2_per_objfile; | |
fcd3b13d | 7023 | /* Link this CU into read_in_chain. */ |
c0ab21c2 TT |
7024 | m_this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; |
7025 | dwarf2_per_objfile->read_in_chain = m_this_cu; | |
fcd3b13d | 7026 | /* The chain owns it now. */ |
c0ab21c2 | 7027 | m_new_cu.release (); |
348e048f | 7028 | } |
dee91e82 DE |
7029 | } |
7030 | ||
18a8505e AT |
7031 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
7032 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
7033 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7034 | |
7035 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7036 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7037 | |
7038 | We fill in THIS_CU->length. | |
7039 | ||
dee91e82 | 7040 | THIS_CU->cu is always freed when done. |
3019eac3 | 7041 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
7042 | to care whether it refers to the "main" CU or the DWO CU. |
7043 | ||
7044 | When parent_cu is passed, it is used to provide a default value for | |
7045 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 7046 | |
c0ab21c2 TT |
7047 | cutu_reader::cutu_reader (struct dwarf2_per_cu_data *this_cu, |
7048 | struct dwarf2_cu *parent_cu, | |
7049 | struct dwo_file *dwo_file) | |
7050 | : die_reader_specs {}, | |
7051 | m_this_cu (this_cu) | |
dee91e82 | 7052 | { |
ed2dc618 | 7053 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7054 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7055 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7056 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 7057 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7058 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7059 | |
b4f54984 | 7060 | if (dwarf_die_debug) |
9d8780f0 | 7061 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7062 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7063 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7064 | |
dee91e82 DE |
7065 | gdb_assert (this_cu->cu == NULL); |
7066 | ||
33e80786 DE |
7067 | abbrev_section = (dwo_file != NULL |
7068 | ? &dwo_file->sections.abbrev | |
7069 | : get_abbrev_section_for_cu (this_cu)); | |
7070 | ||
dee91e82 | 7071 | /* This is cheap if the section is already read in. */ |
96b79293 | 7072 | section->read (objfile); |
dee91e82 | 7073 | |
c0ab21c2 | 7074 | m_new_cu.reset (new dwarf2_cu (this_cu)); |
dee91e82 | 7075 | |
9c541725 | 7076 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
ed2dc618 | 7077 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
c0ab21c2 | 7078 | &m_new_cu->header, section, |
4bdcc0c1 | 7079 | abbrev_section, info_ptr, |
43988095 JK |
7080 | (this_cu->is_debug_types |
7081 | ? rcuh_kind::TYPE | |
7082 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7083 | |
18a8505e AT |
7084 | if (parent_cu != nullptr) |
7085 | { | |
c0ab21c2 TT |
7086 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
7087 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 7088 | } |
4057dfde | 7089 | this_cu->length = m_new_cu->header.get_length (); |
dee91e82 DE |
7090 | |
7091 | /* Skip dummy compilation units. */ | |
7092 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7093 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
7094 | { |
7095 | dummy_p = true; | |
7096 | return; | |
7097 | } | |
72bf9492 | 7098 | |
c0ab21c2 | 7099 | m_abbrev_table_holder |
86de1d91 TT |
7100 | = abbrev_table::read (objfile, abbrev_section, |
7101 | m_new_cu->header.abbrev_sect_off); | |
dee91e82 | 7102 | |
c0ab21c2 TT |
7103 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
7104 | m_abbrev_table_holder.get ()); | |
3e225074 | 7105 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
dee91e82 DE |
7106 | } |
7107 | ||
0018ea6f DE |
7108 | \f |
7109 | /* Type Unit Groups. | |
dee91e82 | 7110 | |
0018ea6f DE |
7111 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7112 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7113 | so that all types coming from the same compilation (.o file) are grouped | |
7114 | together. A future step could be to put the types in the same symtab as | |
7115 | the CU the types ultimately came from. */ | |
ff013f42 | 7116 | |
f4dc4d17 DE |
7117 | static hashval_t |
7118 | hash_type_unit_group (const void *item) | |
7119 | { | |
9a3c8263 SM |
7120 | const struct type_unit_group *tu_group |
7121 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7122 | |
094b34ac | 7123 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7124 | } |
348e048f DE |
7125 | |
7126 | static int | |
f4dc4d17 | 7127 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7128 | { |
9a3c8263 SM |
7129 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7130 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7131 | |
094b34ac | 7132 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7133 | } |
348e048f | 7134 | |
f4dc4d17 DE |
7135 | /* Allocate a hash table for type unit groups. */ |
7136 | ||
eaa5fa8b | 7137 | static htab_up |
298e9637 | 7138 | allocate_type_unit_groups_table () |
f4dc4d17 | 7139 | { |
eaa5fa8b TT |
7140 | return htab_up (htab_create_alloc (3, |
7141 | hash_type_unit_group, | |
7142 | eq_type_unit_group, | |
7143 | NULL, xcalloc, xfree)); | |
f4dc4d17 | 7144 | } |
dee91e82 | 7145 | |
f4dc4d17 DE |
7146 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7147 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7148 | of any one psymtab grow too big. */ | |
7149 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7150 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7151 | |
094b34ac | 7152 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7153 | Create the type_unit_group object used to hold one or more TUs. */ |
7154 | ||
7155 | static struct type_unit_group * | |
094b34ac | 7156 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7157 | { |
518817b3 SM |
7158 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7159 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 | 7160 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 7161 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7162 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
7163 | |
7164 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7165 | struct type_unit_group); | |
094b34ac | 7166 | per_cu = &tu_group->per_cu; |
518817b3 | 7167 | per_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
f4dc4d17 | 7168 | |
094b34ac DE |
7169 | if (dwarf2_per_objfile->using_index) |
7170 | { | |
7171 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7172 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
7173 | } |
7174 | else | |
7175 | { | |
9c541725 | 7176 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7177 | dwarf2_psymtab *pst; |
528e1572 | 7178 | std::string name; |
094b34ac DE |
7179 | |
7180 | /* Give the symtab a useful name for debug purposes. */ | |
7181 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7182 | name = string_printf ("<type_units_%d>", |
7183 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7184 | else |
528e1572 | 7185 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7186 | |
528e1572 | 7187 | pst = create_partial_symtab (per_cu, name.c_str ()); |
6d94535f | 7188 | pst->anonymous = true; |
094b34ac | 7189 | } |
f4dc4d17 | 7190 | |
094b34ac | 7191 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7192 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7193 | |
7194 | return tu_group; | |
7195 | } | |
7196 | ||
094b34ac DE |
7197 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7198 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7199 | |
7200 | static struct type_unit_group * | |
ff39bb5e | 7201 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7202 | { |
518817b3 SM |
7203 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7204 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 DE |
7205 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
7206 | struct type_unit_group *tu_group; | |
7207 | void **slot; | |
7208 | unsigned int line_offset; | |
7209 | struct type_unit_group type_unit_group_for_lookup; | |
7210 | ||
7211 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
298e9637 | 7212 | dwarf2_per_objfile->type_unit_groups = allocate_type_unit_groups_table (); |
f4dc4d17 DE |
7213 | |
7214 | /* Do we need to create a new group, or can we use an existing one? */ | |
7215 | ||
7216 | if (stmt_list) | |
7217 | { | |
7218 | line_offset = DW_UNSND (stmt_list); | |
7219 | ++tu_stats->nr_symtab_sharers; | |
7220 | } | |
7221 | else | |
7222 | { | |
7223 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7224 | We can do various things here like create one group per TU or | |
7225 | spread them over multiple groups to split up the expansion work. | |
7226 | To avoid worst case scenarios (too many groups or too large groups) | |
7227 | we, umm, group them in bunches. */ | |
7228 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7229 | | (tu_stats->nr_stmt_less_type_units | |
7230 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7231 | ++tu_stats->nr_stmt_less_type_units; | |
7232 | } | |
7233 | ||
094b34ac | 7234 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7235 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
eaa5fa8b | 7236 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups.get (), |
f4dc4d17 DE |
7237 | &type_unit_group_for_lookup, INSERT); |
7238 | if (*slot != NULL) | |
7239 | { | |
9a3c8263 | 7240 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7241 | gdb_assert (tu_group != NULL); |
7242 | } | |
7243 | else | |
7244 | { | |
9c541725 | 7245 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7246 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7247 | *slot = tu_group; |
7248 | ++tu_stats->nr_symtabs; | |
7249 | } | |
7250 | ||
7251 | return tu_group; | |
7252 | } | |
0018ea6f DE |
7253 | \f |
7254 | /* Partial symbol tables. */ | |
7255 | ||
7256 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7257 | ||
7258 | The caller must fill in the following details: | |
7259 | dirname, textlow, texthigh. */ | |
7260 | ||
891813be | 7261 | static dwarf2_psymtab * |
0018ea6f DE |
7262 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) |
7263 | { | |
e3b94546 | 7264 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
891813be | 7265 | dwarf2_psymtab *pst; |
0018ea6f | 7266 | |
9f4e76a4 | 7267 | pst = new dwarf2_psymtab (name, objfile, per_cu); |
0018ea6f | 7268 | |
6d94535f | 7269 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7270 | |
7271 | /* This is the glue that links PST into GDB's symbol API. */ | |
0018ea6f DE |
7272 | per_cu->v.psymtab = pst; |
7273 | ||
7274 | return pst; | |
7275 | } | |
7276 | ||
c0ab21c2 | 7277 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7278 | |
7279 | static void | |
7280 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7281 | const gdb_byte *info_ptr, |
0018ea6f | 7282 | struct die_info *comp_unit_die, |
c0ab21c2 | 7283 | enum language pretend_language) |
0018ea6f DE |
7284 | { |
7285 | struct dwarf2_cu *cu = reader->cu; | |
518817b3 | 7286 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
08feed99 | 7287 | struct gdbarch *gdbarch = objfile->arch (); |
0018ea6f | 7288 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7289 | CORE_ADDR baseaddr; |
7290 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7291 | dwarf2_psymtab *pst; |
3a2b436a | 7292 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7293 | const char *filename; |
0018ea6f | 7294 | |
0018ea6f DE |
7295 | gdb_assert (! per_cu->is_debug_types); |
7296 | ||
c0ab21c2 | 7297 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7298 | |
0018ea6f | 7299 | /* Allocate a new partial symbol table structure. */ |
2e927613 TV |
7300 | gdb::unique_xmalloc_ptr<char> debug_filename; |
7301 | static const char artificial[] = "<artificial>"; | |
7d45c7c3 KB |
7302 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7303 | if (filename == NULL) | |
0018ea6f | 7304 | filename = ""; |
2e927613 TV |
7305 | else if (strcmp (filename, artificial) == 0) |
7306 | { | |
7307 | debug_filename.reset (concat (artificial, "@", | |
85f0dd3c TV |
7308 | sect_offset_str (per_cu->sect_off), |
7309 | (char *) NULL)); | |
2e927613 TV |
7310 | filename = debug_filename.get (); |
7311 | } | |
0018ea6f DE |
7312 | |
7313 | pst = create_partial_symtab (per_cu, filename); | |
7314 | ||
7315 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7316 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7317 | |
b3b3bada | 7318 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7319 | |
7320 | dwarf2_find_base_address (comp_unit_die, cu); | |
7321 | ||
7322 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7323 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7324 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7325 | &best_highpc, cu, pst); | |
7326 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7327 | { |
7328 | CORE_ADDR low | |
7329 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7330 | - baseaddr); | |
7331 | CORE_ADDR high | |
7332 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7333 | - baseaddr - 1); | |
7334 | /* Store the contiguous range if it is not empty; it can be | |
7335 | empty for CUs with no code. */ | |
d320c2b5 TT |
7336 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
7337 | low, high, pst); | |
79748972 | 7338 | } |
0018ea6f DE |
7339 | |
7340 | /* Check if comp unit has_children. | |
7341 | If so, read the rest of the partial symbols from this comp unit. | |
7342 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7343 | if (comp_unit_die->has_children) |
0018ea6f DE |
7344 | { |
7345 | struct partial_die_info *first_die; | |
7346 | CORE_ADDR lowpc, highpc; | |
7347 | ||
7348 | lowpc = ((CORE_ADDR) -1); | |
7349 | highpc = ((CORE_ADDR) 0); | |
7350 | ||
7351 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7352 | ||
7353 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7354 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7355 | |
7356 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7357 | complaints from `maint check'. */ | |
7358 | if (lowpc == ((CORE_ADDR) -1)) | |
7359 | lowpc = highpc; | |
7360 | ||
7361 | /* If the compilation unit didn't have an explicit address range, | |
7362 | then use the information extracted from its child dies. */ | |
e385593e | 7363 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7364 | { |
7365 | best_lowpc = lowpc; | |
7366 | best_highpc = highpc; | |
7367 | } | |
7368 | } | |
4ae976d1 | 7369 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7370 | best_lowpc + baseaddr) |
7371 | - baseaddr); | |
4ae976d1 | 7372 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7373 | best_highpc + baseaddr) |
7374 | - baseaddr); | |
0018ea6f | 7375 | |
8763cede | 7376 | end_psymtab_common (objfile, pst); |
0018ea6f | 7377 | |
ae640021 | 7378 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7379 | { |
7380 | int i; | |
ae640021 | 7381 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7382 | |
7383 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7384 | post-pass. */ | |
7385 | pst->number_of_dependencies = len; | |
a9342b62 TT |
7386 | pst->dependencies |
7387 | = objfile->partial_symtabs->allocate_dependencies (len); | |
ae640021 AB |
7388 | for (i = 0; i < len; ++i) |
7389 | { | |
7390 | pst->dependencies[i] | |
7391 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7392 | } | |
0018ea6f | 7393 | |
ae640021 | 7394 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7395 | } |
7396 | ||
7397 | /* Get the list of files included in the current compilation unit, | |
7398 | and build a psymtab for each of them. */ | |
7399 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7400 | ||
b4f54984 | 7401 | if (dwarf_read_debug) |
b926417a TT |
7402 | fprintf_unfiltered (gdb_stdlog, |
7403 | "Psymtab for %s unit @%s: %s - %s" | |
7404 | ", %d global, %d static syms\n", | |
7405 | per_cu->is_debug_types ? "type" : "comp", | |
7406 | sect_offset_str (per_cu->sect_off), | |
7407 | paddress (gdbarch, pst->text_low (objfile)), | |
7408 | paddress (gdbarch, pst->text_high (objfile)), | |
7409 | pst->n_global_syms, pst->n_static_syms); | |
0018ea6f DE |
7410 | } |
7411 | ||
7412 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7413 | Process compilation unit THIS_CU for a psymtab. */ | |
7414 | ||
7415 | static void | |
7416 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
135f5437 | 7417 | bool want_partial_unit, |
b93601f3 | 7418 | enum language pretend_language) |
0018ea6f DE |
7419 | { |
7420 | /* If this compilation unit was already read in, free the | |
7421 | cached copy in order to read it in again. This is | |
7422 | necessary because we skipped some symbols when we first | |
7423 | read in the compilation unit (see load_partial_dies). | |
7424 | This problem could be avoided, but the benefit is unclear. */ | |
7425 | if (this_cu->cu != NULL) | |
7426 | free_one_cached_comp_unit (this_cu); | |
7427 | ||
6751ebae | 7428 | cutu_reader reader (this_cu, NULL, 0, false); |
c0ab21c2 | 7429 | |
58990295 TV |
7430 | switch (reader.comp_unit_die->tag) |
7431 | { | |
7432 | case DW_TAG_compile_unit: | |
7433 | this_cu->unit_type = DW_UT_compile; | |
7434 | break; | |
7435 | case DW_TAG_partial_unit: | |
7436 | this_cu->unit_type = DW_UT_partial; | |
7437 | break; | |
7438 | default: | |
7439 | abort (); | |
7440 | } | |
7441 | ||
c0ab21c2 | 7442 | if (reader.dummy_p) |
f1902523 | 7443 | { |
c0ab21c2 | 7444 | /* Nothing. */ |
f1902523 | 7445 | } |
c0ab21c2 | 7446 | else if (this_cu->is_debug_types) |
3e225074 TT |
7447 | build_type_psymtabs_reader (&reader, reader.info_ptr, |
7448 | reader.comp_unit_die); | |
135f5437 TT |
7449 | else if (want_partial_unit |
7450 | || reader.comp_unit_die->tag != DW_TAG_partial_unit) | |
c0ab21c2 TT |
7451 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, |
7452 | reader.comp_unit_die, | |
c0ab21c2 | 7453 | pretend_language); |
0018ea6f | 7454 | |
58990295 TV |
7455 | this_cu->lang = this_cu->cu->language; |
7456 | ||
0018ea6f | 7457 | /* Age out any secondary CUs. */ |
ed2dc618 | 7458 | age_cached_comp_units (this_cu->dwarf2_per_objfile); |
0018ea6f | 7459 | } |
f4dc4d17 DE |
7460 | |
7461 | /* Reader function for build_type_psymtabs. */ | |
7462 | ||
7463 | static void | |
7464 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7465 | const gdb_byte *info_ptr, |
3e225074 | 7466 | struct die_info *type_unit_die) |
f4dc4d17 | 7467 | { |
ed2dc618 | 7468 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 7469 | = reader->cu->per_cu->dwarf2_per_objfile; |
f4dc4d17 DE |
7470 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7471 | struct dwarf2_cu *cu = reader->cu; | |
7472 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7473 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7474 | struct type_unit_group *tu_group; |
7475 | struct attribute *attr; | |
7476 | struct partial_die_info *first_die; | |
7477 | CORE_ADDR lowpc, highpc; | |
891813be | 7478 | dwarf2_psymtab *pst; |
f4dc4d17 | 7479 | |
0186c6a7 DE |
7480 | gdb_assert (per_cu->is_debug_types); |
7481 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 7482 | |
3e225074 | 7483 | if (! type_unit_die->has_children) |
f4dc4d17 DE |
7484 | return; |
7485 | ||
052c8bb8 | 7486 | attr = type_unit_die->attr (DW_AT_stmt_list); |
094b34ac | 7487 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7488 | |
df07e2c7 | 7489 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7490 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7491 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7492 | |
7493 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
f4dc4d17 | 7494 | pst = create_partial_symtab (per_cu, ""); |
6d94535f | 7495 | pst->anonymous = true; |
f4dc4d17 DE |
7496 | |
7497 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7498 | ||
7499 | lowpc = (CORE_ADDR) -1; | |
7500 | highpc = (CORE_ADDR) 0; | |
7501 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7502 | ||
8763cede | 7503 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
7504 | } |
7505 | ||
73051182 DE |
7506 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7507 | ||
7508 | struct tu_abbrev_offset | |
7509 | { | |
b2bdb8cf SM |
7510 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7511 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7512 | {} | |
7513 | ||
7514 | signatured_type *sig_type; | |
73051182 DE |
7515 | sect_offset abbrev_offset; |
7516 | }; | |
7517 | ||
484cf504 | 7518 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 7519 | |
484cf504 TT |
7520 | static bool |
7521 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7522 | const struct tu_abbrev_offset &b) | |
73051182 | 7523 | { |
484cf504 | 7524 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7525 | } |
7526 | ||
7527 | /* Efficiently read all the type units. | |
7528 | This does the bulk of the work for build_type_psymtabs. | |
7529 | ||
7530 | The efficiency is because we sort TUs by the abbrev table they use and | |
7531 | only read each abbrev table once. In one program there are 200K TUs | |
7532 | sharing 8K abbrev tables. | |
7533 | ||
7534 | The main purpose of this function is to support building the | |
7535 | dwarf2_per_objfile->type_unit_groups table. | |
7536 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
7537 | can collapse the search space by grouping them by stmt_list. | |
7538 | The savings can be significant, in the same program from above the 200K TUs | |
7539 | share 8K stmt_list tables. | |
7540 | ||
7541 | FUNC is expected to call get_type_unit_group, which will create the | |
7542 | struct type_unit_group if necessary and add it to | |
7543 | dwarf2_per_objfile->type_unit_groups. */ | |
7544 | ||
7545 | static void | |
ed2dc618 | 7546 | build_type_psymtabs_1 (struct dwarf2_per_objfile *dwarf2_per_objfile) |
73051182 | 7547 | { |
73051182 | 7548 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
685af9cd | 7549 | abbrev_table_up abbrev_table; |
73051182 | 7550 | sect_offset abbrev_offset; |
73051182 DE |
7551 | |
7552 | /* It's up to the caller to not call us multiple times. */ | |
7553 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
7554 | ||
b2bdb8cf | 7555 | if (dwarf2_per_objfile->all_type_units.empty ()) |
73051182 DE |
7556 | return; |
7557 | ||
7558 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7559 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7560 | read each abbrev table in. | |
7561 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7562 | This is simpler and efficient enough for now. | |
7563 | ||
7564 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7565 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7566 | stmt_list value too so in practice this should work well. | |
7567 | ||
7568 | The basic algorithm here is: | |
7569 | ||
7570 | sort TUs by abbrev table | |
7571 | for each TU with same abbrev table: | |
7572 | read abbrev table if first user | |
7573 | read TU top level DIE | |
7574 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7575 | call FUNC */ | |
7576 | ||
b4f54984 | 7577 | if (dwarf_read_debug) |
73051182 DE |
7578 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
7579 | ||
7580 | /* Sort in a separate table to maintain the order of all_type_units | |
7581 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf SM |
7582 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
7583 | sorted_by_abbrev.reserve (dwarf2_per_objfile->all_type_units.size ()); | |
7584 | ||
7585 | for (signatured_type *sig_type : dwarf2_per_objfile->all_type_units) | |
7586 | sorted_by_abbrev.emplace_back | |
7587 | (sig_type, read_abbrev_offset (dwarf2_per_objfile, | |
7588 | sig_type->per_cu.section, | |
7589 | sig_type->per_cu.sect_off)); | |
73051182 | 7590 | |
484cf504 TT |
7591 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7592 | sort_tu_by_abbrev_offset); | |
73051182 | 7593 | |
9c541725 | 7594 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 7595 | |
b2bdb8cf | 7596 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 7597 | { |
73051182 DE |
7598 | /* Switch to the next abbrev table if necessary. */ |
7599 | if (abbrev_table == NULL | |
b2bdb8cf | 7600 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 7601 | { |
b2bdb8cf | 7602 | abbrev_offset = tu.abbrev_offset; |
73051182 | 7603 | abbrev_table = |
86de1d91 TT |
7604 | abbrev_table::read (dwarf2_per_objfile->objfile, |
7605 | &dwarf2_per_objfile->abbrev, | |
7606 | abbrev_offset); | |
73051182 DE |
7607 | ++tu_stats->nr_uniq_abbrev_tables; |
7608 | } | |
7609 | ||
c0ab21c2 | 7610 | cutu_reader reader (&tu.sig_type->per_cu, abbrev_table.get (), |
6751ebae | 7611 | 0, false); |
c0ab21c2 TT |
7612 | if (!reader.dummy_p) |
7613 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7614 | reader.comp_unit_die); |
73051182 | 7615 | } |
6aa5f3a6 | 7616 | } |
73051182 | 7617 | |
6aa5f3a6 DE |
7618 | /* Print collected type unit statistics. */ |
7619 | ||
7620 | static void | |
ed2dc618 | 7621 | print_tu_stats (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
7622 | { |
7623 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
7624 | ||
7625 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf SM |
7626 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
7627 | dwarf2_per_objfile->all_type_units.size ()); | |
6aa5f3a6 DE |
7628 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
7629 | tu_stats->nr_uniq_abbrev_tables); | |
7630 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
7631 | tu_stats->nr_symtabs); | |
7632 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
7633 | tu_stats->nr_symtab_sharers); | |
7634 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
7635 | tu_stats->nr_stmt_less_type_units); | |
7636 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
7637 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
7638 | } |
7639 | ||
f4dc4d17 DE |
7640 | /* Traversal function for build_type_psymtabs. */ |
7641 | ||
7642 | static int | |
7643 | build_type_psymtab_dependencies (void **slot, void *info) | |
7644 | { | |
ed2dc618 SM |
7645 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7646 | = (struct dwarf2_per_objfile *) info; | |
f4dc4d17 DE |
7647 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7648 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 7649 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 7650 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 7651 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
7652 | int i; |
7653 | ||
7654 | gdb_assert (len > 0); | |
197400e8 | 7655 | gdb_assert (per_cu->type_unit_group_p ()); |
f4dc4d17 DE |
7656 | |
7657 | pst->number_of_dependencies = len; | |
a9342b62 | 7658 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 7659 | for (i = 0; i < len; ++i) |
f4dc4d17 | 7660 | { |
df07e2c7 | 7661 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
7662 | gdb_assert (iter->per_cu.is_debug_types); |
7663 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 7664 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
7665 | } |
7666 | ||
df07e2c7 AB |
7667 | delete tu_group->tus; |
7668 | tu_group->tus = nullptr; | |
348e048f DE |
7669 | |
7670 | return 1; | |
7671 | } | |
7672 | ||
7673 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7674 | Build partial symbol tables for the .debug_types comp-units. */ | |
7675 | ||
7676 | static void | |
ed2dc618 | 7677 | build_type_psymtabs (struct dwarf2_per_objfile *dwarf2_per_objfile) |
348e048f | 7678 | { |
ed2dc618 | 7679 | if (! create_all_type_units (dwarf2_per_objfile)) |
348e048f DE |
7680 | return; |
7681 | ||
ed2dc618 | 7682 | build_type_psymtabs_1 (dwarf2_per_objfile); |
6aa5f3a6 | 7683 | } |
f4dc4d17 | 7684 | |
6aa5f3a6 DE |
7685 | /* Traversal function for process_skeletonless_type_unit. |
7686 | Read a TU in a DWO file and build partial symbols for it. */ | |
7687 | ||
7688 | static int | |
7689 | process_skeletonless_type_unit (void **slot, void *info) | |
7690 | { | |
7691 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
ed2dc618 SM |
7692 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7693 | = (struct dwarf2_per_objfile *) info; | |
6aa5f3a6 DE |
7694 | struct signatured_type find_entry, *entry; |
7695 | ||
7696 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
7697 | ||
7698 | if (dwarf2_per_objfile->signatured_types == NULL) | |
298e9637 | 7699 | dwarf2_per_objfile->signatured_types = allocate_signatured_type_table (); |
6aa5f3a6 DE |
7700 | |
7701 | find_entry.signature = dwo_unit->signature; | |
b0b6a987 TT |
7702 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types.get (), |
7703 | &find_entry, INSERT); | |
6aa5f3a6 DE |
7704 | /* If we've already seen this type there's nothing to do. What's happening |
7705 | is we're doing our own version of comdat-folding here. */ | |
7706 | if (*slot != NULL) | |
7707 | return 1; | |
7708 | ||
7709 | /* This does the job that create_all_type_units would have done for | |
7710 | this TU. */ | |
ed2dc618 SM |
7711 | entry = add_type_unit (dwarf2_per_objfile, dwo_unit->signature, slot); |
7712 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
7713 | *slot = entry; |
7714 | ||
7715 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
6751ebae | 7716 | cutu_reader reader (&entry->per_cu, NULL, 0, false); |
c0ab21c2 TT |
7717 | if (!reader.dummy_p) |
7718 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7719 | reader.comp_unit_die); |
6aa5f3a6 DE |
7720 | |
7721 | return 1; | |
7722 | } | |
7723 | ||
7724 | /* Traversal function for process_skeletonless_type_units. */ | |
7725 | ||
7726 | static int | |
7727 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
7728 | { | |
7729 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
7730 | ||
7731 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
7732 | htab_traverse_noresize (dwo_file->tus.get (), |
7733 | process_skeletonless_type_unit, info); | |
6aa5f3a6 DE |
7734 | |
7735 | return 1; | |
7736 | } | |
7737 | ||
7738 | /* Scan all TUs of DWO files, verifying we've processed them. | |
7739 | This is needed in case a TU was emitted without its skeleton. | |
7740 | Note: This can't be done until we know what all the DWO files are. */ | |
7741 | ||
7742 | static void | |
ed2dc618 | 7743 | process_skeletonless_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
7744 | { |
7745 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
ed2dc618 | 7746 | if (get_dwp_file (dwarf2_per_objfile) == NULL |
6aa5f3a6 DE |
7747 | && dwarf2_per_objfile->dwo_files != NULL) |
7748 | { | |
51ac9db5 | 7749 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files.get (), |
6aa5f3a6 | 7750 | process_dwo_file_for_skeletonless_type_units, |
ed2dc618 | 7751 | dwarf2_per_objfile); |
6aa5f3a6 | 7752 | } |
348e048f DE |
7753 | } |
7754 | ||
ed2dc618 | 7755 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
7756 | |
7757 | static void | |
ed2dc618 | 7758 | set_partial_user (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 7759 | { |
b76e467d | 7760 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
95554aad | 7761 | { |
891813be | 7762 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 7763 | |
36586728 TT |
7764 | if (pst == NULL) |
7765 | continue; | |
7766 | ||
b76e467d | 7767 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
7768 | { |
7769 | /* Set the 'user' field only if it is not already set. */ | |
7770 | if (pst->dependencies[j]->user == NULL) | |
7771 | pst->dependencies[j]->user = pst; | |
7772 | } | |
7773 | } | |
7774 | } | |
7775 | ||
93311388 DE |
7776 | /* Build the partial symbol table by doing a quick pass through the |
7777 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 7778 | |
93311388 | 7779 | static void |
ed2dc618 | 7780 | dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile *dwarf2_per_objfile) |
93311388 | 7781 | { |
ed2dc618 | 7782 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
93311388 | 7783 | |
b4f54984 | 7784 | if (dwarf_read_debug) |
45cfd468 DE |
7785 | { |
7786 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 7787 | objfile_name (objfile)); |
45cfd468 DE |
7788 | } |
7789 | ||
76935768 TT |
7790 | scoped_restore restore_reading_psyms |
7791 | = make_scoped_restore (&dwarf2_per_objfile->reading_partial_symbols, | |
7792 | true); | |
98bfdba5 | 7793 | |
96b79293 | 7794 | dwarf2_per_objfile->info.read (objfile); |
91c24f0a | 7795 | |
93311388 DE |
7796 | /* Any cached compilation units will be linked by the per-objfile |
7797 | read_in_chain. Make sure to free them when we're done. */ | |
11ed8cad | 7798 | free_cached_comp_units freer (dwarf2_per_objfile); |
72bf9492 | 7799 | |
ed2dc618 | 7800 | build_type_psymtabs (dwarf2_per_objfile); |
348e048f | 7801 | |
ed2dc618 | 7802 | create_all_comp_units (dwarf2_per_objfile); |
c906108c | 7803 | |
60606b2c TT |
7804 | /* Create a temporary address map on a temporary obstack. We later |
7805 | copy this to the final obstack. */ | |
8268c778 | 7806 | auto_obstack temp_obstack; |
791afaa2 TT |
7807 | |
7808 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 7809 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 7810 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 7811 | |
b76e467d | 7812 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
3d5afab3 TV |
7813 | { |
7814 | if (per_cu->v.psymtab != NULL) | |
7815 | /* In case a forward DW_TAG_imported_unit has read the CU already. */ | |
7816 | continue; | |
7817 | process_psymtab_comp_unit (per_cu, false, language_minimal); | |
7818 | } | |
ff013f42 | 7819 | |
6aa5f3a6 | 7820 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
ed2dc618 | 7821 | process_skeletonless_type_units (dwarf2_per_objfile); |
6aa5f3a6 DE |
7822 | |
7823 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
7824 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
7825 | { | |
eaa5fa8b | 7826 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups.get (), |
ed2dc618 | 7827 | build_type_psymtab_dependencies, dwarf2_per_objfile); |
6aa5f3a6 DE |
7828 | } |
7829 | ||
b4f54984 | 7830 | if (dwarf_read_debug) |
ed2dc618 | 7831 | print_tu_stats (dwarf2_per_objfile); |
6aa5f3a6 | 7832 | |
ed2dc618 | 7833 | set_partial_user (dwarf2_per_objfile); |
95554aad | 7834 | |
d320c2b5 TT |
7835 | objfile->partial_symtabs->psymtabs_addrmap |
7836 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 7837 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
7838 | /* At this point we want to keep the address map. */ |
7839 | save_psymtabs_addrmap.release (); | |
ff013f42 | 7840 | |
b4f54984 | 7841 | if (dwarf_read_debug) |
45cfd468 | 7842 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 7843 | objfile_name (objfile)); |
ae038cb0 DJ |
7844 | } |
7845 | ||
dee91e82 DE |
7846 | /* Load the partial DIEs for a secondary CU into memory. |
7847 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 7848 | |
dee91e82 DE |
7849 | static void |
7850 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
7851 | { | |
6751ebae | 7852 | cutu_reader reader (this_cu, NULL, 1, false); |
c0ab21c2 TT |
7853 | |
7854 | if (!reader.dummy_p) | |
7855 | { | |
7856 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
7857 | language_minimal); | |
7858 | ||
7859 | /* Check if comp unit has_children. | |
7860 | If so, read the rest of the partial symbols from this comp unit. | |
7861 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7862 | if (reader.comp_unit_die->has_children) |
c0ab21c2 | 7863 | load_partial_dies (&reader, reader.info_ptr, 0); |
6751ebae TT |
7864 | |
7865 | reader.keep (); | |
c0ab21c2 | 7866 | } |
ae038cb0 DJ |
7867 | } |
7868 | ||
ae038cb0 | 7869 | static void |
ed2dc618 | 7870 | read_comp_units_from_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
36586728 | 7871 | struct dwarf2_section_info *section, |
f1902523 | 7872 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 7873 | unsigned int is_dwz) |
ae038cb0 | 7874 | { |
d521ce57 | 7875 | const gdb_byte *info_ptr; |
ed2dc618 | 7876 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
be391dca | 7877 | |
b4f54984 | 7878 | if (dwarf_read_debug) |
bf6af496 | 7879 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
96b79293 TT |
7880 | section->get_name (), |
7881 | section->get_file_name ()); | |
bf6af496 | 7882 | |
96b79293 | 7883 | section->read (objfile); |
ae038cb0 | 7884 | |
36586728 | 7885 | info_ptr = section->buffer; |
6e70227d | 7886 | |
36586728 | 7887 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 7888 | { |
ae038cb0 | 7889 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 7890 | |
9c541725 | 7891 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 7892 | |
f1902523 | 7893 | comp_unit_head cu_header; |
ed2dc618 SM |
7894 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
7895 | abbrev_section, info_ptr, | |
7896 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
7897 | |
7898 | /* Save the compilation unit for later lookup. */ | |
f1902523 JK |
7899 | if (cu_header.unit_type != DW_UT_type) |
7900 | { | |
7901 | this_cu = XOBNEW (&objfile->objfile_obstack, | |
7902 | struct dwarf2_per_cu_data); | |
7903 | memset (this_cu, 0, sizeof (*this_cu)); | |
7904 | } | |
7905 | else | |
7906 | { | |
7907 | auto sig_type = XOBNEW (&objfile->objfile_obstack, | |
7908 | struct signatured_type); | |
7909 | memset (sig_type, 0, sizeof (*sig_type)); | |
7910 | sig_type->signature = cu_header.signature; | |
7911 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
7912 | this_cu = &sig_type->per_cu; | |
7913 | } | |
7914 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 7915 | this_cu->sect_off = sect_off; |
f1902523 | 7916 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 7917 | this_cu->is_dwz = is_dwz; |
e3b94546 | 7918 | this_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
8a0459fd | 7919 | this_cu->section = section; |
ae038cb0 | 7920 | |
b76e467d | 7921 | dwarf2_per_objfile->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
7922 | |
7923 | info_ptr = info_ptr + this_cu->length; | |
7924 | } | |
36586728 TT |
7925 | } |
7926 | ||
7927 | /* Create a list of all compilation units in OBJFILE. | |
7928 | This is only done for -readnow and building partial symtabs. */ | |
7929 | ||
7930 | static void | |
ed2dc618 | 7931 | create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 7932 | { |
b76e467d | 7933 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
ed2dc618 | 7934 | read_comp_units_from_section (dwarf2_per_objfile, &dwarf2_per_objfile->info, |
b76e467d | 7935 | &dwarf2_per_objfile->abbrev, 0); |
36586728 | 7936 | |
b76e467d | 7937 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 7938 | if (dwz != NULL) |
ed2dc618 | 7939 | read_comp_units_from_section (dwarf2_per_objfile, &dwz->info, &dwz->abbrev, |
b76e467d | 7940 | 1); |
c906108c SS |
7941 | } |
7942 | ||
5734ee8b | 7943 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 7944 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 7945 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
7946 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
7947 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 7948 | |
72bf9492 DJ |
7949 | static void |
7950 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
7951 | CORE_ADDR *highpc, int set_addrmap, |
7952 | struct dwarf2_cu *cu) | |
c906108c | 7953 | { |
72bf9492 | 7954 | struct partial_die_info *pdi; |
c906108c | 7955 | |
91c24f0a DC |
7956 | /* Now, march along the PDI's, descending into ones which have |
7957 | interesting children but skipping the children of the other ones, | |
7958 | until we reach the end of the compilation unit. */ | |
c906108c | 7959 | |
72bf9492 | 7960 | pdi = first_die; |
91c24f0a | 7961 | |
72bf9492 DJ |
7962 | while (pdi != NULL) |
7963 | { | |
52356b79 | 7964 | pdi->fixup (cu); |
c906108c | 7965 | |
f55ee35c | 7966 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
7967 | children, so we need to look at them. Ditto for anonymous |
7968 | enums. */ | |
933c6fe4 | 7969 | |
72bf9492 | 7970 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 7971 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
7972 | || pdi->tag == DW_TAG_imported_unit |
7973 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 7974 | { |
72bf9492 | 7975 | switch (pdi->tag) |
c906108c SS |
7976 | { |
7977 | case DW_TAG_subprogram: | |
b1dc1806 | 7978 | case DW_TAG_inlined_subroutine: |
cdc07690 | 7979 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 7980 | break; |
72929c62 | 7981 | case DW_TAG_constant: |
c906108c SS |
7982 | case DW_TAG_variable: |
7983 | case DW_TAG_typedef: | |
91c24f0a | 7984 | case DW_TAG_union_type: |
317d2668 TV |
7985 | if (!pdi->is_declaration |
7986 | || (pdi->tag == DW_TAG_variable && pdi->is_external)) | |
63d06c5c | 7987 | { |
72bf9492 | 7988 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
7989 | } |
7990 | break; | |
c906108c | 7991 | case DW_TAG_class_type: |
680b30c7 | 7992 | case DW_TAG_interface_type: |
c906108c | 7993 | case DW_TAG_structure_type: |
72bf9492 | 7994 | if (!pdi->is_declaration) |
c906108c | 7995 | { |
72bf9492 | 7996 | add_partial_symbol (pdi, cu); |
c906108c | 7997 | } |
b7fee5a3 KS |
7998 | if ((cu->language == language_rust |
7999 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8000 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8001 | set_addrmap, cu); | |
c906108c | 8002 | break; |
91c24f0a | 8003 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8004 | if (!pdi->is_declaration) |
8005 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8006 | break; |
8007 | case DW_TAG_base_type: | |
a02abb62 | 8008 | case DW_TAG_subrange_type: |
c906108c | 8009 | /* File scope base type definitions are added to the partial |
c5aa993b | 8010 | symbol table. */ |
72bf9492 | 8011 | add_partial_symbol (pdi, cu); |
c906108c | 8012 | break; |
d9fa45fe | 8013 | case DW_TAG_namespace: |
cdc07690 | 8014 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8015 | break; |
5d7cb8df | 8016 | case DW_TAG_module: |
59c35742 AB |
8017 | if (!pdi->is_declaration) |
8018 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 8019 | break; |
95554aad TT |
8020 | case DW_TAG_imported_unit: |
8021 | { | |
8022 | struct dwarf2_per_cu_data *per_cu; | |
8023 | ||
f4dc4d17 DE |
8024 | /* For now we don't handle imported units in type units. */ |
8025 | if (cu->per_cu->is_debug_types) | |
8026 | { | |
8027 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8028 | " supported in type units [in module %s]"), | |
518817b3 | 8029 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
8030 | } |
8031 | ||
e3b94546 SM |
8032 | per_cu = dwarf2_find_containing_comp_unit |
8033 | (pdi->d.sect_off, pdi->is_dwz, | |
518817b3 | 8034 | cu->per_cu->dwarf2_per_objfile); |
95554aad TT |
8035 | |
8036 | /* Go read the partial unit, if needed. */ | |
8037 | if (per_cu->v.psymtab == NULL) | |
135f5437 | 8038 | process_psymtab_comp_unit (per_cu, true, cu->language); |
95554aad | 8039 | |
ae640021 | 8040 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
8041 | } |
8042 | break; | |
74921315 KS |
8043 | case DW_TAG_imported_declaration: |
8044 | add_partial_symbol (pdi, cu); | |
8045 | break; | |
c906108c SS |
8046 | default: |
8047 | break; | |
8048 | } | |
8049 | } | |
8050 | ||
72bf9492 DJ |
8051 | /* If the die has a sibling, skip to the sibling. */ |
8052 | ||
8053 | pdi = pdi->die_sibling; | |
8054 | } | |
8055 | } | |
8056 | ||
8057 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8058 | |
72bf9492 | 8059 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8060 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8061 | Enumerators are an exception; they use the scope of their parent |
8062 | enumeration type, i.e. the name of the enumeration type is not | |
8063 | prepended to the enumerator. | |
91c24f0a | 8064 | |
72bf9492 DJ |
8065 | There are two complexities. One is DW_AT_specification; in this |
8066 | case "parent" means the parent of the target of the specification, | |
8067 | instead of the direct parent of the DIE. The other is compilers | |
8068 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8069 | the fully qualified name of structure types from their members' | |
8070 | linkage names. This must be done using the DIE's children rather | |
8071 | than the children of any DW_AT_specification target. We only need | |
8072 | to do this for structures at the top level, i.e. if the target of | |
8073 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8074 | have a parent. */ | |
8075 | ||
8076 | /* Compute the scope prefix associated with PDI's parent, in | |
8077 | compilation unit CU. The result will be allocated on CU's | |
8078 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8079 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8080 | static const char * |
72bf9492 DJ |
8081 | partial_die_parent_scope (struct partial_die_info *pdi, |
8082 | struct dwarf2_cu *cu) | |
8083 | { | |
15d034d0 | 8084 | const char *grandparent_scope; |
72bf9492 | 8085 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8086 | |
72bf9492 DJ |
8087 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8088 | then this means the parent of the specification DIE. */ | |
8089 | ||
8090 | real_pdi = pdi; | |
72bf9492 | 8091 | while (real_pdi->has_specification) |
fb816e8b | 8092 | { |
122cf0f2 AB |
8093 | auto res = find_partial_die (real_pdi->spec_offset, |
8094 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8095 | real_pdi = res.pdi; |
8096 | cu = res.cu; | |
8097 | } | |
72bf9492 DJ |
8098 | |
8099 | parent = real_pdi->die_parent; | |
8100 | if (parent == NULL) | |
8101 | return NULL; | |
8102 | ||
8103 | if (parent->scope_set) | |
8104 | return parent->scope; | |
8105 | ||
52356b79 | 8106 | parent->fixup (cu); |
72bf9492 | 8107 | |
10b3939b | 8108 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8109 | |
acebe513 UW |
8110 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8111 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8112 | Work around this problem here. */ | |
8113 | if (cu->language == language_cplus | |
6e70227d | 8114 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
8115 | && strcmp (parent->name, "::") == 0 |
8116 | && grandparent_scope == NULL) | |
8117 | { | |
8118 | parent->scope = NULL; | |
8119 | parent->scope_set = 1; | |
8120 | return NULL; | |
8121 | } | |
8122 | ||
0a4b0913 | 8123 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
8124 | if (pdi->tag == DW_TAG_enumerator) |
8125 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8126 | parent->scope = grandparent_scope; | |
8127 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8128 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8129 | || parent->tag == DW_TAG_structure_type |
8130 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8131 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 8132 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
8133 | || parent->tag == DW_TAG_enumeration_type |
8134 | || (cu->language == language_fortran | |
8135 | && parent->tag == DW_TAG_subprogram | |
8136 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8137 | { |
8138 | if (grandparent_scope == NULL) | |
8139 | parent->scope = parent->name; | |
8140 | else | |
3e43a32a MS |
8141 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8142 | grandparent_scope, | |
f55ee35c | 8143 | parent->name, 0, cu); |
72bf9492 | 8144 | } |
72bf9492 DJ |
8145 | else |
8146 | { | |
8147 | /* FIXME drow/2004-04-01: What should we be doing with | |
8148 | function-local names? For partial symbols, we should probably be | |
8149 | ignoring them. */ | |
fa9c3fa0 TT |
8150 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8151 | dwarf_tag_name (parent->tag), | |
8152 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8153 | parent->scope = grandparent_scope; |
c906108c SS |
8154 | } |
8155 | ||
72bf9492 DJ |
8156 | parent->scope_set = 1; |
8157 | return parent->scope; | |
8158 | } | |
8159 | ||
8160 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8161 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8162 | |
43816ebc | 8163 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8164 | partial_die_full_name (struct partial_die_info *pdi, |
8165 | struct dwarf2_cu *cu) | |
8166 | { | |
15d034d0 | 8167 | const char *parent_scope; |
72bf9492 | 8168 | |
98bfdba5 PA |
8169 | /* If this is a template instantiation, we can not work out the |
8170 | template arguments from partial DIEs. So, unfortunately, we have | |
8171 | to go through the full DIEs. At least any work we do building | |
8172 | types here will be reused if full symbols are loaded later. */ | |
8173 | if (pdi->has_template_arguments) | |
8174 | { | |
52356b79 | 8175 | pdi->fixup (cu); |
98bfdba5 PA |
8176 | |
8177 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
8178 | { | |
8179 | struct die_info *die; | |
8180 | struct attribute attr; | |
8181 | struct dwarf2_cu *ref_cu = cu; | |
8182 | ||
b64f50a1 | 8183 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8184 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8185 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8186 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8187 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8188 | ||
43816ebc | 8189 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8190 | } |
8191 | } | |
8192 | ||
72bf9492 DJ |
8193 | parent_scope = partial_die_parent_scope (pdi, cu); |
8194 | if (parent_scope == NULL) | |
8195 | return NULL; | |
8196 | else | |
43816ebc TT |
8197 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
8198 | pdi->name, 0, cu)); | |
c906108c SS |
8199 | } |
8200 | ||
8201 | static void | |
72bf9492 | 8202 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8203 | { |
518817b3 SM |
8204 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8205 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 8206 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 8207 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 8208 | CORE_ADDR addr = 0; |
15d034d0 | 8209 | const char *actual_name = NULL; |
e142c38c DJ |
8210 | CORE_ADDR baseaddr; |
8211 | ||
b3b3bada | 8212 | baseaddr = objfile->text_section_offset (); |
c906108c | 8213 | |
43816ebc TT |
8214 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8215 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8216 | if (built_actual_name != NULL) |
43816ebc | 8217 | actual_name = built_actual_name.get (); |
63d06c5c | 8218 | |
72bf9492 DJ |
8219 | if (actual_name == NULL) |
8220 | actual_name = pdi->name; | |
8221 | ||
c906108c SS |
8222 | switch (pdi->tag) |
8223 | { | |
b1dc1806 | 8224 | case DW_TAG_inlined_subroutine: |
c906108c | 8225 | case DW_TAG_subprogram: |
79748972 TT |
8226 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8227 | - baseaddr); | |
0a4b0913 AB |
8228 | if (pdi->is_external |
8229 | || cu->language == language_ada | |
8230 | || (cu->language == language_fortran | |
8231 | && pdi->die_parent != NULL | |
8232 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8233 | { | |
8234 | /* Normally, only "external" DIEs are part of the global scope. | |
8235 | But in Ada and Fortran, we want to be able to access nested | |
8236 | procedures globally. So all Ada and Fortran subprograms are | |
8237 | stored in the global scope. */ | |
31edb802 | 8238 | add_psymbol_to_list (actual_name, |
15d034d0 | 8239 | built_actual_name != NULL, |
f47fb265 | 8240 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8241 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8242 | psymbol_placement::GLOBAL, |
79748972 TT |
8243 | addr, |
8244 | cu->language, objfile); | |
c906108c SS |
8245 | } |
8246 | else | |
8247 | { | |
31edb802 | 8248 | add_psymbol_to_list (actual_name, |
15d034d0 | 8249 | built_actual_name != NULL, |
f47fb265 | 8250 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8251 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8252 | psymbol_placement::STATIC, |
1762568f | 8253 | addr, cu->language, objfile); |
c906108c | 8254 | } |
0c1b455e TT |
8255 | |
8256 | if (pdi->main_subprogram && actual_name != NULL) | |
8257 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8258 | break; |
72929c62 | 8259 | case DW_TAG_constant: |
31edb802 | 8260 | add_psymbol_to_list (actual_name, |
75aedd27 TT |
8261 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
8262 | -1, (pdi->is_external | |
8263 | ? psymbol_placement::GLOBAL | |
8264 | : psymbol_placement::STATIC), | |
8265 | 0, cu->language, objfile); | |
72929c62 | 8266 | break; |
c906108c | 8267 | case DW_TAG_variable: |
95554aad TT |
8268 | if (pdi->d.locdesc) |
8269 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8270 | |
95554aad | 8271 | if (pdi->d.locdesc |
caac4577 JG |
8272 | && addr == 0 |
8273 | && !dwarf2_per_objfile->has_section_at_zero) | |
8274 | { | |
8275 | /* A global or static variable may also have been stripped | |
8276 | out by the linker if unused, in which case its address | |
8277 | will be nullified; do not add such variables into partial | |
8278 | symbol table then. */ | |
8279 | } | |
8280 | else if (pdi->is_external) | |
c906108c SS |
8281 | { |
8282 | /* Global Variable. | |
8283 | Don't enter into the minimal symbol tables as there is | |
8284 | a minimal symbol table entry from the ELF symbols already. | |
8285 | Enter into partial symbol table if it has a location | |
8286 | descriptor or a type. | |
8287 | If the location descriptor is missing, new_symbol will create | |
8288 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8289 | be determined from the minimal symbol table whenever the variable | |
8290 | is referenced. | |
8291 | The address for the partial symbol table entry is not | |
8292 | used by GDB, but it comes in handy for debugging partial symbol | |
8293 | table building. */ | |
8294 | ||
95554aad | 8295 | if (pdi->d.locdesc || pdi->has_type) |
31edb802 | 8296 | add_psymbol_to_list (actual_name, |
15d034d0 | 8297 | built_actual_name != NULL, |
f47fb265 | 8298 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 8299 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8300 | psymbol_placement::GLOBAL, |
79748972 | 8301 | addr, cu->language, objfile); |
c906108c SS |
8302 | } |
8303 | else | |
8304 | { | |
ff908ebf AW |
8305 | int has_loc = pdi->d.locdesc != NULL; |
8306 | ||
8307 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8308 | without location descriptors or constant values). */ | |
8309 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8310 | return; |
ff908ebf | 8311 | |
31edb802 | 8312 | add_psymbol_to_list (actual_name, |
15d034d0 | 8313 | built_actual_name != NULL, |
f47fb265 | 8314 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 8315 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8316 | psymbol_placement::STATIC, |
79748972 | 8317 | has_loc ? addr : 0, |
f47fb265 | 8318 | cu->language, objfile); |
c906108c SS |
8319 | } |
8320 | break; | |
8321 | case DW_TAG_typedef: | |
8322 | case DW_TAG_base_type: | |
a02abb62 | 8323 | case DW_TAG_subrange_type: |
31edb802 | 8324 | add_psymbol_to_list (actual_name, |
15d034d0 | 8325 | built_actual_name != NULL, |
79748972 | 8326 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 8327 | psymbol_placement::STATIC, |
1762568f | 8328 | 0, cu->language, objfile); |
c906108c | 8329 | break; |
74921315 | 8330 | case DW_TAG_imported_declaration: |
72bf9492 | 8331 | case DW_TAG_namespace: |
31edb802 | 8332 | add_psymbol_to_list (actual_name, |
15d034d0 | 8333 | built_actual_name != NULL, |
79748972 | 8334 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 8335 | psymbol_placement::GLOBAL, |
1762568f | 8336 | 0, cu->language, objfile); |
72bf9492 | 8337 | break; |
530e8392 | 8338 | case DW_TAG_module: |
a5fd13a9 BH |
8339 | /* With Fortran 77 there might be a "BLOCK DATA" module |
8340 | available without any name. If so, we skip the module as it | |
8341 | doesn't bring any value. */ | |
8342 | if (actual_name != nullptr) | |
31edb802 | 8343 | add_psymbol_to_list (actual_name, |
a5fd13a9 BH |
8344 | built_actual_name != NULL, |
8345 | MODULE_DOMAIN, LOC_TYPEDEF, -1, | |
8346 | psymbol_placement::GLOBAL, | |
8347 | 0, cu->language, objfile); | |
530e8392 | 8348 | break; |
c906108c | 8349 | case DW_TAG_class_type: |
680b30c7 | 8350 | case DW_TAG_interface_type: |
c906108c SS |
8351 | case DW_TAG_structure_type: |
8352 | case DW_TAG_union_type: | |
8353 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
8354 | /* Skip external references. The DWARF standard says in the section |
8355 | about "Structure, Union, and Class Type Entries": "An incomplete | |
8356 | structure, union or class type is represented by a structure, | |
8357 | union or class entry that does not have a byte size attribute | |
8358 | and that has a DW_AT_declaration attribute." */ | |
8359 | if (!pdi->has_byte_size && pdi->is_declaration) | |
43816ebc | 8360 | return; |
fa4028e9 | 8361 | |
63d06c5c DC |
8362 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8363 | static vs. global. */ | |
31edb802 | 8364 | add_psymbol_to_list (actual_name, |
15d034d0 | 8365 | built_actual_name != NULL, |
79748972 | 8366 | STRUCT_DOMAIN, LOC_TYPEDEF, -1, |
9c37b5ae | 8367 | cu->language == language_cplus |
75aedd27 TT |
8368 | ? psymbol_placement::GLOBAL |
8369 | : psymbol_placement::STATIC, | |
1762568f | 8370 | 0, cu->language, objfile); |
c906108c | 8371 | |
c906108c SS |
8372 | break; |
8373 | case DW_TAG_enumerator: | |
31edb802 | 8374 | add_psymbol_to_list (actual_name, |
15d034d0 | 8375 | built_actual_name != NULL, |
79748972 | 8376 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 8377 | cu->language == language_cplus |
75aedd27 TT |
8378 | ? psymbol_placement::GLOBAL |
8379 | : psymbol_placement::STATIC, | |
1762568f | 8380 | 0, cu->language, objfile); |
c906108c SS |
8381 | break; |
8382 | default: | |
8383 | break; | |
8384 | } | |
8385 | } | |
8386 | ||
5c4e30ca DC |
8387 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8388 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8389 | the name of the enclosing namespace. */ | |
91c24f0a | 8390 | |
72bf9492 DJ |
8391 | static void |
8392 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8393 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8394 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8395 | { |
72bf9492 | 8396 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8397 | |
72bf9492 | 8398 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8399 | |
8400 | /* Now scan partial symbols in that namespace. */ | |
8401 | ||
91c24f0a | 8402 | if (pdi->has_children) |
cdc07690 | 8403 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8404 | } |
8405 | ||
5d7cb8df JK |
8406 | /* Read a partial die corresponding to a Fortran module. */ |
8407 | ||
8408 | static void | |
8409 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8410 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8411 | { |
530e8392 KB |
8412 | /* Add a symbol for the namespace. */ |
8413 | ||
8414 | add_partial_symbol (pdi, cu); | |
8415 | ||
f55ee35c | 8416 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8417 | |
8418 | if (pdi->has_children) | |
cdc07690 | 8419 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8420 | } |
8421 | ||
b1dc1806 XR |
8422 | /* Read a partial die corresponding to a subprogram or an inlined |
8423 | subprogram and create a partial symbol for that subprogram. | |
8424 | When the CU language allows it, this routine also defines a partial | |
8425 | symbol for each nested subprogram that this subprogram contains. | |
8426 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8427 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8428 | |
cdc07690 YQ |
8429 | PDI may also be a lexical block, in which case we simply search |
8430 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8431 | Again, this is only performed when the CU language allows this |
8432 | type of definitions. */ | |
8433 | ||
8434 | static void | |
8435 | add_partial_subprogram (struct partial_die_info *pdi, | |
8436 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8437 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8438 | { |
b1dc1806 | 8439 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8440 | { |
8441 | if (pdi->has_pc_info) | |
8442 | { | |
8443 | if (pdi->lowpc < *lowpc) | |
8444 | *lowpc = pdi->lowpc; | |
8445 | if (pdi->highpc > *highpc) | |
8446 | *highpc = pdi->highpc; | |
cdc07690 | 8447 | if (set_addrmap) |
5734ee8b | 8448 | { |
518817b3 | 8449 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
08feed99 | 8450 | struct gdbarch *gdbarch = objfile->arch (); |
3e29f34a | 8451 | CORE_ADDR baseaddr; |
b926417a TT |
8452 | CORE_ADDR this_highpc; |
8453 | CORE_ADDR this_lowpc; | |
5734ee8b | 8454 | |
b3b3bada | 8455 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8456 | this_lowpc |
8457 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8458 | pdi->lowpc + baseaddr) | |
8459 | - baseaddr); | |
8460 | this_highpc | |
8461 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8462 | pdi->highpc + baseaddr) | |
8463 | - baseaddr); | |
d320c2b5 | 8464 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 8465 | this_lowpc, this_highpc - 1, |
9291a0cd | 8466 | cu->per_cu->v.psymtab); |
5734ee8b | 8467 | } |
481860b3 GB |
8468 | } |
8469 | ||
8470 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8471 | { | |
bc30ff58 | 8472 | if (!pdi->is_declaration) |
e8d05480 JB |
8473 | /* Ignore subprogram DIEs that do not have a name, they are |
8474 | illegal. Do not emit a complaint at this point, we will | |
8475 | do so when we convert this psymtab into a symtab. */ | |
8476 | if (pdi->name) | |
8477 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
8478 | } |
8479 | } | |
6e70227d | 8480 | |
bc30ff58 JB |
8481 | if (! pdi->has_children) |
8482 | return; | |
8483 | ||
0a4b0913 | 8484 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8485 | { |
8486 | pdi = pdi->die_child; | |
8487 | while (pdi != NULL) | |
8488 | { | |
52356b79 | 8489 | pdi->fixup (cu); |
bc30ff58 | 8490 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8491 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8492 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8493 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8494 | pdi = pdi->die_sibling; |
8495 | } | |
8496 | } | |
8497 | } | |
8498 | ||
91c24f0a DC |
8499 | /* Read a partial die corresponding to an enumeration type. */ |
8500 | ||
72bf9492 DJ |
8501 | static void |
8502 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8503 | struct dwarf2_cu *cu) | |
91c24f0a | 8504 | { |
72bf9492 | 8505 | struct partial_die_info *pdi; |
91c24f0a DC |
8506 | |
8507 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
8508 | add_partial_symbol (enum_pdi, cu); |
8509 | ||
8510 | pdi = enum_pdi->die_child; | |
8511 | while (pdi) | |
91c24f0a | 8512 | { |
72bf9492 | 8513 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
b98664d3 | 8514 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8515 | else |
72bf9492 DJ |
8516 | add_partial_symbol (pdi, cu); |
8517 | pdi = pdi->die_sibling; | |
91c24f0a | 8518 | } |
91c24f0a DC |
8519 | } |
8520 | ||
6caca83c CC |
8521 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8522 | ||
8523 | static unsigned int | |
d521ce57 | 8524 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8525 | { |
8526 | unsigned int bytes_read; | |
8527 | ||
8528 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8529 | } | |
8530 | ||
685af9cd TT |
8531 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8532 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8533 | ||
4bb7a0a7 DJ |
8534 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8535 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8536 | the initial number. */ | |
8537 | ||
8538 | static struct abbrev_info * | |
685af9cd TT |
8539 | peek_die_abbrev (const die_reader_specs &reader, |
8540 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8541 | { |
685af9cd | 8542 | dwarf2_cu *cu = reader.cu; |
518817b3 | 8543 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
685af9cd TT |
8544 | unsigned int abbrev_number |
8545 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8546 | |
8547 | if (abbrev_number == 0) | |
8548 | return NULL; | |
8549 | ||
685af9cd | 8550 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
8551 | if (!abbrev) |
8552 | { | |
422b9917 | 8553 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8554 | " at offset %s [in module %s]"), |
422b9917 | 8555 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8556 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8557 | } |
8558 | ||
8559 | return abbrev; | |
8560 | } | |
8561 | ||
93311388 DE |
8562 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8563 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8564 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8565 | ||
d521ce57 TT |
8566 | static const gdb_byte * |
8567 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8568 | { |
4bb7a0a7 DJ |
8569 | while (1) |
8570 | { | |
685af9cd TT |
8571 | unsigned int bytes_read; |
8572 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
8573 | ||
4bb7a0a7 DJ |
8574 | if (abbrev == NULL) |
8575 | return info_ptr + bytes_read; | |
8576 | else | |
dee91e82 | 8577 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8578 | } |
8579 | } | |
8580 | ||
93311388 DE |
8581 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8582 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8583 | abbrev corresponding to that skipped uleb128 should be passed in |
8584 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8585 | children. */ | |
8586 | ||
d521ce57 TT |
8587 | static const gdb_byte * |
8588 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 8589 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8590 | { |
8591 | unsigned int bytes_read; | |
8592 | struct attribute attr; | |
dee91e82 DE |
8593 | bfd *abfd = reader->abfd; |
8594 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8595 | const gdb_byte *buffer = reader->buffer; |
f664829e | 8596 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
8597 | unsigned int form, i; |
8598 | ||
8599 | for (i = 0; i < abbrev->num_attrs; i++) | |
8600 | { | |
8601 | /* The only abbrev we care about is DW_AT_sibling. */ | |
8602 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
8603 | { | |
18a8505e AT |
8604 | bool ignored; |
8605 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr, | |
8606 | &ignored); | |
4bb7a0a7 | 8607 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 8608 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 8609 | else |
b9502d3f | 8610 | { |
0826b30a | 8611 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 8612 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
8613 | |
8614 | if (sibling_ptr < info_ptr) | |
b98664d3 | 8615 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 8616 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 8617 | reader->die_section->overflow_complaint (); |
b9502d3f WN |
8618 | else |
8619 | return sibling_ptr; | |
8620 | } | |
4bb7a0a7 DJ |
8621 | } |
8622 | ||
8623 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
8624 | form = abbrev->attrs[i].form; | |
8625 | skip_attribute: | |
8626 | switch (form) | |
8627 | { | |
4bb7a0a7 | 8628 | case DW_FORM_ref_addr: |
ae411497 TT |
8629 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
8630 | and later it is offset sized. */ | |
8631 | if (cu->header.version == 2) | |
8632 | info_ptr += cu->header.addr_size; | |
8633 | else | |
8634 | info_ptr += cu->header.offset_size; | |
8635 | break; | |
36586728 TT |
8636 | case DW_FORM_GNU_ref_alt: |
8637 | info_ptr += cu->header.offset_size; | |
8638 | break; | |
ae411497 | 8639 | case DW_FORM_addr: |
4bb7a0a7 DJ |
8640 | info_ptr += cu->header.addr_size; |
8641 | break; | |
8642 | case DW_FORM_data1: | |
8643 | case DW_FORM_ref1: | |
8644 | case DW_FORM_flag: | |
8fe0f950 | 8645 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
8646 | info_ptr += 1; |
8647 | break; | |
2dc7f7b3 | 8648 | case DW_FORM_flag_present: |
43988095 | 8649 | case DW_FORM_implicit_const: |
2dc7f7b3 | 8650 | break; |
4bb7a0a7 DJ |
8651 | case DW_FORM_data2: |
8652 | case DW_FORM_ref2: | |
8fe0f950 | 8653 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
8654 | info_ptr += 2; |
8655 | break; | |
8fe0f950 AT |
8656 | case DW_FORM_strx3: |
8657 | info_ptr += 3; | |
8658 | break; | |
4bb7a0a7 DJ |
8659 | case DW_FORM_data4: |
8660 | case DW_FORM_ref4: | |
8fe0f950 | 8661 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
8662 | info_ptr += 4; |
8663 | break; | |
8664 | case DW_FORM_data8: | |
8665 | case DW_FORM_ref8: | |
55f1336d | 8666 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
8667 | info_ptr += 8; |
8668 | break; | |
0224619f JK |
8669 | case DW_FORM_data16: |
8670 | info_ptr += 16; | |
8671 | break; | |
4bb7a0a7 | 8672 | case DW_FORM_string: |
9b1c24c8 | 8673 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
8674 | info_ptr += bytes_read; |
8675 | break; | |
2dc7f7b3 | 8676 | case DW_FORM_sec_offset: |
4bb7a0a7 | 8677 | case DW_FORM_strp: |
36586728 | 8678 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
8679 | info_ptr += cu->header.offset_size; |
8680 | break; | |
2dc7f7b3 | 8681 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
8682 | case DW_FORM_block: |
8683 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8684 | info_ptr += bytes_read; | |
8685 | break; | |
8686 | case DW_FORM_block1: | |
8687 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
8688 | break; | |
8689 | case DW_FORM_block2: | |
8690 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
8691 | break; | |
8692 | case DW_FORM_block4: | |
8693 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
8694 | break; | |
336d760d | 8695 | case DW_FORM_addrx: |
cf532bd1 | 8696 | case DW_FORM_strx: |
4bb7a0a7 DJ |
8697 | case DW_FORM_sdata: |
8698 | case DW_FORM_udata: | |
8699 | case DW_FORM_ref_udata: | |
3019eac3 DE |
8700 | case DW_FORM_GNU_addr_index: |
8701 | case DW_FORM_GNU_str_index: | |
18a8505e | 8702 | case DW_FORM_rnglistx: |
41144253 | 8703 | case DW_FORM_loclistx: |
d521ce57 | 8704 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
8705 | break; |
8706 | case DW_FORM_indirect: | |
8707 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8708 | info_ptr += bytes_read; | |
8709 | /* We need to continue parsing from here, so just go back to | |
8710 | the top. */ | |
8711 | goto skip_attribute; | |
8712 | ||
8713 | default: | |
3e43a32a MS |
8714 | error (_("Dwarf Error: Cannot handle %s " |
8715 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
8716 | dwarf_form_name (form), |
8717 | bfd_get_filename (abfd)); | |
8718 | } | |
8719 | } | |
8720 | ||
8721 | if (abbrev->has_children) | |
dee91e82 | 8722 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
8723 | else |
8724 | return info_ptr; | |
8725 | } | |
8726 | ||
93311388 | 8727 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 8728 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 8729 | |
d521ce57 | 8730 | static const gdb_byte * |
dee91e82 DE |
8731 | locate_pdi_sibling (const struct die_reader_specs *reader, |
8732 | struct partial_die_info *orig_pdi, | |
d521ce57 | 8733 | const gdb_byte *info_ptr) |
91c24f0a DC |
8734 | { |
8735 | /* Do we know the sibling already? */ | |
72bf9492 | 8736 | |
91c24f0a DC |
8737 | if (orig_pdi->sibling) |
8738 | return orig_pdi->sibling; | |
8739 | ||
8740 | /* Are there any children to deal with? */ | |
8741 | ||
8742 | if (!orig_pdi->has_children) | |
8743 | return info_ptr; | |
8744 | ||
4bb7a0a7 | 8745 | /* Skip the children the long way. */ |
91c24f0a | 8746 | |
dee91e82 | 8747 | return skip_children (reader, info_ptr); |
91c24f0a DC |
8748 | } |
8749 | ||
257e7a09 | 8750 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 8751 | not NULL. */ |
c906108c | 8752 | |
891813be TT |
8753 | void |
8754 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 8755 | { |
ed2dc618 SM |
8756 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8757 | = get_dwarf2_per_objfile (objfile); | |
8758 | ||
077cbab2 TT |
8759 | gdb_assert (!readin); |
8760 | /* If this psymtab is constructed from a debug-only objfile, the | |
8761 | has_section_at_zero flag will not necessarily be correct. We | |
8762 | can get the correct value for this flag by looking at the data | |
8763 | associated with the (presumably stripped) associated objfile. */ | |
8764 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 8765 | { |
077cbab2 TT |
8766 | struct dwarf2_per_objfile *dpo_backlink |
8767 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); | |
c906108c | 8768 | |
077cbab2 TT |
8769 | dwarf2_per_objfile->has_section_at_zero |
8770 | = dpo_backlink->has_section_at_zero; | |
8771 | } | |
98bfdba5 | 8772 | |
8566b89b | 8773 | expand_psymtab (objfile); |
95554aad | 8774 | |
ed2dc618 | 8775 | process_cu_includes (dwarf2_per_objfile); |
c906108c | 8776 | } |
9cdd5dbd DE |
8777 | \f |
8778 | /* Reading in full CUs. */ | |
c906108c | 8779 | |
10b3939b DJ |
8780 | /* Add PER_CU to the queue. */ |
8781 | ||
8782 | static void | |
95554aad TT |
8783 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
8784 | enum language pretend_language) | |
10b3939b | 8785 | { |
10b3939b | 8786 | per_cu->queued = 1; |
39856def | 8787 | per_cu->dwarf2_per_objfile->queue.emplace (per_cu, pretend_language); |
10b3939b DJ |
8788 | } |
8789 | ||
89e63ee4 DE |
8790 | /* If PER_CU is not yet queued, add it to the queue. |
8791 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
8792 | dependency. | |
0907af0c | 8793 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
8794 | meaning either PER_CU is already queued or it is already loaded. |
8795 | ||
8796 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
8797 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
8798 | |
8799 | static int | |
89e63ee4 | 8800 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
8801 | struct dwarf2_per_cu_data *per_cu, |
8802 | enum language pretend_language) | |
8803 | { | |
8804 | /* We may arrive here during partial symbol reading, if we need full | |
8805 | DIEs to process an unusual case (e.g. template arguments). Do | |
8806 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
ed2dc618 | 8807 | if (per_cu->dwarf2_per_objfile->reading_partial_symbols) |
0907af0c DE |
8808 | { |
8809 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
8810 | return 1; | |
8811 | return 0; | |
8812 | } | |
8813 | ||
8814 | /* Mark the dependence relation so that we don't flush PER_CU | |
8815 | too early. */ | |
89e63ee4 DE |
8816 | if (dependent_cu != NULL) |
8817 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
8818 | |
8819 | /* If it's already on the queue, we have nothing to do. */ | |
8820 | if (per_cu->queued) | |
8821 | return 0; | |
8822 | ||
8823 | /* If the compilation unit is already loaded, just mark it as | |
8824 | used. */ | |
8825 | if (per_cu->cu != NULL) | |
8826 | { | |
8827 | per_cu->cu->last_used = 0; | |
8828 | return 0; | |
8829 | } | |
8830 | ||
8831 | /* Add it to the queue. */ | |
8832 | queue_comp_unit (per_cu, pretend_language); | |
8833 | ||
8834 | return 1; | |
8835 | } | |
8836 | ||
10b3939b DJ |
8837 | /* Process the queue. */ |
8838 | ||
8839 | static void | |
ed2dc618 | 8840 | process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile) |
10b3939b | 8841 | { |
b4f54984 | 8842 | if (dwarf_read_debug) |
45cfd468 DE |
8843 | { |
8844 | fprintf_unfiltered (gdb_stdlog, | |
8845 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 8846 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
8847 | } |
8848 | ||
03dd20cc DJ |
8849 | /* The queue starts out with one item, but following a DIE reference |
8850 | may load a new CU, adding it to the end of the queue. */ | |
39856def | 8851 | while (!dwarf2_per_objfile->queue.empty ()) |
10b3939b | 8852 | { |
39856def TT |
8853 | dwarf2_queue_item &item = dwarf2_per_objfile->queue.front (); |
8854 | ||
cc12ce38 | 8855 | if ((dwarf2_per_objfile->using_index |
39856def TT |
8856 | ? !item.per_cu->v.quick->compunit_symtab |
8857 | : (item.per_cu->v.psymtab && !item.per_cu->v.psymtab->readin)) | |
cc12ce38 | 8858 | /* Skip dummy CUs. */ |
39856def | 8859 | && item.per_cu->cu != NULL) |
f4dc4d17 | 8860 | { |
39856def | 8861 | struct dwarf2_per_cu_data *per_cu = item.per_cu; |
73be47f5 | 8862 | unsigned int debug_print_threshold; |
247f5c4f | 8863 | char buf[100]; |
f4dc4d17 | 8864 | |
247f5c4f | 8865 | if (per_cu->is_debug_types) |
f4dc4d17 | 8866 | { |
247f5c4f DE |
8867 | struct signatured_type *sig_type = |
8868 | (struct signatured_type *) per_cu; | |
8869 | ||
9d8780f0 | 8870 | sprintf (buf, "TU %s at offset %s", |
73be47f5 | 8871 | hex_string (sig_type->signature), |
9d8780f0 | 8872 | sect_offset_str (per_cu->sect_off)); |
73be47f5 DE |
8873 | /* There can be 100s of TUs. |
8874 | Only print them in verbose mode. */ | |
8875 | debug_print_threshold = 2; | |
f4dc4d17 | 8876 | } |
247f5c4f | 8877 | else |
73be47f5 | 8878 | { |
9d8780f0 SM |
8879 | sprintf (buf, "CU at offset %s", |
8880 | sect_offset_str (per_cu->sect_off)); | |
73be47f5 DE |
8881 | debug_print_threshold = 1; |
8882 | } | |
247f5c4f | 8883 | |
b4f54984 | 8884 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 8885 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
8886 | |
8887 | if (per_cu->is_debug_types) | |
39856def | 8888 | process_full_type_unit (per_cu, item.pretend_language); |
f4dc4d17 | 8889 | else |
39856def | 8890 | process_full_comp_unit (per_cu, item.pretend_language); |
f4dc4d17 | 8891 | |
b4f54984 | 8892 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 8893 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 8894 | } |
10b3939b | 8895 | |
39856def TT |
8896 | item.per_cu->queued = 0; |
8897 | dwarf2_per_objfile->queue.pop (); | |
10b3939b DJ |
8898 | } |
8899 | ||
b4f54984 | 8900 | if (dwarf_read_debug) |
45cfd468 DE |
8901 | { |
8902 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 8903 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 8904 | } |
10b3939b DJ |
8905 | } |
8906 | ||
10b3939b DJ |
8907 | /* Read in full symbols for PST, and anything it depends on. */ |
8908 | ||
8566b89b TT |
8909 | void |
8910 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 8911 | { |
194d088f | 8912 | gdb_assert (!readin); |
95554aad | 8913 | |
48993951 | 8914 | expand_dependencies (objfile); |
aaa75496 | 8915 | |
b83470bf TT |
8916 | dw2_do_instantiate_symtab (per_cu_data, false); |
8917 | gdb_assert (get_compunit_symtab () != nullptr); | |
10b3939b DJ |
8918 | } |
8919 | ||
dee91e82 DE |
8920 | /* Trivial hash function for die_info: the hash value of a DIE |
8921 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 8922 | |
dee91e82 DE |
8923 | static hashval_t |
8924 | die_hash (const void *item) | |
10b3939b | 8925 | { |
9a3c8263 | 8926 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 8927 | |
9c541725 | 8928 | return to_underlying (die->sect_off); |
dee91e82 | 8929 | } |
63d06c5c | 8930 | |
dee91e82 DE |
8931 | /* Trivial comparison function for die_info structures: two DIEs |
8932 | are equal if they have the same offset. */ | |
98bfdba5 | 8933 | |
dee91e82 DE |
8934 | static int |
8935 | die_eq (const void *item_lhs, const void *item_rhs) | |
8936 | { | |
9a3c8263 SM |
8937 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
8938 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 8939 | |
9c541725 | 8940 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 8941 | } |
c906108c | 8942 | |
c0ab21c2 | 8943 | /* Load the DIEs associated with PER_CU into memory. */ |
c906108c | 8944 | |
dee91e82 | 8945 | static void |
c0ab21c2 TT |
8946 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
8947 | bool skip_partial, | |
8948 | enum language pretend_language) | |
dee91e82 | 8949 | { |
c0ab21c2 TT |
8950 | gdb_assert (! this_cu->is_debug_types); |
8951 | ||
6751ebae | 8952 | cutu_reader reader (this_cu, NULL, 1, skip_partial); |
c0ab21c2 TT |
8953 | if (reader.dummy_p) |
8954 | return; | |
8955 | ||
8956 | struct dwarf2_cu *cu = reader.cu; | |
8957 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 8958 | |
dee91e82 DE |
8959 | gdb_assert (cu->die_hash == NULL); |
8960 | cu->die_hash = | |
8961 | htab_create_alloc_ex (cu->header.length / 12, | |
8962 | die_hash, | |
8963 | die_eq, | |
8964 | NULL, | |
8965 | &cu->comp_unit_obstack, | |
8966 | hashtab_obstack_allocate, | |
8967 | dummy_obstack_deallocate); | |
e142c38c | 8968 | |
3e225074 | 8969 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
8970 | reader.comp_unit_die->child |
8971 | = read_die_and_siblings (&reader, reader.info_ptr, | |
8972 | &info_ptr, reader.comp_unit_die); | |
8973 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 8974 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
8975 | |
8976 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 8977 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 8978 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
8979 | or we won't be able to build types correctly. |
8980 | Similarly, if we do not read the producer, we can not apply | |
8981 | producer-specific interpretation. */ | |
c0ab21c2 | 8982 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
6751ebae TT |
8983 | |
8984 | reader.keep (); | |
10b3939b DJ |
8985 | } |
8986 | ||
3da10d80 KS |
8987 | /* Add a DIE to the delayed physname list. */ |
8988 | ||
8989 | static void | |
8990 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
8991 | const char *name, struct die_info *die, | |
8992 | struct dwarf2_cu *cu) | |
8993 | { | |
8994 | struct delayed_method_info mi; | |
8995 | mi.type = type; | |
8996 | mi.fnfield_index = fnfield_index; | |
8997 | mi.index = index; | |
8998 | mi.name = name; | |
8999 | mi.die = die; | |
c89b44cd | 9000 | cu->method_list.push_back (mi); |
3da10d80 KS |
9001 | } |
9002 | ||
3693fdb3 PA |
9003 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9004 | "const" / "volatile". If so, decrements LEN by the length of the | |
9005 | modifier and return true. Otherwise return false. */ | |
9006 | ||
9007 | template<size_t N> | |
9008 | static bool | |
9009 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9010 | { | |
9011 | size_t mod_len = sizeof (mod) - 1; | |
9012 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9013 | { | |
9014 | len -= mod_len; | |
9015 | return true; | |
9016 | } | |
9017 | return false; | |
9018 | } | |
9019 | ||
3da10d80 KS |
9020 | /* Compute the physnames of any methods on the CU's method list. |
9021 | ||
9022 | The computation of method physnames is delayed in order to avoid the | |
9023 | (bad) condition that one of the method's formal parameters is of an as yet | |
9024 | incomplete type. */ | |
9025 | ||
9026 | static void | |
9027 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9028 | { | |
3693fdb3 | 9029 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9030 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9031 | return; |
9032 | gdb_assert (cu->language == language_cplus); | |
9033 | ||
52941706 | 9034 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9035 | { |
1d06ead6 | 9036 | const char *physname; |
3da10d80 | 9037 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9038 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9039 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9040 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9041 | = physname ? physname : ""; |
3693fdb3 PA |
9042 | |
9043 | /* Since there's no tag to indicate whether a method is a | |
9044 | const/volatile overload, extract that information out of the | |
9045 | demangled name. */ | |
9046 | if (physname != NULL) | |
9047 | { | |
9048 | size_t len = strlen (physname); | |
9049 | ||
9050 | while (1) | |
9051 | { | |
9052 | if (physname[len] == ')') /* shortcut */ | |
9053 | break; | |
9054 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9055 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9056 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9057 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9058 | else |
9059 | break; | |
9060 | } | |
9061 | } | |
3da10d80 | 9062 | } |
c89b44cd TT |
9063 | |
9064 | /* The list is no longer needed. */ | |
9065 | cu->method_list.clear (); | |
3da10d80 KS |
9066 | } |
9067 | ||
a766d390 DE |
9068 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9069 | and it's not clear if/how imported objects will appear. | |
9070 | To keep Go support simple until that's worked out, | |
9071 | go back through what we've read and create something usable. | |
9072 | We could do this while processing each DIE, and feels kinda cleaner, | |
9073 | but that way is more invasive. | |
9074 | This is to, for example, allow the user to type "p var" or "b main" | |
9075 | without having to specify the package name, and allow lookups | |
9076 | of module.object to work in contexts that use the expression | |
9077 | parser. */ | |
9078 | ||
9079 | static void | |
9080 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9081 | { | |
421d1616 | 9082 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
9083 | struct pending *list; |
9084 | int i; | |
9085 | ||
c24bdb02 | 9086 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9087 | list != NULL; |
9088 | list = list->next) | |
a766d390 DE |
9089 | { |
9090 | for (i = 0; i < list->nsyms; ++i) | |
9091 | { | |
9092 | struct symbol *sym = list->symbol[i]; | |
9093 | ||
c1b5c1eb | 9094 | if (sym->language () == language_go |
a766d390 DE |
9095 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9096 | { | |
421d1616 TT |
9097 | gdb::unique_xmalloc_ptr<char> this_package_name |
9098 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9099 | |
9100 | if (this_package_name == NULL) | |
9101 | continue; | |
9102 | if (package_name == NULL) | |
421d1616 | 9103 | package_name = std::move (this_package_name); |
a766d390 DE |
9104 | else |
9105 | { | |
518817b3 SM |
9106 | struct objfile *objfile |
9107 | = cu->per_cu->dwarf2_per_objfile->objfile; | |
421d1616 | 9108 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9109 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9110 | (symbol_symtab (sym) != NULL |
9111 | ? symtab_to_filename_for_display | |
9112 | (symbol_symtab (sym)) | |
e3b94546 | 9113 | : objfile_name (objfile)), |
421d1616 | 9114 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9115 | } |
9116 | } | |
9117 | } | |
9118 | } | |
9119 | ||
9120 | if (package_name != NULL) | |
9121 | { | |
518817b3 | 9122 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
be1e3d3e | 9123 | const char *saved_package_name = objfile->intern (package_name.get ()); |
19f392bc UW |
9124 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9125 | saved_package_name); | |
a766d390 DE |
9126 | struct symbol *sym; |
9127 | ||
e623cf5d | 9128 | sym = allocate_symbol (objfile); |
d3ecddab | 9129 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9130 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9131 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9132 | e.g., "main" finds the "main" module and not C's main(). */ | |
9133 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9134 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9135 | SYMBOL_TYPE (sym) = type; |
9136 | ||
c24bdb02 | 9137 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9138 | } |
9139 | } | |
9140 | ||
c9317f21 TT |
9141 | /* Allocate a fully-qualified name consisting of the two parts on the |
9142 | obstack. */ | |
9143 | ||
9144 | static const char * | |
9145 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9146 | { | |
9147 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9148 | } | |
9149 | ||
9c6a1327 TT |
9150 | /* A helper that allocates a variant part to attach to a Rust enum |
9151 | type. OBSTACK is where the results should be allocated. TYPE is | |
9152 | the type we're processing. DISCRIMINANT_INDEX is the index of the | |
9153 | discriminant. It must be the index of one of the fields of TYPE. | |
9154 | DEFAULT_INDEX is the index of the default field; or -1 if there is | |
9155 | no default. RANGES is indexed by "effective" field number (the | |
9156 | field index, but omitting the discriminant and default fields) and | |
9157 | must hold the discriminant values used by the variants. Note that | |
9158 | RANGES must have a lifetime at least as long as OBSTACK -- either | |
9159 | already allocated on it, or static. */ | |
c9317f21 | 9160 | |
9c6a1327 TT |
9161 | static void |
9162 | alloc_rust_variant (struct obstack *obstack, struct type *type, | |
9163 | int discriminant_index, int default_index, | |
9164 | gdb::array_view<discriminant_range> ranges) | |
9165 | { | |
9166 | /* When DISCRIMINANT_INDEX == -1, we have a univariant enum. Those | |
9167 | must be handled by the caller. */ | |
9168 | gdb_assert (discriminant_index >= 0 | |
9169 | && discriminant_index < TYPE_NFIELDS (type)); | |
c9317f21 | 9170 | gdb_assert (default_index == -1 |
c7b15a66 | 9171 | || (default_index >= 0 && default_index < TYPE_NFIELDS (type))); |
c9317f21 | 9172 | |
9c6a1327 TT |
9173 | /* We have one variant for each non-discriminant field. */ |
9174 | int n_variants = TYPE_NFIELDS (type) - 1; | |
c9317f21 | 9175 | |
9c6a1327 TT |
9176 | variant *variants = new (obstack) variant[n_variants]; |
9177 | int var_idx = 0; | |
9178 | int range_idx = 0; | |
9179 | for (int i = 0; i < TYPE_NFIELDS (type); ++i) | |
9180 | { | |
9181 | if (i == discriminant_index) | |
9182 | continue; | |
c9317f21 | 9183 | |
9c6a1327 TT |
9184 | variants[var_idx].first_field = i; |
9185 | variants[var_idx].last_field = i + 1; | |
9186 | ||
9187 | /* The default field does not need a range, but other fields do. | |
9188 | We skipped the discriminant above. */ | |
9189 | if (i != default_index) | |
9190 | { | |
9191 | variants[var_idx].discriminants = ranges.slice (range_idx, 1); | |
9192 | ++range_idx; | |
9193 | } | |
c9317f21 | 9194 | |
9c6a1327 TT |
9195 | ++var_idx; |
9196 | } | |
9197 | ||
9198 | gdb_assert (range_idx == ranges.size ()); | |
9199 | gdb_assert (var_idx == n_variants); | |
9200 | ||
9201 | variant_part *part = new (obstack) variant_part; | |
9202 | part->discriminant_index = discriminant_index; | |
9203 | part->is_unsigned = TYPE_UNSIGNED (TYPE_FIELD_TYPE (type, | |
9204 | discriminant_index)); | |
9205 | part->variants = gdb::array_view<variant> (variants, n_variants); | |
9206 | ||
9207 | void *storage = obstack_alloc (obstack, sizeof (gdb::array_view<variant_part>)); | |
9208 | gdb::array_view<variant_part> *prop_value | |
9209 | = new (storage) gdb::array_view<variant_part> (part, 1); | |
c9317f21 | 9210 | |
9c6a1327 TT |
9211 | struct dynamic_prop prop; |
9212 | prop.kind = PROP_VARIANT_PARTS; | |
9213 | prop.data.variant_parts = prop_value; | |
9214 | ||
9215 | add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop, type); | |
c9317f21 TT |
9216 | } |
9217 | ||
9218 | /* Some versions of rustc emitted enums in an unusual way. | |
9219 | ||
9220 | Ordinary enums were emitted as unions. The first element of each | |
9221 | structure in the union was named "RUST$ENUM$DISR". This element | |
9222 | held the discriminant. | |
9223 | ||
9224 | These versions of Rust also implemented the "non-zero" | |
9225 | optimization. When the enum had two values, and one is empty and | |
9226 | the other holds a pointer that cannot be zero, the pointer is used | |
9227 | as the discriminant, with a zero value meaning the empty variant. | |
9228 | Here, the union's first member is of the form | |
9229 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9230 | where the fieldnos are the indices of the fields that should be | |
9231 | traversed in order to find the field (which may be several fields deep) | |
9232 | and the variantname is the name of the variant of the case when the | |
9233 | field is zero. | |
9234 | ||
9235 | This function recognizes whether TYPE is of one of these forms, | |
9236 | and, if so, smashes it to be a variant type. */ | |
9237 | ||
9238 | static void | |
9239 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9240 | { | |
9241 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
9242 | ||
9243 | /* We don't need to deal with empty enums. */ | |
9244 | if (TYPE_NFIELDS (type) == 0) | |
9245 | return; | |
9246 | ||
9247 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
9248 | if (TYPE_NFIELDS (type) == 1 | |
9249 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) | |
9250 | { | |
9251 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9252 | ||
9253 | /* Decode the field name to find the offset of the | |
9254 | discriminant. */ | |
9255 | ULONGEST bit_offset = 0; | |
9256 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); | |
9257 | while (name[0] >= '0' && name[0] <= '9') | |
9258 | { | |
9259 | char *tail; | |
9260 | unsigned long index = strtoul (name, &tail, 10); | |
9261 | name = tail; | |
9262 | if (*name != '$' | |
9263 | || index >= TYPE_NFIELDS (field_type) | |
9264 | || (TYPE_FIELD_LOC_KIND (field_type, index) | |
9265 | != FIELD_LOC_KIND_BITPOS)) | |
9266 | { | |
b98664d3 | 9267 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9268 | "[in module %s]"), |
9269 | TYPE_FIELD_NAME (type, 0), | |
9270 | objfile_name (objfile)); | |
9271 | return; | |
9272 | } | |
9273 | ++name; | |
9274 | ||
9275 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
9276 | field_type = TYPE_FIELD_TYPE (field_type, index); | |
9277 | } | |
9278 | ||
9c6a1327 TT |
9279 | /* Smash this type to be a structure type. We have to do this |
9280 | because the type has already been recorded. */ | |
9281 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9282 | TYPE_NFIELDS (type) = 3; | |
9283 | /* Save the field we care about. */ | |
9284 | struct field saved_field = TYPE_FIELD (type, 0); | |
9285 | TYPE_FIELDS (type) | |
c9317f21 | 9286 | = (struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field)); |
c9317f21 | 9287 | |
9c6a1327 TT |
9288 | /* Put the discriminant at index 0. */ |
9289 | TYPE_FIELD_TYPE (type, 0) = field_type; | |
9290 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; | |
9291 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
9292 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), bit_offset); | |
c9317f21 TT |
9293 | |
9294 | /* The order of fields doesn't really matter, so put the real | |
9295 | field at index 1 and the data-less field at index 2. */ | |
9c6a1327 TT |
9296 | TYPE_FIELD (type, 1) = saved_field; |
9297 | TYPE_FIELD_NAME (type, 1) | |
9298 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (type, 1))); | |
9299 | TYPE_NAME (TYPE_FIELD_TYPE (type, 1)) | |
c9317f21 | 9300 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), |
9c6a1327 | 9301 | TYPE_FIELD_NAME (type, 1)); |
c9317f21 TT |
9302 | |
9303 | const char *dataless_name | |
9304 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
9305 | name); | |
9306 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9307 | dataless_name); | |
9c6a1327 | 9308 | TYPE_FIELD_TYPE (type, 2) = dataless_type; |
c9317f21 TT |
9309 | /* NAME points into the original discriminant name, which |
9310 | already has the correct lifetime. */ | |
9c6a1327 TT |
9311 | TYPE_FIELD_NAME (type, 2) = name; |
9312 | SET_FIELD_BITPOS (TYPE_FIELD (type, 2), 0); | |
c9317f21 | 9313 | |
9c6a1327 TT |
9314 | /* Indicate that this is a variant type. */ |
9315 | static discriminant_range ranges[1] = { { 0, 0 } }; | |
9316 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, ranges); | |
c9317f21 | 9317 | } |
77c2dba3 TT |
9318 | /* A union with a single anonymous field is probably an old-style |
9319 | univariant enum. */ | |
9320 | else if (TYPE_NFIELDS (type) == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) | |
c9317f21 | 9321 | { |
c9317f21 TT |
9322 | /* Smash this type to be a structure type. We have to do this |
9323 | because the type has already been recorded. */ | |
9324 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9325 | ||
9c6a1327 | 9326 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); |
c9317f21 TT |
9327 | const char *variant_name |
9328 | = rust_last_path_segment (TYPE_NAME (field_type)); | |
9c6a1327 | 9329 | TYPE_FIELD_NAME (type, 0) = variant_name; |
c9317f21 TT |
9330 | TYPE_NAME (field_type) |
9331 | = rust_fully_qualify (&objfile->objfile_obstack, | |
c7b15a66 | 9332 | TYPE_NAME (type), variant_name); |
c9317f21 TT |
9333 | } |
9334 | else | |
9335 | { | |
9336 | struct type *disr_type = nullptr; | |
9337 | for (int i = 0; i < TYPE_NFIELDS (type); ++i) | |
9338 | { | |
9339 | disr_type = TYPE_FIELD_TYPE (type, i); | |
9340 | ||
a037790e TT |
9341 | if (TYPE_CODE (disr_type) != TYPE_CODE_STRUCT) |
9342 | { | |
9343 | /* All fields of a true enum will be structs. */ | |
9344 | return; | |
9345 | } | |
9346 | else if (TYPE_NFIELDS (disr_type) == 0) | |
c9317f21 TT |
9347 | { |
9348 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9349 | disr_type = nullptr; |
c9317f21 TT |
9350 | } |
9351 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9352 | "RUST$ENUM$DISR") != 0) | |
9353 | { | |
9354 | /* Not a Rust enum. */ | |
9355 | return; | |
9356 | } | |
9357 | else | |
9358 | { | |
9359 | /* Found one. */ | |
9360 | break; | |
9361 | } | |
9362 | } | |
9363 | ||
9364 | /* If we got here without a discriminant, then it's probably | |
9365 | just a union. */ | |
9366 | if (disr_type == nullptr) | |
9367 | return; | |
9368 | ||
9369 | /* Smash this type to be a structure type. We have to do this | |
9370 | because the type has already been recorded. */ | |
9371 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9372 | ||
9c6a1327 | 9373 | /* Make space for the discriminant field. */ |
c9317f21 | 9374 | struct field *disr_field = &TYPE_FIELD (disr_type, 0); |
9c6a1327 TT |
9375 | field *new_fields |
9376 | = (struct field *) TYPE_ZALLOC (type, (TYPE_NFIELDS (type) | |
9377 | * sizeof (struct field))); | |
9378 | memcpy (new_fields + 1, TYPE_FIELDS (type), | |
c9317f21 | 9379 | TYPE_NFIELDS (type) * sizeof (struct field)); |
9c6a1327 TT |
9380 | TYPE_FIELDS (type) = new_fields; |
9381 | TYPE_NFIELDS (type) = TYPE_NFIELDS (type) + 1; | |
c9317f21 TT |
9382 | |
9383 | /* Install the discriminant at index 0 in the union. */ | |
9c6a1327 TT |
9384 | TYPE_FIELD (type, 0) = *disr_field; |
9385 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; | |
9386 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
c9317f21 TT |
9387 | |
9388 | /* We need a way to find the correct discriminant given a | |
9389 | variant name. For convenience we build a map here. */ | |
9390 | struct type *enum_type = FIELD_TYPE (*disr_field); | |
9391 | std::unordered_map<std::string, ULONGEST> discriminant_map; | |
9392 | for (int i = 0; i < TYPE_NFIELDS (enum_type); ++i) | |
9393 | { | |
9394 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9395 | { | |
9396 | const char *name | |
9397 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9398 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9399 | } | |
9400 | } | |
9401 | ||
9c6a1327 TT |
9402 | int n_fields = TYPE_NFIELDS (type); |
9403 | /* We don't need a range entry for the discriminant, but we do | |
9404 | need one for every other field, as there is no default | |
9405 | variant. */ | |
9406 | discriminant_range *ranges = XOBNEWVEC (&objfile->objfile_obstack, | |
9407 | discriminant_range, | |
9408 | n_fields - 1); | |
c9317f21 TT |
9409 | /* Skip the discriminant here. */ |
9410 | for (int i = 1; i < n_fields; ++i) | |
9411 | { | |
9412 | /* Find the final word in the name of this variant's type. | |
9413 | That name can be used to look up the correct | |
9414 | discriminant. */ | |
9415 | const char *variant_name | |
9c6a1327 | 9416 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (type, i))); |
c9317f21 TT |
9417 | |
9418 | auto iter = discriminant_map.find (variant_name); | |
9419 | if (iter != discriminant_map.end ()) | |
9c6a1327 TT |
9420 | { |
9421 | ranges[i].low = iter->second; | |
9422 | ranges[i].high = iter->second; | |
9423 | } | |
c9317f21 | 9424 | |
bedda9ac | 9425 | /* Remove the discriminant field, if it exists. */ |
9c6a1327 | 9426 | struct type *sub_type = TYPE_FIELD_TYPE (type, i); |
bedda9ac TT |
9427 | if (TYPE_NFIELDS (sub_type) > 0) |
9428 | { | |
9429 | --TYPE_NFIELDS (sub_type); | |
9430 | ++TYPE_FIELDS (sub_type); | |
9431 | } | |
9c6a1327 | 9432 | TYPE_FIELD_NAME (type, i) = variant_name; |
c9317f21 TT |
9433 | TYPE_NAME (sub_type) |
9434 | = rust_fully_qualify (&objfile->objfile_obstack, | |
9435 | TYPE_NAME (type), variant_name); | |
9436 | } | |
9c6a1327 TT |
9437 | |
9438 | /* Indicate that this is a variant type. */ | |
9439 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, | |
9440 | gdb::array_view<discriminant_range> (ranges, | |
9441 | n_fields - 1)); | |
c9317f21 TT |
9442 | } |
9443 | } | |
9444 | ||
9445 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9446 | ||
9447 | static void | |
9448 | rust_union_quirks (struct dwarf2_cu *cu) | |
9449 | { | |
9450 | gdb_assert (cu->language == language_rust); | |
52941706 SM |
9451 | for (type *type_ : cu->rust_unions) |
9452 | quirk_rust_enum (type_, cu->per_cu->dwarf2_per_objfile->objfile); | |
2d79090e TT |
9453 | /* We don't need this any more. */ |
9454 | cu->rust_unions.clear (); | |
c9317f21 TT |
9455 | } |
9456 | ||
95554aad TT |
9457 | /* Return the symtab for PER_CU. This works properly regardless of |
9458 | whether we're using the index or psymtabs. */ | |
9459 | ||
43f3e411 DE |
9460 | static struct compunit_symtab * |
9461 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad | 9462 | { |
ed2dc618 | 9463 | return (per_cu->dwarf2_per_objfile->using_index |
43f3e411 DE |
9464 | ? per_cu->v.quick->compunit_symtab |
9465 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
9466 | } |
9467 | ||
9468 | /* A helper function for computing the list of all symbol tables | |
9469 | included by PER_CU. */ | |
9470 | ||
9471 | static void | |
4c39bc03 | 9472 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9473 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 9474 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 9475 | struct compunit_symtab *immediate_parent) |
95554aad TT |
9476 | { |
9477 | void **slot; | |
43f3e411 | 9478 | struct compunit_symtab *cust; |
95554aad TT |
9479 | |
9480 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
9481 | if (*slot != NULL) | |
9482 | { | |
9483 | /* This inclusion and its children have been processed. */ | |
9484 | return; | |
9485 | } | |
9486 | ||
9487 | *slot = per_cu; | |
9488 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
9489 | cust = get_compunit_symtab (per_cu); |
9490 | if (cust != NULL) | |
ec94af83 DE |
9491 | { |
9492 | /* If this is a type unit only add its symbol table if we haven't | |
9493 | seen it yet (type unit per_cu's can share symtabs). */ | |
9494 | if (per_cu->is_debug_types) | |
9495 | { | |
43f3e411 | 9496 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9497 | if (*slot == NULL) |
9498 | { | |
43f3e411 | 9499 | *slot = cust; |
4c39bc03 | 9500 | result->push_back (cust); |
43f3e411 DE |
9501 | if (cust->user == NULL) |
9502 | cust->user = immediate_parent; | |
ec94af83 DE |
9503 | } |
9504 | } | |
9505 | else | |
f9125b6c | 9506 | { |
4c39bc03 | 9507 | result->push_back (cust); |
43f3e411 DE |
9508 | if (cust->user == NULL) |
9509 | cust->user = immediate_parent; | |
f9125b6c | 9510 | } |
ec94af83 | 9511 | } |
95554aad | 9512 | |
ae640021 AB |
9513 | if (!per_cu->imported_symtabs_empty ()) |
9514 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
9515 | { | |
9516 | recursively_compute_inclusions (result, all_children, | |
9517 | all_type_symtabs, ptr, cust); | |
9518 | } | |
95554aad TT |
9519 | } |
9520 | ||
43f3e411 | 9521 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
9522 | PER_CU. */ |
9523 | ||
9524 | static void | |
43f3e411 | 9525 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 9526 | { |
f4dc4d17 DE |
9527 | gdb_assert (! per_cu->is_debug_types); |
9528 | ||
ae640021 | 9529 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 9530 | { |
ae640021 | 9531 | int len; |
4c39bc03 | 9532 | std::vector<compunit_symtab *> result_symtabs; |
ec94af83 | 9533 | htab_t all_children, all_type_symtabs; |
43f3e411 | 9534 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
9535 | |
9536 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 9537 | if (cust == NULL) |
95554aad TT |
9538 | return; |
9539 | ||
9540 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
9541 | NULL, xcalloc, xfree); | |
ec94af83 DE |
9542 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
9543 | NULL, xcalloc, xfree); | |
95554aad | 9544 | |
ae640021 | 9545 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 DE |
9546 | { |
9547 | recursively_compute_inclusions (&result_symtabs, all_children, | |
ae640021 | 9548 | all_type_symtabs, ptr, cust); |
ec94af83 | 9549 | } |
95554aad | 9550 | |
ec94af83 | 9551 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 9552 | len = result_symtabs.size (); |
43f3e411 | 9553 | cust->includes |
ed2dc618 | 9554 | = XOBNEWVEC (&per_cu->dwarf2_per_objfile->objfile->objfile_obstack, |
8d749320 | 9555 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
9556 | memcpy (cust->includes, result_symtabs.data (), |
9557 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 9558 | cust->includes[len] = NULL; |
95554aad | 9559 | |
95554aad | 9560 | htab_delete (all_children); |
ec94af83 | 9561 | htab_delete (all_type_symtabs); |
95554aad TT |
9562 | } |
9563 | } | |
9564 | ||
9565 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
9566 | read. */ | |
9567 | ||
9568 | static void | |
ed2dc618 | 9569 | process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 9570 | { |
71b73764 | 9571 | for (dwarf2_per_cu_data *iter : dwarf2_per_objfile->just_read_cus) |
f4dc4d17 DE |
9572 | { |
9573 | if (! iter->is_debug_types) | |
43f3e411 | 9574 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 9575 | } |
95554aad | 9576 | |
c5d0225d | 9577 | dwarf2_per_objfile->just_read_cus.clear (); |
95554aad TT |
9578 | } |
9579 | ||
9cdd5dbd | 9580 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
9581 | already been loaded into memory. */ |
9582 | ||
9583 | static void | |
95554aad TT |
9584 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
9585 | enum language pretend_language) | |
10b3939b | 9586 | { |
10b3939b | 9587 | struct dwarf2_cu *cu = per_cu->cu; |
ed2dc618 SM |
9588 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9589 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
08feed99 | 9590 | struct gdbarch *gdbarch = objfile->arch (); |
10b3939b | 9591 | CORE_ADDR lowpc, highpc; |
43f3e411 | 9592 | struct compunit_symtab *cust; |
10b3939b | 9593 | CORE_ADDR baseaddr; |
4359dff1 | 9594 | struct block *static_block; |
3e29f34a | 9595 | CORE_ADDR addr; |
10b3939b | 9596 | |
b3b3bada | 9597 | baseaddr = objfile->text_section_offset (); |
10b3939b | 9598 | |
c89b44cd TT |
9599 | /* Clear the list here in case something was left over. */ |
9600 | cu->method_list.clear (); | |
10b3939b | 9601 | |
95554aad TT |
9602 | cu->language = pretend_language; |
9603 | cu->language_defn = language_def (cu->language); | |
9604 | ||
c906108c | 9605 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 9606 | process_die (cu->dies, cu); |
c906108c | 9607 | |
a766d390 DE |
9608 | /* For now fudge the Go package. */ |
9609 | if (cu->language == language_go) | |
9610 | fixup_go_packaging (cu); | |
9611 | ||
5f48f8f3 | 9612 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
9613 | should be complete, and it should now be safe to compute all of the |
9614 | physnames. */ | |
9615 | compute_delayed_physnames (cu); | |
3da10d80 | 9616 | |
c9317f21 TT |
9617 | if (cu->language == language_rust) |
9618 | rust_union_quirks (cu); | |
9619 | ||
fae299cd DC |
9620 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
9621 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
9622 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 9623 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 9624 | |
3e29f34a | 9625 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 9626 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
9627 | |
9628 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
9629 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
9630 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
9631 | addrmap to help ensure it has an accurate map of pc values belonging to | |
9632 | this comp unit. */ | |
9633 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
9634 | ||
c24bdb02 | 9635 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
9636 | SECT_OFF_TEXT (objfile), |
9637 | 0); | |
c906108c | 9638 | |
43f3e411 | 9639 | if (cust != NULL) |
c906108c | 9640 | { |
df15bd07 | 9641 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 9642 | |
8be455d7 JK |
9643 | /* Set symtab language to language from DW_AT_language. If the |
9644 | compilation is from a C file generated by language preprocessors, do | |
9645 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 9646 | if (!(cu->language == language_c |
40e3ad0e | 9647 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 9648 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
9649 | |
9650 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
9651 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
9652 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
9653 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
9654 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
9655 | |
9656 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
9657 | needed, it would be wrong due to missing DW_AT_producer there. | |
9658 | ||
9659 | Still one can confuse GDB by using non-standard GCC compilation | |
9660 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 9661 | */ |
ab260dad | 9662 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 9663 | cust->locations_valid = 1; |
e0d00bc7 JK |
9664 | |
9665 | if (gcc_4_minor >= 5) | |
43f3e411 | 9666 | cust->epilogue_unwind_valid = 1; |
96408a79 | 9667 | |
43f3e411 | 9668 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 9669 | } |
9291a0cd TT |
9670 | |
9671 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 9672 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
9673 | else |
9674 | { | |
891813be | 9675 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
43f3e411 | 9676 | pst->compunit_symtab = cust; |
6d94535f | 9677 | pst->readin = true; |
9291a0cd | 9678 | } |
c906108c | 9679 | |
95554aad | 9680 | /* Push it for inclusion processing later. */ |
c5d0225d | 9681 | dwarf2_per_objfile->just_read_cus.push_back (per_cu); |
804d2729 TT |
9682 | |
9683 | /* Not needed any more. */ | |
c24bdb02 | 9684 | cu->reset_builder (); |
f4dc4d17 | 9685 | } |
45cfd468 | 9686 | |
f4dc4d17 DE |
9687 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
9688 | already been loaded into memory. */ | |
9689 | ||
9690 | static void | |
9691 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
9692 | enum language pretend_language) | |
9693 | { | |
9694 | struct dwarf2_cu *cu = per_cu->cu; | |
ed2dc618 SM |
9695 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9696 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
43f3e411 | 9697 | struct compunit_symtab *cust; |
0186c6a7 DE |
9698 | struct signatured_type *sig_type; |
9699 | ||
9700 | gdb_assert (per_cu->is_debug_types); | |
9701 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 9702 | |
c89b44cd TT |
9703 | /* Clear the list here in case something was left over. */ |
9704 | cu->method_list.clear (); | |
f4dc4d17 | 9705 | |
f4dc4d17 DE |
9706 | cu->language = pretend_language; |
9707 | cu->language_defn = language_def (cu->language); | |
9708 | ||
9709 | /* The symbol tables are set up in read_type_unit_scope. */ | |
9710 | process_die (cu->dies, cu); | |
9711 | ||
9712 | /* For now fudge the Go package. */ | |
9713 | if (cu->language == language_go) | |
9714 | fixup_go_packaging (cu); | |
9715 | ||
5f48f8f3 | 9716 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
9717 | should be complete, and it should now be safe to compute all of the |
9718 | physnames. */ | |
9719 | compute_delayed_physnames (cu); | |
f4dc4d17 | 9720 | |
c9317f21 TT |
9721 | if (cu->language == language_rust) |
9722 | rust_union_quirks (cu); | |
9723 | ||
f4dc4d17 DE |
9724 | /* TUs share symbol tables. |
9725 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
9726 | of it with end_expandable_symtab. Otherwise, complete the addition of |
9727 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 9728 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 9729 | { |
c24bdb02 KS |
9730 | buildsym_compunit *builder = cu->get_builder (); |
9731 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
43f3e411 | 9732 | sig_type->type_unit_group->compunit_symtab = cust; |
f4dc4d17 | 9733 | |
43f3e411 | 9734 | if (cust != NULL) |
f4dc4d17 DE |
9735 | { |
9736 | /* Set symtab language to language from DW_AT_language. If the | |
9737 | compilation is from a C file generated by language preprocessors, | |
9738 | do not set the language if it was already deduced by | |
9739 | start_subfile. */ | |
43f3e411 DE |
9740 | if (!(cu->language == language_c |
9741 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
9742 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
9743 | } |
9744 | } | |
9745 | else | |
9746 | { | |
c24bdb02 | 9747 | cu->get_builder ()->augment_type_symtab (); |
43f3e411 | 9748 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
9749 | } |
9750 | ||
9751 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 9752 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
9753 | else |
9754 | { | |
891813be | 9755 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
43f3e411 | 9756 | pst->compunit_symtab = cust; |
6d94535f | 9757 | pst->readin = true; |
45cfd468 | 9758 | } |
804d2729 TT |
9759 | |
9760 | /* Not needed any more. */ | |
c24bdb02 | 9761 | cu->reset_builder (); |
c906108c SS |
9762 | } |
9763 | ||
95554aad TT |
9764 | /* Process an imported unit DIE. */ |
9765 | ||
9766 | static void | |
9767 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
9768 | { | |
9769 | struct attribute *attr; | |
9770 | ||
f4dc4d17 DE |
9771 | /* For now we don't handle imported units in type units. */ |
9772 | if (cu->per_cu->is_debug_types) | |
9773 | { | |
9774 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
9775 | " supported in type units [in module %s]"), | |
518817b3 | 9776 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
9777 | } |
9778 | ||
95554aad TT |
9779 | attr = dwarf2_attr (die, DW_AT_import, cu); |
9780 | if (attr != NULL) | |
9781 | { | |
0826b30a | 9782 | sect_offset sect_off = attr->get_ref_die_offset (); |
9c541725 PA |
9783 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
9784 | dwarf2_per_cu_data *per_cu | |
e3b94546 | 9785 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, |
518817b3 | 9786 | cu->per_cu->dwarf2_per_objfile); |
95554aad | 9787 | |
58990295 TV |
9788 | /* We're importing a C++ compilation unit with tag DW_TAG_compile_unit |
9789 | into another compilation unit, at root level. Regard this as a hint, | |
9790 | and ignore it. */ | |
9791 | if (die->parent && die->parent->parent == NULL | |
9792 | && per_cu->unit_type == DW_UT_compile | |
9793 | && per_cu->lang == language_cplus) | |
9794 | return; | |
9795 | ||
69d751e3 | 9796 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad | 9797 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 9798 | load_full_comp_unit (per_cu, false, cu->language); |
95554aad | 9799 | |
ae640021 | 9800 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
9801 | } |
9802 | } | |
9803 | ||
4c8aa72d PA |
9804 | /* RAII object that represents a process_die scope: i.e., |
9805 | starts/finishes processing a DIE. */ | |
9806 | class process_die_scope | |
adde2bff | 9807 | { |
4c8aa72d PA |
9808 | public: |
9809 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
9810 | : m_die (die), m_cu (cu) | |
9811 | { | |
9812 | /* We should only be processing DIEs not already in process. */ | |
9813 | gdb_assert (!m_die->in_process); | |
9814 | m_die->in_process = true; | |
9815 | } | |
8c3cb9fa | 9816 | |
4c8aa72d PA |
9817 | ~process_die_scope () |
9818 | { | |
9819 | m_die->in_process = false; | |
9820 | ||
9821 | /* If we're done processing the DIE for the CU that owns the line | |
9822 | header, we don't need the line header anymore. */ | |
9823 | if (m_cu->line_header_die_owner == m_die) | |
9824 | { | |
9825 | delete m_cu->line_header; | |
9826 | m_cu->line_header = NULL; | |
9827 | m_cu->line_header_die_owner = NULL; | |
9828 | } | |
9829 | } | |
9830 | ||
9831 | private: | |
9832 | die_info *m_die; | |
9833 | dwarf2_cu *m_cu; | |
9834 | }; | |
adde2bff | 9835 | |
c906108c SS |
9836 | /* Process a die and its children. */ |
9837 | ||
9838 | static void | |
e7c27a73 | 9839 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9840 | { |
4c8aa72d | 9841 | process_die_scope scope (die, cu); |
adde2bff | 9842 | |
c906108c SS |
9843 | switch (die->tag) |
9844 | { | |
9845 | case DW_TAG_padding: | |
9846 | break; | |
9847 | case DW_TAG_compile_unit: | |
95554aad | 9848 | case DW_TAG_partial_unit: |
e7c27a73 | 9849 | read_file_scope (die, cu); |
c906108c | 9850 | break; |
348e048f DE |
9851 | case DW_TAG_type_unit: |
9852 | read_type_unit_scope (die, cu); | |
9853 | break; | |
c906108c | 9854 | case DW_TAG_subprogram: |
0a4b0913 AB |
9855 | /* Nested subprograms in Fortran get a prefix. */ |
9856 | if (cu->language == language_fortran | |
9857 | && die->parent != NULL | |
9858 | && die->parent->tag == DW_TAG_subprogram) | |
9859 | cu->processing_has_namespace_info = true; | |
9860 | /* Fall through. */ | |
c906108c | 9861 | case DW_TAG_inlined_subroutine: |
edb3359d | 9862 | read_func_scope (die, cu); |
c906108c SS |
9863 | break; |
9864 | case DW_TAG_lexical_block: | |
14898363 L |
9865 | case DW_TAG_try_block: |
9866 | case DW_TAG_catch_block: | |
e7c27a73 | 9867 | read_lexical_block_scope (die, cu); |
c906108c | 9868 | break; |
216f72a1 | 9869 | case DW_TAG_call_site: |
96408a79 SA |
9870 | case DW_TAG_GNU_call_site: |
9871 | read_call_site_scope (die, cu); | |
9872 | break; | |
c906108c | 9873 | case DW_TAG_class_type: |
680b30c7 | 9874 | case DW_TAG_interface_type: |
c906108c SS |
9875 | case DW_TAG_structure_type: |
9876 | case DW_TAG_union_type: | |
134d01f1 | 9877 | process_structure_scope (die, cu); |
c906108c SS |
9878 | break; |
9879 | case DW_TAG_enumeration_type: | |
134d01f1 | 9880 | process_enumeration_scope (die, cu); |
c906108c | 9881 | break; |
134d01f1 | 9882 | |
f792889a DJ |
9883 | /* These dies have a type, but processing them does not create |
9884 | a symbol or recurse to process the children. Therefore we can | |
9885 | read them on-demand through read_type_die. */ | |
c906108c | 9886 | case DW_TAG_subroutine_type: |
72019c9c | 9887 | case DW_TAG_set_type: |
c906108c | 9888 | case DW_TAG_array_type: |
c906108c | 9889 | case DW_TAG_pointer_type: |
c906108c | 9890 | case DW_TAG_ptr_to_member_type: |
c906108c | 9891 | case DW_TAG_reference_type: |
4297a3f0 | 9892 | case DW_TAG_rvalue_reference_type: |
c906108c | 9893 | case DW_TAG_string_type: |
c906108c | 9894 | break; |
134d01f1 | 9895 | |
c906108c | 9896 | case DW_TAG_base_type: |
a02abb62 | 9897 | case DW_TAG_subrange_type: |
cb249c71 | 9898 | case DW_TAG_typedef: |
134d01f1 DJ |
9899 | /* Add a typedef symbol for the type definition, if it has a |
9900 | DW_AT_name. */ | |
f792889a | 9901 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 9902 | break; |
c906108c | 9903 | case DW_TAG_common_block: |
e7c27a73 | 9904 | read_common_block (die, cu); |
c906108c SS |
9905 | break; |
9906 | case DW_TAG_common_inclusion: | |
9907 | break; | |
d9fa45fe | 9908 | case DW_TAG_namespace: |
9068261f | 9909 | cu->processing_has_namespace_info = true; |
e7c27a73 | 9910 | read_namespace (die, cu); |
d9fa45fe | 9911 | break; |
5d7cb8df | 9912 | case DW_TAG_module: |
9068261f | 9913 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
9914 | read_module (die, cu); |
9915 | break; | |
d9fa45fe | 9916 | case DW_TAG_imported_declaration: |
9068261f | 9917 | cu->processing_has_namespace_info = true; |
74921315 KS |
9918 | if (read_namespace_alias (die, cu)) |
9919 | break; | |
86a73007 TT |
9920 | /* The declaration is not a global namespace alias. */ |
9921 | /* Fall through. */ | |
d9fa45fe | 9922 | case DW_TAG_imported_module: |
9068261f | 9923 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
9924 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
9925 | || cu->language != language_fortran)) | |
b98664d3 | 9926 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
9927 | dwarf_tag_name (die->tag)); |
9928 | read_import_statement (die, cu); | |
d9fa45fe | 9929 | break; |
95554aad TT |
9930 | |
9931 | case DW_TAG_imported_unit: | |
9932 | process_imported_unit_die (die, cu); | |
9933 | break; | |
9934 | ||
71a3c369 TT |
9935 | case DW_TAG_variable: |
9936 | read_variable (die, cu); | |
9937 | break; | |
9938 | ||
c906108c | 9939 | default: |
e7c27a73 | 9940 | new_symbol (die, NULL, cu); |
c906108c SS |
9941 | break; |
9942 | } | |
9943 | } | |
ca69b9e6 DE |
9944 | \f |
9945 | /* DWARF name computation. */ | |
c906108c | 9946 | |
94af9270 KS |
9947 | /* A helper function for dwarf2_compute_name which determines whether DIE |
9948 | needs to have the name of the scope prepended to the name listed in the | |
9949 | die. */ | |
9950 | ||
9951 | static int | |
9952 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
9953 | { | |
1c809c68 TT |
9954 | struct attribute *attr; |
9955 | ||
94af9270 KS |
9956 | switch (die->tag) |
9957 | { | |
9958 | case DW_TAG_namespace: | |
9959 | case DW_TAG_typedef: | |
9960 | case DW_TAG_class_type: | |
9961 | case DW_TAG_interface_type: | |
9962 | case DW_TAG_structure_type: | |
9963 | case DW_TAG_union_type: | |
9964 | case DW_TAG_enumeration_type: | |
9965 | case DW_TAG_enumerator: | |
9966 | case DW_TAG_subprogram: | |
08a76f8a | 9967 | case DW_TAG_inlined_subroutine: |
94af9270 | 9968 | case DW_TAG_member: |
74921315 | 9969 | case DW_TAG_imported_declaration: |
94af9270 KS |
9970 | return 1; |
9971 | ||
9972 | case DW_TAG_variable: | |
c2b0a229 | 9973 | case DW_TAG_constant: |
94af9270 KS |
9974 | /* We only need to prefix "globally" visible variables. These include |
9975 | any variable marked with DW_AT_external or any variable that | |
9976 | lives in a namespace. [Variables in anonymous namespaces | |
9977 | require prefixing, but they are not DW_AT_external.] */ | |
9978 | ||
9979 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
9980 | { | |
9981 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 9982 | |
94af9270 KS |
9983 | return die_needs_namespace (die_specification (die, &spec_cu), |
9984 | spec_cu); | |
9985 | } | |
9986 | ||
1c809c68 | 9987 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
9988 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
9989 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
9990 | return 0; |
9991 | /* A variable in a lexical block of some kind does not need a | |
9992 | namespace, even though in C++ such variables may be external | |
9993 | and have a mangled name. */ | |
9994 | if (die->parent->tag == DW_TAG_lexical_block | |
9995 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
9996 | || die->parent->tag == DW_TAG_catch_block |
9997 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
9998 | return 0; |
9999 | return 1; | |
94af9270 KS |
10000 | |
10001 | default: | |
10002 | return 0; | |
10003 | } | |
10004 | } | |
10005 | ||
73b9be8b KS |
10006 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10007 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10008 | defined for the given DIE. */ | |
10009 | ||
10010 | static struct attribute * | |
10011 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10012 | { | |
10013 | struct attribute *attr; | |
10014 | ||
10015 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10016 | if (attr == NULL) | |
10017 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10018 | ||
10019 | return attr; | |
10020 | } | |
10021 | ||
10022 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10023 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10024 | defined for the given DIE. */ | |
10025 | ||
10026 | static const char * | |
10027 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10028 | { | |
10029 | const char *linkage_name; | |
10030 | ||
10031 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10032 | if (linkage_name == NULL) | |
10033 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10034 | ||
787de330 TT |
10035 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10036 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10037 | if (cu->language == language_rust && linkage_name != NULL | |
10038 | && strchr (linkage_name, '{') != NULL) | |
10039 | linkage_name = NULL; | |
10040 | ||
73b9be8b KS |
10041 | return linkage_name; |
10042 | } | |
10043 | ||
94af9270 | 10044 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10045 | compute the physname for the object, which include a method's: |
9c37b5ae | 10046 | - formal parameters (C++), |
a766d390 | 10047 | - receiver type (Go), |
a766d390 DE |
10048 | |
10049 | The term "physname" is a bit confusing. | |
10050 | For C++, for example, it is the demangled name. | |
10051 | For Go, for example, it's the mangled name. | |
94af9270 | 10052 | |
af6b7be1 JB |
10053 | For Ada, return the DIE's linkage name rather than the fully qualified |
10054 | name. PHYSNAME is ignored.. | |
10055 | ||
94af9270 KS |
10056 | The result is allocated on the objfile_obstack and canonicalized. */ |
10057 | ||
10058 | static const char * | |
15d034d0 TT |
10059 | dwarf2_compute_name (const char *name, |
10060 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10061 | int physname) |
10062 | { | |
518817b3 | 10063 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
bb5ed363 | 10064 | |
94af9270 KS |
10065 | if (name == NULL) |
10066 | name = dwarf2_name (die, cu); | |
10067 | ||
2ee7123e DE |
10068 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10069 | but otherwise compute it by typename_concat inside GDB. | |
10070 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 10071 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 10072 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10073 | will set the demangled name to the result of dwarf2_full_name, and it is |
10074 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10075 | if (cu->language == language_ada |
10076 | || (cu->language == language_fortran && physname)) | |
10077 | { | |
10078 | /* For Ada unit, we prefer the linkage name over the name, as | |
10079 | the former contains the exported name, which the user expects | |
10080 | to be able to reference. Ideally, we want the user to be able | |
10081 | to reference this entity using either natural or linkage name, | |
10082 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10083 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10084 | |
2ee7123e DE |
10085 | if (linkage_name != NULL) |
10086 | return linkage_name; | |
f55ee35c JK |
10087 | } |
10088 | ||
94af9270 KS |
10089 | /* These are the only languages we know how to qualify names in. */ |
10090 | if (name != NULL | |
9c37b5ae | 10091 | && (cu->language == language_cplus |
c44af4eb TT |
10092 | || cu->language == language_fortran || cu->language == language_d |
10093 | || cu->language == language_rust)) | |
94af9270 KS |
10094 | { |
10095 | if (die_needs_namespace (die, cu)) | |
10096 | { | |
0d5cff50 | 10097 | const char *prefix; |
34a68019 | 10098 | const char *canonical_name = NULL; |
94af9270 | 10099 | |
d7e74731 PA |
10100 | string_file buf; |
10101 | ||
94af9270 | 10102 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10103 | if (*prefix != '\0') |
10104 | { | |
43816ebc TT |
10105 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10106 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10107 | |
43816ebc | 10108 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10109 | } |
10110 | else | |
d7e74731 | 10111 | buf.puts (name); |
94af9270 | 10112 | |
98bfdba5 PA |
10113 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10114 | as children with DW_TAG_template_type_param or | |
10115 | DW_TAG_value_type_param. If the latter, add them to the name | |
10116 | here. If the name already has template parameters, then | |
10117 | skip this step; some versions of GCC emit both, and | |
10118 | it is more efficient to use the pre-computed name. | |
10119 | ||
10120 | Something to keep in mind about this process: it is very | |
10121 | unlikely, or in some cases downright impossible, to produce | |
10122 | something that will match the mangled name of a function. | |
10123 | If the definition of the function has the same debug info, | |
10124 | we should be able to match up with it anyway. But fallbacks | |
10125 | using the minimal symbol, for instance to find a method | |
10126 | implemented in a stripped copy of libstdc++, will not work. | |
10127 | If we do not have debug info for the definition, we will have to | |
10128 | match them up some other way. | |
10129 | ||
10130 | When we do name matching there is a related problem with function | |
10131 | templates; two instantiated function templates are allowed to | |
10132 | differ only by their return types, which we do not add here. */ | |
10133 | ||
10134 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10135 | { | |
10136 | struct attribute *attr; | |
10137 | struct die_info *child; | |
10138 | int first = 1; | |
10139 | ||
10140 | die->building_fullname = 1; | |
10141 | ||
10142 | for (child = die->child; child != NULL; child = child->sibling) | |
10143 | { | |
10144 | struct type *type; | |
12df843f | 10145 | LONGEST value; |
d521ce57 | 10146 | const gdb_byte *bytes; |
98bfdba5 PA |
10147 | struct dwarf2_locexpr_baton *baton; |
10148 | struct value *v; | |
10149 | ||
10150 | if (child->tag != DW_TAG_template_type_param | |
10151 | && child->tag != DW_TAG_template_value_param) | |
10152 | continue; | |
10153 | ||
10154 | if (first) | |
10155 | { | |
d7e74731 | 10156 | buf.puts ("<"); |
98bfdba5 PA |
10157 | first = 0; |
10158 | } | |
10159 | else | |
d7e74731 | 10160 | buf.puts (", "); |
98bfdba5 PA |
10161 | |
10162 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10163 | if (attr == NULL) | |
10164 | { | |
b98664d3 | 10165 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10166 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10167 | continue; |
10168 | } | |
10169 | type = die_type (child, cu); | |
10170 | ||
10171 | if (child->tag == DW_TAG_template_type_param) | |
10172 | { | |
c1ec8cea TT |
10173 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10174 | &type_print_raw_options); | |
98bfdba5 PA |
10175 | continue; |
10176 | } | |
10177 | ||
10178 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10179 | if (attr == NULL) | |
10180 | { | |
b98664d3 | 10181 | complaint (_("template parameter missing " |
3e43a32a | 10182 | "DW_AT_const_value")); |
d7e74731 | 10183 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10184 | continue; |
10185 | } | |
10186 | ||
10187 | dwarf2_const_value_attr (attr, type, name, | |
10188 | &cu->comp_unit_obstack, cu, | |
10189 | &value, &bytes, &baton); | |
10190 | ||
10191 | if (TYPE_NOSIGN (type)) | |
10192 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
10193 | changed, this can use value_print instead. */ | |
d7e74731 | 10194 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10195 | else |
10196 | { | |
10197 | struct value_print_options opts; | |
10198 | ||
10199 | if (baton != NULL) | |
10200 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10201 | baton->data, | |
10202 | baton->size, | |
10203 | baton->per_cu); | |
10204 | else if (bytes != NULL) | |
10205 | { | |
10206 | v = allocate_value (type); | |
10207 | memcpy (value_contents_writeable (v), bytes, | |
10208 | TYPE_LENGTH (type)); | |
10209 | } | |
10210 | else | |
10211 | v = value_from_longest (type, value); | |
10212 | ||
3e43a32a MS |
10213 | /* Specify decimal so that we do not depend on |
10214 | the radix. */ | |
98bfdba5 PA |
10215 | get_formatted_print_options (&opts, 'd'); |
10216 | opts.raw = 1; | |
d7e74731 | 10217 | value_print (v, &buf, &opts); |
98bfdba5 | 10218 | release_value (v); |
98bfdba5 PA |
10219 | } |
10220 | } | |
10221 | ||
10222 | die->building_fullname = 0; | |
10223 | ||
10224 | if (!first) | |
10225 | { | |
10226 | /* Close the argument list, with a space if necessary | |
10227 | (nested templates). */ | |
d7e74731 PA |
10228 | if (!buf.empty () && buf.string ().back () == '>') |
10229 | buf.puts (" >"); | |
98bfdba5 | 10230 | else |
d7e74731 | 10231 | buf.puts (">"); |
98bfdba5 PA |
10232 | } |
10233 | } | |
10234 | ||
9c37b5ae | 10235 | /* For C++ methods, append formal parameter type |
94af9270 | 10236 | information, if PHYSNAME. */ |
6e70227d | 10237 | |
94af9270 | 10238 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10239 | && cu->language == language_cplus) |
94af9270 KS |
10240 | { |
10241 | struct type *type = read_type_die (die, cu); | |
10242 | ||
d7e74731 | 10243 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10244 | &type_print_raw_options); |
94af9270 | 10245 | |
9c37b5ae | 10246 | if (cu->language == language_cplus) |
94af9270 | 10247 | { |
60430eff DJ |
10248 | /* Assume that an artificial first parameter is |
10249 | "this", but do not crash if it is not. RealView | |
10250 | marks unnamed (and thus unused) parameters as | |
10251 | artificial; there is no way to differentiate | |
10252 | the two cases. */ | |
94af9270 KS |
10253 | if (TYPE_NFIELDS (type) > 0 |
10254 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 10255 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
10256 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
10257 | 0)))) | |
d7e74731 | 10258 | buf.puts (" const"); |
94af9270 KS |
10259 | } |
10260 | } | |
10261 | ||
d7e74731 | 10262 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10263 | |
10264 | if (cu->language == language_cplus) | |
34a68019 | 10265 | canonical_name |
322a8516 | 10266 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
be1e3d3e | 10267 | objfile); |
34a68019 TT |
10268 | |
10269 | /* If we only computed INTERMEDIATE_NAME, or if | |
10270 | INTERMEDIATE_NAME is already canonical, then we need to | |
be1e3d3e | 10271 | intern it. */ |
322a8516 | 10272 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
be1e3d3e | 10273 | name = objfile->intern (intermediate_name); |
34a68019 TT |
10274 | else |
10275 | name = canonical_name; | |
94af9270 KS |
10276 | } |
10277 | } | |
10278 | ||
10279 | return name; | |
10280 | } | |
10281 | ||
0114d602 DJ |
10282 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10283 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10284 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10285 | not have a name. NAME may either be from a previous call to |
10286 | dwarf2_name or NULL. | |
10287 | ||
9c37b5ae | 10288 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10289 | |
10290 | static const char * | |
15d034d0 | 10291 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10292 | { |
94af9270 KS |
10293 | return dwarf2_compute_name (name, die, cu, 0); |
10294 | } | |
0114d602 | 10295 | |
94af9270 KS |
10296 | /* Construct a physname for the given DIE in CU. NAME may either be |
10297 | from a previous call to dwarf2_name or NULL. The result will be | |
10298 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10299 | name. | |
0114d602 | 10300 | |
9c37b5ae | 10301 | The output string will be canonicalized (if C++). */ |
0114d602 | 10302 | |
94af9270 | 10303 | static const char * |
15d034d0 | 10304 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10305 | { |
518817b3 | 10306 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
900e11f9 | 10307 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10308 | int need_copy = 1; |
10309 | ||
10310 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10311 | on its own. */ | |
10312 | if (!die_needs_namespace (die, cu)) | |
10313 | return dwarf2_compute_name (name, die, cu, 1); | |
10314 | ||
73b9be8b | 10315 | mangled = dw2_linkage_name (die, cu); |
900e11f9 JK |
10316 | |
10317 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
10318 | has computed. */ | |
791afaa2 | 10319 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10320 | if (mangled != NULL) |
900e11f9 | 10321 | { |
900e11f9 | 10322 | |
59cc4834 JB |
10323 | if (language_def (cu->language)->la_store_sym_names_in_linkage_form_p) |
10324 | { | |
10325 | /* Do nothing (do not demangle the symbol name). */ | |
10326 | } | |
10327 | else if (cu->language == language_go) | |
a766d390 | 10328 | { |
5e2db402 TT |
10329 | /* This is a lie, but we already lie to the caller new_symbol. |
10330 | new_symbol assumes we return the mangled name. | |
a766d390 | 10331 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
10332 | } |
10333 | else | |
10334 | { | |
0eb876f5 JB |
10335 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10336 | their return type. It is easier for GDB users to search | |
10337 | for such functions as `name(params)' than `long name(params)'. | |
10338 | In such case the minimal symbol names do not match the full | |
10339 | symbol names but for template functions there is never a need | |
10340 | to look up their definition from their declaration so | |
10341 | the only disadvantage remains the minimal symbol variant | |
10342 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10343 | demangled.reset (gdb_demangle (mangled, |
10344 | (DMGL_PARAMS | DMGL_ANSI | |
10345 | | DMGL_RET_DROP))); | |
a766d390 | 10346 | } |
900e11f9 | 10347 | if (demangled) |
791afaa2 | 10348 | canon = demangled.get (); |
900e11f9 JK |
10349 | else |
10350 | { | |
10351 | canon = mangled; | |
10352 | need_copy = 0; | |
10353 | } | |
10354 | } | |
10355 | ||
10356 | if (canon == NULL || check_physname) | |
10357 | { | |
10358 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10359 | ||
10360 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10361 | { | |
10362 | /* It may not mean a bug in GDB. The compiler could also | |
10363 | compute DW_AT_linkage_name incorrectly. But in such case | |
10364 | GDB would need to be bug-to-bug compatible. */ | |
10365 | ||
b98664d3 | 10366 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10367 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10368 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10369 | objfile_name (objfile)); |
900e11f9 JK |
10370 | |
10371 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10372 | is available here - over computed PHYSNAME. It is safer | |
10373 | against both buggy GDB and buggy compilers. */ | |
10374 | ||
10375 | retval = canon; | |
10376 | } | |
10377 | else | |
10378 | { | |
10379 | retval = physname; | |
10380 | need_copy = 0; | |
10381 | } | |
10382 | } | |
10383 | else | |
10384 | retval = canon; | |
10385 | ||
10386 | if (need_copy) | |
be1e3d3e | 10387 | retval = objfile->intern (retval); |
900e11f9 | 10388 | |
900e11f9 | 10389 | return retval; |
0114d602 DJ |
10390 | } |
10391 | ||
74921315 KS |
10392 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10393 | a new symbol for it. | |
10394 | ||
10395 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10396 | ||
10397 | static int | |
10398 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10399 | { | |
10400 | struct attribute *attr; | |
10401 | ||
10402 | /* If the die does not have a name, this is not a namespace | |
10403 | alias. */ | |
10404 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10405 | if (attr != NULL) | |
10406 | { | |
10407 | int num; | |
10408 | struct die_info *d = die; | |
10409 | struct dwarf2_cu *imported_cu = cu; | |
10410 | ||
10411 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10412 | keep inspecting DIEs until we hit the underlying import. */ | |
10413 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10414 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10415 | { | |
10416 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10417 | if (attr == NULL) | |
10418 | break; | |
10419 | ||
10420 | d = follow_die_ref (d, attr, &imported_cu); | |
10421 | if (d->tag != DW_TAG_imported_declaration) | |
10422 | break; | |
10423 | } | |
10424 | ||
10425 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10426 | { | |
b98664d3 | 10427 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10428 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10429 | return 0; |
10430 | } | |
10431 | ||
10432 | if (attr != NULL) | |
10433 | { | |
10434 | struct type *type; | |
0826b30a | 10435 | sect_offset sect_off = attr->get_ref_die_offset (); |
74921315 | 10436 | |
9c541725 | 10437 | type = get_die_type_at_offset (sect_off, cu->per_cu); |
74921315 KS |
10438 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
10439 | { | |
10440 | /* This declaration is a global namespace alias. Add | |
10441 | a symbol for it whose type is the aliased namespace. */ | |
10442 | new_symbol (die, type, cu); | |
10443 | return 1; | |
10444 | } | |
10445 | } | |
10446 | } | |
10447 | ||
10448 | return 0; | |
10449 | } | |
10450 | ||
22cee43f | 10451 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10452 | current context for CU. |
22cee43f PMR |
10453 | |
10454 | For Ada, imported declarations can materialize renamings, which *may* be | |
10455 | global. However it is impossible (for now?) in DWARF to distinguish | |
10456 | "external" imported declarations and "static" ones. As all imported | |
10457 | declarations seem to be static in all other languages, make them all CU-wide | |
10458 | global only in Ada. */ | |
10459 | ||
10460 | static struct using_direct ** | |
804d2729 | 10461 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10462 | { |
c24bdb02 KS |
10463 | if (cu->language == language_ada |
10464 | && cu->get_builder ()->outermost_context_p ()) | |
10465 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10466 | else |
c24bdb02 | 10467 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10468 | } |
10469 | ||
27aa8d6a SW |
10470 | /* Read the import statement specified by the given die and record it. */ |
10471 | ||
10472 | static void | |
10473 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10474 | { | |
518817b3 | 10475 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
27aa8d6a | 10476 | struct attribute *import_attr; |
32019081 | 10477 | struct die_info *imported_die, *child_die; |
de4affc9 | 10478 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10479 | const char *imported_name; |
794684b6 | 10480 | const char *imported_name_prefix; |
13387711 SW |
10481 | const char *canonical_name; |
10482 | const char *import_alias; | |
10483 | const char *imported_declaration = NULL; | |
794684b6 | 10484 | const char *import_prefix; |
eb1e02fd | 10485 | std::vector<const char *> excludes; |
13387711 | 10486 | |
27aa8d6a SW |
10487 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10488 | if (import_attr == NULL) | |
10489 | { | |
b98664d3 | 10490 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10491 | dwarf_tag_name (die->tag)); |
10492 | return; | |
10493 | } | |
10494 | ||
de4affc9 CC |
10495 | imported_cu = cu; |
10496 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10497 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10498 | if (imported_name == NULL) |
10499 | { | |
10500 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10501 | ||
10502 | The import in the following code: | |
10503 | namespace A | |
10504 | { | |
10505 | typedef int B; | |
10506 | } | |
10507 | ||
10508 | int main () | |
10509 | { | |
10510 | using A::B; | |
10511 | B b; | |
10512 | return b; | |
10513 | } | |
10514 | ||
10515 | ... | |
10516 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
10517 | <52> DW_AT_decl_file : 1 | |
10518 | <53> DW_AT_decl_line : 6 | |
10519 | <54> DW_AT_import : <0x75> | |
10520 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
10521 | <59> DW_AT_name : B | |
10522 | <5b> DW_AT_decl_file : 1 | |
10523 | <5c> DW_AT_decl_line : 2 | |
10524 | <5d> DW_AT_type : <0x6e> | |
10525 | ... | |
10526 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
10527 | <76> DW_AT_byte_size : 4 | |
10528 | <77> DW_AT_encoding : 5 (signed) | |
10529 | ||
10530 | imports the wrong die ( 0x75 instead of 0x58 ). | |
10531 | This case will be ignored until the gcc bug is fixed. */ | |
10532 | return; | |
10533 | } | |
10534 | ||
82856980 SW |
10535 | /* Figure out the local name after import. */ |
10536 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 10537 | |
794684b6 SW |
10538 | /* Figure out where the statement is being imported to. */ |
10539 | import_prefix = determine_prefix (die, cu); | |
10540 | ||
10541 | /* Figure out what the scope of the imported die is and prepend it | |
10542 | to the name of the imported die. */ | |
de4affc9 | 10543 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 10544 | |
f55ee35c JK |
10545 | if (imported_die->tag != DW_TAG_namespace |
10546 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 10547 | { |
13387711 SW |
10548 | imported_declaration = imported_name; |
10549 | canonical_name = imported_name_prefix; | |
794684b6 | 10550 | } |
13387711 | 10551 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 10552 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
10553 | imported_name_prefix, |
10554 | (cu->language == language_d ? "." : "::"), | |
10555 | imported_name, (char *) NULL); | |
13387711 SW |
10556 | else |
10557 | canonical_name = imported_name; | |
794684b6 | 10558 | |
32019081 JK |
10559 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
10560 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 10561 | child_die = child_die->sibling) |
32019081 JK |
10562 | { |
10563 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
10564 | represented by an imported module entry with an import attribute | |
10565 | referring to the module and owned entries corresponding to those | |
10566 | entities that are renamed as part of being imported. */ | |
10567 | ||
10568 | if (child_die->tag != DW_TAG_imported_declaration) | |
10569 | { | |
b98664d3 | 10570 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
10571 | "- DIE at %s [in module %s]"), |
10572 | sect_offset_str (child_die->sect_off), | |
10573 | objfile_name (objfile)); | |
32019081 JK |
10574 | continue; |
10575 | } | |
10576 | ||
10577 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
10578 | if (import_attr == NULL) | |
10579 | { | |
b98664d3 | 10580 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
10581 | dwarf_tag_name (child_die->tag)); |
10582 | continue; | |
10583 | } | |
10584 | ||
10585 | imported_cu = cu; | |
10586 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
10587 | &imported_cu); | |
10588 | imported_name = dwarf2_name (imported_die, imported_cu); | |
10589 | if (imported_name == NULL) | |
10590 | { | |
b98664d3 | 10591 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
10592 | "imported name - DIE at %s [in module %s]"), |
10593 | sect_offset_str (child_die->sect_off), | |
10594 | objfile_name (objfile)); | |
32019081 JK |
10595 | continue; |
10596 | } | |
10597 | ||
eb1e02fd | 10598 | excludes.push_back (imported_name); |
32019081 JK |
10599 | |
10600 | process_die (child_die, cu); | |
10601 | } | |
10602 | ||
804d2729 | 10603 | add_using_directive (using_directives (cu), |
22cee43f PMR |
10604 | import_prefix, |
10605 | canonical_name, | |
10606 | import_alias, | |
10607 | imported_declaration, | |
10608 | excludes, | |
10609 | 0, | |
10610 | &objfile->objfile_obstack); | |
27aa8d6a SW |
10611 | } |
10612 | ||
5230b05a WT |
10613 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
10614 | types, but gives them a size of zero. Starting with version 14, | |
10615 | ICC is compatible with GCC. */ | |
10616 | ||
9068261f | 10617 | static bool |
5230b05a WT |
10618 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
10619 | { | |
10620 | if (!cu->checked_producer) | |
10621 | check_producer (cu); | |
10622 | ||
10623 | return cu->producer_is_icc_lt_14; | |
10624 | } | |
10625 | ||
eb77c9df AB |
10626 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
10627 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
10628 | which says that void functions should not have a DW_AT_type. */ | |
10629 | ||
10630 | static bool | |
10631 | producer_is_icc (struct dwarf2_cu *cu) | |
10632 | { | |
10633 | if (!cu->checked_producer) | |
10634 | check_producer (cu); | |
10635 | ||
10636 | return cu->producer_is_icc; | |
10637 | } | |
10638 | ||
1b80a9fa JK |
10639 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
10640 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
10641 | this, it was first present in GCC release 4.3.0. */ | |
10642 | ||
9068261f | 10643 | static bool |
1b80a9fa JK |
10644 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
10645 | { | |
10646 | if (!cu->checked_producer) | |
10647 | check_producer (cu); | |
10648 | ||
10649 | return cu->producer_is_gcc_lt_4_3; | |
10650 | } | |
10651 | ||
d721ba37 PA |
10652 | static file_and_directory |
10653 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 10654 | { |
d721ba37 PA |
10655 | file_and_directory res; |
10656 | ||
9291a0cd TT |
10657 | /* Find the filename. Do not use dwarf2_name here, since the filename |
10658 | is not a source language identifier. */ | |
d721ba37 PA |
10659 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
10660 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 10661 | |
d721ba37 PA |
10662 | if (res.comp_dir == NULL |
10663 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
10664 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 10665 | { |
d721ba37 PA |
10666 | res.comp_dir_storage = ldirname (res.name); |
10667 | if (!res.comp_dir_storage.empty ()) | |
10668 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 10669 | } |
d721ba37 | 10670 | if (res.comp_dir != NULL) |
9291a0cd TT |
10671 | { |
10672 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
10673 | directory, get rid of it. */ | |
d721ba37 | 10674 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 10675 | |
d721ba37 PA |
10676 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
10677 | res.comp_dir = cp + 1; | |
9291a0cd TT |
10678 | } |
10679 | ||
d721ba37 PA |
10680 | if (res.name == NULL) |
10681 | res.name = "<unknown>"; | |
10682 | ||
10683 | return res; | |
9291a0cd TT |
10684 | } |
10685 | ||
f4dc4d17 DE |
10686 | /* Handle DW_AT_stmt_list for a compilation unit. |
10687 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
10688 | COMP_DIR is the compilation directory. LOWPC is passed to |
10689 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
10690 | |
10691 | static void | |
10692 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 10693 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 10694 | { |
518817b3 SM |
10695 | struct dwarf2_per_objfile *dwarf2_per_objfile |
10696 | = cu->per_cu->dwarf2_per_objfile; | |
2ab95328 | 10697 | struct attribute *attr; |
527f3840 JK |
10698 | struct line_header line_header_local; |
10699 | hashval_t line_header_local_hash; | |
527f3840 JK |
10700 | void **slot; |
10701 | int decode_mapping; | |
2ab95328 | 10702 | |
f4dc4d17 DE |
10703 | gdb_assert (! cu->per_cu->is_debug_types); |
10704 | ||
2ab95328 | 10705 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
10706 | if (attr == NULL) |
10707 | return; | |
10708 | ||
9c541725 | 10709 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
10710 | |
10711 | /* The line header hash table is only created if needed (it exists to | |
10712 | prevent redundant reading of the line table for partial_units). | |
10713 | If we're given a partial_unit, we'll need it. If we're given a | |
10714 | compile_unit, then use the line header hash table if it's already | |
10715 | created, but don't create one just yet. */ | |
10716 | ||
10717 | if (dwarf2_per_objfile->line_header_hash == NULL | |
10718 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 10719 | { |
527f3840 | 10720 | dwarf2_per_objfile->line_header_hash |
d15acc42 TT |
10721 | .reset (htab_create_alloc (127, line_header_hash_voidp, |
10722 | line_header_eq_voidp, | |
10723 | free_line_header_voidp, | |
10724 | xcalloc, xfree)); | |
527f3840 | 10725 | } |
2ab95328 | 10726 | |
9c541725 | 10727 | line_header_local.sect_off = line_offset; |
527f3840 JK |
10728 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
10729 | line_header_local_hash = line_header_hash (&line_header_local); | |
10730 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
10731 | { | |
d15acc42 | 10732 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash.get (), |
527f3840 JK |
10733 | &line_header_local, |
10734 | line_header_local_hash, NO_INSERT); | |
10735 | ||
10736 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
10737 | is not present in *SLOT (since if there is something in *SLOT then | |
10738 | it will be for a partial_unit). */ | |
10739 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 10740 | { |
527f3840 | 10741 | gdb_assert (*slot != NULL); |
9a3c8263 | 10742 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 10743 | return; |
dee91e82 | 10744 | } |
2ab95328 | 10745 | } |
527f3840 JK |
10746 | |
10747 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
10748 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
10749 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
10750 | if (lh == NULL) | |
527f3840 | 10751 | return; |
4c8aa72d PA |
10752 | |
10753 | cu->line_header = lh.release (); | |
10754 | cu->line_header_die_owner = die; | |
527f3840 JK |
10755 | |
10756 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
10757 | slot = NULL; | |
10758 | else | |
10759 | { | |
d15acc42 | 10760 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash.get (), |
527f3840 JK |
10761 | &line_header_local, |
10762 | line_header_local_hash, INSERT); | |
10763 | gdb_assert (slot != NULL); | |
10764 | } | |
10765 | if (slot != NULL && *slot == NULL) | |
10766 | { | |
10767 | /* This newly decoded line number information unit will be owned | |
10768 | by line_header_hash hash table. */ | |
10769 | *slot = cu->line_header; | |
4c8aa72d | 10770 | cu->line_header_die_owner = NULL; |
527f3840 JK |
10771 | } |
10772 | else | |
10773 | { | |
10774 | /* We cannot free any current entry in (*slot) as that struct line_header | |
10775 | may be already used by multiple CUs. Create only temporary decoded | |
10776 | line_header for this CU - it may happen at most once for each line | |
10777 | number information unit. And if we're not using line_header_hash | |
10778 | then this is what we want as well. */ | |
10779 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
10780 | } |
10781 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
10782 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
10783 | decode_mapping); | |
fff8551c | 10784 | |
2ab95328 TT |
10785 | } |
10786 | ||
95554aad | 10787 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 10788 | |
c906108c | 10789 | static void |
e7c27a73 | 10790 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10791 | { |
518817b3 SM |
10792 | struct dwarf2_per_objfile *dwarf2_per_objfile |
10793 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 10794 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 10795 | struct gdbarch *gdbarch = objfile->arch (); |
2acceee2 | 10796 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
10797 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
10798 | struct attribute *attr; | |
c906108c | 10799 | struct die_info *child_die; |
e142c38c | 10800 | CORE_ADDR baseaddr; |
6e70227d | 10801 | |
380618d6 | 10802 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 10803 | baseaddr = objfile->text_section_offset (); |
c906108c | 10804 | |
fae299cd | 10805 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
10806 | |
10807 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
10808 | from finish_block. */ | |
2acceee2 | 10809 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 10810 | lowpc = highpc; |
3e29f34a | 10811 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 10812 | |
d721ba37 | 10813 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 10814 | |
f4b8a18d KW |
10815 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
10816 | standardised yet. As a workaround for the language detection we fall | |
10817 | back to the DW_AT_producer string. */ | |
10818 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
10819 | cu->language = language_opencl; | |
10820 | ||
3019eac3 DE |
10821 | /* Similar hack for Go. */ |
10822 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
10823 | set_cu_language (DW_LANG_Go, cu); | |
10824 | ||
c24bdb02 | 10825 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
10826 | |
10827 | /* Decode line number information if present. We do this before | |
10828 | processing child DIEs, so that the line header table is available | |
10829 | for DW_AT_decl_file. */ | |
d721ba37 | 10830 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
10831 | |
10832 | /* Process all dies in compilation unit. */ | |
10833 | if (die->child != NULL) | |
10834 | { | |
10835 | child_die = die->child; | |
10836 | while (child_die && child_die->tag) | |
10837 | { | |
10838 | process_die (child_die, cu); | |
436c571c | 10839 | child_die = child_die->sibling; |
3019eac3 DE |
10840 | } |
10841 | } | |
10842 | ||
10843 | /* Decode macro information, if present. Dwarf 2 macro information | |
10844 | refers to information in the line number info statement program | |
10845 | header, so we can only read it if we've read the header | |
10846 | successfully. */ | |
0af92d60 JK |
10847 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
10848 | if (attr == NULL) | |
10849 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
10850 | if (attr && cu->line_header) |
10851 | { | |
10852 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 10853 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 10854 | |
43f3e411 | 10855 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
10856 | } |
10857 | else | |
10858 | { | |
10859 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
10860 | if (attr && cu->line_header) | |
10861 | { | |
10862 | unsigned int macro_offset = DW_UNSND (attr); | |
10863 | ||
43f3e411 | 10864 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
10865 | } |
10866 | } | |
3019eac3 DE |
10867 | } |
10868 | ||
c24bdb02 KS |
10869 | void |
10870 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 10871 | { |
f4dc4d17 DE |
10872 | struct type_unit_group *tu_group; |
10873 | int first_time; | |
3019eac3 | 10874 | struct attribute *attr; |
9c541725 | 10875 | unsigned int i; |
0186c6a7 | 10876 | struct signatured_type *sig_type; |
3019eac3 | 10877 | |
f4dc4d17 | 10878 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 10879 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 10880 | |
c24bdb02 | 10881 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 10882 | |
f4dc4d17 | 10883 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 10884 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 10885 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 10886 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 10887 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
10888 | |
10889 | /* If we've already processed this stmt_list there's no real need to | |
10890 | do it again, we could fake it and just recreate the part we need | |
10891 | (file name,index -> symtab mapping). If data shows this optimization | |
10892 | is useful we can do it then. */ | |
43f3e411 | 10893 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
10894 | |
10895 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
10896 | debug info. */ | |
fff8551c | 10897 | line_header_up lh; |
f4dc4d17 | 10898 | if (attr != NULL) |
3019eac3 | 10899 | { |
9c541725 | 10900 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
c24bdb02 | 10901 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
10902 | } |
10903 | if (lh == NULL) | |
10904 | { | |
10905 | if (first_time) | |
c24bdb02 | 10906 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
10907 | else |
10908 | { | |
10909 | gdb_assert (tu_group->symtabs == NULL); | |
c24bdb02 | 10910 | gdb_assert (m_builder == nullptr); |
804d2729 | 10911 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
10912 | m_builder.reset (new struct buildsym_compunit |
10913 | (COMPUNIT_OBJFILE (cust), "", | |
10914 | COMPUNIT_DIRNAME (cust), | |
10915 | compunit_language (cust), | |
10916 | 0, cust)); | |
f4dc4d17 | 10917 | } |
f4dc4d17 | 10918 | return; |
3019eac3 DE |
10919 | } |
10920 | ||
c24bdb02 KS |
10921 | line_header = lh.release (); |
10922 | line_header_die_owner = die; | |
3019eac3 | 10923 | |
f4dc4d17 DE |
10924 | if (first_time) |
10925 | { | |
c24bdb02 | 10926 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 10927 | |
1fd60fc0 DE |
10928 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
10929 | still initializing it, and our caller (a few levels up) | |
10930 | process_full_type_unit still needs to know if this is the first | |
10931 | time. */ | |
10932 | ||
4ac93832 TT |
10933 | tu_group->symtabs |
10934 | = XOBNEWVEC (&COMPUNIT_OBJFILE (cust)->objfile_obstack, | |
10935 | struct symtab *, line_header->file_names_size ()); | |
3019eac3 | 10936 | |
7ba99d21 AT |
10937 | auto &file_names = line_header->file_names (); |
10938 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 10939 | { |
7ba99d21 | 10940 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
10941 | dwarf2_start_subfile (this, fe.name, |
10942 | fe.include_dir (line_header)); | |
10943 | buildsym_compunit *b = get_builder (); | |
10944 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 10945 | { |
4c8aa72d PA |
10946 | /* NOTE: start_subfile will recognize when it's been |
10947 | passed a file it has already seen. So we can't | |
10948 | assume there's a simple mapping from | |
10949 | cu->line_header->file_names to subfiles, plus | |
10950 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
10951 | b->get_current_subfile ()->symtab |
10952 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
10953 | } |
10954 | ||
c24bdb02 | 10955 | fe.symtab = b->get_current_subfile ()->symtab; |
8c43009f | 10956 | tu_group->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
10957 | } |
10958 | } | |
10959 | else | |
3019eac3 | 10960 | { |
c24bdb02 | 10961 | gdb_assert (m_builder == nullptr); |
804d2729 | 10962 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
10963 | m_builder.reset (new struct buildsym_compunit |
10964 | (COMPUNIT_OBJFILE (cust), "", | |
10965 | COMPUNIT_DIRNAME (cust), | |
10966 | compunit_language (cust), | |
10967 | 0, cust)); | |
f4dc4d17 | 10968 | |
7ba99d21 AT |
10969 | auto &file_names = line_header->file_names (); |
10970 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 10971 | { |
7ba99d21 | 10972 | file_entry &fe = file_names[i]; |
4c8aa72d | 10973 | fe.symtab = tu_group->symtabs[i]; |
f4dc4d17 | 10974 | } |
3019eac3 DE |
10975 | } |
10976 | ||
f4dc4d17 DE |
10977 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
10978 | so they don't have a "real" (so to speak) symtab anyway. | |
10979 | There is later code that will assign the main symtab to all symbols | |
10980 | that don't have one. We need to handle the case of a symbol with a | |
10981 | missing symtab (DW_AT_decl_file) anyway. */ | |
10982 | } | |
3019eac3 | 10983 | |
f4dc4d17 DE |
10984 | /* Process DW_TAG_type_unit. |
10985 | For TUs we want to skip the first top level sibling if it's not the | |
10986 | actual type being defined by this TU. In this case the first top | |
10987 | level sibling is there to provide context only. */ | |
3019eac3 | 10988 | |
f4dc4d17 DE |
10989 | static void |
10990 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
10991 | { | |
10992 | struct die_info *child_die; | |
3019eac3 | 10993 | |
f4dc4d17 DE |
10994 | prepare_one_comp_unit (cu, die, language_minimal); |
10995 | ||
10996 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
10997 | We do this before processing child DIEs, so that the line header table | |
10998 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 10999 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
11000 | |
11001 | if (die->child != NULL) | |
11002 | { | |
11003 | child_die = die->child; | |
11004 | while (child_die && child_die->tag) | |
11005 | { | |
11006 | process_die (child_die, cu); | |
436c571c | 11007 | child_die = child_die->sibling; |
f4dc4d17 DE |
11008 | } |
11009 | } | |
3019eac3 DE |
11010 | } |
11011 | \f | |
80626a55 DE |
11012 | /* DWO/DWP files. |
11013 | ||
11014 | http://gcc.gnu.org/wiki/DebugFission | |
11015 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11016 | ||
11017 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11018 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11019 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11020 | |
11021 | static hashval_t | |
11022 | hash_dwo_file (const void *item) | |
11023 | { | |
9a3c8263 | 11024 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11025 | hashval_t hash; |
3019eac3 | 11026 | |
a2ce51a0 DE |
11027 | hash = htab_hash_string (dwo_file->dwo_name); |
11028 | if (dwo_file->comp_dir != NULL) | |
11029 | hash += htab_hash_string (dwo_file->comp_dir); | |
11030 | return hash; | |
3019eac3 DE |
11031 | } |
11032 | ||
11033 | static int | |
11034 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11035 | { | |
9a3c8263 SM |
11036 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11037 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11038 | |
a2ce51a0 DE |
11039 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11040 | return 0; | |
11041 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11042 | return lhs->comp_dir == rhs->comp_dir; | |
11043 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11044 | } |
11045 | ||
11046 | /* Allocate a hash table for DWO files. */ | |
11047 | ||
51ac9db5 | 11048 | static htab_up |
298e9637 | 11049 | allocate_dwo_file_hash_table () |
3019eac3 | 11050 | { |
51ac9db5 SM |
11051 | auto delete_dwo_file = [] (void *item) |
11052 | { | |
11053 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
11054 | ||
11055 | delete dwo_file; | |
11056 | }; | |
11057 | ||
bc68fb19 TT |
11058 | return htab_up (htab_create_alloc (41, |
11059 | hash_dwo_file, | |
11060 | eq_dwo_file, | |
11061 | delete_dwo_file, | |
11062 | xcalloc, xfree)); | |
3019eac3 DE |
11063 | } |
11064 | ||
80626a55 DE |
11065 | /* Lookup DWO file DWO_NAME. */ |
11066 | ||
11067 | static void ** | |
ed2dc618 SM |
11068 | lookup_dwo_file_slot (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11069 | const char *dwo_name, | |
11070 | const char *comp_dir) | |
80626a55 DE |
11071 | { |
11072 | struct dwo_file find_entry; | |
11073 | void **slot; | |
11074 | ||
11075 | if (dwarf2_per_objfile->dwo_files == NULL) | |
298e9637 | 11076 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); |
80626a55 | 11077 | |
0ac5b59e DE |
11078 | find_entry.dwo_name = dwo_name; |
11079 | find_entry.comp_dir = comp_dir; | |
51ac9db5 SM |
11080 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files.get (), &find_entry, |
11081 | INSERT); | |
80626a55 DE |
11082 | |
11083 | return slot; | |
11084 | } | |
11085 | ||
3019eac3 DE |
11086 | static hashval_t |
11087 | hash_dwo_unit (const void *item) | |
11088 | { | |
9a3c8263 | 11089 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11090 | |
11091 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11092 | return dwo_unit->signature; | |
11093 | } | |
11094 | ||
11095 | static int | |
11096 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11097 | { | |
9a3c8263 SM |
11098 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11099 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11100 | |
11101 | /* The signature is assumed to be unique within the DWO file. | |
11102 | So while object file CU dwo_id's always have the value zero, | |
11103 | that's OK, assuming each object file DWO file has only one CU, | |
11104 | and that's the rule for now. */ | |
11105 | return lhs->signature == rhs->signature; | |
11106 | } | |
11107 | ||
11108 | /* Allocate a hash table for DWO CUs,TUs. | |
11109 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11110 | ||
b0b6a987 | 11111 | static htab_up |
298e9637 | 11112 | allocate_dwo_unit_table () |
3019eac3 DE |
11113 | { |
11114 | /* Start out with a pretty small number. | |
11115 | Generally DWO files contain only one CU and maybe some TUs. */ | |
b0b6a987 TT |
11116 | return htab_up (htab_create_alloc (3, |
11117 | hash_dwo_unit, | |
11118 | eq_dwo_unit, | |
11119 | NULL, xcalloc, xfree)); | |
3019eac3 DE |
11120 | } |
11121 | ||
19c3d4c9 | 11122 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11123 | |
11124 | static void | |
19c3d4c9 DE |
11125 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11126 | const gdb_byte *info_ptr, | |
11127 | struct die_info *comp_unit_die, | |
c0ab21c2 TT |
11128 | struct dwo_file *dwo_file, |
11129 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11130 | { |
11131 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11132 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11133 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11134 | |
a084a2a6 AT |
11135 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11136 | if (!signature.has_value ()) | |
3019eac3 | 11137 | { |
b98664d3 | 11138 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11139 | " its dwo_id [in module %s]"), |
9d8780f0 | 11140 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11141 | return; |
11142 | } | |
11143 | ||
3019eac3 | 11144 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11145 | dwo_unit->signature = *signature; |
8a0459fd | 11146 | dwo_unit->section = section; |
9c541725 | 11147 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11148 | dwo_unit->length = cu->per_cu->length; |
11149 | ||
b4f54984 | 11150 | if (dwarf_read_debug) |
9d8780f0 SM |
11151 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11152 | sect_offset_str (sect_off), | |
9c541725 | 11153 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11154 | } |
11155 | ||
33c5cd75 | 11156 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11157 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11158 | |
33c5cd75 | 11159 | static void |
ed2dc618 | 11160 | create_cus_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e | 11161 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
b0b6a987 | 11162 | dwarf2_section_info §ion, htab_up &cus_htab) |
3019eac3 DE |
11163 | { |
11164 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
d521ce57 | 11165 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11166 | |
96b79293 | 11167 | section.read (objfile); |
33c5cd75 | 11168 | info_ptr = section.buffer; |
3019eac3 DE |
11169 | |
11170 | if (info_ptr == NULL) | |
33c5cd75 | 11171 | return; |
3019eac3 | 11172 | |
b4f54984 | 11173 | if (dwarf_read_debug) |
19c3d4c9 DE |
11174 | { |
11175 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
96b79293 TT |
11176 | section.get_name (), |
11177 | section.get_file_name ()); | |
19c3d4c9 | 11178 | } |
3019eac3 | 11179 | |
33c5cd75 | 11180 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11181 | while (info_ptr < end_ptr) |
11182 | { | |
11183 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11184 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11185 | struct dwo_unit *dwo_unit; |
11186 | void **slot; | |
11187 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11188 | |
11189 | memset (&per_cu, 0, sizeof (per_cu)); | |
e3b94546 | 11190 | per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
3019eac3 | 11191 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11192 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11193 | per_cu.section = §ion; | |
11194 | ||
c0ab21c2 TT |
11195 | cutu_reader reader (&per_cu, cu, &dwo_file); |
11196 | if (!reader.dummy_p) | |
11197 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3e225074 | 11198 | &dwo_file, &read_unit); |
33c5cd75 DB |
11199 | info_ptr += per_cu.length; |
11200 | ||
11201 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11202 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11203 | continue; |
3019eac3 | 11204 | |
33c5cd75 | 11205 | if (cus_htab == NULL) |
298e9637 | 11206 | cus_htab = allocate_dwo_unit_table (); |
19c3d4c9 | 11207 | |
33c5cd75 | 11208 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); |
c0ab21c2 | 11209 | *dwo_unit = read_unit; |
b0b6a987 | 11210 | slot = htab_find_slot (cus_htab.get (), dwo_unit, INSERT); |
33c5cd75 DB |
11211 | gdb_assert (slot != NULL); |
11212 | if (*slot != NULL) | |
19c3d4c9 | 11213 | { |
33c5cd75 DB |
11214 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11215 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11216 | |
b98664d3 | 11217 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11218 | " the entry at offset %s, signature %s"), |
11219 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11220 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11221 | } |
33c5cd75 | 11222 | *slot = (void *)dwo_unit; |
3019eac3 | 11223 | } |
3019eac3 DE |
11224 | } |
11225 | ||
80626a55 DE |
11226 | /* DWP file .debug_{cu,tu}_index section format: |
11227 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
11228 | ||
d2415c6c DE |
11229 | DWP Version 1: |
11230 | ||
80626a55 DE |
11231 | Both index sections have the same format, and serve to map a 64-bit |
11232 | signature to a set of section numbers. Each section begins with a header, | |
11233 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11234 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11235 | aligned at 8-byte boundaries in the file. | |
11236 | ||
d2415c6c DE |
11237 | The index section header consists of: |
11238 | ||
11239 | V, 32 bit version number | |
11240 | -, 32 bits unused | |
11241 | N, 32 bit number of compilation units or type units in the index | |
11242 | M, 32 bit number of slots in the hash table | |
80626a55 | 11243 | |
d2415c6c | 11244 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11245 | |
d2415c6c DE |
11246 | The hash table begins at offset 16 in the section, and consists of an array |
11247 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11248 | order of the application binary). Unused slots in the hash table are 0. | |
11249 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11250 | |
d2415c6c DE |
11251 | The parallel table begins immediately after the hash table |
11252 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11253 | array of 32-bit indexes (using the byte order of the application binary), | |
11254 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11255 | table contains a 32-bit index into the pool of section numbers. For unused | |
11256 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11257 | |
73869dc2 DE |
11258 | The pool of section numbers begins immediately following the hash table |
11259 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11260 | section numbers consists of an array of 32-bit words (using the byte order | |
11261 | of the application binary). Each item in the array is indexed starting | |
11262 | from 0. The hash table entry provides the index of the first section | |
11263 | number in the set. Additional section numbers in the set follow, and the | |
11264 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11265 | ||
11266 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11267 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11268 | be the second entry. Other members of the set may follow in any order. | |
11269 | ||
11270 | --- | |
11271 | ||
11272 | DWP Version 2: | |
11273 | ||
11274 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
11275 | and the entries in the index tables are now offsets into these sections. | |
11276 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11277 | section. | |
11278 | ||
11279 | Index Section Contents: | |
11280 | Header | |
11281 | Hash Table of Signatures dwp_hash_table.hash_table | |
11282 | Parallel Table of Indices dwp_hash_table.unit_table | |
11283 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
11284 | Table of Section Sizes dwp_hash_table.v2.sizes | |
11285 | ||
11286 | The index section header consists of: | |
11287 | ||
11288 | V, 32 bit version number | |
11289 | L, 32 bit number of columns in the table of section offsets | |
11290 | N, 32 bit number of compilation units or type units in the index | |
11291 | M, 32 bit number of slots in the hash table | |
11292 | ||
11293 | Numbers are recorded using the byte order of the application binary. | |
11294 | ||
11295 | The hash table has the same format as version 1. | |
11296 | The parallel table of indices has the same format as version 1, | |
11297 | except that the entries are origin-1 indices into the table of sections | |
11298 | offsets and the table of section sizes. | |
11299 | ||
11300 | The table of offsets begins immediately following the parallel table | |
11301 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11302 | a two-dimensional array of 32-bit words (using the byte order of the | |
11303 | application binary), with L columns and N+1 rows, in row-major order. | |
11304 | Each row in the array is indexed starting from 0. The first row provides | |
11305 | a key to the remaining rows: each column in this row provides an identifier | |
11306 | for a debug section, and the offsets in the same column of subsequent rows | |
11307 | refer to that section. The section identifiers are: | |
11308 | ||
11309 | DW_SECT_INFO 1 .debug_info.dwo | |
11310 | DW_SECT_TYPES 2 .debug_types.dwo | |
11311 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11312 | DW_SECT_LINE 4 .debug_line.dwo | |
11313 | DW_SECT_LOC 5 .debug_loc.dwo | |
11314 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11315 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11316 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11317 | ||
11318 | The offsets provided by the CU and TU index sections are the base offsets | |
11319 | for the contributions made by each CU or TU to the corresponding section | |
11320 | in the package file. Each CU and TU header contains an abbrev_offset | |
11321 | field, used to find the abbreviations table for that CU or TU within the | |
11322 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11323 | be interpreted as relative to the base offset given in the index section. | |
11324 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11325 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11326 | and offsets into other debug sections obtained from DWARF attributes should | |
11327 | also be interpreted as relative to the corresponding base offset. | |
11328 | ||
11329 | The table of sizes begins immediately following the table of offsets. | |
11330 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11331 | with L columns and N rows, in row-major order. Each row in the array is | |
11332 | indexed starting from 1 (row 0 is shared by the two tables). | |
11333 | ||
11334 | --- | |
11335 | ||
11336 | Hash table lookup is handled the same in version 1 and 2: | |
11337 | ||
11338 | We assume that N and M will not exceed 2^32 - 1. | |
11339 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11340 | ||
d2415c6c DE |
11341 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11342 | in the hash table is located as follows: | |
80626a55 | 11343 | |
d2415c6c DE |
11344 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11345 | the low-order k bits all set to 1. | |
80626a55 | 11346 | |
d2415c6c | 11347 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11348 | |
d2415c6c DE |
11349 | 3) If the hash table entry at index H matches the signature, use that |
11350 | entry. If the hash table entry at index H is unused (all zeroes), | |
11351 | terminate the search: the signature is not present in the table. | |
80626a55 | 11352 | |
d2415c6c | 11353 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11354 | |
d2415c6c | 11355 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11356 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11357 | |
11358 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11359 | .debug_{info,types}.dwo in DWP_FILE. | |
11360 | Returns NULL if there isn't one. | |
11361 | Note: This function processes DWP files only, not DWO files. */ | |
11362 | ||
11363 | static struct dwp_hash_table * | |
ed2dc618 SM |
11364 | create_dwp_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11365 | struct dwp_file *dwp_file, int is_debug_types) | |
80626a55 DE |
11366 | { |
11367 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
400174b1 | 11368 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11369 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11370 | struct dwarf2_section_info *index; |
73869dc2 | 11371 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11372 | struct dwp_hash_table *htab; |
11373 | ||
11374 | if (is_debug_types) | |
11375 | index = &dwp_file->sections.tu_index; | |
11376 | else | |
11377 | index = &dwp_file->sections.cu_index; | |
11378 | ||
96b79293 | 11379 | if (index->empty ()) |
80626a55 | 11380 | return NULL; |
96b79293 | 11381 | index->read (objfile); |
80626a55 DE |
11382 | |
11383 | index_ptr = index->buffer; | |
11384 | index_end = index_ptr + index->size; | |
11385 | ||
11386 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
11387 | index_ptr += 4; |
11388 | if (version == 2) | |
11389 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
11390 | else | |
11391 | nr_columns = 0; | |
11392 | index_ptr += 4; | |
80626a55 DE |
11393 | nr_units = read_4_bytes (dbfd, index_ptr); |
11394 | index_ptr += 4; | |
11395 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11396 | index_ptr += 4; | |
11397 | ||
73869dc2 | 11398 | if (version != 1 && version != 2) |
80626a55 | 11399 | { |
21aa081e | 11400 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11401 | " [in module %s]"), |
21aa081e | 11402 | pulongest (version), dwp_file->name); |
80626a55 DE |
11403 | } |
11404 | if (nr_slots != (nr_slots & -nr_slots)) | |
11405 | { | |
21aa081e | 11406 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11407 | " is not power of 2 [in module %s]"), |
21aa081e | 11408 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11409 | } |
11410 | ||
11411 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
11412 | htab->version = version; |
11413 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11414 | htab->nr_units = nr_units; |
11415 | htab->nr_slots = nr_slots; | |
11416 | htab->hash_table = index_ptr; | |
11417 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11418 | |
11419 | /* Exit early if the table is empty. */ | |
11420 | if (nr_slots == 0 || nr_units == 0 | |
11421 | || (version == 2 && nr_columns == 0)) | |
11422 | { | |
11423 | /* All must be zero. */ | |
11424 | if (nr_slots != 0 || nr_units != 0 | |
11425 | || (version == 2 && nr_columns != 0)) | |
11426 | { | |
b98664d3 | 11427 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11428 | " all zero [in modules %s]"), |
11429 | dwp_file->name); | |
11430 | } | |
11431 | return htab; | |
11432 | } | |
11433 | ||
11434 | if (version == 1) | |
11435 | { | |
11436 | htab->section_pool.v1.indices = | |
11437 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11438 | /* It's harder to decide whether the section is too small in v1. | |
11439 | V1 is deprecated anyway so we punt. */ | |
11440 | } | |
11441 | else | |
11442 | { | |
11443 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11444 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11445 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11446 | /* Reverse map for error checking. */ |
11447 | int ids_seen[DW_SECT_MAX + 1]; | |
11448 | int i; | |
11449 | ||
11450 | if (nr_columns < 2) | |
11451 | { | |
11452 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11453 | " in section table [in module %s]"), | |
11454 | dwp_file->name); | |
11455 | } | |
11456 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11457 | { | |
11458 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11459 | " in section table [in module %s]"), | |
11460 | dwp_file->name); | |
11461 | } | |
04fd5eed GB |
11462 | memset (ids, 255, sizeof_ids); |
11463 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11464 | for (i = 0; i < nr_columns; ++i) |
11465 | { | |
11466 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11467 | ||
11468 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11469 | { | |
11470 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11471 | " in section table [in module %s]"), | |
11472 | id, dwp_file->name); | |
11473 | } | |
11474 | if (ids_seen[id] != -1) | |
11475 | { | |
11476 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11477 | " id %d in section table [in module %s]"), | |
11478 | id, dwp_file->name); | |
11479 | } | |
11480 | ids_seen[id] = i; | |
11481 | ids[i] = id; | |
11482 | } | |
11483 | /* Must have exactly one info or types section. */ | |
11484 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11485 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11486 | != 1) | |
11487 | { | |
11488 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11489 | " DWO info/types section [in module %s]"), | |
11490 | dwp_file->name); | |
11491 | } | |
11492 | /* Must have an abbrev section. */ | |
11493 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
11494 | { | |
11495 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11496 | " section [in module %s]"), | |
11497 | dwp_file->name); | |
11498 | } | |
11499 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11500 | htab->section_pool.v2.sizes = | |
11501 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
11502 | * nr_units * nr_columns); | |
11503 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
11504 | * nr_units * nr_columns)) | |
11505 | > index_end) | |
11506 | { | |
11507 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11508 | " [in module %s]"), | |
11509 | dwp_file->name); | |
11510 | } | |
11511 | } | |
80626a55 DE |
11512 | |
11513 | return htab; | |
11514 | } | |
11515 | ||
11516 | /* Update SECTIONS with the data from SECTP. | |
11517 | ||
11518 | This function is like the other "locate" section routines that are | |
11519 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 11520 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
11521 | |
11522 | The result is non-zero for success, or zero if an error was found. */ | |
11523 | ||
11524 | static int | |
73869dc2 DE |
11525 | locate_v1_virtual_dwo_sections (asection *sectp, |
11526 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
11527 | { |
11528 | const struct dwop_section_names *names = &dwop_section_names; | |
11529 | ||
11530 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
11531 | { | |
11532 | /* There can be only one. */ | |
049412e3 | 11533 | if (sections->abbrev.s.section != NULL) |
80626a55 | 11534 | return 0; |
049412e3 | 11535 | sections->abbrev.s.section = sectp; |
fd361982 | 11536 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
11537 | } |
11538 | else if (section_is_p (sectp->name, &names->info_dwo) | |
11539 | || section_is_p (sectp->name, &names->types_dwo)) | |
11540 | { | |
11541 | /* There can be only one. */ | |
049412e3 | 11542 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 11543 | return 0; |
049412e3 | 11544 | sections->info_or_types.s.section = sectp; |
fd361982 | 11545 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 DE |
11546 | } |
11547 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
11548 | { | |
11549 | /* There can be only one. */ | |
049412e3 | 11550 | if (sections->line.s.section != NULL) |
80626a55 | 11551 | return 0; |
049412e3 | 11552 | sections->line.s.section = sectp; |
fd361982 | 11553 | sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
11554 | } |
11555 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
11556 | { | |
11557 | /* There can be only one. */ | |
049412e3 | 11558 | if (sections->loc.s.section != NULL) |
80626a55 | 11559 | return 0; |
049412e3 | 11560 | sections->loc.s.section = sectp; |
fd361982 | 11561 | sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
11562 | } |
11563 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
11564 | { | |
11565 | /* There can be only one. */ | |
049412e3 | 11566 | if (sections->macinfo.s.section != NULL) |
80626a55 | 11567 | return 0; |
049412e3 | 11568 | sections->macinfo.s.section = sectp; |
fd361982 | 11569 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
11570 | } |
11571 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
11572 | { | |
11573 | /* There can be only one. */ | |
049412e3 | 11574 | if (sections->macro.s.section != NULL) |
80626a55 | 11575 | return 0; |
049412e3 | 11576 | sections->macro.s.section = sectp; |
fd361982 | 11577 | sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
11578 | } |
11579 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
11580 | { | |
11581 | /* There can be only one. */ | |
049412e3 | 11582 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 11583 | return 0; |
049412e3 | 11584 | sections->str_offsets.s.section = sectp; |
fd361982 | 11585 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
11586 | } |
11587 | else | |
11588 | { | |
11589 | /* No other kind of section is valid. */ | |
11590 | return 0; | |
11591 | } | |
11592 | ||
11593 | return 1; | |
11594 | } | |
11595 | ||
73869dc2 DE |
11596 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
11597 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11598 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11599 | This is for DWP version 1 files. */ | |
80626a55 DE |
11600 | |
11601 | static struct dwo_unit * | |
ed2dc618 SM |
11602 | create_dwo_unit_in_dwp_v1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11603 | struct dwp_file *dwp_file, | |
73869dc2 DE |
11604 | uint32_t unit_index, |
11605 | const char *comp_dir, | |
11606 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
11607 | { |
11608 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
11609 | const struct dwp_hash_table *dwp_htab = |
11610 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11611 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
11612 | const char *kind = is_debug_types ? "TU" : "CU"; |
11613 | struct dwo_file *dwo_file; | |
11614 | struct dwo_unit *dwo_unit; | |
73869dc2 | 11615 | struct virtual_v1_dwo_sections sections; |
80626a55 | 11616 | void **dwo_file_slot; |
80626a55 DE |
11617 | int i; |
11618 | ||
73869dc2 DE |
11619 | gdb_assert (dwp_file->version == 1); |
11620 | ||
b4f54984 | 11621 | if (dwarf_read_debug) |
80626a55 | 11622 | { |
73869dc2 | 11623 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 11624 | kind, |
73869dc2 | 11625 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
11626 | dwp_file->name); |
11627 | } | |
11628 | ||
19ac8c2e | 11629 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
11630 | Put a limit on the number of sections we look for so that bad data |
11631 | doesn't cause us to loop forever. */ | |
11632 | ||
73869dc2 | 11633 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
11634 | (1 /* .debug_info or .debug_types */ \ |
11635 | + 1 /* .debug_abbrev */ \ | |
11636 | + 1 /* .debug_line */ \ | |
11637 | + 1 /* .debug_loc */ \ | |
11638 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 11639 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
11640 | + 1 /* trailing zero */) |
11641 | ||
11642 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 11643 | |
73869dc2 | 11644 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
11645 | { |
11646 | asection *sectp; | |
11647 | uint32_t section_nr = | |
11648 | read_4_bytes (dbfd, | |
73869dc2 DE |
11649 | dwp_htab->section_pool.v1.indices |
11650 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
11651 | |
11652 | if (section_nr == 0) | |
11653 | break; | |
11654 | if (section_nr >= dwp_file->num_sections) | |
11655 | { | |
11656 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
11657 | " [in module %s]"), | |
11658 | dwp_file->name); | |
11659 | } | |
11660 | ||
11661 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 11662 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
11663 | { |
11664 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
11665 | " [in module %s]"), | |
11666 | dwp_file->name); | |
11667 | } | |
11668 | } | |
11669 | ||
11670 | if (i < 2 | |
96b79293 TT |
11671 | || sections.info_or_types.empty () |
11672 | || sections.abbrev.empty ()) | |
80626a55 DE |
11673 | { |
11674 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
11675 | " [in module %s]"), | |
11676 | dwp_file->name); | |
11677 | } | |
73869dc2 | 11678 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
11679 | { |
11680 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
11681 | " [in module %s]"), | |
11682 | dwp_file->name); | |
11683 | } | |
11684 | ||
11685 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
11686 | have dwo_unit "live" in that. At least for now. | |
11687 | ||
11688 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 11689 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
11690 | file, we can combine them back into a virtual DWO file to save space |
11691 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
11692 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
11693 | ||
791afaa2 TT |
11694 | std::string virtual_dwo_name = |
11695 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
11696 | sections.abbrev.get_id (), |
11697 | sections.line.get_id (), | |
11698 | sections.loc.get_id (), | |
11699 | sections.str_offsets.get_id ()); | |
80626a55 | 11700 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
11701 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
11702 | virtual_dwo_name.c_str (), | |
11703 | comp_dir); | |
80626a55 DE |
11704 | /* Create one if necessary. */ |
11705 | if (*dwo_file_slot == NULL) | |
11706 | { | |
b4f54984 | 11707 | if (dwarf_read_debug) |
80626a55 DE |
11708 | { |
11709 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 11710 | virtual_dwo_name.c_str ()); |
80626a55 | 11711 | } |
51ac9db5 | 11712 | dwo_file = new struct dwo_file; |
be1e3d3e | 11713 | dwo_file->dwo_name = objfile->intern (virtual_dwo_name); |
0ac5b59e | 11714 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
11715 | dwo_file->sections.abbrev = sections.abbrev; |
11716 | dwo_file->sections.line = sections.line; | |
11717 | dwo_file->sections.loc = sections.loc; | |
11718 | dwo_file->sections.macinfo = sections.macinfo; | |
11719 | dwo_file->sections.macro = sections.macro; | |
11720 | dwo_file->sections.str_offsets = sections.str_offsets; | |
11721 | /* The "str" section is global to the entire DWP file. */ | |
11722 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 11723 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
11724 | there's no need to record it in dwo_file. |
11725 | Also, we can't simply record type sections in dwo_file because | |
11726 | we record a pointer into the vector in dwo_unit. As we collect more | |
11727 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
11728 | for it, invalidating all copies of pointers into the previous |
11729 | contents. */ | |
80626a55 DE |
11730 | *dwo_file_slot = dwo_file; |
11731 | } | |
11732 | else | |
11733 | { | |
b4f54984 | 11734 | if (dwarf_read_debug) |
80626a55 DE |
11735 | { |
11736 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 11737 | virtual_dwo_name.c_str ()); |
80626a55 | 11738 | } |
9a3c8263 | 11739 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 11740 | } |
80626a55 DE |
11741 | |
11742 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
11743 | dwo_unit->dwo_file = dwo_file; | |
11744 | dwo_unit->signature = signature; | |
8d749320 SM |
11745 | dwo_unit->section = |
11746 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
8a0459fd | 11747 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 11748 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
11749 | |
11750 | return dwo_unit; | |
11751 | } | |
11752 | ||
73869dc2 DE |
11753 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
11754 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
11755 | piece within that section used by a TU/CU, return a virtual section | |
11756 | of just that piece. */ | |
11757 | ||
11758 | static struct dwarf2_section_info | |
ed2dc618 SM |
11759 | create_dwp_v2_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11760 | struct dwarf2_section_info *section, | |
73869dc2 DE |
11761 | bfd_size_type offset, bfd_size_type size) |
11762 | { | |
11763 | struct dwarf2_section_info result; | |
11764 | asection *sectp; | |
11765 | ||
11766 | gdb_assert (section != NULL); | |
11767 | gdb_assert (!section->is_virtual); | |
11768 | ||
11769 | memset (&result, 0, sizeof (result)); | |
11770 | result.s.containing_section = section; | |
dc4ccb6f | 11771 | result.is_virtual = true; |
73869dc2 DE |
11772 | |
11773 | if (size == 0) | |
11774 | return result; | |
11775 | ||
96b79293 | 11776 | sectp = section->get_bfd_section (); |
73869dc2 DE |
11777 | |
11778 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
11779 | bounds of the real section. This is a pretty-rare event, so just | |
11780 | flag an error (easier) instead of a warning and trying to cope. */ | |
11781 | if (sectp == NULL | |
fd361982 | 11782 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 11783 | { |
73869dc2 DE |
11784 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
11785 | " in section %s [in module %s]"), | |
fd361982 | 11786 | sectp ? bfd_section_name (sectp) : "<unknown>", |
73869dc2 DE |
11787 | objfile_name (dwarf2_per_objfile->objfile)); |
11788 | } | |
11789 | ||
11790 | result.virtual_offset = offset; | |
11791 | result.size = size; | |
11792 | return result; | |
11793 | } | |
11794 | ||
11795 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
11796 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11797 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11798 | This is for DWP version 2 files. */ | |
11799 | ||
11800 | static struct dwo_unit * | |
ed2dc618 SM |
11801 | create_dwo_unit_in_dwp_v2 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11802 | struct dwp_file *dwp_file, | |
73869dc2 DE |
11803 | uint32_t unit_index, |
11804 | const char *comp_dir, | |
11805 | ULONGEST signature, int is_debug_types) | |
11806 | { | |
11807 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
11808 | const struct dwp_hash_table *dwp_htab = | |
11809 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11810 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
11811 | const char *kind = is_debug_types ? "TU" : "CU"; |
11812 | struct dwo_file *dwo_file; | |
11813 | struct dwo_unit *dwo_unit; | |
11814 | struct virtual_v2_dwo_sections sections; | |
11815 | void **dwo_file_slot; | |
73869dc2 DE |
11816 | int i; |
11817 | ||
11818 | gdb_assert (dwp_file->version == 2); | |
11819 | ||
b4f54984 | 11820 | if (dwarf_read_debug) |
73869dc2 DE |
11821 | { |
11822 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
11823 | kind, | |
11824 | pulongest (unit_index), hex_string (signature), | |
11825 | dwp_file->name); | |
11826 | } | |
11827 | ||
11828 | /* Fetch the section offsets of this DWO unit. */ | |
11829 | ||
11830 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
11831 | |
11832 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
11833 | { | |
11834 | uint32_t offset = read_4_bytes (dbfd, | |
11835 | dwp_htab->section_pool.v2.offsets | |
11836 | + (((unit_index - 1) * dwp_htab->nr_columns | |
11837 | + i) | |
11838 | * sizeof (uint32_t))); | |
11839 | uint32_t size = read_4_bytes (dbfd, | |
11840 | dwp_htab->section_pool.v2.sizes | |
11841 | + (((unit_index - 1) * dwp_htab->nr_columns | |
11842 | + i) | |
11843 | * sizeof (uint32_t))); | |
11844 | ||
11845 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
11846 | { | |
11847 | case DW_SECT_INFO: | |
11848 | case DW_SECT_TYPES: | |
11849 | sections.info_or_types_offset = offset; | |
11850 | sections.info_or_types_size = size; | |
11851 | break; | |
11852 | case DW_SECT_ABBREV: | |
11853 | sections.abbrev_offset = offset; | |
11854 | sections.abbrev_size = size; | |
11855 | break; | |
11856 | case DW_SECT_LINE: | |
11857 | sections.line_offset = offset; | |
11858 | sections.line_size = size; | |
11859 | break; | |
11860 | case DW_SECT_LOC: | |
11861 | sections.loc_offset = offset; | |
11862 | sections.loc_size = size; | |
11863 | break; | |
11864 | case DW_SECT_STR_OFFSETS: | |
11865 | sections.str_offsets_offset = offset; | |
11866 | sections.str_offsets_size = size; | |
11867 | break; | |
11868 | case DW_SECT_MACINFO: | |
11869 | sections.macinfo_offset = offset; | |
11870 | sections.macinfo_size = size; | |
11871 | break; | |
11872 | case DW_SECT_MACRO: | |
11873 | sections.macro_offset = offset; | |
11874 | sections.macro_size = size; | |
11875 | break; | |
11876 | } | |
11877 | } | |
11878 | ||
11879 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
11880 | have dwo_unit "live" in that. At least for now. | |
11881 | ||
11882 | The DWP file can be made up of a random collection of CUs and TUs. | |
11883 | However, for each CU + set of TUs that came from the same original DWO | |
11884 | file, we can combine them back into a virtual DWO file to save space | |
11885 | (fewer struct dwo_file objects to allocate). Remember that for really | |
11886 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
11887 | ||
791afaa2 TT |
11888 | std::string virtual_dwo_name = |
11889 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
11890 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
11891 | (long) (sections.line_size ? sections.line_offset : 0), | |
11892 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
11893 | (long) (sections.str_offsets_size | |
11894 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 11895 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
11896 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
11897 | virtual_dwo_name.c_str (), | |
11898 | comp_dir); | |
73869dc2 DE |
11899 | /* Create one if necessary. */ |
11900 | if (*dwo_file_slot == NULL) | |
11901 | { | |
b4f54984 | 11902 | if (dwarf_read_debug) |
73869dc2 DE |
11903 | { |
11904 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 11905 | virtual_dwo_name.c_str ()); |
73869dc2 | 11906 | } |
51ac9db5 | 11907 | dwo_file = new struct dwo_file; |
be1e3d3e | 11908 | dwo_file->dwo_name = objfile->intern (virtual_dwo_name); |
73869dc2 DE |
11909 | dwo_file->comp_dir = comp_dir; |
11910 | dwo_file->sections.abbrev = | |
ed2dc618 | 11911 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
11912 | sections.abbrev_offset, sections.abbrev_size); |
11913 | dwo_file->sections.line = | |
ed2dc618 | 11914 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
11915 | sections.line_offset, sections.line_size); |
11916 | dwo_file->sections.loc = | |
ed2dc618 | 11917 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
11918 | sections.loc_offset, sections.loc_size); |
11919 | dwo_file->sections.macinfo = | |
ed2dc618 | 11920 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
11921 | sections.macinfo_offset, sections.macinfo_size); |
11922 | dwo_file->sections.macro = | |
ed2dc618 | 11923 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
11924 | sections.macro_offset, sections.macro_size); |
11925 | dwo_file->sections.str_offsets = | |
ed2dc618 SM |
11926 | create_dwp_v2_section (dwarf2_per_objfile, |
11927 | &dwp_file->sections.str_offsets, | |
73869dc2 DE |
11928 | sections.str_offsets_offset, |
11929 | sections.str_offsets_size); | |
11930 | /* The "str" section is global to the entire DWP file. */ | |
11931 | dwo_file->sections.str = dwp_file->sections.str; | |
11932 | /* The info or types section is assigned below to dwo_unit, | |
11933 | there's no need to record it in dwo_file. | |
11934 | Also, we can't simply record type sections in dwo_file because | |
11935 | we record a pointer into the vector in dwo_unit. As we collect more | |
11936 | types we'll grow the vector and eventually have to reallocate space | |
11937 | for it, invalidating all copies of pointers into the previous | |
11938 | contents. */ | |
11939 | *dwo_file_slot = dwo_file; | |
11940 | } | |
11941 | else | |
11942 | { | |
b4f54984 | 11943 | if (dwarf_read_debug) |
73869dc2 DE |
11944 | { |
11945 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 11946 | virtual_dwo_name.c_str ()); |
73869dc2 | 11947 | } |
9a3c8263 | 11948 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 11949 | } |
73869dc2 DE |
11950 | |
11951 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
11952 | dwo_unit->dwo_file = dwo_file; | |
11953 | dwo_unit->signature = signature; | |
8d749320 SM |
11954 | dwo_unit->section = |
11955 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
ed2dc618 SM |
11956 | *dwo_unit->section = create_dwp_v2_section (dwarf2_per_objfile, |
11957 | is_debug_types | |
73869dc2 DE |
11958 | ? &dwp_file->sections.types |
11959 | : &dwp_file->sections.info, | |
11960 | sections.info_or_types_offset, | |
11961 | sections.info_or_types_size); | |
11962 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
11963 | ||
11964 | return dwo_unit; | |
11965 | } | |
11966 | ||
57d63ce2 DE |
11967 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
11968 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
11969 | |
11970 | static struct dwo_unit * | |
ed2dc618 SM |
11971 | lookup_dwo_unit_in_dwp (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11972 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 11973 | ULONGEST signature, int is_debug_types) |
80626a55 | 11974 | { |
57d63ce2 DE |
11975 | const struct dwp_hash_table *dwp_htab = |
11976 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11977 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 11978 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
11979 | uint32_t hash = signature & mask; |
11980 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
11981 | unsigned int i; | |
11982 | void **slot; | |
870f88f7 | 11983 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
11984 | |
11985 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
11986 | find_dwo_cu.signature = signature; | |
19ac8c2e | 11987 | slot = htab_find_slot (is_debug_types |
48b490f2 TT |
11988 | ? dwp_file->loaded_tus.get () |
11989 | : dwp_file->loaded_cus.get (), | |
19ac8c2e | 11990 | &find_dwo_cu, INSERT); |
80626a55 DE |
11991 | |
11992 | if (*slot != NULL) | |
9a3c8263 | 11993 | return (struct dwo_unit *) *slot; |
80626a55 DE |
11994 | |
11995 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 11996 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
11997 | { |
11998 | ULONGEST signature_in_table; | |
11999 | ||
12000 | signature_in_table = | |
57d63ce2 | 12001 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12002 | if (signature_in_table == signature) |
12003 | { | |
57d63ce2 DE |
12004 | uint32_t unit_index = |
12005 | read_4_bytes (dbfd, | |
12006 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12007 | |
73869dc2 DE |
12008 | if (dwp_file->version == 1) |
12009 | { | |
ed2dc618 SM |
12010 | *slot = create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile, |
12011 | dwp_file, unit_index, | |
73869dc2 DE |
12012 | comp_dir, signature, |
12013 | is_debug_types); | |
12014 | } | |
12015 | else | |
12016 | { | |
ed2dc618 SM |
12017 | *slot = create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile, |
12018 | dwp_file, unit_index, | |
73869dc2 DE |
12019 | comp_dir, signature, |
12020 | is_debug_types); | |
12021 | } | |
9a3c8263 | 12022 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12023 | } |
12024 | if (signature_in_table == 0) | |
12025 | return NULL; | |
12026 | hash = (hash + hash2) & mask; | |
12027 | } | |
12028 | ||
12029 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12030 | " [in module %s]"), | |
12031 | dwp_file->name); | |
12032 | } | |
12033 | ||
ab5088bf | 12034 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12035 | Open the file specified by FILE_NAME and hand it off to BFD for |
12036 | preliminary analysis. Return a newly initialized bfd *, which | |
12037 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12038 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12039 | SEARCH_CWD is true if the current directory is to be searched. |
12040 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12041 | If successful, the file is added to the bfd include table of the |
12042 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12043 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12044 | NOTE: This function is derived from symfile_bfd_open. */ |
12045 | ||
192b62ce | 12046 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12047 | try_open_dwop_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12048 | const char *file_name, int is_dwp, int search_cwd) | |
3019eac3 | 12049 | { |
24b9144d | 12050 | int desc; |
9c02c129 DE |
12051 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12052 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12053 | to debug_file_directory. */ | |
e0cc99a6 | 12054 | const char *search_path; |
9c02c129 DE |
12055 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12056 | ||
e0cc99a6 | 12057 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12058 | if (search_cwd) |
12059 | { | |
12060 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12061 | { |
12062 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12063 | debug_file_directory, | |
12064 | (char *) NULL)); | |
12065 | search_path = search_path_holder.get (); | |
12066 | } | |
6ac97d4c | 12067 | else |
e0cc99a6 | 12068 | search_path = "."; |
6ac97d4c | 12069 | } |
9c02c129 | 12070 | else |
e0cc99a6 | 12071 | search_path = debug_file_directory; |
3019eac3 | 12072 | |
24b9144d | 12073 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12074 | if (is_dwp) |
12075 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12076 | |
12077 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12078 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12079 | O_RDONLY | O_BINARY, &absolute_name); |
12080 | if (desc < 0) | |
12081 | return NULL; | |
12082 | ||
e0cc99a6 TT |
12083 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12084 | gnutarget, desc)); | |
9c02c129 DE |
12085 | if (sym_bfd == NULL) |
12086 | return NULL; | |
192b62ce | 12087 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12088 | |
192b62ce TT |
12089 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12090 | return NULL; | |
3019eac3 | 12091 | |
13aaf454 DE |
12092 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12093 | This is important because things like demangled_names_hash lives in the | |
12094 | objfile's per_bfd space and may have references to things like symbol | |
12095 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 12096 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12097 | |
3019eac3 DE |
12098 | return sym_bfd; |
12099 | } | |
12100 | ||
ab5088bf | 12101 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12102 | COMP_DIR is the DW_AT_comp_dir attribute. |
12103 | The result is the bfd handle of the file. | |
12104 | If there is a problem finding or opening the file, return NULL. | |
12105 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12106 | same as symfile_bfd_open. */ | |
12107 | ||
192b62ce | 12108 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12109 | open_dwo_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12110 | const char *file_name, const char *comp_dir) | |
3019eac3 | 12111 | { |
80626a55 | 12112 | if (IS_ABSOLUTE_PATH (file_name)) |
ed2dc618 SM |
12113 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12114 | 0 /*is_dwp*/, 0 /*search_cwd*/); | |
3019eac3 DE |
12115 | |
12116 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12117 | ||
12118 | if (comp_dir != NULL) | |
12119 | { | |
43816ebc TT |
12120 | gdb::unique_xmalloc_ptr<char> path_to_try |
12121 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12122 | |
12123 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12124 | search path, which seems useful. */ | |
ed2dc618 | 12125 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, |
43816ebc | 12126 | path_to_try.get (), |
ed2dc618 | 12127 | 0 /*is_dwp*/, |
192b62ce | 12128 | 1 /*search_cwd*/)); |
3019eac3 DE |
12129 | if (abfd != NULL) |
12130 | return abfd; | |
12131 | } | |
12132 | ||
12133 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12134 | is a list of paths. */ | |
12135 | ||
12136 | if (*debug_file_directory == '\0') | |
12137 | return NULL; | |
12138 | ||
ed2dc618 SM |
12139 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12140 | 0 /*is_dwp*/, 1 /*search_cwd*/); | |
3019eac3 DE |
12141 | } |
12142 | ||
80626a55 DE |
12143 | /* This function is mapped across the sections and remembers the offset and |
12144 | size of each of the DWO debugging sections we are interested in. */ | |
12145 | ||
12146 | static void | |
12147 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12148 | { | |
9a3c8263 | 12149 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12150 | const struct dwop_section_names *names = &dwop_section_names; |
12151 | ||
12152 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12153 | { | |
049412e3 | 12154 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12155 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12156 | } |
12157 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12158 | { | |
049412e3 | 12159 | dwo_sections->info.s.section = sectp; |
fd361982 | 12160 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 DE |
12161 | } |
12162 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12163 | { | |
049412e3 | 12164 | dwo_sections->line.s.section = sectp; |
fd361982 | 12165 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12166 | } |
12167 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12168 | { | |
049412e3 | 12169 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12170 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 | 12171 | } |
41144253 | 12172 | else if (section_is_p (sectp->name, &names->loclists_dwo)) |
12173 | { | |
12174 | dwo_sections->loclists.s.section = sectp; | |
12175 | dwo_sections->loclists.size = bfd_section_size (sectp); | |
12176 | } | |
80626a55 DE |
12177 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) |
12178 | { | |
049412e3 | 12179 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12180 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12181 | } |
12182 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12183 | { | |
049412e3 | 12184 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12185 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
12186 | } |
12187 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
12188 | { | |
049412e3 | 12189 | dwo_sections->str.s.section = sectp; |
fd361982 | 12190 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 DE |
12191 | } |
12192 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12193 | { | |
049412e3 | 12194 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12195 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12196 | } |
12197 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12198 | { | |
12199 | struct dwarf2_section_info type_section; | |
12200 | ||
12201 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12202 | type_section.s.section = sectp; |
fd361982 | 12203 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12204 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12205 | } |
12206 | } | |
12207 | ||
ab5088bf | 12208 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12209 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12210 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12211 | |
12212 | static struct dwo_file * | |
0ac5b59e DE |
12213 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
12214 | const char *dwo_name, const char *comp_dir) | |
3019eac3 | 12215 | { |
ed2dc618 | 12216 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 12217 | |
fb1eb2f9 | 12218 | gdb_bfd_ref_ptr dbfd = open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12219 | if (dbfd == NULL) |
12220 | { | |
b4f54984 | 12221 | if (dwarf_read_debug) |
80626a55 DE |
12222 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12223 | return NULL; | |
12224 | } | |
263db9a1 | 12225 | |
51ac9db5 | 12226 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12227 | dwo_file->dwo_name = dwo_name; |
12228 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12229 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12230 | |
fb1eb2f9 | 12231 | bfd_map_over_sections (dwo_file->dbfd.get (), dwarf2_locate_dwo_sections, |
192b62ce | 12232 | &dwo_file->sections); |
3019eac3 | 12233 | |
18a8505e AT |
12234 | create_cus_hash_table (dwarf2_per_objfile, per_cu->cu, *dwo_file, |
12235 | dwo_file->sections.info, dwo_file->cus); | |
3019eac3 | 12236 | |
263db9a1 | 12237 | create_debug_types_hash_table (dwarf2_per_objfile, dwo_file.get (), |
ed2dc618 | 12238 | dwo_file->sections.types, dwo_file->tus); |
3019eac3 | 12239 | |
b4f54984 | 12240 | if (dwarf_read_debug) |
80626a55 DE |
12241 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
12242 | ||
263db9a1 | 12243 | return dwo_file.release (); |
3019eac3 DE |
12244 | } |
12245 | ||
80626a55 | 12246 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12247 | size of each of the DWP debugging sections common to version 1 and 2 that |
12248 | we are interested in. */ | |
3019eac3 | 12249 | |
80626a55 | 12250 | static void |
73869dc2 DE |
12251 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
12252 | void *dwp_file_ptr) | |
3019eac3 | 12253 | { |
9a3c8263 | 12254 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
12255 | const struct dwop_section_names *names = &dwop_section_names; |
12256 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12257 | |
80626a55 | 12258 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12259 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12260 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12261 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12262 | |
80626a55 DE |
12263 | /* Look for specific sections that we need. */ |
12264 | if (section_is_p (sectp->name, &names->str_dwo)) | |
12265 | { | |
049412e3 | 12266 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 12267 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 DE |
12268 | } |
12269 | else if (section_is_p (sectp->name, &names->cu_index)) | |
12270 | { | |
049412e3 | 12271 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 12272 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12273 | } |
12274 | else if (section_is_p (sectp->name, &names->tu_index)) | |
12275 | { | |
049412e3 | 12276 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 12277 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12278 | } |
12279 | } | |
3019eac3 | 12280 | |
73869dc2 DE |
12281 | /* This function is mapped across the sections and remembers the offset and |
12282 | size of each of the DWP version 2 debugging sections that we are interested | |
12283 | in. This is split into a separate function because we don't know if we | |
12284 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
12285 | ||
12286 | static void | |
12287 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12288 | { | |
9a3c8263 | 12289 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12290 | const struct dwop_section_names *names = &dwop_section_names; |
12291 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12292 | ||
12293 | /* Record the ELF section number for later lookup: this is what the | |
12294 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12295 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12296 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12297 | ||
12298 | /* Look for specific sections that we need. */ | |
12299 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12300 | { | |
049412e3 | 12301 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 12302 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 DE |
12303 | } |
12304 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12305 | { | |
049412e3 | 12306 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 12307 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 DE |
12308 | } |
12309 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12310 | { | |
049412e3 | 12311 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 12312 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 DE |
12313 | } |
12314 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12315 | { | |
049412e3 | 12316 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 12317 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 DE |
12318 | } |
12319 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12320 | { | |
049412e3 | 12321 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 12322 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 DE |
12323 | } |
12324 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12325 | { | |
049412e3 | 12326 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 12327 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 DE |
12328 | } |
12329 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12330 | { | |
049412e3 | 12331 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 12332 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 DE |
12333 | } |
12334 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12335 | { | |
049412e3 | 12336 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 12337 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
12338 | } |
12339 | } | |
12340 | ||
80626a55 | 12341 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12342 | |
80626a55 DE |
12343 | static hashval_t |
12344 | hash_dwp_loaded_cutus (const void *item) | |
12345 | { | |
9a3c8263 | 12346 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 12347 | |
80626a55 DE |
12348 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
12349 | return dwo_unit->signature; | |
3019eac3 DE |
12350 | } |
12351 | ||
80626a55 | 12352 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12353 | |
80626a55 DE |
12354 | static int |
12355 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 12356 | { |
9a3c8263 SM |
12357 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
12358 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 12359 | |
80626a55 DE |
12360 | return dua->signature == dub->signature; |
12361 | } | |
3019eac3 | 12362 | |
80626a55 | 12363 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12364 | |
48b490f2 | 12365 | static htab_up |
298e9637 | 12366 | allocate_dwp_loaded_cutus_table () |
80626a55 | 12367 | { |
48b490f2 TT |
12368 | return htab_up (htab_create_alloc (3, |
12369 | hash_dwp_loaded_cutus, | |
12370 | eq_dwp_loaded_cutus, | |
12371 | NULL, xcalloc, xfree)); | |
80626a55 | 12372 | } |
3019eac3 | 12373 | |
ab5088bf DE |
12374 | /* Try to open DWP file FILE_NAME. |
12375 | The result is the bfd handle of the file. | |
12376 | If there is a problem finding or opening the file, return NULL. | |
12377 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12378 | same as symfile_bfd_open. */ | |
12379 | ||
192b62ce | 12380 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12381 | open_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12382 | const char *file_name) | |
ab5088bf | 12383 | { |
ed2dc618 SM |
12384 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, file_name, |
12385 | 1 /*is_dwp*/, | |
192b62ce | 12386 | 1 /*search_cwd*/)); |
6ac97d4c DE |
12387 | if (abfd != NULL) |
12388 | return abfd; | |
12389 | ||
12390 | /* Work around upstream bug 15652. | |
12391 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
12392 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
12393 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
12394 | of the executable's path may have discarded the needed info. | |
12395 | [IWBN if the dwp file name was recorded in the executable, akin to | |
12396 | .gnu_debuglink, but that doesn't exist yet.] | |
12397 | Strip the directory from FILE_NAME and search again. */ | |
12398 | if (*debug_file_directory != '\0') | |
12399 | { | |
12400 | /* Don't implicitly search the current directory here. | |
12401 | If the user wants to search "." to handle this case, | |
12402 | it must be added to debug-file-directory. */ | |
ed2dc618 SM |
12403 | return try_open_dwop_file (dwarf2_per_objfile, |
12404 | lbasename (file_name), 1 /*is_dwp*/, | |
6ac97d4c DE |
12405 | 0 /*search_cwd*/); |
12406 | } | |
12407 | ||
12408 | return NULL; | |
ab5088bf DE |
12409 | } |
12410 | ||
80626a55 DE |
12411 | /* Initialize the use of the DWP file for the current objfile. |
12412 | By convention the name of the DWP file is ${objfile}.dwp. | |
12413 | The result is NULL if it can't be found. */ | |
a766d390 | 12414 | |
400174b1 | 12415 | static std::unique_ptr<struct dwp_file> |
ed2dc618 | 12416 | open_and_init_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
80626a55 DE |
12417 | { |
12418 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 | 12419 | |
82bf32bc JK |
12420 | /* Try to find first .dwp for the binary file before any symbolic links |
12421 | resolving. */ | |
6c447423 DE |
12422 | |
12423 | /* If the objfile is a debug file, find the name of the real binary | |
12424 | file and get the name of dwp file from there. */ | |
d721ba37 | 12425 | std::string dwp_name; |
6c447423 DE |
12426 | if (objfile->separate_debug_objfile_backlink != NULL) |
12427 | { | |
12428 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
12429 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 12430 | |
d721ba37 | 12431 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
12432 | } |
12433 | else | |
d721ba37 PA |
12434 | dwp_name = objfile->original_name; |
12435 | ||
12436 | dwp_name += ".dwp"; | |
80626a55 | 12437 | |
ed2dc618 | 12438 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
12439 | if (dbfd == NULL |
12440 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
12441 | { | |
12442 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
12443 | dwp_name = objfile_name (objfile); |
12444 | dwp_name += ".dwp"; | |
ed2dc618 | 12445 | dbfd = open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
12446 | } |
12447 | ||
80626a55 DE |
12448 | if (dbfd == NULL) |
12449 | { | |
b4f54984 | 12450 | if (dwarf_read_debug) |
d721ba37 | 12451 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
400174b1 | 12452 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 12453 | } |
400174b1 TT |
12454 | |
12455 | const char *name = bfd_get_filename (dbfd.get ()); | |
12456 | std::unique_ptr<struct dwp_file> dwp_file | |
12457 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 12458 | |
0a0f4c01 | 12459 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 DE |
12460 | dwp_file->elf_sections = |
12461 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
12462 | dwp_file->num_sections, asection *); | |
12463 | ||
400174b1 TT |
12464 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12465 | dwarf2_locate_common_dwp_sections, | |
12466 | dwp_file.get ()); | |
80626a55 | 12467 | |
400174b1 TT |
12468 | dwp_file->cus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
12469 | 0); | |
80626a55 | 12470 | |
400174b1 TT |
12471 | dwp_file->tus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
12472 | 1); | |
80626a55 | 12473 | |
73869dc2 | 12474 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
12475 | if (dwp_file->cus && dwp_file->tus |
12476 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
12477 | { |
12478 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 12479 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 12480 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
12481 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
12482 | " TU version %s [in DWP file %s]"), | |
12483 | pulongest (dwp_file->cus->version), | |
d721ba37 | 12484 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 12485 | } |
08302ed2 DE |
12486 | |
12487 | if (dwp_file->cus) | |
12488 | dwp_file->version = dwp_file->cus->version; | |
12489 | else if (dwp_file->tus) | |
12490 | dwp_file->version = dwp_file->tus->version; | |
12491 | else | |
12492 | dwp_file->version = 2; | |
73869dc2 DE |
12493 | |
12494 | if (dwp_file->version == 2) | |
400174b1 TT |
12495 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12496 | dwarf2_locate_v2_dwp_sections, | |
12497 | dwp_file.get ()); | |
73869dc2 | 12498 | |
298e9637 SM |
12499 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (); |
12500 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (); | |
80626a55 | 12501 | |
b4f54984 | 12502 | if (dwarf_read_debug) |
80626a55 DE |
12503 | { |
12504 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
12505 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
12506 | " %s CUs, %s TUs\n", |
12507 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
12508 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
12509 | } |
12510 | ||
12511 | return dwp_file; | |
3019eac3 | 12512 | } |
c906108c | 12513 | |
ab5088bf DE |
12514 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
12515 | ||
12516 | static struct dwp_file * | |
ed2dc618 | 12517 | get_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ab5088bf DE |
12518 | { |
12519 | if (! dwarf2_per_objfile->dwp_checked) | |
12520 | { | |
ed2dc618 SM |
12521 | dwarf2_per_objfile->dwp_file |
12522 | = open_and_init_dwp_file (dwarf2_per_objfile); | |
ab5088bf DE |
12523 | dwarf2_per_objfile->dwp_checked = 1; |
12524 | } | |
400174b1 | 12525 | return dwarf2_per_objfile->dwp_file.get (); |
ab5088bf DE |
12526 | } |
12527 | ||
80626a55 DE |
12528 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
12529 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
12530 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 12531 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
12532 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
12533 | ||
12534 | This is called, for example, when wanting to read a variable with a | |
12535 | complex location. Therefore we don't want to do file i/o for every call. | |
12536 | Therefore we don't want to look for a DWO file on every call. | |
12537 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
12538 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
12539 | for a DWO file. | |
12540 | ||
1c658ad5 | 12541 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 12542 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 12543 | |
3019eac3 | 12544 | static struct dwo_unit * |
80626a55 DE |
12545 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
12546 | const char *dwo_name, const char *comp_dir, | |
12547 | ULONGEST signature, int is_debug_types) | |
3019eac3 | 12548 | { |
ed2dc618 | 12549 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_unit->dwarf2_per_objfile; |
3019eac3 | 12550 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 DE |
12551 | const char *kind = is_debug_types ? "TU" : "CU"; |
12552 | void **dwo_file_slot; | |
3019eac3 | 12553 | struct dwo_file *dwo_file; |
80626a55 | 12554 | struct dwp_file *dwp_file; |
cb1df416 | 12555 | |
6a506a2d DE |
12556 | /* First see if there's a DWP file. |
12557 | If we have a DWP file but didn't find the DWO inside it, don't | |
12558 | look for the original DWO file. It makes gdb behave differently | |
12559 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 12560 | |
ed2dc618 | 12561 | dwp_file = get_dwp_file (dwarf2_per_objfile); |
80626a55 | 12562 | if (dwp_file != NULL) |
cf2c3c16 | 12563 | { |
80626a55 DE |
12564 | const struct dwp_hash_table *dwp_htab = |
12565 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12566 | ||
12567 | if (dwp_htab != NULL) | |
12568 | { | |
12569 | struct dwo_unit *dwo_cutu = | |
ed2dc618 | 12570 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, comp_dir, |
57d63ce2 | 12571 | signature, is_debug_types); |
80626a55 DE |
12572 | |
12573 | if (dwo_cutu != NULL) | |
12574 | { | |
b4f54984 | 12575 | if (dwarf_read_debug) |
80626a55 DE |
12576 | { |
12577 | fprintf_unfiltered (gdb_stdlog, | |
12578 | "Virtual DWO %s %s found: @%s\n", | |
12579 | kind, hex_string (signature), | |
12580 | host_address_to_string (dwo_cutu)); | |
12581 | } | |
12582 | return dwo_cutu; | |
12583 | } | |
12584 | } | |
12585 | } | |
6a506a2d | 12586 | else |
80626a55 | 12587 | { |
6a506a2d | 12588 | /* No DWP file, look for the DWO file. */ |
80626a55 | 12589 | |
ed2dc618 SM |
12590 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12591 | dwo_name, comp_dir); | |
6a506a2d | 12592 | if (*dwo_file_slot == NULL) |
80626a55 | 12593 | { |
6a506a2d DE |
12594 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
12595 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 12596 | } |
6a506a2d | 12597 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 12598 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 12599 | |
6a506a2d | 12600 | if (dwo_file != NULL) |
19c3d4c9 | 12601 | { |
6a506a2d DE |
12602 | struct dwo_unit *dwo_cutu = NULL; |
12603 | ||
12604 | if (is_debug_types && dwo_file->tus) | |
12605 | { | |
12606 | struct dwo_unit find_dwo_cutu; | |
12607 | ||
12608 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12609 | find_dwo_cutu.signature = signature; | |
9a3c8263 | 12610 | dwo_cutu |
b0b6a987 TT |
12611 | = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
12612 | &find_dwo_cutu); | |
6a506a2d | 12613 | } |
33c5cd75 | 12614 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 12615 | { |
33c5cd75 DB |
12616 | struct dwo_unit find_dwo_cutu; |
12617 | ||
12618 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12619 | find_dwo_cutu.signature = signature; | |
b0b6a987 | 12620 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus.get (), |
33c5cd75 | 12621 | &find_dwo_cutu); |
6a506a2d DE |
12622 | } |
12623 | ||
12624 | if (dwo_cutu != NULL) | |
12625 | { | |
b4f54984 | 12626 | if (dwarf_read_debug) |
6a506a2d DE |
12627 | { |
12628 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
12629 | kind, dwo_name, hex_string (signature), | |
12630 | host_address_to_string (dwo_cutu)); | |
12631 | } | |
12632 | return dwo_cutu; | |
80626a55 DE |
12633 | } |
12634 | } | |
2e276125 | 12635 | } |
9cdd5dbd | 12636 | |
80626a55 DE |
12637 | /* We didn't find it. This could mean a dwo_id mismatch, or |
12638 | someone deleted the DWO/DWP file, or the search path isn't set up | |
12639 | correctly to find the file. */ | |
12640 | ||
b4f54984 | 12641 | if (dwarf_read_debug) |
80626a55 DE |
12642 | { |
12643 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
12644 | kind, dwo_name, hex_string (signature)); | |
12645 | } | |
3019eac3 | 12646 | |
6656a72d DE |
12647 | /* This is a warning and not a complaint because it can be caused by |
12648 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
12649 | { |
12650 | /* Print the name of the DWP file if we looked there, helps the user | |
12651 | better diagnose the problem. */ | |
791afaa2 | 12652 | std::string dwp_text; |
43942612 DE |
12653 | |
12654 | if (dwp_file != NULL) | |
791afaa2 TT |
12655 | dwp_text = string_printf (" [in DWP file %s]", |
12656 | lbasename (dwp_file->name)); | |
43942612 | 12657 | |
9d8780f0 | 12658 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 DE |
12659 | " [in module %s]"), |
12660 | kind, dwo_name, hex_string (signature), | |
791afaa2 | 12661 | dwp_text.c_str (), |
43942612 | 12662 | this_unit->is_debug_types ? "TU" : "CU", |
9d8780f0 | 12663 | sect_offset_str (this_unit->sect_off), objfile_name (objfile)); |
43942612 | 12664 | } |
3019eac3 | 12665 | return NULL; |
5fb290d7 DJ |
12666 | } |
12667 | ||
80626a55 DE |
12668 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
12669 | See lookup_dwo_cutu_unit for details. */ | |
12670 | ||
12671 | static struct dwo_unit * | |
12672 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
12673 | const char *dwo_name, const char *comp_dir, | |
12674 | ULONGEST signature) | |
12675 | { | |
12676 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
12677 | } | |
12678 | ||
12679 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
12680 | See lookup_dwo_cutu_unit for details. */ | |
12681 | ||
12682 | static struct dwo_unit * | |
12683 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
12684 | const char *dwo_name, const char *comp_dir) | |
12685 | { | |
12686 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
12687 | } | |
12688 | ||
89e63ee4 DE |
12689 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
12690 | ||
12691 | static int | |
12692 | queue_and_load_dwo_tu (void **slot, void *info) | |
12693 | { | |
12694 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
12695 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
12696 | ULONGEST signature = dwo_unit->signature; | |
12697 | struct signatured_type *sig_type = | |
12698 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
12699 | ||
12700 | if (sig_type != NULL) | |
12701 | { | |
12702 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
12703 | ||
12704 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
12705 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
12706 | while processing PER_CU. */ | |
12707 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
12708 | load_full_type_unit (sig_cu); | |
ae640021 | 12709 | per_cu->imported_symtabs_push (sig_cu); |
89e63ee4 DE |
12710 | } |
12711 | ||
12712 | return 1; | |
12713 | } | |
12714 | ||
12715 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
12716 | The DWO may have the only definition of the type, though it may not be | |
12717 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
12718 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
12719 | ||
12720 | static void | |
12721 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
12722 | { | |
12723 | struct dwo_unit *dwo_unit; | |
12724 | struct dwo_file *dwo_file; | |
12725 | ||
12726 | gdb_assert (!per_cu->is_debug_types); | |
ed2dc618 | 12727 | gdb_assert (get_dwp_file (per_cu->dwarf2_per_objfile) == NULL); |
89e63ee4 DE |
12728 | gdb_assert (per_cu->cu != NULL); |
12729 | ||
12730 | dwo_unit = per_cu->cu->dwo_unit; | |
12731 | gdb_assert (dwo_unit != NULL); | |
12732 | ||
12733 | dwo_file = dwo_unit->dwo_file; | |
12734 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
12735 | htab_traverse_noresize (dwo_file->tus.get (), queue_and_load_dwo_tu, |
12736 | per_cu); | |
89e63ee4 DE |
12737 | } |
12738 | ||
3019eac3 | 12739 | /* Read in various DIEs. */ |
348e048f | 12740 | |
d389af10 | 12741 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
12742 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
12743 | already referenced by DW_AT_abstract_origin from the children of the | |
12744 | current DIE. */ | |
d389af10 JK |
12745 | |
12746 | static void | |
12747 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
12748 | { | |
12749 | struct die_info *child_die; | |
791afaa2 | 12750 | sect_offset *offsetp; |
d389af10 JK |
12751 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
12752 | struct die_info *origin_die; | |
12753 | /* Iterator of the ORIGIN_DIE children. */ | |
12754 | struct die_info *origin_child_die; | |
d389af10 | 12755 | struct attribute *attr; |
cd02d79d PA |
12756 | struct dwarf2_cu *origin_cu; |
12757 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
12758 | |
12759 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
12760 | if (!attr) | |
12761 | return; | |
12762 | ||
cd02d79d PA |
12763 | /* Note that following die references may follow to a die in a |
12764 | different cu. */ | |
12765 | ||
12766 | origin_cu = cu; | |
12767 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
12768 | ||
12769 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
12770 | symbols in. */ | |
12771 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
12772 | origin_cu->list_in_scope = cu->list_in_scope; | |
12773 | ||
edb3359d DJ |
12774 | if (die->tag != origin_die->tag |
12775 | && !(die->tag == DW_TAG_inlined_subroutine | |
12776 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 12777 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
12778 | sect_offset_str (die->sect_off), |
12779 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 12780 | |
791afaa2 | 12781 | std::vector<sect_offset> offsets; |
d389af10 | 12782 | |
3ea89b92 PMR |
12783 | for (child_die = die->child; |
12784 | child_die && child_die->tag; | |
436c571c | 12785 | child_die = child_die->sibling) |
3ea89b92 PMR |
12786 | { |
12787 | struct die_info *child_origin_die; | |
12788 | struct dwarf2_cu *child_origin_cu; | |
12789 | ||
12790 | /* We are trying to process concrete instance entries: | |
216f72a1 | 12791 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
12792 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
12793 | present in the abstract instance but not referenced in the concrete | |
12794 | one. */ | |
216f72a1 JK |
12795 | if (child_die->tag == DW_TAG_call_site |
12796 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
12797 | continue; |
12798 | ||
c38f313d DJ |
12799 | /* For each CHILD_DIE, find the corresponding child of |
12800 | ORIGIN_DIE. If there is more than one layer of | |
12801 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
12802 | but GCC versions at least through 4.4 generate this (GCC PR | |
12803 | 40573). */ | |
3ea89b92 PMR |
12804 | child_origin_die = child_die; |
12805 | child_origin_cu = cu; | |
c38f313d DJ |
12806 | while (1) |
12807 | { | |
cd02d79d PA |
12808 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
12809 | child_origin_cu); | |
c38f313d DJ |
12810 | if (attr == NULL) |
12811 | break; | |
cd02d79d PA |
12812 | child_origin_die = follow_die_ref (child_origin_die, attr, |
12813 | &child_origin_cu); | |
c38f313d DJ |
12814 | } |
12815 | ||
d389af10 JK |
12816 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
12817 | counterpart may exist. */ | |
c38f313d | 12818 | if (child_origin_die != child_die) |
d389af10 | 12819 | { |
edb3359d DJ |
12820 | if (child_die->tag != child_origin_die->tag |
12821 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
12822 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 12823 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 12824 | "different tags"), |
9d8780f0 SM |
12825 | sect_offset_str (child_die->sect_off), |
12826 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 12827 | if (child_origin_die->parent != origin_die) |
b98664d3 | 12828 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 12829 | "different parents"), |
9d8780f0 SM |
12830 | sect_offset_str (child_die->sect_off), |
12831 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 12832 | else |
791afaa2 | 12833 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 12834 | } |
d389af10 | 12835 | } |
791afaa2 TT |
12836 | std::sort (offsets.begin (), offsets.end ()); |
12837 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
12838 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 12839 | if (offsetp[-1] == *offsetp) |
b98664d3 | 12840 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
12841 | "to DIE %s as their abstract origin"), |
12842 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 12843 | |
791afaa2 | 12844 | offsetp = offsets.data (); |
d389af10 JK |
12845 | origin_child_die = origin_die->child; |
12846 | while (origin_child_die && origin_child_die->tag) | |
12847 | { | |
12848 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 12849 | while (offsetp < offsets_end |
9c541725 | 12850 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 12851 | offsetp++; |
b64f50a1 | 12852 | if (offsetp >= offsets_end |
9c541725 | 12853 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 12854 | { |
adde2bff DE |
12855 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
12856 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
12857 | This can happen with mutually referenced abstract_origins. | |
12858 | PR 16581. */ | |
12859 | if (!origin_child_die->in_process) | |
12860 | process_die (origin_child_die, origin_cu); | |
d389af10 | 12861 | } |
436c571c | 12862 | origin_child_die = origin_child_die->sibling; |
d389af10 | 12863 | } |
cd02d79d | 12864 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
12865 | |
12866 | if (cu != origin_cu) | |
12867 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
12868 | } |
12869 | ||
c906108c | 12870 | static void |
e7c27a73 | 12871 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12872 | { |
518817b3 | 12873 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
08feed99 | 12874 | struct gdbarch *gdbarch = objfile->arch (); |
fe978cb0 | 12875 | struct context_stack *newobj; |
c906108c SS |
12876 | CORE_ADDR lowpc; |
12877 | CORE_ADDR highpc; | |
12878 | struct die_info *child_die; | |
edb3359d | 12879 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 12880 | const char *name; |
e142c38c | 12881 | CORE_ADDR baseaddr; |
801e3a5b | 12882 | struct block *block; |
edb3359d | 12883 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 12884 | std::vector<struct symbol *> template_args; |
34eaf542 | 12885 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
12886 | |
12887 | if (inlined_func) | |
12888 | { | |
12889 | /* If we do not have call site information, we can't show the | |
12890 | caller of this inlined function. That's too confusing, so | |
12891 | only use the scope for local variables. */ | |
12892 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
12893 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
12894 | if (call_line == NULL || call_file == NULL) | |
12895 | { | |
12896 | read_lexical_block_scope (die, cu); | |
12897 | return; | |
12898 | } | |
12899 | } | |
c906108c | 12900 | |
b3b3bada | 12901 | baseaddr = objfile->text_section_offset (); |
e142c38c | 12902 | |
94af9270 | 12903 | name = dwarf2_name (die, cu); |
c906108c | 12904 | |
e8d05480 JB |
12905 | /* Ignore functions with missing or empty names. These are actually |
12906 | illegal according to the DWARF standard. */ | |
12907 | if (name == NULL) | |
12908 | { | |
b98664d3 | 12909 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 12910 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
12911 | return; |
12912 | } | |
12913 | ||
12914 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 12915 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 12916 | <= PC_BOUNDS_INVALID) |
e8d05480 | 12917 | { |
ae4d0c03 PM |
12918 | attr = dwarf2_attr (die, DW_AT_external, cu); |
12919 | if (!attr || !DW_UNSND (attr)) | |
b98664d3 | 12920 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
12921 | "for subprogram DIE at %s"), |
12922 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
12923 | return; |
12924 | } | |
c906108c | 12925 | |
3e29f34a MR |
12926 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
12927 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 12928 | |
34eaf542 TT |
12929 | /* If we have any template arguments, then we must allocate a |
12930 | different sort of symbol. */ | |
436c571c | 12931 | for (child_die = die->child; child_die; child_die = child_die->sibling) |
34eaf542 TT |
12932 | { |
12933 | if (child_die->tag == DW_TAG_template_type_param | |
12934 | || child_die->tag == DW_TAG_template_value_param) | |
12935 | { | |
e623cf5d | 12936 | templ_func = allocate_template_symbol (objfile); |
cf724bc9 | 12937 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
12938 | break; |
12939 | } | |
12940 | } | |
12941 | ||
c24bdb02 | 12942 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
12943 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
12944 | (struct symbol *) templ_func); | |
4c2df51b | 12945 | |
81873cc8 | 12946 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 12947 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
12948 | cu->language); |
12949 | ||
4cecd739 DJ |
12950 | /* If there is a location expression for DW_AT_frame_base, record |
12951 | it. */ | |
e142c38c | 12952 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 12953 | if (attr != nullptr) |
fe978cb0 | 12954 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 12955 | |
63e43d3a PMR |
12956 | /* If there is a location for the static link, record it. */ |
12957 | newobj->static_link = NULL; | |
12958 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 12959 | if (attr != nullptr) |
63e43d3a | 12960 | { |
224c3ddb SM |
12961 | newobj->static_link |
12962 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d | 12963 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
09ba997f | 12964 | cu->per_cu->addr_type ()); |
63e43d3a PMR |
12965 | } |
12966 | ||
c24bdb02 | 12967 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 12968 | |
639d11d3 | 12969 | if (die->child != NULL) |
c906108c | 12970 | { |
639d11d3 | 12971 | child_die = die->child; |
c906108c SS |
12972 | while (child_die && child_die->tag) |
12973 | { | |
34eaf542 TT |
12974 | if (child_die->tag == DW_TAG_template_type_param |
12975 | || child_die->tag == DW_TAG_template_value_param) | |
12976 | { | |
12977 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
12978 | ||
f1078f66 | 12979 | if (arg != NULL) |
2f4732b0 | 12980 | template_args.push_back (arg); |
34eaf542 TT |
12981 | } |
12982 | else | |
12983 | process_die (child_die, cu); | |
436c571c | 12984 | child_die = child_die->sibling; |
c906108c SS |
12985 | } |
12986 | } | |
12987 | ||
d389af10 JK |
12988 | inherit_abstract_dies (die, cu); |
12989 | ||
4a811a97 UW |
12990 | /* If we have a DW_AT_specification, we might need to import using |
12991 | directives from the context of the specification DIE. See the | |
12992 | comment in determine_prefix. */ | |
12993 | if (cu->language == language_cplus | |
12994 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
12995 | { | |
12996 | struct dwarf2_cu *spec_cu = cu; | |
12997 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
12998 | ||
12999 | while (spec_die) | |
13000 | { | |
13001 | child_die = spec_die->child; | |
13002 | while (child_die && child_die->tag) | |
13003 | { | |
13004 | if (child_die->tag == DW_TAG_imported_module) | |
13005 | process_die (child_die, spec_cu); | |
436c571c | 13006 | child_die = child_die->sibling; |
4a811a97 UW |
13007 | } |
13008 | ||
13009 | /* In some cases, GCC generates specification DIEs that | |
13010 | themselves contain DW_AT_specification attributes. */ | |
13011 | spec_die = die_specification (spec_die, &spec_cu); | |
13012 | } | |
13013 | } | |
13014 | ||
c24bdb02 | 13015 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13016 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13017 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13018 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13019 | |
df8a16a1 | 13020 | /* For C++, set the block's scope. */ |
45280282 IB |
13021 | if ((cu->language == language_cplus |
13022 | || cu->language == language_fortran | |
c44af4eb TT |
13023 | || cu->language == language_d |
13024 | || cu->language == language_rust) | |
4d4ec4e5 | 13025 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13026 | block_set_scope (block, determine_prefix (die, cu), |
13027 | &objfile->objfile_obstack); | |
df8a16a1 | 13028 | |
801e3a5b JB |
13029 | /* If we have address ranges, record them. */ |
13030 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13031 | |
a60f3166 | 13032 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13033 | |
34eaf542 | 13034 | /* Attach template arguments to function. */ |
2f4732b0 | 13035 | if (!template_args.empty ()) |
34eaf542 TT |
13036 | { |
13037 | gdb_assert (templ_func != NULL); | |
13038 | ||
2f4732b0 | 13039 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13040 | templ_func->template_arguments |
8d749320 SM |
13041 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
13042 | templ_func->n_template_arguments); | |
34eaf542 | 13043 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13044 | template_args.data (), |
34eaf542 | 13045 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13046 | |
13047 | /* Make sure that the symtab is set on the new symbols. Even | |
13048 | though they don't appear in this symtab directly, other parts | |
13049 | of gdb assume that symbols do, and this is reasonably | |
13050 | true. */ | |
8634679f | 13051 | for (symbol *sym : template_args) |
3e1d3d8c | 13052 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13053 | } |
13054 | ||
208d8187 JB |
13055 | /* In C++, we can have functions nested inside functions (e.g., when |
13056 | a function declares a class that has methods). This means that | |
13057 | when we finish processing a function scope, we may need to go | |
13058 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13059 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13060 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13061 | |
921e78cf JB |
13062 | /* If we've finished processing a top-level function, subsequent |
13063 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13064 | if (cu->get_builder ()->outermost_context_p ()) |
13065 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13066 | } |
13067 | ||
13068 | /* Process all the DIES contained within a lexical block scope. Start | |
13069 | a new scope, process the dies, and then close the scope. */ | |
13070 | ||
13071 | static void | |
e7c27a73 | 13072 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13073 | { |
518817b3 | 13074 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
08feed99 | 13075 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
13076 | CORE_ADDR lowpc, highpc; |
13077 | struct die_info *child_die; | |
e142c38c DJ |
13078 | CORE_ADDR baseaddr; |
13079 | ||
b3b3bada | 13080 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
13081 | |
13082 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13083 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13084 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13085 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13086 | describe ranges. */ |
e385593e JK |
13087 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13088 | { | |
13089 | case PC_BOUNDS_NOT_PRESENT: | |
13090 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13091 | there was no wrapping by that DW_TAG_lexical_block. | |
13092 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13093 | for (child_die = die->child; | |
13094 | child_die != NULL && child_die->tag; | |
436c571c | 13095 | child_die = child_die->sibling) |
e385593e JK |
13096 | process_die (child_die, cu); |
13097 | return; | |
13098 | case PC_BOUNDS_INVALID: | |
13099 | return; | |
13100 | } | |
3e29f34a MR |
13101 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13102 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13103 | |
c24bdb02 | 13104 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13105 | if (die->child != NULL) |
c906108c | 13106 | { |
639d11d3 | 13107 | child_die = die->child; |
c906108c SS |
13108 | while (child_die && child_die->tag) |
13109 | { | |
e7c27a73 | 13110 | process_die (child_die, cu); |
436c571c | 13111 | child_die = child_die->sibling; |
c906108c SS |
13112 | } |
13113 | } | |
3ea89b92 | 13114 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13115 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13116 | |
c24bdb02 KS |
13117 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13118 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13119 | { |
801e3a5b | 13120 | struct block *block |
c24bdb02 | 13121 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13122 | cstk.start_addr, highpc); |
801e3a5b JB |
13123 | |
13124 | /* Note that recording ranges after traversing children, as we | |
13125 | do here, means that recording a parent's ranges entails | |
13126 | walking across all its children's ranges as they appear in | |
13127 | the address map, which is quadratic behavior. | |
13128 | ||
13129 | It would be nicer to record the parent's ranges before | |
13130 | traversing its children, simply overriding whatever you find | |
13131 | there. But since we don't even decide whether to create a | |
13132 | block until after we've traversed its children, that's hard | |
13133 | to do. */ | |
13134 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13135 | } |
c24bdb02 KS |
13136 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13137 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13138 | } |
13139 | ||
216f72a1 | 13140 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13141 | |
13142 | static void | |
13143 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13144 | { | |
518817b3 | 13145 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
08feed99 | 13146 | struct gdbarch *gdbarch = objfile->arch (); |
96408a79 SA |
13147 | CORE_ADDR pc, baseaddr; |
13148 | struct attribute *attr; | |
13149 | struct call_site *call_site, call_site_local; | |
13150 | void **slot; | |
13151 | int nparams; | |
13152 | struct die_info *child_die; | |
13153 | ||
b3b3bada | 13154 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13155 | |
216f72a1 JK |
13156 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13157 | if (attr == NULL) | |
13158 | { | |
13159 | /* This was a pre-DWARF-5 GNU extension alias | |
13160 | for DW_AT_call_return_pc. */ | |
13161 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13162 | } | |
96408a79 SA |
13163 | if (!attr) |
13164 | { | |
b98664d3 | 13165 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13166 | "DIE %s [in module %s]"), |
13167 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13168 | return; |
13169 | } | |
cd6c91b4 | 13170 | pc = attr->value_as_address () + baseaddr; |
3e29f34a | 13171 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13172 | |
13173 | if (cu->call_site_htab == NULL) | |
13174 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13175 | NULL, &objfile->objfile_obstack, | |
13176 | hashtab_obstack_allocate, NULL); | |
13177 | call_site_local.pc = pc; | |
13178 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13179 | if (*slot != NULL) | |
13180 | { | |
b98664d3 | 13181 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13182 | "DIE %s [in module %s]"), |
13183 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13184 | objfile_name (objfile)); |
96408a79 SA |
13185 | return; |
13186 | } | |
13187 | ||
13188 | /* Count parameters at the caller. */ | |
13189 | ||
13190 | nparams = 0; | |
13191 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 13192 | child_die = child_die->sibling) |
96408a79 | 13193 | { |
216f72a1 JK |
13194 | if (child_die->tag != DW_TAG_call_site_parameter |
13195 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 | 13196 | { |
b98664d3 | 13197 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13198 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13199 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13200 | objfile_name (objfile)); |
96408a79 SA |
13201 | continue; |
13202 | } | |
13203 | ||
13204 | nparams++; | |
13205 | } | |
13206 | ||
224c3ddb SM |
13207 | call_site |
13208 | = ((struct call_site *) | |
13209 | obstack_alloc (&objfile->objfile_obstack, | |
13210 | sizeof (*call_site) | |
13211 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13212 | *slot = call_site; |
13213 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13214 | call_site->pc = pc; | |
13215 | ||
216f72a1 JK |
13216 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13217 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13218 | { |
13219 | struct die_info *func_die; | |
13220 | ||
13221 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13222 | for (func_die = die->parent; | |
13223 | func_die && func_die->tag != DW_TAG_subprogram | |
13224 | && func_die->tag != DW_TAG_subroutine_type; | |
13225 | func_die = func_die->parent); | |
13226 | ||
216f72a1 JK |
13227 | /* DW_AT_call_all_calls is a superset |
13228 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13229 | if (func_die |
216f72a1 | 13230 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 13231 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 13232 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13233 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13234 | { | |
13235 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13236 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13237 | both the initial caller containing the real return address PC and | |
13238 | the final callee containing the current PC of a chain of tail | |
13239 | calls do not need to have the tail call list complete. But any | |
13240 | function candidate for a virtual tail call frame searched via | |
13241 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13242 | determined unambiguously. */ | |
13243 | } | |
13244 | else | |
13245 | { | |
13246 | struct type *func_type = NULL; | |
13247 | ||
13248 | if (func_die) | |
13249 | func_type = get_die_type (func_die, cu); | |
13250 | if (func_type != NULL) | |
13251 | { | |
13252 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
13253 | ||
13254 | /* Enlist this call site to the function. */ | |
13255 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13256 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13257 | } | |
13258 | else | |
b98664d3 | 13259 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13260 | "DIE %s [in module %s]"), |
13261 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13262 | } |
13263 | } | |
13264 | ||
216f72a1 JK |
13265 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13266 | if (attr == NULL) | |
13267 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
13268 | if (attr == NULL) | |
13269 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 13270 | if (attr == NULL) |
216f72a1 JK |
13271 | { |
13272 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
13273 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13274 | } | |
96408a79 | 13275 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
4fc6c0d5 | 13276 | if (!attr || (attr->form_is_block () && DW_BLOCK (attr)->size == 0)) |
96408a79 | 13277 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 13278 | else if (attr->form_is_block ()) |
96408a79 SA |
13279 | { |
13280 | struct dwarf2_locexpr_baton *dlbaton; | |
13281 | ||
8d749320 | 13282 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
13283 | dlbaton->data = DW_BLOCK (attr)->data; |
13284 | dlbaton->size = DW_BLOCK (attr)->size; | |
13285 | dlbaton->per_cu = cu->per_cu; | |
13286 | ||
13287 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
13288 | } | |
cd6c91b4 | 13289 | else if (attr->form_is_ref ()) |
96408a79 | 13290 | { |
96408a79 SA |
13291 | struct dwarf2_cu *target_cu = cu; |
13292 | struct die_info *target_die; | |
13293 | ||
ac9ec31b | 13294 | target_die = follow_die_ref (die, attr, &target_cu); |
518817b3 | 13295 | gdb_assert (target_cu->per_cu->dwarf2_per_objfile->objfile == objfile); |
96408a79 SA |
13296 | if (die_is_declaration (target_die, target_cu)) |
13297 | { | |
7d45c7c3 | 13298 | const char *target_physname; |
9112db09 JK |
13299 | |
13300 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 13301 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 13302 | if (target_physname == NULL) |
9112db09 | 13303 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 13304 | if (target_physname == NULL) |
b98664d3 | 13305 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13306 | "physname, for referencing DIE %s [in module %s]"), |
13307 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13308 | else |
7d455152 | 13309 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
13310 | } |
13311 | else | |
13312 | { | |
13313 | CORE_ADDR lowpc; | |
13314 | ||
13315 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 13316 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 13317 | <= PC_BOUNDS_INVALID) |
b98664d3 | 13318 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13319 | "low pc, for referencing DIE %s [in module %s]"), |
13320 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13321 | else |
3e29f34a MR |
13322 | { |
13323 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
13324 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
13325 | } | |
96408a79 SA |
13326 | } |
13327 | } | |
13328 | else | |
b98664d3 | 13329 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
13330 | "block nor reference, for DIE %s [in module %s]"), |
13331 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13332 | |
13333 | call_site->per_cu = cu->per_cu; | |
13334 | ||
13335 | for (child_die = die->child; | |
13336 | child_die && child_die->tag; | |
436c571c | 13337 | child_die = child_die->sibling) |
96408a79 | 13338 | { |
96408a79 | 13339 | struct call_site_parameter *parameter; |
1788b2d3 | 13340 | struct attribute *loc, *origin; |
96408a79 | 13341 | |
216f72a1 JK |
13342 | if (child_die->tag != DW_TAG_call_site_parameter |
13343 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
13344 | { |
13345 | /* Already printed the complaint above. */ | |
13346 | continue; | |
13347 | } | |
13348 | ||
13349 | gdb_assert (call_site->parameter_count < nparams); | |
13350 | parameter = &call_site->parameter[call_site->parameter_count]; | |
13351 | ||
1788b2d3 JK |
13352 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
13353 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 13354 | register is contained in DW_AT_call_value. */ |
96408a79 | 13355 | |
24c5c679 | 13356 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
13357 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
13358 | if (origin == NULL) | |
13359 | { | |
13360 | /* This was a pre-DWARF-5 GNU extension alias | |
13361 | for DW_AT_call_parameter. */ | |
13362 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
13363 | } | |
cd6c91b4 | 13364 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 13365 | { |
1788b2d3 | 13366 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 | 13367 | |
0826b30a | 13368 | sect_offset sect_off = origin->get_ref_die_offset (); |
4057dfde | 13369 | if (!cu->header.offset_in_cu_p (sect_off)) |
d76b7dbc JK |
13370 | { |
13371 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
13372 | binding can be done only inside one CU. Such referenced DIE | |
13373 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 13374 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
13375 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13376 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13377 | objfile_name (objfile)); |
d76b7dbc JK |
13378 | continue; |
13379 | } | |
9c541725 PA |
13380 | parameter->u.param_cu_off |
13381 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 13382 | } |
4fc6c0d5 | 13383 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 13384 | { |
b98664d3 | 13385 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
13386 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13387 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13388 | continue; |
13389 | } | |
24c5c679 | 13390 | else |
96408a79 | 13391 | { |
24c5c679 JK |
13392 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
13393 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
13394 | if (parameter->u.dwarf_reg != -1) | |
13395 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
13396 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
13397 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
13398 | ¶meter->u.fb_offset)) | |
13399 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
13400 | else | |
13401 | { | |
b98664d3 | 13402 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 13403 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 13404 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 13405 | "[in module %s]"), |
9d8780f0 | 13406 | sect_offset_str (child_die->sect_off), |
9c541725 | 13407 | objfile_name (objfile)); |
24c5c679 JK |
13408 | continue; |
13409 | } | |
96408a79 SA |
13410 | } |
13411 | ||
216f72a1 JK |
13412 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
13413 | if (attr == NULL) | |
13414 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 13415 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 13416 | { |
b98664d3 | 13417 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
13418 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13419 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13420 | objfile_name (objfile)); |
96408a79 SA |
13421 | continue; |
13422 | } | |
13423 | parameter->value = DW_BLOCK (attr)->data; | |
13424 | parameter->value_size = DW_BLOCK (attr)->size; | |
13425 | ||
13426 | /* Parameters are not pre-cleared by memset above. */ | |
13427 | parameter->data_value = NULL; | |
13428 | parameter->data_value_size = 0; | |
13429 | call_site->parameter_count++; | |
13430 | ||
216f72a1 JK |
13431 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
13432 | if (attr == NULL) | |
13433 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 13434 | if (attr != nullptr) |
96408a79 | 13435 | { |
4fc6c0d5 | 13436 | if (!attr->form_is_block ()) |
b98664d3 | 13437 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
13438 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13439 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13440 | objfile_name (objfile)); |
96408a79 SA |
13441 | else |
13442 | { | |
13443 | parameter->data_value = DW_BLOCK (attr)->data; | |
13444 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
13445 | } | |
13446 | } | |
13447 | } | |
13448 | } | |
13449 | ||
71a3c369 TT |
13450 | /* Helper function for read_variable. If DIE represents a virtual |
13451 | table, then return the type of the concrete object that is | |
13452 | associated with the virtual table. Otherwise, return NULL. */ | |
13453 | ||
13454 | static struct type * | |
13455 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
13456 | { | |
13457 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
13458 | if (attr == NULL) | |
13459 | return NULL; | |
13460 | ||
13461 | /* Find the type DIE. */ | |
13462 | struct die_info *type_die = NULL; | |
13463 | struct dwarf2_cu *type_cu = cu; | |
13464 | ||
cd6c91b4 | 13465 | if (attr->form_is_ref ()) |
71a3c369 TT |
13466 | type_die = follow_die_ref (die, attr, &type_cu); |
13467 | if (type_die == NULL) | |
13468 | return NULL; | |
13469 | ||
13470 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
13471 | return NULL; | |
13472 | return die_containing_type (type_die, type_cu); | |
13473 | } | |
13474 | ||
13475 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
13476 | ||
13477 | static void | |
13478 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
13479 | { | |
13480 | struct rust_vtable_symbol *storage = NULL; | |
13481 | ||
13482 | if (cu->language == language_rust) | |
13483 | { | |
13484 | struct type *containing_type = rust_containing_type (die, cu); | |
13485 | ||
13486 | if (containing_type != NULL) | |
13487 | { | |
518817b3 | 13488 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
71a3c369 | 13489 | |
468c0cbb | 13490 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol (); |
71a3c369 TT |
13491 | initialize_objfile_symbol (storage); |
13492 | storage->concrete_type = containing_type; | |
cf724bc9 | 13493 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
13494 | } |
13495 | } | |
13496 | ||
e4a62c65 TV |
13497 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
13498 | struct attribute *abstract_origin | |
13499 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13500 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
13501 | if (res == NULL && loc && abstract_origin) | |
13502 | { | |
13503 | /* We have a variable without a name, but with a location and an abstract | |
13504 | origin. This may be a concrete instance of an abstract variable | |
13505 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
13506 | later. */ | |
13507 | struct dwarf2_cu *origin_cu = cu; | |
13508 | struct die_info *origin_die | |
13509 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
13510 | dwarf2_per_objfile *dpo = cu->per_cu->dwarf2_per_objfile; | |
3360b6e7 | 13511 | dpo->abstract_to_concrete[origin_die->sect_off].push_back (die->sect_off); |
e4a62c65 | 13512 | } |
71a3c369 TT |
13513 | } |
13514 | ||
43988095 JK |
13515 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
13516 | reading .debug_rnglists. | |
13517 | Callback's type should be: | |
13518 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13519 | Return true if the attributes are present and valid, otherwise, | |
13520 | return false. */ | |
13521 | ||
13522 | template <typename Callback> | |
13523 | static bool | |
13524 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
13525 | Callback &&callback) | |
13526 | { | |
ed2dc618 | 13527 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 13528 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 13529 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43988095 | 13530 | bfd *obfd = objfile->obfd; |
43988095 | 13531 | /* Base address selection entry. */ |
2b24b6e4 | 13532 | gdb::optional<CORE_ADDR> base; |
43988095 | 13533 | const gdb_byte *buffer; |
43988095 JK |
13534 | CORE_ADDR baseaddr; |
13535 | bool overflow = false; | |
13536 | ||
43988095 JK |
13537 | base = cu->base_address; |
13538 | ||
96b79293 | 13539 | dwarf2_per_objfile->rnglists.read (objfile); |
43988095 JK |
13540 | if (offset >= dwarf2_per_objfile->rnglists.size) |
13541 | { | |
b98664d3 | 13542 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
13543 | offset); |
13544 | return false; | |
13545 | } | |
13546 | buffer = dwarf2_per_objfile->rnglists.buffer + offset; | |
13547 | ||
b3b3bada | 13548 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
13549 | |
13550 | while (1) | |
13551 | { | |
7814882a JK |
13552 | /* Initialize it due to a false compiler warning. */ |
13553 | CORE_ADDR range_beginning = 0, range_end = 0; | |
43988095 JK |
13554 | const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer |
13555 | + dwarf2_per_objfile->rnglists.size); | |
13556 | unsigned int bytes_read; | |
13557 | ||
13558 | if (buffer == buf_end) | |
13559 | { | |
13560 | overflow = true; | |
13561 | break; | |
13562 | } | |
13563 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
13564 | switch (rlet) | |
13565 | { | |
13566 | case DW_RLE_end_of_list: | |
13567 | break; | |
13568 | case DW_RLE_base_address: | |
13569 | if (buffer + cu->header.addr_size > buf_end) | |
13570 | { | |
13571 | overflow = true; | |
13572 | break; | |
13573 | } | |
c8a7a66f | 13574 | base = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13575 | buffer += bytes_read; |
13576 | break; | |
13577 | case DW_RLE_start_length: | |
13578 | if (buffer + cu->header.addr_size > buf_end) | |
13579 | { | |
13580 | overflow = true; | |
13581 | break; | |
13582 | } | |
c8a7a66f TT |
13583 | range_beginning = cu->header.read_address (obfd, buffer, |
13584 | &bytes_read); | |
43988095 JK |
13585 | buffer += bytes_read; |
13586 | range_end = (range_beginning | |
13587 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
13588 | buffer += bytes_read; | |
13589 | if (buffer > buf_end) | |
13590 | { | |
13591 | overflow = true; | |
13592 | break; | |
13593 | } | |
13594 | break; | |
13595 | case DW_RLE_offset_pair: | |
13596 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13597 | buffer += bytes_read; | |
13598 | if (buffer > buf_end) | |
13599 | { | |
13600 | overflow = true; | |
13601 | break; | |
13602 | } | |
13603 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13604 | buffer += bytes_read; | |
13605 | if (buffer > buf_end) | |
13606 | { | |
13607 | overflow = true; | |
13608 | break; | |
13609 | } | |
13610 | break; | |
13611 | case DW_RLE_start_end: | |
13612 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
13613 | { | |
13614 | overflow = true; | |
13615 | break; | |
13616 | } | |
c8a7a66f TT |
13617 | range_beginning = cu->header.read_address (obfd, buffer, |
13618 | &bytes_read); | |
43988095 | 13619 | buffer += bytes_read; |
c8a7a66f | 13620 | range_end = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13621 | buffer += bytes_read; |
13622 | break; | |
13623 | default: | |
b98664d3 | 13624 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13625 | return false; |
13626 | } | |
13627 | if (rlet == DW_RLE_end_of_list || overflow) | |
13628 | break; | |
13629 | if (rlet == DW_RLE_base_address) | |
13630 | continue; | |
13631 | ||
2b24b6e4 | 13632 | if (!base.has_value ()) |
43988095 JK |
13633 | { |
13634 | /* We have no valid base address for the ranges | |
13635 | data. */ | |
b98664d3 | 13636 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13637 | return false; |
13638 | } | |
13639 | ||
13640 | if (range_beginning > range_end) | |
13641 | { | |
13642 | /* Inverted range entries are invalid. */ | |
b98664d3 | 13643 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
13644 | return false; |
13645 | } | |
13646 | ||
13647 | /* Empty range entries have no effect. */ | |
13648 | if (range_beginning == range_end) | |
13649 | continue; | |
13650 | ||
2b24b6e4 TT |
13651 | range_beginning += *base; |
13652 | range_end += *base; | |
43988095 JK |
13653 | |
13654 | /* A not-uncommon case of bad debug info. | |
13655 | Don't pollute the addrmap with bad data. */ | |
13656 | if (range_beginning + baseaddr == 0 | |
13657 | && !dwarf2_per_objfile->has_section_at_zero) | |
13658 | { | |
b98664d3 | 13659 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
13660 | " [in module %s]"), objfile_name (objfile)); |
13661 | continue; | |
13662 | } | |
13663 | ||
13664 | callback (range_beginning, range_end); | |
13665 | } | |
13666 | ||
13667 | if (overflow) | |
13668 | { | |
b98664d3 | 13669 | complaint (_("Offset %d is not terminated " |
43988095 JK |
13670 | "for DW_AT_ranges attribute"), |
13671 | offset); | |
13672 | return false; | |
13673 | } | |
13674 | ||
13675 | return true; | |
13676 | } | |
13677 | ||
13678 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
13679 | Callback's type should be: | |
13680 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 13681 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 13682 | |
43988095 | 13683 | template <typename Callback> |
43039443 | 13684 | static int |
5f46c5a5 | 13685 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 13686 | Callback &&callback) |
43039443 | 13687 | { |
ed2dc618 | 13688 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 13689 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 13690 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43039443 JK |
13691 | struct comp_unit_head *cu_header = &cu->header; |
13692 | bfd *obfd = objfile->obfd; | |
13693 | unsigned int addr_size = cu_header->addr_size; | |
13694 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
13695 | /* Base address selection entry. */ | |
2b24b6e4 | 13696 | gdb::optional<CORE_ADDR> base; |
43039443 | 13697 | unsigned int dummy; |
d521ce57 | 13698 | const gdb_byte *buffer; |
ff013f42 | 13699 | CORE_ADDR baseaddr; |
43039443 | 13700 | |
43988095 JK |
13701 | if (cu_header->version >= 5) |
13702 | return dwarf2_rnglists_process (offset, cu, callback); | |
13703 | ||
d00adf39 | 13704 | base = cu->base_address; |
43039443 | 13705 | |
96b79293 | 13706 | dwarf2_per_objfile->ranges.read (objfile); |
dce234bc | 13707 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 | 13708 | { |
b98664d3 | 13709 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
13710 | offset); |
13711 | return 0; | |
13712 | } | |
dce234bc | 13713 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 | 13714 | |
b3b3bada | 13715 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 13716 | |
43039443 JK |
13717 | while (1) |
13718 | { | |
13719 | CORE_ADDR range_beginning, range_end; | |
13720 | ||
c8a7a66f | 13721 | range_beginning = cu->header.read_address (obfd, buffer, &dummy); |
43039443 | 13722 | buffer += addr_size; |
c8a7a66f | 13723 | range_end = cu->header.read_address (obfd, buffer, &dummy); |
43039443 JK |
13724 | buffer += addr_size; |
13725 | offset += 2 * addr_size; | |
13726 | ||
13727 | /* An end of list marker is a pair of zero addresses. */ | |
13728 | if (range_beginning == 0 && range_end == 0) | |
13729 | /* Found the end of list entry. */ | |
13730 | break; | |
13731 | ||
13732 | /* Each base address selection entry is a pair of 2 values. | |
13733 | The first is the largest possible address, the second is | |
13734 | the base address. Check for a base address here. */ | |
13735 | if ((range_beginning & mask) == mask) | |
13736 | { | |
28d2bfb9 AB |
13737 | /* If we found the largest possible address, then we already |
13738 | have the base address in range_end. */ | |
13739 | base = range_end; | |
43039443 JK |
13740 | continue; |
13741 | } | |
13742 | ||
2b24b6e4 | 13743 | if (!base.has_value ()) |
43039443 JK |
13744 | { |
13745 | /* We have no valid base address for the ranges | |
13746 | data. */ | |
b98664d3 | 13747 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
13748 | return 0; |
13749 | } | |
13750 | ||
9277c30c UW |
13751 | if (range_beginning > range_end) |
13752 | { | |
13753 | /* Inverted range entries are invalid. */ | |
b98664d3 | 13754 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
13755 | return 0; |
13756 | } | |
13757 | ||
13758 | /* Empty range entries have no effect. */ | |
13759 | if (range_beginning == range_end) | |
13760 | continue; | |
13761 | ||
2b24b6e4 TT |
13762 | range_beginning += *base; |
13763 | range_end += *base; | |
43039443 | 13764 | |
01093045 DE |
13765 | /* A not-uncommon case of bad debug info. |
13766 | Don't pollute the addrmap with bad data. */ | |
13767 | if (range_beginning + baseaddr == 0 | |
13768 | && !dwarf2_per_objfile->has_section_at_zero) | |
13769 | { | |
b98664d3 | 13770 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 13771 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
13772 | continue; |
13773 | } | |
13774 | ||
5f46c5a5 JK |
13775 | callback (range_beginning, range_end); |
13776 | } | |
13777 | ||
13778 | return 1; | |
13779 | } | |
13780 | ||
13781 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
13782 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
13783 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
13784 | ||
13785 | static int | |
13786 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
13787 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
891813be | 13788 | dwarf2_psymtab *ranges_pst) |
5f46c5a5 | 13789 | { |
518817b3 | 13790 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
08feed99 | 13791 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 13792 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
13793 | int low_set = 0; |
13794 | CORE_ADDR low = 0; | |
13795 | CORE_ADDR high = 0; | |
13796 | int retval; | |
13797 | ||
13798 | retval = dwarf2_ranges_process (offset, cu, | |
13799 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13800 | { | |
9277c30c | 13801 | if (ranges_pst != NULL) |
3e29f34a MR |
13802 | { |
13803 | CORE_ADDR lowpc; | |
13804 | CORE_ADDR highpc; | |
13805 | ||
79748972 TT |
13806 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
13807 | range_beginning + baseaddr) | |
13808 | - baseaddr); | |
13809 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
13810 | range_end + baseaddr) | |
13811 | - baseaddr); | |
d320c2b5 TT |
13812 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
13813 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 13814 | } |
ff013f42 | 13815 | |
43039443 JK |
13816 | /* FIXME: This is recording everything as a low-high |
13817 | segment of consecutive addresses. We should have a | |
13818 | data structure for discontiguous block ranges | |
13819 | instead. */ | |
13820 | if (! low_set) | |
13821 | { | |
13822 | low = range_beginning; | |
13823 | high = range_end; | |
13824 | low_set = 1; | |
13825 | } | |
13826 | else | |
13827 | { | |
13828 | if (range_beginning < low) | |
13829 | low = range_beginning; | |
13830 | if (range_end > high) | |
13831 | high = range_end; | |
13832 | } | |
5f46c5a5 JK |
13833 | }); |
13834 | if (!retval) | |
13835 | return 0; | |
43039443 JK |
13836 | |
13837 | if (! low_set) | |
13838 | /* If the first entry is an end-of-list marker, the range | |
13839 | describes an empty scope, i.e. no instructions. */ | |
13840 | return 0; | |
13841 | ||
13842 | if (low_return) | |
13843 | *low_return = low; | |
13844 | if (high_return) | |
13845 | *high_return = high; | |
13846 | return 1; | |
13847 | } | |
13848 | ||
3a2b436a JK |
13849 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
13850 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 13851 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 13852 | |
3a2b436a | 13853 | static enum pc_bounds_kind |
af34e669 | 13854 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 13855 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 13856 | dwarf2_psymtab *pst) |
c906108c | 13857 | { |
518817b3 SM |
13858 | struct dwarf2_per_objfile *dwarf2_per_objfile |
13859 | = cu->per_cu->dwarf2_per_objfile; | |
c906108c | 13860 | struct attribute *attr; |
91da1414 | 13861 | struct attribute *attr_high; |
af34e669 DJ |
13862 | CORE_ADDR low = 0; |
13863 | CORE_ADDR high = 0; | |
e385593e | 13864 | enum pc_bounds_kind ret; |
c906108c | 13865 | |
91da1414 MW |
13866 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
13867 | if (attr_high) | |
af34e669 | 13868 | { |
e142c38c | 13869 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 13870 | if (attr != nullptr) |
91da1414 | 13871 | { |
cd6c91b4 TT |
13872 | low = attr->value_as_address (); |
13873 | high = attr_high->value_as_address (); | |
13874 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) | |
31aa7e4e | 13875 | high += low; |
91da1414 | 13876 | } |
af34e669 DJ |
13877 | else |
13878 | /* Found high w/o low attribute. */ | |
e385593e | 13879 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
13880 | |
13881 | /* Found consecutive range of addresses. */ | |
3a2b436a | 13882 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 13883 | } |
c906108c | 13884 | else |
af34e669 | 13885 | { |
e142c38c | 13886 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
13887 | if (attr != NULL) |
13888 | { | |
18a8505e | 13889 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
13890 | We take advantage of the fact that DW_AT_ranges does not appear |
13891 | in DW_TAG_compile_unit of DWO files. */ | |
13892 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
13893 | unsigned int ranges_offset = (DW_UNSND (attr) | |
13894 | + (need_ranges_base | |
13895 | ? cu->ranges_base | |
13896 | : 0)); | |
2e3cf129 | 13897 | |
af34e669 | 13898 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 13899 | .debug_ranges section. */ |
2e3cf129 | 13900 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 13901 | return PC_BOUNDS_INVALID; |
43039443 | 13902 | /* Found discontinuous range of addresses. */ |
3a2b436a | 13903 | ret = PC_BOUNDS_RANGES; |
af34e669 | 13904 | } |
e385593e JK |
13905 | else |
13906 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 13907 | } |
c906108c | 13908 | |
48fbe735 | 13909 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 13910 | if (high <= low) |
e385593e | 13911 | return PC_BOUNDS_INVALID; |
c906108c SS |
13912 | |
13913 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
13914 | eliminate duplicate copies of functions and vtables and such. | |
13915 | The linker will arbitrarily choose one and discard the others. | |
13916 | The AT_*_pc values for such functions refer to local labels in | |
13917 | these sections. If the section from that file was discarded, the | |
13918 | labels are not in the output, so the relocs get a value of 0. | |
13919 | If this is a discarded function, mark the pc bounds as invalid, | |
13920 | so that GDB will ignore it. */ | |
72dca2f5 | 13921 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
e385593e | 13922 | return PC_BOUNDS_INVALID; |
c906108c SS |
13923 | |
13924 | *lowpc = low; | |
96408a79 SA |
13925 | if (highpc) |
13926 | *highpc = high; | |
af34e669 | 13927 | return ret; |
c906108c SS |
13928 | } |
13929 | ||
b084d499 JB |
13930 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
13931 | its low and high PC addresses. Do nothing if these addresses could not | |
13932 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
13933 | and HIGHPC to the high address if greater than HIGHPC. */ | |
13934 | ||
13935 | static void | |
13936 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
13937 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
13938 | struct dwarf2_cu *cu) | |
13939 | { | |
13940 | CORE_ADDR low, high; | |
13941 | struct die_info *child = die->child; | |
13942 | ||
e385593e | 13943 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 13944 | { |
325fac50 PA |
13945 | *lowpc = std::min (*lowpc, low); |
13946 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
13947 | } |
13948 | ||
13949 | /* If the language does not allow nested subprograms (either inside | |
13950 | subprograms or lexical blocks), we're done. */ | |
13951 | if (cu->language != language_ada) | |
13952 | return; | |
6e70227d | 13953 | |
b084d499 JB |
13954 | /* Check all the children of the given DIE. If it contains nested |
13955 | subprograms, then check their pc bounds. Likewise, we need to | |
13956 | check lexical blocks as well, as they may also contain subprogram | |
13957 | definitions. */ | |
13958 | while (child && child->tag) | |
13959 | { | |
13960 | if (child->tag == DW_TAG_subprogram | |
13961 | || child->tag == DW_TAG_lexical_block) | |
13962 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
436c571c | 13963 | child = child->sibling; |
b084d499 JB |
13964 | } |
13965 | } | |
13966 | ||
fae299cd DC |
13967 | /* Get the low and high pc's represented by the scope DIE, and store |
13968 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
13969 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
13970 | ||
13971 | static void | |
13972 | get_scope_pc_bounds (struct die_info *die, | |
13973 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
13974 | struct dwarf2_cu *cu) | |
13975 | { | |
13976 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
13977 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
13978 | CORE_ADDR current_low, current_high; | |
13979 | ||
3a2b436a | 13980 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 13981 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
13982 | { |
13983 | best_low = current_low; | |
13984 | best_high = current_high; | |
13985 | } | |
13986 | else | |
13987 | { | |
13988 | struct die_info *child = die->child; | |
13989 | ||
13990 | while (child && child->tag) | |
13991 | { | |
13992 | switch (child->tag) { | |
13993 | case DW_TAG_subprogram: | |
b084d499 | 13994 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
13995 | break; |
13996 | case DW_TAG_namespace: | |
f55ee35c | 13997 | case DW_TAG_module: |
fae299cd DC |
13998 | /* FIXME: carlton/2004-01-16: Should we do this for |
13999 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14000 | that current GCC's always emit the DIEs corresponding | |
14001 | to definitions of methods of classes as children of a | |
14002 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14003 | the DIEs giving the declarations, which could be | |
14004 | anywhere). But I don't see any reason why the | |
14005 | standards says that they have to be there. */ | |
14006 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14007 | ||
14008 | if (current_low != ((CORE_ADDR) -1)) | |
14009 | { | |
325fac50 PA |
14010 | best_low = std::min (best_low, current_low); |
14011 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14012 | } |
14013 | break; | |
14014 | default: | |
0963b4bd | 14015 | /* Ignore. */ |
fae299cd DC |
14016 | break; |
14017 | } | |
14018 | ||
436c571c | 14019 | child = child->sibling; |
fae299cd DC |
14020 | } |
14021 | } | |
14022 | ||
14023 | *lowpc = best_low; | |
14024 | *highpc = best_high; | |
14025 | } | |
14026 | ||
801e3a5b JB |
14027 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14028 | in DIE. */ | |
380bca97 | 14029 | |
801e3a5b JB |
14030 | static void |
14031 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
14032 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
14033 | { | |
518817b3 | 14034 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
08feed99 | 14035 | struct gdbarch *gdbarch = objfile->arch (); |
801e3a5b | 14036 | struct attribute *attr; |
91da1414 | 14037 | struct attribute *attr_high; |
801e3a5b | 14038 | |
91da1414 MW |
14039 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14040 | if (attr_high) | |
801e3a5b | 14041 | { |
801e3a5b | 14042 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14043 | if (attr != nullptr) |
801e3a5b | 14044 | { |
cd6c91b4 TT |
14045 | CORE_ADDR low = attr->value_as_address (); |
14046 | CORE_ADDR high = attr_high->value_as_address (); | |
31aa7e4e | 14047 | |
cd6c91b4 | 14048 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14049 | high += low; |
9a619af0 | 14050 | |
3e29f34a MR |
14051 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14052 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14053 | cu->get_builder ()->record_block_range (block, low, high - 1); |
801e3a5b JB |
14054 | } |
14055 | } | |
14056 | ||
14057 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
435d3d88 | 14058 | if (attr != nullptr) |
801e3a5b | 14059 | { |
18a8505e | 14060 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
14061 | We take advantage of the fact that DW_AT_ranges does not appear |
14062 | in DW_TAG_compile_unit of DWO files. */ | |
14063 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
14064 | |
14065 | /* The value of the DW_AT_ranges attribute is the offset of the | |
14066 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
14067 | unsigned long offset = (DW_UNSND (attr) |
14068 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 14069 | |
2d5f09ec | 14070 | std::vector<blockrange> blockvec; |
5f46c5a5 JK |
14071 | dwarf2_ranges_process (offset, cu, |
14072 | [&] (CORE_ADDR start, CORE_ADDR end) | |
14073 | { | |
58fdfd2c JK |
14074 | start += baseaddr; |
14075 | end += baseaddr; | |
5f46c5a5 JK |
14076 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14077 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14078 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14079 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14080 | }); |
2d5f09ec KB |
14081 | |
14082 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14083 | } |
14084 | } | |
14085 | ||
685b1105 JK |
14086 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14087 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14088 | |
685b1105 JK |
14089 | static void |
14090 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14091 | { |
38360086 | 14092 | int major, minor; |
60d5a603 JK |
14093 | |
14094 | if (cu->producer == NULL) | |
14095 | { | |
14096 | /* For unknown compilers expect their behavior is DWARF version | |
14097 | compliant. | |
14098 | ||
14099 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14100 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14101 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14102 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14103 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14104 | } |
b1ffba5a | 14105 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14106 | { |
38360086 MW |
14107 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14108 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14109 | } |
5230b05a | 14110 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14111 | { |
14112 | cu->producer_is_icc = true; | |
14113 | cu->producer_is_icc_lt_14 = major < 14; | |
14114 | } | |
c258c396 JD |
14115 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14116 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14117 | else |
14118 | { | |
14119 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14120 | compliant. */ | |
60d5a603 JK |
14121 | } |
14122 | ||
9068261f | 14123 | cu->checked_producer = true; |
685b1105 | 14124 | } |
ba919b58 | 14125 | |
685b1105 JK |
14126 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14127 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14128 | during 4.6.0 experimental. */ | |
14129 | ||
9068261f | 14130 | static bool |
685b1105 JK |
14131 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14132 | { | |
14133 | if (!cu->checked_producer) | |
14134 | check_producer (cu); | |
14135 | ||
14136 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14137 | } |
14138 | ||
c258c396 JD |
14139 | |
14140 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14141 | with incorrect is_stmt attributes. */ | |
14142 | ||
14143 | static bool | |
14144 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14145 | { | |
14146 | if (!cu->checked_producer) | |
14147 | check_producer (cu); | |
14148 | ||
14149 | return cu->producer_is_codewarrior; | |
14150 | } | |
14151 | ||
405feb71 | 14152 | /* Return the default accessibility type if it is not overridden by |
60d5a603 JK |
14153 | DW_AT_accessibility. */ |
14154 | ||
14155 | static enum dwarf_access_attribute | |
14156 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14157 | { | |
14158 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14159 | { | |
14160 | /* The default DWARF 2 accessibility for members is public, the default | |
14161 | accessibility for inheritance is private. */ | |
14162 | ||
14163 | if (die->tag != DW_TAG_inheritance) | |
14164 | return DW_ACCESS_public; | |
14165 | else | |
14166 | return DW_ACCESS_private; | |
14167 | } | |
14168 | else | |
14169 | { | |
14170 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14171 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14172 | depends on the container kind. */ | |
14173 | ||
14174 | if (die->parent->tag == DW_TAG_class_type) | |
14175 | return DW_ACCESS_private; | |
14176 | else | |
14177 | return DW_ACCESS_public; | |
14178 | } | |
14179 | } | |
14180 | ||
74ac6d43 TT |
14181 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14182 | offset. If the attribute was not found return 0, otherwise return | |
14183 | 1. If it was found but could not properly be handled, set *OFFSET | |
14184 | to 0. */ | |
14185 | ||
14186 | static int | |
14187 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14188 | LONGEST *offset) | |
14189 | { | |
14190 | struct attribute *attr; | |
14191 | ||
14192 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14193 | if (attr != NULL) | |
14194 | { | |
14195 | *offset = 0; | |
14196 | ||
14197 | /* Note that we do not check for a section offset first here. | |
14198 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14199 | so if we see it, we can assume that a constant form is really | |
14200 | a constant and not a section offset. */ | |
cd6c91b4 | 14201 | if (attr->form_is_constant ()) |
0826b30a | 14202 | *offset = attr->constant_value (0); |
cd6c91b4 | 14203 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 14204 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 14205 | else if (attr->form_is_block ()) |
74ac6d43 TT |
14206 | *offset = decode_locdesc (DW_BLOCK (attr), cu); |
14207 | else | |
14208 | dwarf2_complex_location_expr_complaint (); | |
14209 | ||
14210 | return 1; | |
14211 | } | |
14212 | ||
14213 | return 0; | |
14214 | } | |
14215 | ||
7d79de9a TT |
14216 | /* Look for DW_AT_data_member_location and store the results in FIELD. */ |
14217 | ||
14218 | static void | |
14219 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14220 | struct field *field) | |
14221 | { | |
14222 | struct attribute *attr; | |
14223 | ||
14224 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14225 | if (attr != NULL) | |
14226 | { | |
14227 | if (attr->form_is_constant ()) | |
14228 | { | |
14229 | LONGEST offset = attr->constant_value (0); | |
14230 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14231 | } | |
14232 | else if (attr->form_is_section_offset ()) | |
14233 | dwarf2_complex_location_expr_complaint (); | |
14234 | else if (attr->form_is_block ()) | |
14235 | { | |
14236 | bool handled; | |
14237 | CORE_ADDR offset = decode_locdesc (DW_BLOCK (attr), cu, &handled); | |
14238 | if (handled) | |
14239 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14240 | else | |
14241 | { | |
14242 | struct objfile *objfile | |
14243 | = cu->per_cu->dwarf2_per_objfile->objfile; | |
14244 | struct dwarf2_locexpr_baton *dlbaton | |
14245 | = XOBNEW (&objfile->objfile_obstack, | |
14246 | struct dwarf2_locexpr_baton); | |
14247 | dlbaton->data = DW_BLOCK (attr)->data; | |
14248 | dlbaton->size = DW_BLOCK (attr)->size; | |
14249 | /* When using this baton, we want to compute the address | |
14250 | of the field, not the value. This is why | |
14251 | is_reference is set to false here. */ | |
14252 | dlbaton->is_reference = false; | |
14253 | dlbaton->per_cu = cu->per_cu; | |
14254 | ||
14255 | SET_FIELD_DWARF_BLOCK (*field, dlbaton); | |
14256 | } | |
14257 | } | |
14258 | else | |
14259 | dwarf2_complex_location_expr_complaint (); | |
14260 | } | |
14261 | } | |
14262 | ||
c906108c SS |
14263 | /* Add an aggregate field to the field list. */ |
14264 | ||
14265 | static void | |
107d2387 | 14266 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14267 | struct dwarf2_cu *cu) |
6e70227d | 14268 | { |
518817b3 | 14269 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
08feed99 | 14270 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
14271 | struct nextfield *new_field; |
14272 | struct attribute *attr; | |
14273 | struct field *fp; | |
15d034d0 | 14274 | const char *fieldname = ""; |
c906108c | 14275 | |
7d0ccb61 DJ |
14276 | if (die->tag == DW_TAG_inheritance) |
14277 | { | |
be2daae6 TT |
14278 | fip->baseclasses.emplace_back (); |
14279 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
14280 | } |
14281 | else | |
14282 | { | |
be2daae6 TT |
14283 | fip->fields.emplace_back (); |
14284 | new_field = &fip->fields.back (); | |
7d0ccb61 | 14285 | } |
be2daae6 | 14286 | |
9c6a1327 TT |
14287 | new_field->offset = die->sect_off; |
14288 | ||
e142c38c | 14289 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 14290 | if (attr != nullptr) |
c906108c | 14291 | new_field->accessibility = DW_UNSND (attr); |
60d5a603 JK |
14292 | else |
14293 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
14294 | if (new_field->accessibility != DW_ACCESS_public) |
14295 | fip->non_public_fields = 1; | |
60d5a603 | 14296 | |
e142c38c | 14297 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 14298 | if (attr != nullptr) |
c906108c | 14299 | new_field->virtuality = DW_UNSND (attr); |
60d5a603 JK |
14300 | else |
14301 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
14302 | |
14303 | fp = &new_field->field; | |
a9a9bd0f | 14304 | |
e142c38c | 14305 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 14306 | { |
a9a9bd0f | 14307 | /* Data member other than a C++ static data member. */ |
6e70227d | 14308 | |
c906108c | 14309 | /* Get type of field. */ |
e7c27a73 | 14310 | fp->type = die_type (die, cu); |
c906108c | 14311 | |
d6a843b5 | 14312 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 14313 | |
c906108c | 14314 | /* Get bit size of field (zero if none). */ |
e142c38c | 14315 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 14316 | if (attr != nullptr) |
c906108c SS |
14317 | { |
14318 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
14319 | } | |
14320 | else | |
14321 | { | |
14322 | FIELD_BITSIZE (*fp) = 0; | |
14323 | } | |
14324 | ||
14325 | /* Get bit offset of field. */ | |
7d79de9a | 14326 | handle_data_member_location (die, cu, fp); |
e142c38c | 14327 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
435d3d88 | 14328 | if (attr != nullptr) |
c906108c | 14329 | { |
d5a22e77 | 14330 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
14331 | { |
14332 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
14333 | additional bit offset from the MSB of the containing |
14334 | anonymous object to the MSB of the field. We don't | |
14335 | have to do anything special since we don't need to | |
14336 | know the size of the anonymous object. */ | |
f41f5e61 | 14337 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
14338 | } |
14339 | else | |
14340 | { | |
14341 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
14342 | MSB of the anonymous object, subtract off the number of |
14343 | bits from the MSB of the field to the MSB of the | |
14344 | object, and then subtract off the number of bits of | |
14345 | the field itself. The result is the bit offset of | |
14346 | the LSB of the field. */ | |
c906108c SS |
14347 | int anonymous_size; |
14348 | int bit_offset = DW_UNSND (attr); | |
14349 | ||
e142c38c | 14350 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 14351 | if (attr != nullptr) |
c906108c SS |
14352 | { |
14353 | /* The size of the anonymous object containing | |
14354 | the bit field is explicit, so use the | |
14355 | indicated size (in bytes). */ | |
14356 | anonymous_size = DW_UNSND (attr); | |
14357 | } | |
14358 | else | |
14359 | { | |
14360 | /* The size of the anonymous object containing | |
14361 | the bit field must be inferred from the type | |
14362 | attribute of the data member containing the | |
14363 | bit field. */ | |
14364 | anonymous_size = TYPE_LENGTH (fp->type); | |
14365 | } | |
f41f5e61 PA |
14366 | SET_FIELD_BITPOS (*fp, |
14367 | (FIELD_BITPOS (*fp) | |
14368 | + anonymous_size * bits_per_byte | |
14369 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
14370 | } |
14371 | } | |
da5b30da AA |
14372 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
14373 | if (attr != NULL) | |
14374 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
0826b30a | 14375 | + attr->constant_value (0))); |
c906108c SS |
14376 | |
14377 | /* Get name of field. */ | |
39cbfefa DJ |
14378 | fieldname = dwarf2_name (die, cu); |
14379 | if (fieldname == NULL) | |
14380 | fieldname = ""; | |
d8151005 DJ |
14381 | |
14382 | /* The name is already allocated along with this objfile, so we don't | |
14383 | need to duplicate it for the type. */ | |
14384 | fp->name = fieldname; | |
c906108c SS |
14385 | |
14386 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 14387 | pointer or virtual base class pointer) to private. */ |
e142c38c | 14388 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 14389 | { |
d48cc9dd | 14390 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
14391 | new_field->accessibility = DW_ACCESS_private; |
14392 | fip->non_public_fields = 1; | |
14393 | } | |
14394 | } | |
a9a9bd0f | 14395 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 14396 | { |
a9a9bd0f DC |
14397 | /* C++ static member. */ |
14398 | ||
14399 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
14400 | is a declaration, but all versions of G++ as of this writing | |
14401 | (so through at least 3.2.1) incorrectly generate | |
14402 | DW_TAG_variable tags. */ | |
6e70227d | 14403 | |
ff355380 | 14404 | const char *physname; |
c906108c | 14405 | |
a9a9bd0f | 14406 | /* Get name of field. */ |
39cbfefa DJ |
14407 | fieldname = dwarf2_name (die, cu); |
14408 | if (fieldname == NULL) | |
c906108c SS |
14409 | return; |
14410 | ||
254e6b9e | 14411 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
14412 | if (attr |
14413 | /* Only create a symbol if this is an external value. | |
14414 | new_symbol checks this and puts the value in the global symbol | |
14415 | table, which we want. If it is not external, new_symbol | |
14416 | will try to put the value in cu->list_in_scope which is wrong. */ | |
14417 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
14418 | { |
14419 | /* A static const member, not much different than an enum as far as | |
14420 | we're concerned, except that we can support more types. */ | |
14421 | new_symbol (die, NULL, cu); | |
14422 | } | |
14423 | ||
2df3850c | 14424 | /* Get physical name. */ |
ff355380 | 14425 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 14426 | |
d8151005 DJ |
14427 | /* The name is already allocated along with this objfile, so we don't |
14428 | need to duplicate it for the type. */ | |
14429 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 14430 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 14431 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
14432 | } |
14433 | else if (die->tag == DW_TAG_inheritance) | |
14434 | { | |
74ac6d43 | 14435 | /* C++ base class field. */ |
7d79de9a | 14436 | handle_data_member_location (die, cu, fp); |
c906108c | 14437 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 14438 | FIELD_TYPE (*fp) = die_type (die, cu); |
a737d952 | 14439 | FIELD_NAME (*fp) = TYPE_NAME (fp->type); |
c906108c | 14440 | } |
2ddeaf8a TT |
14441 | else |
14442 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
14443 | } |
14444 | ||
883fd55a KS |
14445 | /* Can the type given by DIE define another type? */ |
14446 | ||
14447 | static bool | |
14448 | type_can_define_types (const struct die_info *die) | |
14449 | { | |
14450 | switch (die->tag) | |
14451 | { | |
14452 | case DW_TAG_typedef: | |
14453 | case DW_TAG_class_type: | |
14454 | case DW_TAG_structure_type: | |
14455 | case DW_TAG_union_type: | |
14456 | case DW_TAG_enumeration_type: | |
14457 | return true; | |
14458 | ||
14459 | default: | |
14460 | return false; | |
14461 | } | |
14462 | } | |
14463 | ||
14464 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
14465 | |
14466 | static void | |
883fd55a KS |
14467 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
14468 | struct dwarf2_cu *cu) | |
6e70227d | 14469 | { |
be2daae6 TT |
14470 | struct decl_field fp; |
14471 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 14472 | |
883fd55a | 14473 | gdb_assert (type_can_define_types (die)); |
98751a41 | 14474 | |
883fd55a | 14475 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
14476 | fp.name = dwarf2_name (die, cu); |
14477 | fp.type = read_type_die (die, cu); | |
98751a41 | 14478 | |
c191a687 KS |
14479 | /* Save accessibility. */ |
14480 | enum dwarf_access_attribute accessibility; | |
14481 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
14482 | if (attr != NULL) | |
14483 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
14484 | else | |
14485 | accessibility = dwarf2_default_access_attribute (die, cu); | |
14486 | switch (accessibility) | |
14487 | { | |
14488 | case DW_ACCESS_public: | |
14489 | /* The assumed value if neither private nor protected. */ | |
14490 | break; | |
14491 | case DW_ACCESS_private: | |
be2daae6 | 14492 | fp.is_private = 1; |
c191a687 KS |
14493 | break; |
14494 | case DW_ACCESS_protected: | |
be2daae6 | 14495 | fp.is_protected = 1; |
c191a687 KS |
14496 | break; |
14497 | default: | |
b98664d3 | 14498 | complaint (_("Unhandled DW_AT_accessibility value (%x)"), accessibility); |
c191a687 KS |
14499 | } |
14500 | ||
883fd55a | 14501 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 14502 | fip->typedef_field_list.push_back (fp); |
883fd55a | 14503 | else |
be2daae6 | 14504 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
14505 | } |
14506 | ||
9c6a1327 TT |
14507 | /* A convenience typedef that's used when finding the discriminant |
14508 | field for a variant part. */ | |
14509 | typedef std::unordered_map<sect_offset, int> offset_map_type; | |
14510 | ||
14511 | /* Compute the discriminant range for a given variant. OBSTACK is | |
14512 | where the results will be stored. VARIANT is the variant to | |
14513 | process. IS_UNSIGNED indicates whether the discriminant is signed | |
14514 | or unsigned. */ | |
14515 | ||
14516 | static const gdb::array_view<discriminant_range> | |
14517 | convert_variant_range (struct obstack *obstack, const variant_field &variant, | |
14518 | bool is_unsigned) | |
14519 | { | |
14520 | std::vector<discriminant_range> ranges; | |
14521 | ||
14522 | if (variant.default_branch) | |
14523 | return {}; | |
14524 | ||
14525 | if (variant.discr_list_data == nullptr) | |
14526 | { | |
14527 | discriminant_range r | |
14528 | = {variant.discriminant_value, variant.discriminant_value}; | |
14529 | ranges.push_back (r); | |
14530 | } | |
14531 | else | |
14532 | { | |
14533 | gdb::array_view<const gdb_byte> data (variant.discr_list_data->data, | |
14534 | variant.discr_list_data->size); | |
14535 | while (!data.empty ()) | |
14536 | { | |
14537 | if (data[0] != DW_DSC_range && data[0] != DW_DSC_label) | |
14538 | { | |
14539 | complaint (_("invalid discriminant marker: %d"), data[0]); | |
14540 | break; | |
14541 | } | |
14542 | bool is_range = data[0] == DW_DSC_range; | |
14543 | data = data.slice (1); | |
14544 | ||
14545 | ULONGEST low, high; | |
14546 | unsigned int bytes_read; | |
14547 | ||
14548 | if (data.empty ()) | |
14549 | { | |
14550 | complaint (_("DW_AT_discr_list missing low value")); | |
14551 | break; | |
14552 | } | |
14553 | if (is_unsigned) | |
14554 | low = read_unsigned_leb128 (nullptr, data.data (), &bytes_read); | |
14555 | else | |
14556 | low = (ULONGEST) read_signed_leb128 (nullptr, data.data (), | |
14557 | &bytes_read); | |
14558 | data = data.slice (bytes_read); | |
14559 | ||
14560 | if (is_range) | |
14561 | { | |
14562 | if (data.empty ()) | |
14563 | { | |
14564 | complaint (_("DW_AT_discr_list missing high value")); | |
14565 | break; | |
14566 | } | |
14567 | if (is_unsigned) | |
14568 | high = read_unsigned_leb128 (nullptr, data.data (), | |
14569 | &bytes_read); | |
14570 | else | |
14571 | high = (LONGEST) read_signed_leb128 (nullptr, data.data (), | |
14572 | &bytes_read); | |
14573 | data = data.slice (bytes_read); | |
14574 | } | |
14575 | else | |
14576 | high = low; | |
14577 | ||
14578 | ranges.push_back ({ low, high }); | |
14579 | } | |
14580 | } | |
14581 | ||
14582 | discriminant_range *result = XOBNEWVEC (obstack, discriminant_range, | |
14583 | ranges.size ()); | |
14584 | std::copy (ranges.begin (), ranges.end (), result); | |
14585 | return gdb::array_view<discriminant_range> (result, ranges.size ()); | |
14586 | } | |
14587 | ||
14588 | static const gdb::array_view<variant_part> create_variant_parts | |
14589 | (struct obstack *obstack, | |
14590 | const offset_map_type &offset_map, | |
14591 | struct field_info *fi, | |
14592 | const std::vector<variant_part_builder> &variant_parts); | |
14593 | ||
14594 | /* Fill in a "struct variant" for a given variant field. RESULT is | |
14595 | the variant to fill in. OBSTACK is where any needed allocations | |
14596 | will be done. OFFSET_MAP holds the mapping from section offsets to | |
14597 | fields for the type. FI describes the fields of the type we're | |
14598 | processing. FIELD is the variant field we're converting. */ | |
14599 | ||
14600 | static void | |
14601 | create_one_variant (variant &result, struct obstack *obstack, | |
14602 | const offset_map_type &offset_map, | |
14603 | struct field_info *fi, const variant_field &field) | |
14604 | { | |
14605 | result.discriminants = convert_variant_range (obstack, field, false); | |
14606 | result.first_field = field.first_field + fi->baseclasses.size (); | |
14607 | result.last_field = field.last_field + fi->baseclasses.size (); | |
14608 | result.parts = create_variant_parts (obstack, offset_map, fi, | |
14609 | field.variant_parts); | |
14610 | } | |
14611 | ||
14612 | /* Fill in a "struct variant_part" for a given variant part. RESULT | |
14613 | is the variant part to fill in. OBSTACK is where any needed | |
14614 | allocations will be done. OFFSET_MAP holds the mapping from | |
14615 | section offsets to fields for the type. FI describes the fields of | |
14616 | the type we're processing. BUILDER is the variant part to be | |
14617 | converted. */ | |
14618 | ||
14619 | static void | |
14620 | create_one_variant_part (variant_part &result, | |
14621 | struct obstack *obstack, | |
14622 | const offset_map_type &offset_map, | |
14623 | struct field_info *fi, | |
14624 | const variant_part_builder &builder) | |
14625 | { | |
14626 | auto iter = offset_map.find (builder.discriminant_offset); | |
14627 | if (iter == offset_map.end ()) | |
14628 | { | |
14629 | result.discriminant_index = -1; | |
14630 | /* Doesn't matter. */ | |
14631 | result.is_unsigned = false; | |
14632 | } | |
14633 | else | |
14634 | { | |
14635 | result.discriminant_index = iter->second; | |
14636 | result.is_unsigned | |
14637 | = TYPE_UNSIGNED (FIELD_TYPE | |
14638 | (fi->fields[result.discriminant_index].field)); | |
14639 | } | |
14640 | ||
14641 | size_t n = builder.variants.size (); | |
14642 | variant *output = new (obstack) variant[n]; | |
14643 | for (size_t i = 0; i < n; ++i) | |
14644 | create_one_variant (output[i], obstack, offset_map, fi, | |
14645 | builder.variants[i]); | |
14646 | ||
14647 | result.variants = gdb::array_view<variant> (output, n); | |
14648 | } | |
14649 | ||
14650 | /* Create a vector of variant parts that can be attached to a type. | |
14651 | OBSTACK is where any needed allocations will be done. OFFSET_MAP | |
14652 | holds the mapping from section offsets to fields for the type. FI | |
14653 | describes the fields of the type we're processing. VARIANT_PARTS | |
14654 | is the vector to convert. */ | |
14655 | ||
14656 | static const gdb::array_view<variant_part> | |
14657 | create_variant_parts (struct obstack *obstack, | |
14658 | const offset_map_type &offset_map, | |
14659 | struct field_info *fi, | |
14660 | const std::vector<variant_part_builder> &variant_parts) | |
14661 | { | |
14662 | if (variant_parts.empty ()) | |
14663 | return {}; | |
14664 | ||
14665 | size_t n = variant_parts.size (); | |
14666 | variant_part *result = new (obstack) variant_part[n]; | |
14667 | for (size_t i = 0; i < n; ++i) | |
14668 | create_one_variant_part (result[i], obstack, offset_map, fi, | |
14669 | variant_parts[i]); | |
14670 | ||
14671 | return gdb::array_view<variant_part> (result, n); | |
14672 | } | |
14673 | ||
14674 | /* Compute the variant part vector for FIP, attaching it to TYPE when | |
14675 | done. */ | |
14676 | ||
14677 | static void | |
14678 | add_variant_property (struct field_info *fip, struct type *type, | |
14679 | struct dwarf2_cu *cu) | |
14680 | { | |
14681 | /* Map section offsets of fields to their field index. Note the | |
14682 | field index here does not take the number of baseclasses into | |
14683 | account. */ | |
14684 | offset_map_type offset_map; | |
14685 | for (int i = 0; i < fip->fields.size (); ++i) | |
14686 | offset_map[fip->fields[i].offset] = i; | |
14687 | ||
14688 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; | |
14689 | gdb::array_view<variant_part> parts | |
14690 | = create_variant_parts (&objfile->objfile_obstack, offset_map, fip, | |
14691 | fip->variant_parts); | |
14692 | ||
14693 | struct dynamic_prop prop; | |
14694 | prop.kind = PROP_VARIANT_PARTS; | |
14695 | prop.data.variant_parts | |
14696 | = ((gdb::array_view<variant_part> *) | |
14697 | obstack_copy (&objfile->objfile_obstack, &parts, sizeof (parts))); | |
14698 | ||
14699 | add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop, type); | |
14700 | } | |
14701 | ||
c906108c SS |
14702 | /* Create the vector of fields, and attach it to the type. */ |
14703 | ||
14704 | static void | |
fba45db2 | 14705 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 14706 | struct dwarf2_cu *cu) |
c906108c | 14707 | { |
317f7127 | 14708 | int nfields = fip->nfields (); |
c906108c SS |
14709 | |
14710 | /* Record the field count, allocate space for the array of fields, | |
14711 | and create blank accessibility bitfields if necessary. */ | |
14712 | TYPE_NFIELDS (type) = nfields; | |
14713 | TYPE_FIELDS (type) = (struct field *) | |
be2daae6 | 14714 | TYPE_ZALLOC (type, sizeof (struct field) * nfields); |
c906108c | 14715 | |
b4ba55a1 | 14716 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
14717 | { |
14718 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
14719 | ||
14720 | TYPE_FIELD_PRIVATE_BITS (type) = | |
14721 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14722 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
14723 | ||
14724 | TYPE_FIELD_PROTECTED_BITS (type) = | |
14725 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14726 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
14727 | ||
774b6a14 TT |
14728 | TYPE_FIELD_IGNORE_BITS (type) = |
14729 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14730 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
14731 | } |
14732 | ||
14733 | /* If the type has baseclasses, allocate and clear a bit vector for | |
14734 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 14735 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 14736 | { |
be2daae6 | 14737 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 14738 | unsigned char *pointer; |
c906108c SS |
14739 | |
14740 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 14741 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 14742 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
14743 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
14744 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
14745 | } |
14746 | ||
9c6a1327 TT |
14747 | if (!fip->variant_parts.empty ()) |
14748 | add_variant_property (fip, type, cu); | |
2ddeaf8a | 14749 | |
be2daae6 TT |
14750 | /* Copy the saved-up fields into the field vector. */ |
14751 | for (int i = 0; i < nfields; ++i) | |
c906108c | 14752 | { |
be2daae6 TT |
14753 | struct nextfield &field |
14754 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
14755 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 14756 | |
be2daae6 TT |
14757 | TYPE_FIELD (type, i) = field.field; |
14758 | switch (field.accessibility) | |
c906108c | 14759 | { |
c5aa993b | 14760 | case DW_ACCESS_private: |
b4ba55a1 | 14761 | if (cu->language != language_ada) |
be2daae6 | 14762 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 14763 | break; |
c906108c | 14764 | |
c5aa993b | 14765 | case DW_ACCESS_protected: |
b4ba55a1 | 14766 | if (cu->language != language_ada) |
be2daae6 | 14767 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 14768 | break; |
c906108c | 14769 | |
c5aa993b JM |
14770 | case DW_ACCESS_public: |
14771 | break; | |
c906108c | 14772 | |
c5aa993b JM |
14773 | default: |
14774 | /* Unknown accessibility. Complain and treat it as public. */ | |
14775 | { | |
b98664d3 | 14776 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 14777 | field.accessibility); |
c5aa993b JM |
14778 | } |
14779 | break; | |
c906108c | 14780 | } |
be2daae6 | 14781 | if (i < fip->baseclasses.size ()) |
c906108c | 14782 | { |
be2daae6 | 14783 | switch (field.virtuality) |
c906108c | 14784 | { |
c5aa993b JM |
14785 | case DW_VIRTUALITY_virtual: |
14786 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 14787 | if (cu->language == language_ada) |
a73c6dcd | 14788 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 14789 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 14790 | break; |
c906108c SS |
14791 | } |
14792 | } | |
c906108c SS |
14793 | } |
14794 | } | |
14795 | ||
7d27a96d TT |
14796 | /* Return true if this member function is a constructor, false |
14797 | otherwise. */ | |
14798 | ||
14799 | static int | |
14800 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
14801 | { | |
14802 | const char *fieldname; | |
fe978cb0 | 14803 | const char *type_name; |
7d27a96d TT |
14804 | int len; |
14805 | ||
14806 | if (die->parent == NULL) | |
14807 | return 0; | |
14808 | ||
14809 | if (die->parent->tag != DW_TAG_structure_type | |
14810 | && die->parent->tag != DW_TAG_union_type | |
14811 | && die->parent->tag != DW_TAG_class_type) | |
14812 | return 0; | |
14813 | ||
14814 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
14815 | type_name = dwarf2_name (die->parent, cu); |
14816 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
14817 | return 0; |
14818 | ||
14819 | len = strlen (fieldname); | |
fe978cb0 PA |
14820 | return (strncmp (fieldname, type_name, len) == 0 |
14821 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
14822 | } |
14823 | ||
e35000a7 TBA |
14824 | /* Check if the given VALUE is a recognized enum |
14825 | dwarf_defaulted_attribute constant according to DWARF5 spec, | |
14826 | Table 7.24. */ | |
14827 | ||
14828 | static bool | |
14829 | is_valid_DW_AT_defaulted (ULONGEST value) | |
14830 | { | |
14831 | switch (value) | |
14832 | { | |
14833 | case DW_DEFAULTED_no: | |
14834 | case DW_DEFAULTED_in_class: | |
14835 | case DW_DEFAULTED_out_of_class: | |
14836 | return true; | |
14837 | } | |
14838 | ||
3142e908 | 14839 | complaint (_("unrecognized DW_AT_defaulted value (%s)"), pulongest (value)); |
e35000a7 TBA |
14840 | return false; |
14841 | } | |
14842 | ||
c906108c SS |
14843 | /* Add a member function to the proper fieldlist. */ |
14844 | ||
14845 | static void | |
107d2387 | 14846 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14847 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 14848 | { |
518817b3 | 14849 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 14850 | struct attribute *attr; |
c906108c | 14851 | int i; |
be2daae6 | 14852 | struct fnfieldlist *flp = nullptr; |
c906108c | 14853 | struct fn_field *fnp; |
15d034d0 | 14854 | const char *fieldname; |
f792889a | 14855 | struct type *this_type; |
60d5a603 | 14856 | enum dwarf_access_attribute accessibility; |
c906108c | 14857 | |
b4ba55a1 | 14858 | if (cu->language == language_ada) |
a73c6dcd | 14859 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 14860 | |
2df3850c | 14861 | /* Get name of member function. */ |
39cbfefa DJ |
14862 | fieldname = dwarf2_name (die, cu); |
14863 | if (fieldname == NULL) | |
2df3850c | 14864 | return; |
c906108c | 14865 | |
c906108c | 14866 | /* Look up member function name in fieldlist. */ |
be2daae6 | 14867 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 14868 | { |
27bfe10e | 14869 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
14870 | { |
14871 | flp = &fip->fnfieldlists[i]; | |
14872 | break; | |
14873 | } | |
c906108c SS |
14874 | } |
14875 | ||
be2daae6 TT |
14876 | /* Create a new fnfieldlist if necessary. */ |
14877 | if (flp == nullptr) | |
c906108c | 14878 | { |
be2daae6 TT |
14879 | fip->fnfieldlists.emplace_back (); |
14880 | flp = &fip->fnfieldlists.back (); | |
c906108c | 14881 | flp->name = fieldname; |
be2daae6 | 14882 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
14883 | } |
14884 | ||
be2daae6 TT |
14885 | /* Create a new member function field and add it to the vector of |
14886 | fnfieldlists. */ | |
14887 | flp->fnfields.emplace_back (); | |
14888 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
14889 | |
14890 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 14891 | if (cu->language == language_cplus) |
be2daae6 TT |
14892 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
14893 | die, cu); | |
3da10d80 KS |
14894 | else |
14895 | { | |
1d06ead6 | 14896 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
14897 | fnp->physname = physname ? physname : ""; |
14898 | } | |
14899 | ||
c906108c | 14900 | fnp->type = alloc_type (objfile); |
f792889a DJ |
14901 | this_type = read_type_die (die, cu); |
14902 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 14903 | { |
f792889a | 14904 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 14905 | |
f792889a | 14906 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
14907 | of the method itself (TYPE_CODE_METHOD). */ |
14908 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
14909 | TYPE_TARGET_TYPE (this_type), |
14910 | TYPE_FIELDS (this_type), | |
14911 | TYPE_NFIELDS (this_type), | |
14912 | TYPE_VARARGS (this_type)); | |
c906108c SS |
14913 | |
14914 | /* Handle static member functions. | |
c5aa993b | 14915 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
14916 | member functions. G++ helps GDB by marking the first |
14917 | parameter for non-static member functions (which is the this | |
14918 | pointer) as artificial. We obtain this information from | |
14919 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 14920 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
14921 | fnp->voffset = VOFFSET_STATIC; |
14922 | } | |
14923 | else | |
b98664d3 | 14924 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 14925 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
14926 | |
14927 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 14928 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 14929 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 14930 | |
3e43a32a MS |
14931 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
14932 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
14933 | |
14934 | /* Get accessibility. */ | |
e142c38c | 14935 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 14936 | if (attr != nullptr) |
aead7601 | 14937 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
14938 | else |
14939 | accessibility = dwarf2_default_access_attribute (die, cu); | |
14940 | switch (accessibility) | |
c906108c | 14941 | { |
60d5a603 JK |
14942 | case DW_ACCESS_private: |
14943 | fnp->is_private = 1; | |
14944 | break; | |
14945 | case DW_ACCESS_protected: | |
14946 | fnp->is_protected = 1; | |
14947 | break; | |
c906108c SS |
14948 | } |
14949 | ||
b02dede2 | 14950 | /* Check for artificial methods. */ |
e142c38c | 14951 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
14952 | if (attr && DW_UNSND (attr) != 0) |
14953 | fnp->is_artificial = 1; | |
14954 | ||
e35000a7 TBA |
14955 | /* Check for defaulted methods. */ |
14956 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
14957 | if (attr != nullptr && is_valid_DW_AT_defaulted (DW_UNSND (attr))) | |
14958 | fnp->defaulted = (enum dwarf_defaulted_attribute) DW_UNSND (attr); | |
14959 | ||
14960 | /* Check for deleted methods. */ | |
14961 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
14962 | if (attr != nullptr && DW_UNSND (attr) != 0) | |
14963 | fnp->is_deleted = 1; | |
14964 | ||
7d27a96d TT |
14965 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
14966 | ||
0d564a31 | 14967 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
14968 | function. For older versions of GCC, this is an offset in the |
14969 | appropriate virtual table, as specified by DW_AT_containing_type. | |
14970 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
14971 | to the object address. */ |
14972 | ||
e142c38c | 14973 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 14974 | if (attr != nullptr) |
8e19ed76 | 14975 | { |
4fc6c0d5 | 14976 | if (attr->form_is_block () && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 14977 | { |
aec5aa8b TT |
14978 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
14979 | { | |
14980 | /* Old-style GCC. */ | |
14981 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
14982 | } | |
14983 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
14984 | || (DW_BLOCK (attr)->size > 1 | |
14985 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
14986 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
14987 | { | |
aec5aa8b TT |
14988 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
14989 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
14990 | dwarf2_complex_location_expr_complaint (); | |
14991 | else | |
14992 | fnp->voffset /= cu->header.addr_size; | |
14993 | fnp->voffset += 2; | |
14994 | } | |
14995 | else | |
14996 | dwarf2_complex_location_expr_complaint (); | |
14997 | ||
14998 | if (!fnp->fcontext) | |
7e993ebf KS |
14999 | { |
15000 | /* If there is no `this' field and no DW_AT_containing_type, | |
15001 | we cannot actually find a base class context for the | |
15002 | vtable! */ | |
15003 | if (TYPE_NFIELDS (this_type) == 0 | |
15004 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
15005 | { | |
b98664d3 | 15006 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15007 | "function \"%s\" (offset %s)"), |
15008 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15009 | } |
15010 | else | |
15011 | { | |
15012 | fnp->fcontext | |
15013 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
15014 | } | |
15015 | } | |
aec5aa8b | 15016 | } |
cd6c91b4 | 15017 | else if (attr->form_is_section_offset ()) |
8e19ed76 | 15018 | { |
4d3c2250 | 15019 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15020 | } |
15021 | else | |
15022 | { | |
4d3c2250 KB |
15023 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15024 | fieldname); | |
8e19ed76 | 15025 | } |
0d564a31 | 15026 | } |
d48cc9dd DJ |
15027 | else |
15028 | { | |
15029 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
15030 | if (attr && DW_UNSND (attr)) | |
15031 | { | |
15032 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15033 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15034 | "but the vtable offset is not specified"), |
9d8780f0 | 15035 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15036 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15037 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15038 | } | |
15039 | } | |
c906108c SS |
15040 | } |
15041 | ||
15042 | /* Create the vector of member function fields, and attach it to the type. */ | |
15043 | ||
15044 | static void | |
fba45db2 | 15045 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15046 | struct dwarf2_cu *cu) |
c906108c | 15047 | { |
b4ba55a1 | 15048 | if (cu->language == language_ada) |
a73c6dcd | 15049 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15050 | |
c906108c SS |
15051 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15052 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15053 | TYPE_ALLOC (type, |
15054 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15055 | |
be2daae6 | 15056 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15057 | { |
be2daae6 | 15058 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15059 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15060 | |
be2daae6 TT |
15061 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15062 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15063 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15064 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15065 | ||
15066 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15067 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15068 | } |
15069 | ||
be2daae6 | 15070 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15071 | } |
15072 | ||
1168df01 JB |
15073 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15074 | language, zero otherwise. */ | |
15075 | static int | |
15076 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15077 | { | |
15078 | static const char vptr[] = "_vptr"; | |
15079 | ||
9c37b5ae TT |
15080 | /* Look for the C++ form of the vtable. */ |
15081 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15082 | return 1; |
15083 | ||
15084 | return 0; | |
15085 | } | |
15086 | ||
c0dd20ea | 15087 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15088 | functions, with the ABI-specified layout. If TYPE describes |
15089 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15090 | |
15091 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15092 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15093 | |
0b92b5bb TT |
15094 | static void |
15095 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15096 | { |
09e2d7c7 | 15097 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15098 | |
15099 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
15100 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
15101 | return; | |
c0dd20ea DJ |
15102 | |
15103 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15104 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15105 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15106 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15107 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15108 | return; | |
c0dd20ea DJ |
15109 | |
15110 | /* Find the type of the method. */ | |
0b92b5bb | 15111 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
15112 | if (pfn_type == NULL |
15113 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
15114 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 15115 | return; |
c0dd20ea DJ |
15116 | |
15117 | /* Look for the "this" argument. */ | |
15118 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
15119 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 15120 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 15121 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 15122 | return; |
c0dd20ea | 15123 | |
09e2d7c7 | 15124 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 15125 | new_type = alloc_type (objfile); |
09e2d7c7 | 15126 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
15127 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
15128 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 15129 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15130 | } |
1168df01 | 15131 | |
2b4424c3 TT |
15132 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15133 | appropriate error checking and issuing complaints if there is a | |
15134 | problem. */ | |
15135 | ||
15136 | static ULONGEST | |
15137 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15138 | { | |
15139 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15140 | ||
15141 | if (attr == nullptr) | |
15142 | return 0; | |
15143 | ||
cd6c91b4 | 15144 | if (!attr->form_is_constant ()) |
2b4424c3 | 15145 | { |
b98664d3 | 15146 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15147 | " - DIE at %s [in module %s]"), |
15148 | sect_offset_str (die->sect_off), | |
15149 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15150 | return 0; | |
15151 | } | |
15152 | ||
15153 | ULONGEST align; | |
15154 | if (attr->form == DW_FORM_sdata) | |
15155 | { | |
15156 | LONGEST val = DW_SND (attr); | |
15157 | if (val < 0) | |
15158 | { | |
b98664d3 | 15159 | complaint (_("DW_AT_alignment value must not be negative" |
2b4424c3 TT |
15160 | " - DIE at %s [in module %s]"), |
15161 | sect_offset_str (die->sect_off), | |
15162 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15163 | return 0; | |
15164 | } | |
15165 | align = val; | |
15166 | } | |
15167 | else | |
15168 | align = DW_UNSND (attr); | |
15169 | ||
15170 | if (align == 0) | |
15171 | { | |
b98664d3 | 15172 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15173 | " - DIE at %s [in module %s]"), |
15174 | sect_offset_str (die->sect_off), | |
15175 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15176 | return 0; | |
15177 | } | |
15178 | if ((align & (align - 1)) != 0) | |
15179 | { | |
b98664d3 | 15180 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 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 | return 0; | |
15185 | } | |
15186 | ||
15187 | return align; | |
15188 | } | |
15189 | ||
15190 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15191 | the alignment for TYPE. */ | |
15192 | ||
15193 | static void | |
15194 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15195 | struct type *type) | |
15196 | { | |
15197 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15198 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15199 | " - DIE at %s [in module %s]"), |
15200 | sect_offset_str (die->sect_off), | |
15201 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15202 | } | |
685b1105 | 15203 | |
e35000a7 TBA |
15204 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15205 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
15206 | ||
15207 | static bool | |
15208 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
15209 | { | |
15210 | switch (value) | |
15211 | { | |
15212 | case DW_CC_normal: | |
15213 | case DW_CC_pass_by_reference: | |
15214 | case DW_CC_pass_by_value: | |
15215 | return true; | |
15216 | ||
15217 | default: | |
15218 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15219 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
15220 | return false; |
15221 | } | |
15222 | } | |
15223 | ||
d0922fcf TBA |
15224 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15225 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
15226 | also according to GNU-specific values (see include/dwarf2.h). */ | |
15227 | ||
15228 | static bool | |
15229 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
15230 | { | |
15231 | switch (value) | |
15232 | { | |
15233 | case DW_CC_normal: | |
15234 | case DW_CC_program: | |
15235 | case DW_CC_nocall: | |
15236 | return true; | |
15237 | ||
15238 | case DW_CC_GNU_renesas_sh: | |
15239 | case DW_CC_GNU_borland_fastcall_i386: | |
15240 | case DW_CC_GDB_IBM_OpenCL: | |
15241 | return true; | |
15242 | ||
15243 | default: | |
15244 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15245 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
15246 | return false; |
15247 | } | |
15248 | } | |
15249 | ||
c906108c | 15250 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15251 | (definition) to create a type for the structure or union. Fill in |
15252 | the type's name and general properties; the members will not be | |
83655187 DE |
15253 | processed until process_structure_scope. A symbol table entry for |
15254 | the type will also not be done until process_structure_scope (assuming | |
15255 | the type has a name). | |
c906108c | 15256 | |
c767944b DJ |
15257 | NOTE: we need to call these functions regardless of whether or not the |
15258 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15259 | structure or union. This gets the type entered into our set of |
83655187 | 15260 | user defined types. */ |
c906108c | 15261 | |
f792889a | 15262 | static struct type * |
134d01f1 | 15263 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15264 | { |
518817b3 | 15265 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
15266 | struct type *type; |
15267 | struct attribute *attr; | |
15d034d0 | 15268 | const char *name; |
c906108c | 15269 | |
348e048f DE |
15270 | /* If the definition of this type lives in .debug_types, read that type. |
15271 | Don't follow DW_AT_specification though, that will take us back up | |
15272 | the chain and we want to go down. */ | |
052c8bb8 | 15273 | attr = die->attr (DW_AT_signature); |
435d3d88 | 15274 | if (attr != nullptr) |
348e048f | 15275 | { |
ac9ec31b | 15276 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15277 | |
ac9ec31b | 15278 | /* The type's CU may not be the same as CU. |
02142a6c | 15279 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15280 | return set_die_type (die, type, cu); |
15281 | } | |
15282 | ||
c0dd20ea | 15283 | type = alloc_type (objfile); |
c906108c | 15284 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15285 | |
39cbfefa DJ |
15286 | name = dwarf2_name (die, cu); |
15287 | if (name != NULL) | |
c906108c | 15288 | { |
987504bb | 15289 | if (cu->language == language_cplus |
c44af4eb TT |
15290 | || cu->language == language_d |
15291 | || cu->language == language_rust) | |
63d06c5c | 15292 | { |
15d034d0 | 15293 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15294 | |
15295 | /* dwarf2_full_name might have already finished building the DIE's | |
15296 | type. If so, there is no need to continue. */ | |
15297 | if (get_die_type (die, cu) != NULL) | |
15298 | return get_die_type (die, cu); | |
15299 | ||
e86ca25f | 15300 | TYPE_NAME (type) = full_name; |
63d06c5c DC |
15301 | } |
15302 | else | |
15303 | { | |
d8151005 DJ |
15304 | /* The name is already allocated along with this objfile, so |
15305 | we don't need to duplicate it for the type. */ | |
e86ca25f | 15306 | TYPE_NAME (type) = name; |
63d06c5c | 15307 | } |
c906108c SS |
15308 | } |
15309 | ||
15310 | if (die->tag == DW_TAG_structure_type) | |
15311 | { | |
15312 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
15313 | } | |
15314 | else if (die->tag == DW_TAG_union_type) | |
15315 | { | |
15316 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15317 | } | |
15318 | else | |
15319 | { | |
4753d33b | 15320 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
15321 | } |
15322 | ||
0cc2414c TT |
15323 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
15324 | TYPE_DECLARED_CLASS (type) = 1; | |
15325 | ||
e35000a7 TBA |
15326 | /* Store the calling convention in the type if it's available in |
15327 | the die. Otherwise the calling convention remains set to | |
15328 | the default value DW_CC_normal. */ | |
15329 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
15330 | if (attr != nullptr | |
15331 | && is_valid_DW_AT_calling_convention_for_type (DW_UNSND (attr))) | |
15332 | { | |
15333 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15334 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
15335 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
15336 | } | |
15337 | ||
e142c38c | 15338 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15339 | if (attr != nullptr) |
c906108c | 15340 | { |
cd6c91b4 | 15341 | if (attr->form_is_constant ()) |
155bfbd3 JB |
15342 | TYPE_LENGTH (type) = DW_UNSND (attr); |
15343 | else | |
15344 | { | |
f8e89861 TT |
15345 | struct dynamic_prop prop; |
15346 | if (attr_to_dynamic_prop (attr, die, cu, &prop, | |
15347 | cu->per_cu->addr_type ())) | |
15348 | add_dyn_prop (DYN_PROP_BYTE_SIZE, prop, type); | |
155bfbd3 JB |
15349 | TYPE_LENGTH (type) = 0; |
15350 | } | |
c906108c SS |
15351 | } |
15352 | else | |
15353 | { | |
15354 | TYPE_LENGTH (type) = 0; | |
15355 | } | |
15356 | ||
2b4424c3 TT |
15357 | maybe_set_alignment (cu, die, type); |
15358 | ||
5230b05a | 15359 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15360 | { |
5230b05a WT |
15361 | /* ICC<14 does not output the required DW_AT_declaration on |
15362 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15363 | TYPE_STUB (type) = 1; |
685b1105 JK |
15364 | } |
15365 | else | |
15366 | TYPE_STUB_SUPPORTED (type) = 1; | |
15367 | ||
dc718098 | 15368 | if (die_is_declaration (die, cu)) |
876cecd0 | 15369 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15370 | else if (attr == NULL && die->child == NULL |
15371 | && producer_is_realview (cu->producer)) | |
15372 | /* RealView does not output the required DW_AT_declaration | |
15373 | on incomplete types. */ | |
15374 | TYPE_STUB (type) = 1; | |
dc718098 | 15375 | |
c906108c SS |
15376 | /* We need to add the type field to the die immediately so we don't |
15377 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15378 | type within the structure itself. */ |
1c379e20 | 15379 | set_die_type (die, type, cu); |
c906108c | 15380 | |
7e314c57 JK |
15381 | /* set_die_type should be already done. */ |
15382 | set_descriptive_type (type, die, cu); | |
15383 | ||
c767944b DJ |
15384 | return type; |
15385 | } | |
15386 | ||
9c6a1327 TT |
15387 | static void handle_struct_member_die |
15388 | (struct die_info *child_die, | |
15389 | struct type *type, | |
15390 | struct field_info *fi, | |
15391 | std::vector<struct symbol *> *template_args, | |
15392 | struct dwarf2_cu *cu); | |
15393 | ||
15394 | /* A helper for handle_struct_member_die that handles | |
15395 | DW_TAG_variant_part. */ | |
15396 | ||
15397 | static void | |
15398 | handle_variant_part (struct die_info *die, struct type *type, | |
15399 | struct field_info *fi, | |
15400 | std::vector<struct symbol *> *template_args, | |
15401 | struct dwarf2_cu *cu) | |
15402 | { | |
15403 | variant_part_builder *new_part; | |
15404 | if (fi->current_variant_part == nullptr) | |
15405 | { | |
15406 | fi->variant_parts.emplace_back (); | |
15407 | new_part = &fi->variant_parts.back (); | |
15408 | } | |
15409 | else if (!fi->current_variant_part->processing_variant) | |
15410 | { | |
15411 | complaint (_("nested DW_TAG_variant_part seen " | |
15412 | "- DIE at %s [in module %s]"), | |
15413 | sect_offset_str (die->sect_off), | |
15414 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15415 | return; | |
15416 | } | |
15417 | else | |
15418 | { | |
15419 | variant_field ¤t = fi->current_variant_part->variants.back (); | |
15420 | current.variant_parts.emplace_back (); | |
15421 | new_part = ¤t.variant_parts.back (); | |
15422 | } | |
15423 | ||
15424 | /* When we recurse, we want callees to add to this new variant | |
15425 | part. */ | |
15426 | scoped_restore save_current_variant_part | |
15427 | = make_scoped_restore (&fi->current_variant_part, new_part); | |
15428 | ||
15429 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
15430 | if (discr == NULL) | |
15431 | { | |
15432 | /* It's a univariant form, an extension we support. */ | |
15433 | } | |
15434 | else if (discr->form_is_ref ()) | |
15435 | { | |
15436 | struct dwarf2_cu *target_cu = cu; | |
15437 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
15438 | ||
15439 | new_part->discriminant_offset = target_die->sect_off; | |
15440 | } | |
15441 | else | |
15442 | { | |
15443 | complaint (_("DW_AT_discr does not have DIE reference form" | |
15444 | " - DIE at %s [in module %s]"), | |
15445 | sect_offset_str (die->sect_off), | |
15446 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15447 | } | |
15448 | ||
15449 | for (die_info *child_die = die->child; | |
15450 | child_die != NULL; | |
15451 | child_die = child_die->sibling) | |
15452 | handle_struct_member_die (child_die, type, fi, template_args, cu); | |
15453 | } | |
15454 | ||
15455 | /* A helper for handle_struct_member_die that handles | |
15456 | DW_TAG_variant. */ | |
15457 | ||
15458 | static void | |
15459 | handle_variant (struct die_info *die, struct type *type, | |
15460 | struct field_info *fi, | |
15461 | std::vector<struct symbol *> *template_args, | |
15462 | struct dwarf2_cu *cu) | |
15463 | { | |
15464 | if (fi->current_variant_part == nullptr) | |
15465 | { | |
15466 | complaint (_("saw DW_TAG_variant outside DW_TAG_variant_part " | |
15467 | "- DIE at %s [in module %s]"), | |
15468 | sect_offset_str (die->sect_off), | |
15469 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15470 | return; | |
15471 | } | |
15472 | if (fi->current_variant_part->processing_variant) | |
15473 | { | |
15474 | complaint (_("nested DW_TAG_variant seen " | |
15475 | "- DIE at %s [in module %s]"), | |
15476 | sect_offset_str (die->sect_off), | |
15477 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15478 | return; | |
15479 | } | |
15480 | ||
15481 | scoped_restore save_processing_variant | |
15482 | = make_scoped_restore (&fi->current_variant_part->processing_variant, | |
15483 | true); | |
15484 | ||
15485 | fi->current_variant_part->variants.emplace_back (); | |
15486 | variant_field &variant = fi->current_variant_part->variants.back (); | |
15487 | variant.first_field = fi->fields.size (); | |
15488 | ||
15489 | /* In a variant we want to get the discriminant and also add a | |
15490 | field for our sole member child. */ | |
15491 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr_value, cu); | |
15492 | if (discr == nullptr) | |
15493 | { | |
15494 | discr = dwarf2_attr (die, DW_AT_discr_list, cu); | |
15495 | if (discr == nullptr || DW_BLOCK (discr)->size == 0) | |
15496 | variant.default_branch = true; | |
15497 | else | |
15498 | variant.discr_list_data = DW_BLOCK (discr); | |
15499 | } | |
15500 | else | |
15501 | variant.discriminant_value = DW_UNSND (discr); | |
15502 | ||
15503 | for (die_info *variant_child = die->child; | |
15504 | variant_child != NULL; | |
15505 | variant_child = variant_child->sibling) | |
15506 | handle_struct_member_die (variant_child, type, fi, template_args, cu); | |
15507 | ||
15508 | variant.last_field = fi->fields.size (); | |
15509 | } | |
15510 | ||
2ddeaf8a TT |
15511 | /* A helper for process_structure_scope that handles a single member |
15512 | DIE. */ | |
15513 | ||
15514 | static void | |
15515 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15516 | struct field_info *fi, | |
15517 | std::vector<struct symbol *> *template_args, | |
15518 | struct dwarf2_cu *cu) | |
15519 | { | |
15520 | if (child_die->tag == DW_TAG_member | |
9c6a1327 | 15521 | || child_die->tag == DW_TAG_variable) |
2ddeaf8a TT |
15522 | { |
15523 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15524 | should be a DW_TAG_member that is a declaration, but | |
15525 | all versions of G++ as of this writing (so through at | |
15526 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15527 | tags for them instead. */ | |
15528 | dwarf2_add_field (fi, child_die, cu); | |
15529 | } | |
15530 | else if (child_die->tag == DW_TAG_subprogram) | |
15531 | { | |
15532 | /* Rust doesn't have member functions in the C++ sense. | |
15533 | However, it does emit ordinary functions as children | |
15534 | of a struct DIE. */ | |
15535 | if (cu->language == language_rust) | |
15536 | read_func_scope (child_die, cu); | |
15537 | else | |
15538 | { | |
15539 | /* C++ member function. */ | |
15540 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
15541 | } | |
15542 | } | |
15543 | else if (child_die->tag == DW_TAG_inheritance) | |
15544 | { | |
15545 | /* C++ base class field. */ | |
15546 | dwarf2_add_field (fi, child_die, cu); | |
15547 | } | |
15548 | else if (type_can_define_types (child_die)) | |
15549 | dwarf2_add_type_defn (fi, child_die, cu); | |
15550 | else if (child_die->tag == DW_TAG_template_type_param | |
15551 | || child_die->tag == DW_TAG_template_value_param) | |
15552 | { | |
15553 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15554 | ||
15555 | if (arg != NULL) | |
15556 | template_args->push_back (arg); | |
15557 | } | |
9c6a1327 TT |
15558 | else if (child_die->tag == DW_TAG_variant_part) |
15559 | handle_variant_part (child_die, type, fi, template_args, cu); | |
2ddeaf8a | 15560 | else if (child_die->tag == DW_TAG_variant) |
9c6a1327 | 15561 | handle_variant (child_die, type, fi, template_args, cu); |
2ddeaf8a TT |
15562 | } |
15563 | ||
c767944b DJ |
15564 | /* Finish creating a structure or union type, including filling in |
15565 | its members and creating a symbol for it. */ | |
15566 | ||
15567 | static void | |
15568 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15569 | { | |
518817b3 | 15570 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
ca040673 | 15571 | struct die_info *child_die; |
c767944b DJ |
15572 | struct type *type; |
15573 | ||
15574 | type = get_die_type (die, cu); | |
15575 | if (type == NULL) | |
15576 | type = read_structure_type (die, cu); | |
15577 | ||
3e1d3d8c | 15578 | bool has_template_parameters = false; |
e142c38c | 15579 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
15580 | { |
15581 | struct field_info fi; | |
2f4732b0 | 15582 | std::vector<struct symbol *> template_args; |
c906108c | 15583 | |
639d11d3 | 15584 | child_die = die->child; |
c906108c SS |
15585 | |
15586 | while (child_die && child_die->tag) | |
15587 | { | |
2ddeaf8a | 15588 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
436c571c | 15589 | child_die = child_die->sibling; |
c906108c SS |
15590 | } |
15591 | ||
34eaf542 | 15592 | /* Attach template arguments to type. */ |
2f4732b0 | 15593 | if (!template_args.empty ()) |
34eaf542 | 15594 | { |
3e1d3d8c | 15595 | has_template_parameters = true; |
34eaf542 | 15596 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 15597 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 15598 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
15599 | = XOBNEWVEC (&objfile->objfile_obstack, |
15600 | struct symbol *, | |
15601 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 15602 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 15603 | template_args.data (), |
34eaf542 TT |
15604 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
15605 | * sizeof (struct symbol *))); | |
34eaf542 TT |
15606 | } |
15607 | ||
c906108c | 15608 | /* Attach fields and member functions to the type. */ |
317f7127 | 15609 | if (fi.nfields () > 0) |
e7c27a73 | 15610 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 15611 | if (!fi.fnfieldlists.empty ()) |
c906108c | 15612 | { |
e7c27a73 | 15613 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 15614 | |
c5aa993b | 15615 | /* Get the type which refers to the base class (possibly this |
c906108c | 15616 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
15617 | class from the DW_AT_containing_type attribute. This use of |
15618 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 15619 | |
e142c38c | 15620 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 15621 | { |
e7c27a73 | 15622 | struct type *t = die_containing_type (die, cu); |
c906108c | 15623 | |
ae6ae975 | 15624 | set_type_vptr_basetype (type, t); |
c906108c SS |
15625 | if (type == t) |
15626 | { | |
c906108c SS |
15627 | int i; |
15628 | ||
15629 | /* Our own class provides vtbl ptr. */ | |
15630 | for (i = TYPE_NFIELDS (t) - 1; | |
15631 | i >= TYPE_N_BASECLASSES (t); | |
15632 | --i) | |
15633 | { | |
0d5cff50 | 15634 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 15635 | |
1168df01 | 15636 | if (is_vtable_name (fieldname, cu)) |
c906108c | 15637 | { |
ae6ae975 | 15638 | set_type_vptr_fieldno (type, i); |
c906108c SS |
15639 | break; |
15640 | } | |
15641 | } | |
15642 | ||
15643 | /* Complain if virtual function table field not found. */ | |
15644 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 15645 | complaint (_("virtual function table pointer " |
3e43a32a | 15646 | "not found when defining class '%s'"), |
e86ca25f | 15647 | TYPE_NAME (type) ? TYPE_NAME (type) : ""); |
c906108c SS |
15648 | } |
15649 | else | |
15650 | { | |
ae6ae975 | 15651 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
15652 | } |
15653 | } | |
f6235d4c | 15654 | else if (cu->producer |
61012eef | 15655 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
15656 | { |
15657 | /* The IBM XLC compiler does not provide direct indication | |
15658 | of the containing type, but the vtable pointer is | |
15659 | always named __vfp. */ | |
15660 | ||
15661 | int i; | |
15662 | ||
15663 | for (i = TYPE_NFIELDS (type) - 1; | |
15664 | i >= TYPE_N_BASECLASSES (type); | |
15665 | --i) | |
15666 | { | |
15667 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
15668 | { | |
ae6ae975 DE |
15669 | set_type_vptr_fieldno (type, i); |
15670 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
15671 | break; |
15672 | } | |
15673 | } | |
15674 | } | |
c906108c | 15675 | } |
98751a41 JK |
15676 | |
15677 | /* Copy fi.typedef_field_list linked list elements content into the | |
15678 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 15679 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 15680 | { |
be2daae6 | 15681 | int count = fi.typedef_field_list.size (); |
98751a41 | 15682 | |
a0d7a4ff | 15683 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 15684 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 15685 | = ((struct decl_field *) |
be2daae6 TT |
15686 | TYPE_ALLOC (type, |
15687 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
15688 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 15689 | |
be2daae6 TT |
15690 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
15691 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 15692 | } |
c767944b | 15693 | |
883fd55a KS |
15694 | /* Copy fi.nested_types_list linked list elements content into the |
15695 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 15696 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 15697 | { |
be2daae6 | 15698 | int count = fi.nested_types_list.size (); |
883fd55a KS |
15699 | |
15700 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15701 | TYPE_NESTED_TYPES_ARRAY (type) | |
15702 | = ((struct decl_field *) | |
be2daae6 TT |
15703 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
15704 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 15705 | |
be2daae6 TT |
15706 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
15707 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 15708 | } |
c906108c | 15709 | } |
63d06c5c | 15710 | |
bb5ed363 | 15711 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
15712 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
15713 | cu->rust_unions.push_back (type); | |
0b92b5bb | 15714 | |
90aeadfc DC |
15715 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
15716 | snapshots) has been known to create a die giving a declaration | |
15717 | for a class that has, as a child, a die giving a definition for a | |
15718 | nested class. So we have to process our children even if the | |
15719 | current die is a declaration. Normally, of course, a declaration | |
15720 | won't have any children at all. */ | |
134d01f1 | 15721 | |
ca040673 DE |
15722 | child_die = die->child; |
15723 | ||
90aeadfc DC |
15724 | while (child_die != NULL && child_die->tag) |
15725 | { | |
15726 | if (child_die->tag == DW_TAG_member | |
15727 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
15728 | || child_die->tag == DW_TAG_inheritance |
15729 | || child_die->tag == DW_TAG_template_value_param | |
15730 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 15731 | { |
90aeadfc | 15732 | /* Do nothing. */ |
134d01f1 | 15733 | } |
90aeadfc DC |
15734 | else |
15735 | process_die (child_die, cu); | |
134d01f1 | 15736 | |
436c571c | 15737 | child_die = child_die->sibling; |
134d01f1 DJ |
15738 | } |
15739 | ||
fa4028e9 JB |
15740 | /* Do not consider external references. According to the DWARF standard, |
15741 | these DIEs are identified by the fact that they have no byte_size | |
15742 | attribute, and a declaration attribute. */ | |
15743 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15744 | || !die_is_declaration (die, cu)) | |
3e1d3d8c TT |
15745 | { |
15746 | struct symbol *sym = new_symbol (die, type, cu); | |
15747 | ||
15748 | if (has_template_parameters) | |
15749 | { | |
a776957c TT |
15750 | struct symtab *symtab; |
15751 | if (sym != nullptr) | |
15752 | symtab = symbol_symtab (sym); | |
15753 | else if (cu->line_header != nullptr) | |
15754 | { | |
15755 | /* Any related symtab will do. */ | |
15756 | symtab | |
7ba99d21 | 15757 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
15758 | } |
15759 | else | |
15760 | { | |
15761 | symtab = nullptr; | |
15762 | complaint (_("could not find suitable " | |
15763 | "symtab for template parameter" | |
15764 | " - DIE at %s [in module %s]"), | |
15765 | sect_offset_str (die->sect_off), | |
15766 | objfile_name (objfile)); | |
15767 | } | |
15768 | ||
15769 | if (symtab != nullptr) | |
15770 | { | |
15771 | /* Make sure that the symtab is set on the new symbols. | |
15772 | Even though they don't appear in this symtab directly, | |
15773 | other parts of gdb assume that symbols do, and this is | |
15774 | reasonably true. */ | |
15775 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
15776 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
15777 | } | |
3e1d3d8c TT |
15778 | } |
15779 | } | |
134d01f1 DJ |
15780 | } |
15781 | ||
55426c9d JB |
15782 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
15783 | update TYPE using some information only available in DIE's children. */ | |
15784 | ||
15785 | static void | |
15786 | update_enumeration_type_from_children (struct die_info *die, | |
15787 | struct type *type, | |
15788 | struct dwarf2_cu *cu) | |
15789 | { | |
60f7655a | 15790 | struct die_info *child_die; |
55426c9d JB |
15791 | int unsigned_enum = 1; |
15792 | int flag_enum = 1; | |
55426c9d | 15793 | |
8268c778 | 15794 | auto_obstack obstack; |
55426c9d | 15795 | |
60f7655a DE |
15796 | for (child_die = die->child; |
15797 | child_die != NULL && child_die->tag; | |
436c571c | 15798 | child_die = child_die->sibling) |
55426c9d JB |
15799 | { |
15800 | struct attribute *attr; | |
15801 | LONGEST value; | |
15802 | const gdb_byte *bytes; | |
15803 | struct dwarf2_locexpr_baton *baton; | |
15804 | const char *name; | |
60f7655a | 15805 | |
55426c9d JB |
15806 | if (child_die->tag != DW_TAG_enumerator) |
15807 | continue; | |
15808 | ||
15809 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
15810 | if (attr == NULL) | |
15811 | continue; | |
15812 | ||
15813 | name = dwarf2_name (child_die, cu); | |
15814 | if (name == NULL) | |
15815 | name = "<anonymous enumerator>"; | |
15816 | ||
15817 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
15818 | &value, &bytes, &baton); | |
15819 | if (value < 0) | |
15820 | { | |
15821 | unsigned_enum = 0; | |
15822 | flag_enum = 0; | |
15823 | } | |
55426c9d | 15824 | else |
edd45eb0 SM |
15825 | { |
15826 | if (count_one_bits_ll (value) >= 2) | |
15827 | flag_enum = 0; | |
edd45eb0 | 15828 | } |
55426c9d JB |
15829 | |
15830 | /* If we already know that the enum type is neither unsigned, nor | |
15831 | a flag type, no need to look at the rest of the enumerates. */ | |
15832 | if (!unsigned_enum && !flag_enum) | |
15833 | break; | |
55426c9d JB |
15834 | } |
15835 | ||
15836 | if (unsigned_enum) | |
15837 | TYPE_UNSIGNED (type) = 1; | |
15838 | if (flag_enum) | |
15839 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
15840 | } |
15841 | ||
134d01f1 DJ |
15842 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
15843 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 15844 | |
f792889a | 15845 | static struct type * |
134d01f1 | 15846 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15847 | { |
518817b3 | 15848 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 15849 | struct type *type; |
c906108c | 15850 | struct attribute *attr; |
0114d602 | 15851 | const char *name; |
134d01f1 | 15852 | |
348e048f DE |
15853 | /* If the definition of this type lives in .debug_types, read that type. |
15854 | Don't follow DW_AT_specification though, that will take us back up | |
15855 | the chain and we want to go down. */ | |
052c8bb8 | 15856 | attr = die->attr (DW_AT_signature); |
435d3d88 | 15857 | if (attr != nullptr) |
348e048f | 15858 | { |
ac9ec31b | 15859 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15860 | |
ac9ec31b | 15861 | /* The type's CU may not be the same as CU. |
02142a6c | 15862 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15863 | return set_die_type (die, type, cu); |
15864 | } | |
15865 | ||
c906108c SS |
15866 | type = alloc_type (objfile); |
15867 | ||
15868 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 15869 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 15870 | if (name != NULL) |
e86ca25f | 15871 | TYPE_NAME (type) = name; |
c906108c | 15872 | |
0626fc76 TT |
15873 | attr = dwarf2_attr (die, DW_AT_type, cu); |
15874 | if (attr != NULL) | |
15875 | { | |
15876 | struct type *underlying_type = die_type (die, cu); | |
15877 | ||
15878 | TYPE_TARGET_TYPE (type) = underlying_type; | |
15879 | } | |
15880 | ||
e142c38c | 15881 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15882 | if (attr != nullptr) |
c906108c SS |
15883 | { |
15884 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
15885 | } | |
15886 | else | |
15887 | { | |
15888 | TYPE_LENGTH (type) = 0; | |
15889 | } | |
15890 | ||
2b4424c3 TT |
15891 | maybe_set_alignment (cu, die, type); |
15892 | ||
137033e9 JB |
15893 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
15894 | declared as private in the package spec, and then defined only | |
15895 | inside the package body. Such types are known as Taft Amendment | |
15896 | Types. When another package uses such a type, an incomplete DIE | |
15897 | may be generated by the compiler. */ | |
02eb380e | 15898 | if (die_is_declaration (die, cu)) |
876cecd0 | 15899 | TYPE_STUB (type) = 1; |
02eb380e | 15900 | |
0626fc76 TT |
15901 | /* Finish the creation of this type by using the enum's children. |
15902 | We must call this even when the underlying type has been provided | |
15903 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
15904 | update_enumeration_type_from_children (die, type, cu); |
15905 | ||
0626fc76 TT |
15906 | /* If this type has an underlying type that is not a stub, then we |
15907 | may use its attributes. We always use the "unsigned" attribute | |
15908 | in this situation, because ordinarily we guess whether the type | |
15909 | is unsigned -- but the guess can be wrong and the underlying type | |
15910 | can tell us the reality. However, we defer to a local size | |
15911 | attribute if one exists, because this lets the compiler override | |
15912 | the underlying type if needed. */ | |
15913 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
15914 | { | |
9e7c9a03 HD |
15915 | struct type *underlying_type = TYPE_TARGET_TYPE (type); |
15916 | underlying_type = check_typedef (underlying_type); | |
15917 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (underlying_type); | |
0626fc76 | 15918 | if (TYPE_LENGTH (type) == 0) |
9e7c9a03 | 15919 | TYPE_LENGTH (type) = TYPE_LENGTH (underlying_type); |
2b4424c3 | 15920 | if (TYPE_RAW_ALIGN (type) == 0 |
9e7c9a03 HD |
15921 | && TYPE_RAW_ALIGN (underlying_type) != 0) |
15922 | set_type_align (type, TYPE_RAW_ALIGN (underlying_type)); | |
0626fc76 TT |
15923 | } |
15924 | ||
3d567982 TT |
15925 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
15926 | ||
f792889a | 15927 | return set_die_type (die, type, cu); |
134d01f1 DJ |
15928 | } |
15929 | ||
15930 | /* Given a pointer to a die which begins an enumeration, process all | |
15931 | the dies that define the members of the enumeration, and create the | |
15932 | symbol for the enumeration type. | |
15933 | ||
15934 | NOTE: We reverse the order of the element list. */ | |
15935 | ||
15936 | static void | |
15937 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15938 | { | |
f792889a | 15939 | struct type *this_type; |
134d01f1 | 15940 | |
f792889a DJ |
15941 | this_type = get_die_type (die, cu); |
15942 | if (this_type == NULL) | |
15943 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 15944 | |
639d11d3 | 15945 | if (die->child != NULL) |
c906108c | 15946 | { |
9dc481d3 DE |
15947 | struct die_info *child_die; |
15948 | struct symbol *sym; | |
43816ebc | 15949 | std::vector<struct field> fields; |
15d034d0 | 15950 | const char *name; |
9dc481d3 | 15951 | |
639d11d3 | 15952 | child_die = die->child; |
c906108c SS |
15953 | while (child_die && child_die->tag) |
15954 | { | |
15955 | if (child_die->tag != DW_TAG_enumerator) | |
15956 | { | |
e7c27a73 | 15957 | process_die (child_die, cu); |
c906108c SS |
15958 | } |
15959 | else | |
15960 | { | |
39cbfefa DJ |
15961 | name = dwarf2_name (child_die, cu); |
15962 | if (name) | |
c906108c | 15963 | { |
f792889a | 15964 | sym = new_symbol (child_die, this_type, cu); |
c906108c | 15965 | |
43816ebc TT |
15966 | fields.emplace_back (); |
15967 | struct field &field = fields.back (); | |
c906108c | 15968 | |
43816ebc TT |
15969 | FIELD_NAME (field) = sym->linkage_name (); |
15970 | FIELD_TYPE (field) = NULL; | |
15971 | SET_FIELD_ENUMVAL (field, SYMBOL_VALUE (sym)); | |
15972 | FIELD_BITSIZE (field) = 0; | |
c906108c SS |
15973 | } |
15974 | } | |
15975 | ||
436c571c | 15976 | child_die = child_die->sibling; |
c906108c SS |
15977 | } |
15978 | ||
43816ebc | 15979 | if (!fields.empty ()) |
c906108c | 15980 | { |
43816ebc | 15981 | TYPE_NFIELDS (this_type) = fields.size (); |
f792889a | 15982 | TYPE_FIELDS (this_type) = (struct field *) |
43816ebc TT |
15983 | TYPE_ALLOC (this_type, sizeof (struct field) * fields.size ()); |
15984 | memcpy (TYPE_FIELDS (this_type), fields.data (), | |
15985 | sizeof (struct field) * fields.size ()); | |
c906108c | 15986 | } |
c906108c | 15987 | } |
134d01f1 | 15988 | |
6c83ed52 TT |
15989 | /* If we are reading an enum from a .debug_types unit, and the enum |
15990 | is a declaration, and the enum is not the signatured type in the | |
15991 | unit, then we do not want to add a symbol for it. Adding a | |
15992 | symbol would in some cases obscure the true definition of the | |
15993 | enum, giving users an incomplete type when the definition is | |
15994 | actually available. Note that we do not want to do this for all | |
15995 | enums which are just declarations, because C++0x allows forward | |
15996 | enum declarations. */ | |
3019eac3 | 15997 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
15998 | && die_is_declaration (die, cu)) |
15999 | { | |
52dc124a | 16000 | struct signatured_type *sig_type; |
6c83ed52 | 16001 | |
c0f78cd4 | 16002 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16003 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16004 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16005 | return; |
16006 | } | |
16007 | ||
f792889a | 16008 | new_symbol (die, this_type, cu); |
c906108c SS |
16009 | } |
16010 | ||
16011 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16012 | the DIE's type field. For now, this only handles one dimensional | |
16013 | arrays. */ | |
16014 | ||
f792889a | 16015 | static struct type * |
e7c27a73 | 16016 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16017 | { |
518817b3 | 16018 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16019 | struct die_info *child_die; |
7e314c57 | 16020 | struct type *type; |
c906108c | 16021 | struct type *element_type, *range_type, *index_type; |
c906108c | 16022 | struct attribute *attr; |
15d034d0 | 16023 | const char *name; |
a405673c | 16024 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16025 | unsigned int bit_stride = 0; |
c906108c | 16026 | |
e7c27a73 | 16027 | element_type = die_type (die, cu); |
c906108c | 16028 | |
7e314c57 JK |
16029 | /* The die_type call above may have already set the type for this DIE. */ |
16030 | type = get_die_type (die, cu); | |
16031 | if (type) | |
16032 | return type; | |
16033 | ||
dc53a7ad JB |
16034 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16035 | if (attr != NULL) | |
a405673c JB |
16036 | { |
16037 | int stride_ok; | |
09ba997f | 16038 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
a405673c JB |
16039 | |
16040 | byte_stride_prop | |
16041 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
16042 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
16043 | prop_type); | |
a405673c JB |
16044 | if (!stride_ok) |
16045 | { | |
b98664d3 | 16046 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
16047 | " - DIE at %s [in module %s]"), |
16048 | sect_offset_str (die->sect_off), | |
518817b3 | 16049 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a405673c JB |
16050 | /* Ignore this attribute. We will likely not be able to print |
16051 | arrays of this type correctly, but there is little we can do | |
16052 | to help if we cannot read the attribute's value. */ | |
16053 | byte_stride_prop = NULL; | |
16054 | } | |
16055 | } | |
dc53a7ad JB |
16056 | |
16057 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16058 | if (attr != NULL) | |
16059 | bit_stride = DW_UNSND (attr); | |
16060 | ||
c906108c SS |
16061 | /* Irix 6.2 native cc creates array types without children for |
16062 | arrays with unspecified length. */ | |
639d11d3 | 16063 | if (die->child == NULL) |
c906108c | 16064 | { |
46bf5051 | 16065 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16066 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16067 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16068 | byte_stride_prop, bit_stride); |
f792889a | 16069 | return set_die_type (die, type, cu); |
c906108c SS |
16070 | } |
16071 | ||
791afaa2 | 16072 | std::vector<struct type *> range_types; |
639d11d3 | 16073 | child_die = die->child; |
c906108c SS |
16074 | while (child_die && child_die->tag) |
16075 | { | |
16076 | if (child_die->tag == DW_TAG_subrange_type) | |
16077 | { | |
f792889a | 16078 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16079 | |
f792889a | 16080 | if (child_type != NULL) |
a02abb62 | 16081 | { |
0963b4bd MS |
16082 | /* The range type was succesfully read. Save it for the |
16083 | array type creation. */ | |
791afaa2 | 16084 | range_types.push_back (child_type); |
a02abb62 | 16085 | } |
c906108c | 16086 | } |
436c571c | 16087 | child_die = child_die->sibling; |
c906108c SS |
16088 | } |
16089 | ||
16090 | /* Dwarf2 dimensions are output from left to right, create the | |
16091 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16092 | |
c906108c | 16093 | type = element_type; |
7ca2d3a3 DL |
16094 | |
16095 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16096 | { | |
16097 | int i = 0; | |
9a619af0 | 16098 | |
791afaa2 | 16099 | while (i < range_types.size ()) |
dc53a7ad | 16100 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 16101 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
16102 | } |
16103 | else | |
16104 | { | |
791afaa2 | 16105 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16106 | while (ndim-- > 0) |
dc53a7ad | 16107 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 16108 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 16109 | } |
c906108c | 16110 | |
f5f8a009 EZ |
16111 | /* Understand Dwarf2 support for vector types (like they occur on |
16112 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16113 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16114 | custom vendor extension. The main difference between a regular | |
16115 | array and the vector variant is that vectors are passed by value | |
16116 | to functions. */ | |
e142c38c | 16117 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 16118 | if (attr != nullptr) |
ea37ba09 | 16119 | make_vector_type (type); |
f5f8a009 | 16120 | |
dbc98a8b KW |
16121 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16122 | implementation may choose to implement triple vectors using this | |
16123 | attribute. */ | |
16124 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16125 | if (attr != nullptr) |
dbc98a8b KW |
16126 | { |
16127 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16128 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16129 | else | |
b98664d3 | 16130 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 16131 | "than the total size of elements")); |
dbc98a8b KW |
16132 | } |
16133 | ||
39cbfefa DJ |
16134 | name = dwarf2_name (die, cu); |
16135 | if (name) | |
16136 | TYPE_NAME (type) = name; | |
6e70227d | 16137 | |
2b4424c3 TT |
16138 | maybe_set_alignment (cu, die, type); |
16139 | ||
0963b4bd | 16140 | /* Install the type in the die. */ |
7e314c57 JK |
16141 | set_die_type (die, type, cu); |
16142 | ||
16143 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16144 | set_descriptive_type (type, die, cu); |
16145 | ||
7e314c57 | 16146 | return type; |
c906108c SS |
16147 | } |
16148 | ||
7ca2d3a3 | 16149 | static enum dwarf_array_dim_ordering |
6e70227d | 16150 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16151 | { |
16152 | struct attribute *attr; | |
16153 | ||
16154 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16155 | ||
435d3d88 | 16156 | if (attr != nullptr) |
aead7601 | 16157 | return (enum dwarf_array_dim_ordering) DW_SND (attr); |
7ca2d3a3 | 16158 | |
0963b4bd MS |
16159 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16160 | opposite order to the dwarf2 specification, but data is still | |
16161 | laid out as per normal fortran. | |
7ca2d3a3 | 16162 | |
0963b4bd MS |
16163 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16164 | version checking. */ | |
7ca2d3a3 | 16165 | |
905e0470 PM |
16166 | if (cu->language == language_fortran |
16167 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16168 | { |
16169 | return DW_ORD_row_major; | |
16170 | } | |
16171 | ||
6e70227d | 16172 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
16173 | { |
16174 | case array_column_major: | |
16175 | return DW_ORD_col_major; | |
16176 | case array_row_major: | |
16177 | default: | |
16178 | return DW_ORD_row_major; | |
16179 | }; | |
16180 | } | |
16181 | ||
72019c9c | 16182 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16183 | the DIE's type field. */ |
72019c9c | 16184 | |
f792889a | 16185 | static struct type * |
72019c9c GM |
16186 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16187 | { | |
7e314c57 JK |
16188 | struct type *domain_type, *set_type; |
16189 | struct attribute *attr; | |
f792889a | 16190 | |
7e314c57 JK |
16191 | domain_type = die_type (die, cu); |
16192 | ||
16193 | /* The die_type call above may have already set the type for this DIE. */ | |
16194 | set_type = get_die_type (die, cu); | |
16195 | if (set_type) | |
16196 | return set_type; | |
16197 | ||
16198 | set_type = create_set_type (NULL, domain_type); | |
16199 | ||
16200 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16201 | if (attr != nullptr) |
d09039dd | 16202 | TYPE_LENGTH (set_type) = DW_UNSND (attr); |
7e314c57 | 16203 | |
2b4424c3 TT |
16204 | maybe_set_alignment (cu, die, set_type); |
16205 | ||
f792889a | 16206 | return set_die_type (die, set_type, cu); |
72019c9c | 16207 | } |
7ca2d3a3 | 16208 | |
0971de02 TT |
16209 | /* A helper for read_common_block that creates a locexpr baton. |
16210 | SYM is the symbol which we are marking as computed. | |
16211 | COMMON_DIE is the DIE for the common block. | |
16212 | COMMON_LOC is the location expression attribute for the common | |
16213 | block itself. | |
16214 | MEMBER_LOC is the location expression attribute for the particular | |
16215 | member of the common block that we are processing. | |
16216 | CU is the CU from which the above come. */ | |
16217 | ||
16218 | static void | |
16219 | mark_common_block_symbol_computed (struct symbol *sym, | |
16220 | struct die_info *common_die, | |
16221 | struct attribute *common_loc, | |
16222 | struct attribute *member_loc, | |
16223 | struct dwarf2_cu *cu) | |
16224 | { | |
518817b3 SM |
16225 | struct dwarf2_per_objfile *dwarf2_per_objfile |
16226 | = cu->per_cu->dwarf2_per_objfile; | |
0971de02 TT |
16227 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
16228 | struct dwarf2_locexpr_baton *baton; | |
16229 | gdb_byte *ptr; | |
16230 | unsigned int cu_off; | |
08feed99 | 16231 | enum bfd_endian byte_order = gdbarch_byte_order (objfile->arch ()); |
0971de02 TT |
16232 | LONGEST offset = 0; |
16233 | ||
16234 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
16235 | gdb_assert (common_loc->form_is_block ()); |
16236 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 16237 | || member_loc->form_is_constant ()); |
0971de02 | 16238 | |
8d749320 | 16239 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
0971de02 TT |
16240 | baton->per_cu = cu->per_cu; |
16241 | gdb_assert (baton->per_cu); | |
16242 | ||
16243 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16244 | ||
cd6c91b4 | 16245 | if (member_loc->form_is_constant ()) |
0971de02 | 16246 | { |
0826b30a | 16247 | offset = member_loc->constant_value (0); |
0971de02 TT |
16248 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; |
16249 | } | |
16250 | else | |
16251 | baton->size += DW_BLOCK (member_loc)->size; | |
16252 | ||
224c3ddb | 16253 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16254 | baton->data = ptr; |
16255 | ||
16256 | *ptr++ = DW_OP_call4; | |
9c541725 | 16257 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16258 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16259 | ptr += 4; | |
16260 | ||
cd6c91b4 | 16261 | if (member_loc->form_is_constant ()) |
0971de02 TT |
16262 | { |
16263 | *ptr++ = DW_OP_addr; | |
16264 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16265 | ptr += cu->header.addr_size; | |
16266 | } | |
16267 | else | |
16268 | { | |
16269 | /* We have to copy the data here, because DW_OP_call4 will only | |
16270 | use a DW_AT_location attribute. */ | |
16271 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
16272 | ptr += DW_BLOCK (member_loc)->size; | |
16273 | } | |
16274 | ||
16275 | *ptr++ = DW_OP_plus; | |
16276 | gdb_assert (ptr - baton->data == baton->size); | |
16277 | ||
0971de02 | 16278 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16279 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
16280 | } |
16281 | ||
4357ac6c TT |
16282 | /* Create appropriate locally-scoped variables for all the |
16283 | DW_TAG_common_block entries. Also create a struct common_block | |
16284 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 16285 | is used to separate the common blocks name namespace from regular |
4357ac6c | 16286 | variable names. */ |
c906108c SS |
16287 | |
16288 | static void | |
e7c27a73 | 16289 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16290 | { |
0971de02 TT |
16291 | struct attribute *attr; |
16292 | ||
16293 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 16294 | if (attr != nullptr) |
0971de02 TT |
16295 | { |
16296 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 16297 | if (attr->form_is_block ()) |
0971de02 TT |
16298 | { |
16299 | /* Ok. */ | |
16300 | } | |
cd6c91b4 | 16301 | else if (attr->form_is_section_offset ()) |
0971de02 TT |
16302 | { |
16303 | dwarf2_complex_location_expr_complaint (); | |
16304 | attr = NULL; | |
16305 | } | |
16306 | else | |
16307 | { | |
16308 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
16309 | "common block member"); | |
16310 | attr = NULL; | |
16311 | } | |
16312 | } | |
16313 | ||
639d11d3 | 16314 | if (die->child != NULL) |
c906108c | 16315 | { |
518817b3 | 16316 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
4357ac6c TT |
16317 | struct die_info *child_die; |
16318 | size_t n_entries = 0, size; | |
16319 | struct common_block *common_block; | |
16320 | struct symbol *sym; | |
74ac6d43 | 16321 | |
4357ac6c TT |
16322 | for (child_die = die->child; |
16323 | child_die && child_die->tag; | |
436c571c | 16324 | child_die = child_die->sibling) |
4357ac6c TT |
16325 | ++n_entries; |
16326 | ||
16327 | size = (sizeof (struct common_block) | |
16328 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
16329 | common_block |
16330 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
16331 | size); | |
4357ac6c TT |
16332 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
16333 | common_block->n_entries = 0; | |
16334 | ||
16335 | for (child_die = die->child; | |
16336 | child_die && child_die->tag; | |
436c571c | 16337 | child_die = child_die->sibling) |
4357ac6c TT |
16338 | { |
16339 | /* Create the symbol in the DW_TAG_common_block block in the current | |
16340 | symbol scope. */ | |
e7c27a73 | 16341 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
16342 | if (sym != NULL) |
16343 | { | |
16344 | struct attribute *member_loc; | |
16345 | ||
16346 | common_block->contents[common_block->n_entries++] = sym; | |
16347 | ||
16348 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
16349 | cu); | |
16350 | if (member_loc) | |
16351 | { | |
16352 | /* GDB has handled this for a long time, but it is | |
16353 | not specified by DWARF. It seems to have been | |
16354 | emitted by gfortran at least as recently as: | |
16355 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 16356 | complaint (_("Variable in common block has " |
0971de02 | 16357 | "DW_AT_data_member_location " |
9d8780f0 SM |
16358 | "- DIE at %s [in module %s]"), |
16359 | sect_offset_str (child_die->sect_off), | |
518817b3 | 16360 | objfile_name (objfile)); |
0971de02 | 16361 | |
cd6c91b4 | 16362 | if (member_loc->form_is_section_offset ()) |
0971de02 | 16363 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 16364 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 16365 | || member_loc->form_is_block ()) |
0971de02 | 16366 | { |
435d3d88 | 16367 | if (attr != nullptr) |
0971de02 TT |
16368 | mark_common_block_symbol_computed (sym, die, attr, |
16369 | member_loc, cu); | |
16370 | } | |
16371 | else | |
16372 | dwarf2_complex_location_expr_complaint (); | |
16373 | } | |
16374 | } | |
c906108c | 16375 | } |
4357ac6c TT |
16376 | |
16377 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
16378 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
16379 | } |
16380 | } | |
16381 | ||
0114d602 | 16382 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 16383 | |
0114d602 DJ |
16384 | static struct type * |
16385 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 16386 | { |
518817b3 | 16387 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16388 | const char *previous_prefix, *name; |
9219021c | 16389 | int is_anonymous; |
0114d602 DJ |
16390 | struct type *type; |
16391 | ||
16392 | /* For extensions, reuse the type of the original namespace. */ | |
16393 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16394 | { | |
16395 | struct die_info *ext_die; | |
16396 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16397 | |
0114d602 DJ |
16398 | ext_die = dwarf2_extension (die, &ext_cu); |
16399 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16400 | |
16401 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16402 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16403 | return set_die_type (die, type, cu); |
16404 | } | |
9219021c | 16405 | |
e142c38c | 16406 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16407 | |
16408 | /* Now build the name of the current namespace. */ | |
16409 | ||
0114d602 DJ |
16410 | previous_prefix = determine_prefix (die, cu); |
16411 | if (previous_prefix[0] != '\0') | |
16412 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16413 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16414 | |
16415 | /* Create the type. */ | |
19f392bc | 16416 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 16417 | |
60531b24 | 16418 | return set_die_type (die, type, cu); |
0114d602 DJ |
16419 | } |
16420 | ||
22cee43f | 16421 | /* Read a namespace scope. */ |
0114d602 DJ |
16422 | |
16423 | static void | |
16424 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16425 | { | |
518817b3 | 16426 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16427 | int is_anonymous; |
9219021c | 16428 | |
5c4e30ca DC |
16429 | /* Add a symbol associated to this if we haven't seen the namespace |
16430 | before. Also, add a using directive if it's an anonymous | |
16431 | namespace. */ | |
9219021c | 16432 | |
f2f0e013 | 16433 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16434 | { |
16435 | struct type *type; | |
16436 | ||
0114d602 | 16437 | type = read_type_die (die, cu); |
e7c27a73 | 16438 | new_symbol (die, type, cu); |
5c4e30ca | 16439 | |
e8e80198 | 16440 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16441 | if (is_anonymous) |
0114d602 DJ |
16442 | { |
16443 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16444 | |
eb1e02fd | 16445 | std::vector<const char *> excludes; |
804d2729 | 16446 | add_using_directive (using_directives (cu), |
22cee43f | 16447 | previous_prefix, TYPE_NAME (type), NULL, |
eb1e02fd | 16448 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16449 | } |
5c4e30ca | 16450 | } |
9219021c | 16451 | |
639d11d3 | 16452 | if (die->child != NULL) |
d9fa45fe | 16453 | { |
639d11d3 | 16454 | struct die_info *child_die = die->child; |
6e70227d | 16455 | |
d9fa45fe DC |
16456 | while (child_die && child_die->tag) |
16457 | { | |
e7c27a73 | 16458 | process_die (child_die, cu); |
436c571c | 16459 | child_die = child_die->sibling; |
d9fa45fe DC |
16460 | } |
16461 | } | |
38d518c9 EZ |
16462 | } |
16463 | ||
f55ee35c JK |
16464 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16465 | imported module. Still we need that type as local Fortran "use ... only" | |
16466 | declaration imports depend on the created type in determine_prefix. */ | |
16467 | ||
16468 | static struct type * | |
16469 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16470 | { | |
518817b3 | 16471 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
15d034d0 | 16472 | const char *module_name; |
f55ee35c JK |
16473 | struct type *type; |
16474 | ||
16475 | module_name = dwarf2_name (die, cu); | |
19f392bc | 16476 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 16477 | |
f55ee35c JK |
16478 | return set_die_type (die, type, cu); |
16479 | } | |
16480 | ||
5d7cb8df JK |
16481 | /* Read a Fortran module. */ |
16482 | ||
16483 | static void | |
16484 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
16485 | { | |
16486 | struct die_info *child_die = die->child; | |
530e8392 KB |
16487 | struct type *type; |
16488 | ||
16489 | type = read_type_die (die, cu); | |
16490 | new_symbol (die, type, cu); | |
5d7cb8df | 16491 | |
5d7cb8df JK |
16492 | while (child_die && child_die->tag) |
16493 | { | |
16494 | process_die (child_die, cu); | |
436c571c | 16495 | child_die = child_die->sibling; |
5d7cb8df JK |
16496 | } |
16497 | } | |
16498 | ||
38d518c9 EZ |
16499 | /* Return the name of the namespace represented by DIE. Set |
16500 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
16501 | namespace. */ | |
16502 | ||
16503 | static const char * | |
e142c38c | 16504 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
16505 | { |
16506 | struct die_info *current_die; | |
16507 | const char *name = NULL; | |
16508 | ||
16509 | /* Loop through the extensions until we find a name. */ | |
16510 | ||
16511 | for (current_die = die; | |
16512 | current_die != NULL; | |
f2f0e013 | 16513 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 16514 | { |
96553a0c DE |
16515 | /* We don't use dwarf2_name here so that we can detect the absence |
16516 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 16517 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 16518 | |
38d518c9 EZ |
16519 | if (name != NULL) |
16520 | break; | |
16521 | } | |
16522 | ||
16523 | /* Is it an anonymous namespace? */ | |
16524 | ||
16525 | *is_anonymous = (name == NULL); | |
16526 | if (*is_anonymous) | |
2b1dbab0 | 16527 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
16528 | |
16529 | return name; | |
d9fa45fe DC |
16530 | } |
16531 | ||
c906108c SS |
16532 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
16533 | the user defined type vector. */ | |
16534 | ||
f792889a | 16535 | static struct type * |
e7c27a73 | 16536 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16537 | { |
518817b3 | 16538 | struct gdbarch *gdbarch |
08feed99 | 16539 | = cu->per_cu->dwarf2_per_objfile->objfile->arch (); |
e7c27a73 | 16540 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 16541 | struct type *type; |
8b2dbe47 KB |
16542 | struct attribute *attr_byte_size; |
16543 | struct attribute *attr_address_class; | |
16544 | int byte_size, addr_class; | |
7e314c57 JK |
16545 | struct type *target_type; |
16546 | ||
16547 | target_type = die_type (die, cu); | |
c906108c | 16548 | |
7e314c57 JK |
16549 | /* The die_type call above may have already set the type for this DIE. */ |
16550 | type = get_die_type (die, cu); | |
16551 | if (type) | |
16552 | return type; | |
16553 | ||
16554 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 16555 | |
e142c38c | 16556 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
16557 | if (attr_byte_size) |
16558 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 16559 | else |
8b2dbe47 KB |
16560 | byte_size = cu_header->addr_size; |
16561 | ||
e142c38c | 16562 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
16563 | if (attr_address_class) |
16564 | addr_class = DW_UNSND (attr_address_class); | |
16565 | else | |
16566 | addr_class = DW_ADDR_none; | |
16567 | ||
2b4424c3 TT |
16568 | ULONGEST alignment = get_alignment (cu, die); |
16569 | ||
16570 | /* If the pointer size, alignment, or address class is different | |
16571 | than the default, create a type variant marked as such and set | |
16572 | the length accordingly. */ | |
16573 | if (TYPE_LENGTH (type) != byte_size | |
16574 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
16575 | && alignment != TYPE_RAW_ALIGN (type)) | |
16576 | || addr_class != DW_ADDR_none) | |
c906108c | 16577 | { |
5e2b427d | 16578 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
16579 | { |
16580 | int type_flags; | |
16581 | ||
849957d9 | 16582 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 16583 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
16584 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
16585 | == 0); | |
8b2dbe47 KB |
16586 | type = make_type_with_address_space (type, type_flags); |
16587 | } | |
16588 | else if (TYPE_LENGTH (type) != byte_size) | |
16589 | { | |
b98664d3 | 16590 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 16591 | } |
2b4424c3 TT |
16592 | else if (TYPE_RAW_ALIGN (type) != alignment) |
16593 | { | |
b98664d3 | 16594 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
16595 | " - DIE at %s [in module %s]"), |
16596 | sect_offset_str (die->sect_off), | |
16597 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
16598 | } | |
6e70227d | 16599 | else |
9a619af0 MS |
16600 | { |
16601 | /* Should we also complain about unhandled address classes? */ | |
16602 | } | |
c906108c | 16603 | } |
8b2dbe47 KB |
16604 | |
16605 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 16606 | set_type_align (type, alignment); |
f792889a | 16607 | return set_die_type (die, type, cu); |
c906108c SS |
16608 | } |
16609 | ||
16610 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
16611 | the user defined type vector. */ | |
16612 | ||
f792889a | 16613 | static struct type * |
e7c27a73 | 16614 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
16615 | { |
16616 | struct type *type; | |
16617 | struct type *to_type; | |
16618 | struct type *domain; | |
16619 | ||
e7c27a73 DJ |
16620 | to_type = die_type (die, cu); |
16621 | domain = die_containing_type (die, cu); | |
0d5de010 | 16622 | |
7e314c57 JK |
16623 | /* The calls above may have already set the type for this DIE. */ |
16624 | type = get_die_type (die, cu); | |
16625 | if (type) | |
16626 | return type; | |
16627 | ||
0d5de010 DJ |
16628 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
16629 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
16630 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
16631 | { | |
518817b3 SM |
16632 | struct type *new_type |
16633 | = alloc_type (cu->per_cu->dwarf2_per_objfile->objfile); | |
7078baeb TT |
16634 | |
16635 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
16636 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
16637 | TYPE_VARARGS (to_type)); | |
16638 | type = lookup_methodptr_type (new_type); | |
16639 | } | |
0d5de010 DJ |
16640 | else |
16641 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 16642 | |
f792889a | 16643 | return set_die_type (die, type, cu); |
c906108c SS |
16644 | } |
16645 | ||
4297a3f0 | 16646 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
16647 | the user defined type vector. */ |
16648 | ||
f792889a | 16649 | static struct type * |
4297a3f0 AV |
16650 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
16651 | enum type_code refcode) | |
c906108c | 16652 | { |
e7c27a73 | 16653 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 16654 | struct type *type, *target_type; |
c906108c SS |
16655 | struct attribute *attr; |
16656 | ||
4297a3f0 AV |
16657 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
16658 | ||
7e314c57 JK |
16659 | target_type = die_type (die, cu); |
16660 | ||
16661 | /* The die_type call above may have already set the type for this DIE. */ | |
16662 | type = get_die_type (die, cu); | |
16663 | if (type) | |
16664 | return type; | |
16665 | ||
4297a3f0 | 16666 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 16667 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16668 | if (attr != nullptr) |
c906108c SS |
16669 | { |
16670 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16671 | } | |
16672 | else | |
16673 | { | |
107d2387 | 16674 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 16675 | } |
2b4424c3 | 16676 | maybe_set_alignment (cu, die, type); |
f792889a | 16677 | return set_die_type (die, type, cu); |
c906108c SS |
16678 | } |
16679 | ||
cf363f18 MW |
16680 | /* Add the given cv-qualifiers to the element type of the array. GCC |
16681 | outputs DWARF type qualifiers that apply to an array, not the | |
16682 | element type. But GDB relies on the array element type to carry | |
16683 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
16684 | specification. */ | |
16685 | ||
16686 | static struct type * | |
16687 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
16688 | struct type *base_type, int cnst, int voltl) | |
16689 | { | |
16690 | struct type *el_type, *inner_array; | |
16691 | ||
16692 | base_type = copy_type (base_type); | |
16693 | inner_array = base_type; | |
16694 | ||
16695 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
16696 | { | |
16697 | TYPE_TARGET_TYPE (inner_array) = | |
16698 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
16699 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
16700 | } | |
16701 | ||
16702 | el_type = TYPE_TARGET_TYPE (inner_array); | |
16703 | cnst |= TYPE_CONST (el_type); | |
16704 | voltl |= TYPE_VOLATILE (el_type); | |
16705 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
16706 | ||
16707 | return set_die_type (die, base_type, cu); | |
16708 | } | |
16709 | ||
f792889a | 16710 | static struct type * |
e7c27a73 | 16711 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16712 | { |
f792889a | 16713 | struct type *base_type, *cv_type; |
c906108c | 16714 | |
e7c27a73 | 16715 | base_type = die_type (die, cu); |
7e314c57 JK |
16716 | |
16717 | /* The die_type call above may have already set the type for this DIE. */ | |
16718 | cv_type = get_die_type (die, cu); | |
16719 | if (cv_type) | |
16720 | return cv_type; | |
16721 | ||
2f608a3a KW |
16722 | /* In case the const qualifier is applied to an array type, the element type |
16723 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
16724 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 16725 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 16726 | |
f792889a DJ |
16727 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
16728 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16729 | } |
16730 | ||
f792889a | 16731 | static struct type * |
e7c27a73 | 16732 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16733 | { |
f792889a | 16734 | struct type *base_type, *cv_type; |
c906108c | 16735 | |
e7c27a73 | 16736 | base_type = die_type (die, cu); |
7e314c57 JK |
16737 | |
16738 | /* The die_type call above may have already set the type for this DIE. */ | |
16739 | cv_type = get_die_type (die, cu); | |
16740 | if (cv_type) | |
16741 | return cv_type; | |
16742 | ||
cf363f18 MW |
16743 | /* In case the volatile qualifier is applied to an array type, the |
16744 | element type is so qualified, not the array type (section 6.7.3 | |
16745 | of C99). */ | |
16746 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
16747 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
16748 | ||
f792889a DJ |
16749 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
16750 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16751 | } |
16752 | ||
06d66ee9 TT |
16753 | /* Handle DW_TAG_restrict_type. */ |
16754 | ||
16755 | static struct type * | |
16756 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
16757 | { | |
16758 | struct type *base_type, *cv_type; | |
16759 | ||
16760 | base_type = die_type (die, cu); | |
16761 | ||
16762 | /* The die_type call above may have already set the type for this DIE. */ | |
16763 | cv_type = get_die_type (die, cu); | |
16764 | if (cv_type) | |
16765 | return cv_type; | |
16766 | ||
16767 | cv_type = make_restrict_type (base_type); | |
16768 | return set_die_type (die, cv_type, cu); | |
16769 | } | |
16770 | ||
a2c2acaf MW |
16771 | /* Handle DW_TAG_atomic_type. */ |
16772 | ||
16773 | static struct type * | |
16774 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
16775 | { | |
16776 | struct type *base_type, *cv_type; | |
16777 | ||
16778 | base_type = die_type (die, cu); | |
16779 | ||
16780 | /* The die_type call above may have already set the type for this DIE. */ | |
16781 | cv_type = get_die_type (die, cu); | |
16782 | if (cv_type) | |
16783 | return cv_type; | |
16784 | ||
16785 | cv_type = make_atomic_type (base_type); | |
16786 | return set_die_type (die, cv_type, cu); | |
16787 | } | |
16788 | ||
c906108c SS |
16789 | /* Extract all information from a DW_TAG_string_type DIE and add to |
16790 | the user defined type vector. It isn't really a user defined type, | |
16791 | but it behaves like one, with other DIE's using an AT_user_def_type | |
16792 | attribute to reference it. */ | |
16793 | ||
f792889a | 16794 | static struct type * |
e7c27a73 | 16795 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16796 | { |
518817b3 | 16797 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
08feed99 | 16798 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
16799 | struct type *type, *range_type, *index_type, *char_type; |
16800 | struct attribute *attr; | |
216a7e6b AB |
16801 | struct dynamic_prop prop; |
16802 | bool length_is_constant = true; | |
16803 | LONGEST length; | |
16804 | ||
16805 | /* There are a couple of places where bit sizes might be made use of | |
16806 | when parsing a DW_TAG_string_type, however, no producer that we know | |
16807 | of make use of these. Handling bit sizes that are a multiple of the | |
16808 | byte size is easy enough, but what about other bit sizes? Lets deal | |
16809 | with that problem when we have to. Warn about these attributes being | |
16810 | unsupported, then parse the type and ignore them like we always | |
16811 | have. */ | |
16812 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
16813 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
16814 | { | |
16815 | static bool warning_printed = false; | |
16816 | if (!warning_printed) | |
16817 | { | |
16818 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
16819 | "currently supported on DW_TAG_string_type.")); | |
16820 | warning_printed = true; | |
16821 | } | |
16822 | } | |
c906108c | 16823 | |
e142c38c | 16824 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 16825 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
16826 | { |
16827 | /* The string length describes the location at which the length of | |
16828 | the string can be found. The size of the length field can be | |
16829 | specified with one of the attributes below. */ | |
16830 | struct type *prop_type; | |
16831 | struct attribute *len | |
16832 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
16833 | if (len == nullptr) | |
16834 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 16835 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
16836 | { |
16837 | /* Pass 0 as the default as we know this attribute is constant | |
16838 | and the default value will not be returned. */ | |
0826b30a | 16839 | LONGEST sz = len->constant_value (0); |
09ba997f | 16840 | prop_type = cu->per_cu->int_type (sz, true); |
216a7e6b AB |
16841 | } |
16842 | else | |
16843 | { | |
16844 | /* If the size is not specified then we assume it is the size of | |
16845 | an address on this target. */ | |
09ba997f | 16846 | prop_type = cu->per_cu->addr_sized_int_type (true); |
216a7e6b AB |
16847 | } |
16848 | ||
16849 | /* Convert the attribute into a dynamic property. */ | |
16850 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
16851 | length = 1; | |
16852 | else | |
16853 | length_is_constant = false; | |
16854 | } | |
16855 | else if (attr != nullptr) | |
16856 | { | |
16857 | /* This DW_AT_string_length just contains the length with no | |
16858 | indirection. There's no need to create a dynamic property in this | |
16859 | case. Pass 0 for the default value as we know it will not be | |
16860 | returned in this case. */ | |
0826b30a | 16861 | length = attr->constant_value (0); |
216a7e6b AB |
16862 | } |
16863 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 16864 | { |
216a7e6b | 16865 | /* We don't currently support non-constant byte sizes for strings. */ |
0826b30a | 16866 | length = attr->constant_value (1); |
c906108c SS |
16867 | } |
16868 | else | |
16869 | { | |
216a7e6b AB |
16870 | /* Use 1 as a fallback length if we have nothing else. */ |
16871 | length = 1; | |
c906108c | 16872 | } |
6ccb9162 | 16873 | |
46bf5051 | 16874 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
16875 | if (length_is_constant) |
16876 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
16877 | else | |
16878 | { | |
16879 | struct dynamic_prop low_bound; | |
16880 | ||
16881 | low_bound.kind = PROP_CONST; | |
16882 | low_bound.data.const_val = 1; | |
16883 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); | |
16884 | } | |
3b7538c0 UW |
16885 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
16886 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 16887 | |
f792889a | 16888 | return set_die_type (die, type, cu); |
c906108c SS |
16889 | } |
16890 | ||
4d804846 JB |
16891 | /* Assuming that DIE corresponds to a function, returns nonzero |
16892 | if the function is prototyped. */ | |
16893 | ||
16894 | static int | |
16895 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
16896 | { | |
16897 | struct attribute *attr; | |
16898 | ||
16899 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
16900 | if (attr && (DW_UNSND (attr) != 0)) | |
16901 | return 1; | |
16902 | ||
16903 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 16904 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
16905 | languages that allow unprototyped functions (Eg: Objective C). |
16906 | For all other languages, assume that functions are always | |
16907 | prototyped. */ | |
16908 | if (cu->language != language_c | |
16909 | && cu->language != language_objc | |
16910 | && cu->language != language_opencl) | |
16911 | return 1; | |
16912 | ||
16913 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
16914 | prototyped and unprototyped functions; default to prototyped, | |
16915 | since that is more common in modern code (and RealView warns | |
16916 | about unprototyped functions). */ | |
16917 | if (producer_is_realview (cu->producer)) | |
16918 | return 1; | |
16919 | ||
16920 | return 0; | |
16921 | } | |
16922 | ||
c906108c SS |
16923 | /* Handle DIES due to C code like: |
16924 | ||
16925 | struct foo | |
c5aa993b JM |
16926 | { |
16927 | int (*funcp)(int a, long l); | |
16928 | int b; | |
16929 | }; | |
c906108c | 16930 | |
0963b4bd | 16931 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 16932 | |
f792889a | 16933 | static struct type * |
e7c27a73 | 16934 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16935 | { |
518817b3 | 16936 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0963b4bd MS |
16937 | struct type *type; /* Type that this function returns. */ |
16938 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
16939 | struct attribute *attr; |
16940 | ||
e7c27a73 | 16941 | type = die_type (die, cu); |
7e314c57 JK |
16942 | |
16943 | /* The die_type call above may have already set the type for this DIE. */ | |
16944 | ftype = get_die_type (die, cu); | |
16945 | if (ftype) | |
16946 | return ftype; | |
16947 | ||
0c8b41f1 | 16948 | ftype = lookup_function_type (type); |
c906108c | 16949 | |
4d804846 | 16950 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 16951 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 16952 | |
c055b101 CV |
16953 | /* Store the calling convention in the type if it's available in |
16954 | the subroutine die. Otherwise set the calling convention to | |
16955 | the default value DW_CC_normal. */ | |
16956 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf TBA |
16957 | if (attr != nullptr |
16958 | && is_valid_DW_AT_calling_convention_for_subroutine (DW_UNSND (attr))) | |
16959 | TYPE_CALLING_CONVENTION (ftype) | |
16960 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
54fcddd0 UW |
16961 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
16962 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
16963 | else | |
16964 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 16965 | |
743649fd MW |
16966 | /* Record whether the function returns normally to its caller or not |
16967 | if the DWARF producer set that information. */ | |
16968 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
16969 | if (attr && (DW_UNSND (attr) != 0)) | |
16970 | TYPE_NO_RETURN (ftype) = 1; | |
16971 | ||
76c10ea2 GM |
16972 | /* We need to add the subroutine type to the die immediately so |
16973 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 16974 | declared as the same subroutine type. */ |
76c10ea2 | 16975 | set_die_type (die, ftype, cu); |
6e70227d | 16976 | |
639d11d3 | 16977 | if (die->child != NULL) |
c906108c | 16978 | { |
bb5ed363 | 16979 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 16980 | struct die_info *child_die; |
8072405b | 16981 | int nparams, iparams; |
c906108c SS |
16982 | |
16983 | /* Count the number of parameters. | |
16984 | FIXME: GDB currently ignores vararg functions, but knows about | |
16985 | vararg member functions. */ | |
8072405b | 16986 | nparams = 0; |
639d11d3 | 16987 | child_die = die->child; |
c906108c SS |
16988 | while (child_die && child_die->tag) |
16989 | { | |
16990 | if (child_die->tag == DW_TAG_formal_parameter) | |
16991 | nparams++; | |
16992 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 16993 | TYPE_VARARGS (ftype) = 1; |
436c571c | 16994 | child_die = child_die->sibling; |
c906108c SS |
16995 | } |
16996 | ||
16997 | /* Allocate storage for parameters and fill them in. */ | |
16998 | TYPE_NFIELDS (ftype) = nparams; | |
16999 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 17000 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 17001 | |
8072405b JK |
17002 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17003 | even if we error out during the parameters reading below. */ | |
17004 | for (iparams = 0; iparams < nparams; iparams++) | |
17005 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
17006 | ||
17007 | iparams = 0; | |
639d11d3 | 17008 | child_die = die->child; |
c906108c SS |
17009 | while (child_die && child_die->tag) |
17010 | { | |
17011 | if (child_die->tag == DW_TAG_formal_parameter) | |
17012 | { | |
3ce3b1ba PA |
17013 | struct type *arg_type; |
17014 | ||
17015 | /* DWARF version 2 has no clean way to discern C++ | |
17016 | static and non-static member functions. G++ helps | |
17017 | GDB by marking the first parameter for non-static | |
17018 | member functions (which is the this pointer) as | |
17019 | artificial. We pass this information to | |
17020 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17021 | ||
17022 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17023 | 4.5 does not yet generate. */ | |
e142c38c | 17024 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 17025 | if (attr != nullptr) |
c906108c SS |
17026 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); |
17027 | else | |
9c37b5ae | 17028 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17029 | arg_type = die_type (child_die, cu); |
17030 | ||
17031 | /* RealView does not mark THIS as const, which the testsuite | |
17032 | expects. GCC marks THIS as const in method definitions, | |
17033 | but not in the class specifications (GCC PR 43053). */ | |
17034 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17035 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17036 | { | |
17037 | int is_this = 0; | |
17038 | struct dwarf2_cu *arg_cu = cu; | |
17039 | const char *name = dwarf2_name (child_die, cu); | |
17040 | ||
17041 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 17042 | if (attr != nullptr) |
3ce3b1ba PA |
17043 | { |
17044 | /* If the compiler emits this, use it. */ | |
17045 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17046 | is_this = 1; | |
17047 | } | |
17048 | else if (name && strcmp (name, "this") == 0) | |
17049 | /* Function definitions will have the argument names. */ | |
17050 | is_this = 1; | |
17051 | else if (name == NULL && iparams == 0) | |
17052 | /* Declarations may not have the names, so like | |
17053 | elsewhere in GDB, assume an artificial first | |
17054 | argument is "this". */ | |
17055 | is_this = 1; | |
17056 | ||
17057 | if (is_this) | |
17058 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17059 | arg_type, 0); | |
17060 | } | |
17061 | ||
17062 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
17063 | iparams++; |
17064 | } | |
436c571c | 17065 | child_die = child_die->sibling; |
c906108c SS |
17066 | } |
17067 | } | |
17068 | ||
76c10ea2 | 17069 | return ftype; |
c906108c SS |
17070 | } |
17071 | ||
f792889a | 17072 | static struct type * |
e7c27a73 | 17073 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17074 | { |
518817b3 | 17075 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 17076 | const char *name = NULL; |
3c8e0968 | 17077 | struct type *this_type, *target_type; |
c906108c | 17078 | |
94af9270 | 17079 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
17080 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
17081 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 17082 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17083 | target_type = die_type (die, cu); |
17084 | if (target_type != this_type) | |
17085 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17086 | else | |
17087 | { | |
17088 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17089 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 17090 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
17091 | "- DIE at %s [in module %s]"), |
17092 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17093 | TYPE_TARGET_TYPE (this_type) = NULL; |
17094 | } | |
e4003a34 TV |
17095 | if (name == NULL) |
17096 | { | |
17097 | /* Gcc-7 and before supports -feliminate-dwarf2-dups, which generates | |
17098 | anonymous typedefs, which is, strictly speaking, invalid DWARF. | |
17099 | Handle these by just returning the target type, rather than | |
17100 | constructing an anonymous typedef type and trying to handle this | |
17101 | elsewhere. */ | |
17102 | set_die_type (die, target_type, cu); | |
17103 | return target_type; | |
17104 | } | |
f792889a | 17105 | return this_type; |
c906108c SS |
17106 | } |
17107 | ||
9b790ce7 UW |
17108 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17109 | (which may be different from NAME) to the architecture back-end to allow | |
17110 | it to guess the correct format if necessary. */ | |
17111 | ||
17112 | static struct type * | |
17113 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 17114 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 | 17115 | { |
08feed99 | 17116 | struct gdbarch *gdbarch = objfile->arch (); |
9b790ce7 UW |
17117 | const struct floatformat **format; |
17118 | struct type *type; | |
17119 | ||
17120 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17121 | if (format) | |
103a685e | 17122 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 17123 | else |
77b7c781 | 17124 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17125 | |
17126 | return type; | |
17127 | } | |
17128 | ||
eb77c9df AB |
17129 | /* Allocate an integer type of size BITS and name NAME. */ |
17130 | ||
17131 | static struct type * | |
17132 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
17133 | int bits, int unsigned_p, const char *name) | |
17134 | { | |
17135 | struct type *type; | |
17136 | ||
17137 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
17138 | instead of using DW_TAG_unspecified_type. This has been seen on | |
17139 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
17140 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
17141 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
17142 | type = objfile_type (objfile)->builtin_void; |
17143 | else | |
17144 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
17145 | ||
17146 | return type; | |
17147 | } | |
17148 | ||
8bdc1658 AB |
17149 | /* Initialise and return a floating point type of size BITS suitable for |
17150 | use as a component of a complex number. The NAME_HINT is passed through | |
17151 | when initialising the floating point type and is the name of the complex | |
17152 | type. | |
17153 | ||
17154 | As DWARF doesn't currently provide an explicit name for the components | |
17155 | of a complex number, but it can be helpful to have these components | |
17156 | named, we try to select a suitable name based on the size of the | |
17157 | component. */ | |
17158 | static struct type * | |
17159 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
17160 | struct objfile *objfile, | |
103a685e TT |
17161 | int bits, const char *name_hint, |
17162 | enum bfd_endian byte_order) | |
8bdc1658 | 17163 | { |
08feed99 | 17164 | gdbarch *gdbarch = objfile->arch (); |
8bdc1658 AB |
17165 | struct type *tt = nullptr; |
17166 | ||
35add35e AB |
17167 | /* Try to find a suitable floating point builtin type of size BITS. |
17168 | We're going to use the name of this type as the name for the complex | |
17169 | target type that we are about to create. */ | |
1db455a7 | 17170 | switch (cu->language) |
8bdc1658 | 17171 | { |
1db455a7 AB |
17172 | case language_fortran: |
17173 | switch (bits) | |
17174 | { | |
17175 | case 32: | |
17176 | tt = builtin_f_type (gdbarch)->builtin_real; | |
17177 | break; | |
17178 | case 64: | |
17179 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
17180 | break; | |
17181 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17182 | case 128: | |
17183 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
17184 | break; | |
17185 | } | |
8bdc1658 | 17186 | break; |
1db455a7 AB |
17187 | default: |
17188 | switch (bits) | |
17189 | { | |
17190 | case 32: | |
17191 | tt = builtin_type (gdbarch)->builtin_float; | |
17192 | break; | |
17193 | case 64: | |
17194 | tt = builtin_type (gdbarch)->builtin_double; | |
17195 | break; | |
17196 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17197 | case 128: | |
17198 | tt = builtin_type (gdbarch)->builtin_long_double; | |
17199 | break; | |
17200 | } | |
8bdc1658 AB |
17201 | break; |
17202 | } | |
17203 | ||
35add35e AB |
17204 | /* If the type we found doesn't match the size we were looking for, then |
17205 | pretend we didn't find a type at all, the complex target type we | |
17206 | create will then be nameless. */ | |
a12e5744 | 17207 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
17208 | tt = nullptr; |
17209 | ||
8bdc1658 | 17210 | const char *name = (tt == nullptr) ? nullptr : TYPE_NAME (tt); |
103a685e | 17211 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
17212 | } |
17213 | ||
c906108c SS |
17214 | /* Find a representation of a given base type and install |
17215 | it in the TYPE field of the die. */ | |
17216 | ||
f792889a | 17217 | static struct type * |
e7c27a73 | 17218 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17219 | { |
518817b3 | 17220 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
17221 | struct type *type; |
17222 | struct attribute *attr; | |
19f392bc | 17223 | int encoding = 0, bits = 0; |
15d034d0 | 17224 | const char *name; |
34877895 | 17225 | gdbarch *arch; |
c906108c | 17226 | |
e142c38c | 17227 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
435d3d88 | 17228 | if (attr != nullptr) |
34877895 | 17229 | encoding = DW_UNSND (attr); |
e142c38c | 17230 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17231 | if (attr != nullptr) |
34877895 | 17232 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
39cbfefa | 17233 | name = dwarf2_name (die, cu); |
6ccb9162 | 17234 | if (!name) |
34877895 | 17235 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e | 17236 | |
08feed99 | 17237 | arch = objfile->arch (); |
103a685e TT |
17238 | enum bfd_endian byte_order = gdbarch_byte_order (arch); |
17239 | ||
34877895 PJ |
17240 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
17241 | if (attr) | |
103a685e TT |
17242 | { |
17243 | int endianity = DW_UNSND (attr); | |
17244 | ||
17245 | switch (endianity) | |
17246 | { | |
17247 | case DW_END_big: | |
17248 | byte_order = BFD_ENDIAN_BIG; | |
17249 | break; | |
17250 | case DW_END_little: | |
17251 | byte_order = BFD_ENDIAN_LITTLE; | |
17252 | break; | |
17253 | default: | |
17254 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
17255 | break; | |
17256 | } | |
17257 | } | |
6ccb9162 UW |
17258 | |
17259 | switch (encoding) | |
c906108c | 17260 | { |
6ccb9162 UW |
17261 | case DW_ATE_address: |
17262 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17263 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17264 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17265 | break; |
17266 | case DW_ATE_boolean: | |
19f392bc | 17267 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17268 | break; |
17269 | case DW_ATE_complex_float: | |
103a685e TT |
17270 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
17271 | byte_order); | |
93689ce9 TT |
17272 | if (TYPE_CODE (type) == TYPE_CODE_ERROR) |
17273 | { | |
17274 | if (name == nullptr) | |
17275 | { | |
17276 | struct obstack *obstack | |
17277 | = &cu->per_cu->dwarf2_per_objfile->objfile->objfile_obstack; | |
17278 | name = obconcat (obstack, "_Complex ", TYPE_NAME (type), | |
17279 | nullptr); | |
17280 | } | |
17281 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); | |
17282 | } | |
17283 | else | |
17284 | type = init_complex_type (name, type); | |
6ccb9162 UW |
17285 | break; |
17286 | case DW_ATE_decimal_float: | |
19f392bc | 17287 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
17288 | break; |
17289 | case DW_ATE_float: | |
103a685e | 17290 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
17291 | break; |
17292 | case DW_ATE_signed: | |
eb77c9df | 17293 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17294 | break; |
17295 | case DW_ATE_unsigned: | |
3b2b8fea TT |
17296 | if (cu->language == language_fortran |
17297 | && name | |
61012eef | 17298 | && startswith (name, "character(")) |
19f392bc UW |
17299 | type = init_character_type (objfile, bits, 1, name); |
17300 | else | |
eb77c9df | 17301 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
17302 | break; |
17303 | case DW_ATE_signed_char: | |
6e70227d | 17304 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
17305 | || cu->language == language_pascal |
17306 | || cu->language == language_fortran) | |
19f392bc UW |
17307 | type = init_character_type (objfile, bits, 0, name); |
17308 | else | |
eb77c9df | 17309 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17310 | break; |
17311 | case DW_ATE_unsigned_char: | |
868a0084 | 17312 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 17313 | || cu->language == language_pascal |
c44af4eb TT |
17314 | || cu->language == language_fortran |
17315 | || cu->language == language_rust) | |
19f392bc UW |
17316 | type = init_character_type (objfile, bits, 1, name); |
17317 | else | |
eb77c9df | 17318 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 17319 | break; |
75079b2b | 17320 | case DW_ATE_UTF: |
53e710ac | 17321 | { |
53e710ac PA |
17322 | if (bits == 16) |
17323 | type = builtin_type (arch)->builtin_char16; | |
17324 | else if (bits == 32) | |
17325 | type = builtin_type (arch)->builtin_char32; | |
17326 | else | |
17327 | { | |
b98664d3 | 17328 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 17329 | bits); |
eb77c9df | 17330 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
17331 | } |
17332 | return set_die_type (die, type, cu); | |
17333 | } | |
75079b2b TT |
17334 | break; |
17335 | ||
6ccb9162 | 17336 | default: |
b98664d3 | 17337 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 17338 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 17339 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17340 | break; |
c906108c | 17341 | } |
6ccb9162 | 17342 | |
0114d602 | 17343 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17344 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17345 | |
2b4424c3 TT |
17346 | maybe_set_alignment (cu, die, type); |
17347 | ||
103a685e | 17348 | TYPE_ENDIANITY_NOT_DEFAULT (type) = gdbarch_byte_order (arch) != byte_order; |
34877895 | 17349 | |
f792889a | 17350 | return set_die_type (die, type, cu); |
c906108c SS |
17351 | } |
17352 | ||
80180f79 SA |
17353 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17354 | resulting value of the attribute into struct bound_prop. | |
17355 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17356 | ||
17357 | static int | |
17358 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
17359 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
17360 | struct type *default_type) | |
80180f79 SA |
17361 | { |
17362 | struct dwarf2_property_baton *baton; | |
518817b3 SM |
17363 | struct obstack *obstack |
17364 | = &cu->per_cu->dwarf2_per_objfile->objfile->objfile_obstack; | |
80180f79 | 17365 | |
9a49df9d AB |
17366 | gdb_assert (default_type != NULL); |
17367 | ||
80180f79 SA |
17368 | if (attr == NULL || prop == NULL) |
17369 | return 0; | |
17370 | ||
4fc6c0d5 | 17371 | if (attr->form_is_block ()) |
80180f79 | 17372 | { |
8d749320 | 17373 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17374 | baton->property_type = default_type; |
80180f79 SA |
17375 | baton->locexpr.per_cu = cu->per_cu; |
17376 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
17377 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
216a7e6b AB |
17378 | switch (attr->name) |
17379 | { | |
17380 | case DW_AT_string_length: | |
17381 | baton->locexpr.is_reference = true; | |
17382 | break; | |
17383 | default: | |
17384 | baton->locexpr.is_reference = false; | |
17385 | break; | |
17386 | } | |
80180f79 SA |
17387 | prop->data.baton = baton; |
17388 | prop->kind = PROP_LOCEXPR; | |
17389 | gdb_assert (prop->data.baton != NULL); | |
17390 | } | |
cd6c91b4 | 17391 | else if (attr->form_is_ref ()) |
80180f79 SA |
17392 | { |
17393 | struct dwarf2_cu *target_cu = cu; | |
17394 | struct die_info *target_die; | |
17395 | struct attribute *target_attr; | |
17396 | ||
17397 | target_die = follow_die_ref (die, attr, &target_cu); | |
17398 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17399 | if (target_attr == NULL) |
17400 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17401 | target_cu); | |
80180f79 SA |
17402 | if (target_attr == NULL) |
17403 | return 0; | |
17404 | ||
df25ebbd | 17405 | switch (target_attr->name) |
80180f79 | 17406 | { |
df25ebbd | 17407 | case DW_AT_location: |
cd6c91b4 | 17408 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 17409 | { |
8d749320 | 17410 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17411 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17412 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
17413 | prop->data.baton = baton; | |
17414 | prop->kind = PROP_LOCLIST; | |
17415 | gdb_assert (prop->data.baton != NULL); | |
17416 | } | |
4fc6c0d5 | 17417 | else if (target_attr->form_is_block ()) |
df25ebbd | 17418 | { |
8d749320 | 17419 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17420 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17421 | baton->locexpr.per_cu = cu->per_cu; |
17422 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
17423 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
9a49df9d | 17424 | baton->locexpr.is_reference = true; |
df25ebbd JB |
17425 | prop->data.baton = baton; |
17426 | prop->kind = PROP_LOCEXPR; | |
17427 | gdb_assert (prop->data.baton != NULL); | |
17428 | } | |
17429 | else | |
17430 | { | |
17431 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17432 | "dynamic property"); | |
17433 | return 0; | |
17434 | } | |
17435 | break; | |
17436 | case DW_AT_data_member_location: | |
17437 | { | |
17438 | LONGEST offset; | |
17439 | ||
17440 | if (!handle_data_member_location (target_die, target_cu, | |
17441 | &offset)) | |
17442 | return 0; | |
17443 | ||
8d749320 | 17444 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17445 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 17446 | target_cu); |
df25ebbd JB |
17447 | baton->offset_info.offset = offset; |
17448 | baton->offset_info.type = die_type (target_die, target_cu); | |
17449 | prop->data.baton = baton; | |
17450 | prop->kind = PROP_ADDR_OFFSET; | |
17451 | break; | |
17452 | } | |
80180f79 SA |
17453 | } |
17454 | } | |
cd6c91b4 | 17455 | else if (attr->form_is_constant ()) |
80180f79 | 17456 | { |
0826b30a | 17457 | prop->data.const_val = attr->constant_value (0); |
80180f79 SA |
17458 | prop->kind = PROP_CONST; |
17459 | } | |
17460 | else | |
17461 | { | |
17462 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
17463 | dwarf2_name (die, cu)); | |
17464 | return 0; | |
17465 | } | |
17466 | ||
17467 | return 1; | |
17468 | } | |
17469 | ||
09ba997f | 17470 | /* See read.h. */ |
9a49df9d | 17471 | |
09ba997f TT |
17472 | struct type * |
17473 | dwarf2_per_cu_data::int_type (int size_in_bytes, bool unsigned_p) const | |
9a49df9d | 17474 | { |
09ba997f | 17475 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
9a49df9d AB |
17476 | struct type *int_type; |
17477 | ||
17478 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
17479 | #define TRY_TYPE(F) \ |
17480 | int_type = (unsigned_p \ | |
17481 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
17482 | : objfile_type (objfile)->builtin_ ## F); \ | |
17483 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
17484 | return int_type |
17485 | ||
17486 | TRY_TYPE (char); | |
17487 | TRY_TYPE (short); | |
17488 | TRY_TYPE (int); | |
17489 | TRY_TYPE (long); | |
17490 | TRY_TYPE (long_long); | |
17491 | ||
17492 | #undef TRY_TYPE | |
17493 | ||
17494 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
17495 | } | |
17496 | ||
09ba997f | 17497 | /* See read.h. */ |
11a8b164 | 17498 | |
09ba997f TT |
17499 | struct type * |
17500 | dwarf2_per_cu_data::addr_sized_int_type (bool unsigned_p) const | |
11a8b164 | 17501 | { |
09ba997f TT |
17502 | int addr_size = this->addr_size (); |
17503 | return int_type (addr_size, unsigned_p); | |
11a8b164 AB |
17504 | } |
17505 | ||
b86352cf AB |
17506 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
17507 | present (which is valid) then compute the default type based on the | |
17508 | compilation units address size. */ | |
17509 | ||
17510 | static struct type * | |
17511 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
17512 | { | |
17513 | struct type *index_type = die_type (die, cu); | |
17514 | ||
17515 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
17516 | without specifying a base type. | |
17517 | In that case, the base type must be set to the type of | |
17518 | the lower bound, upper bound or count, in that order, if any of these | |
17519 | three attributes references an object that has a type. | |
17520 | If no base type is found, the Dwarf-2 specifications say that | |
17521 | a signed integer type of size equal to the size of an address should | |
17522 | be used. | |
17523 | For the following C code: `extern char gdb_int [];' | |
17524 | GCC produces an empty range DIE. | |
17525 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
17526 | high bound or count are not yet handled by this code. */ | |
17527 | if (TYPE_CODE (index_type) == TYPE_CODE_VOID) | |
09ba997f | 17528 | index_type = cu->per_cu->addr_sized_int_type (false); |
b86352cf AB |
17529 | |
17530 | return index_type; | |
17531 | } | |
17532 | ||
a02abb62 JB |
17533 | /* Read the given DW_AT_subrange DIE. */ |
17534 | ||
f792889a | 17535 | static struct type * |
a02abb62 JB |
17536 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
17537 | { | |
4c9ad8c2 | 17538 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
17539 | struct type *range_type; |
17540 | struct attribute *attr; | |
729efb13 | 17541 | struct dynamic_prop low, high; |
4fae6e18 | 17542 | int low_default_is_valid; |
c451ebe5 | 17543 | int high_bound_is_count = 0; |
15d034d0 | 17544 | const char *name; |
d359392f | 17545 | ULONGEST negative_mask; |
e77813c8 | 17546 | |
b86352cf AB |
17547 | orig_base_type = read_subrange_index_type (die, cu); |
17548 | ||
4c9ad8c2 TT |
17549 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
17550 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
17551 | creating the range type, but we use the result of check_typedef | |
17552 | when examining properties of the type. */ | |
17553 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 17554 | |
7e314c57 JK |
17555 | /* The die_type call above may have already set the type for this DIE. */ |
17556 | range_type = get_die_type (die, cu); | |
17557 | if (range_type) | |
17558 | return range_type; | |
17559 | ||
729efb13 SA |
17560 | low.kind = PROP_CONST; |
17561 | high.kind = PROP_CONST; | |
17562 | high.data.const_val = 0; | |
17563 | ||
4fae6e18 JK |
17564 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
17565 | omitting DW_AT_lower_bound. */ | |
17566 | switch (cu->language) | |
6e70227d | 17567 | { |
4fae6e18 JK |
17568 | case language_c: |
17569 | case language_cplus: | |
729efb13 | 17570 | low.data.const_val = 0; |
4fae6e18 JK |
17571 | low_default_is_valid = 1; |
17572 | break; | |
17573 | case language_fortran: | |
729efb13 | 17574 | low.data.const_val = 1; |
4fae6e18 JK |
17575 | low_default_is_valid = 1; |
17576 | break; | |
17577 | case language_d: | |
4fae6e18 | 17578 | case language_objc: |
c44af4eb | 17579 | case language_rust: |
729efb13 | 17580 | low.data.const_val = 0; |
4fae6e18 JK |
17581 | low_default_is_valid = (cu->header.version >= 4); |
17582 | break; | |
17583 | case language_ada: | |
17584 | case language_m2: | |
17585 | case language_pascal: | |
729efb13 | 17586 | low.data.const_val = 1; |
4fae6e18 JK |
17587 | low_default_is_valid = (cu->header.version >= 4); |
17588 | break; | |
17589 | default: | |
729efb13 | 17590 | low.data.const_val = 0; |
4fae6e18 JK |
17591 | low_default_is_valid = 0; |
17592 | break; | |
a02abb62 JB |
17593 | } |
17594 | ||
e142c38c | 17595 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 17596 | if (attr != nullptr) |
9a49df9d | 17597 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 17598 | else if (!low_default_is_valid) |
b98664d3 | 17599 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
17600 | "- DIE at %s [in module %s]"), |
17601 | sect_offset_str (die->sect_off), | |
518817b3 | 17602 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a02abb62 | 17603 | |
506f5c41 TV |
17604 | struct attribute *attr_ub, *attr_count; |
17605 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 17606 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 17607 | { |
506f5c41 | 17608 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 17609 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 17610 | { |
c451ebe5 SA |
17611 | /* If bounds are constant do the final calculation here. */ |
17612 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
17613 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
17614 | else | |
17615 | high_bound_is_count = 1; | |
c2ff108b | 17616 | } |
506f5c41 TV |
17617 | else |
17618 | { | |
17619 | if (attr_ub != NULL) | |
17620 | complaint (_("Unresolved DW_AT_upper_bound " | |
17621 | "- DIE at %s [in module %s]"), | |
17622 | sect_offset_str (die->sect_off), | |
17623 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17624 | if (attr_count != NULL) | |
17625 | complaint (_("Unresolved DW_AT_count " | |
17626 | "- DIE at %s [in module %s]"), | |
17627 | sect_offset_str (die->sect_off), | |
17628 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17629 | } | |
e77813c8 | 17630 | } |
a02abb62 | 17631 | |
4e962e74 TT |
17632 | LONGEST bias = 0; |
17633 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 17634 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
0826b30a | 17635 | bias = bias_attr->constant_value (0); |
4e962e74 | 17636 | |
dbb9c2b1 JB |
17637 | /* Normally, the DWARF producers are expected to use a signed |
17638 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
17639 | But this is unfortunately not always the case, as witnessed | |
17640 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
17641 | is used instead. To work around that ambiguity, we treat | |
17642 | the bounds as signed, and thus sign-extend their values, when | |
17643 | the base type is signed. */ | |
6e70227d | 17644 | negative_mask = |
d359392f | 17645 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
17646 | if (low.kind == PROP_CONST |
17647 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
17648 | low.data.const_val |= negative_mask; | |
17649 | if (high.kind == PROP_CONST | |
17650 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
17651 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 17652 | |
5bbd8269 AB |
17653 | /* Check for bit and byte strides. */ |
17654 | struct dynamic_prop byte_stride_prop; | |
17655 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
17656 | if (attr_byte_stride != nullptr) | |
17657 | { | |
09ba997f | 17658 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
5bbd8269 AB |
17659 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, |
17660 | prop_type); | |
17661 | } | |
17662 | ||
17663 | struct dynamic_prop bit_stride_prop; | |
17664 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
17665 | if (attr_bit_stride != nullptr) | |
17666 | { | |
17667 | /* It only makes sense to have either a bit or byte stride. */ | |
17668 | if (attr_byte_stride != nullptr) | |
17669 | { | |
17670 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
17671 | "- DIE at %s [in module %s]"), | |
17672 | sect_offset_str (die->sect_off), | |
17673 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17674 | attr_bit_stride = nullptr; | |
17675 | } | |
17676 | else | |
17677 | { | |
09ba997f | 17678 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
5bbd8269 AB |
17679 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, |
17680 | prop_type); | |
17681 | } | |
17682 | } | |
17683 | ||
17684 | if (attr_byte_stride != nullptr | |
17685 | || attr_bit_stride != nullptr) | |
17686 | { | |
17687 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
17688 | struct dynamic_prop *stride | |
17689 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
17690 | ||
17691 | range_type | |
17692 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
17693 | &high, bias, stride, byte_stride_p); | |
17694 | } | |
17695 | else | |
17696 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 17697 | |
c451ebe5 SA |
17698 | if (high_bound_is_count) |
17699 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
17700 | ||
c2ff108b JK |
17701 | /* Ada expects an empty array on no boundary attributes. */ |
17702 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 17703 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 17704 | |
39cbfefa DJ |
17705 | name = dwarf2_name (die, cu); |
17706 | if (name) | |
17707 | TYPE_NAME (range_type) = name; | |
6e70227d | 17708 | |
e142c38c | 17709 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17710 | if (attr != nullptr) |
a02abb62 JB |
17711 | TYPE_LENGTH (range_type) = DW_UNSND (attr); |
17712 | ||
2b4424c3 TT |
17713 | maybe_set_alignment (cu, die, range_type); |
17714 | ||
7e314c57 JK |
17715 | set_die_type (die, range_type, cu); |
17716 | ||
17717 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17718 | set_descriptive_type (range_type, die, cu); |
17719 | ||
7e314c57 | 17720 | return range_type; |
a02abb62 | 17721 | } |
6e70227d | 17722 | |
f792889a | 17723 | static struct type * |
81a17f79 JB |
17724 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
17725 | { | |
17726 | struct type *type; | |
81a17f79 | 17727 | |
518817b3 SM |
17728 | type = init_type (cu->per_cu->dwarf2_per_objfile->objfile, TYPE_CODE_VOID,0, |
17729 | NULL); | |
0114d602 | 17730 | TYPE_NAME (type) = dwarf2_name (die, cu); |
81a17f79 | 17731 | |
74a2f8ff | 17732 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 17733 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
17734 | such a type, we treat it as a stub, and try to resolve it later on, |
17735 | when needed. */ | |
17736 | if (cu->language == language_ada) | |
17737 | TYPE_STUB (type) = 1; | |
17738 | ||
f792889a | 17739 | return set_die_type (die, type, cu); |
81a17f79 | 17740 | } |
a02abb62 | 17741 | |
639d11d3 DC |
17742 | /* Read a single die and all its descendents. Set the die's sibling |
17743 | field to NULL; set other fields in the die correctly, and set all | |
17744 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
17745 | location of the info_ptr after reading all of those dies. PARENT | |
17746 | is the parent of the die in question. */ | |
17747 | ||
17748 | static struct die_info * | |
dee91e82 | 17749 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
17750 | const gdb_byte *info_ptr, |
17751 | const gdb_byte **new_info_ptr, | |
dee91e82 | 17752 | struct die_info *parent) |
639d11d3 DC |
17753 | { |
17754 | struct die_info *die; | |
d521ce57 | 17755 | const gdb_byte *cur_ptr; |
639d11d3 | 17756 | |
3e225074 | 17757 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, 0); |
1d325ec1 DJ |
17758 | if (die == NULL) |
17759 | { | |
17760 | *new_info_ptr = cur_ptr; | |
17761 | return NULL; | |
17762 | } | |
93311388 | 17763 | store_in_ref_table (die, reader->cu); |
639d11d3 | 17764 | |
3e225074 | 17765 | if (die->has_children) |
bf6af496 | 17766 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
17767 | else |
17768 | { | |
17769 | die->child = NULL; | |
17770 | *new_info_ptr = cur_ptr; | |
17771 | } | |
17772 | ||
17773 | die->sibling = NULL; | |
17774 | die->parent = parent; | |
17775 | return die; | |
17776 | } | |
17777 | ||
17778 | /* Read a die, all of its descendents, and all of its siblings; set | |
17779 | all of the fields of all of the dies correctly. Arguments are as | |
17780 | in read_die_and_children. */ | |
17781 | ||
17782 | static struct die_info * | |
bf6af496 | 17783 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
17784 | const gdb_byte *info_ptr, |
17785 | const gdb_byte **new_info_ptr, | |
bf6af496 | 17786 | struct die_info *parent) |
639d11d3 DC |
17787 | { |
17788 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 17789 | const gdb_byte *cur_ptr; |
639d11d3 | 17790 | |
c906108c | 17791 | cur_ptr = info_ptr; |
639d11d3 DC |
17792 | first_die = last_sibling = NULL; |
17793 | ||
17794 | while (1) | |
c906108c | 17795 | { |
639d11d3 | 17796 | struct die_info *die |
dee91e82 | 17797 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 17798 | |
1d325ec1 | 17799 | if (die == NULL) |
c906108c | 17800 | { |
639d11d3 DC |
17801 | *new_info_ptr = cur_ptr; |
17802 | return first_die; | |
c906108c | 17803 | } |
1d325ec1 DJ |
17804 | |
17805 | if (!first_die) | |
17806 | first_die = die; | |
c906108c | 17807 | else |
1d325ec1 DJ |
17808 | last_sibling->sibling = die; |
17809 | ||
17810 | last_sibling = die; | |
c906108c | 17811 | } |
c906108c SS |
17812 | } |
17813 | ||
bf6af496 DE |
17814 | /* Read a die, all of its descendents, and all of its siblings; set |
17815 | all of the fields of all of the dies correctly. Arguments are as | |
17816 | in read_die_and_children. | |
17817 | This the main entry point for reading a DIE and all its children. */ | |
17818 | ||
17819 | static struct die_info * | |
17820 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
17821 | const gdb_byte *info_ptr, |
17822 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
17823 | struct die_info *parent) |
17824 | { | |
17825 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
17826 | new_info_ptr, parent); | |
17827 | ||
b4f54984 | 17828 | if (dwarf_die_debug) |
bf6af496 DE |
17829 | { |
17830 | fprintf_unfiltered (gdb_stdlog, | |
17831 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 17832 | reader->die_section->get_name (), |
bf6af496 DE |
17833 | (unsigned) (info_ptr - reader->die_section->buffer), |
17834 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 17835 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
17836 | } |
17837 | ||
17838 | return die; | |
17839 | } | |
17840 | ||
3019eac3 DE |
17841 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
17842 | attributes. | |
17843 | The caller is responsible for filling in the extra attributes | |
17844 | and updating (*DIEP)->num_attrs. | |
17845 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 17846 | except for its child, sibling, and parent fields. */ |
93311388 | 17847 | |
d521ce57 | 17848 | static const gdb_byte * |
3019eac3 | 17849 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 17850 | struct die_info **diep, const gdb_byte *info_ptr, |
3e225074 | 17851 | int num_extra_attrs) |
93311388 | 17852 | { |
b64f50a1 | 17853 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
17854 | struct abbrev_info *abbrev; |
17855 | struct die_info *die; | |
17856 | struct dwarf2_cu *cu = reader->cu; | |
17857 | bfd *abfd = reader->abfd; | |
17858 | ||
9c541725 | 17859 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
17860 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
17861 | info_ptr += bytes_read; | |
17862 | if (!abbrev_number) | |
17863 | { | |
17864 | *diep = NULL; | |
93311388 DE |
17865 | return info_ptr; |
17866 | } | |
17867 | ||
685af9cd | 17868 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 17869 | if (!abbrev) |
348e048f DE |
17870 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
17871 | abbrev_number, | |
17872 | bfd_get_filename (abfd)); | |
17873 | ||
3019eac3 | 17874 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 17875 | die->sect_off = sect_off; |
93311388 DE |
17876 | die->tag = abbrev->tag; |
17877 | die->abbrev = abbrev_number; | |
3e225074 | 17878 | die->has_children = abbrev->has_children; |
93311388 | 17879 | |
3019eac3 DE |
17880 | /* Make the result usable. |
17881 | The caller needs to update num_attrs after adding the extra | |
17882 | attributes. */ | |
93311388 DE |
17883 | die->num_attrs = abbrev->num_attrs; |
17884 | ||
18a8505e | 17885 | std::vector<int> indexes_that_need_reprocess; |
93311388 | 17886 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e AT |
17887 | { |
17888 | bool need_reprocess; | |
17889 | info_ptr = | |
17890 | read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], | |
17891 | info_ptr, &need_reprocess); | |
17892 | if (need_reprocess) | |
17893 | indexes_that_need_reprocess.push_back (i); | |
17894 | } | |
17895 | ||
052c8bb8 | 17896 | struct attribute *attr = die->attr (DW_AT_str_offsets_base); |
18a8505e AT |
17897 | if (attr != nullptr) |
17898 | cu->str_offsets_base = DW_UNSND (attr); | |
93311388 | 17899 | |
41144253 | 17900 | attr = die->attr (DW_AT_loclists_base); |
17901 | if (attr != nullptr) | |
17902 | cu->loclist_base = DW_UNSND (attr); | |
17903 | ||
a39fdb41 | 17904 | auto maybe_addr_base = die->addr_base (); |
18a8505e AT |
17905 | if (maybe_addr_base.has_value ()) |
17906 | cu->addr_base = *maybe_addr_base; | |
17907 | for (int index : indexes_that_need_reprocess) | |
17908 | read_attribute_reprocess (reader, &die->attrs[index]); | |
93311388 | 17909 | *diep = die; |
93311388 DE |
17910 | return info_ptr; |
17911 | } | |
17912 | ||
3019eac3 DE |
17913 | /* Read a die and all its attributes. |
17914 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 17915 | except for its child, sibling, and parent fields. */ |
3019eac3 | 17916 | |
d521ce57 | 17917 | static const gdb_byte * |
3019eac3 | 17918 | read_full_die (const struct die_reader_specs *reader, |
3e225074 | 17919 | struct die_info **diep, const gdb_byte *info_ptr) |
3019eac3 | 17920 | { |
d521ce57 | 17921 | const gdb_byte *result; |
bf6af496 | 17922 | |
3e225074 | 17923 | result = read_full_die_1 (reader, diep, info_ptr, 0); |
bf6af496 | 17924 | |
b4f54984 | 17925 | if (dwarf_die_debug) |
bf6af496 DE |
17926 | { |
17927 | fprintf_unfiltered (gdb_stdlog, | |
17928 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 17929 | reader->die_section->get_name (), |
bf6af496 DE |
17930 | (unsigned) (info_ptr - reader->die_section->buffer), |
17931 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 17932 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
17933 | } |
17934 | ||
17935 | return result; | |
3019eac3 | 17936 | } |
433df2d4 | 17937 | \f |
c906108c | 17938 | |
72bf9492 DJ |
17939 | /* Returns nonzero if TAG represents a type that we might generate a partial |
17940 | symbol for. */ | |
17941 | ||
17942 | static int | |
17943 | is_type_tag_for_partial (int tag) | |
17944 | { | |
17945 | switch (tag) | |
17946 | { | |
17947 | #if 0 | |
17948 | /* Some types that would be reasonable to generate partial symbols for, | |
17949 | that we don't at present. */ | |
17950 | case DW_TAG_array_type: | |
17951 | case DW_TAG_file_type: | |
17952 | case DW_TAG_ptr_to_member_type: | |
17953 | case DW_TAG_set_type: | |
17954 | case DW_TAG_string_type: | |
17955 | case DW_TAG_subroutine_type: | |
17956 | #endif | |
17957 | case DW_TAG_base_type: | |
17958 | case DW_TAG_class_type: | |
680b30c7 | 17959 | case DW_TAG_interface_type: |
72bf9492 DJ |
17960 | case DW_TAG_enumeration_type: |
17961 | case DW_TAG_structure_type: | |
17962 | case DW_TAG_subrange_type: | |
17963 | case DW_TAG_typedef: | |
17964 | case DW_TAG_union_type: | |
17965 | return 1; | |
17966 | default: | |
17967 | return 0; | |
17968 | } | |
17969 | } | |
17970 | ||
17971 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
17972 | ||
17973 | static struct partial_die_info * | |
dee91e82 | 17974 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 17975 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 17976 | { |
dee91e82 | 17977 | struct dwarf2_cu *cu = reader->cu; |
518817b3 | 17978 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
72bf9492 | 17979 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 17980 | unsigned int bytes_read; |
5afb4e99 | 17981 | unsigned int load_all = 0; |
72bf9492 DJ |
17982 | int nesting_level = 1; |
17983 | ||
17984 | parent_die = NULL; | |
17985 | last_die = NULL; | |
17986 | ||
7adf1e79 DE |
17987 | gdb_assert (cu->per_cu != NULL); |
17988 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
17989 | load_all = 1; |
17990 | ||
72bf9492 DJ |
17991 | cu->partial_dies |
17992 | = htab_create_alloc_ex (cu->header.length / 12, | |
17993 | partial_die_hash, | |
17994 | partial_die_eq, | |
17995 | NULL, | |
17996 | &cu->comp_unit_obstack, | |
17997 | hashtab_obstack_allocate, | |
17998 | dummy_obstack_deallocate); | |
17999 | ||
72bf9492 DJ |
18000 | while (1) |
18001 | { | |
685af9cd | 18002 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
18003 | |
18004 | /* A NULL abbrev means the end of a series of children. */ | |
18005 | if (abbrev == NULL) | |
18006 | { | |
18007 | if (--nesting_level == 0) | |
cd9983dd YQ |
18008 | return first_die; |
18009 | ||
72bf9492 DJ |
18010 | info_ptr += bytes_read; |
18011 | last_die = parent_die; | |
18012 | parent_die = parent_die->die_parent; | |
18013 | continue; | |
18014 | } | |
18015 | ||
98bfdba5 PA |
18016 | /* Check for template arguments. We never save these; if |
18017 | they're seen, we just mark the parent, and go on our way. */ | |
18018 | if (parent_die != NULL | |
18019 | && cu->language == language_cplus | |
18020 | && (abbrev->tag == DW_TAG_template_type_param | |
18021 | || abbrev->tag == DW_TAG_template_value_param)) | |
18022 | { | |
18023 | parent_die->has_template_arguments = 1; | |
18024 | ||
18025 | if (!load_all) | |
18026 | { | |
18027 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18028 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18029 | continue; |
18030 | } | |
18031 | } | |
18032 | ||
0d99eb77 | 18033 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18034 | Skip their other children. */ |
18035 | if (!load_all | |
18036 | && cu->language == language_cplus | |
18037 | && parent_die != NULL | |
18038 | && parent_die->tag == DW_TAG_subprogram) | |
18039 | { | |
dee91e82 | 18040 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18041 | continue; |
18042 | } | |
18043 | ||
5afb4e99 DJ |
18044 | /* Check whether this DIE is interesting enough to save. Normally |
18045 | we would not be interested in members here, but there may be | |
18046 | later variables referencing them via DW_AT_specification (for | |
18047 | static members). */ | |
18048 | if (!load_all | |
18049 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18050 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18051 | && abbrev->tag != DW_TAG_enumerator |
18052 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 18053 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 18054 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18055 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18056 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18057 | && abbrev->tag != DW_TAG_module |
95554aad | 18058 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18059 | && abbrev->tag != DW_TAG_imported_unit |
18060 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18061 | { |
18062 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18063 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18064 | continue; |
18065 | } | |
18066 | ||
6f06d47b YQ |
18067 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
18068 | abbrev); | |
cd9983dd | 18069 | |
48fbe735 | 18070 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
18071 | |
18072 | /* This two-pass algorithm for processing partial symbols has a | |
18073 | high cost in cache pressure. Thus, handle some simple cases | |
18074 | here which cover the majority of C partial symbols. DIEs | |
18075 | which neither have specification tags in them, nor could have | |
18076 | specification tags elsewhere pointing at them, can simply be | |
18077 | processed and discarded. | |
18078 | ||
18079 | This segment is also optional; scan_partial_symbols and | |
18080 | add_partial_symbol will handle these DIEs if we chain | |
18081 | them in normally. When compilers which do not emit large | |
18082 | quantities of duplicate debug information are more common, | |
18083 | this code can probably be removed. */ | |
18084 | ||
18085 | /* Any complete simple types at the top level (pretty much all | |
18086 | of them, for a language without namespaces), can be processed | |
18087 | directly. */ | |
18088 | if (parent_die == NULL | |
cd9983dd YQ |
18089 | && pdi.has_specification == 0 |
18090 | && pdi.is_declaration == 0 | |
18091 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
18092 | || pdi.tag == DW_TAG_base_type | |
18093 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 18094 | { |
cd9983dd | 18095 | if (building_psymtab && pdi.name != NULL) |
31edb802 | 18096 | add_psymbol_to_list (pdi.name, false, |
79748972 | 18097 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 18098 | psymbol_placement::STATIC, |
1762568f | 18099 | 0, cu->language, objfile); |
cd9983dd | 18100 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18101 | continue; |
18102 | } | |
18103 | ||
d8228535 JK |
18104 | /* The exception for DW_TAG_typedef with has_children above is |
18105 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 18106 | type_name_or_error will error on such types later. |
d8228535 JK |
18107 | |
18108 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18109 | it could not find the child DIEs referenced later, this is checked | |
18110 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18111 | ||
cd9983dd | 18112 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 18113 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 18114 | "- DIE at %s [in module %s]"), |
cd9983dd | 18115 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 18116 | |
72bf9492 DJ |
18117 | /* If we're at the second level, and we're an enumerator, and |
18118 | our parent has no specification (meaning possibly lives in a | |
18119 | namespace elsewhere), then we can add the partial symbol now | |
18120 | instead of queueing it. */ | |
cd9983dd | 18121 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
18122 | && parent_die != NULL |
18123 | && parent_die->die_parent == NULL | |
18124 | && parent_die->tag == DW_TAG_enumeration_type | |
18125 | && parent_die->has_specification == 0) | |
18126 | { | |
cd9983dd | 18127 | if (pdi.name == NULL) |
b98664d3 | 18128 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 18129 | else if (building_psymtab) |
31edb802 | 18130 | add_psymbol_to_list (pdi.name, false, |
79748972 | 18131 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 18132 | cu->language == language_cplus |
75aedd27 TT |
18133 | ? psymbol_placement::GLOBAL |
18134 | : psymbol_placement::STATIC, | |
1762568f | 18135 | 0, cu->language, objfile); |
72bf9492 | 18136 | |
cd9983dd | 18137 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18138 | continue; |
18139 | } | |
18140 | ||
cd9983dd | 18141 | struct partial_die_info *part_die |
6f06d47b | 18142 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 18143 | |
72bf9492 DJ |
18144 | /* We'll save this DIE so link it in. */ |
18145 | part_die->die_parent = parent_die; | |
18146 | part_die->die_sibling = NULL; | |
18147 | part_die->die_child = NULL; | |
18148 | ||
18149 | if (last_die && last_die == parent_die) | |
18150 | last_die->die_child = part_die; | |
18151 | else if (last_die) | |
18152 | last_die->die_sibling = part_die; | |
18153 | ||
18154 | last_die = part_die; | |
18155 | ||
18156 | if (first_die == NULL) | |
18157 | first_die = part_die; | |
18158 | ||
18159 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18160 | find interesting need to be in the hash table, because we | |
18161 | also have the parent/sibling/child chains; only those that we | |
18162 | might refer to by offset later during partial symbol reading. | |
18163 | ||
18164 | For now this means things that might have be the target of a | |
18165 | DW_AT_specification, DW_AT_abstract_origin, or | |
18166 | DW_AT_extension. DW_AT_extension will refer only to | |
18167 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18168 | many things under the function DIE, but we do not recurse | |
18169 | into function DIEs during partial symbol reading) and | |
18170 | possibly variables as well; DW_AT_specification refers to | |
18171 | declarations. Declarations ought to have the DW_AT_declaration | |
18172 | flag. It happens that GCC forgets to put it in sometimes, but | |
18173 | only for functions, not for types. | |
18174 | ||
18175 | Adding more things than necessary to the hash table is harmless | |
18176 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18177 | wasted time in find_partial_die, when we reread the compilation |
18178 | unit with load_all_dies set. */ | |
72bf9492 | 18179 | |
5afb4e99 | 18180 | if (load_all |
72929c62 | 18181 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18182 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18183 | || abbrev->tag == DW_TAG_variable |
18184 | || abbrev->tag == DW_TAG_namespace | |
18185 | || part_die->is_declaration) | |
18186 | { | |
18187 | void **slot; | |
18188 | ||
18189 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18190 | to_underlying (part_die->sect_off), |
18191 | INSERT); | |
72bf9492 DJ |
18192 | *slot = part_die; |
18193 | } | |
18194 | ||
72bf9492 | 18195 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 18196 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18197 | languages we have to, so that we can get at method physnames |
18198 | to infer fully qualified class names, for DW_AT_specification, | |
18199 | and for C++ template arguments. For C++, we also look one level | |
18200 | inside functions to find template arguments (if the name of the | |
18201 | function does not already contain the template arguments). | |
bc30ff58 | 18202 | |
0a4b0913 AB |
18203 | For Ada and Fortran, we need to scan the children of subprograms |
18204 | and lexical blocks as well because these languages allow the | |
18205 | definition of nested entities that could be interesting for the | |
18206 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 18207 | if (last_die->has_children |
5afb4e99 DJ |
18208 | && (load_all |
18209 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18210 | || last_die->tag == DW_TAG_module |
72bf9492 | 18211 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18212 | || (cu->language == language_cplus |
18213 | && last_die->tag == DW_TAG_subprogram | |
18214 | && (last_die->name == NULL | |
18215 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
18216 | || (cu->language != language_c |
18217 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18218 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18219 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 18220 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
18221 | || ((cu->language == language_ada |
18222 | || cu->language == language_fortran) | |
bc30ff58 JB |
18223 | && (last_die->tag == DW_TAG_subprogram |
18224 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18225 | { |
18226 | nesting_level++; | |
18227 | parent_die = last_die; | |
18228 | continue; | |
18229 | } | |
18230 | ||
18231 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18232 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18233 | |
18234 | /* Back to the top, do it again. */ | |
18235 | } | |
18236 | } | |
18237 | ||
6f06d47b YQ |
18238 | partial_die_info::partial_die_info (sect_offset sect_off_, |
18239 | struct abbrev_info *abbrev) | |
18240 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
18241 | { | |
18242 | } | |
18243 | ||
35cc7ed7 YQ |
18244 | /* Read a minimal amount of information into the minimal die structure. |
18245 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 18246 | |
48fbe735 YQ |
18247 | const gdb_byte * |
18248 | partial_die_info::read (const struct die_reader_specs *reader, | |
18249 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 18250 | { |
dee91e82 | 18251 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18252 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18253 | = cu->per_cu->dwarf2_per_objfile; | |
fa238c03 | 18254 | unsigned int i; |
c5aa993b | 18255 | int has_low_pc_attr = 0; |
c906108c | 18256 | int has_high_pc_attr = 0; |
91da1414 | 18257 | int high_pc_relative = 0; |
c906108c | 18258 | |
fd0a254f | 18259 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 18260 | { |
e7da7f8f | 18261 | attribute attr; |
18a8505e | 18262 | bool need_reprocess; |
e7da7f8f | 18263 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], |
18a8505e AT |
18264 | info_ptr, &need_reprocess); |
18265 | /* String and address offsets that need to do the reprocessing have | |
18266 | already been read at this point, so there is no need to wait until | |
18267 | the loop terminates to do the reprocessing. */ | |
18268 | if (need_reprocess) | |
e7da7f8f | 18269 | read_attribute_reprocess (reader, &attr); |
c906108c | 18270 | /* Store the data if it is of an attribute we want to keep in a |
c5aa993b | 18271 | partial symbol table. */ |
c906108c SS |
18272 | switch (attr.name) |
18273 | { | |
18274 | case DW_AT_name: | |
48fbe735 | 18275 | switch (tag) |
71c25dea TT |
18276 | { |
18277 | case DW_TAG_compile_unit: | |
95554aad | 18278 | case DW_TAG_partial_unit: |
348e048f | 18279 | case DW_TAG_type_unit: |
71c25dea TT |
18280 | /* Compilation units have a DW_AT_name that is a filename, not |
18281 | a source language identifier. */ | |
18282 | case DW_TAG_enumeration_type: | |
18283 | case DW_TAG_enumerator: | |
18284 | /* These tags always have simple identifiers already; no need | |
18285 | to canonicalize them. */ | |
48fbe735 | 18286 | name = DW_STRING (&attr); |
71c25dea TT |
18287 | break; |
18288 | default: | |
48fbe735 YQ |
18289 | { |
18290 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18291 | ||
18292 | name | |
be1e3d3e | 18293 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, objfile); |
48fbe735 | 18294 | } |
71c25dea TT |
18295 | break; |
18296 | } | |
c906108c | 18297 | break; |
31ef98ae | 18298 | case DW_AT_linkage_name: |
c906108c | 18299 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
18300 | /* Note that both forms of linkage name might appear. We |
18301 | assume they will be the same, and we only store the last | |
18302 | one we see. */ | |
48fbe735 | 18303 | linkage_name = DW_STRING (&attr); |
787de330 TT |
18304 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
18305 | See https://github.com/rust-lang/rust/issues/32925. */ | |
18306 | if (cu->language == language_rust && linkage_name != NULL | |
18307 | && strchr (linkage_name, '{') != NULL) | |
18308 | linkage_name = NULL; | |
c906108c SS |
18309 | break; |
18310 | case DW_AT_low_pc: | |
18311 | has_low_pc_attr = 1; | |
cd6c91b4 | 18312 | lowpc = attr.value_as_address (); |
c906108c SS |
18313 | break; |
18314 | case DW_AT_high_pc: | |
18315 | has_high_pc_attr = 1; | |
cd6c91b4 TT |
18316 | highpc = attr.value_as_address (); |
18317 | if (cu->header.version >= 4 && attr.form_is_constant ()) | |
31aa7e4e | 18318 | high_pc_relative = 1; |
c906108c SS |
18319 | break; |
18320 | case DW_AT_location: | |
0963b4bd | 18321 | /* Support the .debug_loc offsets. */ |
4fc6c0d5 | 18322 | if (attr.form_is_block ()) |
8e19ed76 | 18323 | { |
48fbe735 | 18324 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 18325 | } |
cd6c91b4 | 18326 | else if (attr.form_is_section_offset ()) |
8e19ed76 | 18327 | { |
4d3c2250 | 18328 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
18329 | } |
18330 | else | |
18331 | { | |
4d3c2250 KB |
18332 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
18333 | "partial symbol information"); | |
8e19ed76 | 18334 | } |
c906108c | 18335 | break; |
c906108c | 18336 | case DW_AT_external: |
48fbe735 | 18337 | is_external = DW_UNSND (&attr); |
c906108c SS |
18338 | break; |
18339 | case DW_AT_declaration: | |
48fbe735 | 18340 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
18341 | break; |
18342 | case DW_AT_type: | |
48fbe735 | 18343 | has_type = 1; |
c906108c SS |
18344 | break; |
18345 | case DW_AT_abstract_origin: | |
18346 | case DW_AT_specification: | |
72bf9492 | 18347 | case DW_AT_extension: |
48fbe735 | 18348 | has_specification = 1; |
0826b30a | 18349 | spec_offset = attr.get_ref_die_offset (); |
48fbe735 | 18350 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 | 18351 | || cu->per_cu->is_dwz); |
c906108c SS |
18352 | break; |
18353 | case DW_AT_sibling: | |
18354 | /* Ignore absolute siblings, they might point outside of | |
18355 | the current compile unit. */ | |
18356 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 18357 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 18358 | else |
b9502d3f | 18359 | { |
48fbe735 | 18360 | const gdb_byte *buffer = reader->buffer; |
0826b30a | 18361 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 18362 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
18363 | |
18364 | if (sibling_ptr < info_ptr) | |
b98664d3 | 18365 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 18366 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 18367 | reader->die_section->overflow_complaint (); |
b9502d3f | 18368 | else |
48fbe735 | 18369 | sibling = sibling_ptr; |
b9502d3f | 18370 | } |
c906108c | 18371 | break; |
fa4028e9 | 18372 | case DW_AT_byte_size: |
48fbe735 | 18373 | has_byte_size = 1; |
fa4028e9 | 18374 | break; |
ff908ebf | 18375 | case DW_AT_const_value: |
48fbe735 | 18376 | has_const_value = 1; |
ff908ebf | 18377 | break; |
68511cec CES |
18378 | case DW_AT_calling_convention: |
18379 | /* DWARF doesn't provide a way to identify a program's source-level | |
18380 | entry point. DW_AT_calling_convention attributes are only meant | |
18381 | to describe functions' calling conventions. | |
18382 | ||
18383 | However, because it's a necessary piece of information in | |
0c1b455e TT |
18384 | Fortran, and before DWARF 4 DW_CC_program was the only |
18385 | piece of debugging information whose definition refers to | |
18386 | a 'main program' at all, several compilers marked Fortran | |
18387 | main programs with DW_CC_program --- even when those | |
18388 | functions use the standard calling conventions. | |
18389 | ||
18390 | Although DWARF now specifies a way to provide this | |
18391 | information, we support this practice for backward | |
18392 | compatibility. */ | |
68511cec | 18393 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 18394 | && cu->language == language_fortran) |
48fbe735 | 18395 | main_subprogram = 1; |
68511cec | 18396 | break; |
481860b3 GB |
18397 | case DW_AT_inline: |
18398 | if (DW_UNSND (&attr) == DW_INL_inlined | |
18399 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 18400 | may_be_inlined = 1; |
481860b3 | 18401 | break; |
95554aad TT |
18402 | |
18403 | case DW_AT_import: | |
48fbe735 | 18404 | if (tag == DW_TAG_imported_unit) |
36586728 | 18405 | { |
0826b30a | 18406 | d.sect_off = attr.get_ref_die_offset (); |
48fbe735 | 18407 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 TT |
18408 | || cu->per_cu->is_dwz); |
18409 | } | |
95554aad TT |
18410 | break; |
18411 | ||
0c1b455e | 18412 | case DW_AT_main_subprogram: |
48fbe735 | 18413 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
18414 | break; |
18415 | ||
05caa1d2 TT |
18416 | case DW_AT_ranges: |
18417 | { | |
18418 | /* It would be nice to reuse dwarf2_get_pc_bounds here, | |
18419 | but that requires a full DIE, so instead we just | |
18420 | reimplement it. */ | |
18421 | int need_ranges_base = tag != DW_TAG_compile_unit; | |
18422 | unsigned int ranges_offset = (DW_UNSND (&attr) | |
18423 | + (need_ranges_base | |
18424 | ? cu->ranges_base | |
18425 | : 0)); | |
18426 | ||
18427 | /* Value of the DW_AT_ranges attribute is the offset in the | |
18428 | .debug_ranges section. */ | |
18429 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, | |
18430 | nullptr)) | |
18431 | has_pc_info = 1; | |
18432 | } | |
18433 | break; | |
18434 | ||
c906108c SS |
18435 | default: |
18436 | break; | |
18437 | } | |
18438 | } | |
18439 | ||
10d06d82 TT |
18440 | /* For Ada, if both the name and the linkage name appear, we prefer |
18441 | the latter. This lets "catch exception" work better, regardless | |
18442 | of the order in which the name and linkage name were emitted. | |
18443 | Really, though, this is just a workaround for the fact that gdb | |
18444 | doesn't store both the name and the linkage name. */ | |
18445 | if (cu->language == language_ada && linkage_name != nullptr) | |
18446 | name = linkage_name; | |
18447 | ||
91da1414 | 18448 | if (high_pc_relative) |
48fbe735 | 18449 | highpc += lowpc; |
91da1414 | 18450 | |
9373cf26 JK |
18451 | if (has_low_pc_attr && has_high_pc_attr) |
18452 | { | |
18453 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
18454 | eliminate duplicate copies of functions and vtables and such. | |
18455 | The linker will arbitrarily choose one and discard the others. | |
18456 | The AT_*_pc values for such functions refer to local labels in | |
18457 | these sections. If the section from that file was discarded, the | |
18458 | labels are not in the output, so the relocs get a value of 0. | |
18459 | If this is a discarded function, mark the pc bounds as invalid, | |
18460 | so that GDB will ignore it. */ | |
48fbe735 | 18461 | if (lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) |
9373cf26 | 18462 | { |
48fbe735 | 18463 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 18464 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 18465 | |
b98664d3 | 18466 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 18467 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18468 | paddress (gdbarch, lowpc), |
18469 | sect_offset_str (sect_off), | |
9d8780f0 | 18470 | objfile_name (objfile)); |
9373cf26 JK |
18471 | } |
18472 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 18473 | else if (lowpc >= highpc) |
9373cf26 | 18474 | { |
48fbe735 | 18475 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 18476 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 18477 | |
b98664d3 | 18478 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 18479 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18480 | paddress (gdbarch, lowpc), |
18481 | paddress (gdbarch, highpc), | |
18482 | sect_offset_str (sect_off), | |
9c541725 | 18483 | objfile_name (objfile)); |
9373cf26 JK |
18484 | } |
18485 | else | |
48fbe735 | 18486 | has_pc_info = 1; |
9373cf26 | 18487 | } |
85cbf3d3 | 18488 | |
c906108c SS |
18489 | return info_ptr; |
18490 | } | |
18491 | ||
72bf9492 DJ |
18492 | /* Find a cached partial DIE at OFFSET in CU. */ |
18493 | ||
d590ff25 YQ |
18494 | struct partial_die_info * |
18495 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
18496 | { |
18497 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 18498 | struct partial_die_info part_die (sect_off); |
72bf9492 | 18499 | |
9a3c8263 | 18500 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 18501 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 18502 | to_underlying (sect_off))); |
72bf9492 | 18503 | |
72bf9492 DJ |
18504 | return lookup_die; |
18505 | } | |
18506 | ||
348e048f DE |
18507 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
18508 | except in the case of .debug_types DIEs which do not reference | |
18509 | outside their CU (they do however referencing other types via | |
55f1336d | 18510 | DW_FORM_ref_sig8). */ |
72bf9492 | 18511 | |
122cf0f2 | 18512 | static const struct cu_partial_die_info |
9c541725 | 18513 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 18514 | { |
518817b3 SM |
18515 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18516 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18517 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5afb4e99 DJ |
18518 | struct dwarf2_per_cu_data *per_cu = NULL; |
18519 | struct partial_die_info *pd = NULL; | |
72bf9492 | 18520 | |
36586728 | 18521 | if (offset_in_dwz == cu->per_cu->is_dwz |
4057dfde | 18522 | && cu->header.offset_in_cu_p (sect_off)) |
5afb4e99 | 18523 | { |
d590ff25 | 18524 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 18525 | if (pd != NULL) |
fb816e8b | 18526 | return { cu, pd }; |
0d99eb77 DE |
18527 | /* We missed recording what we needed. |
18528 | Load all dies and try again. */ | |
18529 | per_cu = cu->per_cu; | |
5afb4e99 | 18530 | } |
0d99eb77 DE |
18531 | else |
18532 | { | |
18533 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 18534 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 18535 | { |
9d8780f0 SM |
18536 | error (_("Dwarf Error: Type Unit at offset %s contains" |
18537 | " external reference to offset %s [in module %s].\n"), | |
18538 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
18539 | bfd_get_filename (objfile->obfd)); |
18540 | } | |
9c541725 | 18541 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 18542 | dwarf2_per_objfile); |
72bf9492 | 18543 | |
0d99eb77 DE |
18544 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
18545 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 18546 | |
0d99eb77 | 18547 | per_cu->cu->last_used = 0; |
d590ff25 | 18548 | pd = per_cu->cu->find_partial_die (sect_off); |
0d99eb77 | 18549 | } |
5afb4e99 | 18550 | |
dee91e82 DE |
18551 | /* If we didn't find it, and not all dies have been loaded, |
18552 | load them all and try again. */ | |
18553 | ||
5afb4e99 DJ |
18554 | if (pd == NULL && per_cu->load_all_dies == 0) |
18555 | { | |
5afb4e99 | 18556 | per_cu->load_all_dies = 1; |
fd820528 DE |
18557 | |
18558 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
18559 | THIS_CU->cu may already be in use. So we can't just free it and | |
18560 | replace its DIEs with the ones we read in. Instead, we leave those | |
18561 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
18562 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
18563 | set. */ | |
dee91e82 | 18564 | load_partial_comp_unit (per_cu); |
5afb4e99 | 18565 | |
d590ff25 | 18566 | pd = per_cu->cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18567 | } |
18568 | ||
18569 | if (pd == NULL) | |
18570 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 18571 | _("could not find partial DIE %s " |
3e43a32a | 18572 | "in cache [from module %s]\n"), |
9d8780f0 | 18573 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
fb816e8b | 18574 | return { per_cu->cu, pd }; |
72bf9492 DJ |
18575 | } |
18576 | ||
abc72ce4 DE |
18577 | /* See if we can figure out if the class lives in a namespace. We do |
18578 | this by looking for a member function; its demangled name will | |
18579 | contain namespace info, if there is any. */ | |
18580 | ||
18581 | static void | |
18582 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
18583 | struct dwarf2_cu *cu) | |
18584 | { | |
18585 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
18586 | what template types look like, because the demangler | |
18587 | frequently doesn't give the same name as the debug info. We | |
18588 | could fix this by only using the demangled name to get the | |
18589 | prefix (but see comment in read_structure_type). */ | |
18590 | ||
18591 | struct partial_die_info *real_pdi; | |
18592 | struct partial_die_info *child_pdi; | |
18593 | ||
18594 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
18595 | we should not do this. We'll prepend the parent's fully qualified | |
18596 | name when we create the partial symbol. */ | |
18597 | ||
18598 | real_pdi = struct_pdi; | |
18599 | while (real_pdi->has_specification) | |
fb816e8b | 18600 | { |
122cf0f2 AB |
18601 | auto res = find_partial_die (real_pdi->spec_offset, |
18602 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
18603 | real_pdi = res.pdi; |
18604 | cu = res.cu; | |
18605 | } | |
abc72ce4 DE |
18606 | |
18607 | if (real_pdi->die_parent != NULL) | |
18608 | return; | |
18609 | ||
18610 | for (child_pdi = struct_pdi->die_child; | |
18611 | child_pdi != NULL; | |
18612 | child_pdi = child_pdi->die_sibling) | |
18613 | { | |
18614 | if (child_pdi->tag == DW_TAG_subprogram | |
18615 | && child_pdi->linkage_name != NULL) | |
18616 | { | |
43816ebc TT |
18617 | gdb::unique_xmalloc_ptr<char> actual_class_name |
18618 | (language_class_name_from_physname (cu->language_defn, | |
18619 | child_pdi->linkage_name)); | |
abc72ce4 DE |
18620 | if (actual_class_name != NULL) |
18621 | { | |
518817b3 | 18622 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
be1e3d3e | 18623 | struct_pdi->name = objfile->intern (actual_class_name.get ()); |
abc72ce4 DE |
18624 | } |
18625 | break; | |
18626 | } | |
18627 | } | |
18628 | } | |
18629 | ||
25c11aca TV |
18630 | /* Return true if a DIE with TAG may have the DW_AT_const_value |
18631 | attribute. */ | |
18632 | ||
18633 | static bool | |
18634 | can_have_DW_AT_const_value_p (enum dwarf_tag tag) | |
18635 | { | |
18636 | switch (tag) | |
18637 | { | |
18638 | case DW_TAG_constant: | |
18639 | case DW_TAG_enumerator: | |
18640 | case DW_TAG_formal_parameter: | |
18641 | case DW_TAG_template_value_param: | |
18642 | case DW_TAG_variable: | |
18643 | return true; | |
18644 | } | |
18645 | ||
18646 | return false; | |
18647 | } | |
18648 | ||
52356b79 YQ |
18649 | void |
18650 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 18651 | { |
abc72ce4 DE |
18652 | /* Once we've fixed up a die, there's no point in doing so again. |
18653 | This also avoids a memory leak if we were to call | |
18654 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 18655 | if (fixup_called) |
abc72ce4 DE |
18656 | return; |
18657 | ||
72bf9492 DJ |
18658 | /* If we found a reference attribute and the DIE has no name, try |
18659 | to find a name in the referred to DIE. */ | |
18660 | ||
52356b79 | 18661 | if (name == NULL && has_specification) |
72bf9492 DJ |
18662 | { |
18663 | struct partial_die_info *spec_die; | |
72bf9492 | 18664 | |
122cf0f2 | 18665 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
18666 | spec_die = res.pdi; |
18667 | cu = res.cu; | |
72bf9492 | 18668 | |
52356b79 | 18669 | spec_die->fixup (cu); |
72bf9492 DJ |
18670 | |
18671 | if (spec_die->name) | |
18672 | { | |
52356b79 | 18673 | name = spec_die->name; |
72bf9492 DJ |
18674 | |
18675 | /* Copy DW_AT_external attribute if it is set. */ | |
18676 | if (spec_die->is_external) | |
52356b79 | 18677 | is_external = spec_die->is_external; |
72bf9492 DJ |
18678 | } |
18679 | } | |
18680 | ||
25c11aca TV |
18681 | if (!has_const_value && has_specification |
18682 | && can_have_DW_AT_const_value_p (tag)) | |
18683 | { | |
18684 | struct partial_die_info *spec_die; | |
18685 | ||
18686 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); | |
18687 | spec_die = res.pdi; | |
18688 | cu = res.cu; | |
18689 | ||
18690 | spec_die->fixup (cu); | |
18691 | ||
18692 | if (spec_die->has_const_value) | |
18693 | { | |
18694 | /* Copy DW_AT_const_value attribute if it is set. */ | |
18695 | has_const_value = spec_die->has_const_value; | |
18696 | } | |
18697 | } | |
18698 | ||
72bf9492 | 18699 | /* Set default names for some unnamed DIEs. */ |
72bf9492 | 18700 | |
52356b79 YQ |
18701 | if (name == NULL && tag == DW_TAG_namespace) |
18702 | name = CP_ANONYMOUS_NAMESPACE_STR; | |
72bf9492 | 18703 | |
abc72ce4 DE |
18704 | /* If there is no parent die to provide a namespace, and there are |
18705 | children, see if we can determine the namespace from their linkage | |
122d1940 | 18706 | name. */ |
abc72ce4 | 18707 | if (cu->language == language_cplus |
fd5866f6 | 18708 | && !cu->per_cu->dwarf2_per_objfile->types.empty () |
52356b79 YQ |
18709 | && die_parent == NULL |
18710 | && has_children | |
18711 | && (tag == DW_TAG_class_type | |
18712 | || tag == DW_TAG_structure_type | |
18713 | || tag == DW_TAG_union_type)) | |
18714 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 18715 | |
53832f31 TT |
18716 | /* GCC might emit a nameless struct or union that has a linkage |
18717 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
52356b79 YQ |
18718 | if (name == NULL |
18719 | && (tag == DW_TAG_class_type | |
18720 | || tag == DW_TAG_interface_type | |
18721 | || tag == DW_TAG_structure_type | |
18722 | || tag == DW_TAG_union_type) | |
18723 | && linkage_name != NULL) | |
53832f31 | 18724 | { |
43816ebc TT |
18725 | gdb::unique_xmalloc_ptr<char> demangled |
18726 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
18727 | if (demangled != nullptr) | |
53832f31 | 18728 | { |
96408a79 SA |
18729 | const char *base; |
18730 | ||
18731 | /* Strip any leading namespaces/classes, keep only the base name. | |
18732 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
18733 | base = strrchr (demangled.get (), ':'); |
18734 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
18735 | base++; |
18736 | else | |
43816ebc | 18737 | base = demangled.get (); |
96408a79 | 18738 | |
518817b3 | 18739 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
be1e3d3e | 18740 | name = objfile->intern (base); |
53832f31 TT |
18741 | } |
18742 | } | |
18743 | ||
52356b79 | 18744 | fixup_called = 1; |
72bf9492 DJ |
18745 | } |
18746 | ||
41144253 | 18747 | /* Read the .debug_loclists header contents from the given SECTION in the |
18748 | HEADER. */ | |
18749 | static void | |
18750 | read_loclist_header (struct loclist_header *header, | |
18751 | struct dwarf2_section_info *section) | |
18752 | { | |
18753 | unsigned int bytes_read; | |
18754 | bfd *abfd = section->get_bfd_owner (); | |
18755 | const gdb_byte *info_ptr = section->buffer; | |
18756 | header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
18757 | info_ptr += bytes_read; | |
18758 | header->version = read_2_bytes (abfd, info_ptr); | |
18759 | info_ptr += 2; | |
18760 | header->addr_size = read_1_byte (abfd, info_ptr); | |
18761 | info_ptr += 1; | |
18762 | header->segment_collector_size = read_1_byte (abfd, info_ptr); | |
18763 | info_ptr += 1; | |
18764 | header->offset_entry_count = read_4_bytes (abfd, info_ptr); | |
18765 | } | |
18766 | ||
18767 | /* Return the DW_AT_loclists_base value for the CU. */ | |
18768 | static ULONGEST | |
18769 | lookup_loclist_base (struct dwarf2_cu *cu) | |
18770 | { | |
18771 | /* For the .dwo unit, the loclist_base points to the first offset following | |
18772 | the header. The header consists of the following entities- | |
18773 | 1. Unit Length (4 bytes for 32 bit DWARF format, and 12 bytes for the 64 | |
18774 | bit format) | |
18775 | 2. version (2 bytes) | |
18776 | 3. address size (1 byte) | |
18777 | 4. segment selector size (1 byte) | |
18778 | 5. offset entry count (4 bytes) | |
18779 | These sizes are derived as per the DWARFv5 standard. */ | |
18780 | if (cu->dwo_unit != nullptr) | |
18781 | { | |
18782 | if (cu->header.initial_length_size == 4) | |
18783 | return LOCLIST_HEADER_SIZE32; | |
18784 | return LOCLIST_HEADER_SIZE64; | |
18785 | } | |
18786 | return cu->loclist_base; | |
18787 | } | |
18788 | ||
18789 | /* Given a DW_FORM_loclistx value LOCLIST_INDEX, fetch the offset from the | |
18790 | array of offsets in the .debug_loclists section. */ | |
18791 | static CORE_ADDR | |
18792 | read_loclist_index (struct dwarf2_cu *cu, ULONGEST loclist_index) | |
18793 | { | |
18794 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
18795 | = cu->per_cu->dwarf2_per_objfile; | |
18796 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18797 | bfd *abfd = objfile->obfd; | |
18798 | ULONGEST loclist_base = lookup_loclist_base (cu); | |
18799 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); | |
18800 | ||
18801 | section->read (objfile); | |
18802 | if (section->buffer == NULL) | |
18803 | complaint (_("DW_FORM_loclistx used without .debug_loclists " | |
18804 | "section [in module %s]"), objfile_name (objfile)); | |
18805 | struct loclist_header header; | |
18806 | read_loclist_header (&header, section); | |
18807 | if (loclist_index >= header.offset_entry_count) | |
18808 | complaint (_("DW_FORM_loclistx pointing outside of " | |
18809 | ".debug_loclists offset array [in module %s]"), | |
18810 | objfile_name (objfile)); | |
18811 | if (loclist_base + loclist_index * cu->header.offset_size | |
18812 | >= section->size) | |
18813 | complaint (_("DW_FORM_loclistx pointing outside of " | |
18814 | ".debug_loclists section [in module %s]"), | |
18815 | objfile_name (objfile)); | |
18816 | const gdb_byte *info_ptr | |
18817 | = section->buffer + loclist_base + loclist_index * cu->header.offset_size; | |
18818 | ||
18819 | if (cu->header.offset_size == 4) | |
18820 | return bfd_get_32 (abfd, info_ptr) + loclist_base; | |
18821 | else | |
18822 | return bfd_get_64 (abfd, info_ptr) + loclist_base; | |
18823 | } | |
18824 | ||
18a8505e AT |
18825 | /* Process the attributes that had to be skipped in the first round. These |
18826 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
18827 | They could not have been processed in the first round, because at the time | |
18828 | the values of str_offsets_base or addr_base may not have been known. */ | |
f1749218 TT |
18829 | static void |
18830 | read_attribute_reprocess (const struct die_reader_specs *reader, | |
18831 | struct attribute *attr) | |
18a8505e AT |
18832 | { |
18833 | struct dwarf2_cu *cu = reader->cu; | |
18834 | switch (attr->form) | |
18835 | { | |
18836 | case DW_FORM_addrx: | |
18837 | case DW_FORM_GNU_addr_index: | |
18838 | DW_ADDR (attr) = read_addr_index (cu, DW_UNSND (attr)); | |
18839 | break; | |
41144253 | 18840 | case DW_FORM_loclistx: |
18841 | DW_UNSND (attr) = read_loclist_index (cu, DW_UNSND (attr)); | |
18842 | break; | |
18a8505e AT |
18843 | case DW_FORM_strx: |
18844 | case DW_FORM_strx1: | |
18845 | case DW_FORM_strx2: | |
18846 | case DW_FORM_strx3: | |
18847 | case DW_FORM_strx4: | |
18848 | case DW_FORM_GNU_str_index: | |
18849 | { | |
18850 | unsigned int str_index = DW_UNSND (attr); | |
18851 | if (reader->dwo_file != NULL) | |
18852 | { | |
18853 | DW_STRING (attr) = read_dwo_str_index (reader, str_index); | |
18854 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18855 | } | |
18856 | else | |
18857 | { | |
18858 | DW_STRING (attr) = read_stub_str_index (cu, str_index); | |
18859 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18860 | } | |
18861 | break; | |
18862 | } | |
18863 | default: | |
18864 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
18865 | } | |
18866 | } | |
18867 | ||
a8329558 | 18868 | /* Read an attribute value described by an attribute form. */ |
c906108c | 18869 | |
d521ce57 | 18870 | static const gdb_byte * |
dee91e82 DE |
18871 | read_attribute_value (const struct die_reader_specs *reader, |
18872 | struct attribute *attr, unsigned form, | |
18a8505e AT |
18873 | LONGEST implicit_const, const gdb_byte *info_ptr, |
18874 | bool *need_reprocess) | |
c906108c | 18875 | { |
dee91e82 | 18876 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18877 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18878 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18879 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
dee91e82 | 18880 | bfd *abfd = reader->abfd; |
e7c27a73 | 18881 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
18882 | unsigned int bytes_read; |
18883 | struct dwarf_block *blk; | |
18a8505e | 18884 | *need_reprocess = false; |
c906108c | 18885 | |
aead7601 | 18886 | attr->form = (enum dwarf_form) form; |
a8329558 | 18887 | switch (form) |
c906108c | 18888 | { |
c906108c | 18889 | case DW_FORM_ref_addr: |
ae411497 | 18890 | if (cu->header.version == 2) |
c8a7a66f TT |
18891 | DW_UNSND (attr) = cu->header.read_address (abfd, info_ptr, |
18892 | &bytes_read); | |
ae411497 | 18893 | else |
8266302d TT |
18894 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, |
18895 | &bytes_read); | |
ae411497 TT |
18896 | info_ptr += bytes_read; |
18897 | break; | |
36586728 | 18898 | case DW_FORM_GNU_ref_alt: |
8266302d | 18899 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
36586728 TT |
18900 | info_ptr += bytes_read; |
18901 | break; | |
ae411497 | 18902 | case DW_FORM_addr: |
08feed99 TT |
18903 | { |
18904 | struct gdbarch *gdbarch = objfile->arch (); | |
18905 | DW_ADDR (attr) = cu->header.read_address (abfd, info_ptr, &bytes_read); | |
18906 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); | |
18907 | info_ptr += bytes_read; | |
18908 | } | |
c906108c SS |
18909 | break; |
18910 | case DW_FORM_block2: | |
7b5a2f43 | 18911 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18912 | blk->size = read_2_bytes (abfd, info_ptr); |
18913 | info_ptr += 2; | |
18914 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18915 | info_ptr += blk->size; | |
18916 | DW_BLOCK (attr) = blk; | |
18917 | break; | |
18918 | case DW_FORM_block4: | |
7b5a2f43 | 18919 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18920 | blk->size = read_4_bytes (abfd, info_ptr); |
18921 | info_ptr += 4; | |
18922 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18923 | info_ptr += blk->size; | |
18924 | DW_BLOCK (attr) = blk; | |
18925 | break; | |
18926 | case DW_FORM_data2: | |
18927 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
18928 | info_ptr += 2; | |
18929 | break; | |
18930 | case DW_FORM_data4: | |
18931 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
18932 | info_ptr += 4; | |
18933 | break; | |
18934 | case DW_FORM_data8: | |
18935 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
18936 | info_ptr += 8; | |
18937 | break; | |
0224619f JK |
18938 | case DW_FORM_data16: |
18939 | blk = dwarf_alloc_block (cu); | |
18940 | blk->size = 16; | |
18941 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
18942 | info_ptr += 16; | |
18943 | DW_BLOCK (attr) = blk; | |
18944 | break; | |
2dc7f7b3 | 18945 | case DW_FORM_sec_offset: |
8266302d | 18946 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
2dc7f7b3 TT |
18947 | info_ptr += bytes_read; |
18948 | break; | |
41144253 | 18949 | case DW_FORM_loclistx: |
18950 | { | |
18951 | *need_reprocess = true; | |
18952 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
18953 | info_ptr += bytes_read; | |
18954 | } | |
18955 | break; | |
c906108c | 18956 | case DW_FORM_string: |
9b1c24c8 | 18957 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 18958 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
18959 | info_ptr += bytes_read; |
18960 | break; | |
4bdf3d34 | 18961 | case DW_FORM_strp: |
36586728 TT |
18962 | if (!cu->per_cu->is_dwz) |
18963 | { | |
ed2dc618 SM |
18964 | DW_STRING (attr) = read_indirect_string (dwarf2_per_objfile, |
18965 | abfd, info_ptr, cu_header, | |
36586728 TT |
18966 | &bytes_read); |
18967 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18968 | info_ptr += bytes_read; | |
18969 | break; | |
18970 | } | |
18971 | /* FALLTHROUGH */ | |
43988095 JK |
18972 | case DW_FORM_line_strp: |
18973 | if (!cu->per_cu->is_dwz) | |
18974 | { | |
86c0bb4c TT |
18975 | DW_STRING (attr) |
18976 | = dwarf2_per_objfile->read_line_string (info_ptr, cu_header, | |
18977 | &bytes_read); | |
43988095 JK |
18978 | DW_STRING_IS_CANONICAL (attr) = 0; |
18979 | info_ptr += bytes_read; | |
18980 | break; | |
18981 | } | |
18982 | /* FALLTHROUGH */ | |
36586728 TT |
18983 | case DW_FORM_GNU_strp_alt: |
18984 | { | |
ed2dc618 | 18985 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
8266302d TT |
18986 | LONGEST str_offset = cu_header->read_offset (abfd, info_ptr, |
18987 | &bytes_read); | |
36586728 | 18988 | |
0314b390 | 18989 | DW_STRING (attr) = dwz->read_string (objfile, str_offset); |
36586728 TT |
18990 | DW_STRING_IS_CANONICAL (attr) = 0; |
18991 | info_ptr += bytes_read; | |
18992 | } | |
4bdf3d34 | 18993 | break; |
2dc7f7b3 | 18994 | case DW_FORM_exprloc: |
c906108c | 18995 | case DW_FORM_block: |
7b5a2f43 | 18996 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18997 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18998 | info_ptr += bytes_read; | |
18999 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19000 | info_ptr += blk->size; | |
19001 | DW_BLOCK (attr) = blk; | |
19002 | break; | |
19003 | case DW_FORM_block1: | |
7b5a2f43 | 19004 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19005 | blk->size = read_1_byte (abfd, info_ptr); |
19006 | info_ptr += 1; | |
19007 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19008 | info_ptr += blk->size; | |
19009 | DW_BLOCK (attr) = blk; | |
19010 | break; | |
19011 | case DW_FORM_data1: | |
19012 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19013 | info_ptr += 1; | |
19014 | break; | |
19015 | case DW_FORM_flag: | |
19016 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19017 | info_ptr += 1; | |
19018 | break; | |
2dc7f7b3 TT |
19019 | case DW_FORM_flag_present: |
19020 | DW_UNSND (attr) = 1; | |
19021 | break; | |
c906108c SS |
19022 | case DW_FORM_sdata: |
19023 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19024 | info_ptr += bytes_read; | |
19025 | break; | |
19026 | case DW_FORM_udata: | |
18a8505e | 19027 | case DW_FORM_rnglistx: |
c906108c SS |
19028 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19029 | info_ptr += bytes_read; | |
19030 | break; | |
19031 | case DW_FORM_ref1: | |
9c541725 | 19032 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19033 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
19034 | info_ptr += 1; |
19035 | break; | |
19036 | case DW_FORM_ref2: | |
9c541725 | 19037 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19038 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
19039 | info_ptr += 2; |
19040 | break; | |
19041 | case DW_FORM_ref4: | |
9c541725 | 19042 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19043 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
19044 | info_ptr += 4; |
19045 | break; | |
613e1657 | 19046 | case DW_FORM_ref8: |
9c541725 | 19047 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19048 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
19049 | info_ptr += 8; |
19050 | break; | |
55f1336d | 19051 | case DW_FORM_ref_sig8: |
ac9ec31b | 19052 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
19053 | info_ptr += 8; |
19054 | break; | |
c906108c | 19055 | case DW_FORM_ref_udata: |
9c541725 | 19056 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19057 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
19058 | info_ptr += bytes_read; |
19059 | break; | |
c906108c | 19060 | case DW_FORM_indirect: |
a8329558 KW |
19061 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19062 | info_ptr += bytes_read; | |
43988095 JK |
19063 | if (form == DW_FORM_implicit_const) |
19064 | { | |
19065 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19066 | info_ptr += bytes_read; | |
19067 | } | |
19068 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
18a8505e | 19069 | info_ptr, need_reprocess); |
43988095 JK |
19070 | break; |
19071 | case DW_FORM_implicit_const: | |
19072 | DW_SND (attr) = implicit_const; | |
a8329558 | 19073 | break; |
336d760d | 19074 | case DW_FORM_addrx: |
3019eac3 | 19075 | case DW_FORM_GNU_addr_index: |
18a8505e AT |
19076 | *need_reprocess = true; |
19077 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
3019eac3 DE |
19078 | info_ptr += bytes_read; |
19079 | break; | |
cf532bd1 | 19080 | case DW_FORM_strx: |
15f18d14 AT |
19081 | case DW_FORM_strx1: |
19082 | case DW_FORM_strx2: | |
19083 | case DW_FORM_strx3: | |
19084 | case DW_FORM_strx4: | |
3019eac3 | 19085 | case DW_FORM_GNU_str_index: |
3019eac3 | 19086 | { |
15f18d14 AT |
19087 | ULONGEST str_index; |
19088 | if (form == DW_FORM_strx1) | |
19089 | { | |
19090 | str_index = read_1_byte (abfd, info_ptr); | |
19091 | info_ptr += 1; | |
19092 | } | |
19093 | else if (form == DW_FORM_strx2) | |
19094 | { | |
19095 | str_index = read_2_bytes (abfd, info_ptr); | |
19096 | info_ptr += 2; | |
19097 | } | |
19098 | else if (form == DW_FORM_strx3) | |
19099 | { | |
19100 | str_index = read_3_bytes (abfd, info_ptr); | |
19101 | info_ptr += 3; | |
19102 | } | |
19103 | else if (form == DW_FORM_strx4) | |
19104 | { | |
19105 | str_index = read_4_bytes (abfd, info_ptr); | |
19106 | info_ptr += 4; | |
19107 | } | |
19108 | else | |
19109 | { | |
19110 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19111 | info_ptr += bytes_read; | |
19112 | } | |
18a8505e AT |
19113 | *need_reprocess = true; |
19114 | DW_UNSND (attr) = str_index; | |
19115 | } | |
3019eac3 | 19116 | break; |
c906108c | 19117 | default: |
8a3fe4f8 | 19118 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19119 | dwarf_form_name (form), |
19120 | bfd_get_filename (abfd)); | |
c906108c | 19121 | } |
28e94949 | 19122 | |
36586728 | 19123 | /* Super hack. */ |
cd6c91b4 | 19124 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
19125 | attr->form = DW_FORM_GNU_ref_alt; |
19126 | ||
28e94949 JB |
19127 | /* We have seen instances where the compiler tried to emit a byte |
19128 | size attribute of -1 which ended up being encoded as an unsigned | |
19129 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19130 | an object of this size seems pretty unlikely so we can relatively | |
19131 | safely treat these cases as if the size attribute was invalid and | |
19132 | treat them as zero by default. */ | |
19133 | if (attr->name == DW_AT_byte_size | |
19134 | && form == DW_FORM_data4 | |
19135 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19136 | { |
19137 | complaint | |
b98664d3 | 19138 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
43bbcdc2 | 19139 | hex_string (DW_UNSND (attr))); |
01c66ae6 JB |
19140 | DW_UNSND (attr) = 0; |
19141 | } | |
28e94949 | 19142 | |
c906108c SS |
19143 | return info_ptr; |
19144 | } | |
19145 | ||
a8329558 KW |
19146 | /* Read an attribute described by an abbreviated attribute. */ |
19147 | ||
d521ce57 | 19148 | static const gdb_byte * |
dee91e82 DE |
19149 | read_attribute (const struct die_reader_specs *reader, |
19150 | struct attribute *attr, struct attr_abbrev *abbrev, | |
18a8505e | 19151 | const gdb_byte *info_ptr, bool *need_reprocess) |
a8329558 KW |
19152 | { |
19153 | attr->name = abbrev->name; | |
43988095 | 19154 | return read_attribute_value (reader, attr, abbrev->form, |
18a8505e AT |
19155 | abbrev->implicit_const, info_ptr, |
19156 | need_reprocess); | |
a8329558 KW |
19157 | } |
19158 | ||
43988095 JK |
19159 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ |
19160 | ||
19161 | static const char * | |
ed2dc618 | 19162 | read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4f44ae6c | 19163 | LONGEST str_offset) |
43988095 | 19164 | { |
4f44ae6c TT |
19165 | return dwarf2_per_objfile->str.read_string (dwarf2_per_objfile->objfile, |
19166 | str_offset, "DW_FORM_strp"); | |
c906108c SS |
19167 | } |
19168 | ||
43988095 JK |
19169 | /* Return pointer to string at .debug_str offset as read from BUF. |
19170 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19171 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19172 | ||
d521ce57 | 19173 | static const char * |
ed2dc618 SM |
19174 | read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, |
19175 | const gdb_byte *buf, | |
cf2c3c16 TT |
19176 | const struct comp_unit_head *cu_header, |
19177 | unsigned int *bytes_read_ptr) | |
19178 | { | |
8266302d | 19179 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
cf2c3c16 | 19180 | |
4f44ae6c | 19181 | return read_indirect_string_at_offset (dwarf2_per_objfile, str_offset); |
cf2c3c16 TT |
19182 | } |
19183 | ||
86c0bb4c | 19184 | /* See read.h. */ |
43988095 | 19185 | |
86c0bb4c TT |
19186 | const char * |
19187 | dwarf2_per_objfile::read_line_string (const gdb_byte *buf, | |
43988095 JK |
19188 | const struct comp_unit_head *cu_header, |
19189 | unsigned int *bytes_read_ptr) | |
19190 | { | |
86c0bb4c | 19191 | bfd *abfd = objfile->obfd; |
8266302d | 19192 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
43988095 | 19193 | |
86c0bb4c | 19194 | return line_str.read_string (objfile, str_offset, "DW_FORM_line_strp"); |
43988095 JK |
19195 | } |
19196 | ||
3019eac3 | 19197 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 19198 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
19199 | ADDR_SIZE is the size of addresses from the CU header. */ |
19200 | ||
19201 | static CORE_ADDR | |
ed2dc618 | 19202 | read_addr_index_1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e AT |
19203 | unsigned int addr_index, gdb::optional<ULONGEST> addr_base, |
19204 | int addr_size) | |
3019eac3 DE |
19205 | { |
19206 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19207 | bfd *abfd = objfile->obfd; | |
19208 | const gdb_byte *info_ptr; | |
18a8505e | 19209 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 19210 | |
96b79293 | 19211 | dwarf2_per_objfile->addr.read (objfile); |
3019eac3 DE |
19212 | if (dwarf2_per_objfile->addr.buffer == NULL) |
19213 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 19214 | objfile_name (objfile)); |
18a8505e AT |
19215 | if (addr_base_or_zero + addr_index * addr_size |
19216 | >= dwarf2_per_objfile->addr.size) | |
3019eac3 DE |
19217 | error (_("DW_FORM_addr_index pointing outside of " |
19218 | ".debug_addr section [in module %s]"), | |
4262abfb | 19219 | objfile_name (objfile)); |
3019eac3 | 19220 | info_ptr = (dwarf2_per_objfile->addr.buffer |
18a8505e | 19221 | + addr_base_or_zero + addr_index * addr_size); |
3019eac3 DE |
19222 | if (addr_size == 4) |
19223 | return bfd_get_32 (abfd, info_ptr); | |
19224 | else | |
19225 | return bfd_get_64 (abfd, info_ptr); | |
19226 | } | |
19227 | ||
19228 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
19229 | ||
19230 | static CORE_ADDR | |
19231 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
19232 | { | |
518817b3 SM |
19233 | return read_addr_index_1 (cu->per_cu->dwarf2_per_objfile, addr_index, |
19234 | cu->addr_base, cu->header.addr_size); | |
3019eac3 DE |
19235 | } |
19236 | ||
19237 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
19238 | ||
19239 | static CORE_ADDR | |
d521ce57 | 19240 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
19241 | unsigned int *bytes_read) |
19242 | { | |
518817b3 | 19243 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
3019eac3 DE |
19244 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
19245 | ||
19246 | return read_addr_index (cu, addr_index); | |
19247 | } | |
19248 | ||
450a1bfc | 19249 | /* See read.h. */ |
3019eac3 DE |
19250 | |
19251 | CORE_ADDR | |
450a1bfc | 19252 | dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu, unsigned int addr_index) |
3019eac3 | 19253 | { |
ed2dc618 | 19254 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 19255 | struct dwarf2_cu *cu = per_cu->cu; |
18a8505e | 19256 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
19257 | int addr_size; |
19258 | ||
3019eac3 DE |
19259 | /* We need addr_base and addr_size. |
19260 | If we don't have PER_CU->cu, we have to get it. | |
19261 | Nasty, but the alternative is storing the needed info in PER_CU, | |
19262 | which at this point doesn't seem justified: it's not clear how frequently | |
19263 | it would get used and it would increase the size of every PER_CU. | |
19264 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
19265 | so we're not in uncharted territory here. | |
19266 | Alas we need to be a bit more complicated as addr_base is contained | |
19267 | in the DIE. | |
19268 | ||
19269 | We don't need to read the entire CU(/TU). | |
19270 | We just need the header and top level die. | |
a1b64ce1 | 19271 | |
3019eac3 | 19272 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 19273 | For now we skip this optimization. */ |
3019eac3 DE |
19274 | |
19275 | if (cu != NULL) | |
19276 | { | |
19277 | addr_base = cu->addr_base; | |
19278 | addr_size = cu->header.addr_size; | |
19279 | } | |
19280 | else | |
19281 | { | |
6751ebae | 19282 | cutu_reader reader (per_cu, NULL, 0, false); |
c0ab21c2 TT |
19283 | addr_base = reader.cu->addr_base; |
19284 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
19285 | } |
19286 | ||
ed2dc618 SM |
19287 | return read_addr_index_1 (dwarf2_per_objfile, addr_index, addr_base, |
19288 | addr_size); | |
3019eac3 DE |
19289 | } |
19290 | ||
18a8505e AT |
19291 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
19292 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
19293 | DWO file. */ | |
3019eac3 | 19294 | |
d521ce57 | 19295 | static const char * |
18a8505e AT |
19296 | read_str_index (struct dwarf2_cu *cu, |
19297 | struct dwarf2_section_info *str_section, | |
19298 | struct dwarf2_section_info *str_offsets_section, | |
19299 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 19300 | { |
518817b3 SM |
19301 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19302 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 19303 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
c5164cbc | 19304 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 19305 | bfd *abfd = objfile->obfd; |
d521ce57 | 19306 | const gdb_byte *info_ptr; |
3019eac3 | 19307 | ULONGEST str_offset; |
cf532bd1 | 19308 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 19309 | |
96b79293 TT |
19310 | str_section->read (objfile); |
19311 | str_offsets_section->read (objfile); | |
73869dc2 | 19312 | if (str_section->buffer == NULL) |
18a8505e | 19313 | error (_("%s used without %s section" |
9d8780f0 | 19314 | " in CU at offset %s [in module %s]"), |
96b79293 | 19315 | form_name, str_section->get_name (), |
18a8505e | 19316 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 19317 | if (str_offsets_section->buffer == NULL) |
18a8505e | 19318 | error (_("%s used without %s section" |
9d8780f0 | 19319 | " in CU at offset %s [in module %s]"), |
96b79293 | 19320 | form_name, str_section->get_name (), |
18a8505e | 19321 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 19322 | info_ptr = (str_offsets_section->buffer |
18a8505e | 19323 | + str_offsets_base |
3019eac3 DE |
19324 | + str_index * cu->header.offset_size); |
19325 | if (cu->header.offset_size == 4) | |
19326 | str_offset = bfd_get_32 (abfd, info_ptr); | |
19327 | else | |
19328 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 19329 | if (str_offset >= str_section->size) |
57d63ce2 | 19330 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
19331 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
19332 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19333 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
19334 | } |
19335 | ||
18a8505e AT |
19336 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
19337 | ||
19338 | static const char * | |
19339 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
19340 | { | |
19341 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
19342 | ? reader->cu->header.addr_size : 0; | |
19343 | return read_str_index (reader->cu, | |
19344 | &reader->dwo_file->sections.str, | |
19345 | &reader->dwo_file->sections.str_offsets, | |
19346 | str_offsets_base, str_index); | |
19347 | } | |
19348 | ||
19349 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
19350 | ||
19351 | static const char * | |
19352 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
19353 | { | |
19354 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; | |
19355 | const char *objf_name = objfile_name (objfile); | |
19356 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
19357 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
19358 | ||
19359 | if (!cu->str_offsets_base.has_value ()) | |
19360 | error (_("%s used in Fission stub without %s" | |
19361 | " in CU at offset 0x%lx [in module %s]"), | |
19362 | form_name, str_offsets_attr_name, | |
19363 | (long) cu->header.offset_size, objf_name); | |
19364 | ||
19365 | return read_str_index (cu, | |
19366 | &cu->per_cu->dwarf2_per_objfile->str, | |
19367 | &cu->per_cu->dwarf2_per_objfile->str_offsets, | |
19368 | *cu->str_offsets_base, str_index); | |
19369 | } | |
19370 | ||
3019eac3 DE |
19371 | /* Return the length of an LEB128 number in BUF. */ |
19372 | ||
19373 | static int | |
19374 | leb128_size (const gdb_byte *buf) | |
19375 | { | |
19376 | const gdb_byte *begin = buf; | |
19377 | gdb_byte byte; | |
19378 | ||
19379 | while (1) | |
19380 | { | |
19381 | byte = *buf++; | |
19382 | if ((byte & 128) == 0) | |
19383 | return buf - begin; | |
19384 | } | |
19385 | } | |
19386 | ||
c906108c | 19387 | static void |
e142c38c | 19388 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
19389 | { |
19390 | switch (lang) | |
19391 | { | |
19392 | case DW_LANG_C89: | |
76bee0cc | 19393 | case DW_LANG_C99: |
0cfd832f | 19394 | case DW_LANG_C11: |
c906108c | 19395 | case DW_LANG_C: |
d1be3247 | 19396 | case DW_LANG_UPC: |
e142c38c | 19397 | cu->language = language_c; |
c906108c | 19398 | break; |
9c37b5ae | 19399 | case DW_LANG_Java: |
c906108c | 19400 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
19401 | case DW_LANG_C_plus_plus_11: |
19402 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 19403 | cu->language = language_cplus; |
c906108c | 19404 | break; |
6aecb9c2 JB |
19405 | case DW_LANG_D: |
19406 | cu->language = language_d; | |
19407 | break; | |
c906108c SS |
19408 | case DW_LANG_Fortran77: |
19409 | case DW_LANG_Fortran90: | |
b21b22e0 | 19410 | case DW_LANG_Fortran95: |
f7de9aab MW |
19411 | case DW_LANG_Fortran03: |
19412 | case DW_LANG_Fortran08: | |
e142c38c | 19413 | cu->language = language_fortran; |
c906108c | 19414 | break; |
a766d390 DE |
19415 | case DW_LANG_Go: |
19416 | cu->language = language_go; | |
19417 | break; | |
c906108c | 19418 | case DW_LANG_Mips_Assembler: |
e142c38c | 19419 | cu->language = language_asm; |
c906108c SS |
19420 | break; |
19421 | case DW_LANG_Ada83: | |
8aaf0b47 | 19422 | case DW_LANG_Ada95: |
bc5f45f8 JB |
19423 | cu->language = language_ada; |
19424 | break; | |
72019c9c GM |
19425 | case DW_LANG_Modula2: |
19426 | cu->language = language_m2; | |
19427 | break; | |
fe8e67fd PM |
19428 | case DW_LANG_Pascal83: |
19429 | cu->language = language_pascal; | |
19430 | break; | |
22566fbd DJ |
19431 | case DW_LANG_ObjC: |
19432 | cu->language = language_objc; | |
19433 | break; | |
c44af4eb TT |
19434 | case DW_LANG_Rust: |
19435 | case DW_LANG_Rust_old: | |
19436 | cu->language = language_rust; | |
19437 | break; | |
c906108c SS |
19438 | case DW_LANG_Cobol74: |
19439 | case DW_LANG_Cobol85: | |
c906108c | 19440 | default: |
e142c38c | 19441 | cu->language = language_minimal; |
c906108c SS |
19442 | break; |
19443 | } | |
e142c38c | 19444 | cu->language_defn = language_def (cu->language); |
c906108c SS |
19445 | } |
19446 | ||
19447 | /* Return the named attribute or NULL if not there. */ | |
19448 | ||
19449 | static struct attribute * | |
e142c38c | 19450 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 19451 | { |
a48e046c | 19452 | for (;;) |
c906108c | 19453 | { |
a48e046c TT |
19454 | unsigned int i; |
19455 | struct attribute *spec = NULL; | |
19456 | ||
19457 | for (i = 0; i < die->num_attrs; ++i) | |
19458 | { | |
19459 | if (die->attrs[i].name == name) | |
19460 | return &die->attrs[i]; | |
19461 | if (die->attrs[i].name == DW_AT_specification | |
19462 | || die->attrs[i].name == DW_AT_abstract_origin) | |
19463 | spec = &die->attrs[i]; | |
19464 | } | |
19465 | ||
19466 | if (!spec) | |
19467 | break; | |
c906108c | 19468 | |
f2f0e013 | 19469 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 19470 | } |
c5aa993b | 19471 | |
c906108c SS |
19472 | return NULL; |
19473 | } | |
19474 | ||
7d45c7c3 KB |
19475 | /* Return the string associated with a string-typed attribute, or NULL if it |
19476 | is either not found or is of an incorrect type. */ | |
19477 | ||
19478 | static const char * | |
19479 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
19480 | { | |
19481 | struct attribute *attr; | |
19482 | const char *str = NULL; | |
19483 | ||
19484 | attr = dwarf2_attr (die, name, cu); | |
19485 | ||
19486 | if (attr != NULL) | |
19487 | { | |
43988095 | 19488 | if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp |
b3340438 | 19489 | || attr->form == DW_FORM_string |
cf532bd1 | 19490 | || attr->form == DW_FORM_strx |
8fe0f950 AT |
19491 | || attr->form == DW_FORM_strx1 |
19492 | || attr->form == DW_FORM_strx2 | |
19493 | || attr->form == DW_FORM_strx3 | |
19494 | || attr->form == DW_FORM_strx4 | |
b3340438 | 19495 | || attr->form == DW_FORM_GNU_str_index |
16eb6b2d | 19496 | || attr->form == DW_FORM_GNU_strp_alt) |
7d45c7c3 KB |
19497 | str = DW_STRING (attr); |
19498 | else | |
b98664d3 | 19499 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
19500 | "DIE at %s in module %s"), |
19501 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
518817b3 | 19502 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
7d45c7c3 KB |
19503 | } |
19504 | ||
19505 | return str; | |
19506 | } | |
19507 | ||
a084a2a6 | 19508 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 19509 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
19510 | static const char * |
19511 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
19512 | { | |
19513 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
19514 | if (dwo_name == nullptr) | |
19515 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
19516 | return dwo_name; | |
19517 | } | |
19518 | ||
05cf31d1 JB |
19519 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
19520 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 19521 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
19522 | |
19523 | static int | |
19524 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
19525 | { | |
19526 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
19527 | ||
19528 | return (attr && DW_UNSND (attr)); | |
19529 | } | |
19530 | ||
3ca72b44 | 19531 | static int |
e142c38c | 19532 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 19533 | { |
05cf31d1 JB |
19534 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
19535 | which value is non-zero. However, we have to be careful with | |
19536 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
19537 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
19538 | end up accidently finding a declaration attribute that belongs | |
19539 | to a different DIE referenced by the specification attribute, | |
19540 | even though the given DIE does not have a declaration attribute. */ | |
19541 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
19542 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
19543 | } |
19544 | ||
63d06c5c | 19545 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 19546 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
19547 | containing the return value on output. If there is no |
19548 | specification, but there is an abstract origin, that is | |
19549 | returned. */ | |
63d06c5c DC |
19550 | |
19551 | static struct die_info * | |
f2f0e013 | 19552 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 19553 | { |
f2f0e013 DJ |
19554 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
19555 | *spec_cu); | |
63d06c5c | 19556 | |
edb3359d DJ |
19557 | if (spec_attr == NULL) |
19558 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
19559 | ||
63d06c5c DC |
19560 | if (spec_attr == NULL) |
19561 | return NULL; | |
19562 | else | |
f2f0e013 | 19563 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 19564 | } |
c906108c | 19565 | |
527f3840 JK |
19566 | /* Stub for free_line_header to match void * callback types. */ |
19567 | ||
19568 | static void | |
19569 | free_line_header_voidp (void *arg) | |
19570 | { | |
9a3c8263 | 19571 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 19572 | |
fff8551c | 19573 | delete lh; |
527f3840 JK |
19574 | } |
19575 | ||
83769d0b | 19576 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
19577 | |
19578 | static struct dwarf2_section_info * | |
19579 | get_debug_line_section (struct dwarf2_cu *cu) | |
19580 | { | |
19581 | struct dwarf2_section_info *section; | |
518817b3 SM |
19582 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19583 | = cu->per_cu->dwarf2_per_objfile; | |
36586728 TT |
19584 | |
19585 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
19586 | DWO file. */ | |
19587 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
19588 | section = &cu->dwo_unit->dwo_file->sections.line; | |
19589 | else if (cu->per_cu->is_dwz) | |
19590 | { | |
ed2dc618 | 19591 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
19592 | |
19593 | section = &dwz->line; | |
19594 | } | |
19595 | else | |
19596 | section = &dwarf2_per_objfile->line; | |
19597 | ||
19598 | return section; | |
19599 | } | |
19600 | ||
debd256d | 19601 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 19602 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 19603 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
19604 | Returns NULL if there is a problem reading the header, e.g., if it |
19605 | has a version we don't understand. | |
debd256d JB |
19606 | |
19607 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
19608 | the returned object point into the dwarf line section buffer, |
19609 | and must not be freed. */ | |
ae2de4f8 | 19610 | |
fff8551c | 19611 | static line_header_up |
9c541725 | 19612 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 19613 | { |
3019eac3 | 19614 | struct dwarf2_section_info *section; |
518817b3 SM |
19615 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19616 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 19617 | |
36586728 | 19618 | section = get_debug_line_section (cu); |
96b79293 | 19619 | section->read (dwarf2_per_objfile->objfile); |
3019eac3 | 19620 | if (section->buffer == NULL) |
debd256d | 19621 | { |
3019eac3 | 19622 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 19623 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 19624 | else |
b98664d3 | 19625 | complaint (_("missing .debug_line section")); |
debd256d JB |
19626 | return 0; |
19627 | } | |
19628 | ||
0df7ad3a TT |
19629 | return dwarf_decode_line_header (sect_off, cu->per_cu->is_dwz, |
19630 | dwarf2_per_objfile, section, | |
19631 | &cu->header); | |
debd256d | 19632 | } |
c906108c | 19633 | |
c6da4cef | 19634 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 19635 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 19636 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
19637 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
19638 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 19639 | |
d521ce57 | 19640 | static const char * |
7ba99d21 | 19641 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 19642 | const dwarf2_psymtab *pst, |
c89b44cd TT |
19643 | const char *comp_dir, |
19644 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 19645 | { |
d521ce57 TT |
19646 | const char *include_name = fe.name; |
19647 | const char *include_name_to_compare = include_name; | |
72b9f47f | 19648 | const char *pst_filename; |
c6da4cef DE |
19649 | int file_is_pst; |
19650 | ||
8c43009f | 19651 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 19652 | |
c89b44cd | 19653 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
19654 | if (!IS_ABSOLUTE_PATH (include_name) |
19655 | && (dir_name != NULL || comp_dir != NULL)) | |
19656 | { | |
19657 | /* Avoid creating a duplicate psymtab for PST. | |
19658 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
19659 | Before we do the comparison, however, we need to account | |
19660 | for DIR_NAME and COMP_DIR. | |
19661 | First prepend dir_name (if non-NULL). If we still don't | |
19662 | have an absolute path prepend comp_dir (if non-NULL). | |
19663 | However, the directory we record in the include-file's | |
19664 | psymtab does not contain COMP_DIR (to match the | |
19665 | corresponding symtab(s)). | |
19666 | ||
19667 | Example: | |
19668 | ||
19669 | bash$ cd /tmp | |
19670 | bash$ gcc -g ./hello.c | |
19671 | include_name = "hello.c" | |
19672 | dir_name = "." | |
19673 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
19674 | DW_AT_name = "./hello.c" |
19675 | ||
19676 | */ | |
c6da4cef DE |
19677 | |
19678 | if (dir_name != NULL) | |
19679 | { | |
c89b44cd TT |
19680 | name_holder->reset (concat (dir_name, SLASH_STRING, |
19681 | include_name, (char *) NULL)); | |
19682 | include_name = name_holder->get (); | |
c6da4cef | 19683 | include_name_to_compare = include_name; |
c6da4cef DE |
19684 | } |
19685 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
19686 | { | |
c89b44cd TT |
19687 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
19688 | include_name, (char *) NULL)); | |
19689 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
19690 | } |
19691 | } | |
19692 | ||
19693 | pst_filename = pst->filename; | |
c89b44cd | 19694 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
19695 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
19696 | { | |
c89b44cd TT |
19697 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
19698 | pst_filename, (char *) NULL)); | |
19699 | pst_filename = copied_name.get (); | |
c6da4cef DE |
19700 | } |
19701 | ||
1e3fad37 | 19702 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 19703 | |
c6da4cef DE |
19704 | if (file_is_pst) |
19705 | return NULL; | |
19706 | return include_name; | |
19707 | } | |
19708 | ||
d9b3de22 DE |
19709 | /* State machine to track the state of the line number program. */ |
19710 | ||
6f77053d | 19711 | class lnp_state_machine |
d9b3de22 | 19712 | { |
6f77053d PA |
19713 | public: |
19714 | /* Initialize a machine state for the start of a line number | |
19715 | program. */ | |
804d2729 TT |
19716 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
19717 | bool record_lines_p); | |
6f77053d | 19718 | |
8c43009f PA |
19719 | file_entry *current_file () |
19720 | { | |
19721 | /* lh->file_names is 0-based, but the file name numbers in the | |
19722 | statement program are 1-based. */ | |
6f77053d PA |
19723 | return m_line_header->file_name_at (m_file); |
19724 | } | |
19725 | ||
19726 | /* Record the line in the state machine. END_SEQUENCE is true if | |
19727 | we're processing the end of a sequence. */ | |
19728 | void record_line (bool end_sequence); | |
19729 | ||
7ab6656f OJ |
19730 | /* Check ADDRESS is zero and less than UNRELOCATED_LOWPC and if true |
19731 | nop-out rest of the lines in this sequence. */ | |
6f77053d PA |
19732 | void check_line_address (struct dwarf2_cu *cu, |
19733 | const gdb_byte *line_ptr, | |
7ab6656f | 19734 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
19735 | |
19736 | void handle_set_discriminator (unsigned int discriminator) | |
19737 | { | |
19738 | m_discriminator = discriminator; | |
19739 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
19740 | } | |
19741 | ||
19742 | /* Handle DW_LNE_set_address. */ | |
19743 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
19744 | { | |
19745 | m_op_index = 0; | |
19746 | address += baseaddr; | |
19747 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
19748 | } | |
19749 | ||
19750 | /* Handle DW_LNS_advance_pc. */ | |
19751 | void handle_advance_pc (CORE_ADDR adjust); | |
19752 | ||
19753 | /* Handle a special opcode. */ | |
19754 | void handle_special_opcode (unsigned char op_code); | |
19755 | ||
19756 | /* Handle DW_LNS_advance_line. */ | |
19757 | void handle_advance_line (int line_delta) | |
19758 | { | |
19759 | advance_line (line_delta); | |
19760 | } | |
19761 | ||
19762 | /* Handle DW_LNS_set_file. */ | |
19763 | void handle_set_file (file_name_index file); | |
19764 | ||
19765 | /* Handle DW_LNS_negate_stmt. */ | |
19766 | void handle_negate_stmt () | |
19767 | { | |
19768 | m_is_stmt = !m_is_stmt; | |
19769 | } | |
19770 | ||
19771 | /* Handle DW_LNS_const_add_pc. */ | |
19772 | void handle_const_add_pc (); | |
19773 | ||
19774 | /* Handle DW_LNS_fixed_advance_pc. */ | |
19775 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
19776 | { | |
19777 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
19778 | m_op_index = 0; | |
19779 | } | |
19780 | ||
19781 | /* Handle DW_LNS_copy. */ | |
19782 | void handle_copy () | |
19783 | { | |
19784 | record_line (false); | |
19785 | m_discriminator = 0; | |
19786 | } | |
19787 | ||
19788 | /* Handle DW_LNE_end_sequence. */ | |
19789 | void handle_end_sequence () | |
19790 | { | |
804d2729 | 19791 | m_currently_recording_lines = true; |
6f77053d PA |
19792 | } |
19793 | ||
19794 | private: | |
19795 | /* Advance the line by LINE_DELTA. */ | |
19796 | void advance_line (int line_delta) | |
19797 | { | |
19798 | m_line += line_delta; | |
19799 | ||
19800 | if (line_delta != 0) | |
19801 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
19802 | } |
19803 | ||
804d2729 TT |
19804 | struct dwarf2_cu *m_cu; |
19805 | ||
6f77053d PA |
19806 | gdbarch *m_gdbarch; |
19807 | ||
19808 | /* True if we're recording lines. | |
19809 | Otherwise we're building partial symtabs and are just interested in | |
19810 | finding include files mentioned by the line number program. */ | |
19811 | bool m_record_lines_p; | |
19812 | ||
8c43009f | 19813 | /* The line number header. */ |
6f77053d | 19814 | line_header *m_line_header; |
8c43009f | 19815 | |
6f77053d PA |
19816 | /* These are part of the standard DWARF line number state machine, |
19817 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 19818 | |
6f77053d | 19819 | unsigned char m_op_index = 0; |
7ba99d21 AT |
19820 | /* The line table index of the current file. */ |
19821 | file_name_index m_file = 1; | |
6f77053d PA |
19822 | unsigned int m_line = 1; |
19823 | ||
19824 | /* These are initialized in the constructor. */ | |
19825 | ||
19826 | CORE_ADDR m_address; | |
19827 | bool m_is_stmt; | |
19828 | unsigned int m_discriminator; | |
d9b3de22 DE |
19829 | |
19830 | /* Additional bits of state we need to track. */ | |
19831 | ||
19832 | /* The last file that we called dwarf2_start_subfile for. | |
19833 | This is only used for TLLs. */ | |
6f77053d | 19834 | unsigned int m_last_file = 0; |
d9b3de22 | 19835 | /* The last file a line number was recorded for. */ |
6f77053d | 19836 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 19837 | |
804d2729 TT |
19838 | /* When true, record the lines we decode. */ |
19839 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
19840 | |
19841 | /* The last line number that was recorded, used to coalesce | |
19842 | consecutive entries for the same line. This can happen, for | |
19843 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
19844 | unsigned int m_last_line = 0; |
19845 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 19846 | }; |
d9b3de22 | 19847 | |
6f77053d PA |
19848 | void |
19849 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
19850 | { | |
19851 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
19852 | / m_line_header->maximum_ops_per_instruction) | |
19853 | * m_line_header->minimum_instruction_length); | |
19854 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
19855 | m_op_index = ((m_op_index + adjust) | |
19856 | % m_line_header->maximum_ops_per_instruction); | |
19857 | } | |
d9b3de22 | 19858 | |
6f77053d PA |
19859 | void |
19860 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 19861 | { |
6f77053d | 19862 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
258bf0ee RB |
19863 | unsigned char adj_opcode_d = adj_opcode / m_line_header->line_range; |
19864 | unsigned char adj_opcode_r = adj_opcode % m_line_header->line_range; | |
19865 | CORE_ADDR addr_adj = (((m_op_index + adj_opcode_d) | |
6f77053d PA |
19866 | / m_line_header->maximum_ops_per_instruction) |
19867 | * m_line_header->minimum_instruction_length); | |
19868 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
258bf0ee | 19869 | m_op_index = ((m_op_index + adj_opcode_d) |
6f77053d | 19870 | % m_line_header->maximum_ops_per_instruction); |
d9b3de22 | 19871 | |
258bf0ee | 19872 | int line_delta = m_line_header->line_base + adj_opcode_r; |
6f77053d PA |
19873 | advance_line (line_delta); |
19874 | record_line (false); | |
19875 | m_discriminator = 0; | |
19876 | } | |
d9b3de22 | 19877 | |
6f77053d PA |
19878 | void |
19879 | lnp_state_machine::handle_set_file (file_name_index file) | |
19880 | { | |
19881 | m_file = file; | |
19882 | ||
19883 | const file_entry *fe = current_file (); | |
19884 | if (fe == NULL) | |
19885 | dwarf2_debug_line_missing_file_complaint (); | |
19886 | else if (m_record_lines_p) | |
19887 | { | |
19888 | const char *dir = fe->include_dir (m_line_header); | |
19889 | ||
c24bdb02 | 19890 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 19891 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 19892 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
19893 | } |
19894 | } | |
19895 | ||
19896 | void | |
19897 | lnp_state_machine::handle_const_add_pc () | |
19898 | { | |
19899 | CORE_ADDR adjust | |
19900 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
19901 | ||
19902 | CORE_ADDR addr_adj | |
19903 | = (((m_op_index + adjust) | |
19904 | / m_line_header->maximum_ops_per_instruction) | |
19905 | * m_line_header->minimum_instruction_length); | |
19906 | ||
19907 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
19908 | m_op_index = ((m_op_index + adjust) | |
19909 | % m_line_header->maximum_ops_per_instruction); | |
19910 | } | |
d9b3de22 | 19911 | |
a05a36a5 DE |
19912 | /* Return non-zero if we should add LINE to the line number table. |
19913 | LINE is the line to add, LAST_LINE is the last line that was added, | |
19914 | LAST_SUBFILE is the subfile for LAST_LINE. | |
19915 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
19916 | had a non-zero discriminator. | |
19917 | ||
19918 | We have to be careful in the presence of discriminators. | |
19919 | E.g., for this line: | |
19920 | ||
19921 | for (i = 0; i < 100000; i++); | |
19922 | ||
19923 | clang can emit four line number entries for that one line, | |
19924 | each with a different discriminator. | |
19925 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
19926 | ||
19927 | However, we want gdb to coalesce all four entries into one. | |
19928 | Otherwise the user could stepi into the middle of the line and | |
19929 | gdb would get confused about whether the pc really was in the | |
19930 | middle of the line. | |
19931 | ||
19932 | Things are further complicated by the fact that two consecutive | |
19933 | line number entries for the same line is a heuristic used by gcc | |
19934 | to denote the end of the prologue. So we can't just discard duplicate | |
19935 | entries, we have to be selective about it. The heuristic we use is | |
19936 | that we only collapse consecutive entries for the same line if at least | |
19937 | one of those entries has a non-zero discriminator. PR 17276. | |
19938 | ||
19939 | Note: Addresses in the line number state machine can never go backwards | |
19940 | within one sequence, thus this coalescing is ok. */ | |
19941 | ||
19942 | static int | |
804d2729 TT |
19943 | dwarf_record_line_p (struct dwarf2_cu *cu, |
19944 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
19945 | int line_has_non_zero_discriminator, |
19946 | struct subfile *last_subfile) | |
19947 | { | |
c24bdb02 | 19948 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
19949 | return 1; |
19950 | if (line != last_line) | |
19951 | return 1; | |
19952 | /* Same line for the same file that we've seen already. | |
19953 | As a last check, for pr 17276, only record the line if the line | |
19954 | has never had a non-zero discriminator. */ | |
19955 | if (!line_has_non_zero_discriminator) | |
19956 | return 1; | |
19957 | return 0; | |
19958 | } | |
19959 | ||
804d2729 TT |
19960 | /* Use the CU's builder to record line number LINE beginning at |
19961 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
19962 | |
19963 | static void | |
d9b3de22 | 19964 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
8c95582d | 19965 | unsigned int line, CORE_ADDR address, bool is_stmt, |
804d2729 | 19966 | struct dwarf2_cu *cu) |
252a6764 DE |
19967 | { |
19968 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
19969 | ||
27e0867f DE |
19970 | if (dwarf_line_debug) |
19971 | { | |
19972 | fprintf_unfiltered (gdb_stdlog, | |
19973 | "Recording line %u, file %s, address %s\n", | |
19974 | line, lbasename (subfile->name), | |
19975 | paddress (gdbarch, address)); | |
19976 | } | |
19977 | ||
804d2729 | 19978 | if (cu != nullptr) |
8c95582d | 19979 | cu->get_builder ()->record_line (subfile, line, addr, is_stmt); |
252a6764 DE |
19980 | } |
19981 | ||
19982 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
19983 | Mark the end of a set of line number records. | |
d9b3de22 | 19984 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
19985 | If SUBFILE is NULL the request is ignored. */ |
19986 | ||
19987 | static void | |
19988 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 19989 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 19990 | { |
27e0867f DE |
19991 | if (subfile == NULL) |
19992 | return; | |
19993 | ||
19994 | if (dwarf_line_debug) | |
19995 | { | |
19996 | fprintf_unfiltered (gdb_stdlog, | |
19997 | "Finishing current line, file %s, address %s\n", | |
19998 | lbasename (subfile->name), | |
19999 | paddress (gdbarch, address)); | |
20000 | } | |
20001 | ||
8c95582d | 20002 | dwarf_record_line_1 (gdbarch, subfile, 0, address, true, cu); |
d9b3de22 DE |
20003 | } |
20004 | ||
6f77053d PA |
20005 | void |
20006 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 20007 | { |
d9b3de22 DE |
20008 | if (dwarf_line_debug) |
20009 | { | |
20010 | fprintf_unfiltered (gdb_stdlog, | |
20011 | "Processing actual line %u: file %u," | |
94a72be7 | 20012 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 20013 | m_line, m_file, |
6f77053d | 20014 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
20015 | m_is_stmt, m_discriminator, |
20016 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
20017 | } |
20018 | ||
6f77053d | 20019 | file_entry *fe = current_file (); |
8c43009f PA |
20020 | |
20021 | if (fe == NULL) | |
d9b3de22 DE |
20022 | dwarf2_debug_line_missing_file_complaint (); |
20023 | /* For now we ignore lines not starting on an instruction boundary. | |
20024 | But not when processing end_sequence for compatibility with the | |
20025 | previous version of the code. */ | |
6f77053d | 20026 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 20027 | { |
8c43009f | 20028 | fe->included_p = 1; |
8c95582d | 20029 | if (m_record_lines_p) |
d9b3de22 | 20030 | { |
c24bdb02 | 20031 | if (m_last_subfile != m_cu->get_builder ()->get_current_subfile () |
804d2729 | 20032 | || end_sequence) |
d9b3de22 | 20033 | { |
804d2729 TT |
20034 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
20035 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
20036 | } |
20037 | ||
20038 | if (!end_sequence) | |
20039 | { | |
8c95582d AB |
20040 | bool is_stmt = producer_is_codewarrior (m_cu) || m_is_stmt; |
20041 | ||
804d2729 | 20042 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
20043 | m_line_has_non_zero_discriminator, |
20044 | m_last_subfile)) | |
d9b3de22 | 20045 | { |
c24bdb02 | 20046 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 20047 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 20048 | builder->get_current_subfile (), |
8c95582d | 20049 | m_line, m_address, is_stmt, |
804d2729 | 20050 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 20051 | } |
c24bdb02 | 20052 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 20053 | m_last_line = m_line; |
d9b3de22 DE |
20054 | } |
20055 | } | |
20056 | } | |
20057 | } | |
20058 | ||
804d2729 TT |
20059 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
20060 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 20061 | { |
804d2729 | 20062 | m_cu = cu; |
6f77053d PA |
20063 | m_gdbarch = arch; |
20064 | m_record_lines_p = record_lines_p; | |
20065 | m_line_header = lh; | |
d9b3de22 | 20066 | |
804d2729 | 20067 | m_currently_recording_lines = true; |
d9b3de22 | 20068 | |
d9b3de22 DE |
20069 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
20070 | was a line entry for it so that the backend has a chance to adjust it | |
20071 | and also record it in case it needs it. This is currently used by MIPS | |
20072 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
20073 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
20074 | m_is_stmt = lh->default_is_stmt; | |
20075 | m_discriminator = 0; | |
252a6764 DE |
20076 | } |
20077 | ||
6f77053d PA |
20078 | void |
20079 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
20080 | const gdb_byte *line_ptr, | |
7ab6656f | 20081 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 20082 | { |
7ab6656f OJ |
20083 | /* If ADDRESS < UNRELOCATED_LOWPC then it's not a usable value, it's outside |
20084 | the pc range of the CU. However, we restrict the test to only ADDRESS | |
20085 | values of zero to preserve GDB's previous behaviour which is to handle | |
20086 | the specific case of a function being GC'd by the linker. */ | |
924c2928 | 20087 | |
7ab6656f | 20088 | if (address == 0 && address < unrelocated_lowpc) |
924c2928 DE |
20089 | { |
20090 | /* This line table is for a function which has been | |
20091 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
20092 | ||
518817b3 | 20093 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
924c2928 DE |
20094 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
20095 | ||
b98664d3 | 20096 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 20097 | line_offset, objfile_name (objfile)); |
804d2729 TT |
20098 | m_currently_recording_lines = false; |
20099 | /* Note: m_currently_recording_lines is left as false until we see | |
20100 | DW_LNE_end_sequence. */ | |
924c2928 DE |
20101 | } |
20102 | } | |
20103 | ||
f3f5162e | 20104 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
20105 | Process the line number information in LH. |
20106 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
20107 | program in order to set included_p for every referenced header. */ | |
debd256d | 20108 | |
c906108c | 20109 | static void |
43f3e411 DE |
20110 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
20111 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 20112 | { |
d521ce57 TT |
20113 | const gdb_byte *line_ptr, *extended_end; |
20114 | const gdb_byte *line_end; | |
a8c50c1f | 20115 | unsigned int bytes_read, extended_len; |
699ca60a | 20116 | unsigned char op_code, extended_op; |
e142c38c | 20117 | CORE_ADDR baseaddr; |
518817b3 | 20118 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 20119 | bfd *abfd = objfile->obfd; |
08feed99 | 20120 | struct gdbarch *gdbarch = objfile->arch (); |
6f77053d PA |
20121 | /* True if we're recording line info (as opposed to building partial |
20122 | symtabs and just interested in finding include files mentioned by | |
20123 | the line number program). */ | |
20124 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 20125 | |
b3b3bada | 20126 | baseaddr = objfile->text_section_offset (); |
c906108c | 20127 | |
debd256d JB |
20128 | line_ptr = lh->statement_program_start; |
20129 | line_end = lh->statement_program_end; | |
c906108c SS |
20130 | |
20131 | /* Read the statement sequences until there's nothing left. */ | |
20132 | while (line_ptr < line_end) | |
20133 | { | |
6f77053d PA |
20134 | /* The DWARF line number program state machine. Reset the state |
20135 | machine at the start of each sequence. */ | |
804d2729 | 20136 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 20137 | bool end_sequence = false; |
d9b3de22 | 20138 | |
8c43009f | 20139 | if (record_lines_p) |
c906108c | 20140 | { |
8c43009f PA |
20141 | /* Start a subfile for the current file of the state |
20142 | machine. */ | |
20143 | const file_entry *fe = state_machine.current_file (); | |
20144 | ||
20145 | if (fe != NULL) | |
804d2729 | 20146 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
20147 | } |
20148 | ||
a738430d | 20149 | /* Decode the table. */ |
d9b3de22 | 20150 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
20151 | { |
20152 | op_code = read_1_byte (abfd, line_ptr); | |
20153 | line_ptr += 1; | |
9aa1fe7e | 20154 | |
debd256d | 20155 | if (op_code >= lh->opcode_base) |
6e70227d | 20156 | { |
8e07a239 | 20157 | /* Special opcode. */ |
6f77053d | 20158 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
20159 | } |
20160 | else switch (op_code) | |
c906108c SS |
20161 | { |
20162 | case DW_LNS_extended_op: | |
3e43a32a MS |
20163 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
20164 | &bytes_read); | |
473b7be6 | 20165 | line_ptr += bytes_read; |
a8c50c1f | 20166 | extended_end = line_ptr + extended_len; |
c906108c SS |
20167 | extended_op = read_1_byte (abfd, line_ptr); |
20168 | line_ptr += 1; | |
20169 | switch (extended_op) | |
20170 | { | |
20171 | case DW_LNE_end_sequence: | |
6f77053d PA |
20172 | state_machine.handle_end_sequence (); |
20173 | end_sequence = true; | |
c906108c SS |
20174 | break; |
20175 | case DW_LNE_set_address: | |
d9b3de22 DE |
20176 | { |
20177 | CORE_ADDR address | |
c8a7a66f | 20178 | = cu->header.read_address (abfd, line_ptr, &bytes_read); |
d9b3de22 | 20179 | line_ptr += bytes_read; |
6f77053d PA |
20180 | |
20181 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 20182 | lowpc - baseaddr, address); |
6f77053d | 20183 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 20184 | } |
c906108c SS |
20185 | break; |
20186 | case DW_LNE_define_file: | |
debd256d | 20187 | { |
d521ce57 | 20188 | const char *cur_file; |
ecfb656c PA |
20189 | unsigned int mod_time, length; |
20190 | dir_index dindex; | |
6e70227d | 20191 | |
3e43a32a MS |
20192 | cur_file = read_direct_string (abfd, line_ptr, |
20193 | &bytes_read); | |
debd256d | 20194 | line_ptr += bytes_read; |
ecfb656c | 20195 | dindex = (dir_index) |
debd256d JB |
20196 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
20197 | line_ptr += bytes_read; | |
20198 | mod_time = | |
20199 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20200 | line_ptr += bytes_read; | |
20201 | length = | |
20202 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20203 | line_ptr += bytes_read; | |
ecfb656c | 20204 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 20205 | } |
c906108c | 20206 | break; |
d0c6ba3d | 20207 | case DW_LNE_set_discriminator: |
6f77053d PA |
20208 | { |
20209 | /* The discriminator is not interesting to the | |
20210 | debugger; just ignore it. We still need to | |
20211 | check its value though: | |
20212 | if there are consecutive entries for the same | |
20213 | (non-prologue) line we want to coalesce them. | |
20214 | PR 17276. */ | |
20215 | unsigned int discr | |
20216 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20217 | line_ptr += bytes_read; | |
20218 | ||
20219 | state_machine.handle_set_discriminator (discr); | |
20220 | } | |
d0c6ba3d | 20221 | break; |
c906108c | 20222 | default: |
b98664d3 | 20223 | complaint (_("mangled .debug_line section")); |
debd256d | 20224 | return; |
c906108c | 20225 | } |
a8c50c1f DJ |
20226 | /* Make sure that we parsed the extended op correctly. If e.g. |
20227 | we expected a different address size than the producer used, | |
20228 | we may have read the wrong number of bytes. */ | |
20229 | if (line_ptr != extended_end) | |
20230 | { | |
b98664d3 | 20231 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
20232 | return; |
20233 | } | |
c906108c SS |
20234 | break; |
20235 | case DW_LNS_copy: | |
6f77053d | 20236 | state_machine.handle_copy (); |
c906108c SS |
20237 | break; |
20238 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
20239 | { |
20240 | CORE_ADDR adjust | |
20241 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 20242 | line_ptr += bytes_read; |
6f77053d PA |
20243 | |
20244 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 20245 | } |
c906108c SS |
20246 | break; |
20247 | case DW_LNS_advance_line: | |
a05a36a5 DE |
20248 | { |
20249 | int line_delta | |
20250 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 20251 | line_ptr += bytes_read; |
6f77053d PA |
20252 | |
20253 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 20254 | } |
c906108c SS |
20255 | break; |
20256 | case DW_LNS_set_file: | |
d9b3de22 | 20257 | { |
6f77053d | 20258 | file_name_index file |
ecfb656c PA |
20259 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
20260 | &bytes_read); | |
d9b3de22 | 20261 | line_ptr += bytes_read; |
8c43009f | 20262 | |
6f77053d | 20263 | state_machine.handle_set_file (file); |
d9b3de22 | 20264 | } |
c906108c SS |
20265 | break; |
20266 | case DW_LNS_set_column: | |
0ad93d4f | 20267 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
20268 | line_ptr += bytes_read; |
20269 | break; | |
20270 | case DW_LNS_negate_stmt: | |
6f77053d | 20271 | state_machine.handle_negate_stmt (); |
c906108c SS |
20272 | break; |
20273 | case DW_LNS_set_basic_block: | |
c906108c | 20274 | break; |
c2c6d25f JM |
20275 | /* Add to the address register of the state machine the |
20276 | address increment value corresponding to special opcode | |
a738430d MK |
20277 | 255. I.e., this value is scaled by the minimum |
20278 | instruction length since special opcode 255 would have | |
b021a221 | 20279 | scaled the increment. */ |
c906108c | 20280 | case DW_LNS_const_add_pc: |
6f77053d | 20281 | state_machine.handle_const_add_pc (); |
c906108c SS |
20282 | break; |
20283 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 20284 | { |
6f77053d | 20285 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 20286 | line_ptr += 2; |
6f77053d PA |
20287 | |
20288 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 20289 | } |
c906108c | 20290 | break; |
9aa1fe7e | 20291 | default: |
a738430d MK |
20292 | { |
20293 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 20294 | int i; |
a738430d | 20295 | |
debd256d | 20296 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
20297 | { |
20298 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20299 | line_ptr += bytes_read; | |
20300 | } | |
20301 | } | |
c906108c SS |
20302 | } |
20303 | } | |
d9b3de22 DE |
20304 | |
20305 | if (!end_sequence) | |
20306 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
20307 | ||
20308 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
20309 | in which case we still finish recording the last line). */ | |
6f77053d | 20310 | state_machine.record_line (true); |
c906108c | 20311 | } |
f3f5162e DE |
20312 | } |
20313 | ||
20314 | /* Decode the Line Number Program (LNP) for the given line_header | |
20315 | structure and CU. The actual information extracted and the type | |
20316 | of structures created from the LNP depends on the value of PST. | |
20317 | ||
20318 | 1. If PST is NULL, then this procedure uses the data from the program | |
20319 | to create all necessary symbol tables, and their linetables. | |
20320 | ||
20321 | 2. If PST is not NULL, this procedure reads the program to determine | |
20322 | the list of files included by the unit represented by PST, and | |
20323 | builds all the associated partial symbol tables. | |
20324 | ||
20325 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
20326 | It is used for relative paths in the line table. | |
20327 | NOTE: When processing partial symtabs (pst != NULL), | |
20328 | comp_dir == pst->dirname. | |
20329 | ||
20330 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
20331 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
20332 | symtab we don't use it in the name of the psymtabs we create. | |
20333 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
20334 | A good testcase for this is mb-inline.exp. |
20335 | ||
527f3840 JK |
20336 | LOWPC is the lowest address in CU (or 0 if not known). |
20337 | ||
20338 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
20339 | for its PC<->lines mapping information. Otherwise only the filename | |
20340 | table is read in. */ | |
f3f5162e DE |
20341 | |
20342 | static void | |
20343 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 20344 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 20345 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 20346 | { |
518817b3 | 20347 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 20348 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 20349 | |
527f3840 JK |
20350 | if (decode_mapping) |
20351 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
20352 | |
20353 | if (decode_for_pst_p) | |
20354 | { | |
aaa75496 JB |
20355 | /* Now that we're done scanning the Line Header Program, we can |
20356 | create the psymtab of each included file. */ | |
7ba99d21 AT |
20357 | for (auto &file_entry : lh->file_names ()) |
20358 | if (file_entry.included_p == 1) | |
aaa75496 | 20359 | { |
c89b44cd | 20360 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 20361 | const char *include_name = |
7ba99d21 AT |
20362 | psymtab_include_file_name (lh, file_entry, pst, |
20363 | comp_dir, &name_holder); | |
c6da4cef | 20364 | if (include_name != NULL) |
aaa75496 JB |
20365 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
20366 | } | |
20367 | } | |
cb1df416 DJ |
20368 | else |
20369 | { | |
20370 | /* Make sure a symtab is created for every file, even files | |
20371 | which contain only variables (i.e. no code with associated | |
20372 | line numbers). */ | |
c24bdb02 KS |
20373 | buildsym_compunit *builder = cu->get_builder (); |
20374 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 20375 | |
7ba99d21 | 20376 | for (auto &fe : lh->file_names ()) |
cb1df416 | 20377 | { |
804d2729 | 20378 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 20379 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 20380 | { |
c24bdb02 | 20381 | builder->get_current_subfile ()->symtab |
804d2729 | 20382 | = allocate_symtab (cust, |
c24bdb02 | 20383 | builder->get_current_subfile ()->name); |
43f3e411 | 20384 | } |
c24bdb02 | 20385 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
20386 | } |
20387 | } | |
c906108c SS |
20388 | } |
20389 | ||
20390 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
20391 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 20392 | or NULL if not known. |
c906108c SS |
20393 | This routine tries to keep line numbers from identical absolute and |
20394 | relative file names in a common subfile. | |
20395 | ||
20396 | Using the `list' example from the GDB testsuite, which resides in | |
20397 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
20398 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
20399 | ||
c5aa993b | 20400 | DW_AT_name: /srcdir/list0.c |
4d663531 | 20401 | DW_AT_comp_dir: /compdir |
357e46e7 | 20402 | files.files[0].name: list0.h |
c5aa993b | 20403 | files.files[0].dir: /srcdir |
357e46e7 | 20404 | files.files[1].name: list0.c |
c5aa993b | 20405 | files.files[1].dir: /srcdir |
c906108c SS |
20406 | |
20407 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
20408 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
20409 | start_subfile will ensure that this happens provided that we pass the | |
20410 | concatenation of files.files[1].dir and files.files[1].name as the | |
20411 | subfile's name. */ | |
c906108c SS |
20412 | |
20413 | static void | |
804d2729 TT |
20414 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
20415 | const char *dirname) | |
c906108c | 20416 | { |
43816ebc | 20417 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 20418 | |
4d663531 | 20419 | /* In order not to lose the line information directory, |
4f1520fb FR |
20420 | we concatenate it to the filename when it makes sense. |
20421 | Note that the Dwarf3 standard says (speaking of filenames in line | |
20422 | information): ``The directory index is ignored for file names | |
20423 | that represent full path names''. Thus ignoring dirname in the | |
20424 | `else' branch below isn't an issue. */ | |
c906108c | 20425 | |
d5166ae1 | 20426 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 20427 | { |
43816ebc TT |
20428 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
20429 | filename = copy.get (); | |
d521ce57 | 20430 | } |
c906108c | 20431 | |
c24bdb02 | 20432 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
20433 | } |
20434 | ||
804d2729 TT |
20435 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
20436 | buildsym_compunit constructor. */ | |
f4dc4d17 | 20437 | |
c24bdb02 KS |
20438 | struct compunit_symtab * |
20439 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
20440 | CORE_ADDR low_pc) | |
f4dc4d17 | 20441 | { |
c24bdb02 | 20442 | gdb_assert (m_builder == nullptr); |
43f3e411 | 20443 | |
c24bdb02 KS |
20444 | m_builder.reset (new struct buildsym_compunit |
20445 | (per_cu->dwarf2_per_objfile->objfile, | |
20446 | name, comp_dir, language, low_pc)); | |
93b8bea4 | 20447 | |
c24bdb02 | 20448 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 20449 | |
c24bdb02 KS |
20450 | get_builder ()->record_debugformat ("DWARF 2"); |
20451 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 20452 | |
c24bdb02 | 20453 | processing_has_namespace_info = false; |
43f3e411 | 20454 | |
c24bdb02 | 20455 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
20456 | } |
20457 | ||
4c2df51b DJ |
20458 | static void |
20459 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 20460 | struct dwarf2_cu *cu) |
4c2df51b | 20461 | { |
518817b3 | 20462 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e7c27a73 DJ |
20463 | struct comp_unit_head *cu_header = &cu->header; |
20464 | ||
4c2df51b DJ |
20465 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
20466 | code here to turn a symbol with DW_AT_external and a | |
20467 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
20468 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
20469 | with some versions of binutils) where shared libraries could have | |
20470 | relocations against symbols in their debug information - the | |
20471 | minimal symbol would have the right address, but the debug info | |
20472 | would not. It's no longer necessary, because we will explicitly | |
20473 | apply relocations when we read in the debug information now. */ | |
20474 | ||
20475 | /* A DW_AT_location attribute with no contents indicates that a | |
20476 | variable has been optimized away. */ | |
4fc6c0d5 | 20477 | if (attr->form_is_block () && DW_BLOCK (attr)->size == 0) |
4c2df51b | 20478 | { |
f1e6e072 | 20479 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
20480 | return; |
20481 | } | |
20482 | ||
20483 | /* Handle one degenerate form of location expression specially, to | |
20484 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
20485 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
20486 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 20487 | |
4fc6c0d5 | 20488 | if (attr->form_is_block () |
3019eac3 DE |
20489 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
20490 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
336d760d AT |
20491 | || ((DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index |
20492 | || DW_BLOCK (attr)->data[0] == DW_OP_addrx) | |
3019eac3 DE |
20493 | && (DW_BLOCK (attr)->size |
20494 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 20495 | { |
891d2f0b | 20496 | unsigned int dummy; |
4c2df51b | 20497 | |
3019eac3 | 20498 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
c8a7a66f TT |
20499 | SET_SYMBOL_VALUE_ADDRESS |
20500 | (sym, cu->header.read_address (objfile->obfd, | |
20501 | DW_BLOCK (attr)->data + 1, | |
20502 | &dummy)); | |
3019eac3 | 20503 | else |
38583298 TT |
20504 | SET_SYMBOL_VALUE_ADDRESS |
20505 | (sym, read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, | |
20506 | &dummy)); | |
f1e6e072 | 20507 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b | 20508 | fixup_symbol_section (sym, objfile); |
6a053cb1 TT |
20509 | SET_SYMBOL_VALUE_ADDRESS |
20510 | (sym, | |
20511 | SYMBOL_VALUE_ADDRESS (sym) | |
20512 | + objfile->section_offsets[SYMBOL_SECTION (sym)]); | |
4c2df51b DJ |
20513 | return; |
20514 | } | |
20515 | ||
20516 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
20517 | expression evaluator, and use LOC_COMPUTED only when necessary | |
20518 | (i.e. when the value of a register or memory location is | |
20519 | referenced, or a thread-local block, etc.). Then again, it might | |
20520 | not be worthwhile. I'm assuming that it isn't unless performance | |
20521 | or memory numbers show me otherwise. */ | |
20522 | ||
f1e6e072 | 20523 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 20524 | |
f1e6e072 | 20525 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 20526 | cu->has_loclist = true; |
4c2df51b DJ |
20527 | } |
20528 | ||
c906108c SS |
20529 | /* Given a pointer to a DWARF information entry, figure out if we need |
20530 | to make a symbol table entry for it, and if so, create a new entry | |
20531 | and return a pointer to it. | |
20532 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
20533 | used the passed type. |
20534 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
20535 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
20536 | |
20537 | static struct symbol * | |
5e2db402 TT |
20538 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
20539 | struct symbol *space) | |
c906108c | 20540 | { |
518817b3 SM |
20541 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20542 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 20543 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 20544 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 20545 | struct symbol *sym = NULL; |
15d034d0 | 20546 | const char *name; |
c906108c SS |
20547 | struct attribute *attr = NULL; |
20548 | struct attribute *attr2 = NULL; | |
e142c38c | 20549 | CORE_ADDR baseaddr; |
e37fd15a SW |
20550 | struct pending **list_to_add = NULL; |
20551 | ||
edb3359d | 20552 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 20553 | |
b3b3bada | 20554 | baseaddr = objfile->text_section_offset (); |
c906108c | 20555 | |
94af9270 | 20556 | name = dwarf2_name (die, cu); |
c906108c SS |
20557 | if (name) |
20558 | { | |
94af9270 | 20559 | const char *linkagename; |
34eaf542 | 20560 | int suppress_add = 0; |
94af9270 | 20561 | |
34eaf542 TT |
20562 | if (space) |
20563 | sym = space; | |
20564 | else | |
e623cf5d | 20565 | sym = allocate_symbol (objfile); |
c906108c | 20566 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
20567 | |
20568 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 20569 | sym->set_language (cu->language, &objfile->objfile_obstack); |
94af9270 | 20570 | linkagename = dwarf2_physname (name, die, cu); |
4d4eaa30 | 20571 | sym->compute_and_set_names (linkagename, false, objfile->per_bfd); |
c906108c | 20572 | |
f55ee35c JK |
20573 | /* Fortran does not have mangling standard and the mangling does differ |
20574 | between gfortran, iFort etc. */ | |
20575 | if (cu->language == language_fortran | |
468c0cbb | 20576 | && symbol_get_demangled_name (sym) == NULL) |
ff985671 | 20577 | sym->set_demangled_name (dwarf2_full_name (name, die, cu), NULL); |
f55ee35c | 20578 | |
c906108c | 20579 | /* Default assumptions. |
c5aa993b | 20580 | Use the passed type or decode it from the die. */ |
176620f1 | 20581 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 20582 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
20583 | if (type != NULL) |
20584 | SYMBOL_TYPE (sym) = type; | |
20585 | else | |
e7c27a73 | 20586 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
20587 | attr = dwarf2_attr (die, |
20588 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
20589 | cu); | |
435d3d88 | 20590 | if (attr != nullptr) |
c906108c SS |
20591 | { |
20592 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
20593 | } | |
cb1df416 | 20594 | |
edb3359d DJ |
20595 | attr = dwarf2_attr (die, |
20596 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
20597 | cu); | |
435d3d88 | 20598 | if (attr != nullptr) |
cb1df416 | 20599 | { |
ecfb656c | 20600 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 20601 | struct file_entry *fe; |
9a619af0 | 20602 | |
ecfb656c PA |
20603 | if (cu->line_header != NULL) |
20604 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
20605 | else |
20606 | fe = NULL; | |
20607 | ||
20608 | if (fe == NULL) | |
b98664d3 | 20609 | complaint (_("file index out of range")); |
8c43009f PA |
20610 | else |
20611 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
20612 | } |
20613 | ||
c906108c SS |
20614 | switch (die->tag) |
20615 | { | |
20616 | case DW_TAG_label: | |
e142c38c | 20617 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 20618 | if (attr != nullptr) |
3e29f34a MR |
20619 | { |
20620 | CORE_ADDR addr; | |
20621 | ||
cd6c91b4 | 20622 | addr = attr->value_as_address (); |
3e29f34a | 20623 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 20624 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
3e29f34a | 20625 | } |
0f5238ed TT |
20626 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
20627 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 20628 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
d3cb6808 | 20629 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
20630 | break; |
20631 | case DW_TAG_subprogram: | |
20632 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
20633 | finish_block. */ | |
f1e6e072 | 20634 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 20635 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d | 20636 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
0a4b0913 AB |
20637 | || cu->language == language_ada |
20638 | || cu->language == language_fortran) | |
c906108c | 20639 | { |
2cfa0c8d | 20640 | /* Subprograms marked external are stored as a global symbol. |
0a4b0913 AB |
20641 | Ada and Fortran subprograms, whether marked external or |
20642 | not, are always stored as a global symbol, because we want | |
20643 | to be able to access them globally. For instance, we want | |
20644 | to be able to break on a nested subprogram without having | |
20645 | to specify the context. */ | |
c24bdb02 | 20646 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
20647 | } |
20648 | else | |
20649 | { | |
e37fd15a | 20650 | list_to_add = cu->list_in_scope; |
c906108c SS |
20651 | } |
20652 | break; | |
edb3359d DJ |
20653 | case DW_TAG_inlined_subroutine: |
20654 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
20655 | finish_block. */ | |
f1e6e072 | 20656 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 20657 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 20658 | list_to_add = cu->list_in_scope; |
edb3359d | 20659 | break; |
34eaf542 TT |
20660 | case DW_TAG_template_value_param: |
20661 | suppress_add = 1; | |
20662 | /* Fall through. */ | |
72929c62 | 20663 | case DW_TAG_constant: |
c906108c | 20664 | case DW_TAG_variable: |
254e6b9e | 20665 | case DW_TAG_member: |
0963b4bd MS |
20666 | /* Compilation with minimal debug info may result in |
20667 | variables with missing type entries. Change the | |
20668 | misleading `void' type to something sensible. */ | |
c906108c | 20669 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
46a4882b | 20670 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 20671 | |
e142c38c | 20672 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
20673 | /* In the case of DW_TAG_member, we should only be called for |
20674 | static const members. */ | |
20675 | if (die->tag == DW_TAG_member) | |
20676 | { | |
3863f96c DE |
20677 | /* dwarf2_add_field uses die_is_declaration, |
20678 | so we do the same. */ | |
254e6b9e DE |
20679 | gdb_assert (die_is_declaration (die, cu)); |
20680 | gdb_assert (attr); | |
20681 | } | |
435d3d88 | 20682 | if (attr != nullptr) |
c906108c | 20683 | { |
e7c27a73 | 20684 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 20685 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 20686 | if (!suppress_add) |
34eaf542 TT |
20687 | { |
20688 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
c24bdb02 | 20689 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 20690 | else |
e37fd15a | 20691 | list_to_add = cu->list_in_scope; |
34eaf542 | 20692 | } |
c906108c SS |
20693 | break; |
20694 | } | |
e142c38c | 20695 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 20696 | if (attr != nullptr) |
c906108c | 20697 | { |
e7c27a73 | 20698 | var_decode_location (attr, sym, cu); |
e142c38c | 20699 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
20700 | |
20701 | /* Fortran explicitly imports any global symbols to the local | |
20702 | scope by DW_TAG_common_block. */ | |
20703 | if (cu->language == language_fortran && die->parent | |
20704 | && die->parent->tag == DW_TAG_common_block) | |
20705 | attr2 = NULL; | |
20706 | ||
caac4577 JG |
20707 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
20708 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
20709 | && !dwarf2_per_objfile->has_section_at_zero) | |
20710 | { | |
20711 | /* When a static variable is eliminated by the linker, | |
20712 | the corresponding debug information is not stripped | |
20713 | out, but the variable address is set to null; | |
20714 | do not add such variables into symbol table. */ | |
20715 | } | |
20716 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 20717 | { |
4b610737 TT |
20718 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
20719 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
20720 | && dwarf2_per_objfile->can_copy) | |
20721 | { | |
20722 | /* A global static variable might be subject to | |
20723 | copy relocation. We first check for a local | |
20724 | minsym, though, because maybe the symbol was | |
20725 | marked hidden, in which case this would not | |
20726 | apply. */ | |
20727 | bound_minimal_symbol found | |
20728 | = (lookup_minimal_symbol_linkage | |
987012b8 | 20729 | (sym->linkage_name (), objfile)); |
4b610737 TT |
20730 | if (found.minsym != nullptr) |
20731 | sym->maybe_copied = 1; | |
20732 | } | |
f55ee35c | 20733 | |
1c809c68 TT |
20734 | /* A variable with DW_AT_external is never static, |
20735 | but it may be block-scoped. */ | |
804d2729 | 20736 | list_to_add |
c24bdb02 KS |
20737 | = ((cu->list_in_scope |
20738 | == cu->get_builder ()->get_file_symbols ()) | |
20739 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 20740 | : cu->list_in_scope); |
1c809c68 | 20741 | } |
c906108c | 20742 | else |
e37fd15a | 20743 | list_to_add = cu->list_in_scope; |
c906108c SS |
20744 | } |
20745 | else | |
20746 | { | |
20747 | /* We do not know the address of this symbol. | |
c5aa993b JM |
20748 | If it is an external symbol and we have type information |
20749 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
20750 | The address of the variable will then be determined from | |
20751 | the minimal symbol table whenever the variable is | |
20752 | referenced. */ | |
e142c38c | 20753 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
20754 | |
20755 | /* Fortran explicitly imports any global symbols to the local | |
20756 | scope by DW_TAG_common_block. */ | |
20757 | if (cu->language == language_fortran && die->parent | |
20758 | && die->parent->tag == DW_TAG_common_block) | |
20759 | { | |
20760 | /* SYMBOL_CLASS doesn't matter here because | |
20761 | read_common_block is going to reset it. */ | |
20762 | if (!suppress_add) | |
20763 | list_to_add = cu->list_in_scope; | |
20764 | } | |
20765 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
20766 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 20767 | { |
0fe7935b DJ |
20768 | /* A variable with DW_AT_external is never static, but it |
20769 | may be block-scoped. */ | |
804d2729 | 20770 | list_to_add |
c24bdb02 KS |
20771 | = ((cu->list_in_scope |
20772 | == cu->get_builder ()->get_file_symbols ()) | |
20773 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 20774 | : cu->list_in_scope); |
0fe7935b | 20775 | |
f1e6e072 | 20776 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 20777 | } |
442ddf59 JK |
20778 | else if (!die_is_declaration (die, cu)) |
20779 | { | |
20780 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
20781 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
20782 | if (!suppress_add) |
20783 | list_to_add = cu->list_in_scope; | |
442ddf59 | 20784 | } |
c906108c SS |
20785 | } |
20786 | break; | |
20787 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
20788 | { |
20789 | /* If we are inside a function, mark this as an argument. If | |
20790 | not, we might be looking at an argument to an inlined function | |
20791 | when we do not have enough information to show inlined frames; | |
20792 | pretend it's a local variable in that case so that the user can | |
20793 | still see it. */ | |
804d2729 | 20794 | struct context_stack *curr |
c24bdb02 | 20795 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
20796 | if (curr != nullptr && curr->name != nullptr) |
20797 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
20798 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 20799 | if (attr != nullptr) |
a60f3166 TT |
20800 | { |
20801 | var_decode_location (attr, sym, cu); | |
20802 | } | |
20803 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 20804 | if (attr != nullptr) |
a60f3166 TT |
20805 | { |
20806 | dwarf2_const_value (attr, sym, cu); | |
20807 | } | |
f346a30d | 20808 | |
a60f3166 TT |
20809 | list_to_add = cu->list_in_scope; |
20810 | } | |
c906108c SS |
20811 | break; |
20812 | case DW_TAG_unspecified_parameters: | |
20813 | /* From varargs functions; gdb doesn't seem to have any | |
20814 | interest in this information, so just ignore it for now. | |
20815 | (FIXME?) */ | |
20816 | break; | |
34eaf542 TT |
20817 | case DW_TAG_template_type_param: |
20818 | suppress_add = 1; | |
20819 | /* Fall through. */ | |
c906108c | 20820 | case DW_TAG_class_type: |
680b30c7 | 20821 | case DW_TAG_interface_type: |
c906108c SS |
20822 | case DW_TAG_structure_type: |
20823 | case DW_TAG_union_type: | |
72019c9c | 20824 | case DW_TAG_set_type: |
c906108c | 20825 | case DW_TAG_enumeration_type: |
f1e6e072 | 20826 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 20827 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 20828 | |
63d06c5c | 20829 | { |
9c37b5ae | 20830 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
20831 | really ever be static objects: otherwise, if you try |
20832 | to, say, break of a class's method and you're in a file | |
20833 | which doesn't mention that class, it won't work unless | |
20834 | the check for all static symbols in lookup_symbol_aux | |
20835 | saves you. See the OtherFileClass tests in | |
20836 | gdb.c++/namespace.exp. */ | |
20837 | ||
e37fd15a | 20838 | if (!suppress_add) |
34eaf542 | 20839 | { |
c24bdb02 | 20840 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 20841 | list_to_add |
c24bdb02 | 20842 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 20843 | && cu->language == language_cplus |
c24bdb02 | 20844 | ? builder->get_global_symbols () |
804d2729 | 20845 | : cu->list_in_scope); |
63d06c5c | 20846 | |
64382290 | 20847 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 20848 | ... }" also defines a typedef for "foo". */ |
64382290 | 20849 | if (cu->language == language_cplus |
45280282 | 20850 | || cu->language == language_ada |
c44af4eb TT |
20851 | || cu->language == language_d |
20852 | || cu->language == language_rust) | |
64382290 TT |
20853 | { |
20854 | /* The symbol's name is already allocated along | |
20855 | with this objfile, so we don't need to | |
20856 | duplicate it for the type. */ | |
20857 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
987012b8 | 20858 | TYPE_NAME (SYMBOL_TYPE (sym)) = sym->search_name (); |
64382290 | 20859 | } |
63d06c5c DC |
20860 | } |
20861 | } | |
c906108c SS |
20862 | break; |
20863 | case DW_TAG_typedef: | |
f1e6e072 | 20864 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 20865 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 20866 | list_to_add = cu->list_in_scope; |
63d06c5c | 20867 | break; |
c906108c | 20868 | case DW_TAG_base_type: |
a02abb62 | 20869 | case DW_TAG_subrange_type: |
f1e6e072 | 20870 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 20871 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 20872 | list_to_add = cu->list_in_scope; |
c906108c SS |
20873 | break; |
20874 | case DW_TAG_enumerator: | |
e142c38c | 20875 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 20876 | if (attr != nullptr) |
c906108c | 20877 | { |
e7c27a73 | 20878 | dwarf2_const_value (attr, sym, cu); |
c906108c | 20879 | } |
63d06c5c DC |
20880 | { |
20881 | /* NOTE: carlton/2003-11-10: See comment above in the | |
20882 | DW_TAG_class_type, etc. block. */ | |
20883 | ||
804d2729 | 20884 | list_to_add |
c24bdb02 | 20885 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 20886 | && cu->language == language_cplus |
c24bdb02 | 20887 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 20888 | : cu->list_in_scope); |
63d06c5c | 20889 | } |
c906108c | 20890 | break; |
74921315 | 20891 | case DW_TAG_imported_declaration: |
5c4e30ca | 20892 | case DW_TAG_namespace: |
f1e6e072 | 20893 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 20894 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 20895 | break; |
530e8392 KB |
20896 | case DW_TAG_module: |
20897 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
20898 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 20899 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 20900 | break; |
4357ac6c | 20901 | case DW_TAG_common_block: |
f1e6e072 | 20902 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 20903 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 20904 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 20905 | break; |
c906108c SS |
20906 | default: |
20907 | /* Not a tag we recognize. Hopefully we aren't processing | |
20908 | trash data, but since we must specifically ignore things | |
20909 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 20910 | this point. */ |
b98664d3 | 20911 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 20912 | dwarf_tag_name (die->tag)); |
c906108c SS |
20913 | break; |
20914 | } | |
df8a16a1 | 20915 | |
e37fd15a SW |
20916 | if (suppress_add) |
20917 | { | |
20918 | sym->hash_next = objfile->template_symbols; | |
20919 | objfile->template_symbols = sym; | |
20920 | list_to_add = NULL; | |
20921 | } | |
20922 | ||
20923 | if (list_to_add != NULL) | |
d3cb6808 | 20924 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 20925 | |
df8a16a1 DJ |
20926 | /* For the benefit of old versions of GCC, check for anonymous |
20927 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 20928 | if (!cu->processing_has_namespace_info |
94af9270 | 20929 | && cu->language == language_cplus) |
c24bdb02 | 20930 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
20931 | } |
20932 | return (sym); | |
20933 | } | |
20934 | ||
98bfdba5 PA |
20935 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
20936 | zero-extend it as appropriate for the symbol's type. The DWARF | |
20937 | standard (v4) is not entirely clear about the meaning of using | |
20938 | DW_FORM_dataN for a constant with a signed type, where the type is | |
20939 | wider than the data. The conclusion of a discussion on the DWARF | |
20940 | list was that this is unspecified. We choose to always zero-extend | |
20941 | because that is the interpretation long in use by GCC. */ | |
c906108c | 20942 | |
98bfdba5 | 20943 | static gdb_byte * |
ff39bb5e | 20944 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 20945 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 20946 | { |
518817b3 | 20947 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e17a4113 UW |
20948 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
20949 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
20950 | LONGEST l = DW_UNSND (attr); |
20951 | ||
20952 | if (bits < sizeof (*value) * 8) | |
20953 | { | |
20954 | l &= ((LONGEST) 1 << bits) - 1; | |
20955 | *value = l; | |
20956 | } | |
20957 | else if (bits == sizeof (*value) * 8) | |
20958 | *value = l; | |
20959 | else | |
20960 | { | |
224c3ddb | 20961 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
20962 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
20963 | return bytes; | |
20964 | } | |
20965 | ||
20966 | return NULL; | |
20967 | } | |
20968 | ||
20969 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
20970 | the value does not fit in *VALUE, set *BYTES - either already | |
20971 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
20972 | or, set *BATON, if we translated the constant to a location | |
20973 | expression. */ | |
20974 | ||
20975 | static void | |
ff39bb5e | 20976 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
20977 | const char *name, struct obstack *obstack, |
20978 | struct dwarf2_cu *cu, | |
d521ce57 | 20979 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
20980 | struct dwarf2_locexpr_baton **baton) |
20981 | { | |
518817b3 | 20982 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
98bfdba5 | 20983 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 20984 | struct dwarf_block *blk; |
98bfdba5 PA |
20985 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
20986 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
20987 | ||
20988 | *value = 0; | |
20989 | *bytes = NULL; | |
20990 | *baton = NULL; | |
c906108c SS |
20991 | |
20992 | switch (attr->form) | |
20993 | { | |
20994 | case DW_FORM_addr: | |
336d760d | 20995 | case DW_FORM_addrx: |
3019eac3 | 20996 | case DW_FORM_GNU_addr_index: |
ac56253d | 20997 | { |
ac56253d TT |
20998 | gdb_byte *data; |
20999 | ||
98bfdba5 PA |
21000 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
21001 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 21002 | cu_header->addr_size, |
98bfdba5 | 21003 | TYPE_LENGTH (type)); |
ac56253d TT |
21004 | /* Symbols of this form are reasonably rare, so we just |
21005 | piggyback on the existing location code rather than writing | |
21006 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 21007 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
98bfdba5 PA |
21008 | (*baton)->per_cu = cu->per_cu; |
21009 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 21010 | |
98bfdba5 | 21011 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 21012 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 21013 | (*baton)->data = data; |
ac56253d TT |
21014 | |
21015 | data[0] = DW_OP_addr; | |
21016 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
21017 | byte_order, DW_ADDR (attr)); | |
21018 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 21019 | } |
c906108c | 21020 | break; |
4ac36638 | 21021 | case DW_FORM_string: |
93b5768b | 21022 | case DW_FORM_strp: |
cf532bd1 | 21023 | case DW_FORM_strx: |
3019eac3 | 21024 | case DW_FORM_GNU_str_index: |
36586728 | 21025 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
21026 | /* DW_STRING is already allocated on the objfile obstack, point |
21027 | directly to it. */ | |
d521ce57 | 21028 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 21029 | break; |
c906108c SS |
21030 | case DW_FORM_block1: |
21031 | case DW_FORM_block2: | |
21032 | case DW_FORM_block4: | |
21033 | case DW_FORM_block: | |
2dc7f7b3 | 21034 | case DW_FORM_exprloc: |
0224619f | 21035 | case DW_FORM_data16: |
c906108c | 21036 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
21037 | if (TYPE_LENGTH (type) != blk->size) |
21038 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
21039 | TYPE_LENGTH (type)); | |
21040 | *bytes = blk->data; | |
c906108c | 21041 | break; |
2df3850c JM |
21042 | |
21043 | /* The DW_AT_const_value attributes are supposed to carry the | |
21044 | symbol's value "represented as it would be on the target | |
21045 | architecture." By the time we get here, it's already been | |
21046 | converted to host endianness, so we just need to sign- or | |
21047 | zero-extend it as appropriate. */ | |
21048 | case DW_FORM_data1: | |
3aef2284 | 21049 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 21050 | break; |
c906108c | 21051 | case DW_FORM_data2: |
3aef2284 | 21052 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 21053 | break; |
c906108c | 21054 | case DW_FORM_data4: |
3aef2284 | 21055 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 21056 | break; |
c906108c | 21057 | case DW_FORM_data8: |
3aef2284 | 21058 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
21059 | break; |
21060 | ||
c906108c | 21061 | case DW_FORM_sdata: |
663c44ac | 21062 | case DW_FORM_implicit_const: |
98bfdba5 | 21063 | *value = DW_SND (attr); |
2df3850c JM |
21064 | break; |
21065 | ||
c906108c | 21066 | case DW_FORM_udata: |
98bfdba5 | 21067 | *value = DW_UNSND (attr); |
c906108c | 21068 | break; |
2df3850c | 21069 | |
c906108c | 21070 | default: |
b98664d3 | 21071 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 21072 | dwarf_form_name (attr->form)); |
98bfdba5 | 21073 | *value = 0; |
c906108c SS |
21074 | break; |
21075 | } | |
21076 | } | |
21077 | ||
2df3850c | 21078 | |
98bfdba5 PA |
21079 | /* Copy constant value from an attribute to a symbol. */ |
21080 | ||
2df3850c | 21081 | static void |
ff39bb5e | 21082 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 21083 | struct dwarf2_cu *cu) |
2df3850c | 21084 | { |
518817b3 | 21085 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
12df843f | 21086 | LONGEST value; |
d521ce57 | 21087 | const gdb_byte *bytes; |
98bfdba5 | 21088 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 21089 | |
98bfdba5 | 21090 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 21091 | sym->print_name (), |
98bfdba5 PA |
21092 | &objfile->objfile_obstack, cu, |
21093 | &value, &bytes, &baton); | |
2df3850c | 21094 | |
98bfdba5 PA |
21095 | if (baton != NULL) |
21096 | { | |
98bfdba5 | 21097 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 21098 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
21099 | } |
21100 | else if (bytes != NULL) | |
21101 | { | |
21102 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 21103 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
21104 | } |
21105 | else | |
21106 | { | |
21107 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 21108 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 21109 | } |
2df3850c JM |
21110 | } |
21111 | ||
c906108c SS |
21112 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
21113 | ||
21114 | static struct type * | |
e7c27a73 | 21115 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21116 | { |
c906108c | 21117 | struct attribute *type_attr; |
c906108c | 21118 | |
e142c38c | 21119 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
21120 | if (!type_attr) |
21121 | { | |
518817b3 | 21122 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 21123 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 21124 | return objfile_type (objfile)->builtin_void; |
c906108c | 21125 | } |
348e048f | 21126 | |
673bfd45 | 21127 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21128 | } |
21129 | ||
b4ba55a1 JB |
21130 | /* True iff CU's producer generates GNAT Ada auxiliary information |
21131 | that allows to find parallel types through that information instead | |
21132 | of having to do expensive parallel lookups by type name. */ | |
21133 | ||
21134 | static int | |
21135 | need_gnat_info (struct dwarf2_cu *cu) | |
21136 | { | |
de4cb04a JB |
21137 | /* Assume that the Ada compiler was GNAT, which always produces |
21138 | the auxiliary information. */ | |
21139 | return (cu->language == language_ada); | |
b4ba55a1 JB |
21140 | } |
21141 | ||
b4ba55a1 JB |
21142 | /* Return the auxiliary type of the die in question using its |
21143 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
21144 | attribute is not present. */ | |
21145 | ||
21146 | static struct type * | |
21147 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
21148 | { | |
b4ba55a1 | 21149 | struct attribute *type_attr; |
b4ba55a1 JB |
21150 | |
21151 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
21152 | if (!type_attr) | |
21153 | return NULL; | |
21154 | ||
673bfd45 | 21155 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
21156 | } |
21157 | ||
21158 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
21159 | descriptive type accordingly. */ | |
21160 | ||
21161 | static void | |
21162 | set_descriptive_type (struct type *type, struct die_info *die, | |
21163 | struct dwarf2_cu *cu) | |
21164 | { | |
21165 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
21166 | ||
21167 | if (descriptive_type) | |
21168 | { | |
21169 | ALLOCATE_GNAT_AUX_TYPE (type); | |
21170 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
21171 | } | |
21172 | } | |
21173 | ||
c906108c SS |
21174 | /* Return the containing type of the die in question using its |
21175 | DW_AT_containing_type attribute. */ | |
21176 | ||
21177 | static struct type * | |
e7c27a73 | 21178 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21179 | { |
c906108c | 21180 | struct attribute *type_attr; |
518817b3 | 21181 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 21182 | |
e142c38c | 21183 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
21184 | if (!type_attr) |
21185 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 21186 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 21187 | |
673bfd45 | 21188 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21189 | } |
21190 | ||
ac9ec31b DE |
21191 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
21192 | ||
21193 | static struct type * | |
21194 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
21195 | { | |
518817b3 SM |
21196 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21197 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b | 21198 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
528e1572 | 21199 | char *saved; |
ac9ec31b | 21200 | |
528e1572 SM |
21201 | std::string message |
21202 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
21203 | objfile_name (objfile), | |
21204 | sect_offset_str (cu->header.sect_off), | |
21205 | sect_offset_str (die->sect_off)); | |
efba19b0 | 21206 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 21207 | |
19f392bc | 21208 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
21209 | } |
21210 | ||
673bfd45 | 21211 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
21212 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
21213 | DW_AT_containing_type. | |
673bfd45 DE |
21214 | If there is no type substitute an error marker. */ |
21215 | ||
c906108c | 21216 | static struct type * |
ff39bb5e | 21217 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 21218 | struct dwarf2_cu *cu) |
c906108c | 21219 | { |
518817b3 SM |
21220 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21221 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 21222 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
f792889a DJ |
21223 | struct type *this_type; |
21224 | ||
ac9ec31b DE |
21225 | gdb_assert (attr->name == DW_AT_type |
21226 | || attr->name == DW_AT_GNAT_descriptive_type | |
21227 | || attr->name == DW_AT_containing_type); | |
21228 | ||
673bfd45 DE |
21229 | /* First see if we have it cached. */ |
21230 | ||
36586728 TT |
21231 | if (attr->form == DW_FORM_GNU_ref_alt) |
21232 | { | |
21233 | struct dwarf2_per_cu_data *per_cu; | |
0826b30a | 21234 | sect_offset sect_off = attr->get_ref_die_offset (); |
36586728 | 21235 | |
ed2dc618 SM |
21236 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, |
21237 | dwarf2_per_objfile); | |
9c541725 | 21238 | this_type = get_die_type_at_offset (sect_off, per_cu); |
36586728 | 21239 | } |
cd6c91b4 | 21240 | else if (attr->form_is_ref ()) |
673bfd45 | 21241 | { |
0826b30a | 21242 | sect_offset sect_off = attr->get_ref_die_offset (); |
673bfd45 | 21243 | |
9c541725 | 21244 | this_type = get_die_type_at_offset (sect_off, cu->per_cu); |
673bfd45 | 21245 | } |
55f1336d | 21246 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 21247 | { |
ac9ec31b | 21248 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 21249 | |
ac9ec31b | 21250 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
21251 | } |
21252 | else | |
21253 | { | |
b98664d3 | 21254 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
21255 | " at %s [in module %s]"), |
21256 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 21257 | objfile_name (objfile)); |
ac9ec31b | 21258 | return build_error_marker_type (cu, die); |
673bfd45 DE |
21259 | } |
21260 | ||
21261 | /* If not cached we need to read it in. */ | |
21262 | ||
21263 | if (this_type == NULL) | |
21264 | { | |
ac9ec31b | 21265 | struct die_info *type_die = NULL; |
673bfd45 DE |
21266 | struct dwarf2_cu *type_cu = cu; |
21267 | ||
cd6c91b4 | 21268 | if (attr->form_is_ref ()) |
ac9ec31b DE |
21269 | type_die = follow_die_ref (die, attr, &type_cu); |
21270 | if (type_die == NULL) | |
21271 | return build_error_marker_type (cu, die); | |
21272 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
21273 | from an inter-CU reference and the type's CU got expanded before |
21274 | ours. */ | |
ac9ec31b | 21275 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
21276 | } |
21277 | ||
21278 | /* If we still don't have a type use an error marker. */ | |
21279 | ||
21280 | if (this_type == NULL) | |
ac9ec31b | 21281 | return build_error_marker_type (cu, die); |
673bfd45 | 21282 | |
f792889a | 21283 | return this_type; |
c906108c SS |
21284 | } |
21285 | ||
673bfd45 DE |
21286 | /* Return the type in DIE, CU. |
21287 | Returns NULL for invalid types. | |
21288 | ||
02142a6c | 21289 | This first does a lookup in die_type_hash, |
673bfd45 DE |
21290 | and only reads the die in if necessary. |
21291 | ||
21292 | NOTE: This can be called when reading in partial or full symbols. */ | |
21293 | ||
f792889a | 21294 | static struct type * |
e7c27a73 | 21295 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21296 | { |
f792889a DJ |
21297 | struct type *this_type; |
21298 | ||
21299 | this_type = get_die_type (die, cu); | |
21300 | if (this_type) | |
21301 | return this_type; | |
21302 | ||
673bfd45 DE |
21303 | return read_type_die_1 (die, cu); |
21304 | } | |
21305 | ||
21306 | /* Read the type in DIE, CU. | |
21307 | Returns NULL for invalid types. */ | |
21308 | ||
21309 | static struct type * | |
21310 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
21311 | { | |
21312 | struct type *this_type = NULL; | |
21313 | ||
c906108c SS |
21314 | switch (die->tag) |
21315 | { | |
21316 | case DW_TAG_class_type: | |
680b30c7 | 21317 | case DW_TAG_interface_type: |
c906108c SS |
21318 | case DW_TAG_structure_type: |
21319 | case DW_TAG_union_type: | |
f792889a | 21320 | this_type = read_structure_type (die, cu); |
c906108c SS |
21321 | break; |
21322 | case DW_TAG_enumeration_type: | |
f792889a | 21323 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
21324 | break; |
21325 | case DW_TAG_subprogram: | |
21326 | case DW_TAG_subroutine_type: | |
edb3359d | 21327 | case DW_TAG_inlined_subroutine: |
f792889a | 21328 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
21329 | break; |
21330 | case DW_TAG_array_type: | |
f792889a | 21331 | this_type = read_array_type (die, cu); |
c906108c | 21332 | break; |
72019c9c | 21333 | case DW_TAG_set_type: |
f792889a | 21334 | this_type = read_set_type (die, cu); |
72019c9c | 21335 | break; |
c906108c | 21336 | case DW_TAG_pointer_type: |
f792889a | 21337 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
21338 | break; |
21339 | case DW_TAG_ptr_to_member_type: | |
f792889a | 21340 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
21341 | break; |
21342 | case DW_TAG_reference_type: | |
4297a3f0 AV |
21343 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
21344 | break; | |
21345 | case DW_TAG_rvalue_reference_type: | |
21346 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
21347 | break; |
21348 | case DW_TAG_const_type: | |
f792889a | 21349 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
21350 | break; |
21351 | case DW_TAG_volatile_type: | |
f792889a | 21352 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 21353 | break; |
06d66ee9 TT |
21354 | case DW_TAG_restrict_type: |
21355 | this_type = read_tag_restrict_type (die, cu); | |
21356 | break; | |
c906108c | 21357 | case DW_TAG_string_type: |
f792889a | 21358 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
21359 | break; |
21360 | case DW_TAG_typedef: | |
f792889a | 21361 | this_type = read_typedef (die, cu); |
c906108c | 21362 | break; |
a02abb62 | 21363 | case DW_TAG_subrange_type: |
f792889a | 21364 | this_type = read_subrange_type (die, cu); |
a02abb62 | 21365 | break; |
c906108c | 21366 | case DW_TAG_base_type: |
f792889a | 21367 | this_type = read_base_type (die, cu); |
c906108c | 21368 | break; |
81a17f79 | 21369 | case DW_TAG_unspecified_type: |
f792889a | 21370 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 21371 | break; |
0114d602 DJ |
21372 | case DW_TAG_namespace: |
21373 | this_type = read_namespace_type (die, cu); | |
21374 | break; | |
f55ee35c JK |
21375 | case DW_TAG_module: |
21376 | this_type = read_module_type (die, cu); | |
21377 | break; | |
a2c2acaf MW |
21378 | case DW_TAG_atomic_type: |
21379 | this_type = read_tag_atomic_type (die, cu); | |
21380 | break; | |
c906108c | 21381 | default: |
b98664d3 | 21382 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 21383 | dwarf_tag_name (die->tag)); |
c906108c SS |
21384 | break; |
21385 | } | |
63d06c5c | 21386 | |
f792889a | 21387 | return this_type; |
63d06c5c DC |
21388 | } |
21389 | ||
abc72ce4 DE |
21390 | /* See if we can figure out if the class lives in a namespace. We do |
21391 | this by looking for a member function; its demangled name will | |
21392 | contain namespace info, if there is any. | |
21393 | Return the computed name or NULL. | |
21394 | Space for the result is allocated on the objfile's obstack. | |
21395 | This is the full-die version of guess_partial_die_structure_name. | |
21396 | In this case we know DIE has no useful parent. */ | |
21397 | ||
43816ebc | 21398 | static const char * |
abc72ce4 DE |
21399 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
21400 | { | |
21401 | struct die_info *spec_die; | |
21402 | struct dwarf2_cu *spec_cu; | |
21403 | struct die_info *child; | |
518817b3 | 21404 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 DE |
21405 | |
21406 | spec_cu = cu; | |
21407 | spec_die = die_specification (die, &spec_cu); | |
21408 | if (spec_die != NULL) | |
21409 | { | |
21410 | die = spec_die; | |
21411 | cu = spec_cu; | |
21412 | } | |
21413 | ||
21414 | for (child = die->child; | |
21415 | child != NULL; | |
21416 | child = child->sibling) | |
21417 | { | |
21418 | if (child->tag == DW_TAG_subprogram) | |
21419 | { | |
73b9be8b | 21420 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 21421 | |
7d45c7c3 | 21422 | if (linkage_name != NULL) |
abc72ce4 | 21423 | { |
43816ebc TT |
21424 | gdb::unique_xmalloc_ptr<char> actual_name |
21425 | (language_class_name_from_physname (cu->language_defn, | |
21426 | linkage_name)); | |
21427 | const char *name = NULL; | |
abc72ce4 DE |
21428 | |
21429 | if (actual_name != NULL) | |
21430 | { | |
15d034d0 | 21431 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
21432 | |
21433 | if (die_name != NULL | |
43816ebc | 21434 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
21435 | { |
21436 | /* Strip off the class name from the full name. | |
21437 | We want the prefix. */ | |
21438 | int die_name_len = strlen (die_name); | |
43816ebc TT |
21439 | int actual_name_len = strlen (actual_name.get ()); |
21440 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
21441 | |
21442 | /* Test for '::' as a sanity check. */ | |
21443 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 21444 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 21445 | name = obstack_strndup ( |
e3b94546 | 21446 | &objfile->per_bfd->storage_obstack, |
43816ebc | 21447 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
21448 | } |
21449 | } | |
abc72ce4 DE |
21450 | return name; |
21451 | } | |
21452 | } | |
21453 | } | |
21454 | ||
21455 | return NULL; | |
21456 | } | |
21457 | ||
96408a79 SA |
21458 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
21459 | prefix part in such case. See | |
21460 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
21461 | ||
a121b7c1 | 21462 | static const char * |
96408a79 SA |
21463 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
21464 | { | |
21465 | struct attribute *attr; | |
e6a959d6 | 21466 | const char *base; |
96408a79 SA |
21467 | |
21468 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
21469 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
21470 | return NULL; | |
21471 | ||
7d45c7c3 | 21472 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
21473 | return NULL; |
21474 | ||
73b9be8b | 21475 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
21476 | if (attr == NULL || DW_STRING (attr) == NULL) |
21477 | return NULL; | |
21478 | ||
21479 | /* dwarf2_name had to be already called. */ | |
21480 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
21481 | ||
21482 | /* Strip the base name, keep any leading namespaces/classes. */ | |
21483 | base = strrchr (DW_STRING (attr), ':'); | |
21484 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
21485 | return ""; | |
21486 | ||
518817b3 | 21487 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0cf9feb9 TT |
21488 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
21489 | DW_STRING (attr), | |
21490 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
21491 | } |
21492 | ||
fdde2d81 | 21493 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 21494 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 21495 | |
0114d602 DJ |
21496 | For example, if we're within the method foo() in the following |
21497 | code: | |
21498 | ||
21499 | namespace N { | |
21500 | class C { | |
21501 | void foo () { | |
21502 | } | |
21503 | }; | |
21504 | } | |
21505 | ||
21506 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 21507 | |
0d5cff50 | 21508 | static const char * |
e142c38c | 21509 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 21510 | { |
518817b3 SM |
21511 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21512 | = cu->per_cu->dwarf2_per_objfile; | |
0114d602 DJ |
21513 | struct die_info *parent, *spec_die; |
21514 | struct dwarf2_cu *spec_cu; | |
21515 | struct type *parent_type; | |
a121b7c1 | 21516 | const char *retval; |
63d06c5c | 21517 | |
9c37b5ae | 21518 | if (cu->language != language_cplus |
c44af4eb TT |
21519 | && cu->language != language_fortran && cu->language != language_d |
21520 | && cu->language != language_rust) | |
0114d602 DJ |
21521 | return ""; |
21522 | ||
96408a79 SA |
21523 | retval = anonymous_struct_prefix (die, cu); |
21524 | if (retval) | |
21525 | return retval; | |
21526 | ||
0114d602 DJ |
21527 | /* We have to be careful in the presence of DW_AT_specification. |
21528 | For example, with GCC 3.4, given the code | |
21529 | ||
21530 | namespace N { | |
21531 | void foo() { | |
21532 | // Definition of N::foo. | |
21533 | } | |
21534 | } | |
21535 | ||
21536 | then we'll have a tree of DIEs like this: | |
21537 | ||
21538 | 1: DW_TAG_compile_unit | |
21539 | 2: DW_TAG_namespace // N | |
21540 | 3: DW_TAG_subprogram // declaration of N::foo | |
21541 | 4: DW_TAG_subprogram // definition of N::foo | |
21542 | DW_AT_specification // refers to die #3 | |
21543 | ||
21544 | Thus, when processing die #4, we have to pretend that we're in | |
21545 | the context of its DW_AT_specification, namely the contex of die | |
21546 | #3. */ | |
21547 | spec_cu = cu; | |
21548 | spec_die = die_specification (die, &spec_cu); | |
21549 | if (spec_die == NULL) | |
21550 | parent = die->parent; | |
21551 | else | |
63d06c5c | 21552 | { |
0114d602 DJ |
21553 | parent = spec_die->parent; |
21554 | cu = spec_cu; | |
63d06c5c | 21555 | } |
0114d602 DJ |
21556 | |
21557 | if (parent == NULL) | |
21558 | return ""; | |
98bfdba5 PA |
21559 | else if (parent->building_fullname) |
21560 | { | |
21561 | const char *name; | |
21562 | const char *parent_name; | |
21563 | ||
21564 | /* It has been seen on RealView 2.2 built binaries, | |
21565 | DW_TAG_template_type_param types actually _defined_ as | |
21566 | children of the parent class: | |
21567 | ||
21568 | enum E {}; | |
21569 | template class <class Enum> Class{}; | |
21570 | Class<enum E> class_e; | |
21571 | ||
21572 | 1: DW_TAG_class_type (Class) | |
21573 | 2: DW_TAG_enumeration_type (E) | |
21574 | 3: DW_TAG_enumerator (enum1:0) | |
21575 | 3: DW_TAG_enumerator (enum2:1) | |
21576 | ... | |
21577 | 2: DW_TAG_template_type_param | |
21578 | DW_AT_type DW_FORM_ref_udata (E) | |
21579 | ||
21580 | Besides being broken debug info, it can put GDB into an | |
21581 | infinite loop. Consider: | |
21582 | ||
21583 | When we're building the full name for Class<E>, we'll start | |
21584 | at Class, and go look over its template type parameters, | |
21585 | finding E. We'll then try to build the full name of E, and | |
21586 | reach here. We're now trying to build the full name of E, | |
21587 | and look over the parent DIE for containing scope. In the | |
21588 | broken case, if we followed the parent DIE of E, we'd again | |
21589 | find Class, and once again go look at its template type | |
21590 | arguments, etc., etc. Simply don't consider such parent die | |
21591 | as source-level parent of this die (it can't be, the language | |
21592 | doesn't allow it), and break the loop here. */ | |
21593 | name = dwarf2_name (die, cu); | |
21594 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 21595 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
21596 | name ? name : "<unknown>", |
21597 | parent_name ? parent_name : "<unknown>"); | |
21598 | return ""; | |
21599 | } | |
63d06c5c | 21600 | else |
0114d602 DJ |
21601 | switch (parent->tag) |
21602 | { | |
63d06c5c | 21603 | case DW_TAG_namespace: |
0114d602 | 21604 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
21605 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
21606 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
21607 | Work around this problem here. */ | |
21608 | if (cu->language == language_cplus | |
e86ca25f | 21609 | && strcmp (TYPE_NAME (parent_type), "::") == 0) |
acebe513 | 21610 | return ""; |
0114d602 | 21611 | /* We give a name to even anonymous namespaces. */ |
e86ca25f | 21612 | return TYPE_NAME (parent_type); |
63d06c5c | 21613 | case DW_TAG_class_type: |
680b30c7 | 21614 | case DW_TAG_interface_type: |
63d06c5c | 21615 | case DW_TAG_structure_type: |
0114d602 | 21616 | case DW_TAG_union_type: |
f55ee35c | 21617 | case DW_TAG_module: |
0114d602 | 21618 | parent_type = read_type_die (parent, cu); |
e86ca25f TT |
21619 | if (TYPE_NAME (parent_type) != NULL) |
21620 | return TYPE_NAME (parent_type); | |
0114d602 DJ |
21621 | else |
21622 | /* An anonymous structure is only allowed non-static data | |
21623 | members; no typedefs, no member functions, et cetera. | |
21624 | So it does not need a prefix. */ | |
21625 | return ""; | |
abc72ce4 | 21626 | case DW_TAG_compile_unit: |
95554aad | 21627 | case DW_TAG_partial_unit: |
abc72ce4 DE |
21628 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
21629 | if (cu->language == language_cplus | |
fd5866f6 | 21630 | && !dwarf2_per_objfile->types.empty () |
abc72ce4 DE |
21631 | && die->child != NULL |
21632 | && (die->tag == DW_TAG_class_type | |
21633 | || die->tag == DW_TAG_structure_type | |
21634 | || die->tag == DW_TAG_union_type)) | |
21635 | { | |
43816ebc | 21636 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
21637 | if (name != NULL) |
21638 | return name; | |
21639 | } | |
21640 | return ""; | |
0a4b0913 AB |
21641 | case DW_TAG_subprogram: |
21642 | /* Nested subroutines in Fortran get a prefix with the name | |
21643 | of the parent's subroutine. */ | |
21644 | if (cu->language == language_fortran) | |
21645 | { | |
21646 | if ((die->tag == DW_TAG_subprogram) | |
21647 | && (dwarf2_name (parent, cu) != NULL)) | |
21648 | return dwarf2_name (parent, cu); | |
21649 | } | |
21650 | return determine_prefix (parent, cu); | |
3d567982 TT |
21651 | case DW_TAG_enumeration_type: |
21652 | parent_type = read_type_die (parent, cu); | |
21653 | if (TYPE_DECLARED_CLASS (parent_type)) | |
21654 | { | |
e86ca25f TT |
21655 | if (TYPE_NAME (parent_type) != NULL) |
21656 | return TYPE_NAME (parent_type); | |
3d567982 TT |
21657 | return ""; |
21658 | } | |
21659 | /* Fall through. */ | |
63d06c5c | 21660 | default: |
8176b9b8 | 21661 | return determine_prefix (parent, cu); |
63d06c5c | 21662 | } |
63d06c5c DC |
21663 | } |
21664 | ||
3e43a32a MS |
21665 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
21666 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
21667 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
21668 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
21669 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 21670 | |
f55ee35c | 21671 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
21672 | |
21673 | static char * | |
f55ee35c JK |
21674 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
21675 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 21676 | { |
f55ee35c | 21677 | const char *lead = ""; |
5c315b68 | 21678 | const char *sep; |
63d06c5c | 21679 | |
3e43a32a MS |
21680 | if (suffix == NULL || suffix[0] == '\0' |
21681 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 21682 | sep = ""; |
45280282 IB |
21683 | else if (cu->language == language_d) |
21684 | { | |
21685 | /* For D, the 'main' function could be defined in any module, but it | |
21686 | should never be prefixed. */ | |
21687 | if (strcmp (suffix, "D main") == 0) | |
21688 | { | |
21689 | prefix = ""; | |
21690 | sep = ""; | |
21691 | } | |
21692 | else | |
21693 | sep = "."; | |
21694 | } | |
f55ee35c JK |
21695 | else if (cu->language == language_fortran && physname) |
21696 | { | |
21697 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
21698 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
21699 | ||
21700 | lead = "__"; | |
21701 | sep = "_MOD_"; | |
21702 | } | |
987504bb JJ |
21703 | else |
21704 | sep = "::"; | |
63d06c5c | 21705 | |
6dd47d34 DE |
21706 | if (prefix == NULL) |
21707 | prefix = ""; | |
21708 | if (suffix == NULL) | |
21709 | suffix = ""; | |
21710 | ||
987504bb JJ |
21711 | if (obs == NULL) |
21712 | { | |
3e43a32a | 21713 | char *retval |
224c3ddb SM |
21714 | = ((char *) |
21715 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 21716 | |
f55ee35c JK |
21717 | strcpy (retval, lead); |
21718 | strcat (retval, prefix); | |
6dd47d34 DE |
21719 | strcat (retval, sep); |
21720 | strcat (retval, suffix); | |
63d06c5c DC |
21721 | return retval; |
21722 | } | |
987504bb JJ |
21723 | else |
21724 | { | |
21725 | /* We have an obstack. */ | |
f55ee35c | 21726 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 21727 | } |
63d06c5c DC |
21728 | } |
21729 | ||
71c25dea TT |
21730 | /* Get name of a die, return NULL if not found. */ |
21731 | ||
15d034d0 TT |
21732 | static const char * |
21733 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
be1e3d3e | 21734 | struct objfile *objfile) |
71c25dea TT |
21735 | { |
21736 | if (name && cu->language == language_cplus) | |
21737 | { | |
2f408ecb | 21738 | std::string canon_name = cp_canonicalize_string (name); |
71c25dea | 21739 | |
2f408ecb | 21740 | if (!canon_name.empty ()) |
71c25dea | 21741 | { |
2f408ecb | 21742 | if (canon_name != name) |
be1e3d3e | 21743 | name = objfile->intern (canon_name); |
71c25dea TT |
21744 | } |
21745 | } | |
21746 | ||
21747 | return name; | |
c906108c SS |
21748 | } |
21749 | ||
96553a0c DE |
21750 | /* Get name of a die, return NULL if not found. |
21751 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 21752 | |
15d034d0 | 21753 | static const char * |
e142c38c | 21754 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
21755 | { |
21756 | struct attribute *attr; | |
518817b3 | 21757 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
9219021c | 21758 | |
e142c38c | 21759 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 21760 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 21761 | && die->tag != DW_TAG_namespace |
53832f31 TT |
21762 | && die->tag != DW_TAG_class_type |
21763 | && die->tag != DW_TAG_interface_type | |
21764 | && die->tag != DW_TAG_structure_type | |
21765 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
21766 | return NULL; |
21767 | ||
21768 | switch (die->tag) | |
21769 | { | |
21770 | case DW_TAG_compile_unit: | |
95554aad | 21771 | case DW_TAG_partial_unit: |
71c25dea TT |
21772 | /* Compilation units have a DW_AT_name that is a filename, not |
21773 | a source language identifier. */ | |
21774 | case DW_TAG_enumeration_type: | |
21775 | case DW_TAG_enumerator: | |
21776 | /* These tags always have simple identifiers already; no need | |
21777 | to canonicalize them. */ | |
21778 | return DW_STRING (attr); | |
907af001 | 21779 | |
96553a0c DE |
21780 | case DW_TAG_namespace: |
21781 | if (attr != NULL && DW_STRING (attr) != NULL) | |
21782 | return DW_STRING (attr); | |
21783 | return CP_ANONYMOUS_NAMESPACE_STR; | |
21784 | ||
907af001 UW |
21785 | case DW_TAG_class_type: |
21786 | case DW_TAG_interface_type: | |
21787 | case DW_TAG_structure_type: | |
21788 | case DW_TAG_union_type: | |
21789 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
21790 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
21791 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
21792 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 21793 | if (attr && DW_STRING (attr) |
61012eef GB |
21794 | && (startswith (DW_STRING (attr), "._") |
21795 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 21796 | return NULL; |
53832f31 TT |
21797 | |
21798 | /* GCC might emit a nameless typedef that has a linkage name. See | |
21799 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
21800 | if (!attr || DW_STRING (attr) == NULL) | |
21801 | { | |
73b9be8b | 21802 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
21803 | if (attr == NULL || DW_STRING (attr) == NULL) |
21804 | return NULL; | |
21805 | ||
df5c6c50 JK |
21806 | /* Avoid demangling DW_STRING (attr) the second time on a second |
21807 | call for the same DIE. */ | |
21808 | if (!DW_STRING_IS_CANONICAL (attr)) | |
53832f31 | 21809 | { |
43816ebc TT |
21810 | gdb::unique_xmalloc_ptr<char> demangled |
21811 | (gdb_demangle (DW_STRING (attr), DMGL_TYPES)); | |
4f180d53 AT |
21812 | if (demangled == nullptr) |
21813 | return nullptr; | |
43816ebc | 21814 | |
be1e3d3e | 21815 | DW_STRING (attr) = objfile->intern (demangled.get ()); |
53832f31 | 21816 | DW_STRING_IS_CANONICAL (attr) = 1; |
53832f31 | 21817 | } |
67430cd0 TT |
21818 | |
21819 | /* Strip any leading namespaces/classes, keep only the base name. | |
21820 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
21821 | const char *base = strrchr (DW_STRING (attr), ':'); | |
21822 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
21823 | return &base[1]; | |
21824 | else | |
21825 | return DW_STRING (attr); | |
53832f31 | 21826 | } |
907af001 UW |
21827 | break; |
21828 | ||
71c25dea | 21829 | default: |
907af001 UW |
21830 | break; |
21831 | } | |
21832 | ||
21833 | if (!DW_STRING_IS_CANONICAL (attr)) | |
21834 | { | |
be1e3d3e TT |
21835 | DW_STRING (attr) = dwarf2_canonicalize_name (DW_STRING (attr), cu, |
21836 | objfile); | |
907af001 | 21837 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 21838 | } |
907af001 | 21839 | return DW_STRING (attr); |
9219021c DC |
21840 | } |
21841 | ||
21842 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
21843 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
21844 | containing the return value on output. */ | |
9219021c DC |
21845 | |
21846 | static struct die_info * | |
f2f0e013 | 21847 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
21848 | { |
21849 | struct attribute *attr; | |
9219021c | 21850 | |
f2f0e013 | 21851 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
21852 | if (attr == NULL) |
21853 | return NULL; | |
21854 | ||
f2f0e013 | 21855 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
21856 | } |
21857 | ||
f9aca02d | 21858 | static void |
d97bc12b | 21859 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
21860 | { |
21861 | unsigned int i; | |
21862 | ||
d97bc12b | 21863 | print_spaces (indent, f); |
9d8780f0 | 21864 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 21865 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 21866 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
21867 | |
21868 | if (die->parent != NULL) | |
21869 | { | |
21870 | print_spaces (indent, f); | |
9d8780f0 SM |
21871 | fprintf_unfiltered (f, " parent at offset: %s\n", |
21872 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
21873 | } |
21874 | ||
21875 | print_spaces (indent, f); | |
21876 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 21877 | dwarf_bool_name (die->child != NULL)); |
c906108c | 21878 | |
d97bc12b DE |
21879 | print_spaces (indent, f); |
21880 | fprintf_unfiltered (f, " attributes:\n"); | |
21881 | ||
c906108c SS |
21882 | for (i = 0; i < die->num_attrs; ++i) |
21883 | { | |
d97bc12b DE |
21884 | print_spaces (indent, f); |
21885 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
21886 | dwarf_attr_name (die->attrs[i].name), |
21887 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 21888 | |
c906108c SS |
21889 | switch (die->attrs[i].form) |
21890 | { | |
c906108c | 21891 | case DW_FORM_addr: |
336d760d | 21892 | case DW_FORM_addrx: |
3019eac3 | 21893 | case DW_FORM_GNU_addr_index: |
d97bc12b | 21894 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 21895 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
21896 | break; |
21897 | case DW_FORM_block2: | |
21898 | case DW_FORM_block4: | |
21899 | case DW_FORM_block: | |
21900 | case DW_FORM_block1: | |
56eb65bd SP |
21901 | fprintf_unfiltered (f, "block: size %s", |
21902 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 21903 | break; |
2dc7f7b3 | 21904 | case DW_FORM_exprloc: |
56eb65bd SP |
21905 | fprintf_unfiltered (f, "expression: size %s", |
21906 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 21907 | break; |
0224619f JK |
21908 | case DW_FORM_data16: |
21909 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
21910 | break; | |
4568ecf9 DE |
21911 | case DW_FORM_ref_addr: |
21912 | fprintf_unfiltered (f, "ref address: "); | |
21913 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
21914 | break; | |
36586728 TT |
21915 | case DW_FORM_GNU_ref_alt: |
21916 | fprintf_unfiltered (f, "alt ref address: "); | |
21917 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
21918 | break; | |
10b3939b DJ |
21919 | case DW_FORM_ref1: |
21920 | case DW_FORM_ref2: | |
21921 | case DW_FORM_ref4: | |
4568ecf9 DE |
21922 | case DW_FORM_ref8: |
21923 | case DW_FORM_ref_udata: | |
d97bc12b | 21924 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 21925 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 21926 | break; |
c906108c SS |
21927 | case DW_FORM_data1: |
21928 | case DW_FORM_data2: | |
21929 | case DW_FORM_data4: | |
ce5d95e1 | 21930 | case DW_FORM_data8: |
c906108c SS |
21931 | case DW_FORM_udata: |
21932 | case DW_FORM_sdata: | |
43bbcdc2 PH |
21933 | fprintf_unfiltered (f, "constant: %s", |
21934 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 21935 | break; |
2dc7f7b3 TT |
21936 | case DW_FORM_sec_offset: |
21937 | fprintf_unfiltered (f, "section offset: %s", | |
21938 | pulongest (DW_UNSND (&die->attrs[i]))); | |
21939 | break; | |
55f1336d | 21940 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
21941 | fprintf_unfiltered (f, "signature: %s", |
21942 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 21943 | break; |
c906108c | 21944 | case DW_FORM_string: |
4bdf3d34 | 21945 | case DW_FORM_strp: |
43988095 | 21946 | case DW_FORM_line_strp: |
cf532bd1 | 21947 | case DW_FORM_strx: |
3019eac3 | 21948 | case DW_FORM_GNU_str_index: |
36586728 | 21949 | case DW_FORM_GNU_strp_alt: |
8285870a | 21950 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 21951 | DW_STRING (&die->attrs[i]) |
8285870a JK |
21952 | ? DW_STRING (&die->attrs[i]) : "", |
21953 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
21954 | break; |
21955 | case DW_FORM_flag: | |
21956 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 21957 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 21958 | else |
d97bc12b | 21959 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 21960 | break; |
2dc7f7b3 TT |
21961 | case DW_FORM_flag_present: |
21962 | fprintf_unfiltered (f, "flag: TRUE"); | |
21963 | break; | |
a8329558 | 21964 | case DW_FORM_indirect: |
0963b4bd MS |
21965 | /* The reader will have reduced the indirect form to |
21966 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 21967 | fprintf_unfiltered (f, |
3e43a32a | 21968 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 21969 | break; |
663c44ac JK |
21970 | case DW_FORM_implicit_const: |
21971 | fprintf_unfiltered (f, "constant: %s", | |
21972 | plongest (DW_SND (&die->attrs[i]))); | |
21973 | break; | |
c906108c | 21974 | default: |
d97bc12b | 21975 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 21976 | die->attrs[i].form); |
d97bc12b | 21977 | break; |
c906108c | 21978 | } |
d97bc12b | 21979 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
21980 | } |
21981 | } | |
21982 | ||
f9aca02d | 21983 | static void |
d97bc12b | 21984 | dump_die_for_error (struct die_info *die) |
c906108c | 21985 | { |
d97bc12b DE |
21986 | dump_die_shallow (gdb_stderr, 0, die); |
21987 | } | |
21988 | ||
21989 | static void | |
21990 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
21991 | { | |
21992 | int indent = level * 4; | |
21993 | ||
21994 | gdb_assert (die != NULL); | |
21995 | ||
21996 | if (level >= max_level) | |
21997 | return; | |
21998 | ||
21999 | dump_die_shallow (f, indent, die); | |
22000 | ||
22001 | if (die->child != NULL) | |
c906108c | 22002 | { |
d97bc12b DE |
22003 | print_spaces (indent, f); |
22004 | fprintf_unfiltered (f, " Children:"); | |
22005 | if (level + 1 < max_level) | |
22006 | { | |
22007 | fprintf_unfiltered (f, "\n"); | |
22008 | dump_die_1 (f, level + 1, max_level, die->child); | |
22009 | } | |
22010 | else | |
22011 | { | |
3e43a32a MS |
22012 | fprintf_unfiltered (f, |
22013 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
22014 | } |
22015 | } | |
22016 | ||
22017 | if (die->sibling != NULL && level > 0) | |
22018 | { | |
22019 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
22020 | } |
22021 | } | |
22022 | ||
d97bc12b DE |
22023 | /* This is called from the pdie macro in gdbinit.in. |
22024 | It's not static so gcc will keep a copy callable from gdb. */ | |
22025 | ||
22026 | void | |
22027 | dump_die (struct die_info *die, int max_level) | |
22028 | { | |
22029 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
22030 | } | |
22031 | ||
f9aca02d | 22032 | static void |
51545339 | 22033 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22034 | { |
51545339 | 22035 | void **slot; |
c906108c | 22036 | |
9c541725 PA |
22037 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
22038 | to_underlying (die->sect_off), | |
b64f50a1 | 22039 | INSERT); |
51545339 DJ |
22040 | |
22041 | *slot = die; | |
c906108c SS |
22042 | } |
22043 | ||
348e048f DE |
22044 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
22045 | On entry *REF_CU is the CU of SRC_DIE. | |
22046 | On exit *REF_CU is the CU of the result. */ | |
22047 | ||
22048 | static struct die_info * | |
ff39bb5e | 22049 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
22050 | struct dwarf2_cu **ref_cu) |
22051 | { | |
22052 | struct die_info *die; | |
22053 | ||
cd6c91b4 | 22054 | if (attr->form_is_ref ()) |
348e048f | 22055 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 22056 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
22057 | die = follow_die_sig (src_die, attr, ref_cu); |
22058 | else | |
22059 | { | |
22060 | dump_die_for_error (src_die); | |
22061 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
518817b3 | 22062 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
348e048f DE |
22063 | } |
22064 | ||
22065 | return die; | |
03dd20cc DJ |
22066 | } |
22067 | ||
5c631832 | 22068 | /* Follow reference OFFSET. |
673bfd45 DE |
22069 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
22070 | On exit *REF_CU is the CU of the result. | |
22071 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 22072 | |
f9aca02d | 22073 | static struct die_info * |
9c541725 | 22074 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 22075 | struct dwarf2_cu **ref_cu) |
c906108c | 22076 | { |
10b3939b | 22077 | struct die_info temp_die; |
f2f0e013 | 22078 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
518817b3 SM |
22079 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22080 | = cu->per_cu->dwarf2_per_objfile; | |
10b3939b | 22081 | |
348e048f DE |
22082 | gdb_assert (cu->per_cu != NULL); |
22083 | ||
98bfdba5 PA |
22084 | target_cu = cu; |
22085 | ||
3019eac3 | 22086 | if (cu->per_cu->is_debug_types) |
348e048f DE |
22087 | { |
22088 | /* .debug_types CUs cannot reference anything outside their CU. | |
22089 | If they need to, they have to reference a signatured type via | |
55f1336d | 22090 | DW_FORM_ref_sig8. */ |
4057dfde | 22091 | if (!cu->header.offset_in_cu_p (sect_off)) |
5c631832 | 22092 | return NULL; |
348e048f | 22093 | } |
36586728 | 22094 | else if (offset_in_dwz != cu->per_cu->is_dwz |
4057dfde | 22095 | || !cu->header.offset_in_cu_p (sect_off)) |
10b3939b DJ |
22096 | { |
22097 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 22098 | |
9c541725 | 22099 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 22100 | dwarf2_per_objfile); |
03dd20cc DJ |
22101 | |
22102 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad | 22103 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 22104 | load_full_comp_unit (per_cu, false, cu->language); |
03dd20cc | 22105 | |
10b3939b DJ |
22106 | target_cu = per_cu->cu; |
22107 | } | |
98bfdba5 PA |
22108 | else if (cu->dies == NULL) |
22109 | { | |
22110 | /* We're loading full DIEs during partial symbol reading. */ | |
22111 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
58f0c718 | 22112 | load_full_comp_unit (cu->per_cu, false, language_minimal); |
98bfdba5 | 22113 | } |
c906108c | 22114 | |
f2f0e013 | 22115 | *ref_cu = target_cu; |
9c541725 | 22116 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
22117 | |
22118 | if (target_cu != cu) | |
22119 | target_cu->ancestor = cu; | |
22120 | ||
9a3c8263 | 22121 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
22122 | &temp_die, |
22123 | to_underlying (sect_off)); | |
5c631832 | 22124 | } |
10b3939b | 22125 | |
5c631832 JK |
22126 | /* Follow reference attribute ATTR of SRC_DIE. |
22127 | On entry *REF_CU is the CU of SRC_DIE. | |
22128 | On exit *REF_CU is the CU of the result. */ | |
22129 | ||
22130 | static struct die_info * | |
ff39bb5e | 22131 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
22132 | struct dwarf2_cu **ref_cu) |
22133 | { | |
0826b30a | 22134 | sect_offset sect_off = attr->get_ref_die_offset (); |
5c631832 JK |
22135 | struct dwarf2_cu *cu = *ref_cu; |
22136 | struct die_info *die; | |
22137 | ||
9c541725 | 22138 | die = follow_die_offset (sect_off, |
36586728 TT |
22139 | (attr->form == DW_FORM_GNU_ref_alt |
22140 | || cu->per_cu->is_dwz), | |
22141 | ref_cu); | |
5c631832 | 22142 | if (!die) |
9d8780f0 SM |
22143 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
22144 | "at %s [in module %s]"), | |
22145 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
518817b3 | 22146 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
348e048f | 22147 | |
5c631832 JK |
22148 | return die; |
22149 | } | |
22150 | ||
d4c9a4f8 | 22151 | /* See read.h. */ |
5c631832 JK |
22152 | |
22153 | struct dwarf2_locexpr_baton | |
9c541725 | 22154 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
d4c9a4f8 | 22155 | dwarf2_per_cu_data *per_cu, |
8b9737bf | 22156 | CORE_ADDR (*get_frame_pc) (void *baton), |
e4a62c65 | 22157 | void *baton, bool resolve_abstract_p) |
5c631832 | 22158 | { |
918dd910 | 22159 | struct dwarf2_cu *cu; |
5c631832 JK |
22160 | struct die_info *die; |
22161 | struct attribute *attr; | |
22162 | struct dwarf2_locexpr_baton retval; | |
12359b5e SM |
22163 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
22164 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8cf6f0b1 | 22165 | |
918dd910 | 22166 | if (per_cu->cu == NULL) |
58f0c718 | 22167 | load_cu (per_cu, false); |
918dd910 | 22168 | cu = per_cu->cu; |
cc12ce38 DE |
22169 | if (cu == NULL) |
22170 | { | |
22171 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22172 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
22173 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
22174 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 22175 | } |
918dd910 | 22176 | |
9c541725 | 22177 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 22178 | if (!die) |
9d8780f0 SM |
22179 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
22180 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
22181 | |
22182 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 22183 | if (!attr && resolve_abstract_p |
3360b6e7 | 22184 | && (dwarf2_per_objfile->abstract_to_concrete.find (die->sect_off) |
e4a62c65 TV |
22185 | != dwarf2_per_objfile->abstract_to_concrete.end ())) |
22186 | { | |
22187 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
b3b3bada | 22188 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
08feed99 | 22189 | struct gdbarch *gdbarch = objfile->arch (); |
e4a62c65 | 22190 | |
3360b6e7 TV |
22191 | for (const auto &cand_off |
22192 | : dwarf2_per_objfile->abstract_to_concrete[die->sect_off]) | |
e4a62c65 | 22193 | { |
3360b6e7 TV |
22194 | struct dwarf2_cu *cand_cu = cu; |
22195 | struct die_info *cand | |
22196 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
22197 | if (!cand | |
22198 | || !cand->parent | |
e4a62c65 TV |
22199 | || cand->parent->tag != DW_TAG_subprogram) |
22200 | continue; | |
22201 | ||
22202 | CORE_ADDR pc_low, pc_high; | |
22203 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
22204 | if (pc_low == ((CORE_ADDR) -1)) |
22205 | continue; | |
22206 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
22207 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
22208 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
22209 | continue; |
22210 | ||
22211 | die = cand; | |
22212 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
22213 | break; | |
22214 | } | |
22215 | } | |
22216 | ||
5c631832 JK |
22217 | if (!attr) |
22218 | { | |
e103e986 JK |
22219 | /* DWARF: "If there is no such attribute, then there is no effect.". |
22220 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 22221 | |
e103e986 | 22222 | retval.data = NULL; |
5c631832 JK |
22223 | retval.size = 0; |
22224 | } | |
cd6c91b4 | 22225 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
22226 | { |
22227 | struct dwarf2_loclist_baton loclist_baton; | |
22228 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
22229 | size_t size; | |
22230 | ||
22231 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
22232 | ||
22233 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
22234 | &size, pc); | |
22235 | retval.size = size; | |
22236 | } | |
5c631832 JK |
22237 | else |
22238 | { | |
4fc6c0d5 | 22239 | if (!attr->form_is_block ()) |
9d8780f0 | 22240 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 22241 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 22242 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
22243 | |
22244 | retval.data = DW_BLOCK (attr)->data; | |
22245 | retval.size = DW_BLOCK (attr)->size; | |
22246 | } | |
22247 | retval.per_cu = cu->per_cu; | |
918dd910 | 22248 | |
ed2dc618 | 22249 | age_cached_comp_units (dwarf2_per_objfile); |
918dd910 | 22250 | |
5c631832 | 22251 | return retval; |
348e048f DE |
22252 | } |
22253 | ||
d4c9a4f8 | 22254 | /* See read.h. */ |
8b9737bf TT |
22255 | |
22256 | struct dwarf2_locexpr_baton | |
22257 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
d4c9a4f8 | 22258 | dwarf2_per_cu_data *per_cu, |
8b9737bf TT |
22259 | CORE_ADDR (*get_frame_pc) (void *baton), |
22260 | void *baton) | |
22261 | { | |
9c541725 | 22262 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 22263 | |
9c541725 | 22264 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, get_frame_pc, baton); |
8b9737bf TT |
22265 | } |
22266 | ||
b6807d98 TT |
22267 | /* Write a constant of a given type as target-ordered bytes into |
22268 | OBSTACK. */ | |
22269 | ||
22270 | static const gdb_byte * | |
22271 | write_constant_as_bytes (struct obstack *obstack, | |
22272 | enum bfd_endian byte_order, | |
22273 | struct type *type, | |
22274 | ULONGEST value, | |
22275 | LONGEST *len) | |
22276 | { | |
22277 | gdb_byte *result; | |
22278 | ||
22279 | *len = TYPE_LENGTH (type); | |
224c3ddb | 22280 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
22281 | store_unsigned_integer (result, *len, byte_order, value); |
22282 | ||
22283 | return result; | |
22284 | } | |
22285 | ||
d4c9a4f8 | 22286 | /* See read.h. */ |
b6807d98 TT |
22287 | |
22288 | const gdb_byte * | |
9c541725 | 22289 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
d4c9a4f8 SM |
22290 | dwarf2_per_cu_data *per_cu, |
22291 | obstack *obstack, | |
b6807d98 TT |
22292 | LONGEST *len) |
22293 | { | |
22294 | struct dwarf2_cu *cu; | |
22295 | struct die_info *die; | |
22296 | struct attribute *attr; | |
22297 | const gdb_byte *result = NULL; | |
22298 | struct type *type; | |
22299 | LONGEST value; | |
22300 | enum bfd_endian byte_order; | |
e3b94546 | 22301 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
b6807d98 | 22302 | |
b6807d98 | 22303 | if (per_cu->cu == NULL) |
58f0c718 | 22304 | load_cu (per_cu, false); |
b6807d98 | 22305 | cu = per_cu->cu; |
cc12ce38 DE |
22306 | if (cu == NULL) |
22307 | { | |
22308 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22309 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
22310 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
22311 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 22312 | } |
b6807d98 | 22313 | |
9c541725 | 22314 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 22315 | if (!die) |
9d8780f0 SM |
22316 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
22317 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
22318 | |
22319 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
22320 | if (attr == NULL) | |
22321 | return NULL; | |
22322 | ||
e3b94546 | 22323 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
22324 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
22325 | ||
22326 | switch (attr->form) | |
22327 | { | |
22328 | case DW_FORM_addr: | |
336d760d | 22329 | case DW_FORM_addrx: |
b6807d98 TT |
22330 | case DW_FORM_GNU_addr_index: |
22331 | { | |
22332 | gdb_byte *tem; | |
22333 | ||
22334 | *len = cu->header.addr_size; | |
224c3ddb | 22335 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
22336 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
22337 | result = tem; | |
22338 | } | |
22339 | break; | |
22340 | case DW_FORM_string: | |
22341 | case DW_FORM_strp: | |
cf532bd1 | 22342 | case DW_FORM_strx: |
b6807d98 TT |
22343 | case DW_FORM_GNU_str_index: |
22344 | case DW_FORM_GNU_strp_alt: | |
22345 | /* DW_STRING is already allocated on the objfile obstack, point | |
22346 | directly to it. */ | |
22347 | result = (const gdb_byte *) DW_STRING (attr); | |
22348 | *len = strlen (DW_STRING (attr)); | |
22349 | break; | |
22350 | case DW_FORM_block1: | |
22351 | case DW_FORM_block2: | |
22352 | case DW_FORM_block4: | |
22353 | case DW_FORM_block: | |
22354 | case DW_FORM_exprloc: | |
0224619f | 22355 | case DW_FORM_data16: |
b6807d98 TT |
22356 | result = DW_BLOCK (attr)->data; |
22357 | *len = DW_BLOCK (attr)->size; | |
22358 | break; | |
22359 | ||
22360 | /* The DW_AT_const_value attributes are supposed to carry the | |
22361 | symbol's value "represented as it would be on the target | |
22362 | architecture." By the time we get here, it's already been | |
22363 | converted to host endianness, so we just need to sign- or | |
22364 | zero-extend it as appropriate. */ | |
22365 | case DW_FORM_data1: | |
22366 | type = die_type (die, cu); | |
22367 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
22368 | if (result == NULL) | |
22369 | result = write_constant_as_bytes (obstack, byte_order, | |
22370 | type, value, len); | |
22371 | break; | |
22372 | case DW_FORM_data2: | |
22373 | type = die_type (die, cu); | |
22374 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
22375 | if (result == NULL) | |
22376 | result = write_constant_as_bytes (obstack, byte_order, | |
22377 | type, value, len); | |
22378 | break; | |
22379 | case DW_FORM_data4: | |
22380 | type = die_type (die, cu); | |
22381 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
22382 | if (result == NULL) | |
22383 | result = write_constant_as_bytes (obstack, byte_order, | |
22384 | type, value, len); | |
22385 | break; | |
22386 | case DW_FORM_data8: | |
22387 | type = die_type (die, cu); | |
22388 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
22389 | if (result == NULL) | |
22390 | result = write_constant_as_bytes (obstack, byte_order, | |
22391 | type, value, len); | |
22392 | break; | |
22393 | ||
22394 | case DW_FORM_sdata: | |
663c44ac | 22395 | case DW_FORM_implicit_const: |
b6807d98 TT |
22396 | type = die_type (die, cu); |
22397 | result = write_constant_as_bytes (obstack, byte_order, | |
22398 | type, DW_SND (attr), len); | |
22399 | break; | |
22400 | ||
22401 | case DW_FORM_udata: | |
22402 | type = die_type (die, cu); | |
22403 | result = write_constant_as_bytes (obstack, byte_order, | |
22404 | type, DW_UNSND (attr), len); | |
22405 | break; | |
22406 | ||
22407 | default: | |
b98664d3 | 22408 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
22409 | dwarf_form_name (attr->form)); |
22410 | break; | |
22411 | } | |
22412 | ||
22413 | return result; | |
22414 | } | |
22415 | ||
d4c9a4f8 | 22416 | /* See read.h. */ |
7942e96e AA |
22417 | |
22418 | struct type * | |
9c541725 | 22419 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
d4c9a4f8 | 22420 | dwarf2_per_cu_data *per_cu) |
7942e96e AA |
22421 | { |
22422 | struct dwarf2_cu *cu; | |
22423 | struct die_info *die; | |
22424 | ||
7942e96e | 22425 | if (per_cu->cu == NULL) |
58f0c718 | 22426 | load_cu (per_cu, false); |
7942e96e AA |
22427 | cu = per_cu->cu; |
22428 | if (!cu) | |
22429 | return NULL; | |
22430 | ||
9c541725 | 22431 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
22432 | if (!die) |
22433 | return NULL; | |
22434 | ||
22435 | return die_type (die, cu); | |
22436 | } | |
22437 | ||
8cb5117c | 22438 | /* See read.h. */ |
8a9b8146 TT |
22439 | |
22440 | struct type * | |
b64f50a1 | 22441 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
22442 | struct dwarf2_per_cu_data *per_cu) |
22443 | { | |
9c541725 | 22444 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
b64f50a1 | 22445 | return get_die_type_at_offset (die_offset_sect, per_cu); |
8a9b8146 TT |
22446 | } |
22447 | ||
ac9ec31b | 22448 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 22449 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
22450 | On exit *REF_CU is the CU of the result. |
22451 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
22452 | |
22453 | static struct die_info * | |
ac9ec31b DE |
22454 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
22455 | struct dwarf2_cu **ref_cu) | |
348e048f | 22456 | { |
348e048f | 22457 | struct die_info temp_die; |
c24bdb02 | 22458 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f DE |
22459 | struct die_info *die; |
22460 | ||
ac9ec31b DE |
22461 | /* While it might be nice to assert sig_type->type == NULL here, |
22462 | we can get here for DW_AT_imported_declaration where we need | |
22463 | the DIE not the type. */ | |
348e048f DE |
22464 | |
22465 | /* If necessary, add it to the queue and load its DIEs. */ | |
22466 | ||
95554aad | 22467 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 22468 | read_signatured_type (sig_type); |
348e048f | 22469 | |
348e048f | 22470 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 22471 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
22472 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
22473 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 22474 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 22475 | to_underlying (temp_die.sect_off)); |
348e048f DE |
22476 | if (die) |
22477 | { | |
ed2dc618 | 22478 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 22479 | = (*ref_cu)->per_cu->dwarf2_per_objfile; |
ed2dc618 | 22480 | |
796a7ff8 DE |
22481 | /* For .gdb_index version 7 keep track of included TUs. |
22482 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
22483 | if (dwarf2_per_objfile->index_table != NULL | |
22484 | && dwarf2_per_objfile->index_table->version <= 7) | |
22485 | { | |
ae640021 | 22486 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
22487 | } |
22488 | ||
348e048f | 22489 | *ref_cu = sig_cu; |
c24bdb02 KS |
22490 | if (sig_cu != cu) |
22491 | sig_cu->ancestor = cu; | |
22492 | ||
348e048f DE |
22493 | return die; |
22494 | } | |
22495 | ||
ac9ec31b DE |
22496 | return NULL; |
22497 | } | |
22498 | ||
22499 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
22500 | On entry *REF_CU is the CU of SRC_DIE. | |
22501 | On exit *REF_CU is the CU of the result. | |
22502 | The result is the DIE of the type. | |
22503 | If the referenced type cannot be found an error is thrown. */ | |
22504 | ||
22505 | static struct die_info * | |
ff39bb5e | 22506 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
22507 | struct dwarf2_cu **ref_cu) |
22508 | { | |
22509 | ULONGEST signature = DW_SIGNATURE (attr); | |
22510 | struct signatured_type *sig_type; | |
22511 | struct die_info *die; | |
22512 | ||
22513 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
22514 | ||
a2ce51a0 | 22515 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
22516 | /* sig_type will be NULL if the signatured type is missing from |
22517 | the debug info. */ | |
22518 | if (sig_type == NULL) | |
22519 | { | |
22520 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
22521 | " from DIE at %s [in module %s]"), |
22522 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 22523 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22524 | } |
22525 | ||
22526 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
22527 | if (die == NULL) | |
22528 | { | |
22529 | dump_die_for_error (src_die); | |
22530 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
22531 | " from DIE at %s [in module %s]"), |
22532 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 22533 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22534 | } |
22535 | ||
22536 | return die; | |
22537 | } | |
22538 | ||
22539 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
22540 | reading in and processing the type unit if necessary. */ | |
22541 | ||
22542 | static struct type * | |
22543 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
22544 | struct dwarf2_cu *cu) | |
22545 | { | |
518817b3 SM |
22546 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22547 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
22548 | struct signatured_type *sig_type; |
22549 | struct dwarf2_cu *type_cu; | |
22550 | struct die_info *type_die; | |
22551 | struct type *type; | |
22552 | ||
a2ce51a0 | 22553 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
22554 | /* sig_type will be NULL if the signatured type is missing from |
22555 | the debug info. */ | |
22556 | if (sig_type == NULL) | |
22557 | { | |
b98664d3 | 22558 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
22559 | " from DIE at %s [in module %s]"), |
22560 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22561 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22562 | return build_error_marker_type (cu, die); |
22563 | } | |
22564 | ||
22565 | /* If we already know the type we're done. */ | |
22566 | if (sig_type->type != NULL) | |
22567 | return sig_type->type; | |
22568 | ||
22569 | type_cu = cu; | |
22570 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
22571 | if (type_die != NULL) | |
22572 | { | |
22573 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
22574 | is created. This is important, for example, because for c++ classes | |
22575 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
22576 | type = read_type_die (type_die, type_cu); | |
22577 | if (type == NULL) | |
22578 | { | |
b98664d3 | 22579 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
22580 | " referenced from DIE at %s [in module %s]"), |
22581 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22582 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22583 | type = build_error_marker_type (cu, die); |
22584 | } | |
22585 | } | |
22586 | else | |
22587 | { | |
b98664d3 | 22588 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
22589 | " from DIE at %s [in module %s]"), |
22590 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22591 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22592 | type = build_error_marker_type (cu, die); |
22593 | } | |
22594 | sig_type->type = type; | |
22595 | ||
22596 | return type; | |
22597 | } | |
22598 | ||
22599 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
22600 | reading in and processing the type unit if necessary. */ | |
22601 | ||
22602 | static struct type * | |
ff39bb5e | 22603 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 22604 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
22605 | { |
22606 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 22607 | if (attr->form_is_ref ()) |
ac9ec31b DE |
22608 | { |
22609 | struct dwarf2_cu *type_cu = cu; | |
22610 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
22611 | ||
22612 | return read_type_die (type_die, type_cu); | |
22613 | } | |
22614 | else if (attr->form == DW_FORM_ref_sig8) | |
22615 | { | |
22616 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
22617 | } | |
22618 | else | |
22619 | { | |
518817b3 SM |
22620 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22621 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 22622 | |
b98664d3 | 22623 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
22624 | " at %s [in module %s]"), |
22625 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
4262abfb | 22626 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22627 | return build_error_marker_type (cu, die); |
22628 | } | |
348e048f DE |
22629 | } |
22630 | ||
e5fe5e75 | 22631 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
22632 | |
22633 | static void | |
e5fe5e75 | 22634 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 22635 | { |
52dc124a | 22636 | struct signatured_type *sig_type; |
348e048f | 22637 | |
f4dc4d17 | 22638 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
197400e8 | 22639 | gdb_assert (! per_cu->type_unit_group_p ()); |
f4dc4d17 | 22640 | |
6721b2ec DE |
22641 | /* We have the per_cu, but we need the signatured_type. |
22642 | Fortunately this is an easy translation. */ | |
22643 | gdb_assert (per_cu->is_debug_types); | |
22644 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 22645 | |
6721b2ec | 22646 | gdb_assert (per_cu->cu == NULL); |
348e048f | 22647 | |
52dc124a | 22648 | read_signatured_type (sig_type); |
348e048f | 22649 | |
6721b2ec | 22650 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
22651 | } |
22652 | ||
3019eac3 DE |
22653 | /* Read in a signatured type and build its CU and DIEs. |
22654 | If the type is a stub for the real type in a DWO file, | |
22655 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
22656 | |
22657 | static void | |
22658 | read_signatured_type (struct signatured_type *sig_type) | |
22659 | { | |
22660 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 22661 | |
3019eac3 | 22662 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 22663 | gdb_assert (per_cu->cu == NULL); |
348e048f | 22664 | |
6751ebae | 22665 | cutu_reader reader (per_cu, NULL, 0, false); |
c0ab21c2 TT |
22666 | |
22667 | if (!reader.dummy_p) | |
22668 | { | |
22669 | struct dwarf2_cu *cu = reader.cu; | |
22670 | const gdb_byte *info_ptr = reader.info_ptr; | |
22671 | ||
22672 | gdb_assert (cu->die_hash == NULL); | |
22673 | cu->die_hash = | |
22674 | htab_create_alloc_ex (cu->header.length / 12, | |
22675 | die_hash, | |
22676 | die_eq, | |
22677 | NULL, | |
22678 | &cu->comp_unit_obstack, | |
22679 | hashtab_obstack_allocate, | |
22680 | dummy_obstack_deallocate); | |
22681 | ||
3e225074 | 22682 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
22683 | reader.comp_unit_die->child |
22684 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
22685 | reader.comp_unit_die); | |
22686 | cu->dies = reader.comp_unit_die; | |
22687 | /* comp_unit_die is not stored in die_hash, no need. */ | |
22688 | ||
22689 | /* We try not to read any attributes in this function, because | |
22690 | not all CUs needed for references have been loaded yet, and | |
22691 | symbol table processing isn't initialized. But we have to | |
22692 | set the CU language, or we won't be able to build types | |
22693 | correctly. Similarly, if we do not read the producer, we can | |
22694 | not apply producer-specific interpretation. */ | |
22695 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
6751ebae TT |
22696 | |
22697 | reader.keep (); | |
c0ab21c2 TT |
22698 | } |
22699 | ||
7ee85ab1 | 22700 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
22701 | } |
22702 | ||
c906108c SS |
22703 | /* Decode simple location descriptions. |
22704 | Given a pointer to a dwarf block that defines a location, compute | |
7d79de9a TT |
22705 | the location and return the value. If COMPUTED is non-null, it is |
22706 | set to true to indicate that decoding was successful, and false | |
22707 | otherwise. If COMPUTED is null, then this function may emit a | |
22708 | complaint. */ | |
c906108c SS |
22709 | |
22710 | static CORE_ADDR | |
7d79de9a | 22711 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu, bool *computed) |
c906108c | 22712 | { |
518817b3 | 22713 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
56eb65bd SP |
22714 | size_t i; |
22715 | size_t size = blk->size; | |
d521ce57 | 22716 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
22717 | CORE_ADDR stack[64]; |
22718 | int stacki; | |
22719 | unsigned int bytes_read, unsnd; | |
22720 | gdb_byte op; | |
c906108c | 22721 | |
7d79de9a TT |
22722 | if (computed != nullptr) |
22723 | *computed = false; | |
22724 | ||
21ae7a4d JK |
22725 | i = 0; |
22726 | stacki = 0; | |
22727 | stack[stacki] = 0; | |
22728 | stack[++stacki] = 0; | |
22729 | ||
22730 | while (i < size) | |
22731 | { | |
22732 | op = data[i++]; | |
22733 | switch (op) | |
22734 | { | |
22735 | case DW_OP_lit0: | |
22736 | case DW_OP_lit1: | |
22737 | case DW_OP_lit2: | |
22738 | case DW_OP_lit3: | |
22739 | case DW_OP_lit4: | |
22740 | case DW_OP_lit5: | |
22741 | case DW_OP_lit6: | |
22742 | case DW_OP_lit7: | |
22743 | case DW_OP_lit8: | |
22744 | case DW_OP_lit9: | |
22745 | case DW_OP_lit10: | |
22746 | case DW_OP_lit11: | |
22747 | case DW_OP_lit12: | |
22748 | case DW_OP_lit13: | |
22749 | case DW_OP_lit14: | |
22750 | case DW_OP_lit15: | |
22751 | case DW_OP_lit16: | |
22752 | case DW_OP_lit17: | |
22753 | case DW_OP_lit18: | |
22754 | case DW_OP_lit19: | |
22755 | case DW_OP_lit20: | |
22756 | case DW_OP_lit21: | |
22757 | case DW_OP_lit22: | |
22758 | case DW_OP_lit23: | |
22759 | case DW_OP_lit24: | |
22760 | case DW_OP_lit25: | |
22761 | case DW_OP_lit26: | |
22762 | case DW_OP_lit27: | |
22763 | case DW_OP_lit28: | |
22764 | case DW_OP_lit29: | |
22765 | case DW_OP_lit30: | |
22766 | case DW_OP_lit31: | |
22767 | stack[++stacki] = op - DW_OP_lit0; | |
22768 | break; | |
f1bea926 | 22769 | |
21ae7a4d JK |
22770 | case DW_OP_reg0: |
22771 | case DW_OP_reg1: | |
22772 | case DW_OP_reg2: | |
22773 | case DW_OP_reg3: | |
22774 | case DW_OP_reg4: | |
22775 | case DW_OP_reg5: | |
22776 | case DW_OP_reg6: | |
22777 | case DW_OP_reg7: | |
22778 | case DW_OP_reg8: | |
22779 | case DW_OP_reg9: | |
22780 | case DW_OP_reg10: | |
22781 | case DW_OP_reg11: | |
22782 | case DW_OP_reg12: | |
22783 | case DW_OP_reg13: | |
22784 | case DW_OP_reg14: | |
22785 | case DW_OP_reg15: | |
22786 | case DW_OP_reg16: | |
22787 | case DW_OP_reg17: | |
22788 | case DW_OP_reg18: | |
22789 | case DW_OP_reg19: | |
22790 | case DW_OP_reg20: | |
22791 | case DW_OP_reg21: | |
22792 | case DW_OP_reg22: | |
22793 | case DW_OP_reg23: | |
22794 | case DW_OP_reg24: | |
22795 | case DW_OP_reg25: | |
22796 | case DW_OP_reg26: | |
22797 | case DW_OP_reg27: | |
22798 | case DW_OP_reg28: | |
22799 | case DW_OP_reg29: | |
22800 | case DW_OP_reg30: | |
22801 | case DW_OP_reg31: | |
22802 | stack[++stacki] = op - DW_OP_reg0; | |
22803 | if (i < size) | |
7d79de9a TT |
22804 | { |
22805 | if (computed == nullptr) | |
22806 | dwarf2_complex_location_expr_complaint (); | |
22807 | else | |
22808 | return 0; | |
22809 | } | |
21ae7a4d | 22810 | break; |
c906108c | 22811 | |
21ae7a4d JK |
22812 | case DW_OP_regx: |
22813 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
22814 | i += bytes_read; | |
22815 | stack[++stacki] = unsnd; | |
22816 | if (i < size) | |
7d79de9a TT |
22817 | { |
22818 | if (computed == nullptr) | |
22819 | dwarf2_complex_location_expr_complaint (); | |
22820 | else | |
22821 | return 0; | |
22822 | } | |
21ae7a4d | 22823 | break; |
c906108c | 22824 | |
21ae7a4d | 22825 | case DW_OP_addr: |
c8a7a66f TT |
22826 | stack[++stacki] = cu->header.read_address (objfile->obfd, &data[i], |
22827 | &bytes_read); | |
21ae7a4d JK |
22828 | i += bytes_read; |
22829 | break; | |
d53d4ac5 | 22830 | |
21ae7a4d JK |
22831 | case DW_OP_const1u: |
22832 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
22833 | i += 1; | |
22834 | break; | |
22835 | ||
22836 | case DW_OP_const1s: | |
22837 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
22838 | i += 1; | |
22839 | break; | |
22840 | ||
22841 | case DW_OP_const2u: | |
22842 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
22843 | i += 2; | |
22844 | break; | |
22845 | ||
22846 | case DW_OP_const2s: | |
22847 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
22848 | i += 2; | |
22849 | break; | |
d53d4ac5 | 22850 | |
21ae7a4d JK |
22851 | case DW_OP_const4u: |
22852 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
22853 | i += 4; | |
22854 | break; | |
22855 | ||
22856 | case DW_OP_const4s: | |
22857 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
22858 | i += 4; | |
22859 | break; | |
22860 | ||
585861ea JK |
22861 | case DW_OP_const8u: |
22862 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
22863 | i += 8; | |
22864 | break; | |
22865 | ||
21ae7a4d JK |
22866 | case DW_OP_constu: |
22867 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
22868 | &bytes_read); | |
22869 | i += bytes_read; | |
22870 | break; | |
22871 | ||
22872 | case DW_OP_consts: | |
22873 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
22874 | i += bytes_read; | |
22875 | break; | |
22876 | ||
22877 | case DW_OP_dup: | |
22878 | stack[stacki + 1] = stack[stacki]; | |
22879 | stacki++; | |
22880 | break; | |
22881 | ||
22882 | case DW_OP_plus: | |
22883 | stack[stacki - 1] += stack[stacki]; | |
22884 | stacki--; | |
22885 | break; | |
22886 | ||
22887 | case DW_OP_plus_uconst: | |
22888 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
22889 | &bytes_read); | |
22890 | i += bytes_read; | |
22891 | break; | |
22892 | ||
22893 | case DW_OP_minus: | |
22894 | stack[stacki - 1] -= stack[stacki]; | |
22895 | stacki--; | |
22896 | break; | |
22897 | ||
22898 | case DW_OP_deref: | |
22899 | /* If we're not the last op, then we definitely can't encode | |
22900 | this using GDB's address_class enum. This is valid for partial | |
22901 | global symbols, although the variable's address will be bogus | |
22902 | in the psymtab. */ | |
22903 | if (i < size) | |
7d79de9a TT |
22904 | { |
22905 | if (computed == nullptr) | |
22906 | dwarf2_complex_location_expr_complaint (); | |
22907 | else | |
22908 | return 0; | |
22909 | } | |
21ae7a4d JK |
22910 | break; |
22911 | ||
22912 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 22913 | case DW_OP_form_tls_address: |
21ae7a4d JK |
22914 | /* The top of the stack has the offset from the beginning |
22915 | of the thread control block at which the variable is located. */ | |
22916 | /* Nothing should follow this operator, so the top of stack would | |
22917 | be returned. */ | |
22918 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
22919 | address will be bogus in the psymtab. Make it always at least |
22920 | non-zero to not look as a variable garbage collected by linker | |
22921 | which have DW_OP_addr 0. */ | |
21ae7a4d | 22922 | if (i < size) |
7d79de9a TT |
22923 | { |
22924 | if (computed == nullptr) | |
22925 | dwarf2_complex_location_expr_complaint (); | |
22926 | else | |
22927 | return 0; | |
22928 | } | |
585861ea | 22929 | stack[stacki]++; |
21ae7a4d JK |
22930 | break; |
22931 | ||
22932 | case DW_OP_GNU_uninit: | |
7d79de9a TT |
22933 | if (computed != nullptr) |
22934 | return 0; | |
21ae7a4d JK |
22935 | break; |
22936 | ||
336d760d | 22937 | case DW_OP_addrx: |
3019eac3 | 22938 | case DW_OP_GNU_addr_index: |
49f6c839 | 22939 | case DW_OP_GNU_const_index: |
3019eac3 DE |
22940 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
22941 | &bytes_read); | |
22942 | i += bytes_read; | |
22943 | break; | |
22944 | ||
21ae7a4d | 22945 | default: |
7d79de9a TT |
22946 | if (computed == nullptr) |
22947 | { | |
22948 | const char *name = get_DW_OP_name (op); | |
21ae7a4d | 22949 | |
7d79de9a TT |
22950 | if (name) |
22951 | complaint (_("unsupported stack op: '%s'"), | |
22952 | name); | |
22953 | else | |
22954 | complaint (_("unsupported stack op: '%02x'"), | |
22955 | op); | |
22956 | } | |
21ae7a4d JK |
22957 | |
22958 | return (stack[stacki]); | |
d53d4ac5 | 22959 | } |
3c6e0cb3 | 22960 | |
21ae7a4d JK |
22961 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
22962 | outside of the allocated space. Also enforce minimum>0. */ | |
22963 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
22964 | { | |
7d79de9a TT |
22965 | if (computed == nullptr) |
22966 | complaint (_("location description stack overflow")); | |
21ae7a4d JK |
22967 | return 0; |
22968 | } | |
22969 | ||
22970 | if (stacki <= 0) | |
22971 | { | |
7d79de9a TT |
22972 | if (computed == nullptr) |
22973 | complaint (_("location description stack underflow")); | |
21ae7a4d JK |
22974 | return 0; |
22975 | } | |
22976 | } | |
7d79de9a TT |
22977 | |
22978 | if (computed != nullptr) | |
22979 | *computed = true; | |
21ae7a4d | 22980 | return (stack[stacki]); |
c906108c SS |
22981 | } |
22982 | ||
22983 | /* memory allocation interface */ | |
22984 | ||
c906108c | 22985 | static struct dwarf_block * |
7b5a2f43 | 22986 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 22987 | { |
8d749320 | 22988 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
22989 | } |
22990 | ||
c906108c | 22991 | static struct die_info * |
b60c80d6 | 22992 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
22993 | { |
22994 | struct die_info *die; | |
b60c80d6 DJ |
22995 | size_t size = sizeof (struct die_info); |
22996 | ||
22997 | if (num_attrs > 1) | |
22998 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 22999 | |
b60c80d6 | 23000 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
23001 | memset (die, 0, sizeof (struct die_info)); |
23002 | return (die); | |
23003 | } | |
2e276125 JB |
23004 | |
23005 | \f | |
a036ba48 | 23006 | |
c90ec28a | 23007 | /* Macro support. */ |
cf2c3c16 | 23008 | |
9eac9650 TT |
23009 | /* An overload of dwarf_decode_macros that finds the correct section |
23010 | and ensures it is read in before calling the other overload. */ | |
23011 | ||
23012 | static void | |
23013 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, | |
23014 | int section_is_gnu) | |
23015 | { | |
23016 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
23017 | = cu->per_cu->dwarf2_per_objfile; | |
23018 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5a0e026f | 23019 | const struct line_header *lh = cu->line_header; |
9eac9650 TT |
23020 | unsigned int offset_size = cu->header.offset_size; |
23021 | struct dwarf2_section_info *section; | |
23022 | const char *section_name; | |
23023 | ||
23024 | if (cu->dwo_unit != nullptr) | |
23025 | { | |
23026 | if (section_is_gnu) | |
23027 | { | |
23028 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
23029 | section_name = ".debug_macro.dwo"; | |
23030 | } | |
23031 | else | |
23032 | { | |
23033 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
23034 | section_name = ".debug_macinfo.dwo"; | |
23035 | } | |
23036 | } | |
23037 | else | |
23038 | { | |
23039 | if (section_is_gnu) | |
23040 | { | |
23041 | section = &dwarf2_per_objfile->macro; | |
23042 | section_name = ".debug_macro"; | |
23043 | } | |
23044 | else | |
23045 | { | |
23046 | section = &dwarf2_per_objfile->macinfo; | |
23047 | section_name = ".debug_macinfo"; | |
23048 | } | |
23049 | } | |
23050 | ||
23051 | section->read (objfile); | |
23052 | if (section->buffer == nullptr) | |
23053 | { | |
23054 | complaint (_("missing %s section"), section_name); | |
23055 | return; | |
23056 | } | |
23057 | ||
23058 | buildsym_compunit *builder = cu->get_builder (); | |
23059 | ||
23060 | dwarf_decode_macros (dwarf2_per_objfile, builder, section, lh, | |
23061 | offset_size, offset, section_is_gnu); | |
23062 | } | |
23063 | ||
3019eac3 DE |
23064 | /* Return the .debug_loc section to use for CU. |
23065 | For DWO files use .debug_loc.dwo. */ | |
23066 | ||
23067 | static struct dwarf2_section_info * | |
23068 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
23069 | { | |
518817b3 SM |
23070 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23071 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 23072 | |
3019eac3 | 23073 | if (cu->dwo_unit) |
43988095 JK |
23074 | { |
23075 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 23076 | |
43988095 JK |
23077 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
23078 | } | |
23079 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->loclists | |
23080 | : &dwarf2_per_objfile->loc); | |
3019eac3 DE |
23081 | } |
23082 | ||
8cf6f0b1 TT |
23083 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
23084 | ||
23085 | static void | |
23086 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
23087 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 23088 | const struct attribute *attr) |
8cf6f0b1 | 23089 | { |
518817b3 SM |
23090 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23091 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 DE |
23092 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
23093 | ||
96b79293 | 23094 | section->read (dwarf2_per_objfile->objfile); |
8cf6f0b1 TT |
23095 | |
23096 | baton->per_cu = cu->per_cu; | |
23097 | gdb_assert (baton->per_cu); | |
23098 | /* We don't know how long the location list is, but make sure we | |
23099 | don't run off the edge of the section. */ | |
3019eac3 DE |
23100 | baton->size = section->size - DW_UNSND (attr); |
23101 | baton->data = section->buffer + DW_UNSND (attr); | |
2b24b6e4 TT |
23102 | if (cu->base_address.has_value ()) |
23103 | baton->base_address = *cu->base_address; | |
23104 | else | |
23105 | baton->base_address = 0; | |
f664829e | 23106 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
23107 | } |
23108 | ||
4c2df51b | 23109 | static void |
ff39bb5e | 23110 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 23111 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 23112 | { |
518817b3 SM |
23113 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23114 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 23115 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 23116 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 23117 | |
cd6c91b4 | 23118 | if (attr->form_is_section_offset () |
3019eac3 | 23119 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
23120 | the section. If so, fall through to the complaint in the |
23121 | other branch. */ | |
2c7d5afc | 23122 | && DW_UNSND (attr) < section->get_size (objfile)) |
4c2df51b | 23123 | { |
0d53c4c4 | 23124 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 23125 | |
8d749320 | 23126 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 23127 | |
8cf6f0b1 | 23128 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 23129 | |
2b24b6e4 | 23130 | if (!cu->base_address.has_value ()) |
b98664d3 | 23131 | complaint (_("Location list used without " |
3e43a32a | 23132 | "specifying the CU base address.")); |
4c2df51b | 23133 | |
f1e6e072 TT |
23134 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
23135 | ? dwarf2_loclist_block_index | |
23136 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
23137 | SYMBOL_LOCATION_BATON (sym) = baton; |
23138 | } | |
23139 | else | |
23140 | { | |
23141 | struct dwarf2_locexpr_baton *baton; | |
23142 | ||
8d749320 | 23143 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
ae0d2f24 UW |
23144 | baton->per_cu = cu->per_cu; |
23145 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 23146 | |
4fc6c0d5 | 23147 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
23148 | { |
23149 | /* Note that we're just copying the block's data pointer | |
23150 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
23151 | info_buffer for SYM's objfile; right now we never release |
23152 | that buffer, but when we do clean up properly this may | |
23153 | need to change. */ | |
0d53c4c4 DJ |
23154 | baton->size = DW_BLOCK (attr)->size; |
23155 | baton->data = DW_BLOCK (attr)->data; | |
23156 | } | |
23157 | else | |
23158 | { | |
23159 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 23160 | sym->natural_name ()); |
0d53c4c4 | 23161 | baton->size = 0; |
0d53c4c4 | 23162 | } |
6e70227d | 23163 | |
f1e6e072 TT |
23164 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
23165 | ? dwarf2_locexpr_block_index | |
23166 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
23167 | SYMBOL_LOCATION_BATON (sym) = baton; |
23168 | } | |
4c2df51b | 23169 | } |
6502dd73 | 23170 | |
09ba997f | 23171 | /* See read.h. */ |
ae0d2f24 UW |
23172 | |
23173 | struct objfile * | |
09ba997f | 23174 | dwarf2_per_cu_data::objfile () const |
ae0d2f24 | 23175 | { |
09ba997f | 23176 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
ae0d2f24 UW |
23177 | |
23178 | /* Return the master objfile, so that we can report and look up the | |
23179 | correct file containing this variable. */ | |
23180 | if (objfile->separate_debug_objfile_backlink) | |
23181 | objfile = objfile->separate_debug_objfile_backlink; | |
23182 | ||
23183 | return objfile; | |
23184 | } | |
23185 | ||
96408a79 SA |
23186 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
23187 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
23188 | CU_HEADERP first. */ | |
23189 | ||
23190 | static const struct comp_unit_head * | |
23191 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
09ba997f | 23192 | const struct dwarf2_per_cu_data *per_cu) |
96408a79 | 23193 | { |
d521ce57 | 23194 | const gdb_byte *info_ptr; |
96408a79 SA |
23195 | |
23196 | if (per_cu->cu) | |
23197 | return &per_cu->cu->header; | |
23198 | ||
9c541725 | 23199 | info_ptr = per_cu->section->buffer + to_underlying (per_cu->sect_off); |
96408a79 SA |
23200 | |
23201 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
23202 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
23203 | rcuh_kind::COMPILE); | |
96408a79 SA |
23204 | |
23205 | return cu_headerp; | |
23206 | } | |
23207 | ||
09ba997f | 23208 | /* See read.h. */ |
ae0d2f24 | 23209 | |
98714339 | 23210 | int |
09ba997f | 23211 | dwarf2_per_cu_data::addr_size () const |
ae0d2f24 | 23212 | { |
96408a79 SA |
23213 | struct comp_unit_head cu_header_local; |
23214 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 23215 | |
09ba997f | 23216 | cu_headerp = per_cu_header_read_in (&cu_header_local, this); |
96408a79 SA |
23217 | |
23218 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
23219 | } |
23220 | ||
09ba997f | 23221 | /* See read.h. */ |
9eae7c52 TT |
23222 | |
23223 | int | |
09ba997f | 23224 | dwarf2_per_cu_data::offset_size () const |
9eae7c52 | 23225 | { |
96408a79 SA |
23226 | struct comp_unit_head cu_header_local; |
23227 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 23228 | |
09ba997f | 23229 | cu_headerp = per_cu_header_read_in (&cu_header_local, this); |
96408a79 SA |
23230 | |
23231 | return cu_headerp->offset_size; | |
23232 | } | |
23233 | ||
09ba997f | 23234 | /* See read.h. */ |
96408a79 SA |
23235 | |
23236 | int | |
09ba997f | 23237 | dwarf2_per_cu_data::ref_addr_size () const |
96408a79 SA |
23238 | { |
23239 | struct comp_unit_head cu_header_local; | |
23240 | const struct comp_unit_head *cu_headerp; | |
23241 | ||
09ba997f | 23242 | cu_headerp = per_cu_header_read_in (&cu_header_local, this); |
96408a79 SA |
23243 | |
23244 | if (cu_headerp->version == 2) | |
23245 | return cu_headerp->addr_size; | |
23246 | else | |
23247 | return cu_headerp->offset_size; | |
181cebd4 JK |
23248 | } |
23249 | ||
09ba997f | 23250 | /* See read.h. */ |
9aa1f1e3 TT |
23251 | |
23252 | CORE_ADDR | |
09ba997f | 23253 | dwarf2_per_cu_data::text_offset () const |
9aa1f1e3 | 23254 | { |
09ba997f TT |
23255 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
23256 | ||
23257 | return objfile->text_section_offset (); | |
9aa1f1e3 TT |
23258 | } |
23259 | ||
09ba997f TT |
23260 | /* See read.h. */ |
23261 | ||
23262 | struct type * | |
23263 | dwarf2_per_cu_data::addr_type () const | |
9a49df9d | 23264 | { |
09ba997f | 23265 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
9a49df9d AB |
23266 | struct type *void_type = objfile_type (objfile)->builtin_void; |
23267 | struct type *addr_type = lookup_pointer_type (void_type); | |
09ba997f | 23268 | int addr_size = this->addr_size (); |
9a49df9d AB |
23269 | |
23270 | if (TYPE_LENGTH (addr_type) == addr_size) | |
23271 | return addr_type; | |
23272 | ||
09ba997f | 23273 | addr_type = addr_sized_int_type (TYPE_UNSIGNED (addr_type)); |
9a49df9d AB |
23274 | return addr_type; |
23275 | } | |
23276 | ||
22b6cd70 TT |
23277 | /* A helper function for dwarf2_find_containing_comp_unit that returns |
23278 | the index of the result, and that searches a vector. It will | |
23279 | return a result even if the offset in question does not actually | |
23280 | occur in any CU. This is separate so that it can be unit | |
23281 | tested. */ | |
ae038cb0 | 23282 | |
22b6cd70 TT |
23283 | static int |
23284 | dwarf2_find_containing_comp_unit | |
23285 | (sect_offset sect_off, | |
23286 | unsigned int offset_in_dwz, | |
23287 | const std::vector<dwarf2_per_cu_data *> &all_comp_units) | |
ae038cb0 | 23288 | { |
ae038cb0 DJ |
23289 | int low, high; |
23290 | ||
ae038cb0 | 23291 | low = 0; |
22b6cd70 | 23292 | high = all_comp_units.size () - 1; |
ae038cb0 DJ |
23293 | while (high > low) |
23294 | { | |
36586728 | 23295 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 23296 | int mid = low + (high - low) / 2; |
9a619af0 | 23297 | |
22b6cd70 | 23298 | mid_cu = all_comp_units[mid]; |
36586728 | 23299 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 23300 | || (mid_cu->is_dwz == offset_in_dwz |
22b6cd70 | 23301 | && mid_cu->sect_off + mid_cu->length > sect_off)) |
ae038cb0 DJ |
23302 | high = mid; |
23303 | else | |
23304 | low = mid + 1; | |
23305 | } | |
23306 | gdb_assert (low == high); | |
22b6cd70 TT |
23307 | return low; |
23308 | } | |
23309 | ||
23310 | /* Locate the .debug_info compilation unit from CU's objfile which contains | |
23311 | the DIE at OFFSET. Raises an error on failure. */ | |
23312 | ||
23313 | static struct dwarf2_per_cu_data * | |
23314 | dwarf2_find_containing_comp_unit (sect_offset sect_off, | |
23315 | unsigned int offset_in_dwz, | |
23316 | struct dwarf2_per_objfile *dwarf2_per_objfile) | |
23317 | { | |
23318 | int low | |
23319 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
23320 | dwarf2_per_objfile->all_comp_units); | |
23321 | struct dwarf2_per_cu_data *this_cu | |
23322 | = dwarf2_per_objfile->all_comp_units[low]; | |
23323 | ||
45b8ae0c | 23324 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 23325 | { |
36586728 | 23326 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 23327 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
23328 | "offset %s [in module %s]"), |
23329 | sect_offset_str (sect_off), | |
ed2dc618 | 23330 | bfd_get_filename (dwarf2_per_objfile->objfile->obfd)); |
10b3939b | 23331 | |
9c541725 PA |
23332 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->sect_off |
23333 | <= sect_off); | |
ae038cb0 DJ |
23334 | return dwarf2_per_objfile->all_comp_units[low-1]; |
23335 | } | |
23336 | else | |
23337 | { | |
b76e467d | 23338 | if (low == dwarf2_per_objfile->all_comp_units.size () - 1 |
9c541725 | 23339 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 23340 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 23341 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
23342 | return this_cu; |
23343 | } | |
23344 | } | |
23345 | ||
22b6cd70 TT |
23346 | #if GDB_SELF_TEST |
23347 | ||
23348 | namespace selftests { | |
23349 | namespace find_containing_comp_unit { | |
23350 | ||
23351 | static void | |
23352 | run_test () | |
23353 | { | |
23354 | struct dwarf2_per_cu_data one {}; | |
23355 | struct dwarf2_per_cu_data two {}; | |
23356 | struct dwarf2_per_cu_data three {}; | |
23357 | struct dwarf2_per_cu_data four {}; | |
23358 | ||
23359 | one.length = 5; | |
23360 | two.sect_off = sect_offset (one.length); | |
23361 | two.length = 7; | |
23362 | ||
23363 | three.length = 5; | |
23364 | three.is_dwz = 1; | |
23365 | four.sect_off = sect_offset (three.length); | |
23366 | four.length = 7; | |
23367 | four.is_dwz = 1; | |
23368 | ||
23369 | std::vector<dwarf2_per_cu_data *> units; | |
23370 | units.push_back (&one); | |
23371 | units.push_back (&two); | |
23372 | units.push_back (&three); | |
23373 | units.push_back (&four); | |
23374 | ||
23375 | int result; | |
23376 | ||
23377 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 0, units); | |
23378 | SELF_CHECK (units[result] == &one); | |
23379 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 0, units); | |
23380 | SELF_CHECK (units[result] == &one); | |
23381 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 0, units); | |
23382 | SELF_CHECK (units[result] == &two); | |
23383 | ||
23384 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 1, units); | |
23385 | SELF_CHECK (units[result] == &three); | |
23386 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 1, units); | |
23387 | SELF_CHECK (units[result] == &three); | |
23388 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 1, units); | |
23389 | SELF_CHECK (units[result] == &four); | |
23390 | } | |
23391 | ||
23392 | } | |
23393 | } | |
23394 | ||
23395 | #endif /* GDB_SELF_TEST */ | |
23396 | ||
23745b47 | 23397 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 23398 | |
fcd3b13d SM |
23399 | dwarf2_cu::dwarf2_cu (struct dwarf2_per_cu_data *per_cu_) |
23400 | : per_cu (per_cu_), | |
9068261f AB |
23401 | mark (false), |
23402 | has_loclist (false), | |
23403 | checked_producer (false), | |
23404 | producer_is_gxx_lt_4_6 (false), | |
23405 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 23406 | producer_is_icc (false), |
9068261f | 23407 | producer_is_icc_lt_14 (false), |
c258c396 | 23408 | producer_is_codewarrior (false), |
9068261f | 23409 | processing_has_namespace_info (false) |
93311388 | 23410 | { |
fcd3b13d SM |
23411 | per_cu->cu = this; |
23412 | } | |
23413 | ||
23414 | /* Destroy a dwarf2_cu. */ | |
23415 | ||
23416 | dwarf2_cu::~dwarf2_cu () | |
23417 | { | |
23418 | per_cu->cu = NULL; | |
9816fde3 JK |
23419 | } |
23420 | ||
23421 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
23422 | ||
23423 | static void | |
95554aad TT |
23424 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
23425 | enum language pretend_language) | |
9816fde3 JK |
23426 | { |
23427 | struct attribute *attr; | |
23428 | ||
23429 | /* Set the language we're debugging. */ | |
23430 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 23431 | if (attr != nullptr) |
9816fde3 JK |
23432 | set_cu_language (DW_UNSND (attr), cu); |
23433 | else | |
9cded63f | 23434 | { |
95554aad | 23435 | cu->language = pretend_language; |
9cded63f TT |
23436 | cu->language_defn = language_def (cu->language); |
23437 | } | |
dee91e82 | 23438 | |
7d45c7c3 | 23439 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
23440 | } |
23441 | ||
ae038cb0 DJ |
23442 | /* Increase the age counter on each cached compilation unit, and free |
23443 | any that are too old. */ | |
23444 | ||
23445 | static void | |
ed2dc618 | 23446 | age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
23447 | { |
23448 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
23449 | ||
23450 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
23451 | per_cu = dwarf2_per_objfile->read_in_chain; | |
23452 | while (per_cu != NULL) | |
23453 | { | |
23454 | per_cu->cu->last_used ++; | |
b4f54984 | 23455 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
23456 | dwarf2_mark (per_cu->cu); |
23457 | per_cu = per_cu->cu->read_in_chain; | |
23458 | } | |
23459 | ||
23460 | per_cu = dwarf2_per_objfile->read_in_chain; | |
23461 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
23462 | while (per_cu != NULL) | |
23463 | { | |
23464 | struct dwarf2_per_cu_data *next_cu; | |
23465 | ||
23466 | next_cu = per_cu->cu->read_in_chain; | |
23467 | ||
23468 | if (!per_cu->cu->mark) | |
23469 | { | |
fcd3b13d | 23470 | delete per_cu->cu; |
ae038cb0 DJ |
23471 | *last_chain = next_cu; |
23472 | } | |
23473 | else | |
23474 | last_chain = &per_cu->cu->read_in_chain; | |
23475 | ||
23476 | per_cu = next_cu; | |
23477 | } | |
23478 | } | |
23479 | ||
23480 | /* Remove a single compilation unit from the cache. */ | |
23481 | ||
23482 | static void | |
dee91e82 | 23483 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
23484 | { |
23485 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
ed2dc618 SM |
23486 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23487 | = target_per_cu->dwarf2_per_objfile; | |
ae038cb0 DJ |
23488 | |
23489 | per_cu = dwarf2_per_objfile->read_in_chain; | |
23490 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
23491 | while (per_cu != NULL) | |
23492 | { | |
23493 | struct dwarf2_per_cu_data *next_cu; | |
23494 | ||
23495 | next_cu = per_cu->cu->read_in_chain; | |
23496 | ||
dee91e82 | 23497 | if (per_cu == target_per_cu) |
ae038cb0 | 23498 | { |
fcd3b13d | 23499 | delete per_cu->cu; |
dee91e82 | 23500 | per_cu->cu = NULL; |
ae038cb0 DJ |
23501 | *last_chain = next_cu; |
23502 | break; | |
23503 | } | |
23504 | else | |
23505 | last_chain = &per_cu->cu->read_in_chain; | |
23506 | ||
23507 | per_cu = next_cu; | |
23508 | } | |
23509 | } | |
23510 | ||
dee91e82 DE |
23511 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
23512 | We store these in a hash table separate from the DIEs, and preserve them | |
23513 | when the DIEs are flushed out of cache. | |
23514 | ||
23515 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 23516 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
23517 | or the type may come from a DWO file. Furthermore, while it's more logical |
23518 | to use per_cu->section+offset, with Fission the section with the data is in | |
23519 | the DWO file but we don't know that section at the point we need it. | |
23520 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
23521 | because we can enter the lookup routine, get_die_type_at_offset, from | |
23522 | outside this file, and thus won't necessarily have PER_CU->cu. | |
23523 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 23524 | |
dee91e82 | 23525 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 23526 | { |
dee91e82 | 23527 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 23528 | sect_offset sect_off; |
1c379e20 DJ |
23529 | struct type *type; |
23530 | }; | |
23531 | ||
dee91e82 | 23532 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
23533 | |
23534 | static hashval_t | |
dee91e82 | 23535 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 23536 | { |
9a3c8263 SM |
23537 | const struct dwarf2_per_cu_offset_and_type *ofs |
23538 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 23539 | |
9c541725 | 23540 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
23541 | } |
23542 | ||
dee91e82 | 23543 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
23544 | |
23545 | static int | |
dee91e82 | 23546 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 23547 | { |
9a3c8263 SM |
23548 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
23549 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
23550 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
23551 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 23552 | |
dee91e82 | 23553 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 23554 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
23555 | } |
23556 | ||
23557 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
23558 | table if necessary. For convenience, return TYPE. |
23559 | ||
23560 | The DIEs reading must have careful ordering to: | |
85102364 | 23561 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
23562 | reading current DIE. |
23563 | * Not trying to dereference contents of still incompletely read in types | |
23564 | while reading in other DIEs. | |
23565 | * Enable referencing still incompletely read in types just by a pointer to | |
23566 | the type without accessing its fields. | |
23567 | ||
23568 | Therefore caller should follow these rules: | |
23569 | * Try to fetch any prerequisite types we may need to build this DIE type | |
23570 | before building the type and calling set_die_type. | |
e71ec853 | 23571 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
23572 | possible before fetching more types to complete the current type. |
23573 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 23574 | |
f792889a | 23575 | static struct type * |
1c379e20 DJ |
23576 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
23577 | { | |
518817b3 SM |
23578 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23579 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 23580 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
ed2dc618 | 23581 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3cdcd0ce JB |
23582 | struct attribute *attr; |
23583 | struct dynamic_prop prop; | |
1c379e20 | 23584 | |
b4ba55a1 JB |
23585 | /* For Ada types, make sure that the gnat-specific data is always |
23586 | initialized (if not already set). There are a few types where | |
23587 | we should not be doing so, because the type-specific area is | |
23588 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
23589 | where the type-specific area is used to store the floatformat). | |
23590 | But this is not a problem, because the gnat-specific information | |
23591 | is actually not needed for these types. */ | |
23592 | if (need_gnat_info (cu) | |
23593 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
23594 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
23595 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
23596 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
23597 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
23598 | && !HAVE_GNAT_AUX_INFO (type)) |
23599 | INIT_GNAT_SPECIFIC (type); | |
23600 | ||
3f2f83dd KB |
23601 | /* Read DW_AT_allocated and set in type. */ |
23602 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
4fc6c0d5 | 23603 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 23604 | { |
09ba997f | 23605 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
9a49df9d | 23606 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
50a82047 | 23607 | add_dyn_prop (DYN_PROP_ALLOCATED, prop, type); |
3f2f83dd KB |
23608 | } |
23609 | else if (attr != NULL) | |
23610 | { | |
b98664d3 | 23611 | complaint (_("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 23612 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 23613 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
23614 | } |
23615 | ||
23616 | /* Read DW_AT_associated and set in type. */ | |
23617 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
4fc6c0d5 | 23618 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 23619 | { |
09ba997f | 23620 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
9a49df9d | 23621 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
50a82047 | 23622 | add_dyn_prop (DYN_PROP_ASSOCIATED, prop, type); |
3f2f83dd KB |
23623 | } |
23624 | else if (attr != NULL) | |
23625 | { | |
b98664d3 | 23626 | complaint (_("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 23627 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 23628 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
23629 | } |
23630 | ||
3cdcd0ce JB |
23631 | /* Read DW_AT_data_location and set in type. */ |
23632 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
9a49df9d | 23633 | if (attr_to_dynamic_prop (attr, die, cu, &prop, |
09ba997f | 23634 | cu->per_cu->addr_type ())) |
50a82047 | 23635 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type); |
3cdcd0ce | 23636 | |
dee91e82 | 23637 | if (dwarf2_per_objfile->die_type_hash == NULL) |
0335378b TT |
23638 | dwarf2_per_objfile->die_type_hash |
23639 | = htab_up (htab_create_alloc (127, | |
23640 | per_cu_offset_and_type_hash, | |
23641 | per_cu_offset_and_type_eq, | |
23642 | NULL, xcalloc, xfree)); | |
1c379e20 | 23643 | |
dee91e82 | 23644 | ofs.per_cu = cu->per_cu; |
9c541725 | 23645 | ofs.sect_off = die->sect_off; |
1c379e20 | 23646 | ofs.type = type; |
dee91e82 | 23647 | slot = (struct dwarf2_per_cu_offset_and_type **) |
0335378b | 23648 | htab_find_slot (dwarf2_per_objfile->die_type_hash.get (), &ofs, INSERT); |
7e314c57 | 23649 | if (*slot) |
b98664d3 | 23650 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 23651 | sect_offset_str (die->sect_off)); |
8d749320 SM |
23652 | *slot = XOBNEW (&objfile->objfile_obstack, |
23653 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 23654 | **slot = ofs; |
f792889a | 23655 | return type; |
1c379e20 DJ |
23656 | } |
23657 | ||
9c541725 | 23658 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 23659 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
23660 | |
23661 | static struct type * | |
9c541725 | 23662 | get_die_type_at_offset (sect_offset sect_off, |
673bfd45 | 23663 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 23664 | { |
dee91e82 | 23665 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
ed2dc618 | 23666 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
f792889a | 23667 | |
dee91e82 | 23668 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 23669 | return NULL; |
1c379e20 | 23670 | |
dee91e82 | 23671 | ofs.per_cu = per_cu; |
9c541725 | 23672 | ofs.sect_off = sect_off; |
9a3c8263 | 23673 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
0335378b | 23674 | htab_find (dwarf2_per_objfile->die_type_hash.get (), &ofs)); |
1c379e20 DJ |
23675 | if (slot) |
23676 | return slot->type; | |
23677 | else | |
23678 | return NULL; | |
23679 | } | |
23680 | ||
02142a6c | 23681 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
23682 | or return NULL if DIE does not have a saved type. */ |
23683 | ||
23684 | static struct type * | |
23685 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
23686 | { | |
9c541725 | 23687 | return get_die_type_at_offset (die->sect_off, cu->per_cu); |
673bfd45 DE |
23688 | } |
23689 | ||
10b3939b DJ |
23690 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
23691 | ||
23692 | static void | |
23693 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
23694 | struct dwarf2_per_cu_data *ref_per_cu) | |
23695 | { | |
23696 | void **slot; | |
23697 | ||
23698 | if (cu->dependencies == NULL) | |
23699 | cu->dependencies | |
23700 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
23701 | NULL, &cu->comp_unit_obstack, | |
23702 | hashtab_obstack_allocate, | |
23703 | dummy_obstack_deallocate); | |
23704 | ||
23705 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
23706 | if (*slot == NULL) | |
23707 | *slot = ref_per_cu; | |
23708 | } | |
1c379e20 | 23709 | |
f504f079 DE |
23710 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
23711 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
23712 | cache that we must keep because we are keeping CU. */ |
23713 | ||
10b3939b DJ |
23714 | static int |
23715 | dwarf2_mark_helper (void **slot, void *data) | |
23716 | { | |
23717 | struct dwarf2_per_cu_data *per_cu; | |
23718 | ||
23719 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
23720 | |
23721 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
23722 | reading of the chain. As such dependencies remain valid it is not much | |
23723 | useful to track and undo them during QUIT cleanups. */ | |
23724 | if (per_cu->cu == NULL) | |
23725 | return 1; | |
23726 | ||
10b3939b DJ |
23727 | if (per_cu->cu->mark) |
23728 | return 1; | |
9068261f | 23729 | per_cu->cu->mark = true; |
10b3939b DJ |
23730 | |
23731 | if (per_cu->cu->dependencies != NULL) | |
23732 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
23733 | ||
23734 | return 1; | |
23735 | } | |
23736 | ||
f504f079 DE |
23737 | /* Set the mark field in CU and in every other compilation unit in the |
23738 | cache that we must keep because we are keeping CU. */ | |
23739 | ||
ae038cb0 DJ |
23740 | static void |
23741 | dwarf2_mark (struct dwarf2_cu *cu) | |
23742 | { | |
23743 | if (cu->mark) | |
23744 | return; | |
9068261f | 23745 | cu->mark = true; |
10b3939b DJ |
23746 | if (cu->dependencies != NULL) |
23747 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
23748 | } |
23749 | ||
23750 | static void | |
23751 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
23752 | { | |
23753 | while (per_cu) | |
23754 | { | |
9068261f | 23755 | per_cu->cu->mark = false; |
ae038cb0 DJ |
23756 | per_cu = per_cu->cu->read_in_chain; |
23757 | } | |
72bf9492 DJ |
23758 | } |
23759 | ||
72bf9492 DJ |
23760 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
23761 | is its offset in .debug_info for this objfile. */ | |
23762 | ||
23763 | static hashval_t | |
23764 | partial_die_hash (const void *item) | |
23765 | { | |
9a3c8263 SM |
23766 | const struct partial_die_info *part_die |
23767 | = (const struct partial_die_info *) item; | |
9a619af0 | 23768 | |
9c541725 | 23769 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
23770 | } |
23771 | ||
23772 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
23773 | are equal if they have the same offset. */ | |
23774 | ||
23775 | static int | |
23776 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
23777 | { | |
9a3c8263 SM |
23778 | const struct partial_die_info *part_die_lhs |
23779 | = (const struct partial_die_info *) item_lhs; | |
23780 | const struct partial_die_info *part_die_rhs | |
23781 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 23782 | |
9c541725 | 23783 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
23784 | } |
23785 | ||
3c3bb058 AB |
23786 | struct cmd_list_element *set_dwarf_cmdlist; |
23787 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 | 23788 | |
9291a0cd | 23789 | static void |
cd4fb1b2 SM |
23790 | show_check_physname (struct ui_file *file, int from_tty, |
23791 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 23792 | { |
cd4fb1b2 SM |
23793 | fprintf_filtered (file, |
23794 | _("Whether to check \"physname\" is %s.\n"), | |
23795 | value); | |
9291a0cd TT |
23796 | } |
23797 | ||
6c265988 | 23798 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 23799 | void |
6c265988 | 23800 | _initialize_dwarf2_read () |
9291a0cd | 23801 | { |
0743fc83 | 23802 | add_basic_prefix_cmd ("dwarf", class_maintenance, _("\ |
cd4fb1b2 | 23803 | Set DWARF specific variables.\n\ |
590042fc | 23804 | Configure DWARF variables such as the cache size."), |
0743fc83 TT |
23805 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
23806 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 23807 | |
0743fc83 | 23808 | add_show_prefix_cmd ("dwarf", class_maintenance, _("\ |
590042fc PW |
23809 | Show DWARF specific variables.\n\ |
23810 | Show DWARF variables such as the cache size."), | |
0743fc83 TT |
23811 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
23812 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 23813 | |
cd4fb1b2 SM |
23814 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
23815 | &dwarf_max_cache_age, _("\ | |
23816 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
23817 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
23818 | A higher limit means that cached compilation units will be stored\n\ | |
23819 | in memory longer, and more total memory will be used. Zero disables\n\ | |
23820 | caching, which can slow down startup."), | |
23821 | NULL, | |
23822 | show_dwarf_max_cache_age, | |
23823 | &set_dwarf_cmdlist, | |
23824 | &show_dwarf_cmdlist); | |
156942c7 | 23825 | |
cd4fb1b2 SM |
23826 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
23827 | Set debugging of the DWARF reader."), _("\ | |
23828 | Show debugging of the DWARF reader."), _("\ | |
23829 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
23830 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
23831 | information. A value greater than 1 provides more verbose information."), | |
23832 | NULL, | |
23833 | NULL, | |
23834 | &setdebuglist, &showdebuglist); | |
9291a0cd | 23835 | |
cd4fb1b2 SM |
23836 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
23837 | Set debugging of the DWARF DIE reader."), _("\ | |
23838 | Show debugging of the DWARF DIE reader."), _("\ | |
23839 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
23840 | The value is the maximum depth to print."), | |
23841 | NULL, | |
23842 | NULL, | |
23843 | &setdebuglist, &showdebuglist); | |
9291a0cd | 23844 | |
cd4fb1b2 SM |
23845 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
23846 | Set debugging of the dwarf line reader."), _("\ | |
23847 | Show debugging of the dwarf line reader."), _("\ | |
23848 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
23849 | A value of 1 (one) provides basic information.\n\ | |
23850 | A value greater than 1 provides more verbose information."), | |
23851 | NULL, | |
23852 | NULL, | |
23853 | &setdebuglist, &showdebuglist); | |
437afbb8 | 23854 | |
cd4fb1b2 SM |
23855 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
23856 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
23857 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
23858 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
23859 | the demangler."), | |
23860 | NULL, show_check_physname, | |
23861 | &setdebuglist, &showdebuglist); | |
900e11f9 | 23862 | |
e615022a DE |
23863 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
23864 | no_class, &use_deprecated_index_sections, _("\ | |
23865 | Set whether to use deprecated gdb_index sections."), _("\ | |
23866 | Show whether to use deprecated gdb_index sections."), _("\ | |
23867 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
23868 | Normally they are ignored either because of a missing feature or\n\ | |
23869 | performance issue.\n\ | |
23870 | Warning: This option must be enabled before gdb reads the file."), | |
23871 | NULL, | |
23872 | NULL, | |
23873 | &setlist, &showlist); | |
23874 | ||
f1e6e072 TT |
23875 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
23876 | &dwarf2_locexpr_funcs); | |
23877 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
23878 | &dwarf2_loclist_funcs); | |
23879 | ||
23880 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
23881 | &dwarf2_block_frame_base_locexpr_funcs); | |
23882 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
23883 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
23884 | |
23885 | #if GDB_SELF_TEST | |
23886 | selftests::register_test ("dw2_expand_symtabs_matching", | |
23887 | selftests::dw2_expand_symtabs_matching::run_test); | |
22b6cd70 TT |
23888 | selftests::register_test ("dwarf2_find_containing_comp_unit", |
23889 | selftests::find_containing_comp_unit::run_test); | |
c62446b1 | 23890 | #endif |
6502dd73 | 23891 | } |