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 | { | |
9e021579 SM |
402 | explicit dwarf2_cu (dwarf2_per_cu_data *per_cu, |
403 | dwarf2_per_objfile *per_objfile); | |
fcd3b13d SM |
404 | ~dwarf2_cu (); |
405 | ||
406 | DISABLE_COPY_AND_ASSIGN (dwarf2_cu); | |
407 | ||
c24bdb02 KS |
408 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
409 | Create the set of symtabs used by this TU, or if this TU is sharing | |
410 | symtabs with another TU and the symtabs have already been created | |
411 | then restore those symtabs in the line header. | |
412 | We don't need the pc/line-number mapping for type units. */ | |
413 | void setup_type_unit_groups (struct die_info *die); | |
414 | ||
415 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the | |
416 | buildsym_compunit constructor. */ | |
417 | struct compunit_symtab *start_symtab (const char *name, | |
418 | const char *comp_dir, | |
419 | CORE_ADDR low_pc); | |
420 | ||
421 | /* Reset the builder. */ | |
422 | void reset_builder () { m_builder.reset (); } | |
423 | ||
d00adf39 | 424 | /* The header of the compilation unit. */ |
fcd3b13d | 425 | struct comp_unit_head header {}; |
e142c38c | 426 | |
d00adf39 | 427 | /* Base address of this compilation unit. */ |
2b24b6e4 | 428 | gdb::optional<CORE_ADDR> base_address; |
d00adf39 | 429 | |
e142c38c | 430 | /* The language we are debugging. */ |
fcd3b13d SM |
431 | enum language language = language_unknown; |
432 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 433 | |
fcd3b13d | 434 | const char *producer = nullptr; |
b0f35d58 | 435 | |
c24bdb02 | 436 | private: |
804d2729 TT |
437 | /* The symtab builder for this CU. This is only non-NULL when full |
438 | symbols are being read. */ | |
c24bdb02 | 439 | std::unique_ptr<buildsym_compunit> m_builder; |
804d2729 | 440 | |
c24bdb02 | 441 | public: |
e142c38c DJ |
442 | /* The generic symbol table building routines have separate lists for |
443 | file scope symbols and all all other scopes (local scopes). So | |
444 | we need to select the right one to pass to add_symbol_to_list(). | |
445 | We do it by keeping a pointer to the correct list in list_in_scope. | |
446 | ||
447 | FIXME: The original dwarf code just treated the file scope as the | |
448 | first local scope, and all other local scopes as nested local | |
449 | scopes, and worked fine. Check to see if we really need to | |
450 | distinguish these in buildsym.c. */ | |
fcd3b13d | 451 | struct pending **list_in_scope = nullptr; |
e142c38c | 452 | |
b64f50a1 JK |
453 | /* Hash table holding all the loaded partial DIEs |
454 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 455 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
456 | |
457 | /* Storage for things with the same lifetime as this read-in compilation | |
458 | unit, including partial DIEs. */ | |
fcd3b13d | 459 | auto_obstack comp_unit_obstack; |
72bf9492 | 460 | |
ae038cb0 DJ |
461 | /* When multiple dwarf2_cu structures are living in memory, this field |
462 | chains them all together, so that they can be released efficiently. | |
463 | We will probably also want a generation counter so that most-recently-used | |
464 | compilation units are cached... */ | |
fcd3b13d | 465 | struct dwarf2_per_cu_data *read_in_chain = nullptr; |
ae038cb0 | 466 | |
69d751e3 | 467 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
468 | struct dwarf2_per_cu_data *per_cu; |
469 | ||
9e021579 SM |
470 | /* The dwarf2_per_objfile that owns this. */ |
471 | struct dwarf2_per_objfile *per_objfile; | |
472 | ||
ae038cb0 | 473 | /* How many compilation units ago was this CU last referenced? */ |
fcd3b13d | 474 | int last_used = 0; |
ae038cb0 | 475 | |
b64f50a1 JK |
476 | /* A hash table of DIE cu_offset for following references with |
477 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 478 | htab_t die_hash = nullptr; |
10b3939b DJ |
479 | |
480 | /* Full DIEs if read in. */ | |
fcd3b13d | 481 | struct die_info *dies = nullptr; |
10b3939b DJ |
482 | |
483 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
484 | units referenced by this one. Only set during full symbol processing; | |
485 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 486 | htab_t dependencies = nullptr; |
10b3939b | 487 | |
cb1df416 | 488 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 489 | struct line_header *line_header = nullptr; |
4c8aa72d | 490 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
5989a64e | 491 | it's owned by dwarf2_per_bfd::line_header_hash. If non-NULL, |
4c8aa72d PA |
492 | this is the DW_TAG_compile_unit die for this CU. We'll hold on |
493 | to the line header as long as this DIE is being processed. See | |
494 | process_die_scope. */ | |
fcd3b13d | 495 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 496 | |
3da10d80 KS |
497 | /* A list of methods which need to have physnames computed |
498 | after all type information has been read. */ | |
c89b44cd | 499 | std::vector<delayed_method_info> method_list; |
3da10d80 | 500 | |
96408a79 | 501 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 502 | htab_t call_site_htab = nullptr; |
96408a79 | 503 | |
034e5797 DE |
504 | /* Non-NULL if this CU came from a DWO file. |
505 | There is an invariant here that is important to remember: | |
506 | Except for attributes copied from the top level DIE in the "main" | |
507 | (or "stub") file in preparation for reading the DWO file | |
18a8505e | 508 | (e.g., DW_AT_addr_base), we KISS: there is only *one* CU. |
034e5797 DE |
509 | Either there isn't a DWO file (in which case this is NULL and the point |
510 | is moot), or there is and either we're not going to read it (in which | |
511 | case this is NULL) or there is and we are reading it (in which case this | |
512 | is non-NULL). */ | |
fcd3b13d | 513 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 | 514 | |
18a8505e | 515 | /* The DW_AT_addr_base (DW_AT_GNU_addr_base) attribute if present. |
1dbab08b | 516 | Note this value comes from the Fission stub CU/TU's DIE. */ |
18a8505e | 517 | gdb::optional<ULONGEST> addr_base; |
3019eac3 | 518 | |
18a8505e | 519 | /* The DW_AT_rnglists_base attribute if present. |
1dbab08b | 520 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 521 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
522 | be used without needing to know whether DWO files are in use or not. |
523 | N.B. This does not apply to DW_AT_ranges appearing in | |
524 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
525 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
18a8505e | 526 | DW_AT_rnglists_base *would* have to be applied, and we'd have to care |
ab435259 | 527 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ |
fcd3b13d | 528 | ULONGEST ranges_base = 0; |
2e3cf129 | 529 | |
41144253 | 530 | /* The DW_AT_loclists_base attribute if present. */ |
531 | ULONGEST loclist_base = 0; | |
532 | ||
c9317f21 TT |
533 | /* When reading debug info generated by older versions of rustc, we |
534 | have to rewrite some union types to be struct types with a | |
535 | variant part. This rewriting must be done after the CU is fully | |
536 | read in, because otherwise at the point of rewriting some struct | |
537 | type might not have been fully processed. So, we keep a list of | |
538 | all such types here and process them after expansion. */ | |
539 | std::vector<struct type *> rust_unions; | |
540 | ||
18a8505e AT |
541 | /* The DW_AT_str_offsets_base attribute if present. For DWARF 4 version DWO |
542 | files, the value is implicitly zero. For DWARF 5 version DWO files, the | |
543 | value is often implicit and is the size of the header of | |
544 | .debug_str_offsets section (8 or 4, depending on the address size). */ | |
545 | gdb::optional<ULONGEST> str_offsets_base; | |
546 | ||
ae038cb0 | 547 | /* Mark used when releasing cached dies. */ |
9068261f | 548 | bool mark : 1; |
ae038cb0 | 549 | |
8be455d7 JK |
550 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
551 | This test is imperfect as there may exist optimized debug code not using | |
552 | any location list and still facing inlining issues if handled as | |
553 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
9068261f | 554 | bool has_loclist : 1; |
ba919b58 | 555 | |
9068261f | 556 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is true |
1b80a9fa JK |
557 | if all the producer_is_* fields are valid. This information is cached |
558 | because profiling CU expansion showed excessive time spent in | |
559 | producer_is_gxx_lt_4_6. */ | |
9068261f AB |
560 | bool checked_producer : 1; |
561 | bool producer_is_gxx_lt_4_6 : 1; | |
562 | bool producer_is_gcc_lt_4_3 : 1; | |
eb77c9df | 563 | bool producer_is_icc : 1; |
9068261f | 564 | bool producer_is_icc_lt_14 : 1; |
c258c396 | 565 | bool producer_is_codewarrior : 1; |
4d4ec4e5 | 566 | |
9068261f | 567 | /* When true, the file that we're processing is known to have |
4d4ec4e5 TT |
568 | debugging info for C++ namespaces. GCC 3.3.x did not produce |
569 | this information, but later versions do. */ | |
570 | ||
9068261f | 571 | bool processing_has_namespace_info : 1; |
d590ff25 YQ |
572 | |
573 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
c24bdb02 KS |
574 | |
575 | /* If this CU was inherited by another CU (via specification, | |
576 | abstract_origin, etc), this is the ancestor CU. */ | |
577 | dwarf2_cu *ancestor; | |
578 | ||
579 | /* Get the buildsym_compunit for this CU. */ | |
580 | buildsym_compunit *get_builder () | |
581 | { | |
582 | /* If this CU has a builder associated with it, use that. */ | |
583 | if (m_builder != nullptr) | |
584 | return m_builder.get (); | |
585 | ||
586 | /* Otherwise, search ancestors for a valid builder. */ | |
587 | if (ancestor != nullptr) | |
588 | return ancestor->get_builder (); | |
589 | ||
590 | return nullptr; | |
591 | } | |
e7c27a73 DJ |
592 | }; |
593 | ||
094b34ac DE |
594 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
595 | This includes type_unit_group and quick_file_names. */ | |
596 | ||
597 | struct stmt_list_hash | |
598 | { | |
599 | /* The DWO unit this table is from or NULL if there is none. */ | |
600 | struct dwo_unit *dwo_unit; | |
601 | ||
602 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 603 | sect_offset line_sect_off; |
094b34ac DE |
604 | }; |
605 | ||
5989a64e | 606 | /* Each element of dwarf2_per_bfd->type_unit_groups is a pointer to |
f4dc4d17 DE |
607 | an object of this type. */ |
608 | ||
609 | struct type_unit_group | |
610 | { | |
0186c6a7 | 611 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
612 | To simplify things we create an artificial CU that "includes" all the |
613 | type units using this stmt_list so that the rest of the code still has | |
197400e8 | 614 | a "per_cu" handle on the symtab. */ |
094b34ac DE |
615 | struct dwarf2_per_cu_data per_cu; |
616 | ||
0186c6a7 DE |
617 | /* The TUs that share this DW_AT_stmt_list entry. |
618 | This is added to while parsing type units to build partial symtabs, | |
619 | and is deleted afterwards and not used again. */ | |
a8b3b8e9 | 620 | std::vector<signatured_type *> *tus; |
f4dc4d17 | 621 | |
43f3e411 | 622 | /* The compunit symtab. |
094b34ac | 623 | Type units in a group needn't all be defined in the same source file, |
43f3e411 DE |
624 | so we create an essentially anonymous symtab as the compunit symtab. */ |
625 | struct compunit_symtab *compunit_symtab; | |
f4dc4d17 | 626 | |
094b34ac DE |
627 | /* The data used to construct the hash key. */ |
628 | struct stmt_list_hash hash; | |
f4dc4d17 | 629 | |
f4dc4d17 DE |
630 | /* The symbol tables for this TU (obtained from the files listed in |
631 | DW_AT_stmt_list). | |
632 | WARNING: The order of entries here must match the order of entries | |
633 | in the line header. After the first TU using this type_unit_group, the | |
634 | line header for the subsequent TUs is recreated from this. This is done | |
635 | because we need to use the same symtabs for each TU using the same | |
636 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
637 | there's no guarantee the line header doesn't have duplicate entries. */ | |
638 | struct symtab **symtabs; | |
639 | }; | |
640 | ||
73869dc2 | 641 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
642 | |
643 | struct dwo_sections | |
644 | { | |
645 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
646 | struct dwarf2_section_info line; |
647 | struct dwarf2_section_info loc; | |
43988095 | 648 | struct dwarf2_section_info loclists; |
09262596 DE |
649 | struct dwarf2_section_info macinfo; |
650 | struct dwarf2_section_info macro; | |
3019eac3 DE |
651 | struct dwarf2_section_info str; |
652 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
653 | /* In the case of a virtual DWO file, these two are unused. */ |
654 | struct dwarf2_section_info info; | |
fd5866f6 | 655 | std::vector<dwarf2_section_info> types; |
3019eac3 DE |
656 | }; |
657 | ||
c88ee1f0 | 658 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
659 | |
660 | struct dwo_unit | |
661 | { | |
662 | /* Backlink to the containing struct dwo_file. */ | |
663 | struct dwo_file *dwo_file; | |
664 | ||
665 | /* The "id" that distinguishes this CU/TU. | |
666 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
667 | Since signatures came first, we stick with it for consistency. */ | |
668 | ULONGEST signature; | |
669 | ||
670 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 671 | struct dwarf2_section_info *section; |
3019eac3 | 672 | |
9c541725 PA |
673 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
674 | sect_offset sect_off; | |
3019eac3 DE |
675 | unsigned int length; |
676 | ||
677 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
678 | cu_offset type_offset_in_tu; | |
679 | }; | |
680 | ||
73869dc2 DE |
681 | /* include/dwarf2.h defines the DWP section codes. |
682 | It defines a max value but it doesn't define a min value, which we | |
683 | use for error checking, so provide one. */ | |
684 | ||
685 | enum dwp_v2_section_ids | |
686 | { | |
687 | DW_SECT_MIN = 1 | |
688 | }; | |
689 | ||
80626a55 | 690 | /* Data for one DWO file. |
57d63ce2 DE |
691 | |
692 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
693 | appears in a DWP file). DWP files don't really have DWO files per se - | |
694 | comdat folding of types "loses" the DWO file they came from, and from | |
695 | a high level view DWP files appear to contain a mass of random types. | |
696 | However, to maintain consistency with the non-DWP case we pretend DWP | |
697 | files contain virtual DWO files, and we assign each TU with one virtual | |
698 | DWO file (generally based on the line and abbrev section offsets - | |
699 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
700 | |
701 | struct dwo_file | |
702 | { | |
51ac9db5 SM |
703 | dwo_file () = default; |
704 | DISABLE_COPY_AND_ASSIGN (dwo_file); | |
705 | ||
18a8505e | 706 | /* The DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. |
80626a55 DE |
707 | For virtual DWO files the name is constructed from the section offsets |
708 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
709 | from related CU+TUs. */ | |
51ac9db5 | 710 | const char *dwo_name = nullptr; |
0ac5b59e DE |
711 | |
712 | /* The DW_AT_comp_dir attribute. */ | |
51ac9db5 | 713 | const char *comp_dir = nullptr; |
3019eac3 | 714 | |
80626a55 DE |
715 | /* The bfd, when the file is open. Otherwise this is NULL. |
716 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
fb1eb2f9 | 717 | gdb_bfd_ref_ptr dbfd; |
3019eac3 | 718 | |
73869dc2 DE |
719 | /* The sections that make up this DWO file. |
720 | Remember that for virtual DWO files in DWP V2, these are virtual | |
721 | sections (for lack of a better name). */ | |
51ac9db5 | 722 | struct dwo_sections sections {}; |
3019eac3 | 723 | |
33c5cd75 DB |
724 | /* The CUs in the file. |
725 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
726 | an extension to handle LLVM's Link Time Optimization output (where | |
727 | multiple source files may be compiled into a single object/dwo pair). */ | |
b0b6a987 | 728 | htab_up cus; |
3019eac3 DE |
729 | |
730 | /* Table of TUs in the file. | |
731 | Each element is a struct dwo_unit. */ | |
b0b6a987 | 732 | htab_up tus; |
3019eac3 DE |
733 | }; |
734 | ||
80626a55 DE |
735 | /* These sections are what may appear in a DWP file. */ |
736 | ||
737 | struct dwp_sections | |
738 | { | |
73869dc2 | 739 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
740 | struct dwarf2_section_info str; |
741 | struct dwarf2_section_info cu_index; | |
742 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
743 | |
744 | /* These are only used by DWP version 2 files. | |
745 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
746 | sections are referenced by section number, and are not recorded here. | |
747 | In DWP version 2 there is at most one copy of all these sections, each | |
748 | section being (effectively) comprised of the concatenation of all of the | |
749 | individual sections that exist in the version 1 format. | |
750 | To keep the code simple we treat each of these concatenated pieces as a | |
751 | section itself (a virtual section?). */ | |
752 | struct dwarf2_section_info abbrev; | |
753 | struct dwarf2_section_info info; | |
754 | struct dwarf2_section_info line; | |
755 | struct dwarf2_section_info loc; | |
756 | struct dwarf2_section_info macinfo; | |
757 | struct dwarf2_section_info macro; | |
758 | struct dwarf2_section_info str_offsets; | |
759 | struct dwarf2_section_info types; | |
80626a55 DE |
760 | }; |
761 | ||
73869dc2 DE |
762 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
763 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 764 | |
73869dc2 | 765 | struct virtual_v1_dwo_sections |
80626a55 DE |
766 | { |
767 | struct dwarf2_section_info abbrev; | |
768 | struct dwarf2_section_info line; | |
769 | struct dwarf2_section_info loc; | |
770 | struct dwarf2_section_info macinfo; | |
771 | struct dwarf2_section_info macro; | |
772 | struct dwarf2_section_info str_offsets; | |
773 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 774 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
775 | struct dwarf2_section_info info_or_types; |
776 | }; | |
777 | ||
73869dc2 DE |
778 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
779 | In version 2, the sections of the DWO files are concatenated together | |
780 | and stored in one section of that name. Thus each ELF section contains | |
781 | several "virtual" sections. */ | |
782 | ||
783 | struct virtual_v2_dwo_sections | |
784 | { | |
785 | bfd_size_type abbrev_offset; | |
786 | bfd_size_type abbrev_size; | |
787 | ||
788 | bfd_size_type line_offset; | |
789 | bfd_size_type line_size; | |
790 | ||
791 | bfd_size_type loc_offset; | |
792 | bfd_size_type loc_size; | |
793 | ||
794 | bfd_size_type macinfo_offset; | |
795 | bfd_size_type macinfo_size; | |
796 | ||
797 | bfd_size_type macro_offset; | |
798 | bfd_size_type macro_size; | |
799 | ||
800 | bfd_size_type str_offsets_offset; | |
801 | bfd_size_type str_offsets_size; | |
802 | ||
803 | /* Each DWP hash table entry records one CU or one TU. | |
804 | That is recorded here, and copied to dwo_unit.section. */ | |
805 | bfd_size_type info_or_types_offset; | |
806 | bfd_size_type info_or_types_size; | |
807 | }; | |
808 | ||
80626a55 DE |
809 | /* Contents of DWP hash tables. */ |
810 | ||
811 | struct dwp_hash_table | |
812 | { | |
73869dc2 | 813 | uint32_t version, nr_columns; |
80626a55 | 814 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
815 | const gdb_byte *hash_table, *unit_table; |
816 | union | |
817 | { | |
818 | struct | |
819 | { | |
820 | const gdb_byte *indices; | |
821 | } v1; | |
822 | struct | |
823 | { | |
824 | /* This is indexed by column number and gives the id of the section | |
825 | in that column. */ | |
826 | #define MAX_NR_V2_DWO_SECTIONS \ | |
827 | (1 /* .debug_info or .debug_types */ \ | |
828 | + 1 /* .debug_abbrev */ \ | |
829 | + 1 /* .debug_line */ \ | |
830 | + 1 /* .debug_loc */ \ | |
831 | + 1 /* .debug_str_offsets */ \ | |
832 | + 1 /* .debug_macro or .debug_macinfo */) | |
833 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
834 | const gdb_byte *offsets; | |
835 | const gdb_byte *sizes; | |
836 | } v2; | |
837 | } section_pool; | |
80626a55 DE |
838 | }; |
839 | ||
840 | /* Data for one DWP file. */ | |
841 | ||
842 | struct dwp_file | |
843 | { | |
400174b1 TT |
844 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
845 | : name (name_), | |
846 | dbfd (std::move (abfd)) | |
847 | { | |
848 | } | |
849 | ||
80626a55 DE |
850 | /* Name of the file. */ |
851 | const char *name; | |
852 | ||
73869dc2 | 853 | /* File format version. */ |
400174b1 | 854 | int version = 0; |
73869dc2 | 855 | |
93417882 | 856 | /* The bfd. */ |
400174b1 | 857 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
858 | |
859 | /* Section info for this file. */ | |
400174b1 | 860 | struct dwp_sections sections {}; |
80626a55 | 861 | |
57d63ce2 | 862 | /* Table of CUs in the file. */ |
400174b1 | 863 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
864 | |
865 | /* Table of TUs in the file. */ | |
400174b1 | 866 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 867 | |
19ac8c2e | 868 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
48b490f2 TT |
869 | htab_up loaded_cus; |
870 | htab_up loaded_tus; | |
80626a55 | 871 | |
73869dc2 DE |
872 | /* Table to map ELF section numbers to their sections. |
873 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
874 | unsigned int num_sections = 0; |
875 | asection **elf_sections = nullptr; | |
80626a55 DE |
876 | }; |
877 | ||
0963b4bd MS |
878 | /* Struct used to pass misc. parameters to read_die_and_children, et |
879 | al. which are used for both .debug_info and .debug_types dies. | |
880 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 881 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
882 | |
883 | struct die_reader_specs | |
884 | { | |
a32a8923 | 885 | /* The bfd of die_section. */ |
93311388 DE |
886 | bfd* abfd; |
887 | ||
888 | /* The CU of the DIE we are parsing. */ | |
889 | struct dwarf2_cu *cu; | |
890 | ||
80626a55 | 891 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
892 | struct dwo_file *dwo_file; |
893 | ||
dee91e82 | 894 | /* The section the die comes from. |
3019eac3 | 895 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
896 | struct dwarf2_section_info *die_section; |
897 | ||
898 | /* die_section->buffer. */ | |
d521ce57 | 899 | const gdb_byte *buffer; |
f664829e DE |
900 | |
901 | /* The end of the buffer. */ | |
902 | const gdb_byte *buffer_end; | |
a2ce51a0 | 903 | |
685af9cd TT |
904 | /* The abbreviation table to use when reading the DIEs. */ |
905 | struct abbrev_table *abbrev_table; | |
93311388 DE |
906 | }; |
907 | ||
c0ab21c2 TT |
908 | /* A subclass of die_reader_specs that holds storage and has complex |
909 | constructor and destructor behavior. */ | |
910 | ||
911 | class cutu_reader : public die_reader_specs | |
912 | { | |
913 | public: | |
914 | ||
915 | cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
916 | struct abbrev_table *abbrev_table, | |
6751ebae | 917 | int use_existing_cu, |
c0ab21c2 TT |
918 | bool skip_partial); |
919 | ||
920 | explicit cutu_reader (struct dwarf2_per_cu_data *this_cu, | |
921 | struct dwarf2_cu *parent_cu = nullptr, | |
922 | struct dwo_file *dwo_file = nullptr); | |
923 | ||
c0ab21c2 TT |
924 | DISABLE_COPY_AND_ASSIGN (cutu_reader); |
925 | ||
926 | const gdb_byte *info_ptr = nullptr; | |
927 | struct die_info *comp_unit_die = nullptr; | |
c0ab21c2 TT |
928 | bool dummy_p = false; |
929 | ||
6751ebae TT |
930 | /* Release the new CU, putting it on the chain. This cannot be done |
931 | for dummy CUs. */ | |
932 | void keep (); | |
933 | ||
c0ab21c2 | 934 | private: |
9e021579 SM |
935 | void init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
936 | dwarf2_per_objfile *per_objfile, | |
6751ebae | 937 | int use_existing_cu); |
c0ab21c2 TT |
938 | |
939 | struct dwarf2_per_cu_data *m_this_cu; | |
c0ab21c2 TT |
940 | std::unique_ptr<dwarf2_cu> m_new_cu; |
941 | ||
942 | /* The ordinary abbreviation table. */ | |
943 | abbrev_table_up m_abbrev_table_holder; | |
944 | ||
945 | /* The DWO abbreviation table. */ | |
946 | abbrev_table_up m_dwo_abbrev_table; | |
947 | }; | |
dee91e82 | 948 | |
c906108c | 949 | /* When we construct a partial symbol table entry we only |
0963b4bd | 950 | need this much information. */ |
6f06d47b | 951 | struct partial_die_info : public allocate_on_obstack |
c906108c | 952 | { |
6f06d47b YQ |
953 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
954 | ||
955 | /* Disable assign but still keep copy ctor, which is needed | |
956 | load_partial_dies. */ | |
957 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
958 | ||
52356b79 YQ |
959 | /* Adjust the partial die before generating a symbol for it. This |
960 | function may set the is_external flag or change the DIE's | |
961 | name. */ | |
962 | void fixup (struct dwarf2_cu *cu); | |
963 | ||
48fbe735 YQ |
964 | /* Read a minimal amount of information into the minimal die |
965 | structure. */ | |
966 | const gdb_byte *read (const struct die_reader_specs *reader, | |
967 | const struct abbrev_info &abbrev, | |
968 | const gdb_byte *info_ptr); | |
969 | ||
72bf9492 | 970 | /* Offset of this DIE. */ |
6f06d47b | 971 | const sect_offset sect_off; |
72bf9492 DJ |
972 | |
973 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 974 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 975 | |
72bf9492 | 976 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
977 | const unsigned int has_children : 1; |
978 | ||
72bf9492 DJ |
979 | unsigned int is_external : 1; |
980 | unsigned int is_declaration : 1; | |
981 | unsigned int has_type : 1; | |
982 | unsigned int has_specification : 1; | |
983 | unsigned int has_pc_info : 1; | |
481860b3 | 984 | unsigned int may_be_inlined : 1; |
72bf9492 | 985 | |
0c1b455e TT |
986 | /* This DIE has been marked DW_AT_main_subprogram. */ |
987 | unsigned int main_subprogram : 1; | |
988 | ||
72bf9492 DJ |
989 | /* Flag set if the SCOPE field of this structure has been |
990 | computed. */ | |
991 | unsigned int scope_set : 1; | |
992 | ||
fa4028e9 JB |
993 | /* Flag set if the DIE has a byte_size attribute. */ |
994 | unsigned int has_byte_size : 1; | |
995 | ||
ff908ebf AW |
996 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
997 | unsigned int has_const_value : 1; | |
998 | ||
98bfdba5 PA |
999 | /* Flag set if any of the DIE's children are template arguments. */ |
1000 | unsigned int has_template_arguments : 1; | |
1001 | ||
52356b79 | 1002 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1003 | unsigned int fixup_called : 1; |
1004 | ||
36586728 TT |
1005 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1006 | unsigned int is_dwz : 1; | |
1007 | ||
1008 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1009 | unsigned int spec_is_dwz : 1; | |
1010 | ||
72bf9492 | 1011 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1012 | sometimes a default name for unnamed DIEs. */ |
6f06d47b | 1013 | const char *name = nullptr; |
72bf9492 | 1014 | |
abc72ce4 | 1015 | /* The linkage name, if present. */ |
6f06d47b | 1016 | const char *linkage_name = nullptr; |
abc72ce4 | 1017 | |
72bf9492 DJ |
1018 | /* The scope to prepend to our children. This is generally |
1019 | allocated on the comp_unit_obstack, so will disappear | |
1020 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1021 | const char *scope = nullptr; |
72bf9492 | 1022 | |
95554aad TT |
1023 | /* Some data associated with the partial DIE. The tag determines |
1024 | which field is live. */ | |
1025 | union | |
1026 | { | |
1027 | /* The location description associated with this DIE, if any. */ | |
1028 | struct dwarf_block *locdesc; | |
1029 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1030 | sect_offset sect_off; |
6f06d47b | 1031 | } d {}; |
72bf9492 DJ |
1032 | |
1033 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1034 | CORE_ADDR lowpc = 0; |
1035 | CORE_ADDR highpc = 0; | |
72bf9492 | 1036 | |
93311388 | 1037 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1038 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1039 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1040 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1041 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1042 | |
1043 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1044 | DW_AT_specification (or DW_AT_abstract_origin or | |
1045 | DW_AT_extension). */ | |
6f06d47b | 1046 | sect_offset spec_offset {}; |
72bf9492 DJ |
1047 | |
1048 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1049 | if any. */ | |
6f06d47b YQ |
1050 | struct partial_die_info *die_parent = nullptr; |
1051 | struct partial_die_info *die_child = nullptr; | |
1052 | struct partial_die_info *die_sibling = nullptr; | |
1053 | ||
1054 | friend struct partial_die_info * | |
1055 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1056 | ||
1057 | private: | |
1058 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1059 | partial_die_info (sect_offset sect_off) | |
1060 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1061 | { | |
1062 | } | |
1063 | ||
1064 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1065 | int has_children_) | |
1066 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1067 | { | |
1068 | is_external = 0; | |
1069 | is_declaration = 0; | |
1070 | has_type = 0; | |
1071 | has_specification = 0; | |
1072 | has_pc_info = 0; | |
1073 | may_be_inlined = 0; | |
1074 | main_subprogram = 0; | |
1075 | scope_set = 0; | |
1076 | has_byte_size = 0; | |
1077 | has_const_value = 0; | |
1078 | has_template_arguments = 0; | |
1079 | fixup_called = 0; | |
1080 | is_dwz = 0; | |
1081 | spec_is_dwz = 0; | |
1082 | } | |
c906108c SS |
1083 | }; |
1084 | ||
c906108c SS |
1085 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1086 | but this would require a corresponding change in unpack_field_as_long | |
1087 | and friends. */ | |
1088 | static int bits_per_byte = 8; | |
1089 | ||
9c6a1327 TT |
1090 | struct variant_part_builder; |
1091 | ||
1092 | /* When reading a variant, we track a bit more information about the | |
1093 | field, and store it in an object of this type. */ | |
2ddeaf8a TT |
1094 | |
1095 | struct variant_field | |
1096 | { | |
9c6a1327 TT |
1097 | int first_field = -1; |
1098 | int last_field = -1; | |
1099 | ||
1100 | /* A variant can contain other variant parts. */ | |
1101 | std::vector<variant_part_builder> variant_parts; | |
1102 | ||
2ddeaf8a TT |
1103 | /* If we see a DW_TAG_variant, then this will be set if this is the |
1104 | default branch. */ | |
9c6a1327 TT |
1105 | bool default_branch = false; |
1106 | /* If we see a DW_AT_discr_value, then this will be the discriminant | |
1107 | value. */ | |
1108 | ULONGEST discriminant_value = 0; | |
1109 | /* If we see a DW_AT_discr_list, then this is a pointer to the list | |
1110 | data. */ | |
1111 | struct dwarf_block *discr_list_data = nullptr; | |
1112 | }; | |
1113 | ||
1114 | /* This represents a DW_TAG_variant_part. */ | |
1115 | ||
1116 | struct variant_part_builder | |
1117 | { | |
1118 | /* The offset of the discriminant field. */ | |
1119 | sect_offset discriminant_offset {}; | |
1120 | ||
1121 | /* Variants that are direct children of this variant part. */ | |
1122 | std::vector<variant_field> variants; | |
1123 | ||
1124 | /* True if we're currently reading a variant. */ | |
1125 | bool processing_variant = false; | |
2ddeaf8a TT |
1126 | }; |
1127 | ||
52059ffd TT |
1128 | struct nextfield |
1129 | { | |
be2daae6 TT |
1130 | int accessibility = 0; |
1131 | int virtuality = 0; | |
9c6a1327 TT |
1132 | /* Variant parts need to find the discriminant, which is a DIE |
1133 | reference. We track the section offset of each field to make | |
1134 | this link. */ | |
1135 | sect_offset offset; | |
be2daae6 | 1136 | struct field field {}; |
52059ffd TT |
1137 | }; |
1138 | ||
1139 | struct fnfieldlist | |
1140 | { | |
be2daae6 TT |
1141 | const char *name = nullptr; |
1142 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1143 | }; |
1144 | ||
c906108c SS |
1145 | /* The routines that read and process dies for a C struct or C++ class |
1146 | pass lists of data member fields and lists of member function fields | |
1147 | in an instance of a field_info structure, as defined below. */ | |
1148 | struct field_info | |
c5aa993b | 1149 | { |
0963b4bd | 1150 | /* List of data member and baseclasses fields. */ |
be2daae6 TT |
1151 | std::vector<struct nextfield> fields; |
1152 | std::vector<struct nextfield> baseclasses; | |
c906108c | 1153 | |
85102364 | 1154 | /* Set if the accessibility of one of the fields is not public. */ |
be2daae6 | 1155 | int non_public_fields = 0; |
c906108c | 1156 | |
c5aa993b JM |
1157 | /* Member function fieldlist array, contains name of possibly overloaded |
1158 | member function, number of overloaded member functions and a pointer | |
1159 | to the head of the member function field chain. */ | |
be2daae6 | 1160 | std::vector<struct fnfieldlist> fnfieldlists; |
98751a41 JK |
1161 | |
1162 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1163 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
be2daae6 | 1164 | std::vector<struct decl_field> typedef_field_list; |
883fd55a KS |
1165 | |
1166 | /* Nested types defined by this class and the number of elements in this | |
1167 | list. */ | |
be2daae6 | 1168 | std::vector<struct decl_field> nested_types_list; |
317f7127 | 1169 | |
9c6a1327 TT |
1170 | /* If non-null, this is the variant part we are currently |
1171 | reading. */ | |
1172 | variant_part_builder *current_variant_part = nullptr; | |
1173 | /* This holds all the top-level variant parts attached to the type | |
1174 | we're reading. */ | |
1175 | std::vector<variant_part_builder> variant_parts; | |
1176 | ||
317f7127 TT |
1177 | /* Return the total number of fields (including baseclasses). */ |
1178 | int nfields () const | |
1179 | { | |
1180 | return fields.size () + baseclasses.size (); | |
1181 | } | |
c5aa993b | 1182 | }; |
c906108c | 1183 | |
ae038cb0 DJ |
1184 | /* Loaded secondary compilation units are kept in memory until they |
1185 | have not been referenced for the processing of this many | |
1186 | compilation units. Set this to zero to disable caching. Cache | |
1187 | sizes of up to at least twenty will improve startup time for | |
1188 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1189 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1190 | static void |
b4f54984 DE |
1191 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1192 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1193 | { |
3e43a32a | 1194 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1195 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1196 | value); |
1197 | } | |
4390d890 | 1198 | \f |
c906108c SS |
1199 | /* local function prototypes */ |
1200 | ||
918dd910 JK |
1201 | static void dwarf2_find_base_address (struct die_info *die, |
1202 | struct dwarf2_cu *cu); | |
1203 | ||
891813be | 1204 | static dwarf2_psymtab *create_partial_symtab |
0018ea6f DE |
1205 | (struct dwarf2_per_cu_data *per_cu, const char *name); |
1206 | ||
f1902523 JK |
1207 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1208 | const gdb_byte *info_ptr, | |
3e225074 | 1209 | struct die_info *type_unit_die); |
f1902523 | 1210 | |
ed2dc618 SM |
1211 | static void dwarf2_build_psymtabs_hard |
1212 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
c906108c | 1213 | |
72bf9492 DJ |
1214 | static void scan_partial_symbols (struct partial_die_info *, |
1215 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1216 | int, struct dwarf2_cu *); |
c906108c | 1217 | |
72bf9492 DJ |
1218 | static void add_partial_symbol (struct partial_die_info *, |
1219 | struct dwarf2_cu *); | |
63d06c5c | 1220 | |
72bf9492 DJ |
1221 | static void add_partial_namespace (struct partial_die_info *pdi, |
1222 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1223 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1224 | |
5d7cb8df | 1225 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1226 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1227 | struct dwarf2_cu *cu); |
1228 | ||
72bf9492 DJ |
1229 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1230 | struct dwarf2_cu *cu); | |
91c24f0a | 1231 | |
bc30ff58 JB |
1232 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1233 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1234 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1235 | |
d521ce57 | 1236 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1237 | |
dee91e82 | 1238 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1239 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1240 | |
fb816e8b TV |
1241 | /* A pair of partial_die_info and compilation unit. */ |
1242 | struct cu_partial_die_info | |
1243 | { | |
1244 | /* The compilation unit of the partial_die_info. */ | |
1245 | struct dwarf2_cu *cu; | |
1246 | /* A partial_die_info. */ | |
1247 | struct partial_die_info *pdi; | |
122cf0f2 AB |
1248 | |
1249 | cu_partial_die_info (struct dwarf2_cu *cu, struct partial_die_info *pdi) | |
1250 | : cu (cu), | |
1251 | pdi (pdi) | |
405feb71 | 1252 | { /* Nothing. */ } |
122cf0f2 AB |
1253 | |
1254 | private: | |
1255 | cu_partial_die_info () = delete; | |
fb816e8b TV |
1256 | }; |
1257 | ||
122cf0f2 AB |
1258 | static const struct cu_partial_die_info find_partial_die (sect_offset, int, |
1259 | struct dwarf2_cu *); | |
72bf9492 | 1260 | |
d521ce57 TT |
1261 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1262 | struct attribute *, struct attr_abbrev *, | |
18a8505e AT |
1263 | const gdb_byte *, bool *need_reprocess); |
1264 | ||
1265 | static void read_attribute_reprocess (const struct die_reader_specs *reader, | |
1266 | struct attribute *attr); | |
1267 | ||
1268 | static CORE_ADDR read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index); | |
a8329558 | 1269 | |
ed2dc618 SM |
1270 | static sect_offset read_abbrev_offset |
1271 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
1272 | struct dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1273 | |
ed2dc618 SM |
1274 | static const char *read_indirect_string |
1275 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1276 | const struct comp_unit_head *, unsigned int *); | |
4bdf3d34 | 1277 | |
ed2dc618 | 1278 | static const char *read_indirect_string_at_offset |
4f44ae6c | 1279 | (struct dwarf2_per_objfile *dwarf2_per_objfile, LONGEST str_offset); |
927aa2e7 | 1280 | |
d521ce57 TT |
1281 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1282 | const gdb_byte *, | |
3019eac3 DE |
1283 | unsigned int *); |
1284 | ||
18a8505e AT |
1285 | static const char *read_dwo_str_index (const struct die_reader_specs *reader, |
1286 | ULONGEST str_index); | |
1287 | ||
1288 | static const char *read_stub_str_index (struct dwarf2_cu *cu, | |
1289 | ULONGEST str_index); | |
3019eac3 | 1290 | |
e142c38c | 1291 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1292 | |
e142c38c DJ |
1293 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1294 | struct dwarf2_cu *); | |
c906108c | 1295 | |
7d45c7c3 KB |
1296 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1297 | struct dwarf2_cu *cu); | |
1298 | ||
a084a2a6 AT |
1299 | static const char *dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu); |
1300 | ||
05cf31d1 JB |
1301 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1302 | struct dwarf2_cu *cu); | |
1303 | ||
e142c38c | 1304 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1305 | |
e142c38c | 1306 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1307 | struct dwarf2_cu **); |
63d06c5c | 1308 | |
9c541725 | 1309 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1310 | struct dwarf2_cu *cu); |
debd256d | 1311 | |
f3f5162e | 1312 | static void dwarf_decode_lines (struct line_header *, const char *, |
891813be | 1313 | struct dwarf2_cu *, dwarf2_psymtab *, |
527f3840 | 1314 | CORE_ADDR, int decode_mapping); |
c906108c | 1315 | |
804d2729 TT |
1316 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1317 | const char *); | |
c906108c | 1318 | |
a14ed312 | 1319 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1320 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1321 | |
ff39bb5e | 1322 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1323 | struct dwarf2_cu *); |
c906108c | 1324 | |
ff39bb5e | 1325 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1326 | struct type *type, |
1327 | const char *name, | |
1328 | struct obstack *obstack, | |
12df843f | 1329 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1330 | const gdb_byte **bytes, |
98bfdba5 | 1331 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1332 | |
e7c27a73 | 1333 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1334 | |
b4ba55a1 JB |
1335 | static int need_gnat_info (struct dwarf2_cu *); |
1336 | ||
3e43a32a MS |
1337 | static struct type *die_descriptive_type (struct die_info *, |
1338 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1339 | |
1340 | static void set_descriptive_type (struct type *, struct die_info *, | |
1341 | struct dwarf2_cu *); | |
1342 | ||
e7c27a73 DJ |
1343 | static struct type *die_containing_type (struct die_info *, |
1344 | struct dwarf2_cu *); | |
c906108c | 1345 | |
ff39bb5e | 1346 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1347 | struct dwarf2_cu *); |
c906108c | 1348 | |
f792889a | 1349 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1350 | |
673bfd45 DE |
1351 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1352 | ||
0d5cff50 | 1353 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1354 | |
6e70227d | 1355 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1356 | const char *suffix, int physname, |
1357 | struct dwarf2_cu *cu); | |
63d06c5c | 1358 | |
e7c27a73 | 1359 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1360 | |
348e048f DE |
1361 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1362 | ||
e7c27a73 | 1363 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1364 | |
e7c27a73 | 1365 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1366 | |
96408a79 SA |
1367 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1368 | ||
71a3c369 TT |
1369 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1370 | ||
ff013f42 | 1371 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
891813be | 1372 | struct dwarf2_cu *, dwarf2_psymtab *); |
ff013f42 | 1373 | |
41144253 | 1374 | /* Return the .debug_loclists section to use for cu. */ |
1375 | static struct dwarf2_section_info *cu_debug_loc_section (struct dwarf2_cu *cu); | |
1376 | ||
3a2b436a | 1377 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1378 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1379 | enum pc_bounds_kind |
1380 | { | |
e385593e | 1381 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1382 | PC_BOUNDS_NOT_PRESENT, |
1383 | ||
e385593e JK |
1384 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1385 | were present but they do not form a valid range of PC addresses. */ | |
1386 | PC_BOUNDS_INVALID, | |
1387 | ||
3a2b436a JK |
1388 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1389 | PC_BOUNDS_RANGES, | |
1390 | ||
1391 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1392 | PC_BOUNDS_HIGH_LOW, | |
1393 | }; | |
1394 | ||
1395 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1396 | CORE_ADDR *, CORE_ADDR *, | |
1397 | struct dwarf2_cu *, | |
891813be | 1398 | dwarf2_psymtab *); |
c906108c | 1399 | |
fae299cd DC |
1400 | static void get_scope_pc_bounds (struct die_info *, |
1401 | CORE_ADDR *, CORE_ADDR *, | |
1402 | struct dwarf2_cu *); | |
1403 | ||
801e3a5b JB |
1404 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1405 | CORE_ADDR, struct dwarf2_cu *); | |
1406 | ||
a14ed312 | 1407 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1408 | struct dwarf2_cu *); |
c906108c | 1409 | |
a14ed312 | 1410 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1411 | struct type *, struct dwarf2_cu *); |
c906108c | 1412 | |
a14ed312 | 1413 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1414 | struct die_info *, struct type *, |
e7c27a73 | 1415 | struct dwarf2_cu *); |
c906108c | 1416 | |
a14ed312 | 1417 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1418 | struct type *, |
1419 | struct dwarf2_cu *); | |
c906108c | 1420 | |
134d01f1 | 1421 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1422 | |
e7c27a73 | 1423 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1424 | |
e7c27a73 | 1425 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1426 | |
5d7cb8df JK |
1427 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1428 | ||
804d2729 | 1429 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1430 | |
27aa8d6a SW |
1431 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1432 | ||
74921315 KS |
1433 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1434 | ||
f55ee35c JK |
1435 | static struct type *read_module_type (struct die_info *die, |
1436 | struct dwarf2_cu *cu); | |
1437 | ||
38d518c9 | 1438 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1439 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1440 | |
134d01f1 | 1441 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1442 | |
7d79de9a TT |
1443 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *, |
1444 | bool * = nullptr); | |
c906108c | 1445 | |
6e70227d | 1446 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1447 | struct dwarf2_cu *); |
1448 | ||
bf6af496 | 1449 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1450 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1451 | struct die_info *); |
639d11d3 | 1452 | |
dee91e82 | 1453 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1454 | const gdb_byte *info_ptr, |
1455 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1456 | struct die_info *parent); |
1457 | ||
d521ce57 TT |
1458 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1459 | struct die_info **, const gdb_byte *, | |
3e225074 | 1460 | int); |
3019eac3 | 1461 | |
d521ce57 | 1462 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
3e225074 | 1463 | struct die_info **, const gdb_byte *); |
93311388 | 1464 | |
e7c27a73 | 1465 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1466 | |
15d034d0 | 1467 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
be1e3d3e | 1468 | struct objfile *); |
71c25dea | 1469 | |
15d034d0 | 1470 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1471 | |
15d034d0 | 1472 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1473 | struct die_info *die, |
1474 | struct dwarf2_cu *cu); | |
1475 | ||
ca69b9e6 DE |
1476 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1477 | struct dwarf2_cu *cu); | |
1478 | ||
e142c38c | 1479 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1480 | struct dwarf2_cu **); |
9219021c | 1481 | |
d97bc12b DE |
1482 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1483 | ||
1484 | static void dump_die_for_error (struct die_info *); | |
1485 | ||
1486 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1487 | struct die_info *); | |
c906108c | 1488 | |
d97bc12b | 1489 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1490 | |
51545339 | 1491 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1492 | struct dwarf2_cu *); |
c906108c | 1493 | |
348e048f | 1494 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1495 | const struct attribute *, |
348e048f DE |
1496 | struct dwarf2_cu **); |
1497 | ||
10b3939b | 1498 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1499 | const struct attribute *, |
f2f0e013 | 1500 | struct dwarf2_cu **); |
c906108c | 1501 | |
348e048f | 1502 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1503 | const struct attribute *, |
348e048f DE |
1504 | struct dwarf2_cu **); |
1505 | ||
ac9ec31b DE |
1506 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1507 | struct dwarf2_cu *); | |
1508 | ||
1509 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1510 | const struct attribute *, |
ac9ec31b DE |
1511 | struct dwarf2_cu *); |
1512 | ||
e5fe5e75 | 1513 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1514 | |
52dc124a | 1515 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1516 | |
63e43d3a PMR |
1517 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1518 | struct die_info *die, struct dwarf2_cu *cu, | |
9a49df9d | 1519 | struct dynamic_prop *prop, struct type *type); |
63e43d3a | 1520 | |
c906108c SS |
1521 | /* memory allocation interface */ |
1522 | ||
7b5a2f43 | 1523 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1524 | |
b60c80d6 | 1525 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1526 | |
43f3e411 | 1527 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1528 | |
8cf6f0b1 TT |
1529 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1530 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1531 | const struct attribute *attr); |
8cf6f0b1 | 1532 | |
ff39bb5e | 1533 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1534 | struct symbol *sym, |
f1e6e072 TT |
1535 | struct dwarf2_cu *cu, |
1536 | int is_block); | |
4c2df51b | 1537 | |
d521ce57 TT |
1538 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1539 | const gdb_byte *info_ptr, | |
1540 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1541 | |
72bf9492 DJ |
1542 | static hashval_t partial_die_hash (const void *item); |
1543 | ||
1544 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1545 | ||
ae038cb0 | 1546 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 SM |
1547 | (sect_offset sect_off, unsigned int offset_in_dwz, |
1548 | struct dwarf2_per_objfile *dwarf2_per_objfile); | |
ae038cb0 | 1549 | |
9816fde3 | 1550 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1551 | struct die_info *comp_unit_die, |
1552 | enum language pretend_language); | |
93311388 | 1553 | |
ed2dc618 | 1554 | static void age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1555 | |
dee91e82 | 1556 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1557 | |
f792889a DJ |
1558 | static struct type *set_die_type (struct die_info *, struct type *, |
1559 | struct dwarf2_cu *); | |
1c379e20 | 1560 | |
ed2dc618 | 1561 | static void create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1562 | |
ed2dc618 | 1563 | static int create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
1fd400ff | 1564 | |
58f0c718 | 1565 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, bool, |
95554aad | 1566 | enum language); |
10b3939b | 1567 | |
95554aad TT |
1568 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1569 | enum language); | |
10b3939b | 1570 | |
f4dc4d17 DE |
1571 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1572 | enum language); | |
1573 | ||
10b3939b DJ |
1574 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1575 | struct dwarf2_per_cu_data *); | |
1576 | ||
ae038cb0 DJ |
1577 | static void dwarf2_mark (struct dwarf2_cu *); |
1578 | ||
1579 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1580 | ||
b64f50a1 | 1581 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1582 | struct dwarf2_per_cu_data *); |
673bfd45 | 1583 | |
f792889a | 1584 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1585 | |
95554aad TT |
1586 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1587 | enum language pretend_language); | |
1588 | ||
ed2dc618 | 1589 | static void process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile); |
9291a0cd | 1590 | |
b303c6f6 AB |
1591 | /* Class, the destructor of which frees all allocated queue entries. This |
1592 | will only have work to do if an error was thrown while processing the | |
1593 | dwarf. If no error was thrown then the queue entries should have all | |
1594 | been processed, and freed, as we went along. */ | |
1595 | ||
1596 | class dwarf2_queue_guard | |
1597 | { | |
1598 | public: | |
39856def TT |
1599 | explicit dwarf2_queue_guard (dwarf2_per_objfile *per_objfile) |
1600 | : m_per_objfile (per_objfile) | |
1601 | { | |
1602 | } | |
b303c6f6 AB |
1603 | |
1604 | /* Free any entries remaining on the queue. There should only be | |
1605 | entries left if we hit an error while processing the dwarf. */ | |
1606 | ~dwarf2_queue_guard () | |
1607 | { | |
39856def TT |
1608 | /* Ensure that no memory is allocated by the queue. */ |
1609 | std::queue<dwarf2_queue_item> empty; | |
5989a64e | 1610 | std::swap (m_per_objfile->per_bfd->queue, empty); |
39856def | 1611 | } |
b303c6f6 | 1612 | |
39856def | 1613 | DISABLE_COPY_AND_ASSIGN (dwarf2_queue_guard); |
b303c6f6 | 1614 | |
39856def TT |
1615 | private: |
1616 | dwarf2_per_objfile *m_per_objfile; | |
b303c6f6 AB |
1617 | }; |
1618 | ||
39856def TT |
1619 | dwarf2_queue_item::~dwarf2_queue_item () |
1620 | { | |
1621 | /* Anything still marked queued is likely to be in an | |
1622 | inconsistent state, so discard it. */ | |
1623 | if (per_cu->queued) | |
1624 | { | |
1625 | if (per_cu->cu != NULL) | |
1626 | free_one_cached_comp_unit (per_cu); | |
1627 | per_cu->queued = 0; | |
1628 | } | |
1629 | } | |
1630 | ||
d721ba37 PA |
1631 | /* The return type of find_file_and_directory. Note, the enclosed |
1632 | string pointers are only valid while this object is valid. */ | |
1633 | ||
1634 | struct file_and_directory | |
1635 | { | |
1636 | /* The filename. This is never NULL. */ | |
1637 | const char *name; | |
1638 | ||
1639 | /* The compilation directory. NULL if not known. If we needed to | |
1640 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1641 | points directly to the DW_AT_comp_dir string attribute owned by | |
1642 | the obstack that owns the DIE. */ | |
1643 | const char *comp_dir; | |
1644 | ||
1645 | /* If we needed to build a new string for comp_dir, this is what | |
1646 | owns the storage. */ | |
1647 | std::string comp_dir_storage; | |
1648 | }; | |
1649 | ||
1650 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1651 | struct dwarf2_cu *cu); | |
9291a0cd | 1652 | |
298e9637 | 1653 | static htab_up allocate_signatured_type_table (); |
1fd400ff | 1654 | |
298e9637 | 1655 | static htab_up allocate_dwo_unit_table (); |
3019eac3 | 1656 | |
57d63ce2 | 1657 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
ed2dc618 SM |
1658 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
1659 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 1660 | ULONGEST signature, int is_debug_types); |
a2ce51a0 | 1661 | |
ed2dc618 SM |
1662 | static struct dwp_file *get_dwp_file |
1663 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
a2ce51a0 | 1664 | |
3019eac3 | 1665 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 1666 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
1667 | |
1668 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 1669 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 1670 | |
89e63ee4 DE |
1671 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
1672 | ||
263db9a1 TT |
1673 | /* A unique pointer to a dwo_file. */ |
1674 | ||
51ac9db5 | 1675 | typedef std::unique_ptr<struct dwo_file> dwo_file_up; |
263db9a1 | 1676 | |
ed2dc618 | 1677 | static void process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile); |
95554aad | 1678 | |
1b80a9fa | 1679 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1680 | |
1681 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1682 | \f |
1683 | /* Various complaints about symbol reading that don't abort the process. */ | |
1684 | ||
4390d890 DE |
1685 | static void |
1686 | dwarf2_debug_line_missing_file_complaint (void) | |
1687 | { | |
b98664d3 | 1688 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
1689 | } |
1690 | ||
1691 | static void | |
1692 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1693 | { | |
b98664d3 | 1694 | complaint (_(".debug_line section has line " |
4390d890 DE |
1695 | "program sequence without an end")); |
1696 | } | |
1697 | ||
1698 | static void | |
1699 | dwarf2_complex_location_expr_complaint (void) | |
1700 | { | |
b98664d3 | 1701 | complaint (_("location expression too complex")); |
4390d890 DE |
1702 | } |
1703 | ||
1704 | static void | |
1705 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1706 | int arg3) | |
1707 | { | |
b98664d3 | 1708 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
1709 | arg1, arg2, arg3); |
1710 | } | |
1711 | ||
4390d890 DE |
1712 | static void |
1713 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1714 | { | |
b98664d3 | 1715 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
1716 | arg1, arg2); |
1717 | } | |
527f3840 JK |
1718 | |
1719 | /* Hash function for line_header_hash. */ | |
1720 | ||
1721 | static hashval_t | |
1722 | line_header_hash (const struct line_header *ofs) | |
1723 | { | |
9c541725 | 1724 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
1725 | } |
1726 | ||
1727 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
1728 | ||
1729 | static hashval_t | |
1730 | line_header_hash_voidp (const void *item) | |
1731 | { | |
9a3c8263 | 1732 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
1733 | |
1734 | return line_header_hash (ofs); | |
1735 | } | |
1736 | ||
1737 | /* Equality function for line_header_hash. */ | |
1738 | ||
1739 | static int | |
1740 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
1741 | { | |
9a3c8263 SM |
1742 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
1743 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 1744 | |
9c541725 | 1745 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
1746 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
1747 | } | |
1748 | ||
4390d890 | 1749 | \f |
9291a0cd | 1750 | |
330cdd98 PA |
1751 | /* See declaration. */ |
1752 | ||
5989a64e SM |
1753 | dwarf2_per_bfd::dwarf2_per_bfd (bfd *obfd, const dwarf2_debug_sections *names, |
1754 | bool can_copy_) | |
c3699833 SM |
1755 | : obfd (obfd), |
1756 | can_copy (can_copy_) | |
330cdd98 PA |
1757 | { |
1758 | if (names == NULL) | |
1759 | names = &dwarf2_elf_names; | |
1760 | ||
330cdd98 PA |
1761 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) |
1762 | locate_sections (obfd, sec, *names); | |
1763 | } | |
1764 | ||
5989a64e | 1765 | dwarf2_per_bfd::~dwarf2_per_bfd () |
330cdd98 PA |
1766 | { |
1767 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
1768 | free_cached_comp_units (); | |
1769 | ||
b76e467d | 1770 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
ae640021 | 1771 | per_cu->imported_symtabs_free (); |
fc8e7e75 | 1772 | |
b2bdb8cf | 1773 | for (signatured_type *sig_type : all_type_units) |
ae640021 | 1774 | sig_type->per_cu.imported_symtabs_free (); |
fc8e7e75 | 1775 | |
5989a64e | 1776 | /* Everything else should be on this->obstack. */ |
330cdd98 PA |
1777 | } |
1778 | ||
1779 | /* See declaration. */ | |
1780 | ||
1781 | void | |
5989a64e | 1782 | dwarf2_per_bfd::free_cached_comp_units () |
330cdd98 PA |
1783 | { |
1784 | dwarf2_per_cu_data *per_cu = read_in_chain; | |
1785 | dwarf2_per_cu_data **last_chain = &read_in_chain; | |
1786 | while (per_cu != NULL) | |
1787 | { | |
1788 | dwarf2_per_cu_data *next_cu = per_cu->cu->read_in_chain; | |
1789 | ||
fcd3b13d | 1790 | delete per_cu->cu; |
330cdd98 PA |
1791 | *last_chain = next_cu; |
1792 | per_cu = next_cu; | |
1793 | } | |
1794 | } | |
1795 | ||
11ed8cad TT |
1796 | /* A helper class that calls free_cached_comp_units on |
1797 | destruction. */ | |
1798 | ||
1799 | class free_cached_comp_units | |
1800 | { | |
1801 | public: | |
1802 | ||
1803 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
1804 | : m_per_objfile (per_objfile) | |
1805 | { | |
1806 | } | |
1807 | ||
1808 | ~free_cached_comp_units () | |
1809 | { | |
5989a64e | 1810 | m_per_objfile->per_bfd->free_cached_comp_units (); |
11ed8cad TT |
1811 | } |
1812 | ||
1813 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
1814 | ||
1815 | private: | |
1816 | ||
1817 | dwarf2_per_objfile *m_per_objfile; | |
1818 | }; | |
1819 | ||
af758d11 SM |
1820 | /* See read.h. */ |
1821 | ||
1822 | bool | |
1823 | dwarf2_per_objfile::symtab_set_p (const dwarf2_per_cu_data *per_cu) const | |
1824 | { | |
1825 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1826 | ||
1827 | return this->m_symtabs[per_cu->index] != nullptr; | |
1828 | } | |
1829 | ||
1830 | /* See read.h. */ | |
1831 | ||
1832 | compunit_symtab * | |
1833 | dwarf2_per_objfile::get_symtab (const dwarf2_per_cu_data *per_cu) const | |
1834 | { | |
1835 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1836 | ||
1837 | return this->m_symtabs[per_cu->index]; | |
1838 | } | |
1839 | ||
1840 | /* See read.h. */ | |
1841 | ||
1842 | void | |
1843 | dwarf2_per_objfile::set_symtab (const dwarf2_per_cu_data *per_cu, | |
1844 | compunit_symtab *symtab) | |
1845 | { | |
1846 | gdb_assert (per_cu->index < this->m_symtabs.size ()); | |
1847 | gdb_assert (this->m_symtabs[per_cu->index] == nullptr); | |
1848 | ||
1849 | this->m_symtabs[per_cu->index] = symtab; | |
1850 | } | |
1851 | ||
c906108c | 1852 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1853 | information and return true if we have enough to do something. |
1854 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
4b610737 TT |
1855 | ELF names are used. CAN_COPY is true for formats where symbol |
1856 | interposition is possible and so symbol values must follow copy | |
1857 | relocation rules. */ | |
c906108c SS |
1858 | |
1859 | int | |
251d32d9 | 1860 | dwarf2_has_info (struct objfile *objfile, |
4b610737 TT |
1861 | const struct dwarf2_debug_sections *names, |
1862 | bool can_copy) | |
c906108c | 1863 | { |
97cbe998 SDJ |
1864 | if (objfile->flags & OBJF_READNEVER) |
1865 | return 0; | |
1866 | ||
ed2dc618 SM |
1867 | struct dwarf2_per_objfile *dwarf2_per_objfile |
1868 | = get_dwarf2_per_objfile (objfile); | |
1869 | ||
1870 | if (dwarf2_per_objfile == NULL) | |
5989a64e SM |
1871 | { |
1872 | /* For now, each dwarf2_per_objfile owns its own dwarf2_per_bfd (no | |
1873 | sharing yet). */ | |
1874 | dwarf2_per_bfd *per_bfd = new dwarf2_per_bfd (objfile->obfd, names, can_copy); | |
1875 | ||
1876 | dwarf2_per_objfile = dwarf2_objfile_data_key.emplace (objfile, objfile, per_bfd); | |
1877 | } | |
5bfd760d | 1878 | |
5989a64e SM |
1879 | return (!dwarf2_per_objfile->per_bfd->info.is_virtual |
1880 | && dwarf2_per_objfile->per_bfd->info.s.section != NULL | |
1881 | && !dwarf2_per_objfile->per_bfd->abbrev.is_virtual | |
1882 | && dwarf2_per_objfile->per_bfd->abbrev.s.section != NULL); | |
73869dc2 DE |
1883 | } |
1884 | ||
251d32d9 TG |
1885 | /* When loading sections, we look either for uncompressed section or for |
1886 | compressed section names. */ | |
233a11ab CS |
1887 | |
1888 | static int | |
251d32d9 TG |
1889 | section_is_p (const char *section_name, |
1890 | const struct dwarf2_section_names *names) | |
233a11ab | 1891 | { |
251d32d9 TG |
1892 | if (names->normal != NULL |
1893 | && strcmp (section_name, names->normal) == 0) | |
1894 | return 1; | |
1895 | if (names->compressed != NULL | |
1896 | && strcmp (section_name, names->compressed) == 0) | |
1897 | return 1; | |
1898 | return 0; | |
233a11ab CS |
1899 | } |
1900 | ||
330cdd98 | 1901 | /* See declaration. */ |
c906108c | 1902 | |
330cdd98 | 1903 | void |
5989a64e SM |
1904 | dwarf2_per_bfd::locate_sections (bfd *abfd, asection *sectp, |
1905 | const dwarf2_debug_sections &names) | |
c906108c | 1906 | { |
fd361982 | 1907 | flagword aflag = bfd_section_flags (sectp); |
251d32d9 | 1908 | |
dc7650b8 JK |
1909 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
1910 | { | |
1911 | } | |
950b7495 KS |
1912 | else if (elf_section_data (sectp)->this_hdr.sh_size |
1913 | > bfd_get_file_size (abfd)) | |
1914 | { | |
1915 | bfd_size_type size = elf_section_data (sectp)->this_hdr.sh_size; | |
1916 | warning (_("Discarding section %s which has a section size (%s" | |
1917 | ") larger than the file size [in module %s]"), | |
1918 | bfd_section_name (sectp), phex_nz (size, sizeof (size)), | |
1919 | bfd_get_filename (abfd)); | |
1920 | } | |
330cdd98 | 1921 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 1922 | { |
330cdd98 | 1923 | this->info.s.section = sectp; |
fd361982 | 1924 | this->info.size = bfd_section_size (sectp); |
c906108c | 1925 | } |
330cdd98 | 1926 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 1927 | { |
330cdd98 | 1928 | this->abbrev.s.section = sectp; |
fd361982 | 1929 | this->abbrev.size = bfd_section_size (sectp); |
c906108c | 1930 | } |
330cdd98 | 1931 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 1932 | { |
330cdd98 | 1933 | this->line.s.section = sectp; |
fd361982 | 1934 | this->line.size = bfd_section_size (sectp); |
c906108c | 1935 | } |
330cdd98 | 1936 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 1937 | { |
330cdd98 | 1938 | this->loc.s.section = sectp; |
fd361982 | 1939 | this->loc.size = bfd_section_size (sectp); |
c906108c | 1940 | } |
330cdd98 | 1941 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 1942 | { |
330cdd98 | 1943 | this->loclists.s.section = sectp; |
fd361982 | 1944 | this->loclists.size = bfd_section_size (sectp); |
43988095 | 1945 | } |
330cdd98 | 1946 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 1947 | { |
330cdd98 | 1948 | this->macinfo.s.section = sectp; |
fd361982 | 1949 | this->macinfo.size = bfd_section_size (sectp); |
c906108c | 1950 | } |
330cdd98 | 1951 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 1952 | { |
330cdd98 | 1953 | this->macro.s.section = sectp; |
fd361982 | 1954 | this->macro.size = bfd_section_size (sectp); |
cf2c3c16 | 1955 | } |
330cdd98 | 1956 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 1957 | { |
330cdd98 | 1958 | this->str.s.section = sectp; |
fd361982 | 1959 | this->str.size = bfd_section_size (sectp); |
c906108c | 1960 | } |
18a8505e AT |
1961 | else if (section_is_p (sectp->name, &names.str_offsets)) |
1962 | { | |
1963 | this->str_offsets.s.section = sectp; | |
1964 | this->str_offsets.size = bfd_section_size (sectp); | |
1965 | } | |
330cdd98 | 1966 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 1967 | { |
330cdd98 | 1968 | this->line_str.s.section = sectp; |
fd361982 | 1969 | this->line_str.size = bfd_section_size (sectp); |
43988095 | 1970 | } |
330cdd98 | 1971 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 1972 | { |
330cdd98 | 1973 | this->addr.s.section = sectp; |
fd361982 | 1974 | this->addr.size = bfd_section_size (sectp); |
3019eac3 | 1975 | } |
330cdd98 | 1976 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 1977 | { |
330cdd98 | 1978 | this->frame.s.section = sectp; |
fd361982 | 1979 | this->frame.size = bfd_section_size (sectp); |
b6af0555 | 1980 | } |
330cdd98 | 1981 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 1982 | { |
330cdd98 | 1983 | this->eh_frame.s.section = sectp; |
fd361982 | 1984 | this->eh_frame.size = bfd_section_size (sectp); |
b6af0555 | 1985 | } |
330cdd98 | 1986 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 1987 | { |
330cdd98 | 1988 | this->ranges.s.section = sectp; |
fd361982 | 1989 | this->ranges.size = bfd_section_size (sectp); |
af34e669 | 1990 | } |
330cdd98 | 1991 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 1992 | { |
330cdd98 | 1993 | this->rnglists.s.section = sectp; |
fd361982 | 1994 | this->rnglists.size = bfd_section_size (sectp); |
43988095 | 1995 | } |
330cdd98 | 1996 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 1997 | { |
8b70b953 TT |
1998 | struct dwarf2_section_info type_section; |
1999 | ||
2000 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2001 | type_section.s.section = sectp; |
fd361982 | 2002 | type_section.size = bfd_section_size (sectp); |
8b70b953 | 2003 | |
fd5866f6 | 2004 | this->types.push_back (type_section); |
348e048f | 2005 | } |
330cdd98 | 2006 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 2007 | { |
330cdd98 | 2008 | this->gdb_index.s.section = sectp; |
fd361982 | 2009 | this->gdb_index.size = bfd_section_size (sectp); |
9291a0cd | 2010 | } |
927aa2e7 JK |
2011 | else if (section_is_p (sectp->name, &names.debug_names)) |
2012 | { | |
2013 | this->debug_names.s.section = sectp; | |
fd361982 | 2014 | this->debug_names.size = bfd_section_size (sectp); |
927aa2e7 JK |
2015 | } |
2016 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2017 | { | |
2018 | this->debug_aranges.s.section = sectp; | |
fd361982 | 2019 | this->debug_aranges.size = bfd_section_size (sectp); |
927aa2e7 | 2020 | } |
dce234bc | 2021 | |
fd361982 AM |
2022 | if ((bfd_section_flags (sectp) & (SEC_LOAD | SEC_ALLOC)) |
2023 | && bfd_section_vma (sectp) == 0) | |
330cdd98 | 2024 | this->has_section_at_zero = true; |
c906108c SS |
2025 | } |
2026 | ||
dce234bc | 2027 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2028 | SECTION_NAME. */ |
af34e669 | 2029 | |
dce234bc | 2030 | void |
3017a003 TG |
2031 | dwarf2_get_section_info (struct objfile *objfile, |
2032 | enum dwarf2_section_enum sect, | |
d521ce57 | 2033 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2034 | bfd_size_type *sizep) |
2035 | { | |
5bfd760d | 2036 | struct dwarf2_per_objfile *data = dwarf2_objfile_data_key.get (objfile); |
dce234bc | 2037 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2038 | |
2039 | /* We may see an objfile without any DWARF, in which case we just | |
2040 | return nothing. */ | |
2041 | if (data == NULL) | |
2042 | { | |
2043 | *sectp = NULL; | |
2044 | *bufp = NULL; | |
2045 | *sizep = 0; | |
2046 | return; | |
2047 | } | |
3017a003 TG |
2048 | switch (sect) |
2049 | { | |
2050 | case DWARF2_DEBUG_FRAME: | |
5989a64e | 2051 | info = &data->per_bfd->frame; |
3017a003 TG |
2052 | break; |
2053 | case DWARF2_EH_FRAME: | |
5989a64e | 2054 | info = &data->per_bfd->eh_frame; |
3017a003 TG |
2055 | break; |
2056 | default: | |
2057 | gdb_assert_not_reached ("unexpected section"); | |
2058 | } | |
dce234bc | 2059 | |
96b79293 | 2060 | info->read (objfile); |
dce234bc | 2061 | |
96b79293 | 2062 | *sectp = info->get_bfd_section (); |
dce234bc PP |
2063 | *bufp = info->buffer; |
2064 | *sizep = info->size; | |
2065 | } | |
2066 | ||
36586728 TT |
2067 | /* A helper function to find the sections for a .dwz file. */ |
2068 | ||
2069 | static void | |
2070 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2071 | { | |
9a3c8263 | 2072 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2073 | |
2074 | /* Note that we only support the standard ELF names, because .dwz | |
2075 | is ELF-only (at the time of writing). */ | |
2076 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2077 | { | |
049412e3 | 2078 | dwz_file->abbrev.s.section = sectp; |
fd361982 | 2079 | dwz_file->abbrev.size = bfd_section_size (sectp); |
36586728 TT |
2080 | } |
2081 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2082 | { | |
049412e3 | 2083 | dwz_file->info.s.section = sectp; |
fd361982 | 2084 | dwz_file->info.size = bfd_section_size (sectp); |
36586728 TT |
2085 | } |
2086 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2087 | { | |
049412e3 | 2088 | dwz_file->str.s.section = sectp; |
fd361982 | 2089 | dwz_file->str.size = bfd_section_size (sectp); |
36586728 TT |
2090 | } |
2091 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2092 | { | |
049412e3 | 2093 | dwz_file->line.s.section = sectp; |
fd361982 | 2094 | dwz_file->line.size = bfd_section_size (sectp); |
36586728 TT |
2095 | } |
2096 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2097 | { | |
049412e3 | 2098 | dwz_file->macro.s.section = sectp; |
fd361982 | 2099 | dwz_file->macro.size = bfd_section_size (sectp); |
36586728 | 2100 | } |
2ec9a5e0 TT |
2101 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2102 | { | |
049412e3 | 2103 | dwz_file->gdb_index.s.section = sectp; |
fd361982 | 2104 | dwz_file->gdb_index.size = bfd_section_size (sectp); |
2ec9a5e0 | 2105 | } |
927aa2e7 JK |
2106 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2107 | { | |
2108 | dwz_file->debug_names.s.section = sectp; | |
fd361982 | 2109 | dwz_file->debug_names.size = bfd_section_size (sectp); |
927aa2e7 | 2110 | } |
36586728 TT |
2111 | } |
2112 | ||
c4973306 | 2113 | /* See dwarf2read.h. */ |
36586728 | 2114 | |
c4973306 | 2115 | struct dwz_file * |
c3699833 | 2116 | dwarf2_get_dwz_file (dwarf2_per_bfd *per_bfd) |
36586728 | 2117 | { |
36586728 | 2118 | const char *filename; |
acd13123 | 2119 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2120 | size_t buildid_len; |
2121 | bfd_byte *buildid; | |
36586728 | 2122 | |
c3699833 SM |
2123 | if (per_bfd->dwz_file != NULL) |
2124 | return per_bfd->dwz_file.get (); | |
36586728 | 2125 | |
4db1a1dc | 2126 | bfd_set_error (bfd_error_no_error); |
791afaa2 | 2127 | gdb::unique_xmalloc_ptr<char> data |
c3699833 | 2128 | (bfd_get_alt_debug_link_info (per_bfd->obfd, |
791afaa2 | 2129 | &buildid_len_arg, &buildid)); |
4db1a1dc TT |
2130 | if (data == NULL) |
2131 | { | |
2132 | if (bfd_get_error () == bfd_error_no_error) | |
2133 | return NULL; | |
2134 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2135 | bfd_errmsg (bfd_get_error ())); | |
2136 | } | |
791afaa2 TT |
2137 | |
2138 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2139 | |
acd13123 TT |
2140 | buildid_len = (size_t) buildid_len_arg; |
2141 | ||
791afaa2 | 2142 | filename = data.get (); |
d721ba37 PA |
2143 | |
2144 | std::string abs_storage; | |
36586728 TT |
2145 | if (!IS_ABSOLUTE_PATH (filename)) |
2146 | { | |
14278e1f | 2147 | gdb::unique_xmalloc_ptr<char> abs |
c3699833 | 2148 | = gdb_realpath (bfd_get_filename (per_bfd->obfd)); |
36586728 | 2149 | |
14278e1f | 2150 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2151 | filename = abs_storage.c_str (); |
36586728 TT |
2152 | } |
2153 | ||
dc294be5 TT |
2154 | /* First try the file name given in the section. If that doesn't |
2155 | work, try to use the build-id instead. */ | |
ad80db5b | 2156 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget)); |
dc294be5 | 2157 | if (dwz_bfd != NULL) |
36586728 | 2158 | { |
192b62ce | 2159 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
0f58c9e8 | 2160 | dwz_bfd.reset (nullptr); |
36586728 TT |
2161 | } |
2162 | ||
dc294be5 TT |
2163 | if (dwz_bfd == NULL) |
2164 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2165 | ||
0d79cdc4 AM |
2166 | if (dwz_bfd == nullptr) |
2167 | { | |
2168 | gdb::unique_xmalloc_ptr<char> alt_filename; | |
c3699833 | 2169 | const char *origname = bfd_get_filename (per_bfd->obfd); |
0d79cdc4 AM |
2170 | |
2171 | scoped_fd fd (debuginfod_debuginfo_query (buildid, | |
2172 | buildid_len, | |
2173 | origname, | |
2174 | &alt_filename)); | |
2175 | ||
2176 | if (fd.get () >= 0) | |
2177 | { | |
2178 | /* File successfully retrieved from server. */ | |
ad80db5b | 2179 | dwz_bfd = gdb_bfd_open (alt_filename.get (), gnutarget); |
0d79cdc4 AM |
2180 | |
2181 | if (dwz_bfd == nullptr) | |
2182 | warning (_("File \"%s\" from debuginfod cannot be opened as bfd"), | |
2183 | alt_filename.get ()); | |
2184 | else if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) | |
2185 | dwz_bfd.reset (nullptr); | |
2186 | } | |
2187 | } | |
2188 | ||
dc294be5 TT |
2189 | if (dwz_bfd == NULL) |
2190 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
c3699833 | 2191 | bfd_get_filename (per_bfd->obfd)); |
dc294be5 | 2192 | |
7ff8cb8c TT |
2193 | std::unique_ptr<struct dwz_file> result |
2194 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2195 | |
7ff8cb8c TT |
2196 | bfd_map_over_sections (result->dwz_bfd.get (), locate_dwz_sections, |
2197 | result.get ()); | |
36586728 | 2198 | |
c3699833 SM |
2199 | gdb_bfd_record_inclusion (per_bfd->obfd, result->dwz_bfd.get ()); |
2200 | per_bfd->dwz_file = std::move (result); | |
2201 | return per_bfd->dwz_file.get (); | |
36586728 | 2202 | } |
9291a0cd | 2203 | \f |
7b9f3c50 DE |
2204 | /* DWARF quick_symbols_functions support. */ |
2205 | ||
2206 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2207 | unique line tables, so we maintain a separate table of all .debug_line | |
2208 | derived entries to support the sharing. | |
2209 | All the quick functions need is the list of file names. We discard the | |
2210 | line_header when we're done and don't need to record it here. */ | |
2211 | struct quick_file_names | |
2212 | { | |
094b34ac DE |
2213 | /* The data used to construct the hash key. */ |
2214 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2215 | |
2216 | /* The number of entries in file_names, real_names. */ | |
2217 | unsigned int num_file_names; | |
2218 | ||
2219 | /* The file names from the line table, after being run through | |
2220 | file_full_name. */ | |
2221 | const char **file_names; | |
2222 | ||
2223 | /* The file names from the line table after being run through | |
2224 | gdb_realpath. These are computed lazily. */ | |
2225 | const char **real_names; | |
2226 | }; | |
2227 | ||
2228 | /* When using the index (and thus not using psymtabs), each CU has an | |
2229 | object of this type. This is used to hold information needed by | |
2230 | the various "quick" methods. */ | |
2231 | struct dwarf2_per_cu_quick_data | |
2232 | { | |
2233 | /* The file table. This can be NULL if there was no file table | |
2234 | or it's currently not read in. | |
5989a64e | 2235 | NOTE: This points into dwarf2_per_objfile->per_bfd->quick_file_names_table. */ |
7b9f3c50 DE |
2236 | struct quick_file_names *file_names; |
2237 | ||
7b9f3c50 DE |
2238 | /* A temporary mark bit used when iterating over all CUs in |
2239 | expand_symtabs_matching. */ | |
2240 | unsigned int mark : 1; | |
2241 | ||
2242 | /* True if we've tried to read the file table and found there isn't one. | |
2243 | There will be no point in trying to read it again next time. */ | |
2244 | unsigned int no_file_data : 1; | |
2245 | }; | |
2246 | ||
094b34ac DE |
2247 | /* Utility hash function for a stmt_list_hash. */ |
2248 | ||
2249 | static hashval_t | |
2250 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2251 | { | |
2252 | hashval_t v = 0; | |
2253 | ||
2254 | if (stmt_list_hash->dwo_unit != NULL) | |
2255 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2256 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2257 | return v; |
2258 | } | |
2259 | ||
2260 | /* Utility equality function for a stmt_list_hash. */ | |
2261 | ||
2262 | static int | |
2263 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2264 | const struct stmt_list_hash *rhs) | |
2265 | { | |
2266 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2267 | return 0; | |
2268 | if (lhs->dwo_unit != NULL | |
2269 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2270 | return 0; | |
2271 | ||
9c541725 | 2272 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2273 | } |
2274 | ||
7b9f3c50 DE |
2275 | /* Hash function for a quick_file_names. */ |
2276 | ||
2277 | static hashval_t | |
2278 | hash_file_name_entry (const void *e) | |
2279 | { | |
9a3c8263 SM |
2280 | const struct quick_file_names *file_data |
2281 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2282 | |
094b34ac | 2283 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2284 | } |
2285 | ||
2286 | /* Equality function for a quick_file_names. */ | |
2287 | ||
2288 | static int | |
2289 | eq_file_name_entry (const void *a, const void *b) | |
2290 | { | |
9a3c8263 SM |
2291 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2292 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2293 | |
094b34ac | 2294 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2295 | } |
2296 | ||
2297 | /* Delete function for a quick_file_names. */ | |
2298 | ||
2299 | static void | |
2300 | delete_file_name_entry (void *e) | |
2301 | { | |
9a3c8263 | 2302 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2303 | int i; |
2304 | ||
2305 | for (i = 0; i < file_data->num_file_names; ++i) | |
2306 | { | |
2307 | xfree ((void*) file_data->file_names[i]); | |
2308 | if (file_data->real_names) | |
2309 | xfree ((void*) file_data->real_names[i]); | |
2310 | } | |
2311 | ||
45940949 TT |
2312 | /* The space for the struct itself lives on the obstack, so we don't |
2313 | free it here. */ | |
7b9f3c50 DE |
2314 | } |
2315 | ||
2316 | /* Create a quick_file_names hash table. */ | |
2317 | ||
5895093f | 2318 | static htab_up |
7b9f3c50 DE |
2319 | create_quick_file_names_table (unsigned int nr_initial_entries) |
2320 | { | |
5895093f TT |
2321 | return htab_up (htab_create_alloc (nr_initial_entries, |
2322 | hash_file_name_entry, eq_file_name_entry, | |
2323 | delete_file_name_entry, xcalloc, xfree)); | |
7b9f3c50 | 2324 | } |
9291a0cd | 2325 | |
918dd910 JK |
2326 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2327 | have to be created afterwards. You should call age_cached_comp_units after | |
2328 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2329 | ||
2330 | static void | |
58f0c718 | 2331 | load_cu (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
918dd910 | 2332 | { |
3019eac3 | 2333 | if (per_cu->is_debug_types) |
e5fe5e75 | 2334 | load_full_type_unit (per_cu); |
918dd910 | 2335 | else |
58f0c718 | 2336 | load_full_comp_unit (per_cu, skip_partial, language_minimal); |
918dd910 | 2337 | |
cc12ce38 DE |
2338 | if (per_cu->cu == NULL) |
2339 | return; /* Dummy CU. */ | |
2dc860c0 DE |
2340 | |
2341 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2342 | } |
2343 | ||
97a1449a | 2344 | /* Read in the symbols for PER_CU in the context of DWARF"_PER_OBJFILE. */ |
2fdf6df6 | 2345 | |
9291a0cd | 2346 | static void |
97a1449a SM |
2347 | dw2_do_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
2348 | dwarf2_per_objfile *dwarf2_per_objfile, | |
2349 | bool skip_partial) | |
9291a0cd | 2350 | { |
f4dc4d17 DE |
2351 | /* Skip type_unit_groups, reading the type units they contain |
2352 | is handled elsewhere. */ | |
197400e8 | 2353 | if (per_cu->type_unit_group_p ()) |
f4dc4d17 DE |
2354 | return; |
2355 | ||
b303c6f6 AB |
2356 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2357 | the queue. After this point we're guaranteed to leave this function | |
2358 | with the dwarf queue empty. */ | |
39856def | 2359 | dwarf2_queue_guard q_guard (dwarf2_per_objfile); |
9291a0cd | 2360 | |
af758d11 | 2361 | if (!dwarf2_per_objfile->symtab_set_p (per_cu)) |
95554aad TT |
2362 | { |
2363 | queue_comp_unit (per_cu, language_minimal); | |
58f0c718 | 2364 | load_cu (per_cu, skip_partial); |
89e63ee4 DE |
2365 | |
2366 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2367 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2368 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2369 | if (!per_cu->is_debug_types | |
cc12ce38 | 2370 | && per_cu->cu != NULL |
89e63ee4 | 2371 | && per_cu->cu->dwo_unit != NULL |
5989a64e SM |
2372 | && dwarf2_per_objfile->per_bfd->index_table != NULL |
2373 | && dwarf2_per_objfile->per_bfd->index_table->version <= 7 | |
89e63ee4 | 2374 | /* DWP files aren't supported yet. */ |
ed2dc618 | 2375 | && get_dwp_file (dwarf2_per_objfile) == NULL) |
89e63ee4 | 2376 | queue_and_load_all_dwo_tus (per_cu); |
95554aad | 2377 | } |
9291a0cd | 2378 | |
ed2dc618 | 2379 | process_queue (dwarf2_per_objfile); |
9291a0cd TT |
2380 | |
2381 | /* Age the cache, releasing compilation units that have not | |
2382 | been used recently. */ | |
ed2dc618 | 2383 | age_cached_comp_units (dwarf2_per_objfile); |
9291a0cd TT |
2384 | } |
2385 | ||
97a1449a SM |
2386 | /* Ensure that the symbols for PER_CU have been read in. DWARF2_PER_OBJFILE is |
2387 | the per-objfile for which this symtab is instantiated. | |
2388 | ||
2389 | Returns the resulting symbol table. */ | |
2fdf6df6 | 2390 | |
43f3e411 | 2391 | static struct compunit_symtab * |
97a1449a SM |
2392 | dw2_instantiate_symtab (dwarf2_per_cu_data *per_cu, |
2393 | dwarf2_per_objfile *dwarf2_per_objfile, | |
2394 | bool skip_partial) | |
9291a0cd | 2395 | { |
5989a64e | 2396 | gdb_assert (dwarf2_per_objfile->per_bfd->using_index); |
af758d11 SM |
2397 | |
2398 | if (!dwarf2_per_objfile->symtab_set_p (per_cu)) | |
9291a0cd | 2399 | { |
11ed8cad | 2400 | free_cached_comp_units freer (dwarf2_per_objfile); |
c83dd867 | 2401 | scoped_restore decrementer = increment_reading_symtab (); |
97a1449a | 2402 | dw2_do_instantiate_symtab (per_cu, dwarf2_per_objfile, skip_partial); |
ed2dc618 | 2403 | process_cu_includes (dwarf2_per_objfile); |
9291a0cd | 2404 | } |
f194fefb | 2405 | |
af758d11 | 2406 | return dwarf2_per_objfile->get_symtab (per_cu); |
9291a0cd TT |
2407 | } |
2408 | ||
ff4c9fec | 2409 | /* See declaration. */ |
f4dc4d17 | 2410 | |
ff4c9fec | 2411 | dwarf2_per_cu_data * |
5989a64e | 2412 | dwarf2_per_bfd::get_cutu (int index) |
ff4c9fec | 2413 | { |
b76e467d | 2414 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2415 | { |
b76e467d | 2416 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2417 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2418 | return &this->all_type_units[index]->per_cu; |
2419 | } | |
f4dc4d17 | 2420 | |
ff4c9fec SM |
2421 | return this->all_comp_units[index]; |
2422 | } | |
f4dc4d17 | 2423 | |
ff4c9fec | 2424 | /* See declaration. */ |
2fdf6df6 | 2425 | |
ff4c9fec | 2426 | dwarf2_per_cu_data * |
5989a64e | 2427 | dwarf2_per_bfd::get_cu (int index) |
1fd400ff | 2428 | { |
b76e467d | 2429 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2430 | |
ff4c9fec | 2431 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2432 | } |
2433 | ||
ff4c9fec | 2434 | /* See declaration. */ |
f4dc4d17 | 2435 | |
ff4c9fec | 2436 | signatured_type * |
5989a64e | 2437 | dwarf2_per_bfd::get_tu (int index) |
f4dc4d17 | 2438 | { |
b2bdb8cf | 2439 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2440 | |
ff4c9fec | 2441 | return this->all_type_units[index]; |
1fd400ff TT |
2442 | } |
2443 | ||
d3473f0c TT |
2444 | /* See read.h. */ |
2445 | ||
2446 | dwarf2_per_cu_data * | |
5989a64e | 2447 | dwarf2_per_bfd::allocate_per_cu () |
d3473f0c TT |
2448 | { |
2449 | dwarf2_per_cu_data *result = OBSTACK_ZALLOC (&obstack, dwarf2_per_cu_data); | |
1859c670 | 2450 | result->per_bfd = this; |
d3473f0c TT |
2451 | result->index = m_num_psymtabs++; |
2452 | return result; | |
2453 | } | |
2454 | ||
2455 | /* See read.h. */ | |
2456 | ||
2457 | signatured_type * | |
5989a64e | 2458 | dwarf2_per_bfd::allocate_signatured_type () |
d3473f0c TT |
2459 | { |
2460 | signatured_type *result = OBSTACK_ZALLOC (&obstack, signatured_type); | |
1859c670 | 2461 | result->per_cu.per_bfd = this; |
d3473f0c TT |
2462 | result->per_cu.index = m_num_psymtabs++; |
2463 | return result; | |
2464 | } | |
2465 | ||
45940949 TT |
2466 | /* Return a new dwarf2_per_cu_data allocated on the dwarf2_per_objfile |
2467 | obstack, and constructed with the specified field values. */ | |
4b514bc8 JK |
2468 | |
2469 | static dwarf2_per_cu_data * | |
ed2dc618 | 2470 | create_cu_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4b514bc8 JK |
2471 | struct dwarf2_section_info *section, |
2472 | int is_dwz, | |
2473 | sect_offset sect_off, ULONGEST length) | |
2474 | { | |
5989a64e | 2475 | dwarf2_per_cu_data *the_cu = dwarf2_per_objfile->per_bfd->allocate_per_cu (); |
4b514bc8 JK |
2476 | the_cu->sect_off = sect_off; |
2477 | the_cu->length = length; | |
e3b94546 | 2478 | the_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
4b514bc8 | 2479 | the_cu->section = section; |
5989a64e | 2480 | the_cu->v.quick = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
45940949 | 2481 | struct dwarf2_per_cu_quick_data); |
4b514bc8 JK |
2482 | the_cu->is_dwz = is_dwz; |
2483 | return the_cu; | |
2484 | } | |
2485 | ||
2ec9a5e0 TT |
2486 | /* A helper for create_cus_from_index that handles a given list of |
2487 | CUs. */ | |
2fdf6df6 | 2488 | |
74a0d9f6 | 2489 | static void |
12359b5e | 2490 | create_cus_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
2491 | const gdb_byte *cu_list, offset_type n_elements, |
2492 | struct dwarf2_section_info *section, | |
b76e467d | 2493 | int is_dwz) |
9291a0cd | 2494 | { |
12359b5e | 2495 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2496 | { |
74a0d9f6 | 2497 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2498 | |
2499 | sect_offset sect_off | |
2500 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2501 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2502 | cu_list += 2 * 8; |
2503 | ||
b76e467d | 2504 | dwarf2_per_cu_data *per_cu |
ed2dc618 SM |
2505 | = create_cu_from_index_list (dwarf2_per_objfile, section, is_dwz, |
2506 | sect_off, length); | |
5989a64e | 2507 | dwarf2_per_objfile->per_bfd->all_comp_units.push_back (per_cu); |
9291a0cd | 2508 | } |
9291a0cd TT |
2509 | } |
2510 | ||
2ec9a5e0 | 2511 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 2512 | the CU objects for this objfile. */ |
2ec9a5e0 | 2513 | |
74a0d9f6 | 2514 | static void |
12359b5e | 2515 | create_cus_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
2516 | const gdb_byte *cu_list, offset_type cu_list_elements, |
2517 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2518 | { | |
5989a64e SM |
2519 | gdb_assert (dwarf2_per_objfile->per_bfd->all_comp_units.empty ()); |
2520 | dwarf2_per_objfile->per_bfd->all_comp_units.reserve | |
b76e467d | 2521 | ((cu_list_elements + dwz_elements) / 2); |
2ec9a5e0 | 2522 | |
12359b5e | 2523 | create_cus_from_index_list (dwarf2_per_objfile, cu_list, cu_list_elements, |
5989a64e | 2524 | &dwarf2_per_objfile->per_bfd->info, 0); |
2ec9a5e0 TT |
2525 | |
2526 | if (dwz_elements == 0) | |
74a0d9f6 | 2527 | return; |
2ec9a5e0 | 2528 | |
c3699833 | 2529 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile->per_bfd); |
12359b5e | 2530 | create_cus_from_index_list (dwarf2_per_objfile, dwz_list, dwz_elements, |
b76e467d | 2531 | &dwz->info, 1); |
2ec9a5e0 TT |
2532 | } |
2533 | ||
1fd400ff | 2534 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2535 | |
74a0d9f6 | 2536 | static void |
12359b5e SM |
2537 | create_signatured_type_table_from_index |
2538 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
2539 | struct dwarf2_section_info *section, | |
2540 | const gdb_byte *bytes, | |
2541 | offset_type elements) | |
1fd400ff | 2542 | { |
5989a64e SM |
2543 | gdb_assert (dwarf2_per_objfile->per_bfd->all_type_units.empty ()); |
2544 | dwarf2_per_objfile->per_bfd->all_type_units.reserve (elements / 3); | |
1fd400ff | 2545 | |
298e9637 | 2546 | htab_up sig_types_hash = allocate_signatured_type_table (); |
1fd400ff | 2547 | |
12359b5e | 2548 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 2549 | { |
52dc124a | 2550 | struct signatured_type *sig_type; |
9c541725 | 2551 | ULONGEST signature; |
1fd400ff | 2552 | void **slot; |
9c541725 | 2553 | cu_offset type_offset_in_tu; |
1fd400ff | 2554 | |
74a0d9f6 | 2555 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2556 | sect_offset sect_off |
2557 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2558 | type_offset_in_tu | |
2559 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
2560 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2561 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2562 | bytes += 3 * 8; | |
2563 | ||
5989a64e | 2564 | sig_type = dwarf2_per_objfile->per_bfd->allocate_signatured_type (); |
52dc124a | 2565 | sig_type->signature = signature; |
9c541725 | 2566 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 2567 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 2568 | sig_type->per_cu.section = section; |
9c541725 | 2569 | sig_type->per_cu.sect_off = sect_off; |
e3b94546 | 2570 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
52dc124a | 2571 | sig_type->per_cu.v.quick |
5989a64e | 2572 | = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
1fd400ff TT |
2573 | struct dwarf2_per_cu_quick_data); |
2574 | ||
b0b6a987 | 2575 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
52dc124a | 2576 | *slot = sig_type; |
1fd400ff | 2577 | |
5989a64e | 2578 | dwarf2_per_objfile->per_bfd->all_type_units.push_back (sig_type); |
1fd400ff TT |
2579 | } |
2580 | ||
5989a64e | 2581 | dwarf2_per_objfile->per_bfd->signatured_types = std::move (sig_types_hash); |
1fd400ff TT |
2582 | } |
2583 | ||
927aa2e7 JK |
2584 | /* Create the signatured type hash table from .debug_names. */ |
2585 | ||
2586 | static void | |
2587 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 2588 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
2589 | const mapped_debug_names &map, |
2590 | struct dwarf2_section_info *section, | |
2591 | struct dwarf2_section_info *abbrev_section) | |
2592 | { | |
ed2dc618 SM |
2593 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2594 | ||
96b79293 TT |
2595 | section->read (objfile); |
2596 | abbrev_section->read (objfile); | |
927aa2e7 | 2597 | |
5989a64e SM |
2598 | gdb_assert (dwarf2_per_objfile->per_bfd->all_type_units.empty ()); |
2599 | dwarf2_per_objfile->per_bfd->all_type_units.reserve (map.tu_count); | |
927aa2e7 | 2600 | |
298e9637 | 2601 | htab_up sig_types_hash = allocate_signatured_type_table (); |
927aa2e7 JK |
2602 | |
2603 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
2604 | { | |
2605 | struct signatured_type *sig_type; | |
927aa2e7 | 2606 | void **slot; |
927aa2e7 JK |
2607 | |
2608 | sect_offset sect_off | |
2609 | = (sect_offset) (extract_unsigned_integer | |
2610 | (map.tu_table_reordered + i * map.offset_size, | |
2611 | map.offset_size, | |
2612 | map.dwarf5_byte_order)); | |
2613 | ||
2614 | comp_unit_head cu_header; | |
ed2dc618 SM |
2615 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
2616 | abbrev_section, | |
927aa2e7 JK |
2617 | section->buffer + to_underlying (sect_off), |
2618 | rcuh_kind::TYPE); | |
2619 | ||
5989a64e | 2620 | sig_type = dwarf2_per_objfile->per_bfd->allocate_signatured_type (); |
927aa2e7 JK |
2621 | sig_type->signature = cu_header.signature; |
2622 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
2623 | sig_type->per_cu.is_debug_types = 1; | |
2624 | sig_type->per_cu.section = section; | |
2625 | sig_type->per_cu.sect_off = sect_off; | |
e3b94546 | 2626 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
927aa2e7 | 2627 | sig_type->per_cu.v.quick |
5989a64e | 2628 | = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
927aa2e7 JK |
2629 | struct dwarf2_per_cu_quick_data); |
2630 | ||
b0b6a987 | 2631 | slot = htab_find_slot (sig_types_hash.get (), sig_type, INSERT); |
927aa2e7 JK |
2632 | *slot = sig_type; |
2633 | ||
5989a64e | 2634 | dwarf2_per_objfile->per_bfd->all_type_units.push_back (sig_type); |
927aa2e7 JK |
2635 | } |
2636 | ||
5989a64e | 2637 | dwarf2_per_objfile->per_bfd->signatured_types = std::move (sig_types_hash); |
927aa2e7 JK |
2638 | } |
2639 | ||
9291a0cd TT |
2640 | /* Read the address map data from the mapped index, and use it to |
2641 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2642 | |
9291a0cd | 2643 | static void |
ed2dc618 SM |
2644 | create_addrmap_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2645 | struct mapped_index *index) | |
9291a0cd | 2646 | { |
ed2dc618 | 2647 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 2648 | struct gdbarch *gdbarch = objfile->arch (); |
9291a0cd | 2649 | const gdb_byte *iter, *end; |
9291a0cd | 2650 | struct addrmap *mutable_map; |
9291a0cd TT |
2651 | CORE_ADDR baseaddr; |
2652 | ||
8268c778 PA |
2653 | auto_obstack temp_obstack; |
2654 | ||
9291a0cd TT |
2655 | mutable_map = addrmap_create_mutable (&temp_obstack); |
2656 | ||
f00a2de2 PA |
2657 | iter = index->address_table.data (); |
2658 | end = iter + index->address_table.size (); | |
9291a0cd | 2659 | |
b3b3bada | 2660 | baseaddr = objfile->text_section_offset (); |
9291a0cd TT |
2661 | |
2662 | while (iter < end) | |
2663 | { | |
2664 | ULONGEST hi, lo, cu_index; | |
2665 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2666 | iter += 8; | |
2667 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2668 | iter += 8; | |
2669 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2670 | iter += 4; | |
f652bce2 | 2671 | |
24a55014 | 2672 | if (lo > hi) |
f652bce2 | 2673 | { |
b98664d3 | 2674 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 2675 | hex_string (lo), hex_string (hi)); |
24a55014 | 2676 | continue; |
f652bce2 | 2677 | } |
24a55014 | 2678 | |
5989a64e | 2679 | if (cu_index >= dwarf2_per_objfile->per_bfd->all_comp_units.size ()) |
f652bce2 | 2680 | { |
b98664d3 | 2681 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 2682 | (unsigned) cu_index); |
24a55014 | 2683 | continue; |
f652bce2 | 2684 | } |
24a55014 | 2685 | |
79748972 TT |
2686 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
2687 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 2688 | addrmap_set_empty (mutable_map, lo, hi - 1, |
5989a64e | 2689 | dwarf2_per_objfile->per_bfd->get_cu (cu_index)); |
9291a0cd TT |
2690 | } |
2691 | ||
d320c2b5 | 2692 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2693 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
9291a0cd TT |
2694 | } |
2695 | ||
927aa2e7 JK |
2696 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
2697 | populate the objfile's psymtabs_addrmap. */ | |
2698 | ||
2699 | static void | |
ed2dc618 | 2700 | create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
2701 | struct dwarf2_section_info *section) |
2702 | { | |
ed2dc618 | 2703 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 | 2704 | bfd *abfd = objfile->obfd; |
08feed99 | 2705 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 2706 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
927aa2e7 JK |
2707 | |
2708 | auto_obstack temp_obstack; | |
2709 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
2710 | ||
2711 | std::unordered_map<sect_offset, | |
2712 | dwarf2_per_cu_data *, | |
2713 | gdb::hash_enum<sect_offset>> | |
2714 | debug_info_offset_to_per_cu; | |
5989a64e | 2715 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 2716 | { |
927aa2e7 JK |
2717 | const auto insertpair |
2718 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
2719 | if (!insertpair.second) | |
2720 | { | |
2721 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
2722 | "debug_info_offset %s, ignoring .debug_aranges."), |
2723 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
2724 | return; |
2725 | } | |
2726 | } | |
2727 | ||
96b79293 | 2728 | section->read (objfile); |
927aa2e7 JK |
2729 | |
2730 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
2731 | ||
2732 | const gdb_byte *addr = section->buffer; | |
2733 | ||
2734 | while (addr < section->buffer + section->size) | |
2735 | { | |
2736 | const gdb_byte *const entry_addr = addr; | |
2737 | unsigned int bytes_read; | |
2738 | ||
2739 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
2740 | &bytes_read); | |
2741 | addr += bytes_read; | |
2742 | ||
2743 | const gdb_byte *const entry_end = addr + entry_length; | |
2744 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
2745 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
2746 | if (addr + entry_length > section->buffer + section->size) | |
2747 | { | |
47e3f474 | 2748 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2749 | "length %s exceeds section length %s, " |
2750 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2751 | objfile_name (objfile), |
2752 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2753 | plongest (bytes_read + entry_length), |
2754 | pulongest (section->size)); | |
2755 | return; | |
2756 | } | |
2757 | ||
2758 | /* The version number. */ | |
2759 | const uint16_t version = read_2_bytes (abfd, addr); | |
2760 | addr += 2; | |
2761 | if (version != 2) | |
2762 | { | |
47e3f474 | 2763 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2764 | "has unsupported version %d, ignoring .debug_aranges."), |
47e3f474 TV |
2765 | objfile_name (objfile), |
2766 | plongest (entry_addr - section->buffer), version); | |
927aa2e7 JK |
2767 | return; |
2768 | } | |
2769 | ||
2770 | const uint64_t debug_info_offset | |
2771 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
2772 | addr += offset_size; | |
2773 | const auto per_cu_it | |
2774 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
2775 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
2776 | { | |
47e3f474 | 2777 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2778 | "debug_info_offset %s does not exists, " |
2779 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2780 | objfile_name (objfile), |
2781 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2782 | pulongest (debug_info_offset)); |
2783 | return; | |
2784 | } | |
2785 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
2786 | ||
2787 | const uint8_t address_size = *addr++; | |
2788 | if (address_size < 1 || address_size > 8) | |
2789 | { | |
47e3f474 | 2790 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2791 | "address_size %u is invalid, ignoring .debug_aranges."), |
47e3f474 TV |
2792 | objfile_name (objfile), |
2793 | plongest (entry_addr - section->buffer), address_size); | |
927aa2e7 JK |
2794 | return; |
2795 | } | |
2796 | ||
2797 | const uint8_t segment_selector_size = *addr++; | |
2798 | if (segment_selector_size != 0) | |
2799 | { | |
47e3f474 | 2800 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2801 | "segment_selector_size %u is not supported, " |
2802 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2803 | objfile_name (objfile), |
2804 | plongest (entry_addr - section->buffer), | |
927aa2e7 JK |
2805 | segment_selector_size); |
2806 | return; | |
2807 | } | |
2808 | ||
2809 | /* Must pad to an alignment boundary that is twice the address | |
2810 | size. It is undocumented by the DWARF standard but GCC does | |
2811 | use it. */ | |
2812 | for (size_t padding = ((-(addr - section->buffer)) | |
2813 | & (2 * address_size - 1)); | |
2814 | padding > 0; padding--) | |
2815 | if (*addr++ != 0) | |
2816 | { | |
47e3f474 | 2817 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 | 2818 | "padding is not zero, ignoring .debug_aranges."), |
47e3f474 TV |
2819 | objfile_name (objfile), |
2820 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2821 | return; |
2822 | } | |
2823 | ||
2824 | for (;;) | |
2825 | { | |
2826 | if (addr + 2 * address_size > entry_end) | |
2827 | { | |
47e3f474 | 2828 | warning (_("Section .debug_aranges in %s entry at offset %s " |
927aa2e7 JK |
2829 | "address list is not properly terminated, " |
2830 | "ignoring .debug_aranges."), | |
47e3f474 TV |
2831 | objfile_name (objfile), |
2832 | plongest (entry_addr - section->buffer)); | |
927aa2e7 JK |
2833 | return; |
2834 | } | |
2835 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
2836 | dwarf5_byte_order); | |
2837 | addr += address_size; | |
2838 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
2839 | dwarf5_byte_order); | |
2840 | addr += address_size; | |
2841 | if (start == 0 && length == 0) | |
2842 | break; | |
5989a64e | 2843 | if (start == 0 && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
927aa2e7 JK |
2844 | { |
2845 | /* Symbol was eliminated due to a COMDAT group. */ | |
2846 | continue; | |
2847 | } | |
2848 | ULONGEST end = start + length; | |
79748972 TT |
2849 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
2850 | - baseaddr); | |
2851 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
2852 | - baseaddr); | |
927aa2e7 JK |
2853 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
2854 | } | |
2855 | } | |
2856 | ||
d320c2b5 | 2857 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 2858 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
927aa2e7 JK |
2859 | } |
2860 | ||
9291a0cd TT |
2861 | /* Find a slot in the mapped index INDEX for the object named NAME. |
2862 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
2863 | constant pool and return true. If NAME cannot be found, return |
2864 | false. */ | |
2fdf6df6 | 2865 | |
109483d9 | 2866 | static bool |
9291a0cd TT |
2867 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
2868 | offset_type **vec_out) | |
2869 | { | |
0cf03b49 | 2870 | offset_type hash; |
9291a0cd | 2871 | offset_type slot, step; |
559a7a62 | 2872 | int (*cmp) (const char *, const char *); |
9291a0cd | 2873 | |
791afaa2 | 2874 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 2875 | if (current_language->la_language == language_cplus |
45280282 IB |
2876 | || current_language->la_language == language_fortran |
2877 | || current_language->la_language == language_d) | |
0cf03b49 JK |
2878 | { |
2879 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2880 | not contain any. */ | |
a8719064 | 2881 | |
72998fb3 | 2882 | if (strchr (name, '(') != NULL) |
0cf03b49 | 2883 | { |
109483d9 | 2884 | without_params = cp_remove_params (name); |
0cf03b49 | 2885 | |
72998fb3 | 2886 | if (without_params != NULL) |
791afaa2 | 2887 | name = without_params.get (); |
0cf03b49 JK |
2888 | } |
2889 | } | |
2890 | ||
559a7a62 | 2891 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2892 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2893 | simulate our NAME being searched is also lowercased. */ |
2894 | hash = mapped_index_string_hash ((index->version == 4 | |
2895 | && case_sensitivity == case_sensitive_off | |
2896 | ? 5 : index->version), | |
2897 | name); | |
2898 | ||
f00a2de2 PA |
2899 | slot = hash & (index->symbol_table.size () - 1); |
2900 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 2901 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2902 | |
2903 | for (;;) | |
2904 | { | |
9291a0cd | 2905 | const char *str; |
f00a2de2 PA |
2906 | |
2907 | const auto &bucket = index->symbol_table[slot]; | |
2908 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 2909 | return false; |
9291a0cd | 2910 | |
f00a2de2 | 2911 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 2912 | if (!cmp (name, str)) |
9291a0cd TT |
2913 | { |
2914 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 2915 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 2916 | return true; |
9291a0cd TT |
2917 | } |
2918 | ||
f00a2de2 | 2919 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
2920 | } |
2921 | } | |
2922 | ||
4485a1c1 SM |
2923 | /* A helper function that reads the .gdb_index from BUFFER and fills |
2924 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 2925 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
2926 | ok to use deprecated sections. |
2927 | ||
2928 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
2929 | out parameters that are filled in with information about the CU and | |
2930 | TU lists in the section. | |
2931 | ||
4485a1c1 | 2932 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 2933 | |
d33bc52e | 2934 | static bool |
3810f182 | 2935 | read_gdb_index_from_buffer (const char *filename, |
4485a1c1 SM |
2936 | bool deprecated_ok, |
2937 | gdb::array_view<const gdb_byte> buffer, | |
2938 | struct mapped_index *map, | |
2939 | const gdb_byte **cu_list, | |
2940 | offset_type *cu_list_elements, | |
2941 | const gdb_byte **types_list, | |
2942 | offset_type *types_list_elements) | |
2943 | { | |
2944 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 2945 | |
9291a0cd | 2946 | /* Version check. */ |
4485a1c1 | 2947 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2948 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2949 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2950 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 2951 | indices. */ |
831adc1f | 2952 | if (version < 4) |
481860b3 GB |
2953 | { |
2954 | static int warning_printed = 0; | |
2955 | if (!warning_printed) | |
2956 | { | |
2957 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 2958 | filename); |
481860b3 GB |
2959 | warning_printed = 1; |
2960 | } | |
2961 | return 0; | |
2962 | } | |
2963 | /* Index version 4 uses a different hash function than index version | |
2964 | 5 and later. | |
2965 | ||
2966 | Versions earlier than 6 did not emit psymbols for inlined | |
2967 | functions. Using these files will cause GDB not to be able to | |
2968 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
2969 | indices unless the user has done |
2970 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 2971 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
2972 | { |
2973 | static int warning_printed = 0; | |
2974 | if (!warning_printed) | |
2975 | { | |
e615022a DE |
2976 | warning (_("\ |
2977 | Skipping deprecated .gdb_index section in %s.\n\ | |
2978 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
2979 | to use the section anyway."), | |
2ec9a5e0 | 2980 | filename); |
481860b3 GB |
2981 | warning_printed = 1; |
2982 | } | |
2983 | return 0; | |
2984 | } | |
796a7ff8 | 2985 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
2986 | of the TU (for symbols coming from TUs), |
2987 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
2988 | Plus gold-generated indices can have duplicate entries for global symbols, | |
2989 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
2990 | These are just performance bugs, and we can't distinguish gdb-generated | |
2991 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 2992 | |
481860b3 | 2993 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 2994 | longer backward compatible. */ |
796a7ff8 | 2995 | if (version > 8) |
594e8718 | 2996 | return 0; |
9291a0cd | 2997 | |
559a7a62 | 2998 | map->version = version; |
9291a0cd | 2999 | |
4485a1c1 | 3000 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 3001 | |
4485a1c1 | 3002 | int i = 0; |
2ec9a5e0 TT |
3003 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3004 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3005 | / 8); | |
1fd400ff TT |
3006 | ++i; |
3007 | ||
2ec9a5e0 TT |
3008 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3009 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3010 | - MAYBE_SWAP (metadata[i])) | |
3011 | / 8); | |
987d643c | 3012 | ++i; |
1fd400ff | 3013 | |
f00a2de2 PA |
3014 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3015 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3016 | map->address_table | |
3017 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3018 | ++i; |
3019 | ||
f00a2de2 PA |
3020 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3021 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3022 | map->symbol_table | |
3023 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3024 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3025 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3026 | |
f00a2de2 | 3027 | ++i; |
f9d83a0b | 3028 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3029 | |
2ec9a5e0 TT |
3030 | return 1; |
3031 | } | |
3032 | ||
4485a1c1 SM |
3033 | /* Callback types for dwarf2_read_gdb_index. */ |
3034 | ||
3035 | typedef gdb::function_view | |
5989a64e | 3036 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_bfd *)> |
4485a1c1 SM |
3037 | get_gdb_index_contents_ftype; |
3038 | typedef gdb::function_view | |
3039 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3040 | get_gdb_index_contents_dwz_ftype; | |
3041 | ||
927aa2e7 | 3042 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3043 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3044 | ||
3045 | static int | |
4485a1c1 SM |
3046 | dwarf2_read_gdb_index |
3047 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
3048 | get_gdb_index_contents_ftype get_gdb_index_contents, | |
3049 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3050 | { |
2ec9a5e0 TT |
3051 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3052 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3053 | struct dwz_file *dwz; |
12359b5e | 3054 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ec9a5e0 | 3055 | |
4485a1c1 | 3056 | gdb::array_view<const gdb_byte> main_index_contents |
5989a64e | 3057 | = get_gdb_index_contents (objfile, dwarf2_per_objfile->per_bfd); |
4485a1c1 SM |
3058 | |
3059 | if (main_index_contents.empty ()) | |
3060 | return 0; | |
3061 | ||
3063847f | 3062 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
3810f182 | 3063 | if (!read_gdb_index_from_buffer (objfile_name (objfile), |
4485a1c1 SM |
3064 | use_deprecated_index_sections, |
3065 | main_index_contents, map.get (), &cu_list, | |
3066 | &cu_list_elements, &types_list, | |
3067 | &types_list_elements)) | |
2ec9a5e0 TT |
3068 | return 0; |
3069 | ||
0fefef59 | 3070 | /* Don't use the index if it's empty. */ |
3063847f | 3071 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3072 | return 0; |
3073 | ||
2ec9a5e0 TT |
3074 | /* If there is a .dwz file, read it so we can get its CU list as |
3075 | well. */ | |
c3699833 | 3076 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile->per_bfd); |
4db1a1dc | 3077 | if (dwz != NULL) |
2ec9a5e0 | 3078 | { |
2ec9a5e0 TT |
3079 | struct mapped_index dwz_map; |
3080 | const gdb_byte *dwz_types_ignore; | |
3081 | offset_type dwz_types_elements_ignore; | |
3082 | ||
4485a1c1 SM |
3083 | gdb::array_view<const gdb_byte> dwz_index_content |
3084 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3085 | ||
3086 | if (dwz_index_content.empty ()) | |
3087 | return 0; | |
3088 | ||
3810f182 | 3089 | if (!read_gdb_index_from_buffer (bfd_get_filename (dwz->dwz_bfd.get ()), |
00f93c44 | 3090 | 1, dwz_index_content, &dwz_map, |
4485a1c1 SM |
3091 | &dwz_list, &dwz_list_elements, |
3092 | &dwz_types_ignore, | |
3093 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3094 | { |
3095 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
00f93c44 | 3096 | bfd_get_filename (dwz->dwz_bfd.get ())); |
2ec9a5e0 TT |
3097 | return 0; |
3098 | } | |
3099 | } | |
3100 | ||
12359b5e SM |
3101 | create_cus_from_index (dwarf2_per_objfile, cu_list, cu_list_elements, |
3102 | dwz_list, dwz_list_elements); | |
1fd400ff | 3103 | |
8b70b953 TT |
3104 | if (types_list_elements) |
3105 | { | |
8b70b953 TT |
3106 | /* We can only handle a single .debug_types when we have an |
3107 | index. */ | |
5989a64e | 3108 | if (dwarf2_per_objfile->per_bfd->types.size () != 1) |
8b70b953 TT |
3109 | return 0; |
3110 | ||
5989a64e | 3111 | dwarf2_section_info *section = &dwarf2_per_objfile->per_bfd->types[0]; |
8b70b953 | 3112 | |
12359b5e SM |
3113 | create_signatured_type_table_from_index (dwarf2_per_objfile, section, |
3114 | types_list, types_list_elements); | |
8b70b953 | 3115 | } |
9291a0cd | 3116 | |
3063847f | 3117 | create_addrmap_from_index (dwarf2_per_objfile, map.get ()); |
9291a0cd | 3118 | |
5989a64e SM |
3119 | dwarf2_per_objfile->per_bfd->index_table = std::move (map); |
3120 | dwarf2_per_objfile->per_bfd->using_index = 1; | |
3121 | dwarf2_per_objfile->per_bfd->quick_file_names_table = | |
3122 | create_quick_file_names_table (dwarf2_per_objfile->per_bfd->all_comp_units.size ()); | |
9291a0cd TT |
3123 | |
3124 | return 1; | |
3125 | } | |
3126 | ||
dee91e82 | 3127 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3128 | |
dee91e82 DE |
3129 | static void |
3130 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3131 | const gdb_byte *info_ptr, |
3e225074 | 3132 | struct die_info *comp_unit_die) |
9291a0cd | 3133 | { |
dee91e82 | 3134 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3135 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
5e22e966 | 3136 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
094b34ac | 3137 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3138 | struct attribute *attr; |
7b9f3c50 DE |
3139 | void **slot; |
3140 | struct quick_file_names *qfn; | |
9291a0cd | 3141 | |
0186c6a7 DE |
3142 | gdb_assert (! this_cu->is_debug_types); |
3143 | ||
07261596 TT |
3144 | /* Our callers never want to match partial units -- instead they |
3145 | will match the enclosing full CU. */ | |
3146 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3147 | { | |
3148 | this_cu->v.quick->no_file_data = 1; | |
3149 | return; | |
3150 | } | |
3151 | ||
0186c6a7 | 3152 | lh_cu = this_cu; |
7b9f3c50 | 3153 | slot = NULL; |
dee91e82 | 3154 | |
fff8551c | 3155 | line_header_up lh; |
9c541725 | 3156 | sect_offset line_offset {}; |
fff8551c | 3157 | |
dee91e82 | 3158 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
435d3d88 | 3159 | if (attr != nullptr) |
9291a0cd | 3160 | { |
7b9f3c50 DE |
3161 | struct quick_file_names find_entry; |
3162 | ||
9c541725 | 3163 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
3164 | |
3165 | /* We may have already read in this line header (TU line header sharing). | |
3166 | If we have we're done. */ | |
094b34ac | 3167 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3168 | find_entry.hash.line_sect_off = line_offset; |
5989a64e | 3169 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 DE |
3170 | &find_entry, INSERT); |
3171 | if (*slot != NULL) | |
3172 | { | |
9a3c8263 | 3173 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3174 | return; |
7b9f3c50 DE |
3175 | } |
3176 | ||
3019eac3 | 3177 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3178 | } |
3179 | if (lh == NULL) | |
3180 | { | |
094b34ac | 3181 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3182 | return; |
9291a0cd TT |
3183 | } |
3184 | ||
5989a64e | 3185 | qfn = XOBNEW (&dwarf2_per_objfile->per_bfd->obstack, struct quick_file_names); |
094b34ac | 3186 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3187 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3188 | gdb_assert (slot != NULL); |
3189 | *slot = qfn; | |
9291a0cd | 3190 | |
d721ba37 | 3191 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3192 | |
aa391654 TT |
3193 | int offset = 0; |
3194 | if (strcmp (fnd.name, "<unknown>") != 0) | |
3195 | ++offset; | |
3196 | ||
7ba99d21 | 3197 | qfn->num_file_names = offset + lh->file_names_size (); |
8d749320 | 3198 | qfn->file_names = |
5989a64e | 3199 | XOBNEWVEC (&dwarf2_per_objfile->per_bfd->obstack, const char *, |
45940949 | 3200 | qfn->num_file_names); |
aa391654 TT |
3201 | if (offset != 0) |
3202 | qfn->file_names[0] = xstrdup (fnd.name); | |
7ba99d21 | 3203 | for (int i = 0; i < lh->file_names_size (); ++i) |
03075812 TT |
3204 | qfn->file_names[i + offset] = lh->file_full_name (i + 1, |
3205 | fnd.comp_dir).release (); | |
7b9f3c50 | 3206 | qfn->real_names = NULL; |
9291a0cd | 3207 | |
094b34ac | 3208 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3209 | } |
3210 | ||
3211 | /* A helper for the "quick" functions which attempts to read the line | |
3212 | table for THIS_CU. */ | |
3213 | ||
3214 | static struct quick_file_names * | |
e4a48d9d | 3215 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3216 | { |
0186c6a7 DE |
3217 | /* This should never be called for TUs. */ |
3218 | gdb_assert (! this_cu->is_debug_types); | |
3219 | /* Nor type unit groups. */ | |
197400e8 | 3220 | gdb_assert (! this_cu->type_unit_group_p ()); |
f4dc4d17 | 3221 | |
dee91e82 DE |
3222 | if (this_cu->v.quick->file_names != NULL) |
3223 | return this_cu->v.quick->file_names; | |
3224 | /* If we know there is no line data, no point in looking again. */ | |
3225 | if (this_cu->v.quick->no_file_data) | |
3226 | return NULL; | |
3227 | ||
c0ab21c2 TT |
3228 | cutu_reader reader (this_cu); |
3229 | if (!reader.dummy_p) | |
3e225074 | 3230 | dw2_get_file_names_reader (&reader, reader.info_ptr, reader.comp_unit_die); |
dee91e82 DE |
3231 | |
3232 | if (this_cu->v.quick->no_file_data) | |
3233 | return NULL; | |
3234 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3235 | } |
3236 | ||
3237 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3238 | real path for a given file name from the line table. */ |
2fdf6df6 | 3239 | |
9291a0cd | 3240 | static const char * |
45940949 | 3241 | dw2_get_real_path (struct dwarf2_per_objfile *dwarf2_per_objfile, |
7b9f3c50 | 3242 | struct quick_file_names *qfn, int index) |
9291a0cd | 3243 | { |
7b9f3c50 | 3244 | if (qfn->real_names == NULL) |
5989a64e | 3245 | qfn->real_names = OBSTACK_CALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
26f2dc30 | 3246 | qfn->num_file_names, const char *); |
9291a0cd | 3247 | |
7b9f3c50 | 3248 | if (qfn->real_names[index] == NULL) |
14278e1f | 3249 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3250 | |
7b9f3c50 | 3251 | return qfn->real_names[index]; |
9291a0cd TT |
3252 | } |
3253 | ||
3254 | static struct symtab * | |
3255 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3256 | { | |
ed2dc618 SM |
3257 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3258 | = get_dwarf2_per_objfile (objfile); | |
5989a64e | 3259 | dwarf2_per_cu_data *dwarf_cu = dwarf2_per_objfile->per_bfd->all_comp_units.back (); |
97a1449a SM |
3260 | compunit_symtab *cust |
3261 | = dw2_instantiate_symtab (dwarf_cu, dwarf2_per_objfile, false); | |
ae2de4f8 | 3262 | |
43f3e411 DE |
3263 | if (cust == NULL) |
3264 | return NULL; | |
ed2dc618 | 3265 | |
43f3e411 | 3266 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3267 | } |
3268 | ||
7b9f3c50 DE |
3269 | /* Traversal function for dw2_forget_cached_source_info. */ |
3270 | ||
3271 | static int | |
3272 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3273 | { |
7b9f3c50 | 3274 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3275 | |
7b9f3c50 | 3276 | if (file_data->real_names) |
9291a0cd | 3277 | { |
7b9f3c50 | 3278 | int i; |
9291a0cd | 3279 | |
7b9f3c50 | 3280 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3281 | { |
7b9f3c50 DE |
3282 | xfree ((void*) file_data->real_names[i]); |
3283 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3284 | } |
3285 | } | |
7b9f3c50 DE |
3286 | |
3287 | return 1; | |
3288 | } | |
3289 | ||
3290 | static void | |
3291 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3292 | { | |
ed2dc618 SM |
3293 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3294 | = get_dwarf2_per_objfile (objfile); | |
7b9f3c50 | 3295 | |
5989a64e | 3296 | htab_traverse_noresize (dwarf2_per_objfile->per_bfd->quick_file_names_table.get (), |
7b9f3c50 | 3297 | dw2_free_cached_file_names, NULL); |
9291a0cd TT |
3298 | } |
3299 | ||
f8eba3c6 TT |
3300 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3301 | the symtabs and calls the iterator. */ | |
3302 | ||
3303 | static int | |
3304 | dw2_map_expand_apply (struct objfile *objfile, | |
3305 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3306 | const char *name, const char *real_path, |
14bc53a8 | 3307 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3308 | { |
43f3e411 | 3309 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3310 | |
3311 | /* Don't visit already-expanded CUs. */ | |
af758d11 SM |
3312 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
3313 | if (per_objfile->symtab_set_p (per_cu)) | |
f8eba3c6 TT |
3314 | return 0; |
3315 | ||
3316 | /* This may expand more than one symtab, and we want to iterate over | |
3317 | all of them. */ | |
97a1449a | 3318 | dw2_instantiate_symtab (per_cu, per_objfile, false); |
f8eba3c6 | 3319 | |
14bc53a8 PA |
3320 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3321 | last_made, callback); | |
f8eba3c6 TT |
3322 | } |
3323 | ||
3324 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3325 | ||
14bc53a8 PA |
3326 | static bool |
3327 | dw2_map_symtabs_matching_filename | |
3328 | (struct objfile *objfile, const char *name, const char *real_path, | |
3329 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3330 | { |
c011a4f4 | 3331 | const char *name_basename = lbasename (name); |
ed2dc618 SM |
3332 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3333 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 3334 | |
848e3e78 DE |
3335 | /* The rule is CUs specify all the files, including those used by |
3336 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3337 | |
5989a64e | 3338 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3339 | { |
3d7bb9d9 | 3340 | /* We only need to look at symtabs not already expanded. */ |
af758d11 | 3341 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3342 | continue; |
3343 | ||
b76e467d | 3344 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3345 | if (file_data == NULL) |
9291a0cd TT |
3346 | continue; |
3347 | ||
b76e467d | 3348 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3349 | { |
7b9f3c50 | 3350 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3351 | const char *this_real_name; |
9291a0cd | 3352 | |
af529f8f | 3353 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3354 | { |
f5b95b50 | 3355 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3356 | callback)) |
3357 | return true; | |
288e77a7 | 3358 | continue; |
4aac40c8 | 3359 | } |
9291a0cd | 3360 | |
c011a4f4 DE |
3361 | /* Before we invoke realpath, which can get expensive when many |
3362 | files are involved, do a quick comparison of the basenames. */ | |
3363 | if (! basenames_may_differ | |
3364 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3365 | continue; | |
3366 | ||
45940949 TT |
3367 | this_real_name = dw2_get_real_path (dwarf2_per_objfile, |
3368 | file_data, j); | |
da235a7c | 3369 | if (compare_filenames_for_search (this_real_name, name)) |
9291a0cd | 3370 | { |
da235a7c | 3371 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3372 | callback)) |
3373 | return true; | |
288e77a7 | 3374 | continue; |
da235a7c | 3375 | } |
9291a0cd | 3376 | |
da235a7c JK |
3377 | if (real_path != NULL) |
3378 | { | |
af529f8f JK |
3379 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3380 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3381 | if (this_real_name != NULL |
af529f8f | 3382 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3383 | { |
f5b95b50 | 3384 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3385 | callback)) |
3386 | return true; | |
288e77a7 | 3387 | continue; |
9291a0cd TT |
3388 | } |
3389 | } | |
3390 | } | |
3391 | } | |
3392 | ||
14bc53a8 | 3393 | return false; |
9291a0cd TT |
3394 | } |
3395 | ||
da51c347 DE |
3396 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3397 | ||
3398 | struct dw2_symtab_iterator | |
9291a0cd | 3399 | { |
ed2dc618 SM |
3400 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
3401 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
2b79f376 SM |
3402 | /* If set, only look for symbols that match that block. Valid values are |
3403 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
c7f839cb | 3404 | gdb::optional<block_enum> block_index; |
da51c347 DE |
3405 | /* The kind of symbol we're looking for. */ |
3406 | domain_enum domain; | |
3407 | /* The list of CUs from the index entry of the symbol, | |
3408 | or NULL if not found. */ | |
3409 | offset_type *vec; | |
3410 | /* The next element in VEC to look at. */ | |
3411 | int next; | |
3412 | /* The number of elements in VEC, or zero if there is no match. */ | |
3413 | int length; | |
8943b874 DE |
3414 | /* Have we seen a global version of the symbol? |
3415 | If so we can ignore all further global instances. | |
3416 | This is to work around gold/15646, inefficient gold-generated | |
3417 | indices. */ | |
3418 | int global_seen; | |
da51c347 | 3419 | }; |
9291a0cd | 3420 | |
2b79f376 | 3421 | /* Initialize the index symtab iterator ITER. */ |
2fdf6df6 | 3422 | |
9291a0cd | 3423 | static void |
da51c347 | 3424 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
ed2dc618 | 3425 | struct dwarf2_per_objfile *dwarf2_per_objfile, |
c7f839cb | 3426 | gdb::optional<block_enum> block_index, |
da51c347 DE |
3427 | domain_enum domain, |
3428 | const char *name) | |
3429 | { | |
ed2dc618 | 3430 | iter->dwarf2_per_objfile = dwarf2_per_objfile; |
da51c347 DE |
3431 | iter->block_index = block_index; |
3432 | iter->domain = domain; | |
3433 | iter->next = 0; | |
8943b874 | 3434 | iter->global_seen = 0; |
da51c347 | 3435 | |
5989a64e | 3436 | mapped_index *index = dwarf2_per_objfile->per_bfd->index_table.get (); |
ed2dc618 SM |
3437 | |
3438 | /* index is NULL if OBJF_READNOW. */ | |
3439 | if (index != NULL && find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 DE |
3440 | iter->length = MAYBE_SWAP (*iter->vec); |
3441 | else | |
3442 | { | |
3443 | iter->vec = NULL; | |
3444 | iter->length = 0; | |
3445 | } | |
3446 | } | |
3447 | ||
3448 | /* Return the next matching CU or NULL if there are no more. */ | |
3449 | ||
3450 | static struct dwarf2_per_cu_data * | |
3451 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3452 | { | |
ed2dc618 SM |
3453 | struct dwarf2_per_objfile *dwarf2_per_objfile = iter->dwarf2_per_objfile; |
3454 | ||
da51c347 DE |
3455 | for ( ; iter->next < iter->length; ++iter->next) |
3456 | { | |
3457 | offset_type cu_index_and_attrs = | |
3458 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3459 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3460 | gdb_index_symbol_kind symbol_kind = |
3461 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3462 | /* Only check the symbol attributes if they're present. | |
3463 | Indices prior to version 7 don't record them, | |
3464 | and indices >= 7 may elide them for certain symbols | |
3465 | (gold does this). */ | |
3466 | int attrs_valid = | |
5989a64e | 3467 | (dwarf2_per_objfile->per_bfd->index_table->version >= 7 |
da51c347 DE |
3468 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3469 | ||
3190f0c6 | 3470 | /* Don't crash on bad data. */ |
5989a64e SM |
3471 | if (cu_index >= (dwarf2_per_objfile->per_bfd->all_comp_units.size () |
3472 | + dwarf2_per_objfile->per_bfd->all_type_units.size ())) | |
3190f0c6 | 3473 | { |
b98664d3 | 3474 | complaint (_(".gdb_index entry has bad CU index" |
4262abfb JK |
3475 | " [in module %s]"), |
3476 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3477 | continue; |
3478 | } | |
3479 | ||
5989a64e | 3480 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->per_bfd->get_cutu (cu_index); |
3190f0c6 | 3481 | |
da51c347 | 3482 | /* Skip if already read in. */ |
af758d11 | 3483 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
da51c347 DE |
3484 | continue; |
3485 | ||
8943b874 DE |
3486 | /* Check static vs global. */ |
3487 | if (attrs_valid) | |
3488 | { | |
2b79f376 SM |
3489 | bool is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); |
3490 | ||
3491 | if (iter->block_index.has_value ()) | |
3492 | { | |
3493 | bool want_static = *iter->block_index == STATIC_BLOCK; | |
3494 | ||
3495 | if (is_static != want_static) | |
3496 | continue; | |
3497 | } | |
3498 | ||
8943b874 DE |
3499 | /* Work around gold/15646. */ |
3500 | if (!is_static && iter->global_seen) | |
3501 | continue; | |
3502 | if (!is_static) | |
3503 | iter->global_seen = 1; | |
3504 | } | |
da51c347 DE |
3505 | |
3506 | /* Only check the symbol's kind if it has one. */ | |
3507 | if (attrs_valid) | |
3508 | { | |
3509 | switch (iter->domain) | |
3510 | { | |
3511 | case VAR_DOMAIN: | |
3512 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3513 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3514 | /* Some types are also in VAR_DOMAIN. */ | |
3515 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3516 | continue; | |
3517 | break; | |
3518 | case STRUCT_DOMAIN: | |
3519 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3520 | continue; | |
3521 | break; | |
3522 | case LABEL_DOMAIN: | |
3523 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3524 | continue; | |
3525 | break; | |
59c35742 AB |
3526 | case MODULE_DOMAIN: |
3527 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3528 | continue; | |
3529 | break; | |
da51c347 DE |
3530 | default: |
3531 | break; | |
3532 | } | |
3533 | } | |
3534 | ||
3535 | ++iter->next; | |
3536 | return per_cu; | |
3537 | } | |
3538 | ||
3539 | return NULL; | |
3540 | } | |
3541 | ||
43f3e411 | 3542 | static struct compunit_symtab * |
c7f839cb | 3543 | dw2_lookup_symbol (struct objfile *objfile, block_enum block_index, |
da51c347 | 3544 | const char *name, domain_enum domain) |
9291a0cd | 3545 | { |
43f3e411 | 3546 | struct compunit_symtab *stab_best = NULL; |
ed2dc618 SM |
3547 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3548 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 3549 | |
b5ec771e PA |
3550 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
3551 | ||
ed2dc618 SM |
3552 | struct dw2_symtab_iterator iter; |
3553 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3554 | |
2b79f376 | 3555 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, block_index, domain, name); |
9291a0cd | 3556 | |
ed2dc618 SM |
3557 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
3558 | { | |
3559 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a SM |
3560 | struct compunit_symtab *stab |
3561 | = dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); | |
ed2dc618 | 3562 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 3563 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 3564 | |
ed2dc618 SM |
3565 | sym = block_find_symbol (block, name, domain, |
3566 | block_find_non_opaque_type_preferred, | |
3567 | &with_opaque); | |
b2e2f908 | 3568 | |
ed2dc618 SM |
3569 | /* Some caution must be observed with overloaded functions |
3570 | and methods, since the index will not contain any overload | |
3571 | information (but NAME might contain it). */ | |
da51c347 | 3572 | |
ed2dc618 SM |
3573 | if (sym != NULL |
3574 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
3575 | return stab; | |
3576 | if (with_opaque != NULL | |
3577 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
3578 | stab_best = stab; | |
da51c347 | 3579 | |
ed2dc618 | 3580 | /* Keep looking through other CUs. */ |
9291a0cd | 3581 | } |
9291a0cd | 3582 | |
da51c347 | 3583 | return stab_best; |
9291a0cd TT |
3584 | } |
3585 | ||
3586 | static void | |
3587 | dw2_print_stats (struct objfile *objfile) | |
3588 | { | |
ed2dc618 SM |
3589 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3590 | = get_dwarf2_per_objfile (objfile); | |
5989a64e SM |
3591 | int total = (dwarf2_per_objfile->per_bfd->all_comp_units.size () |
3592 | + dwarf2_per_objfile->per_bfd->all_type_units.size ()); | |
ed2dc618 | 3593 | int count = 0; |
9291a0cd | 3594 | |
ed2dc618 | 3595 | for (int i = 0; i < total; ++i) |
9291a0cd | 3596 | { |
5989a64e | 3597 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3598 | |
af758d11 | 3599 | if (!dwarf2_per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3600 | ++count; |
3601 | } | |
e4a48d9d | 3602 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3603 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3604 | } | |
3605 | ||
779bd270 DE |
3606 | /* This dumps minimal information about the index. |
3607 | It is called via "mt print objfiles". | |
3608 | One use is to verify .gdb_index has been loaded by the | |
3609 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3610 | ||
9291a0cd TT |
3611 | static void |
3612 | dw2_dump (struct objfile *objfile) | |
3613 | { | |
ed2dc618 SM |
3614 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3615 | = get_dwarf2_per_objfile (objfile); | |
3616 | ||
5989a64e | 3617 | gdb_assert (dwarf2_per_objfile->per_bfd->using_index); |
779bd270 | 3618 | printf_filtered (".gdb_index:"); |
5989a64e | 3619 | if (dwarf2_per_objfile->per_bfd->index_table != NULL) |
779bd270 DE |
3620 | { |
3621 | printf_filtered (" version %d\n", | |
5989a64e | 3622 | dwarf2_per_objfile->per_bfd->index_table->version); |
779bd270 DE |
3623 | } |
3624 | else | |
3625 | printf_filtered (" faked for \"readnow\"\n"); | |
3626 | printf_filtered ("\n"); | |
9291a0cd TT |
3627 | } |
3628 | ||
9291a0cd TT |
3629 | static void |
3630 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3631 | const char *func_name) | |
3632 | { | |
ed2dc618 SM |
3633 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3634 | = get_dwarf2_per_objfile (objfile); | |
da51c347 | 3635 | |
ed2dc618 SM |
3636 | struct dw2_symtab_iterator iter; |
3637 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 3638 | |
2b79f376 | 3639 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, {}, VAR_DOMAIN, func_name); |
da51c347 | 3640 | |
ed2dc618 | 3641 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
97a1449a | 3642 | dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); |
da51c347 | 3643 | |
9291a0cd TT |
3644 | } |
3645 | ||
3646 | static void | |
3647 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3648 | { | |
ed2dc618 SM |
3649 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3650 | = get_dwarf2_per_objfile (objfile); | |
5989a64e SM |
3651 | int total_units = (dwarf2_per_objfile->per_bfd->all_comp_units.size () |
3652 | + dwarf2_per_objfile->per_bfd->all_type_units.size ()); | |
9291a0cd | 3653 | |
ed2dc618 | 3654 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 3655 | { |
5989a64e | 3656 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 3657 | |
58f0c718 TT |
3658 | /* We don't want to directly expand a partial CU, because if we |
3659 | read it with the wrong language, then assertion failures can | |
3660 | be triggered later on. See PR symtab/23010. So, tell | |
3661 | dw2_instantiate_symtab to skip partial CUs -- any important | |
3662 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
97a1449a | 3663 | dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, true); |
9291a0cd TT |
3664 | } |
3665 | } | |
3666 | ||
3667 | static void | |
652a8996 JK |
3668 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3669 | const char *fullname) | |
9291a0cd | 3670 | { |
ed2dc618 SM |
3671 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3672 | = get_dwarf2_per_objfile (objfile); | |
d4637a04 DE |
3673 | |
3674 | /* We don't need to consider type units here. | |
3675 | This is only called for examining code, e.g. expand_line_sal. | |
3676 | There can be an order of magnitude (or more) more type units | |
3677 | than comp units, and we avoid them if we can. */ | |
3678 | ||
5989a64e | 3679 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
9291a0cd | 3680 | { |
3d7bb9d9 | 3681 | /* We only need to look at symtabs not already expanded. */ |
af758d11 | 3682 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
9291a0cd TT |
3683 | continue; |
3684 | ||
b76e467d | 3685 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3686 | if (file_data == NULL) |
9291a0cd TT |
3687 | continue; |
3688 | ||
b76e467d | 3689 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3690 | { |
652a8996 JK |
3691 | const char *this_fullname = file_data->file_names[j]; |
3692 | ||
3693 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3694 | { |
97a1449a | 3695 | dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); |
9291a0cd TT |
3696 | break; |
3697 | } | |
3698 | } | |
3699 | } | |
3700 | } | |
3701 | ||
9a0bacfb TV |
3702 | static void |
3703 | dw2_expand_symtabs_matching_symbol | |
3704 | (mapped_index_base &index, | |
3705 | const lookup_name_info &lookup_name_in, | |
3706 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
3707 | enum search_domain kind, | |
3708 | gdb::function_view<bool (offset_type)> match_callback); | |
3709 | ||
3710 | static void | |
3711 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
3712 | (dwarf2_per_cu_data *per_cu, |
3713 | dwarf2_per_objfile *per_objfile, | |
9a0bacfb TV |
3714 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
3715 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify); | |
3716 | ||
9291a0cd | 3717 | static void |
199b4314 TT |
3718 | dw2_map_matching_symbols |
3719 | (struct objfile *objfile, | |
b054970d | 3720 | const lookup_name_info &name, domain_enum domain, |
199b4314 TT |
3721 | int global, |
3722 | gdb::function_view<symbol_found_callback_ftype> callback, | |
199b4314 | 3723 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 3724 | { |
1aa98955 TV |
3725 | /* Used for Ada. */ |
3726 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
3727 | = get_dwarf2_per_objfile (objfile); | |
3728 | ||
9a0bacfb TV |
3729 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
3730 | ||
5989a64e | 3731 | if (dwarf2_per_objfile->per_bfd->index_table != nullptr) |
1aa98955 TV |
3732 | { |
3733 | /* Ada currently doesn't support .gdb_index (see PR24713). We can get | |
3734 | here though if the current language is Ada for a non-Ada objfile | |
9a0bacfb | 3735 | using GNU index. */ |
5989a64e | 3736 | mapped_index &index = *dwarf2_per_objfile->per_bfd->index_table; |
1aa98955 | 3737 | |
9a0bacfb TV |
3738 | const char *match_name = name.ada ().lookup_name ().c_str (); |
3739 | auto matcher = [&] (const char *symname) | |
3740 | { | |
3741 | if (ordered_compare == nullptr) | |
3742 | return true; | |
3743 | return ordered_compare (symname, match_name) == 0; | |
3744 | }; | |
3745 | ||
3746 | dw2_expand_symtabs_matching_symbol (index, name, matcher, ALL_DOMAIN, | |
3747 | [&] (offset_type namei) | |
3748 | { | |
3749 | struct dw2_symtab_iterator iter; | |
3750 | struct dwarf2_per_cu_data *per_cu; | |
3751 | ||
3752 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, block_kind, domain, | |
3753 | match_name); | |
3754 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) | |
97a1449a SM |
3755 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, nullptr, |
3756 | nullptr); | |
9a0bacfb TV |
3757 | return true; |
3758 | }); | |
3759 | } | |
3760 | else | |
3761 | { | |
3762 | /* We have -readnow: no .gdb_index, but no partial symtabs either. So, | |
3763 | proceed assuming all symtabs have been read in. */ | |
3764 | } | |
1aa98955 TV |
3765 | |
3766 | for (compunit_symtab *cust : objfile->compunits ()) | |
3767 | { | |
3768 | const struct block *block; | |
3769 | ||
3770 | if (cust == NULL) | |
3771 | continue; | |
3772 | block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust), block_kind); | |
3773 | if (!iterate_over_symbols_terminated (block, name, | |
3774 | domain, callback)) | |
3775 | return; | |
3776 | } | |
9291a0cd TT |
3777 | } |
3778 | ||
e1ef7d7a PA |
3779 | /* Starting from a search name, return the string that finds the upper |
3780 | bound of all strings that start with SEARCH_NAME in a sorted name | |
3781 | list. Returns the empty string to indicate that the upper bound is | |
3782 | the end of the list. */ | |
3783 | ||
3784 | static std::string | |
3785 | make_sort_after_prefix_name (const char *search_name) | |
3786 | { | |
3787 | /* When looking to complete "func", we find the upper bound of all | |
3788 | symbols that start with "func" by looking for where we'd insert | |
3789 | the closest string that would follow "func" in lexicographical | |
3790 | order. Usually, that's "func"-with-last-character-incremented, | |
3791 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
3792 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
3793 | Especially mind the 0xff character, which is a valid character in | |
3794 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
3795 | rule out compilers allowing it in identifiers. Note that | |
3796 | conveniently, strcmp/strcasecmp are specified to compare | |
3797 | characters interpreted as unsigned char. So what we do is treat | |
3798 | the whole string as a base 256 number composed of a sequence of | |
3799 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
3800 | to 0, and carries 1 to the following more-significant position. | |
3801 | If the very first character in SEARCH_NAME ends up incremented | |
3802 | and carries/overflows, then the upper bound is the end of the | |
3803 | list. The string after the empty string is also the empty | |
3804 | string. | |
3805 | ||
3806 | Some examples of this operation: | |
3807 | ||
3808 | SEARCH_NAME => "+1" RESULT | |
3809 | ||
3810 | "abc" => "abd" | |
3811 | "ab\xff" => "ac" | |
3812 | "\xff" "a" "\xff" => "\xff" "b" | |
3813 | "\xff" => "" | |
3814 | "\xff\xff" => "" | |
3815 | "" => "" | |
3816 | ||
3817 | Then, with these symbols for example: | |
3818 | ||
3819 | func | |
3820 | func1 | |
3821 | fund | |
3822 | ||
3823 | completing "func" looks for symbols between "func" and | |
3824 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
3825 | which finds "func" and "func1", but not "fund". | |
3826 | ||
3827 | And with: | |
3828 | ||
3829 | funcÿ (Latin1 'ÿ' [0xff]) | |
3830 | funcÿ1 | |
3831 | fund | |
3832 | ||
3833 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
3834 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
3835 | ||
3836 | And with: | |
3837 | ||
3838 | ÿÿ (Latin1 'ÿ' [0xff]) | |
3839 | ÿÿ1 | |
3840 | ||
3841 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
3842 | the end of the list. | |
3843 | */ | |
3844 | std::string after = search_name; | |
3845 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
3846 | after.pop_back (); | |
3847 | if (!after.empty ()) | |
3848 | after.back () = (unsigned char) after.back () + 1; | |
3849 | return after; | |
3850 | } | |
3851 | ||
5c58de74 | 3852 | /* See declaration. */ |
61d96d7e | 3853 | |
5c58de74 PA |
3854 | std::pair<std::vector<name_component>::const_iterator, |
3855 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 3856 | mapped_index_base::find_name_components_bounds |
3b00ef10 | 3857 | (const lookup_name_info &lookup_name_without_params, language lang) const |
3f563c84 | 3858 | { |
5c58de74 PA |
3859 | auto *name_cmp |
3860 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 | 3861 | |
3b00ef10 | 3862 | const char *lang_name |
e0802d59 | 3863 | = lookup_name_without_params.language_lookup_name (lang); |
9291a0cd | 3864 | |
3f563c84 PA |
3865 | /* Comparison function object for lower_bound that matches against a |
3866 | given symbol name. */ | |
3867 | auto lookup_compare_lower = [&] (const name_component &elem, | |
3868 | const char *name) | |
3869 | { | |
5c58de74 | 3870 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
3871 | const char *elem_name = elem_qualified + elem.name_offset; |
3872 | return name_cmp (elem_name, name) < 0; | |
3873 | }; | |
3874 | ||
3875 | /* Comparison function object for upper_bound that matches against a | |
3876 | given symbol name. */ | |
3877 | auto lookup_compare_upper = [&] (const char *name, | |
3878 | const name_component &elem) | |
3879 | { | |
5c58de74 | 3880 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
3881 | const char *elem_name = elem_qualified + elem.name_offset; |
3882 | return name_cmp (name, elem_name) < 0; | |
3883 | }; | |
3884 | ||
5c58de74 PA |
3885 | auto begin = this->name_components.begin (); |
3886 | auto end = this->name_components.end (); | |
3f563c84 PA |
3887 | |
3888 | /* Find the lower bound. */ | |
3889 | auto lower = [&] () | |
3890 | { | |
3b00ef10 | 3891 | if (lookup_name_without_params.completion_mode () && lang_name[0] == '\0') |
3f563c84 PA |
3892 | return begin; |
3893 | else | |
3b00ef10 | 3894 | return std::lower_bound (begin, end, lang_name, lookup_compare_lower); |
3f563c84 PA |
3895 | } (); |
3896 | ||
3897 | /* Find the upper bound. */ | |
3898 | auto upper = [&] () | |
3899 | { | |
5c58de74 | 3900 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 3901 | { |
e1ef7d7a PA |
3902 | /* In completion mode, we want UPPER to point past all |
3903 | symbols names that have the same prefix. I.e., with | |
3904 | these symbols, and completing "func": | |
3905 | ||
3906 | function << lower bound | |
3907 | function1 | |
3908 | other_function << upper bound | |
3909 | ||
3910 | We find the upper bound by looking for the insertion | |
3911 | point of "func"-with-last-character-incremented, | |
3912 | i.e. "fund". */ | |
3b00ef10 | 3913 | std::string after = make_sort_after_prefix_name (lang_name); |
e1ef7d7a | 3914 | if (after.empty ()) |
3f563c84 | 3915 | return end; |
e6b2f5ef PA |
3916 | return std::lower_bound (lower, end, after.c_str (), |
3917 | lookup_compare_lower); | |
3f563c84 PA |
3918 | } |
3919 | else | |
3b00ef10 | 3920 | return std::upper_bound (lower, end, lang_name, lookup_compare_upper); |
3f563c84 PA |
3921 | } (); |
3922 | ||
5c58de74 PA |
3923 | return {lower, upper}; |
3924 | } | |
3925 | ||
3926 | /* See declaration. */ | |
3927 | ||
3928 | void | |
44ed8f3e | 3929 | mapped_index_base::build_name_components () |
5c58de74 PA |
3930 | { |
3931 | if (!this->name_components.empty ()) | |
3932 | return; | |
3933 | ||
3934 | this->name_components_casing = case_sensitivity; | |
3935 | auto *name_cmp | |
3936 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3937 | ||
3938 | /* The code below only knows how to break apart components of C++ | |
3939 | symbol names (and other languages that use '::' as | |
3b00ef10 | 3940 | namespace/module separator) and Ada symbol names. */ |
44ed8f3e PA |
3941 | auto count = this->symbol_name_count (); |
3942 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 3943 | { |
44ed8f3e | 3944 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
3945 | continue; |
3946 | ||
3947 | const char *name = this->symbol_name_at (idx); | |
3948 | ||
3949 | /* Add each name component to the name component table. */ | |
3950 | unsigned int previous_len = 0; | |
3b00ef10 TT |
3951 | |
3952 | if (strstr (name, "::") != nullptr) | |
3953 | { | |
3954 | for (unsigned int current_len = cp_find_first_component (name); | |
3955 | name[current_len] != '\0'; | |
3956 | current_len += cp_find_first_component (name + current_len)) | |
3957 | { | |
3958 | gdb_assert (name[current_len] == ':'); | |
3959 | this->name_components.push_back ({previous_len, idx}); | |
3960 | /* Skip the '::'. */ | |
3961 | current_len += 2; | |
3962 | previous_len = current_len; | |
3963 | } | |
3964 | } | |
3965 | else | |
5c58de74 | 3966 | { |
3b00ef10 TT |
3967 | /* Handle the Ada encoded (aka mangled) form here. */ |
3968 | for (const char *iter = strstr (name, "__"); | |
3969 | iter != nullptr; | |
3970 | iter = strstr (iter, "__")) | |
3971 | { | |
3972 | this->name_components.push_back ({previous_len, idx}); | |
3973 | iter += 2; | |
3974 | previous_len = iter - name; | |
3975 | } | |
5c58de74 | 3976 | } |
3b00ef10 | 3977 | |
5c58de74 PA |
3978 | this->name_components.push_back ({previous_len, idx}); |
3979 | } | |
3980 | ||
3981 | /* Sort name_components elements by name. */ | |
3982 | auto name_comp_compare = [&] (const name_component &left, | |
3983 | const name_component &right) | |
3984 | { | |
3985 | const char *left_qualified = this->symbol_name_at (left.idx); | |
3986 | const char *right_qualified = this->symbol_name_at (right.idx); | |
3987 | ||
3988 | const char *left_name = left_qualified + left.name_offset; | |
3989 | const char *right_name = right_qualified + right.name_offset; | |
3990 | ||
3991 | return name_cmp (left_name, right_name) < 0; | |
3992 | }; | |
3993 | ||
3994 | std::sort (this->name_components.begin (), | |
3995 | this->name_components.end (), | |
3996 | name_comp_compare); | |
3997 | } | |
3998 | ||
3999 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4000 | mapped_index_base instead of the containing objfile. This is split |
4001 | to a separate function in order to be able to unit test the | |
4002 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4003 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4004 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4005 | |
4006 | static void | |
4007 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4008 | (mapped_index_base &index, |
5c58de74 PA |
4009 | const lookup_name_info &lookup_name_in, |
4010 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4011 | enum search_domain kind, | |
3b00ef10 | 4012 | gdb::function_view<bool (offset_type)> match_callback) |
5c58de74 PA |
4013 | { |
4014 | lookup_name_info lookup_name_without_params | |
4015 | = lookup_name_in.make_ignore_params (); | |
5c58de74 PA |
4016 | |
4017 | /* Build the symbol name component sorted vector, if we haven't | |
4018 | yet. */ | |
4019 | index.build_name_components (); | |
4020 | ||
3f563c84 PA |
4021 | /* The same symbol may appear more than once in the range though. |
4022 | E.g., if we're looking for symbols that complete "w", and we have | |
4023 | a symbol named "w1::w2", we'll find the two name components for | |
4024 | that same symbol in the range. To be sure we only call the | |
4025 | callback once per symbol, we first collect the symbol name | |
4026 | indexes that matched in a temporary vector and ignore | |
4027 | duplicates. */ | |
4028 | std::vector<offset_type> matches; | |
3f563c84 | 4029 | |
3b00ef10 TT |
4030 | struct name_and_matcher |
4031 | { | |
4032 | symbol_name_matcher_ftype *matcher; | |
ecc6c606 | 4033 | const char *name; |
3b00ef10 TT |
4034 | |
4035 | bool operator== (const name_and_matcher &other) const | |
3f563c84 | 4036 | { |
ecc6c606 | 4037 | return matcher == other.matcher && strcmp (name, other.name) == 0; |
3b00ef10 TT |
4038 | } |
4039 | }; | |
4040 | ||
4041 | /* A vector holding all the different symbol name matchers, for all | |
4042 | languages. */ | |
4043 | std::vector<name_and_matcher> matchers; | |
4044 | ||
4045 | for (int i = 0; i < nr_languages; i++) | |
4046 | { | |
4047 | enum language lang_e = (enum language) i; | |
4048 | ||
4049 | const language_defn *lang = language_def (lang_e); | |
4050 | symbol_name_matcher_ftype *name_matcher | |
4051 | = get_symbol_name_matcher (lang, lookup_name_without_params); | |
3f563c84 | 4052 | |
3b00ef10 TT |
4053 | name_and_matcher key { |
4054 | name_matcher, | |
4055 | lookup_name_without_params.language_lookup_name (lang_e) | |
4056 | }; | |
4057 | ||
4058 | /* Don't insert the same comparison routine more than once. | |
4059 | Note that we do this linear walk. This is not a problem in | |
4060 | practice because the number of supported languages is | |
4061 | low. */ | |
4062 | if (std::find (matchers.begin (), matchers.end (), key) | |
4063 | != matchers.end ()) | |
9291a0cd | 4064 | continue; |
3b00ef10 TT |
4065 | matchers.push_back (std::move (key)); |
4066 | ||
4067 | auto bounds | |
4068 | = index.find_name_components_bounds (lookup_name_without_params, | |
4069 | lang_e); | |
4070 | ||
4071 | /* Now for each symbol name in range, check to see if we have a name | |
4072 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4073 | ||
4074 | for (; bounds.first != bounds.second; ++bounds.first) | |
4075 | { | |
4076 | const char *qualified = index.symbol_name_at (bounds.first->idx); | |
4077 | ||
4078 | if (!name_matcher (qualified, lookup_name_without_params, NULL) | |
4079 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
4080 | continue; | |
9291a0cd | 4081 | |
3b00ef10 TT |
4082 | matches.push_back (bounds.first->idx); |
4083 | } | |
3f563c84 PA |
4084 | } |
4085 | ||
4086 | std::sort (matches.begin (), matches.end ()); | |
4087 | ||
4088 | /* Finally call the callback, once per match. */ | |
4089 | ULONGEST prev = -1; | |
4090 | for (offset_type idx : matches) | |
4091 | { | |
4092 | if (prev != idx) | |
4093 | { | |
3b00ef10 TT |
4094 | if (!match_callback (idx)) |
4095 | break; | |
3f563c84 PA |
4096 | prev = idx; |
4097 | } | |
4098 | } | |
4099 | ||
4100 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4101 | (offset_type)-1 are both possible values. */ | |
4102 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4103 | } | |
4104 | ||
c62446b1 PA |
4105 | #if GDB_SELF_TEST |
4106 | ||
4107 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4108 | ||
a3c5fafd PA |
4109 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4110 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4111 | mapped_index_base interface. Builds an index from the symbol list | |
4112 | passed as parameter to the constructor. */ | |
4113 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4114 | { |
4115 | public: | |
a3c5fafd PA |
4116 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4117 | : m_symbol_table (symbols) | |
c62446b1 PA |
4118 | {} |
4119 | ||
a3c5fafd | 4120 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4121 | |
a3c5fafd | 4122 | /* Return the number of names in the symbol table. */ |
632e107b | 4123 | size_t symbol_name_count () const override |
c62446b1 | 4124 | { |
a3c5fafd | 4125 | return m_symbol_table.size (); |
c62446b1 PA |
4126 | } |
4127 | ||
a3c5fafd | 4128 | /* Get the name of the symbol at IDX in the symbol table. */ |
632e107b | 4129 | const char *symbol_name_at (offset_type idx) const override |
a3c5fafd PA |
4130 | { |
4131 | return m_symbol_table[idx]; | |
4132 | } | |
c62446b1 | 4133 | |
a3c5fafd PA |
4134 | private: |
4135 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4136 | }; |
4137 | ||
4138 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4139 | string, to pass to print routines. */ | |
4140 | ||
4141 | static const char * | |
4142 | string_or_null (const char *str) | |
4143 | { | |
4144 | return str != NULL ? str : "<null>"; | |
4145 | } | |
4146 | ||
4147 | /* Check if a lookup_name_info built from | |
4148 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4149 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4150 | matching order. If no match expected, then an empty list is | |
4151 | specified. Returns true on success. On failure prints a warning | |
4152 | indicating the file:line that failed, and returns false. */ | |
4153 | ||
4154 | static bool | |
4155 | check_match (const char *file, int line, | |
4156 | mock_mapped_index &mock_index, | |
4157 | const char *name, symbol_name_match_type match_type, | |
4158 | bool completion_mode, | |
4159 | std::initializer_list<const char *> expected_list) | |
4160 | { | |
4161 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4162 | ||
4163 | bool matched = true; | |
4164 | ||
4165 | auto mismatch = [&] (const char *expected_str, | |
4166 | const char *got) | |
4167 | { | |
4168 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4169 | "expected=\"%s\", got=\"%s\"\n"), | |
4170 | file, line, | |
4171 | (match_type == symbol_name_match_type::FULL | |
4172 | ? "FULL" : "WILD"), | |
4173 | name, string_or_null (expected_str), string_or_null (got)); | |
4174 | matched = false; | |
4175 | }; | |
4176 | ||
4177 | auto expected_it = expected_list.begin (); | |
4178 | auto expected_end = expected_list.end (); | |
4179 | ||
a3c5fafd | 4180 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4181 | NULL, ALL_DOMAIN, |
4182 | [&] (offset_type idx) | |
4183 | { | |
a3c5fafd | 4184 | const char *matched_name = mock_index.symbol_name_at (idx); |
c62446b1 PA |
4185 | const char *expected_str |
4186 | = expected_it == expected_end ? NULL : *expected_it++; | |
4187 | ||
4188 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4189 | mismatch (expected_str, matched_name); | |
3b00ef10 | 4190 | return true; |
c62446b1 PA |
4191 | }); |
4192 | ||
4193 | const char *expected_str | |
4194 | = expected_it == expected_end ? NULL : *expected_it++; | |
4195 | if (expected_str != NULL) | |
4196 | mismatch (expected_str, NULL); | |
4197 | ||
4198 | return matched; | |
4199 | } | |
4200 | ||
4201 | /* The symbols added to the mock mapped_index for testing (in | |
4202 | canonical form). */ | |
4203 | static const char *test_symbols[] = { | |
4204 | "function", | |
4205 | "std::bar", | |
4206 | "std::zfunction", | |
4207 | "std::zfunction2", | |
4208 | "w1::w2", | |
4209 | "ns::foo<char*>", | |
4210 | "ns::foo<int>", | |
4211 | "ns::foo<long>", | |
a20714ff PA |
4212 | "ns2::tmpl<int>::foo2", |
4213 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4214 | |
e1ef7d7a PA |
4215 | /* These are used to check that the increment-last-char in the |
4216 | matching algorithm for completion doesn't match "t1_fund" when | |
4217 | completing "t1_func". */ | |
4218 | "t1_func", | |
4219 | "t1_func1", | |
4220 | "t1_fund", | |
4221 | "t1_fund1", | |
4222 | ||
4223 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4224 | cp-name-parser understands this as a single identifier ("função" | |
4225 | is "function" in PT). */ | |
4226 | u8"u8função", | |
4227 | ||
4228 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4229 | "yfunc\377", | |
4230 | ||
4231 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4232 | "\377", | |
4233 | "\377\377123", | |
4234 | ||
c62446b1 PA |
4235 | /* A name with all sorts of complications. Starts with "z" to make |
4236 | it easier for the completion tests below. */ | |
4237 | #define Z_SYM_NAME \ | |
4238 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4239 | "::tuple<(anonymous namespace)::ui*, " \ | |
4240 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4241 | ||
4242 | Z_SYM_NAME | |
4243 | }; | |
4244 | ||
a3c5fafd PA |
4245 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4246 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4247 | in completion mode. */ | |
5c58de74 PA |
4248 | |
4249 | static bool | |
a3c5fafd | 4250 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 PA |
4251 | const char *search_name, |
4252 | gdb::array_view<const char *> expected_syms) | |
4253 | { | |
4254 | lookup_name_info lookup_name (search_name, | |
4255 | symbol_name_match_type::FULL, true); | |
4256 | ||
3b00ef10 TT |
4257 | auto bounds = index.find_name_components_bounds (lookup_name, |
4258 | language_cplus); | |
5c58de74 PA |
4259 | |
4260 | size_t distance = std::distance (bounds.first, bounds.second); | |
4261 | if (distance != expected_syms.size ()) | |
4262 | return false; | |
4263 | ||
4264 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4265 | { | |
4266 | auto nc_elem = bounds.first + exp_elem; | |
4267 | const char *qualified = index.symbol_name_at (nc_elem->idx); | |
4268 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) | |
4269 | return false; | |
4270 | } | |
4271 | ||
4272 | return true; | |
4273 | } | |
4274 | ||
4275 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4276 | method. */ | |
4277 | ||
c62446b1 | 4278 | static void |
5c58de74 PA |
4279 | test_mapped_index_find_name_component_bounds () |
4280 | { | |
4281 | mock_mapped_index mock_index (test_symbols); | |
4282 | ||
a3c5fafd | 4283 | mock_index.build_name_components (); |
5c58de74 PA |
4284 | |
4285 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4286 | method in completion mode. */ | |
4287 | { | |
4288 | static const char *expected_syms[] = { | |
4289 | "t1_func", | |
4290 | "t1_func1", | |
5c58de74 PA |
4291 | }; |
4292 | ||
a3c5fafd | 4293 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4294 | "t1_func", expected_syms)); |
4295 | } | |
4296 | ||
4297 | /* Check that the increment-last-char in the name matching algorithm | |
4298 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4299 | { | |
4300 | static const char *expected_syms1[] = { | |
4301 | "\377", | |
4302 | "\377\377123", | |
4303 | }; | |
a3c5fafd | 4304 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4305 | "\377", expected_syms1)); |
4306 | ||
4307 | static const char *expected_syms2[] = { | |
4308 | "\377\377123", | |
4309 | }; | |
a3c5fafd | 4310 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4311 | "\377\377", expected_syms2)); |
4312 | } | |
4313 | } | |
4314 | ||
4315 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4316 | ||
4317 | static void | |
4318 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4319 | { |
4320 | mock_mapped_index mock_index (test_symbols); | |
4321 | ||
4322 | /* We let all tests run until the end even if some fails, for debug | |
4323 | convenience. */ | |
4324 | bool any_mismatch = false; | |
4325 | ||
4326 | /* Create the expected symbols list (an initializer_list). Needed | |
4327 | because lists have commas, and we need to pass them to CHECK, | |
4328 | which is a macro. */ | |
4329 | #define EXPECT(...) { __VA_ARGS__ } | |
4330 | ||
4331 | /* Wrapper for check_match that passes down the current | |
4332 | __FILE__/__LINE__. */ | |
4333 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4334 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4335 | mock_index, \ | |
4336 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
4337 | EXPECTED_LIST) | |
4338 | ||
4339 | /* Identity checks. */ | |
4340 | for (const char *sym : test_symbols) | |
4341 | { | |
4342 | /* Should be able to match all existing symbols. */ | |
4343 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4344 | EXPECT (sym)); | |
4345 | ||
4346 | /* Should be able to match all existing symbols with | |
4347 | parameters. */ | |
4348 | std::string with_params = std::string (sym) + "(int)"; | |
4349 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4350 | EXPECT (sym)); | |
4351 | ||
4352 | /* Should be able to match all existing symbols with | |
4353 | parameters and qualifiers. */ | |
4354 | with_params = std::string (sym) + " ( int ) const"; | |
4355 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4356 | EXPECT (sym)); | |
4357 | ||
4358 | /* This should really find sym, but cp-name-parser.y doesn't | |
4359 | know about lvalue/rvalue qualifiers yet. */ | |
4360 | with_params = std::string (sym) + " ( int ) &&"; | |
4361 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4362 | {}); | |
4363 | } | |
4364 | ||
e1ef7d7a PA |
4365 | /* Check that the name matching algorithm for completion doesn't get |
4366 | confused with Latin1 'ÿ' / 0xff. */ | |
4367 | { | |
4368 | static const char str[] = "\377"; | |
4369 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4370 | EXPECT ("\377", "\377\377123")); | |
4371 | } | |
4372 | ||
4373 | /* Check that the increment-last-char in the matching algorithm for | |
4374 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4375 | { | |
4376 | static const char str[] = "t1_func"; | |
4377 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4378 | EXPECT ("t1_func", "t1_func1")); | |
4379 | } | |
4380 | ||
c62446b1 PA |
4381 | /* Check that completion mode works at each prefix of the expected |
4382 | symbol name. */ | |
4383 | { | |
4384 | static const char str[] = "function(int)"; | |
4385 | size_t len = strlen (str); | |
4386 | std::string lookup; | |
4387 | ||
4388 | for (size_t i = 1; i < len; i++) | |
4389 | { | |
4390 | lookup.assign (str, i); | |
4391 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4392 | EXPECT ("function")); | |
4393 | } | |
4394 | } | |
4395 | ||
4396 | /* While "w" is a prefix of both components, the match function | |
4397 | should still only be called once. */ | |
4398 | { | |
4399 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4400 | EXPECT ("w1::w2")); | |
a20714ff PA |
4401 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4402 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4403 | } |
4404 | ||
4405 | /* Same, with a "complicated" symbol. */ | |
4406 | { | |
4407 | static const char str[] = Z_SYM_NAME; | |
4408 | size_t len = strlen (str); | |
4409 | std::string lookup; | |
4410 | ||
4411 | for (size_t i = 1; i < len; i++) | |
4412 | { | |
4413 | lookup.assign (str, i); | |
4414 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4415 | EXPECT (Z_SYM_NAME)); | |
4416 | } | |
4417 | } | |
4418 | ||
4419 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4420 | { | |
4421 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4422 | {}); | |
4423 | } | |
4424 | ||
4425 | /* A complete symbol with parameters matches any overload, since the | |
4426 | index has no overload info. */ | |
4427 | { | |
4428 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4429 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4430 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4431 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4432 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4433 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4434 | } |
4435 | ||
4436 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4437 | template argument list. */ | |
4438 | { | |
4439 | static const char expected[] = "ns::foo<int>"; | |
4440 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4441 | EXPECT (expected)); | |
a20714ff PA |
4442 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4443 | EXPECT (expected)); | |
c62446b1 PA |
4444 | } |
4445 | ||
4446 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4447 | template argument list that includes a pointer. */ | |
4448 | { | |
4449 | static const char expected[] = "ns::foo<char*>"; | |
4450 | /* Try both completion and non-completion modes. */ | |
4451 | static const bool completion_mode[2] = {false, true}; | |
4452 | for (size_t i = 0; i < 2; i++) | |
4453 | { | |
4454 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4455 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4456 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4457 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4458 | |
4459 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4460 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4461 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4462 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4463 | } |
4464 | } | |
4465 | ||
4466 | { | |
4467 | /* Check method qualifiers are ignored. */ | |
4468 | static const char expected[] = "ns::foo<char*>"; | |
4469 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4470 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4471 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4472 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4473 | CHECK_MATCH ("foo < char * > ( int ) const", |
4474 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4475 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4476 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4477 | } |
4478 | ||
4479 | /* Test lookup names that don't match anything. */ | |
4480 | { | |
a20714ff PA |
4481 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4482 | {}); | |
4483 | ||
c62446b1 PA |
4484 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4485 | {}); | |
4486 | } | |
4487 | ||
a20714ff PA |
4488 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4489 | which should not be confused with a parameter list. */ | |
4490 | { | |
4491 | static const char *syms[] = { | |
4492 | "A::B::C", | |
4493 | "B::C", | |
4494 | "C", | |
4495 | "A :: B :: C ( int )", | |
4496 | "B :: C ( int )", | |
4497 | "C ( int )", | |
4498 | }; | |
4499 | ||
4500 | for (const char *s : syms) | |
4501 | { | |
4502 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4503 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4504 | } | |
4505 | } | |
4506 | ||
4507 | { | |
4508 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4509 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4510 | EXPECT (expected)); | |
4511 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4512 | EXPECT (expected)); | |
4513 | } | |
4514 | ||
c62446b1 PA |
4515 | SELF_CHECK (!any_mismatch); |
4516 | ||
4517 | #undef EXPECT | |
4518 | #undef CHECK_MATCH | |
4519 | } | |
4520 | ||
5c58de74 PA |
4521 | static void |
4522 | run_test () | |
4523 | { | |
4524 | test_mapped_index_find_name_component_bounds (); | |
4525 | test_dw2_expand_symtabs_matching_symbol (); | |
4526 | } | |
4527 | ||
c62446b1 PA |
4528 | }} // namespace selftests::dw2_expand_symtabs_matching |
4529 | ||
4530 | #endif /* GDB_SELF_TEST */ | |
4531 | ||
4b514bc8 JK |
4532 | /* If FILE_MATCHER is NULL or if PER_CU has |
4533 | dwarf2_per_cu_quick_data::MARK set (see | |
4534 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4535 | EXPANSION_NOTIFY on it. */ | |
4536 | ||
4537 | static void | |
4538 | dw2_expand_symtabs_matching_one | |
97a1449a SM |
4539 | (dwarf2_per_cu_data *per_cu, |
4540 | dwarf2_per_objfile *per_objfile, | |
4b514bc8 JK |
4541 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4542 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4543 | { | |
4544 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4545 | { | |
af758d11 | 4546 | bool symtab_was_null = !per_objfile->symtab_set_p (per_cu); |
4b514bc8 | 4547 | |
97a1449a SM |
4548 | compunit_symtab *symtab |
4549 | = dw2_instantiate_symtab (per_cu, per_objfile, false); | |
af758d11 | 4550 | gdb_assert (symtab != nullptr); |
4b514bc8 | 4551 | |
af758d11 SM |
4552 | if (expansion_notify != NULL && symtab_was_null) |
4553 | expansion_notify (symtab); | |
4b514bc8 JK |
4554 | } |
4555 | } | |
4556 | ||
3f563c84 PA |
4557 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
4558 | matched, to expand corresponding CUs that were marked. IDX is the | |
4559 | index of the symbol name that matched. */ | |
4560 | ||
4561 | static void | |
4562 | dw2_expand_marked_cus | |
97a1449a | 4563 | (dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, |
3f563c84 PA |
4564 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
4565 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4566 | search_domain kind) | |
4567 | { | |
3f563c84 PA |
4568 | offset_type *vec, vec_len, vec_idx; |
4569 | bool global_seen = false; | |
5989a64e | 4570 | mapped_index &index = *dwarf2_per_objfile->per_bfd->index_table; |
3f563c84 | 4571 | |
61920122 | 4572 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 4573 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
4574 | vec_len = MAYBE_SWAP (vec[0]); |
4575 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
4576 | { | |
61920122 PA |
4577 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
4578 | /* This value is only valid for index versions >= 7. */ | |
4579 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
4580 | gdb_index_symbol_kind symbol_kind = | |
4581 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
4582 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
4583 | /* Only check the symbol attributes if they're present. | |
4584 | Indices prior to version 7 don't record them, | |
4585 | and indices >= 7 may elide them for certain symbols | |
4586 | (gold does this). */ | |
4587 | int attrs_valid = | |
4588 | (index.version >= 7 | |
4589 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
4590 | ||
4591 | /* Work around gold/15646. */ | |
4592 | if (attrs_valid) | |
9291a0cd | 4593 | { |
61920122 PA |
4594 | if (!is_static && global_seen) |
4595 | continue; | |
4596 | if (!is_static) | |
4597 | global_seen = true; | |
4598 | } | |
3190f0c6 | 4599 | |
61920122 PA |
4600 | /* Only check the symbol's kind if it has one. */ |
4601 | if (attrs_valid) | |
4602 | { | |
4603 | switch (kind) | |
8943b874 | 4604 | { |
61920122 PA |
4605 | case VARIABLES_DOMAIN: |
4606 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
4607 | continue; | |
4608 | break; | |
4609 | case FUNCTIONS_DOMAIN: | |
4610 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 4611 | continue; |
61920122 PA |
4612 | break; |
4613 | case TYPES_DOMAIN: | |
4614 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4615 | continue; | |
4616 | break; | |
59c35742 AB |
4617 | case MODULES_DOMAIN: |
4618 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4619 | continue; | |
4620 | break; | |
61920122 PA |
4621 | default: |
4622 | break; | |
8943b874 | 4623 | } |
61920122 | 4624 | } |
8943b874 | 4625 | |
61920122 | 4626 | /* Don't crash on bad data. */ |
5989a64e SM |
4627 | if (cu_index >= (dwarf2_per_objfile->per_bfd->all_comp_units.size () |
4628 | + dwarf2_per_objfile->per_bfd->all_type_units.size ())) | |
61920122 | 4629 | { |
b98664d3 | 4630 | complaint (_(".gdb_index entry has bad CU index" |
ed2dc618 SM |
4631 | " [in module %s]"), |
4632 | objfile_name (dwarf2_per_objfile->objfile)); | |
61920122 PA |
4633 | continue; |
4634 | } | |
4635 | ||
5989a64e | 4636 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->per_bfd->get_cutu (cu_index); |
97a1449a | 4637 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, file_matcher, |
4b514bc8 | 4638 | expansion_notify); |
61920122 PA |
4639 | } |
4640 | } | |
4641 | ||
4b514bc8 JK |
4642 | /* If FILE_MATCHER is non-NULL, set all the |
4643 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
4644 | that match FILE_MATCHER. */ | |
4645 | ||
61920122 | 4646 | static void |
4b514bc8 | 4647 | dw_expand_symtabs_matching_file_matcher |
ed2dc618 SM |
4648 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4649 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) | |
61920122 | 4650 | { |
4b514bc8 | 4651 | if (file_matcher == NULL) |
61920122 PA |
4652 | return; |
4653 | ||
4b514bc8 JK |
4654 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, |
4655 | htab_eq_pointer, | |
4656 | NULL, xcalloc, xfree)); | |
4657 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
4658 | htab_eq_pointer, |
4659 | NULL, xcalloc, xfree)); | |
61920122 | 4660 | |
4b514bc8 JK |
4661 | /* The rule is CUs specify all the files, including those used by |
4662 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 4663 | |
5989a64e | 4664 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4665 | { |
927aa2e7 JK |
4666 | QUIT; |
4667 | ||
4668 | per_cu->v.quick->mark = 0; | |
4669 | ||
4670 | /* We only need to look at symtabs not already expanded. */ | |
af758d11 | 4671 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4672 | continue; |
4673 | ||
b76e467d | 4674 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
4675 | if (file_data == NULL) |
4676 | continue; | |
4677 | ||
4678 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
4679 | continue; | |
4680 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
4681 | { | |
4682 | per_cu->v.quick->mark = 1; | |
4683 | continue; | |
4684 | } | |
4685 | ||
b76e467d | 4686 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
4687 | { |
4688 | const char *this_real_name; | |
4689 | ||
4690 | if (file_matcher (file_data->file_names[j], false)) | |
4691 | { | |
4692 | per_cu->v.quick->mark = 1; | |
4693 | break; | |
4694 | } | |
4695 | ||
4696 | /* Before we invoke realpath, which can get expensive when many | |
4697 | files are involved, do a quick comparison of the basenames. */ | |
4698 | if (!basenames_may_differ | |
4699 | && !file_matcher (lbasename (file_data->file_names[j]), | |
4700 | true)) | |
4701 | continue; | |
4702 | ||
45940949 TT |
4703 | this_real_name = dw2_get_real_path (dwarf2_per_objfile, |
4704 | file_data, j); | |
927aa2e7 JK |
4705 | if (file_matcher (this_real_name, false)) |
4706 | { | |
4707 | per_cu->v.quick->mark = 1; | |
4708 | break; | |
4709 | } | |
4710 | } | |
4711 | ||
b76e467d SM |
4712 | void **slot = htab_find_slot (per_cu->v.quick->mark |
4713 | ? visited_found.get () | |
4714 | : visited_not_found.get (), | |
4715 | file_data, INSERT); | |
927aa2e7 JK |
4716 | *slot = file_data; |
4717 | } | |
4718 | } | |
4719 | ||
4720 | static void | |
4721 | dw2_expand_symtabs_matching | |
4722 | (struct objfile *objfile, | |
4723 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 4724 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
4725 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
4726 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
4727 | enum search_domain kind) | |
4728 | { | |
ed2dc618 SM |
4729 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4730 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
4731 | |
4732 | /* index_table is NULL if OBJF_READNOW. */ | |
5989a64e | 4733 | if (!dwarf2_per_objfile->per_bfd->index_table) |
927aa2e7 JK |
4734 | return; |
4735 | ||
ed2dc618 | 4736 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
927aa2e7 | 4737 | |
c1a66c06 TV |
4738 | if (symbol_matcher == NULL && lookup_name == NULL) |
4739 | { | |
5989a64e | 4740 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
4741 | { |
4742 | QUIT; | |
4743 | ||
97a1449a SM |
4744 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, |
4745 | file_matcher, expansion_notify); | |
c1a66c06 TV |
4746 | } |
4747 | return; | |
4748 | } | |
4749 | ||
5989a64e | 4750 | mapped_index &index = *dwarf2_per_objfile->per_bfd->index_table; |
927aa2e7 | 4751 | |
c1a66c06 | 4752 | dw2_expand_symtabs_matching_symbol (index, *lookup_name, |
927aa2e7 JK |
4753 | symbol_matcher, |
4754 | kind, [&] (offset_type idx) | |
4755 | { | |
ed2dc618 | 4756 | dw2_expand_marked_cus (dwarf2_per_objfile, idx, file_matcher, |
927aa2e7 | 4757 | expansion_notify, kind); |
3b00ef10 | 4758 | return true; |
927aa2e7 JK |
4759 | }); |
4760 | } | |
4761 | ||
4762 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
4763 | symtab. */ | |
4764 | ||
4765 | static struct compunit_symtab * | |
4766 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
4767 | CORE_ADDR pc) | |
4768 | { | |
4769 | int i; | |
4770 | ||
4771 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
4772 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
4773 | return cust; | |
4774 | ||
4775 | if (cust->includes == NULL) | |
4776 | return NULL; | |
4777 | ||
4778 | for (i = 0; cust->includes[i]; ++i) | |
4779 | { | |
4780 | struct compunit_symtab *s = cust->includes[i]; | |
4781 | ||
4782 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
4783 | if (s != NULL) | |
4784 | return s; | |
4785 | } | |
4786 | ||
4787 | return NULL; | |
4788 | } | |
4789 | ||
4790 | static struct compunit_symtab * | |
4791 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
4792 | struct bound_minimal_symbol msymbol, | |
4793 | CORE_ADDR pc, | |
4794 | struct obj_section *section, | |
4795 | int warn_if_readin) | |
4796 | { | |
4797 | struct dwarf2_per_cu_data *data; | |
4798 | struct compunit_symtab *result; | |
4799 | ||
d320c2b5 | 4800 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
4801 | return NULL; |
4802 | ||
b3b3bada | 4803 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
d320c2b5 TT |
4804 | data = (struct dwarf2_per_cu_data *) addrmap_find |
4805 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
4806 | if (!data) |
4807 | return NULL; | |
4808 | ||
af758d11 SM |
4809 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
4810 | if (warn_if_readin && per_objfile->symtab_set_p (data)) | |
927aa2e7 | 4811 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
08feed99 | 4812 | paddress (objfile->arch (), pc)); |
927aa2e7 | 4813 | |
97a1449a SM |
4814 | result = recursively_find_pc_sect_compunit_symtab |
4815 | (dw2_instantiate_symtab (data, per_objfile, false), pc); | |
4816 | ||
927aa2e7 JK |
4817 | gdb_assert (result != NULL); |
4818 | return result; | |
4819 | } | |
4820 | ||
4821 | static void | |
4822 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
4823 | void *data, int need_fullname) | |
4824 | { | |
ed2dc618 SM |
4825 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4826 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 | 4827 | |
5989a64e | 4828 | if (!dwarf2_per_objfile->per_bfd->filenames_cache) |
927aa2e7 | 4829 | { |
5989a64e | 4830 | dwarf2_per_objfile->per_bfd->filenames_cache.emplace (); |
927aa2e7 JK |
4831 | |
4832 | htab_up visited (htab_create_alloc (10, | |
4833 | htab_hash_pointer, htab_eq_pointer, | |
4834 | NULL, xcalloc, xfree)); | |
4835 | ||
4836 | /* The rule is CUs specify all the files, including those used | |
4837 | by any TU, so there's no need to scan TUs here. We can | |
4838 | ignore file names coming from already-expanded CUs. */ | |
4839 | ||
5989a64e | 4840 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4841 | { |
af758d11 | 4842 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4843 | { |
4844 | void **slot = htab_find_slot (visited.get (), | |
4845 | per_cu->v.quick->file_names, | |
4846 | INSERT); | |
4847 | ||
4848 | *slot = per_cu->v.quick->file_names; | |
4849 | } | |
4850 | } | |
4851 | ||
5989a64e | 4852 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
927aa2e7 | 4853 | { |
927aa2e7 | 4854 | /* We only need to look at symtabs not already expanded. */ |
af758d11 | 4855 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
4856 | continue; |
4857 | ||
b76e467d | 4858 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
4859 | if (file_data == NULL) |
4860 | continue; | |
4861 | ||
b76e467d | 4862 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
4863 | if (*slot) |
4864 | { | |
4865 | /* Already visited. */ | |
4866 | continue; | |
4867 | } | |
4868 | *slot = file_data; | |
4869 | ||
4870 | for (int j = 0; j < file_data->num_file_names; ++j) | |
4871 | { | |
4872 | const char *filename = file_data->file_names[j]; | |
5989a64e | 4873 | dwarf2_per_objfile->per_bfd->filenames_cache->seen (filename); |
927aa2e7 JK |
4874 | } |
4875 | } | |
4876 | } | |
4877 | ||
5989a64e | 4878 | dwarf2_per_objfile->per_bfd->filenames_cache->traverse ([&] (const char *filename) |
927aa2e7 JK |
4879 | { |
4880 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
4881 | ||
4882 | if (need_fullname) | |
4883 | this_real_name = gdb_realpath (filename); | |
4884 | (*fun) (filename, this_real_name.get (), data); | |
4885 | }); | |
4886 | } | |
4887 | ||
4888 | static int | |
4889 | dw2_has_symbols (struct objfile *objfile) | |
4890 | { | |
4891 | return 1; | |
4892 | } | |
4893 | ||
4894 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4895 | { | |
4896 | dw2_has_symbols, | |
4897 | dw2_find_last_source_symtab, | |
4898 | dw2_forget_cached_source_info, | |
4899 | dw2_map_symtabs_matching_filename, | |
4900 | dw2_lookup_symbol, | |
d3214198 | 4901 | NULL, |
927aa2e7 JK |
4902 | dw2_print_stats, |
4903 | dw2_dump, | |
927aa2e7 JK |
4904 | dw2_expand_symtabs_for_function, |
4905 | dw2_expand_all_symtabs, | |
4906 | dw2_expand_symtabs_with_fullname, | |
4907 | dw2_map_matching_symbols, | |
4908 | dw2_expand_symtabs_matching, | |
4909 | dw2_find_pc_sect_compunit_symtab, | |
4910 | NULL, | |
4911 | dw2_map_symbol_filenames | |
4912 | }; | |
4913 | ||
4914 | /* DWARF-5 debug_names reader. */ | |
4915 | ||
4916 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
4917 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
4918 | ||
4919 | /* A helper function that reads the .debug_names section in SECTION | |
4920 | and fills in MAP. FILENAME is the name of the file containing the | |
4921 | section; it is used for error reporting. | |
4922 | ||
4923 | Returns true if all went well, false otherwise. */ | |
4924 | ||
4925 | static bool | |
4926 | read_debug_names_from_section (struct objfile *objfile, | |
4927 | const char *filename, | |
4928 | struct dwarf2_section_info *section, | |
4929 | mapped_debug_names &map) | |
4930 | { | |
96b79293 | 4931 | if (section->empty ()) |
927aa2e7 JK |
4932 | return false; |
4933 | ||
4934 | /* Older elfutils strip versions could keep the section in the main | |
4935 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 4936 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
927aa2e7 JK |
4937 | return false; |
4938 | ||
96b79293 | 4939 | section->read (objfile); |
927aa2e7 | 4940 | |
08feed99 | 4941 | map.dwarf5_byte_order = gdbarch_byte_order (objfile->arch ()); |
927aa2e7 JK |
4942 | |
4943 | const gdb_byte *addr = section->buffer; | |
4944 | ||
96b79293 | 4945 | bfd *const abfd = section->get_bfd_owner (); |
927aa2e7 JK |
4946 | |
4947 | unsigned int bytes_read; | |
4948 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
4949 | addr += bytes_read; | |
4950 | ||
4951 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
4952 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
4953 | if (bytes_read + length != section->size) | |
4954 | { | |
4955 | /* There may be multiple per-CU indices. */ | |
4956 | warning (_("Section .debug_names in %s length %s does not match " | |
4957 | "section length %s, ignoring .debug_names."), | |
4958 | filename, plongest (bytes_read + length), | |
4959 | pulongest (section->size)); | |
4960 | return false; | |
4961 | } | |
4962 | ||
4963 | /* The version number. */ | |
4964 | uint16_t version = read_2_bytes (abfd, addr); | |
4965 | addr += 2; | |
4966 | if (version != 5) | |
4967 | { | |
4968 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
4969 | "ignoring .debug_names."), | |
4970 | filename, version); | |
4971 | return false; | |
4972 | } | |
4973 | ||
4974 | /* Padding. */ | |
4975 | uint16_t padding = read_2_bytes (abfd, addr); | |
4976 | addr += 2; | |
4977 | if (padding != 0) | |
4978 | { | |
4979 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
4980 | "ignoring .debug_names."), | |
4981 | filename, padding); | |
4982 | return false; | |
4983 | } | |
4984 | ||
4985 | /* comp_unit_count - The number of CUs in the CU list. */ | |
4986 | map.cu_count = read_4_bytes (abfd, addr); | |
4987 | addr += 4; | |
4988 | ||
4989 | /* local_type_unit_count - The number of TUs in the local TU | |
4990 | list. */ | |
4991 | map.tu_count = read_4_bytes (abfd, addr); | |
4992 | addr += 4; | |
4993 | ||
4994 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
4995 | list. */ | |
4996 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
4997 | addr += 4; | |
4998 | if (foreign_tu_count != 0) | |
4999 | { | |
5000 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5001 | "ignoring .debug_names."), | |
5002 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5003 | return false; | |
5004 | } | |
5005 | ||
5006 | /* bucket_count - The number of hash buckets in the hash lookup | |
5007 | table. */ | |
5008 | map.bucket_count = read_4_bytes (abfd, addr); | |
5009 | addr += 4; | |
5010 | ||
5011 | /* name_count - The number of unique names in the index. */ | |
5012 | map.name_count = read_4_bytes (abfd, addr); | |
5013 | addr += 4; | |
5014 | ||
5015 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5016 | table. */ | |
5017 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5018 | addr += 4; | |
5019 | ||
5020 | /* augmentation_string_size - The size in bytes of the augmentation | |
5021 | string. This value is rounded up to a multiple of 4. */ | |
5022 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5023 | addr += 4; | |
5024 | map.augmentation_is_gdb = ((augmentation_string_size | |
5025 | == sizeof (dwarf5_augmentation)) | |
5026 | && memcmp (addr, dwarf5_augmentation, | |
5027 | sizeof (dwarf5_augmentation)) == 0); | |
5028 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5029 | addr += augmentation_string_size; | |
5030 | ||
5031 | /* List of CUs */ | |
5032 | map.cu_table_reordered = addr; | |
5033 | addr += map.cu_count * map.offset_size; | |
5034 | ||
5035 | /* List of Local TUs */ | |
5036 | map.tu_table_reordered = addr; | |
5037 | addr += map.tu_count * map.offset_size; | |
5038 | ||
5039 | /* Hash Lookup Table */ | |
5040 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5041 | addr += map.bucket_count * 4; | |
5042 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5043 | addr += map.name_count * 4; | |
5044 | ||
5045 | /* Name Table */ | |
5046 | map.name_table_string_offs_reordered = addr; | |
5047 | addr += map.name_count * map.offset_size; | |
5048 | map.name_table_entry_offs_reordered = addr; | |
5049 | addr += map.name_count * map.offset_size; | |
5050 | ||
5051 | const gdb_byte *abbrev_table_start = addr; | |
5052 | for (;;) | |
5053 | { | |
927aa2e7 JK |
5054 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
5055 | addr += bytes_read; | |
5056 | if (index_num == 0) | |
5057 | break; | |
5058 | ||
5059 | const auto insertpair | |
5060 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5061 | if (!insertpair.second) | |
5062 | { | |
5063 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5064 | "ignoring .debug_names."), | |
5065 | filename, pulongest (index_num)); | |
5066 | return false; | |
5067 | } | |
5068 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5069 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5070 | addr += bytes_read; | |
5071 | ||
5072 | for (;;) | |
5073 | { | |
5074 | mapped_debug_names::index_val::attr attr; | |
5075 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5076 | addr += bytes_read; | |
5077 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5078 | addr += bytes_read; | |
5079 | if (attr.form == DW_FORM_implicit_const) | |
5080 | { | |
5081 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5082 | &bytes_read); | |
5083 | addr += bytes_read; | |
5084 | } | |
5085 | if (attr.dw_idx == 0 && attr.form == 0) | |
5086 | break; | |
5087 | indexval.attr_vec.push_back (std::move (attr)); | |
5088 | } | |
5089 | } | |
5090 | if (addr != abbrev_table_start + abbrev_table_size) | |
5091 | { | |
5092 | warning (_("Section .debug_names in %s has abbreviation_table " | |
47e3f474 TV |
5093 | "of size %s vs. written as %u, ignoring .debug_names."), |
5094 | filename, plongest (addr - abbrev_table_start), | |
5095 | abbrev_table_size); | |
927aa2e7 JK |
5096 | return false; |
5097 | } | |
5098 | map.entry_pool = addr; | |
5099 | ||
5100 | return true; | |
5101 | } | |
5102 | ||
5103 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5104 | list. */ | |
5105 | ||
5106 | static void | |
ed2dc618 | 5107 | create_cus_from_debug_names_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5108 | const mapped_debug_names &map, |
5109 | dwarf2_section_info §ion, | |
b76e467d | 5110 | bool is_dwz) |
927aa2e7 | 5111 | { |
3ee6bb11 TV |
5112 | if (!map.augmentation_is_gdb) |
5113 | { | |
5114 | for (uint32_t i = 0; i < map.cu_count; ++i) | |
5115 | { | |
5116 | sect_offset sect_off | |
5117 | = (sect_offset) (extract_unsigned_integer | |
5118 | (map.cu_table_reordered + i * map.offset_size, | |
5119 | map.offset_size, | |
5120 | map.dwarf5_byte_order)); | |
5121 | /* We don't know the length of the CU, because the CU list in a | |
5122 | .debug_names index can be incomplete, so we can't use the start of | |
5123 | the next CU as end of this CU. We create the CUs here with length 0, | |
5124 | and in cutu_reader::cutu_reader we'll fill in the actual length. */ | |
5125 | dwarf2_per_cu_data *per_cu | |
5126 | = create_cu_from_index_list (dwarf2_per_objfile, §ion, is_dwz, | |
5127 | sect_off, 0); | |
5989a64e | 5128 | dwarf2_per_objfile->per_bfd->all_comp_units.push_back (per_cu); |
3ee6bb11 TV |
5129 | } |
5130 | } | |
5131 | ||
927aa2e7 JK |
5132 | sect_offset sect_off_prev; |
5133 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5134 | { | |
5135 | sect_offset sect_off_next; | |
5136 | if (i < map.cu_count) | |
5137 | { | |
5138 | sect_off_next | |
5139 | = (sect_offset) (extract_unsigned_integer | |
5140 | (map.cu_table_reordered + i * map.offset_size, | |
5141 | map.offset_size, | |
5142 | map.dwarf5_byte_order)); | |
5143 | } | |
5144 | else | |
5145 | sect_off_next = (sect_offset) section.size; | |
5146 | if (i >= 1) | |
5147 | { | |
5148 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5149 | dwarf2_per_cu_data *per_cu |
ed2dc618 | 5150 | = create_cu_from_index_list (dwarf2_per_objfile, §ion, is_dwz, |
927aa2e7 | 5151 | sect_off_prev, length); |
5989a64e | 5152 | dwarf2_per_objfile->per_bfd->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5153 | } |
5154 | sect_off_prev = sect_off_next; | |
5155 | } | |
5156 | } | |
5157 | ||
5158 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5159 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5160 | |
5161 | static void | |
ed2dc618 | 5162 | create_cus_from_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5163 | const mapped_debug_names &map, |
5164 | const mapped_debug_names &dwz_map) | |
5165 | { | |
5989a64e SM |
5166 | gdb_assert (dwarf2_per_objfile->per_bfd->all_comp_units.empty ()); |
5167 | dwarf2_per_objfile->per_bfd->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5168 | |
ed2dc618 | 5169 | create_cus_from_debug_names_list (dwarf2_per_objfile, map, |
5989a64e | 5170 | dwarf2_per_objfile->per_bfd->info, |
b76e467d | 5171 | false /* is_dwz */); |
927aa2e7 JK |
5172 | |
5173 | if (dwz_map.cu_count == 0) | |
5174 | return; | |
5175 | ||
c3699833 | 5176 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile->per_bfd); |
ed2dc618 | 5177 | create_cus_from_debug_names_list (dwarf2_per_objfile, dwz_map, dwz->info, |
b76e467d | 5178 | true /* is_dwz */); |
927aa2e7 JK |
5179 | } |
5180 | ||
5181 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5182 | elements of all the CUs and return true. Otherwise, return false. */ | |
5183 | ||
5184 | static bool | |
ed2dc618 | 5185 | dwarf2_read_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile) |
927aa2e7 | 5186 | { |
22ca247e TT |
5187 | std::unique_ptr<mapped_debug_names> map |
5188 | (new mapped_debug_names (dwarf2_per_objfile)); | |
ed2dc618 SM |
5189 | mapped_debug_names dwz_map (dwarf2_per_objfile); |
5190 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
927aa2e7 JK |
5191 | |
5192 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
5989a64e | 5193 | &dwarf2_per_objfile->per_bfd->debug_names, |
22ca247e | 5194 | *map)) |
927aa2e7 JK |
5195 | return false; |
5196 | ||
5197 | /* Don't use the index if it's empty. */ | |
22ca247e | 5198 | if (map->name_count == 0) |
927aa2e7 JK |
5199 | return false; |
5200 | ||
5201 | /* If there is a .dwz file, read it so we can get its CU list as | |
5202 | well. */ | |
c3699833 | 5203 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile->per_bfd); |
927aa2e7 JK |
5204 | if (dwz != NULL) |
5205 | { | |
5206 | if (!read_debug_names_from_section (objfile, | |
00f93c44 | 5207 | bfd_get_filename (dwz->dwz_bfd.get ()), |
927aa2e7 JK |
5208 | &dwz->debug_names, dwz_map)) |
5209 | { | |
5210 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
00f93c44 | 5211 | bfd_get_filename (dwz->dwz_bfd.get ())); |
927aa2e7 JK |
5212 | return false; |
5213 | } | |
5214 | } | |
5215 | ||
22ca247e | 5216 | create_cus_from_debug_names (dwarf2_per_objfile, *map, dwz_map); |
927aa2e7 | 5217 | |
22ca247e | 5218 | if (map->tu_count != 0) |
927aa2e7 JK |
5219 | { |
5220 | /* We can only handle a single .debug_types when we have an | |
5221 | index. */ | |
5989a64e | 5222 | if (dwarf2_per_objfile->per_bfd->types.size () != 1) |
927aa2e7 JK |
5223 | return false; |
5224 | ||
5989a64e | 5225 | dwarf2_section_info *section = &dwarf2_per_objfile->per_bfd->types[0]; |
927aa2e7 JK |
5226 | |
5227 | create_signatured_type_table_from_debug_names | |
5989a64e | 5228 | (dwarf2_per_objfile, *map, section, &dwarf2_per_objfile->per_bfd->abbrev); |
927aa2e7 JK |
5229 | } |
5230 | ||
ed2dc618 | 5231 | create_addrmap_from_aranges (dwarf2_per_objfile, |
5989a64e | 5232 | &dwarf2_per_objfile->per_bfd->debug_aranges); |
927aa2e7 | 5233 | |
5989a64e SM |
5234 | dwarf2_per_objfile->per_bfd->debug_names_table = std::move (map); |
5235 | dwarf2_per_objfile->per_bfd->using_index = 1; | |
5236 | dwarf2_per_objfile->per_bfd->quick_file_names_table = | |
5237 | create_quick_file_names_table (dwarf2_per_objfile->per_bfd->all_comp_units.size ()); | |
927aa2e7 JK |
5238 | |
5239 | return true; | |
5240 | } | |
5241 | ||
927aa2e7 JK |
5242 | /* Type used to manage iterating over all CUs looking for a symbol for |
5243 | .debug_names. */ | |
5244 | ||
5245 | class dw2_debug_names_iterator | |
5246 | { | |
5247 | public: | |
927aa2e7 | 5248 | dw2_debug_names_iterator (const mapped_debug_names &map, |
2b79f376 SM |
5249 | gdb::optional<block_enum> block_index, |
5250 | domain_enum domain, | |
927aa2e7 | 5251 | const char *name) |
2b79f376 | 5252 | : m_map (map), m_block_index (block_index), m_domain (domain), |
927aa2e7 JK |
5253 | m_addr (find_vec_in_debug_names (map, name)) |
5254 | {} | |
5255 | ||
5256 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5257 | search_domain search, uint32_t namei) | |
5258 | : m_map (map), | |
5259 | m_search (search), | |
5260 | m_addr (find_vec_in_debug_names (map, namei)) | |
5261 | {} | |
5262 | ||
3b00ef10 TT |
5263 | dw2_debug_names_iterator (const mapped_debug_names &map, |
5264 | block_enum block_index, domain_enum domain, | |
5265 | uint32_t namei) | |
5266 | : m_map (map), m_block_index (block_index), m_domain (domain), | |
5267 | m_addr (find_vec_in_debug_names (map, namei)) | |
5268 | {} | |
5269 | ||
927aa2e7 JK |
5270 | /* Return the next matching CU or NULL if there are no more. */ |
5271 | dwarf2_per_cu_data *next (); | |
5272 | ||
5273 | private: | |
5274 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5275 | const char *name); | |
5276 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5277 | uint32_t namei); | |
5278 | ||
5279 | /* The internalized form of .debug_names. */ | |
5280 | const mapped_debug_names &m_map; | |
5281 | ||
2b79f376 SM |
5282 | /* If set, only look for symbols that match that block. Valid values are |
5283 | GLOBAL_BLOCK and STATIC_BLOCK. */ | |
5284 | const gdb::optional<block_enum> m_block_index; | |
927aa2e7 JK |
5285 | |
5286 | /* The kind of symbol we're looking for. */ | |
5287 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5288 | const search_domain m_search = ALL_DOMAIN; | |
5289 | ||
5290 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5291 | not found. */ | |
5292 | const gdb_byte *m_addr; | |
5293 | }; | |
5294 | ||
5295 | const char * | |
5296 | mapped_debug_names::namei_to_name (uint32_t namei) const | |
5297 | { | |
5298 | const ULONGEST namei_string_offs | |
5299 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5300 | + namei * offset_size), | |
5301 | offset_size, | |
5302 | dwarf5_byte_order); | |
4f44ae6c TT |
5303 | return read_indirect_string_at_offset (dwarf2_per_objfile, |
5304 | namei_string_offs); | |
927aa2e7 JK |
5305 | } |
5306 | ||
5307 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5308 | found, return pointer to its pool data. If NAME cannot be found, | |
5309 | return NULL. */ | |
5310 | ||
5311 | const gdb_byte * | |
5312 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5313 | (const mapped_debug_names &map, const char *name) | |
5314 | { | |
5315 | int (*cmp) (const char *, const char *); | |
5316 | ||
54ee4252 | 5317 | gdb::unique_xmalloc_ptr<char> without_params; |
927aa2e7 JK |
5318 | if (current_language->la_language == language_cplus |
5319 | || current_language->la_language == language_fortran | |
5320 | || current_language->la_language == language_d) | |
5321 | { | |
5322 | /* NAME is already canonical. Drop any qualifiers as | |
5323 | .debug_names does not contain any. */ | |
5324 | ||
5325 | if (strchr (name, '(') != NULL) | |
5326 | { | |
54ee4252 | 5327 | without_params = cp_remove_params (name); |
927aa2e7 | 5328 | if (without_params != NULL) |
54ee4252 | 5329 | name = without_params.get (); |
927aa2e7 JK |
5330 | } |
5331 | } | |
5332 | ||
5333 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5334 | ||
5335 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5336 | uint32_t namei | |
5337 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5338 | (map.bucket_table_reordered | |
5339 | + (full_hash % map.bucket_count)), 4, | |
5340 | map.dwarf5_byte_order); | |
5341 | if (namei == 0) | |
5342 | return NULL; | |
5343 | --namei; | |
5344 | if (namei >= map.name_count) | |
5345 | { | |
b98664d3 | 5346 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5347 | "[in module %s]"), |
5348 | namei, map.name_count, | |
ed2dc618 | 5349 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5350 | return NULL; |
5351 | } | |
5352 | ||
5353 | for (;;) | |
5354 | { | |
5355 | const uint32_t namei_full_hash | |
5356 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5357 | (map.hash_table_reordered + namei), 4, | |
5358 | map.dwarf5_byte_order); | |
5359 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5360 | return NULL; | |
5361 | ||
5362 | if (full_hash == namei_full_hash) | |
5363 | { | |
5364 | const char *const namei_string = map.namei_to_name (namei); | |
5365 | ||
5366 | #if 0 /* An expensive sanity check. */ | |
5367 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5368 | { | |
b98664d3 | 5369 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5370 | "[in module %s]"), |
5371 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5372 | return NULL; | |
5373 | } | |
5374 | #endif | |
5375 | ||
5376 | if (cmp (namei_string, name) == 0) | |
5377 | { | |
5378 | const ULONGEST namei_entry_offs | |
5379 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5380 | + namei * map.offset_size), | |
5381 | map.offset_size, map.dwarf5_byte_order); | |
5382 | return map.entry_pool + namei_entry_offs; | |
5383 | } | |
5384 | } | |
5385 | ||
5386 | ++namei; | |
5387 | if (namei >= map.name_count) | |
5388 | return NULL; | |
5389 | } | |
5390 | } | |
5391 | ||
5392 | const gdb_byte * | |
5393 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5394 | (const mapped_debug_names &map, uint32_t namei) | |
5395 | { | |
5396 | if (namei >= map.name_count) | |
5397 | { | |
b98664d3 | 5398 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5399 | "[in module %s]"), |
5400 | namei, map.name_count, | |
ed2dc618 | 5401 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5402 | return NULL; |
5403 | } | |
5404 | ||
5405 | const ULONGEST namei_entry_offs | |
5406 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5407 | + namei * map.offset_size), | |
5408 | map.offset_size, map.dwarf5_byte_order); | |
5409 | return map.entry_pool + namei_entry_offs; | |
5410 | } | |
5411 | ||
5412 | /* See dw2_debug_names_iterator. */ | |
5413 | ||
5414 | dwarf2_per_cu_data * | |
5415 | dw2_debug_names_iterator::next () | |
5416 | { | |
5417 | if (m_addr == NULL) | |
5418 | return NULL; | |
5419 | ||
ed2dc618 SM |
5420 | struct dwarf2_per_objfile *dwarf2_per_objfile = m_map.dwarf2_per_objfile; |
5421 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5422 | bfd *const abfd = objfile->obfd; | |
927aa2e7 JK |
5423 | |
5424 | again: | |
5425 | ||
5426 | unsigned int bytes_read; | |
5427 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5428 | m_addr += bytes_read; | |
5429 | if (abbrev == 0) | |
5430 | return NULL; | |
5431 | ||
5432 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5433 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5434 | { | |
b98664d3 | 5435 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5436 | "[in module %s]"), |
ed2dc618 | 5437 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5438 | return NULL; |
5439 | } | |
5440 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
beadd3e8 SM |
5441 | enum class symbol_linkage { |
5442 | unknown, | |
5443 | static_, | |
5444 | extern_, | |
23c13d42 | 5445 | } symbol_linkage_ = symbol_linkage::unknown; |
927aa2e7 JK |
5446 | dwarf2_per_cu_data *per_cu = NULL; |
5447 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5448 | { | |
5449 | ULONGEST ull; | |
5450 | switch (attr.form) | |
5451 | { | |
5452 | case DW_FORM_implicit_const: | |
5453 | ull = attr.implicit_const; | |
5454 | break; | |
5455 | case DW_FORM_flag_present: | |
5456 | ull = 1; | |
5457 | break; | |
5458 | case DW_FORM_udata: | |
5459 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5460 | m_addr += bytes_read; | |
5461 | break; | |
6dc55ce9 | 5462 | case DW_FORM_ref4: |
5463 | ull = read_4_bytes (abfd, m_addr); | |
5464 | m_addr += 4; | |
5465 | break; | |
5466 | case DW_FORM_ref8: | |
5467 | ull = read_8_bytes (abfd, m_addr); | |
5468 | m_addr += 8; | |
5469 | break; | |
5470 | case DW_FORM_ref_sig8: | |
5471 | ull = read_8_bytes (abfd, m_addr); | |
5472 | m_addr += 8; | |
5473 | break; | |
927aa2e7 | 5474 | default: |
b98664d3 | 5475 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5476 | dwarf_form_name (attr.form), |
ed2dc618 | 5477 | objfile_name (objfile)); |
927aa2e7 JK |
5478 | return NULL; |
5479 | } | |
5480 | switch (attr.dw_idx) | |
5481 | { | |
5482 | case DW_IDX_compile_unit: | |
5483 | /* Don't crash on bad data. */ | |
5989a64e | 5484 | if (ull >= dwarf2_per_objfile->per_bfd->all_comp_units.size ()) |
927aa2e7 | 5485 | { |
b98664d3 | 5486 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5487 | " [in module %s]"), |
5488 | pulongest (ull), | |
5489 | objfile_name (dwarf2_per_objfile->objfile)); | |
5490 | continue; | |
5491 | } | |
5989a64e | 5492 | per_cu = dwarf2_per_objfile->per_bfd->get_cutu (ull); |
927aa2e7 | 5493 | break; |
8af5c486 JK |
5494 | case DW_IDX_type_unit: |
5495 | /* Don't crash on bad data. */ | |
5989a64e | 5496 | if (ull >= dwarf2_per_objfile->per_bfd->all_type_units.size ()) |
8af5c486 | 5497 | { |
b98664d3 | 5498 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5499 | " [in module %s]"), |
5500 | pulongest (ull), | |
5501 | objfile_name (dwarf2_per_objfile->objfile)); | |
5502 | continue; | |
5503 | } | |
5989a64e | 5504 | per_cu = &dwarf2_per_objfile->per_bfd->get_tu (ull)->per_cu; |
8af5c486 | 5505 | break; |
6dc55ce9 | 5506 | case DW_IDX_die_offset: |
5507 | /* In a per-CU index (as opposed to a per-module index), index | |
5508 | entries without CU attribute implicitly refer to the single CU. */ | |
5509 | if (per_cu == NULL) | |
5989a64e | 5510 | per_cu = dwarf2_per_objfile->per_bfd->get_cu (0); |
6dc55ce9 | 5511 | break; |
927aa2e7 JK |
5512 | case DW_IDX_GNU_internal: |
5513 | if (!m_map.augmentation_is_gdb) | |
5514 | break; | |
23c13d42 | 5515 | symbol_linkage_ = symbol_linkage::static_; |
927aa2e7 JK |
5516 | break; |
5517 | case DW_IDX_GNU_external: | |
5518 | if (!m_map.augmentation_is_gdb) | |
5519 | break; | |
23c13d42 | 5520 | symbol_linkage_ = symbol_linkage::extern_; |
927aa2e7 JK |
5521 | break; |
5522 | } | |
5523 | } | |
5524 | ||
5525 | /* Skip if already read in. */ | |
af758d11 | 5526 | if (dwarf2_per_objfile->symtab_set_p (per_cu)) |
927aa2e7 JK |
5527 | goto again; |
5528 | ||
5529 | /* Check static vs global. */ | |
23c13d42 | 5530 | if (symbol_linkage_ != symbol_linkage::unknown && m_block_index.has_value ()) |
927aa2e7 | 5531 | { |
2b79f376 | 5532 | const bool want_static = *m_block_index == STATIC_BLOCK; |
23c13d42 SM |
5533 | const bool symbol_is_static = |
5534 | symbol_linkage_ == symbol_linkage::static_; | |
beadd3e8 | 5535 | if (want_static != symbol_is_static) |
2b79f376 | 5536 | goto again; |
927aa2e7 JK |
5537 | } |
5538 | ||
5539 | /* Match dw2_symtab_iter_next, symbol_kind | |
5540 | and debug_names::psymbol_tag. */ | |
5541 | switch (m_domain) | |
5542 | { | |
5543 | case VAR_DOMAIN: | |
5544 | switch (indexval.dwarf_tag) | |
5545 | { | |
5546 | case DW_TAG_variable: | |
5547 | case DW_TAG_subprogram: | |
5548 | /* Some types are also in VAR_DOMAIN. */ | |
5549 | case DW_TAG_typedef: | |
5550 | case DW_TAG_structure_type: | |
5551 | break; | |
5552 | default: | |
5553 | goto again; | |
5554 | } | |
5555 | break; | |
5556 | case STRUCT_DOMAIN: | |
5557 | switch (indexval.dwarf_tag) | |
5558 | { | |
5559 | case DW_TAG_typedef: | |
5560 | case DW_TAG_structure_type: | |
5561 | break; | |
5562 | default: | |
5563 | goto again; | |
5564 | } | |
5565 | break; | |
5566 | case LABEL_DOMAIN: | |
5567 | switch (indexval.dwarf_tag) | |
5568 | { | |
5569 | case 0: | |
5570 | case DW_TAG_variable: | |
5571 | break; | |
5572 | default: | |
5573 | goto again; | |
5574 | } | |
5575 | break; | |
59c35742 AB |
5576 | case MODULE_DOMAIN: |
5577 | switch (indexval.dwarf_tag) | |
5578 | { | |
5579 | case DW_TAG_module: | |
5580 | break; | |
5581 | default: | |
5582 | goto again; | |
5583 | } | |
5584 | break; | |
927aa2e7 JK |
5585 | default: |
5586 | break; | |
5587 | } | |
5588 | ||
5589 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5590 | debug_names::psymbol_tag. */ | |
5591 | switch (m_search) | |
4b514bc8 | 5592 | { |
927aa2e7 JK |
5593 | case VARIABLES_DOMAIN: |
5594 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5595 | { |
927aa2e7 JK |
5596 | case DW_TAG_variable: |
5597 | break; | |
5598 | default: | |
5599 | goto again; | |
4b514bc8 | 5600 | } |
927aa2e7 JK |
5601 | break; |
5602 | case FUNCTIONS_DOMAIN: | |
5603 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5604 | { |
927aa2e7 JK |
5605 | case DW_TAG_subprogram: |
5606 | break; | |
5607 | default: | |
5608 | goto again; | |
4b514bc8 | 5609 | } |
927aa2e7 JK |
5610 | break; |
5611 | case TYPES_DOMAIN: | |
5612 | switch (indexval.dwarf_tag) | |
5613 | { | |
5614 | case DW_TAG_typedef: | |
5615 | case DW_TAG_structure_type: | |
5616 | break; | |
5617 | default: | |
5618 | goto again; | |
5619 | } | |
5620 | break; | |
59c35742 AB |
5621 | case MODULES_DOMAIN: |
5622 | switch (indexval.dwarf_tag) | |
5623 | { | |
5624 | case DW_TAG_module: | |
5625 | break; | |
5626 | default: | |
5627 | goto again; | |
5628 | } | |
927aa2e7 JK |
5629 | default: |
5630 | break; | |
4b514bc8 | 5631 | } |
927aa2e7 JK |
5632 | |
5633 | return per_cu; | |
4b514bc8 | 5634 | } |
61920122 | 5635 | |
927aa2e7 | 5636 | static struct compunit_symtab * |
c7f839cb | 5637 | dw2_debug_names_lookup_symbol (struct objfile *objfile, block_enum block_index, |
927aa2e7 | 5638 | const char *name, domain_enum domain) |
4b514bc8 | 5639 | { |
ed2dc618 SM |
5640 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5641 | = get_dwarf2_per_objfile (objfile); | |
61920122 | 5642 | |
5989a64e | 5643 | const auto &mapp = dwarf2_per_objfile->per_bfd->debug_names_table; |
927aa2e7 | 5644 | if (!mapp) |
61920122 | 5645 | { |
927aa2e7 JK |
5646 | /* index is NULL if OBJF_READNOW. */ |
5647 | return NULL; | |
5648 | } | |
5649 | const auto &map = *mapp; | |
9291a0cd | 5650 | |
2b79f376 | 5651 | dw2_debug_names_iterator iter (map, block_index, domain, name); |
9703b513 | 5652 | |
927aa2e7 JK |
5653 | struct compunit_symtab *stab_best = NULL; |
5654 | struct dwarf2_per_cu_data *per_cu; | |
5655 | while ((per_cu = iter.next ()) != NULL) | |
5656 | { | |
5657 | struct symbol *sym, *with_opaque = NULL; | |
97a1449a SM |
5658 | compunit_symtab *stab |
5659 | = dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); | |
927aa2e7 | 5660 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 5661 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 5662 | |
927aa2e7 JK |
5663 | sym = block_find_symbol (block, name, domain, |
5664 | block_find_non_opaque_type_preferred, | |
5665 | &with_opaque); | |
9703b513 | 5666 | |
927aa2e7 JK |
5667 | /* Some caution must be observed with overloaded functions and |
5668 | methods, since the index will not contain any overload | |
5669 | information (but NAME might contain it). */ | |
a3ec0bb1 | 5670 | |
927aa2e7 | 5671 | if (sym != NULL |
987012b8 | 5672 | && strcmp_iw (sym->search_name (), name) == 0) |
927aa2e7 JK |
5673 | return stab; |
5674 | if (with_opaque != NULL | |
987012b8 | 5675 | && strcmp_iw (with_opaque->search_name (), name) == 0) |
927aa2e7 | 5676 | stab_best = stab; |
9703b513 | 5677 | |
927aa2e7 | 5678 | /* Keep looking through other CUs. */ |
9703b513 TT |
5679 | } |
5680 | ||
927aa2e7 | 5681 | return stab_best; |
9703b513 TT |
5682 | } |
5683 | ||
927aa2e7 JK |
5684 | /* This dumps minimal information about .debug_names. It is called |
5685 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
5686 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 5687 | |
927aa2e7 JK |
5688 | static void |
5689 | dw2_debug_names_dump (struct objfile *objfile) | |
5690 | { | |
ed2dc618 SM |
5691 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5692 | = get_dwarf2_per_objfile (objfile); | |
5693 | ||
5989a64e | 5694 | gdb_assert (dwarf2_per_objfile->per_bfd->using_index); |
927aa2e7 | 5695 | printf_filtered (".debug_names:"); |
5989a64e | 5696 | if (dwarf2_per_objfile->per_bfd->debug_names_table) |
927aa2e7 JK |
5697 | printf_filtered (" exists\n"); |
5698 | else | |
5699 | printf_filtered (" faked for \"readnow\"\n"); | |
5700 | printf_filtered ("\n"); | |
9291a0cd TT |
5701 | } |
5702 | ||
9291a0cd | 5703 | static void |
927aa2e7 JK |
5704 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
5705 | const char *func_name) | |
9291a0cd | 5706 | { |
ed2dc618 SM |
5707 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5708 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 5709 | |
5989a64e SM |
5710 | /* dwarf2_per_objfile->per_bfd->debug_names_table is NULL if OBJF_READNOW. */ |
5711 | if (dwarf2_per_objfile->per_bfd->debug_names_table) | |
24c79950 | 5712 | { |
5989a64e | 5713 | const mapped_debug_names &map = *dwarf2_per_objfile->per_bfd->debug_names_table; |
24c79950 | 5714 | |
2b79f376 | 5715 | dw2_debug_names_iterator iter (map, {}, VAR_DOMAIN, func_name); |
24c79950 | 5716 | |
927aa2e7 JK |
5717 | struct dwarf2_per_cu_data *per_cu; |
5718 | while ((per_cu = iter.next ()) != NULL) | |
97a1449a | 5719 | dw2_instantiate_symtab (per_cu, dwarf2_per_objfile, false); |
927aa2e7 JK |
5720 | } |
5721 | } | |
24c79950 | 5722 | |
3b00ef10 TT |
5723 | static void |
5724 | dw2_debug_names_map_matching_symbols | |
5725 | (struct objfile *objfile, | |
5726 | const lookup_name_info &name, domain_enum domain, | |
5727 | int global, | |
5728 | gdb::function_view<symbol_found_callback_ftype> callback, | |
5729 | symbol_compare_ftype *ordered_compare) | |
5730 | { | |
5731 | struct dwarf2_per_objfile *dwarf2_per_objfile | |
5732 | = get_dwarf2_per_objfile (objfile); | |
5733 | ||
5734 | /* debug_names_table is NULL if OBJF_READNOW. */ | |
5989a64e | 5735 | if (!dwarf2_per_objfile->per_bfd->debug_names_table) |
3b00ef10 TT |
5736 | return; |
5737 | ||
5989a64e | 5738 | mapped_debug_names &map = *dwarf2_per_objfile->per_bfd->debug_names_table; |
3b00ef10 TT |
5739 | const block_enum block_kind = global ? GLOBAL_BLOCK : STATIC_BLOCK; |
5740 | ||
5741 | const char *match_name = name.ada ().lookup_name ().c_str (); | |
5742 | auto matcher = [&] (const char *symname) | |
5743 | { | |
5744 | if (ordered_compare == nullptr) | |
5745 | return true; | |
5746 | return ordered_compare (symname, match_name) == 0; | |
5747 | }; | |
5748 | ||
5749 | dw2_expand_symtabs_matching_symbol (map, name, matcher, ALL_DOMAIN, | |
5750 | [&] (offset_type namei) | |
5751 | { | |
5752 | /* The name was matched, now expand corresponding CUs that were | |
5753 | marked. */ | |
5754 | dw2_debug_names_iterator iter (map, block_kind, domain, namei); | |
5755 | ||
5756 | struct dwarf2_per_cu_data *per_cu; | |
5757 | while ((per_cu = iter.next ()) != NULL) | |
97a1449a SM |
5758 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, nullptr, |
5759 | nullptr); | |
3b00ef10 TT |
5760 | return true; |
5761 | }); | |
5762 | ||
5763 | /* It's a shame we couldn't do this inside the | |
5764 | dw2_expand_symtabs_matching_symbol callback, but that skips CUs | |
5765 | that have already been expanded. Instead, this loop matches what | |
5766 | the psymtab code does. */ | |
5989a64e | 5767 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
3b00ef10 | 5768 | { |
af758d11 SM |
5769 | compunit_symtab *symtab = dwarf2_per_objfile->get_symtab (per_cu); |
5770 | if (symtab != nullptr) | |
3b00ef10 TT |
5771 | { |
5772 | const struct block *block | |
af758d11 | 5773 | = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (symtab), block_kind); |
3b00ef10 TT |
5774 | if (!iterate_over_symbols_terminated (block, name, |
5775 | domain, callback)) | |
5776 | break; | |
5777 | } | |
5778 | } | |
5779 | } | |
5780 | ||
927aa2e7 JK |
5781 | static void |
5782 | dw2_debug_names_expand_symtabs_matching | |
5783 | (struct objfile *objfile, | |
5784 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
c1a66c06 | 5785 | const lookup_name_info *lookup_name, |
927aa2e7 JK |
5786 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
5787 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5788 | enum search_domain kind) | |
5789 | { | |
ed2dc618 SM |
5790 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5791 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 5792 | |
927aa2e7 | 5793 | /* debug_names_table is NULL if OBJF_READNOW. */ |
5989a64e | 5794 | if (!dwarf2_per_objfile->per_bfd->debug_names_table) |
927aa2e7 | 5795 | return; |
9291a0cd | 5796 | |
ed2dc618 | 5797 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
24c79950 | 5798 | |
c1a66c06 TV |
5799 | if (symbol_matcher == NULL && lookup_name == NULL) |
5800 | { | |
5989a64e | 5801 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
c1a66c06 TV |
5802 | { |
5803 | QUIT; | |
5804 | ||
97a1449a SM |
5805 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, |
5806 | file_matcher, expansion_notify); | |
c1a66c06 TV |
5807 | } |
5808 | return; | |
5809 | } | |
5810 | ||
5989a64e | 5811 | mapped_debug_names &map = *dwarf2_per_objfile->per_bfd->debug_names_table; |
bbf2f4df | 5812 | |
c1a66c06 | 5813 | dw2_expand_symtabs_matching_symbol (map, *lookup_name, |
44ed8f3e PA |
5814 | symbol_matcher, |
5815 | kind, [&] (offset_type namei) | |
927aa2e7 | 5816 | { |
927aa2e7 JK |
5817 | /* The name was matched, now expand corresponding CUs that were |
5818 | marked. */ | |
5819 | dw2_debug_names_iterator iter (map, kind, namei); | |
bbf2f4df | 5820 | |
927aa2e7 JK |
5821 | struct dwarf2_per_cu_data *per_cu; |
5822 | while ((per_cu = iter.next ()) != NULL) | |
97a1449a SM |
5823 | dw2_expand_symtabs_matching_one (per_cu, dwarf2_per_objfile, |
5824 | file_matcher, expansion_notify); | |
3b00ef10 | 5825 | return true; |
44ed8f3e | 5826 | }); |
9291a0cd TT |
5827 | } |
5828 | ||
927aa2e7 | 5829 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
5830 | { |
5831 | dw2_has_symbols, | |
5832 | dw2_find_last_source_symtab, | |
5833 | dw2_forget_cached_source_info, | |
f8eba3c6 | 5834 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 5835 | dw2_debug_names_lookup_symbol, |
d3214198 | 5836 | NULL, |
9291a0cd | 5837 | dw2_print_stats, |
927aa2e7 | 5838 | dw2_debug_names_dump, |
927aa2e7 | 5839 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 5840 | dw2_expand_all_symtabs, |
652a8996 | 5841 | dw2_expand_symtabs_with_fullname, |
3b00ef10 | 5842 | dw2_debug_names_map_matching_symbols, |
927aa2e7 | 5843 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 5844 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 5845 | NULL, |
9291a0cd TT |
5846 | dw2_map_symbol_filenames |
5847 | }; | |
5848 | ||
4485a1c1 | 5849 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
5989a64e | 5850 | to either a dwarf2_per_bfd or dwz_file object. */ |
4485a1c1 SM |
5851 | |
5852 | template <typename T> | |
5853 | static gdb::array_view<const gdb_byte> | |
5854 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
5855 | { | |
5856 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
5857 | ||
96b79293 | 5858 | if (section->empty ()) |
4485a1c1 SM |
5859 | return {}; |
5860 | ||
5861 | /* Older elfutils strip versions could keep the section in the main | |
5862 | executable while splitting it for the separate debug info file. */ | |
96b79293 | 5863 | if ((section->get_flags () & SEC_HAS_CONTENTS) == 0) |
4485a1c1 SM |
5864 | return {}; |
5865 | ||
96b79293 | 5866 | section->read (obj); |
4485a1c1 | 5867 | |
8bebfcda PA |
5868 | /* dwarf2_section_info::size is a bfd_size_type, while |
5869 | gdb::array_view works with size_t. On 32-bit hosts, with | |
5870 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
5871 | is 32-bit. So we need an explicit narrowing conversion here. | |
5872 | This is fine, because it's impossible to allocate or mmap an | |
5873 | array/buffer larger than what size_t can represent. */ | |
5874 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
5875 | } |
5876 | ||
87d6a7aa SM |
5877 | /* Lookup the index cache for the contents of the index associated to |
5878 | DWARF2_OBJ. */ | |
5879 | ||
5880 | static gdb::array_view<const gdb_byte> | |
5989a64e | 5881 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_bfd *dwarf2_per_bfd) |
87d6a7aa SM |
5882 | { |
5883 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
5884 | if (build_id == nullptr) | |
5885 | return {}; | |
5886 | ||
5887 | return global_index_cache.lookup_gdb_index (build_id, | |
5989a64e | 5888 | &dwarf2_per_bfd->index_cache_res); |
87d6a7aa SM |
5889 | } |
5890 | ||
5891 | /* Same as the above, but for DWZ. */ | |
5892 | ||
5893 | static gdb::array_view<const gdb_byte> | |
5894 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
5895 | { | |
5896 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
5897 | if (build_id == nullptr) | |
5898 | return {}; | |
5899 | ||
5900 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
5901 | } | |
5902 | ||
3c0aa29a | 5903 | /* See symfile.h. */ |
9291a0cd | 5904 | |
3c0aa29a PA |
5905 | bool |
5906 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 5907 | { |
ed2dc618 SM |
5908 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5909 | = get_dwarf2_per_objfile (objfile); | |
5910 | ||
9291a0cd TT |
5911 | /* If we're about to read full symbols, don't bother with the |
5912 | indices. In this case we also don't care if some other debug | |
5913 | format is making psymtabs, because they are all about to be | |
5914 | expanded anyway. */ | |
5915 | if ((objfile->flags & OBJF_READNOW)) | |
5916 | { | |
5989a64e | 5917 | dwarf2_per_objfile->per_bfd->using_index = 1; |
ed2dc618 SM |
5918 | create_all_comp_units (dwarf2_per_objfile); |
5919 | create_all_type_units (dwarf2_per_objfile); | |
5989a64e | 5920 | dwarf2_per_objfile->per_bfd->quick_file_names_table |
b76e467d | 5921 | = create_quick_file_names_table |
5989a64e | 5922 | (dwarf2_per_objfile->per_bfd->all_comp_units.size ()); |
af758d11 | 5923 | dwarf2_per_objfile->resize_symtabs (); |
9291a0cd | 5924 | |
5989a64e SM |
5925 | for (int i = 0; i < (dwarf2_per_objfile->per_bfd->all_comp_units.size () |
5926 | + dwarf2_per_objfile->per_bfd->all_type_units.size ()); ++i) | |
9291a0cd | 5927 | { |
5989a64e | 5928 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->per_bfd->get_cutu (i); |
9291a0cd | 5929 | |
5989a64e | 5930 | per_cu->v.quick = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
e254ef6a | 5931 | struct dwarf2_per_cu_quick_data); |
9291a0cd TT |
5932 | } |
5933 | ||
5934 | /* Return 1 so that gdb sees the "quick" functions. However, | |
5935 | these functions will be no-ops because we will have expanded | |
5936 | all symtabs. */ | |
3c0aa29a PA |
5937 | *index_kind = dw_index_kind::GDB_INDEX; |
5938 | return true; | |
9291a0cd TT |
5939 | } |
5940 | ||
ed2dc618 | 5941 | if (dwarf2_read_debug_names (dwarf2_per_objfile)) |
3c0aa29a PA |
5942 | { |
5943 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
af758d11 | 5944 | dwarf2_per_objfile->resize_symtabs (); |
3c0aa29a PA |
5945 | return true; |
5946 | } | |
927aa2e7 | 5947 | |
4485a1c1 | 5948 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, |
5989a64e | 5949 | get_gdb_index_contents_from_section<struct dwarf2_per_bfd>, |
4485a1c1 | 5950 | get_gdb_index_contents_from_section<dwz_file>)) |
3c0aa29a PA |
5951 | { |
5952 | *index_kind = dw_index_kind::GDB_INDEX; | |
af758d11 | 5953 | dwarf2_per_objfile->resize_symtabs (); |
3c0aa29a PA |
5954 | return true; |
5955 | } | |
9291a0cd | 5956 | |
87d6a7aa SM |
5957 | /* ... otherwise, try to find the index in the index cache. */ |
5958 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, | |
5959 | get_gdb_index_contents_from_cache, | |
5960 | get_gdb_index_contents_from_cache_dwz)) | |
5961 | { | |
5962 | global_index_cache.hit (); | |
5963 | *index_kind = dw_index_kind::GDB_INDEX; | |
af758d11 | 5964 | dwarf2_per_objfile->resize_symtabs (); |
87d6a7aa SM |
5965 | return true; |
5966 | } | |
5967 | ||
5968 | global_index_cache.miss (); | |
3c0aa29a | 5969 | return false; |
9291a0cd TT |
5970 | } |
5971 | ||
5972 | \f | |
5973 | ||
dce234bc PP |
5974 | /* Build a partial symbol table. */ |
5975 | ||
5976 | void | |
f29dff0a | 5977 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 5978 | { |
ed2dc618 SM |
5979 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5980 | = get_dwarf2_per_objfile (objfile); | |
c9bf0622 | 5981 | |
6eee24ce | 5982 | init_psymbol_list (objfile, 1024); |
c906108c | 5983 | |
a70b8144 | 5984 | try |
c9bf0622 TT |
5985 | { |
5986 | /* This isn't really ideal: all the data we allocate on the | |
5987 | objfile's obstack is still uselessly kept around. However, | |
5988 | freeing it seems unsafe. */ | |
906768f9 | 5989 | psymtab_discarder psymtabs (objfile); |
ed2dc618 | 5990 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile); |
906768f9 | 5991 | psymtabs.keep (); |
87d6a7aa | 5992 | |
af758d11 SM |
5993 | dwarf2_per_objfile->resize_symtabs (); |
5994 | ||
87d6a7aa SM |
5995 | /* (maybe) store an index in the cache. */ |
5996 | global_index_cache.store (dwarf2_per_objfile); | |
c9bf0622 | 5997 | } |
230d2906 | 5998 | catch (const gdb_exception_error &except) |
492d29ea PA |
5999 | { |
6000 | exception_print (gdb_stderr, except); | |
6001 | } | |
c906108c | 6002 | } |
c906108c | 6003 | |
3b80fe9b DE |
6004 | /* Find the base address of the compilation unit for range lists and |
6005 | location lists. It will normally be specified by DW_AT_low_pc. | |
6006 | In DWARF-3 draft 4, the base address could be overridden by | |
6007 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6008 | compilation units with discontinuous ranges. */ | |
6009 | ||
6010 | static void | |
6011 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6012 | { | |
6013 | struct attribute *attr; | |
6014 | ||
2b24b6e4 | 6015 | cu->base_address.reset (); |
3b80fe9b DE |
6016 | |
6017 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
435d3d88 | 6018 | if (attr != nullptr) |
2b24b6e4 | 6019 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
6020 | else |
6021 | { | |
6022 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
435d3d88 | 6023 | if (attr != nullptr) |
2b24b6e4 | 6024 | cu->base_address = attr->value_as_address (); |
3b80fe9b DE |
6025 | } |
6026 | } | |
6027 | ||
36586728 TT |
6028 | /* Helper function that returns the proper abbrev section for |
6029 | THIS_CU. */ | |
6030 | ||
6031 | static struct dwarf2_section_info * | |
6032 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6033 | { | |
6034 | struct dwarf2_section_info *abbrev; | |
c3699833 | 6035 | dwarf2_per_bfd *per_bfd = this_cu->per_bfd; |
36586728 TT |
6036 | |
6037 | if (this_cu->is_dwz) | |
c3699833 | 6038 | abbrev = &dwarf2_get_dwz_file (per_bfd)->abbrev; |
36586728 | 6039 | else |
c3699833 | 6040 | abbrev = &per_bfd->abbrev; |
36586728 TT |
6041 | |
6042 | return abbrev; | |
6043 | } | |
6044 | ||
f4dc4d17 DE |
6045 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6046 | ||
6047 | static sect_offset | |
ed2dc618 SM |
6048 | read_abbrev_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6049 | struct dwarf2_section_info *section, | |
9c541725 | 6050 | sect_offset sect_off) |
f4dc4d17 | 6051 | { |
96b79293 | 6052 | bfd *abfd = section->get_bfd_owner (); |
d521ce57 | 6053 | const gdb_byte *info_ptr; |
ac298888 | 6054 | unsigned int initial_length_size, offset_size; |
43988095 | 6055 | uint16_t version; |
f4dc4d17 | 6056 | |
96b79293 | 6057 | section->read (dwarf2_per_objfile->objfile); |
9c541725 | 6058 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6059 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6060 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6061 | info_ptr += initial_length_size; |
6062 | ||
6063 | version = read_2_bytes (abfd, info_ptr); | |
6064 | info_ptr += 2; | |
6065 | if (version >= 5) | |
6066 | { | |
6067 | /* Skip unit type and address size. */ | |
6068 | info_ptr += 2; | |
6069 | } | |
6070 | ||
24aa364d | 6071 | return (sect_offset) read_offset (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6072 | } |
6073 | ||
b83470bf TT |
6074 | /* A partial symtab that is used only for include files. */ |
6075 | struct dwarf2_include_psymtab : public partial_symtab | |
6076 | { | |
6077 | dwarf2_include_psymtab (const char *filename, struct objfile *objfile) | |
6078 | : partial_symtab (filename, objfile) | |
6079 | { | |
6080 | } | |
6081 | ||
6082 | void read_symtab (struct objfile *objfile) override | |
6083 | { | |
194d088f TV |
6084 | /* It's an include file, no symbols to read for it. |
6085 | Everything is in the includer symtab. */ | |
6086 | ||
6087 | /* The expansion of a dwarf2_include_psymtab is just a trigger for | |
6088 | expansion of the includer psymtab. We use the dependencies[0] field to | |
6089 | model the includer. But if we go the regular route of calling | |
6090 | expand_psymtab here, and having expand_psymtab call expand_dependencies | |
6091 | to expand the includer, we'll only use expand_psymtab on the includer | |
6092 | (making it a non-toplevel psymtab), while if we expand the includer via | |
6093 | another path, we'll use read_symtab (making it a toplevel psymtab). | |
6094 | So, don't pretend a dwarf2_include_psymtab is an actual toplevel | |
6095 | psymtab, and trigger read_symtab on the includer here directly. */ | |
6096 | includer ()->read_symtab (objfile); | |
b83470bf TT |
6097 | } |
6098 | ||
6099 | void expand_psymtab (struct objfile *objfile) override | |
6100 | { | |
194d088f TV |
6101 | /* This is not called by read_symtab, and should not be called by any |
6102 | expand_dependencies. */ | |
6103 | gdb_assert (false); | |
b83470bf TT |
6104 | } |
6105 | ||
5717c425 | 6106 | bool readin_p (struct objfile *objfile) const override |
b83470bf | 6107 | { |
5717c425 | 6108 | return includer ()->readin_p (objfile); |
b83470bf TT |
6109 | } |
6110 | ||
5717c425 | 6111 | compunit_symtab *get_compunit_symtab (struct objfile *objfile) const override |
b83470bf TT |
6112 | { |
6113 | return nullptr; | |
6114 | } | |
6115 | ||
6116 | private: | |
194d088f TV |
6117 | partial_symtab *includer () const |
6118 | { | |
6119 | /* An include psymtab has exactly one dependency: the psymtab that | |
6120 | includes it. */ | |
6121 | gdb_assert (this->number_of_dependencies == 1); | |
6122 | return this->dependencies[0]; | |
6123 | } | |
b83470bf TT |
6124 | }; |
6125 | ||
aaa75496 JB |
6126 | /* Allocate a new partial symtab for file named NAME and mark this new |
6127 | partial symtab as being an include of PST. */ | |
6128 | ||
6129 | static void | |
891813be | 6130 | dwarf2_create_include_psymtab (const char *name, dwarf2_psymtab *pst, |
aaa75496 JB |
6131 | struct objfile *objfile) |
6132 | { | |
b83470bf | 6133 | dwarf2_include_psymtab *subpst = new dwarf2_include_psymtab (name, objfile); |
aaa75496 | 6134 | |
fbd9ab74 | 6135 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
45940949 | 6136 | subpst->dirname = pst->dirname; |
fbd9ab74 | 6137 | |
a9342b62 | 6138 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
6139 | subpst->dependencies[0] = pst; |
6140 | subpst->number_of_dependencies = 1; | |
aaa75496 JB |
6141 | } |
6142 | ||
6143 | /* Read the Line Number Program data and extract the list of files | |
6144 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6145 | partial symtab for each of these included files. */ |
aaa75496 JB |
6146 | |
6147 | static void | |
6148 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 | 6149 | struct die_info *die, |
891813be | 6150 | dwarf2_psymtab *pst) |
aaa75496 | 6151 | { |
fff8551c | 6152 | line_header_up lh; |
d85a05f0 | 6153 | struct attribute *attr; |
aaa75496 | 6154 | |
d85a05f0 | 6155 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
435d3d88 | 6156 | if (attr != nullptr) |
9c541725 | 6157 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
6158 | if (lh == NULL) |
6159 | return; /* No linetable, so no includes. */ | |
6160 | ||
79748972 TT |
6161 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6162 | that we pass in the raw text_low here; that is ok because we're | |
6163 | only decoding the line table to make include partial symtabs, and | |
6164 | so the addresses aren't really used. */ | |
4ae976d1 | 6165 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6166 | pst->raw_text_low (), 1); |
aaa75496 JB |
6167 | } |
6168 | ||
348e048f | 6169 | static hashval_t |
52dc124a | 6170 | hash_signatured_type (const void *item) |
348e048f | 6171 | { |
9a3c8263 SM |
6172 | const struct signatured_type *sig_type |
6173 | = (const struct signatured_type *) item; | |
9a619af0 | 6174 | |
348e048f | 6175 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6176 | return sig_type->signature; |
348e048f DE |
6177 | } |
6178 | ||
6179 | static int | |
52dc124a | 6180 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6181 | { |
9a3c8263 SM |
6182 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6183 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6184 | |
348e048f DE |
6185 | return lhs->signature == rhs->signature; |
6186 | } | |
6187 | ||
1fd400ff TT |
6188 | /* Allocate a hash table for signatured types. */ |
6189 | ||
b0b6a987 | 6190 | static htab_up |
298e9637 | 6191 | allocate_signatured_type_table () |
1fd400ff | 6192 | { |
b0b6a987 TT |
6193 | return htab_up (htab_create_alloc (41, |
6194 | hash_signatured_type, | |
6195 | eq_signatured_type, | |
6196 | NULL, xcalloc, xfree)); | |
1fd400ff TT |
6197 | } |
6198 | ||
d467dd73 | 6199 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6200 | |
6201 | static int | |
d467dd73 | 6202 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6203 | { |
9a3c8263 | 6204 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6205 | std::vector<signatured_type *> *all_type_units |
6206 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6207 | |
b2bdb8cf | 6208 | all_type_units->push_back (sigt); |
1fd400ff TT |
6209 | |
6210 | return 1; | |
6211 | } | |
6212 | ||
78d4d2c5 | 6213 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6214 | and fill them into TYPES_HTAB. It will process only type units, |
6215 | therefore DW_UT_type. */ | |
c88ee1f0 | 6216 | |
78d4d2c5 | 6217 | static void |
ed2dc618 SM |
6218 | create_debug_type_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6219 | struct dwo_file *dwo_file, | |
b0b6a987 | 6220 | dwarf2_section_info *section, htab_up &types_htab, |
43988095 | 6221 | rcuh_kind section_kind) |
348e048f | 6222 | { |
3019eac3 | 6223 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 6224 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6225 | bfd *abfd; |
6226 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6227 | |
4bdcc0c1 DE |
6228 | abbrev_section = (dwo_file != NULL |
6229 | ? &dwo_file->sections.abbrev | |
5989a64e | 6230 | : &dwarf2_per_objfile->per_bfd->abbrev); |
4bdcc0c1 | 6231 | |
b4f54984 | 6232 | if (dwarf_read_debug) |
43988095 | 6233 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
96b79293 TT |
6234 | section->get_name (), |
6235 | abbrev_section->get_file_name ()); | |
09406207 | 6236 | |
96b79293 | 6237 | section->read (objfile); |
78d4d2c5 | 6238 | info_ptr = section->buffer; |
348e048f | 6239 | |
78d4d2c5 JK |
6240 | if (info_ptr == NULL) |
6241 | return; | |
348e048f | 6242 | |
78d4d2c5 JK |
6243 | /* We can't set abfd until now because the section may be empty or |
6244 | not present, in which case the bfd is unknown. */ | |
96b79293 | 6245 | abfd = section->get_bfd_owner (); |
348e048f | 6246 | |
c0ab21c2 TT |
6247 | /* We don't use cutu_reader here because we don't need to read |
6248 | any dies: the signature is in the header. */ | |
3019eac3 | 6249 | |
78d4d2c5 JK |
6250 | end_ptr = info_ptr + section->size; |
6251 | while (info_ptr < end_ptr) | |
6252 | { | |
78d4d2c5 JK |
6253 | struct signatured_type *sig_type; |
6254 | struct dwo_unit *dwo_tu; | |
6255 | void **slot; | |
6256 | const gdb_byte *ptr = info_ptr; | |
6257 | struct comp_unit_head header; | |
6258 | unsigned int length; | |
8b70b953 | 6259 | |
9c541725 | 6260 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6261 | |
a49dd8dd JK |
6262 | /* Initialize it due to a false compiler warning. */ |
6263 | header.signature = -1; | |
9c541725 | 6264 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6265 | |
78d4d2c5 JK |
6266 | /* We need to read the type's signature in order to build the hash |
6267 | table, but we don't need anything else just yet. */ | |
348e048f | 6268 | |
ed2dc618 | 6269 | ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, &header, section, |
43988095 | 6270 | abbrev_section, ptr, section_kind); |
348e048f | 6271 | |
4057dfde | 6272 | length = header.get_length (); |
6caca83c | 6273 | |
78d4d2c5 JK |
6274 | /* Skip dummy type units. */ |
6275 | if (ptr >= info_ptr + length | |
43988095 JK |
6276 | || peek_abbrev_code (abfd, ptr) == 0 |
6277 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
6278 | { |
6279 | info_ptr += length; | |
6280 | continue; | |
6281 | } | |
dee91e82 | 6282 | |
78d4d2c5 JK |
6283 | if (types_htab == NULL) |
6284 | { | |
6285 | if (dwo_file) | |
298e9637 | 6286 | types_htab = allocate_dwo_unit_table (); |
78d4d2c5 | 6287 | else |
298e9637 | 6288 | types_htab = allocate_signatured_type_table (); |
78d4d2c5 | 6289 | } |
8b70b953 | 6290 | |
78d4d2c5 JK |
6291 | if (dwo_file) |
6292 | { | |
6293 | sig_type = NULL; | |
5989a64e | 6294 | dwo_tu = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
78d4d2c5 JK |
6295 | struct dwo_unit); |
6296 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 6297 | dwo_tu->signature = header.signature; |
9c541725 | 6298 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6299 | dwo_tu->section = section; |
9c541725 | 6300 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6301 | dwo_tu->length = length; |
6302 | } | |
6303 | else | |
6304 | { | |
6305 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6306 | The real type_offset is in the DWO file. */ | |
6307 | dwo_tu = NULL; | |
5989a64e | 6308 | sig_type = dwarf2_per_objfile->per_bfd->allocate_signatured_type (); |
43988095 | 6309 | sig_type->signature = header.signature; |
9c541725 | 6310 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
e3b94546 | 6311 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
78d4d2c5 JK |
6312 | sig_type->per_cu.is_debug_types = 1; |
6313 | sig_type->per_cu.section = section; | |
9c541725 | 6314 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6315 | sig_type->per_cu.length = length; |
6316 | } | |
6317 | ||
b0b6a987 | 6318 | slot = htab_find_slot (types_htab.get (), |
78d4d2c5 JK |
6319 | dwo_file ? (void*) dwo_tu : (void *) sig_type, |
6320 | INSERT); | |
6321 | gdb_assert (slot != NULL); | |
6322 | if (*slot != NULL) | |
6323 | { | |
9c541725 | 6324 | sect_offset dup_sect_off; |
0349ea22 | 6325 | |
3019eac3 DE |
6326 | if (dwo_file) |
6327 | { | |
78d4d2c5 JK |
6328 | const struct dwo_unit *dup_tu |
6329 | = (const struct dwo_unit *) *slot; | |
6330 | ||
9c541725 | 6331 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6332 | } |
6333 | else | |
6334 | { | |
78d4d2c5 JK |
6335 | const struct signatured_type *dup_tu |
6336 | = (const struct signatured_type *) *slot; | |
6337 | ||
9c541725 | 6338 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6339 | } |
8b70b953 | 6340 | |
b98664d3 | 6341 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6342 | " the entry at offset %s, signature %s"), |
6343 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6344 | hex_string (header.signature)); |
78d4d2c5 JK |
6345 | } |
6346 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6347 | |
78d4d2c5 | 6348 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6349 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6350 | sect_offset_str (sect_off), | |
43988095 | 6351 | hex_string (header.signature)); |
3019eac3 | 6352 | |
78d4d2c5 JK |
6353 | info_ptr += length; |
6354 | } | |
6355 | } | |
3019eac3 | 6356 | |
78d4d2c5 JK |
6357 | /* Create the hash table of all entries in the .debug_types |
6358 | (or .debug_types.dwo) section(s). | |
6359 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6360 | otherwise it is NULL. | |
b3c8eb43 | 6361 | |
78d4d2c5 | 6362 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6363 | |
78d4d2c5 | 6364 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6365 | |
78d4d2c5 | 6366 | static void |
ed2dc618 SM |
6367 | create_debug_types_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6368 | struct dwo_file *dwo_file, | |
fd5866f6 | 6369 | gdb::array_view<dwarf2_section_info> type_sections, |
b0b6a987 | 6370 | htab_up &types_htab) |
78d4d2c5 | 6371 | { |
fd5866f6 SM |
6372 | for (dwarf2_section_info §ion : type_sections) |
6373 | create_debug_type_hash_table (dwarf2_per_objfile, dwo_file, §ion, | |
ed2dc618 | 6374 | types_htab, rcuh_kind::TYPE); |
3019eac3 DE |
6375 | } |
6376 | ||
6377 | /* Create the hash table of all entries in the .debug_types section, | |
6378 | and initialize all_type_units. | |
6379 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6380 | otherwise non-zero. */ | |
6381 | ||
6382 | static int | |
ed2dc618 | 6383 | create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
3019eac3 | 6384 | { |
b0b6a987 | 6385 | htab_up types_htab; |
3019eac3 | 6386 | |
ed2dc618 | 6387 | create_debug_type_hash_table (dwarf2_per_objfile, NULL, |
5989a64e | 6388 | &dwarf2_per_objfile->per_bfd->info, types_htab, |
43988095 | 6389 | rcuh_kind::COMPILE); |
ed2dc618 | 6390 | create_debug_types_hash_table (dwarf2_per_objfile, NULL, |
5989a64e | 6391 | dwarf2_per_objfile->per_bfd->types, types_htab); |
3019eac3 DE |
6392 | if (types_htab == NULL) |
6393 | { | |
5989a64e | 6394 | dwarf2_per_objfile->per_bfd->signatured_types = NULL; |
3019eac3 DE |
6395 | return 0; |
6396 | } | |
6397 | ||
5989a64e | 6398 | dwarf2_per_objfile->per_bfd->signatured_types = std::move (types_htab); |
348e048f | 6399 | |
5989a64e SM |
6400 | gdb_assert (dwarf2_per_objfile->per_bfd->all_type_units.empty ()); |
6401 | dwarf2_per_objfile->per_bfd->all_type_units.reserve | |
6402 | (htab_elements (dwarf2_per_objfile->per_bfd->signatured_types.get ())); | |
b2bdb8cf | 6403 | |
5989a64e | 6404 | htab_traverse_noresize (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6405 | add_signatured_type_cu_to_table, |
5989a64e | 6406 | &dwarf2_per_objfile->per_bfd->all_type_units); |
1fd400ff | 6407 | |
348e048f DE |
6408 | return 1; |
6409 | } | |
6410 | ||
5989a64e | 6411 | /* Add an entry for signature SIG to dwarf2_per_objfile->per_bfd->signatured_types. |
6aa5f3a6 DE |
6412 | If SLOT is non-NULL, it is the entry to use in the hash table. |
6413 | Otherwise we find one. */ | |
6414 | ||
6415 | static struct signatured_type * | |
ed2dc618 SM |
6416 | add_type_unit (struct dwarf2_per_objfile *dwarf2_per_objfile, ULONGEST sig, |
6417 | void **slot) | |
6aa5f3a6 | 6418 | { |
5989a64e SM |
6419 | if (dwarf2_per_objfile->per_bfd->all_type_units.size () |
6420 | == dwarf2_per_objfile->per_bfd->all_type_units.capacity ()) | |
6421 | ++dwarf2_per_objfile->per_bfd->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6422 | |
5989a64e | 6423 | signatured_type *sig_type = dwarf2_per_objfile->per_bfd->allocate_signatured_type (); |
b2bdb8cf | 6424 | |
af758d11 SM |
6425 | dwarf2_per_objfile->resize_symtabs (); |
6426 | ||
5989a64e | 6427 | dwarf2_per_objfile->per_bfd->all_type_units.push_back (sig_type); |
6aa5f3a6 DE |
6428 | sig_type->signature = sig; |
6429 | sig_type->per_cu.is_debug_types = 1; | |
5989a64e | 6430 | if (dwarf2_per_objfile->per_bfd->using_index) |
6aa5f3a6 DE |
6431 | { |
6432 | sig_type->per_cu.v.quick = | |
5989a64e | 6433 | OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
6aa5f3a6 DE |
6434 | struct dwarf2_per_cu_quick_data); |
6435 | } | |
6436 | ||
6437 | if (slot == NULL) | |
6438 | { | |
5989a64e | 6439 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 DE |
6440 | sig_type, INSERT); |
6441 | } | |
6442 | gdb_assert (*slot == NULL); | |
6443 | *slot = sig_type; | |
6444 | /* The rest of sig_type must be filled in by the caller. */ | |
6445 | return sig_type; | |
6446 | } | |
6447 | ||
a2ce51a0 DE |
6448 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6449 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6450 | ||
6451 | static void | |
ed2dc618 | 6452 | fill_in_sig_entry_from_dwo_entry (struct dwarf2_per_objfile *dwarf2_per_objfile, |
a2ce51a0 DE |
6453 | struct signatured_type *sig_entry, |
6454 | struct dwo_unit *dwo_entry) | |
6455 | { | |
1859c670 SM |
6456 | dwarf2_per_bfd *per_bfd = dwarf2_per_objfile->per_bfd; |
6457 | ||
7ee85ab1 | 6458 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
6459 | gdb_assert (! sig_entry->per_cu.queued); |
6460 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
1859c670 | 6461 | if (per_bfd->using_index) |
6aa5f3a6 DE |
6462 | { |
6463 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
af758d11 | 6464 | gdb_assert (!dwarf2_per_objfile->symtab_set_p (&sig_entry->per_cu)); |
6aa5f3a6 DE |
6465 | } |
6466 | else | |
6467 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6468 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6469 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6470 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6471 | gdb_assert (sig_entry->dwo_unit == NULL); |
6472 | ||
6473 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6474 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6475 | sig_entry->per_cu.length = dwo_entry->length; |
6476 | sig_entry->per_cu.reading_dwo_directly = 1; | |
e3b94546 | 6477 | sig_entry->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
1859c670 | 6478 | sig_entry->per_cu.per_bfd = per_bfd; |
a2ce51a0 DE |
6479 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6480 | sig_entry->dwo_unit = dwo_entry; | |
6481 | } | |
6482 | ||
6483 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6484 | If we haven't read the TU yet, create the signatured_type data structure |
6485 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6486 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6487 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6488 | containing that CU. Otherwise we could end up reading several other DWO | |
6489 | files (due to comdat folding) to process the transitive closure of all the | |
6490 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6491 | type signature that it needs. | |
a2ce51a0 DE |
6492 | We only do this for .gdb_index because in the psymtab case we already have |
6493 | to read all the DWOs to build the type unit groups. */ | |
6494 | ||
6495 | static struct signatured_type * | |
6496 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6497 | { | |
5e22e966 | 6498 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
a2ce51a0 DE |
6499 | struct dwo_file *dwo_file; |
6500 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6501 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6502 | void **slot; |
a2ce51a0 | 6503 | |
5989a64e | 6504 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->per_bfd->using_index); |
a2ce51a0 | 6505 | |
6aa5f3a6 DE |
6506 | /* If TU skeletons have been removed then we may not have read in any |
6507 | TUs yet. */ | |
5989a64e SM |
6508 | if (dwarf2_per_objfile->per_bfd->signatured_types == NULL) |
6509 | dwarf2_per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 DE |
6510 | |
6511 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6512 | Use the global signatured_types array to do our own comdat-folding |
6513 | of types. If this is the first time we're reading this TU, and | |
6514 | the TU has an entry in .gdb_index, replace the recorded data from | |
6515 | .gdb_index with this TU. */ | |
a2ce51a0 | 6516 | |
a2ce51a0 | 6517 | find_sig_entry.signature = sig; |
5989a64e | 6518 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6519 | &find_sig_entry, INSERT); |
9a3c8263 | 6520 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6521 | |
6522 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6523 | read. Don't reassign the global entry to point to this DWO if that's |
6524 | the case. Also note that if the TU is already being read, it may not | |
6525 | have come from a DWO, the program may be a mix of Fission-compiled | |
6526 | code and non-Fission-compiled code. */ | |
6527 | ||
6528 | /* Have we already tried to read this TU? | |
6529 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6530 | needn't exist in the global table yet). */ | |
6531 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6532 | return sig_entry; |
6533 | ||
6aa5f3a6 DE |
6534 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6535 | dwo_unit of the TU itself. */ | |
6536 | dwo_file = cu->dwo_unit->dwo_file; | |
6537 | ||
a2ce51a0 DE |
6538 | /* Ok, this is the first time we're reading this TU. */ |
6539 | if (dwo_file->tus == NULL) | |
6540 | return NULL; | |
6541 | find_dwo_entry.signature = sig; | |
b0b6a987 TT |
6542 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
6543 | &find_dwo_entry); | |
a2ce51a0 DE |
6544 | if (dwo_entry == NULL) |
6545 | return NULL; | |
6546 | ||
6aa5f3a6 DE |
6547 | /* If the global table doesn't have an entry for this TU, add one. */ |
6548 | if (sig_entry == NULL) | |
ed2dc618 | 6549 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6aa5f3a6 | 6550 | |
ed2dc618 | 6551 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6552 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6553 | return sig_entry; |
6554 | } | |
6555 | ||
a2ce51a0 DE |
6556 | /* Subroutine of lookup_signatured_type. |
6557 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6558 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6559 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6560 | |
6561 | static struct signatured_type * | |
6562 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6563 | { | |
5e22e966 | 6564 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 6565 | struct dwp_file *dwp_file = get_dwp_file (dwarf2_per_objfile); |
a2ce51a0 DE |
6566 | struct dwo_unit *dwo_entry; |
6567 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6568 | void **slot; |
a2ce51a0 | 6569 | |
5989a64e | 6570 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->per_bfd->using_index); |
a2ce51a0 DE |
6571 | gdb_assert (dwp_file != NULL); |
6572 | ||
6aa5f3a6 DE |
6573 | /* If TU skeletons have been removed then we may not have read in any |
6574 | TUs yet. */ | |
5989a64e SM |
6575 | if (dwarf2_per_objfile->per_bfd->signatured_types == NULL) |
6576 | dwarf2_per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
a2ce51a0 | 6577 | |
6aa5f3a6 | 6578 | find_sig_entry.signature = sig; |
5989a64e | 6579 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
6aa5f3a6 | 6580 | &find_sig_entry, INSERT); |
9a3c8263 | 6581 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6582 | |
6583 | /* Have we already tried to read this TU? | |
6584 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6585 | needn't exist in the global table yet). */ | |
6586 | if (sig_entry != NULL) | |
6587 | return sig_entry; | |
6588 | ||
a2ce51a0 DE |
6589 | if (dwp_file->tus == NULL) |
6590 | return NULL; | |
ed2dc618 | 6591 | dwo_entry = lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, NULL, |
57d63ce2 | 6592 | sig, 1 /* is_debug_types */); |
a2ce51a0 DE |
6593 | if (dwo_entry == NULL) |
6594 | return NULL; | |
6595 | ||
ed2dc618 SM |
6596 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6597 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6598 | |
a2ce51a0 DE |
6599 | return sig_entry; |
6600 | } | |
6601 | ||
380bca97 | 6602 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
6603 | Returns NULL if signature SIG is not present in the table. |
6604 | It is up to the caller to complain about this. */ | |
348e048f DE |
6605 | |
6606 | static struct signatured_type * | |
a2ce51a0 | 6607 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 6608 | { |
5e22e966 | 6609 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 6610 | |
a2ce51a0 | 6611 | if (cu->dwo_unit |
5989a64e | 6612 | && dwarf2_per_objfile->per_bfd->using_index) |
a2ce51a0 DE |
6613 | { |
6614 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
6615 | These cases require special processing. */ | |
ed2dc618 | 6616 | if (get_dwp_file (dwarf2_per_objfile) == NULL) |
a2ce51a0 DE |
6617 | return lookup_dwo_signatured_type (cu, sig); |
6618 | else | |
6619 | return lookup_dwp_signatured_type (cu, sig); | |
6620 | } | |
6621 | else | |
6622 | { | |
6623 | struct signatured_type find_entry, *entry; | |
348e048f | 6624 | |
5989a64e | 6625 | if (dwarf2_per_objfile->per_bfd->signatured_types == NULL) |
a2ce51a0 DE |
6626 | return NULL; |
6627 | find_entry.signature = sig; | |
9a3c8263 | 6628 | entry = ((struct signatured_type *) |
5989a64e | 6629 | htab_find (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 6630 | &find_entry)); |
a2ce51a0 DE |
6631 | return entry; |
6632 | } | |
348e048f | 6633 | } |
18a8505e | 6634 | |
42e7ad6c | 6635 | /* Low level DIE reading support. */ |
348e048f | 6636 | |
d85a05f0 DJ |
6637 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
6638 | ||
6639 | static void | |
6640 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 6641 | struct dwarf2_cu *cu, |
3019eac3 | 6642 | struct dwarf2_section_info *section, |
685af9cd TT |
6643 | struct dwo_file *dwo_file, |
6644 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 6645 | { |
fceca515 | 6646 | gdb_assert (section->readin && section->buffer != NULL); |
96b79293 | 6647 | reader->abfd = section->get_bfd_owner (); |
d85a05f0 | 6648 | reader->cu = cu; |
3019eac3 | 6649 | reader->dwo_file = dwo_file; |
dee91e82 DE |
6650 | reader->die_section = section; |
6651 | reader->buffer = section->buffer; | |
f664829e | 6652 | reader->buffer_end = section->buffer + section->size; |
685af9cd | 6653 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
6654 | } |
6655 | ||
c0ab21c2 | 6656 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6657 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. |
c0ab21c2 | 6658 | There's just a lot of work to do, and cutu_reader is big enough |
b0c7bfa9 DE |
6659 | already. |
6660 | ||
6661 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
6662 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
6663 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
6664 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
6665 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
6666 | STUB_COMP_DIR may be non-NULL. | |
3e225074 | 6667 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE |
b0c7bfa9 | 6668 | are filled in with the info of the DIE from the DWO file. |
685af9cd TT |
6669 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
6670 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
6671 | kept around for at least as long as *RESULT_READER. | |
6672 | ||
b0c7bfa9 DE |
6673 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
6674 | ||
6675 | static int | |
6676 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
6677 | struct dwo_unit *dwo_unit, | |
b0c7bfa9 | 6678 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 6679 | const char *stub_comp_dir, |
b0c7bfa9 | 6680 | struct die_reader_specs *result_reader, |
d521ce57 | 6681 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 6682 | struct die_info **result_comp_unit_die, |
685af9cd | 6683 | abbrev_table_up *result_dwo_abbrev_table) |
b0c7bfa9 | 6684 | { |
ed2dc618 | 6685 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
b0c7bfa9 DE |
6686 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
6687 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 6688 | bfd *abfd; |
d521ce57 | 6689 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
6690 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
6691 | int i,num_extra_attrs; | |
6692 | struct dwarf2_section_info *dwo_abbrev_section; | |
b0c7bfa9 DE |
6693 | struct die_info *comp_unit_die; |
6694 | ||
b0aeadb3 DE |
6695 | /* At most one of these may be provided. */ |
6696 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 6697 | |
b0c7bfa9 DE |
6698 | /* These attributes aren't processed until later: |
6699 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
6700 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
6701 | referenced later. However, these attributes are found in the stub | |
6702 | which we won't have later. In order to not impose this complication | |
6703 | on the rest of the code, we read them here and copy them to the | |
6704 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
6705 | |
6706 | stmt_list = NULL; | |
6707 | low_pc = NULL; | |
6708 | high_pc = NULL; | |
6709 | ranges = NULL; | |
6710 | comp_dir = NULL; | |
6711 | ||
6712 | if (stub_comp_unit_die != NULL) | |
6713 | { | |
6714 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
6715 | DWO file. */ | |
6716 | if (! this_cu->is_debug_types) | |
6717 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
6718 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
6719 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
6720 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
6721 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
6722 | ||
a39fdb41 | 6723 | cu->addr_base = stub_comp_unit_die->addr_base (); |
b0c7bfa9 | 6724 | |
18a8505e AT |
6725 | /* There should be a DW_AT_rnglists_base (DW_AT_GNU_ranges_base) attribute |
6726 | here (if needed). We need the value before we can process | |
6727 | DW_AT_ranges. */ | |
a39fdb41 | 6728 | cu->ranges_base = stub_comp_unit_die->ranges_base (); |
b0c7bfa9 | 6729 | } |
a2ce51a0 DE |
6730 | else if (stub_comp_dir != NULL) |
6731 | { | |
6732 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 6733 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
6734 | comp_dir->name = DW_AT_comp_dir; |
6735 | comp_dir->form = DW_FORM_string; | |
6736 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
6737 | DW_STRING (comp_dir) = stub_comp_dir; | |
6738 | } | |
b0c7bfa9 DE |
6739 | |
6740 | /* Set up for reading the DWO CU/TU. */ | |
6741 | cu->dwo_unit = dwo_unit; | |
685af9cd | 6742 | dwarf2_section_info *section = dwo_unit->section; |
96b79293 TT |
6743 | section->read (objfile); |
6744 | abfd = section->get_bfd_owner (); | |
9c541725 PA |
6745 | begin_info_ptr = info_ptr = (section->buffer |
6746 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 6747 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 DE |
6748 | |
6749 | if (this_cu->is_debug_types) | |
6750 | { | |
b0c7bfa9 DE |
6751 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
6752 | ||
ed2dc618 SM |
6753 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6754 | &cu->header, section, | |
b0c7bfa9 | 6755 | dwo_abbrev_section, |
43988095 | 6756 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 6757 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 6758 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
6759 | { |
6760 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 6761 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 6762 | hex_string (sig_type->signature), |
43988095 | 6763 | hex_string (cu->header.signature), |
9d8780f0 | 6764 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
6765 | bfd_get_filename (abfd)); |
6766 | } | |
9c541725 | 6767 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6768 | /* For DWOs coming from DWP files, we don't know the CU length |
6769 | nor the type's offset in the TU until now. */ | |
4057dfde | 6770 | dwo_unit->length = cu->header.get_length (); |
9c541725 | 6771 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
6772 | |
6773 | /* Establish the type offset that can be used to lookup the type. | |
6774 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
6775 | sig_type->type_offset_in_section |
6776 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
6777 | } |
6778 | else | |
6779 | { | |
ed2dc618 SM |
6780 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
6781 | &cu->header, section, | |
b0c7bfa9 | 6782 | dwo_abbrev_section, |
43988095 | 6783 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 6784 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
6785 | /* For DWOs coming from DWP files, we don't know the CU length |
6786 | until now. */ | |
4057dfde | 6787 | dwo_unit->length = cu->header.get_length (); |
b0c7bfa9 DE |
6788 | } |
6789 | ||
685af9cd | 6790 | *result_dwo_abbrev_table |
86de1d91 TT |
6791 | = abbrev_table::read (objfile, dwo_abbrev_section, |
6792 | cu->header.abbrev_sect_off); | |
685af9cd TT |
6793 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, |
6794 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
6795 | |
6796 | /* Read in the die, but leave space to copy over the attributes | |
6797 | from the stub. This has the benefit of simplifying the rest of | |
6798 | the code - all the work to maintain the illusion of a single | |
6799 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
6800 | num_extra_attrs = ((stmt_list != NULL) | |
6801 | + (low_pc != NULL) | |
6802 | + (high_pc != NULL) | |
6803 | + (ranges != NULL) | |
6804 | + (comp_dir != NULL)); | |
6805 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
3e225074 | 6806 | num_extra_attrs); |
b0c7bfa9 DE |
6807 | |
6808 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
6809 | comp_unit_die = *result_comp_unit_die; | |
6810 | i = comp_unit_die->num_attrs; | |
6811 | if (stmt_list != NULL) | |
6812 | comp_unit_die->attrs[i++] = *stmt_list; | |
6813 | if (low_pc != NULL) | |
6814 | comp_unit_die->attrs[i++] = *low_pc; | |
6815 | if (high_pc != NULL) | |
6816 | comp_unit_die->attrs[i++] = *high_pc; | |
6817 | if (ranges != NULL) | |
6818 | comp_unit_die->attrs[i++] = *ranges; | |
6819 | if (comp_dir != NULL) | |
6820 | comp_unit_die->attrs[i++] = *comp_dir; | |
6821 | comp_unit_die->num_attrs += num_extra_attrs; | |
6822 | ||
b4f54984 | 6823 | if (dwarf_die_debug) |
bf6af496 DE |
6824 | { |
6825 | fprintf_unfiltered (gdb_stdlog, | |
6826 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 6827 | section->get_name (), |
bf6af496 DE |
6828 | (unsigned) (begin_info_ptr - section->buffer), |
6829 | bfd_get_filename (abfd)); | |
b4f54984 | 6830 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
6831 | } |
6832 | ||
b0c7bfa9 DE |
6833 | /* Skip dummy compilation units. */ |
6834 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
6835 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
6836 | return 0; | |
6837 | ||
6838 | *result_info_ptr = info_ptr; | |
6839 | return 1; | |
6840 | } | |
6841 | ||
a084a2a6 AT |
6842 | /* Return the signature of the compile unit, if found. In DWARF 4 and before, |
6843 | the signature is in the DW_AT_GNU_dwo_id attribute. In DWARF 5 and later, the | |
6844 | signature is part of the header. */ | |
6845 | static gdb::optional<ULONGEST> | |
6846 | lookup_dwo_id (struct dwarf2_cu *cu, struct die_info* comp_unit_die) | |
6847 | { | |
6848 | if (cu->header.version >= 5) | |
6849 | return cu->header.signature; | |
6850 | struct attribute *attr; | |
6851 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
6852 | if (attr == nullptr) | |
6853 | return gdb::optional<ULONGEST> (); | |
6854 | return DW_UNSND (attr); | |
6855 | } | |
6856 | ||
c0ab21c2 | 6857 | /* Subroutine of cutu_reader to simplify it. |
b0c7bfa9 | 6858 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. |
6a506a2d | 6859 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
6860 | |
6861 | static struct dwo_unit * | |
6862 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
c0ab21c2 TT |
6863 | struct die_info *comp_unit_die, |
6864 | const char *dwo_name) | |
b0c7bfa9 DE |
6865 | { |
6866 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 6867 | struct dwo_unit *dwo_unit; |
c0ab21c2 | 6868 | const char *comp_dir; |
b0c7bfa9 | 6869 | |
a2ce51a0 DE |
6870 | gdb_assert (cu != NULL); |
6871 | ||
b0c7bfa9 | 6872 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
a084a2a6 | 6873 | dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
7d45c7c3 | 6874 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
b0c7bfa9 DE |
6875 | |
6876 | if (this_cu->is_debug_types) | |
6877 | { | |
6878 | struct signatured_type *sig_type; | |
6879 | ||
6880 | /* Since this_cu is the first member of struct signatured_type, | |
6881 | we can go from a pointer to one to a pointer to the other. */ | |
6882 | sig_type = (struct signatured_type *) this_cu; | |
b0c7bfa9 DE |
6883 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); |
6884 | } | |
6885 | else | |
6886 | { | |
a084a2a6 AT |
6887 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
6888 | if (!signature.has_value ()) | |
b0c7bfa9 DE |
6889 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" |
6890 | " [in module %s]"), | |
313bad1b | 6891 | dwo_name, bfd_get_filename (this_cu->per_bfd->obfd)); |
b0c7bfa9 | 6892 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, |
a084a2a6 | 6893 | *signature); |
b0c7bfa9 DE |
6894 | } |
6895 | ||
b0c7bfa9 DE |
6896 | return dwo_unit; |
6897 | } | |
6898 | ||
c0ab21c2 | 6899 | /* Subroutine of cutu_reader to simplify it. |
6aa5f3a6 | 6900 | See it for a description of the parameters. |
fcd3b13d | 6901 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 | 6902 | |
c0ab21c2 | 6903 | void |
9e021579 SM |
6904 | cutu_reader::init_tu_and_read_dwo_dies (dwarf2_per_cu_data *this_cu, |
6905 | dwarf2_per_objfile *per_objfile, | |
6751ebae | 6906 | int use_existing_cu) |
a2ce51a0 | 6907 | { |
a2ce51a0 | 6908 | struct signatured_type *sig_type; |
a2ce51a0 DE |
6909 | |
6910 | /* Verify we can do the following downcast, and that we have the | |
6911 | data we need. */ | |
6912 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
6913 | sig_type = (struct signatured_type *) this_cu; | |
6914 | gdb_assert (sig_type->dwo_unit != NULL); | |
6915 | ||
6aa5f3a6 DE |
6916 | if (use_existing_cu && this_cu->cu != NULL) |
6917 | { | |
6918 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 | 6919 | /* There's no need to do the rereading_dwo_cu handling that |
c0ab21c2 | 6920 | cutu_reader does since we don't read the stub. */ |
6aa5f3a6 DE |
6921 | } |
6922 | else | |
6923 | { | |
6924 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
6925 | gdb_assert (this_cu->cu == NULL); | |
9e021579 | 6926 | m_new_cu.reset (new dwarf2_cu (this_cu, per_objfile)); |
6aa5f3a6 DE |
6927 | } |
6928 | ||
6929 | /* A future optimization, if needed, would be to use an existing | |
6930 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
6931 | could share abbrev tables. */ | |
a2ce51a0 DE |
6932 | |
6933 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, | |
a2ce51a0 DE |
6934 | NULL /* stub_comp_unit_die */, |
6935 | sig_type->dwo_unit->dwo_file->comp_dir, | |
4ebe4877 | 6936 | this, &info_ptr, |
3e225074 | 6937 | &comp_unit_die, |
c0ab21c2 | 6938 | &m_dwo_abbrev_table) == 0) |
a2ce51a0 DE |
6939 | { |
6940 | /* Dummy die. */ | |
c0ab21c2 | 6941 | dummy_p = true; |
a2ce51a0 | 6942 | } |
a2ce51a0 DE |
6943 | } |
6944 | ||
fd820528 | 6945 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 6946 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 6947 | |
f4dc4d17 DE |
6948 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
6949 | Otherwise the table specified in the comp unit header is read in and used. | |
6950 | This is an optimization for when we already have the abbrev table. | |
6951 | ||
dee91e82 | 6952 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
6751ebae | 6953 | Otherwise, a new CU is allocated with xmalloc. */ |
aaa75496 | 6954 | |
c0ab21c2 TT |
6955 | cutu_reader::cutu_reader (struct dwarf2_per_cu_data *this_cu, |
6956 | struct abbrev_table *abbrev_table, | |
6751ebae | 6957 | int use_existing_cu, |
c0ab21c2 TT |
6958 | bool skip_partial) |
6959 | : die_reader_specs {}, | |
6751ebae | 6960 | m_this_cu (this_cu) |
c906108c | 6961 | { |
ed2dc618 | 6962 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 6963 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 6964 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 6965 | bfd *abfd = section->get_bfd_owner (); |
dee91e82 | 6966 | struct dwarf2_cu *cu; |
c0ab21c2 | 6967 | const gdb_byte *begin_info_ptr; |
dee91e82 | 6968 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 6969 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
6970 | /* Non-zero if CU currently points to a DWO file and we need to |
6971 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 6972 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 6973 | int rereading_dwo_cu = 0; |
c906108c | 6974 | |
b4f54984 | 6975 | if (dwarf_die_debug) |
9d8780f0 | 6976 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 6977 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 6978 | sect_offset_str (this_cu->sect_off)); |
09406207 | 6979 | |
a2ce51a0 DE |
6980 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
6981 | file (instead of going through the stub), short-circuit all of this. */ | |
6982 | if (this_cu->reading_dwo_directly) | |
6983 | { | |
6984 | /* Narrow down the scope of possibilities to have to understand. */ | |
6985 | gdb_assert (this_cu->is_debug_types); | |
6986 | gdb_assert (abbrev_table == NULL); | |
9e021579 | 6987 | init_tu_and_read_dwo_dies (this_cu, dwarf2_per_objfile, use_existing_cu); |
a2ce51a0 DE |
6988 | return; |
6989 | } | |
6990 | ||
dee91e82 | 6991 | /* This is cheap if the section is already read in. */ |
96b79293 | 6992 | section->read (objfile); |
dee91e82 | 6993 | |
9c541725 | 6994 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
6995 | |
6996 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
6997 | |
6998 | if (use_existing_cu && this_cu->cu != NULL) | |
6999 | { | |
7000 | cu = this_cu->cu; | |
42e7ad6c DE |
7001 | /* If this CU is from a DWO file we need to start over, we need to |
7002 | refetch the attributes from the skeleton CU. | |
7003 | This could be optimized by retrieving those attributes from when we | |
7004 | were here the first time: the previous comp_unit_die was stored in | |
7005 | comp_unit_obstack. But there's no data yet that we need this | |
7006 | optimization. */ | |
7007 | if (cu->dwo_unit != NULL) | |
7008 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7009 | } |
7010 | else | |
7011 | { | |
7012 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7013 | gdb_assert (this_cu->cu == NULL); | |
9e021579 | 7014 | m_new_cu.reset (new dwarf2_cu (this_cu, dwarf2_per_objfile)); |
c0ab21c2 | 7015 | cu = m_new_cu.get (); |
42e7ad6c | 7016 | } |
dee91e82 | 7017 | |
b0c7bfa9 | 7018 | /* Get the header. */ |
9c541725 | 7019 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7020 | { |
7021 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7022 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7023 | } |
7024 | else | |
7025 | { | |
3019eac3 | 7026 | if (this_cu->is_debug_types) |
dee91e82 | 7027 | { |
ed2dc618 SM |
7028 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7029 | &cu->header, section, | |
4bdcc0c1 | 7030 | abbrev_section, info_ptr, |
43988095 | 7031 | rcuh_kind::TYPE); |
dee91e82 | 7032 | |
42e7ad6c DE |
7033 | /* Since per_cu is the first member of struct signatured_type, |
7034 | we can go from a pointer to one to a pointer to the other. */ | |
7035 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7036 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7037 | gdb_assert (sig_type->type_offset_in_tu |
7038 | == cu->header.type_cu_offset_in_tu); | |
7039 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7040 | |
42e7ad6c DE |
7041 | /* LENGTH has not been set yet for type units if we're |
7042 | using .gdb_index. */ | |
4057dfde | 7043 | this_cu->length = cu->header.get_length (); |
3019eac3 DE |
7044 | |
7045 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7046 | sig_type->type_offset_in_section = |
7047 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7048 | |
7049 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7050 | } |
7051 | else | |
7052 | { | |
ed2dc618 SM |
7053 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7054 | &cu->header, section, | |
4bdcc0c1 | 7055 | abbrev_section, |
43988095 JK |
7056 | info_ptr, |
7057 | rcuh_kind::COMPILE); | |
dee91e82 | 7058 | |
9c541725 | 7059 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
3ee6bb11 TV |
7060 | if (this_cu->length == 0) |
7061 | this_cu->length = cu->header.get_length (); | |
7062 | else | |
7063 | gdb_assert (this_cu->length == cu->header.get_length ()); | |
43988095 | 7064 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7065 | } |
7066 | } | |
10b3939b | 7067 | |
6caca83c | 7068 | /* Skip dummy compilation units. */ |
dee91e82 | 7069 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7070 | || peek_abbrev_code (abfd, info_ptr) == 0) |
c0ab21c2 TT |
7071 | { |
7072 | dummy_p = true; | |
7073 | return; | |
7074 | } | |
6caca83c | 7075 | |
433df2d4 DE |
7076 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7077 | And if we need to read them now, make sure they're freed when we're | |
c0ab21c2 | 7078 | done. */ |
f4dc4d17 | 7079 | if (abbrev_table != NULL) |
685af9cd TT |
7080 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7081 | else | |
f4dc4d17 | 7082 | { |
c0ab21c2 | 7083 | m_abbrev_table_holder |
86de1d91 TT |
7084 | = abbrev_table::read (objfile, abbrev_section, |
7085 | cu->header.abbrev_sect_off); | |
c0ab21c2 | 7086 | abbrev_table = m_abbrev_table_holder.get (); |
42e7ad6c | 7087 | } |
af703f96 | 7088 | |
dee91e82 | 7089 | /* Read the top level CU/TU die. */ |
c0ab21c2 | 7090 | init_cu_die_reader (this, cu, section, NULL, abbrev_table); |
3e225074 | 7091 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
93311388 | 7092 | |
58f0c718 | 7093 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
c0ab21c2 TT |
7094 | { |
7095 | dummy_p = true; | |
7096 | return; | |
7097 | } | |
58f0c718 | 7098 | |
b0c7bfa9 | 7099 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7100 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7101 | table from the DWO file and pass the ownership over to us. It will be | |
7102 | referenced from READER, so we must make sure to free it after we're done | |
7103 | with READER. | |
7104 | ||
b0c7bfa9 DE |
7105 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7106 | DWO CU, that this test will fail (the attribute will not be present). */ | |
a084a2a6 | 7107 | const char *dwo_name = dwarf2_dwo_name (comp_unit_die, cu); |
a084a2a6 | 7108 | if (dwo_name != nullptr) |
3019eac3 | 7109 | { |
3019eac3 | 7110 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7111 | struct die_info *dwo_comp_unit_die; |
3019eac3 | 7112 | |
3e225074 | 7113 | if (comp_unit_die->has_children) |
6a506a2d | 7114 | { |
b98664d3 | 7115 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7116 | " has children (offset %s) [in module %s]"), |
7117 | sect_offset_str (this_cu->sect_off), | |
7118 | bfd_get_filename (abfd)); | |
6a506a2d | 7119 | } |
c0ab21c2 | 7120 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die, dwo_name); |
6a506a2d | 7121 | if (dwo_unit != NULL) |
3019eac3 | 7122 | { |
6a506a2d | 7123 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
a2ce51a0 | 7124 | comp_unit_die, NULL, |
c0ab21c2 | 7125 | this, &info_ptr, |
3e225074 | 7126 | &dwo_comp_unit_die, |
c0ab21c2 | 7127 | &m_dwo_abbrev_table) == 0) |
6a506a2d DE |
7128 | { |
7129 | /* Dummy die. */ | |
c0ab21c2 | 7130 | dummy_p = true; |
6a506a2d DE |
7131 | return; |
7132 | } | |
7133 | comp_unit_die = dwo_comp_unit_die; | |
7134 | } | |
7135 | else | |
7136 | { | |
7137 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7138 | the stub. A complaint has already been logged. There's | |
7139 | not much more we can do except pass on the stub DIE to | |
7140 | die_reader_func. We don't want to throw an error on bad | |
7141 | debug info. */ | |
3019eac3 DE |
7142 | } |
7143 | } | |
c0ab21c2 | 7144 | } |
3019eac3 | 7145 | |
6751ebae TT |
7146 | void |
7147 | cutu_reader::keep () | |
c0ab21c2 | 7148 | { |
b0c7bfa9 | 7149 | /* Done, clean up. */ |
6751ebae TT |
7150 | gdb_assert (!dummy_p); |
7151 | if (m_new_cu != NULL) | |
348e048f | 7152 | { |
c0ab21c2 TT |
7153 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7154 | = m_this_cu->dwarf2_per_objfile; | |
fcd3b13d | 7155 | /* Link this CU into read_in_chain. */ |
5989a64e SM |
7156 | m_this_cu->cu->read_in_chain = dwarf2_per_objfile->per_bfd->read_in_chain; |
7157 | dwarf2_per_objfile->per_bfd->read_in_chain = m_this_cu; | |
fcd3b13d | 7158 | /* The chain owns it now. */ |
c0ab21c2 | 7159 | m_new_cu.release (); |
348e048f | 7160 | } |
dee91e82 DE |
7161 | } |
7162 | ||
18a8505e AT |
7163 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name (DW_AT_dwo_name) |
7164 | if present. DWO_FILE, if non-NULL, is the DWO file to read (the caller is | |
7165 | assumed to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7166 | |
7167 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7168 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7169 | |
7170 | We fill in THIS_CU->length. | |
7171 | ||
dee91e82 | 7172 | THIS_CU->cu is always freed when done. |
3019eac3 | 7173 | This is done in order to not leave THIS_CU->cu in a state where we have |
18a8505e AT |
7174 | to care whether it refers to the "main" CU or the DWO CU. |
7175 | ||
7176 | When parent_cu is passed, it is used to provide a default value for | |
7177 | str_offsets_base and addr_base from the parent. */ | |
dee91e82 | 7178 | |
c0ab21c2 TT |
7179 | cutu_reader::cutu_reader (struct dwarf2_per_cu_data *this_cu, |
7180 | struct dwarf2_cu *parent_cu, | |
7181 | struct dwo_file *dwo_file) | |
7182 | : die_reader_specs {}, | |
7183 | m_this_cu (this_cu) | |
dee91e82 | 7184 | { |
ed2dc618 | 7185 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7186 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7187 | struct dwarf2_section_info *section = this_cu->section; |
96b79293 | 7188 | bfd *abfd = section->get_bfd_owner (); |
33e80786 | 7189 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7190 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7191 | |
b4f54984 | 7192 | if (dwarf_die_debug) |
9d8780f0 | 7193 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7194 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7195 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7196 | |
dee91e82 DE |
7197 | gdb_assert (this_cu->cu == NULL); |
7198 | ||
33e80786 DE |
7199 | abbrev_section = (dwo_file != NULL |
7200 | ? &dwo_file->sections.abbrev | |
7201 | : get_abbrev_section_for_cu (this_cu)); | |
7202 | ||
dee91e82 | 7203 | /* This is cheap if the section is already read in. */ |
96b79293 | 7204 | section->read (objfile); |
dee91e82 | 7205 | |
9e021579 | 7206 | m_new_cu.reset (new dwarf2_cu (this_cu, dwarf2_per_objfile)); |
dee91e82 | 7207 | |
9c541725 | 7208 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
ed2dc618 | 7209 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
c0ab21c2 | 7210 | &m_new_cu->header, section, |
4bdcc0c1 | 7211 | abbrev_section, info_ptr, |
43988095 JK |
7212 | (this_cu->is_debug_types |
7213 | ? rcuh_kind::TYPE | |
7214 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7215 | |
18a8505e AT |
7216 | if (parent_cu != nullptr) |
7217 | { | |
c0ab21c2 TT |
7218 | m_new_cu->str_offsets_base = parent_cu->str_offsets_base; |
7219 | m_new_cu->addr_base = parent_cu->addr_base; | |
18a8505e | 7220 | } |
4057dfde | 7221 | this_cu->length = m_new_cu->header.get_length (); |
dee91e82 DE |
7222 | |
7223 | /* Skip dummy compilation units. */ | |
7224 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7225 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c0ab21c2 TT |
7226 | { |
7227 | dummy_p = true; | |
7228 | return; | |
7229 | } | |
72bf9492 | 7230 | |
c0ab21c2 | 7231 | m_abbrev_table_holder |
86de1d91 TT |
7232 | = abbrev_table::read (objfile, abbrev_section, |
7233 | m_new_cu->header.abbrev_sect_off); | |
dee91e82 | 7234 | |
c0ab21c2 TT |
7235 | init_cu_die_reader (this, m_new_cu.get (), section, dwo_file, |
7236 | m_abbrev_table_holder.get ()); | |
3e225074 | 7237 | info_ptr = read_full_die (this, &comp_unit_die, info_ptr); |
dee91e82 DE |
7238 | } |
7239 | ||
0018ea6f DE |
7240 | \f |
7241 | /* Type Unit Groups. | |
dee91e82 | 7242 | |
0018ea6f DE |
7243 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7244 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7245 | so that all types coming from the same compilation (.o file) are grouped | |
7246 | together. A future step could be to put the types in the same symtab as | |
7247 | the CU the types ultimately came from. */ | |
ff013f42 | 7248 | |
f4dc4d17 DE |
7249 | static hashval_t |
7250 | hash_type_unit_group (const void *item) | |
7251 | { | |
9a3c8263 SM |
7252 | const struct type_unit_group *tu_group |
7253 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7254 | |
094b34ac | 7255 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7256 | } |
348e048f DE |
7257 | |
7258 | static int | |
f4dc4d17 | 7259 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7260 | { |
9a3c8263 SM |
7261 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7262 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7263 | |
094b34ac | 7264 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7265 | } |
348e048f | 7266 | |
f4dc4d17 DE |
7267 | /* Allocate a hash table for type unit groups. */ |
7268 | ||
eaa5fa8b | 7269 | static htab_up |
298e9637 | 7270 | allocate_type_unit_groups_table () |
f4dc4d17 | 7271 | { |
eaa5fa8b TT |
7272 | return htab_up (htab_create_alloc (3, |
7273 | hash_type_unit_group, | |
7274 | eq_type_unit_group, | |
7275 | NULL, xcalloc, xfree)); | |
f4dc4d17 | 7276 | } |
dee91e82 | 7277 | |
f4dc4d17 DE |
7278 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7279 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7280 | of any one psymtab grow too big. */ | |
7281 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7282 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7283 | |
094b34ac | 7284 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7285 | Create the type_unit_group object used to hold one or more TUs. */ |
7286 | ||
7287 | static struct type_unit_group * | |
094b34ac | 7288 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7289 | { |
5e22e966 | 7290 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
1859c670 | 7291 | dwarf2_per_bfd *per_bfd = dwarf2_per_objfile->per_bfd; |
094b34ac | 7292 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7293 | struct type_unit_group *tu_group; |
f4dc4d17 | 7294 | |
5989a64e | 7295 | tu_group = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
f4dc4d17 | 7296 | struct type_unit_group); |
094b34ac | 7297 | per_cu = &tu_group->per_cu; |
518817b3 | 7298 | per_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
1859c670 | 7299 | per_cu->per_bfd = per_bfd; |
f4dc4d17 | 7300 | |
1859c670 | 7301 | if (per_bfd->using_index) |
094b34ac | 7302 | { |
1859c670 | 7303 | per_cu->v.quick = OBSTACK_ZALLOC (&per_bfd->obstack, |
094b34ac | 7304 | struct dwarf2_per_cu_quick_data); |
094b34ac DE |
7305 | } |
7306 | else | |
7307 | { | |
9c541725 | 7308 | unsigned int line_offset = to_underlying (line_offset_struct); |
891813be | 7309 | dwarf2_psymtab *pst; |
528e1572 | 7310 | std::string name; |
094b34ac DE |
7311 | |
7312 | /* Give the symtab a useful name for debug purposes. */ | |
7313 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7314 | name = string_printf ("<type_units_%d>", |
7315 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7316 | else |
528e1572 | 7317 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7318 | |
528e1572 | 7319 | pst = create_partial_symtab (per_cu, name.c_str ()); |
6d94535f | 7320 | pst->anonymous = true; |
094b34ac | 7321 | } |
f4dc4d17 | 7322 | |
094b34ac | 7323 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7324 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7325 | |
7326 | return tu_group; | |
7327 | } | |
7328 | ||
094b34ac DE |
7329 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7330 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7331 | |
7332 | static struct type_unit_group * | |
ff39bb5e | 7333 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7334 | { |
5e22e966 | 7335 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
5989a64e | 7336 | struct tu_stats *tu_stats = &dwarf2_per_objfile->per_bfd->tu_stats; |
f4dc4d17 DE |
7337 | struct type_unit_group *tu_group; |
7338 | void **slot; | |
7339 | unsigned int line_offset; | |
7340 | struct type_unit_group type_unit_group_for_lookup; | |
7341 | ||
5989a64e SM |
7342 | if (dwarf2_per_objfile->per_bfd->type_unit_groups == NULL) |
7343 | dwarf2_per_objfile->per_bfd->type_unit_groups = allocate_type_unit_groups_table (); | |
f4dc4d17 DE |
7344 | |
7345 | /* Do we need to create a new group, or can we use an existing one? */ | |
7346 | ||
7347 | if (stmt_list) | |
7348 | { | |
7349 | line_offset = DW_UNSND (stmt_list); | |
7350 | ++tu_stats->nr_symtab_sharers; | |
7351 | } | |
7352 | else | |
7353 | { | |
7354 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7355 | We can do various things here like create one group per TU or | |
7356 | spread them over multiple groups to split up the expansion work. | |
7357 | To avoid worst case scenarios (too many groups or too large groups) | |
7358 | we, umm, group them in bunches. */ | |
7359 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7360 | | (tu_stats->nr_stmt_less_type_units | |
7361 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7362 | ++tu_stats->nr_stmt_less_type_units; | |
7363 | } | |
7364 | ||
094b34ac | 7365 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7366 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
5989a64e | 7367 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->type_unit_groups.get (), |
f4dc4d17 DE |
7368 | &type_unit_group_for_lookup, INSERT); |
7369 | if (*slot != NULL) | |
7370 | { | |
9a3c8263 | 7371 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7372 | gdb_assert (tu_group != NULL); |
7373 | } | |
7374 | else | |
7375 | { | |
9c541725 | 7376 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7377 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7378 | *slot = tu_group; |
7379 | ++tu_stats->nr_symtabs; | |
7380 | } | |
7381 | ||
7382 | return tu_group; | |
7383 | } | |
0018ea6f DE |
7384 | \f |
7385 | /* Partial symbol tables. */ | |
7386 | ||
7387 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7388 | ||
7389 | The caller must fill in the following details: | |
7390 | dirname, textlow, texthigh. */ | |
7391 | ||
891813be | 7392 | static dwarf2_psymtab * |
0018ea6f DE |
7393 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) |
7394 | { | |
e3b94546 | 7395 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
891813be | 7396 | dwarf2_psymtab *pst; |
0018ea6f | 7397 | |
9f4e76a4 | 7398 | pst = new dwarf2_psymtab (name, objfile, per_cu); |
0018ea6f | 7399 | |
6d94535f | 7400 | pst->psymtabs_addrmap_supported = true; |
0018ea6f DE |
7401 | |
7402 | /* This is the glue that links PST into GDB's symbol API. */ | |
0018ea6f DE |
7403 | per_cu->v.psymtab = pst; |
7404 | ||
7405 | return pst; | |
7406 | } | |
7407 | ||
c0ab21c2 | 7408 | /* DIE reader function for process_psymtab_comp_unit. */ |
0018ea6f DE |
7409 | |
7410 | static void | |
7411 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7412 | const gdb_byte *info_ptr, |
0018ea6f | 7413 | struct die_info *comp_unit_die, |
c0ab21c2 | 7414 | enum language pretend_language) |
0018ea6f DE |
7415 | { |
7416 | struct dwarf2_cu *cu = reader->cu; | |
5e22e966 | 7417 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 7418 | struct gdbarch *gdbarch = objfile->arch (); |
0018ea6f | 7419 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7420 | CORE_ADDR baseaddr; |
7421 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
891813be | 7422 | dwarf2_psymtab *pst; |
3a2b436a | 7423 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7424 | const char *filename; |
0018ea6f | 7425 | |
0018ea6f DE |
7426 | gdb_assert (! per_cu->is_debug_types); |
7427 | ||
c0ab21c2 | 7428 | prepare_one_comp_unit (cu, comp_unit_die, pretend_language); |
0018ea6f | 7429 | |
0018ea6f | 7430 | /* Allocate a new partial symbol table structure. */ |
2e927613 TV |
7431 | gdb::unique_xmalloc_ptr<char> debug_filename; |
7432 | static const char artificial[] = "<artificial>"; | |
7d45c7c3 KB |
7433 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7434 | if (filename == NULL) | |
0018ea6f | 7435 | filename = ""; |
2e927613 TV |
7436 | else if (strcmp (filename, artificial) == 0) |
7437 | { | |
7438 | debug_filename.reset (concat (artificial, "@", | |
85f0dd3c TV |
7439 | sect_offset_str (per_cu->sect_off), |
7440 | (char *) NULL)); | |
2e927613 TV |
7441 | filename = debug_filename.get (); |
7442 | } | |
0018ea6f DE |
7443 | |
7444 | pst = create_partial_symtab (per_cu, filename); | |
7445 | ||
7446 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7447 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f | 7448 | |
b3b3bada | 7449 | baseaddr = objfile->text_section_offset (); |
0018ea6f DE |
7450 | |
7451 | dwarf2_find_base_address (comp_unit_die, cu); | |
7452 | ||
7453 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7454 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7455 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7456 | &best_highpc, cu, pst); | |
7457 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
7458 | { |
7459 | CORE_ADDR low | |
7460 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
7461 | - baseaddr); | |
7462 | CORE_ADDR high | |
7463 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
7464 | - baseaddr - 1); | |
7465 | /* Store the contiguous range if it is not empty; it can be | |
7466 | empty for CUs with no code. */ | |
d320c2b5 TT |
7467 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
7468 | low, high, pst); | |
79748972 | 7469 | } |
0018ea6f DE |
7470 | |
7471 | /* Check if comp unit has_children. | |
7472 | If so, read the rest of the partial symbols from this comp unit. | |
7473 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7474 | if (comp_unit_die->has_children) |
0018ea6f DE |
7475 | { |
7476 | struct partial_die_info *first_die; | |
7477 | CORE_ADDR lowpc, highpc; | |
7478 | ||
7479 | lowpc = ((CORE_ADDR) -1); | |
7480 | highpc = ((CORE_ADDR) 0); | |
7481 | ||
7482 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7483 | ||
7484 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7485 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7486 | |
7487 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7488 | complaints from `maint check'. */ | |
7489 | if (lowpc == ((CORE_ADDR) -1)) | |
7490 | lowpc = highpc; | |
7491 | ||
7492 | /* If the compilation unit didn't have an explicit address range, | |
7493 | then use the information extracted from its child dies. */ | |
e385593e | 7494 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7495 | { |
7496 | best_lowpc = lowpc; | |
7497 | best_highpc = highpc; | |
7498 | } | |
7499 | } | |
4ae976d1 | 7500 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7501 | best_lowpc + baseaddr) |
7502 | - baseaddr); | |
4ae976d1 | 7503 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
7504 | best_highpc + baseaddr) |
7505 | - baseaddr); | |
0018ea6f | 7506 | |
8763cede | 7507 | end_psymtab_common (objfile, pst); |
0018ea6f | 7508 | |
ae640021 | 7509 | if (!cu->per_cu->imported_symtabs_empty ()) |
0018ea6f DE |
7510 | { |
7511 | int i; | |
ae640021 | 7512 | int len = cu->per_cu->imported_symtabs_size (); |
0018ea6f DE |
7513 | |
7514 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7515 | post-pass. */ | |
7516 | pst->number_of_dependencies = len; | |
a9342b62 TT |
7517 | pst->dependencies |
7518 | = objfile->partial_symtabs->allocate_dependencies (len); | |
ae640021 AB |
7519 | for (i = 0; i < len; ++i) |
7520 | { | |
7521 | pst->dependencies[i] | |
7522 | = cu->per_cu->imported_symtabs->at (i)->v.psymtab; | |
7523 | } | |
0018ea6f | 7524 | |
ae640021 | 7525 | cu->per_cu->imported_symtabs_free (); |
0018ea6f DE |
7526 | } |
7527 | ||
7528 | /* Get the list of files included in the current compilation unit, | |
7529 | and build a psymtab for each of them. */ | |
7530 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7531 | ||
b4f54984 | 7532 | if (dwarf_read_debug) |
b926417a TT |
7533 | fprintf_unfiltered (gdb_stdlog, |
7534 | "Psymtab for %s unit @%s: %s - %s" | |
7535 | ", %d global, %d static syms\n", | |
7536 | per_cu->is_debug_types ? "type" : "comp", | |
7537 | sect_offset_str (per_cu->sect_off), | |
7538 | paddress (gdbarch, pst->text_low (objfile)), | |
7539 | paddress (gdbarch, pst->text_high (objfile)), | |
7540 | pst->n_global_syms, pst->n_static_syms); | |
0018ea6f DE |
7541 | } |
7542 | ||
7543 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7544 | Process compilation unit THIS_CU for a psymtab. */ | |
7545 | ||
7546 | static void | |
7547 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
135f5437 | 7548 | bool want_partial_unit, |
b93601f3 | 7549 | enum language pretend_language) |
0018ea6f DE |
7550 | { |
7551 | /* If this compilation unit was already read in, free the | |
7552 | cached copy in order to read it in again. This is | |
7553 | necessary because we skipped some symbols when we first | |
7554 | read in the compilation unit (see load_partial_dies). | |
7555 | This problem could be avoided, but the benefit is unclear. */ | |
7556 | if (this_cu->cu != NULL) | |
7557 | free_one_cached_comp_unit (this_cu); | |
7558 | ||
6751ebae | 7559 | cutu_reader reader (this_cu, NULL, 0, false); |
c0ab21c2 | 7560 | |
58990295 TV |
7561 | switch (reader.comp_unit_die->tag) |
7562 | { | |
7563 | case DW_TAG_compile_unit: | |
7564 | this_cu->unit_type = DW_UT_compile; | |
7565 | break; | |
7566 | case DW_TAG_partial_unit: | |
7567 | this_cu->unit_type = DW_UT_partial; | |
7568 | break; | |
7569 | default: | |
7570 | abort (); | |
7571 | } | |
7572 | ||
c0ab21c2 | 7573 | if (reader.dummy_p) |
f1902523 | 7574 | { |
c0ab21c2 | 7575 | /* Nothing. */ |
f1902523 | 7576 | } |
c0ab21c2 | 7577 | else if (this_cu->is_debug_types) |
3e225074 TT |
7578 | build_type_psymtabs_reader (&reader, reader.info_ptr, |
7579 | reader.comp_unit_die); | |
135f5437 TT |
7580 | else if (want_partial_unit |
7581 | || reader.comp_unit_die->tag != DW_TAG_partial_unit) | |
c0ab21c2 TT |
7582 | process_psymtab_comp_unit_reader (&reader, reader.info_ptr, |
7583 | reader.comp_unit_die, | |
c0ab21c2 | 7584 | pretend_language); |
0018ea6f | 7585 | |
58990295 TV |
7586 | this_cu->lang = this_cu->cu->language; |
7587 | ||
0018ea6f | 7588 | /* Age out any secondary CUs. */ |
ed2dc618 | 7589 | age_cached_comp_units (this_cu->dwarf2_per_objfile); |
0018ea6f | 7590 | } |
f4dc4d17 DE |
7591 | |
7592 | /* Reader function for build_type_psymtabs. */ | |
7593 | ||
7594 | static void | |
7595 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7596 | const gdb_byte *info_ptr, |
3e225074 | 7597 | struct die_info *type_unit_die) |
f4dc4d17 | 7598 | { |
5e22e966 | 7599 | struct dwarf2_per_objfile *dwarf2_per_objfile = reader->cu->per_objfile; |
f4dc4d17 DE |
7600 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7601 | struct dwarf2_cu *cu = reader->cu; | |
7602 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 7603 | struct signatured_type *sig_type; |
f4dc4d17 DE |
7604 | struct type_unit_group *tu_group; |
7605 | struct attribute *attr; | |
7606 | struct partial_die_info *first_die; | |
7607 | CORE_ADDR lowpc, highpc; | |
891813be | 7608 | dwarf2_psymtab *pst; |
f4dc4d17 | 7609 | |
0186c6a7 DE |
7610 | gdb_assert (per_cu->is_debug_types); |
7611 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 7612 | |
3e225074 | 7613 | if (! type_unit_die->has_children) |
f4dc4d17 DE |
7614 | return; |
7615 | ||
052c8bb8 | 7616 | attr = type_unit_die->attr (DW_AT_stmt_list); |
094b34ac | 7617 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 7618 | |
df07e2c7 | 7619 | if (tu_group->tus == nullptr) |
a8b3b8e9 | 7620 | tu_group->tus = new std::vector<signatured_type *>; |
df07e2c7 | 7621 | tu_group->tus->push_back (sig_type); |
f4dc4d17 DE |
7622 | |
7623 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
f4dc4d17 | 7624 | pst = create_partial_symtab (per_cu, ""); |
6d94535f | 7625 | pst->anonymous = true; |
f4dc4d17 DE |
7626 | |
7627 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7628 | ||
7629 | lowpc = (CORE_ADDR) -1; | |
7630 | highpc = (CORE_ADDR) 0; | |
7631 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
7632 | ||
8763cede | 7633 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
7634 | } |
7635 | ||
73051182 DE |
7636 | /* Struct used to sort TUs by their abbreviation table offset. */ |
7637 | ||
7638 | struct tu_abbrev_offset | |
7639 | { | |
b2bdb8cf SM |
7640 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
7641 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
7642 | {} | |
7643 | ||
7644 | signatured_type *sig_type; | |
73051182 DE |
7645 | sect_offset abbrev_offset; |
7646 | }; | |
7647 | ||
484cf504 | 7648 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 7649 | |
484cf504 TT |
7650 | static bool |
7651 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
7652 | const struct tu_abbrev_offset &b) | |
73051182 | 7653 | { |
484cf504 | 7654 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
7655 | } |
7656 | ||
7657 | /* Efficiently read all the type units. | |
7658 | This does the bulk of the work for build_type_psymtabs. | |
7659 | ||
7660 | The efficiency is because we sort TUs by the abbrev table they use and | |
7661 | only read each abbrev table once. In one program there are 200K TUs | |
7662 | sharing 8K abbrev tables. | |
7663 | ||
7664 | The main purpose of this function is to support building the | |
5989a64e | 7665 | dwarf2_per_objfile->per_bfd->type_unit_groups table. |
73051182 DE |
7666 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we |
7667 | can collapse the search space by grouping them by stmt_list. | |
7668 | The savings can be significant, in the same program from above the 200K TUs | |
7669 | share 8K stmt_list tables. | |
7670 | ||
7671 | FUNC is expected to call get_type_unit_group, which will create the | |
7672 | struct type_unit_group if necessary and add it to | |
5989a64e | 7673 | dwarf2_per_objfile->per_bfd->type_unit_groups. */ |
73051182 DE |
7674 | |
7675 | static void | |
ed2dc618 | 7676 | build_type_psymtabs_1 (struct dwarf2_per_objfile *dwarf2_per_objfile) |
73051182 | 7677 | { |
5989a64e | 7678 | struct tu_stats *tu_stats = &dwarf2_per_objfile->per_bfd->tu_stats; |
685af9cd | 7679 | abbrev_table_up abbrev_table; |
73051182 | 7680 | sect_offset abbrev_offset; |
73051182 DE |
7681 | |
7682 | /* It's up to the caller to not call us multiple times. */ | |
5989a64e | 7683 | gdb_assert (dwarf2_per_objfile->per_bfd->type_unit_groups == NULL); |
73051182 | 7684 | |
5989a64e | 7685 | if (dwarf2_per_objfile->per_bfd->all_type_units.empty ()) |
73051182 DE |
7686 | return; |
7687 | ||
7688 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
7689 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
7690 | read each abbrev table in. | |
7691 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
7692 | This is simpler and efficient enough for now. | |
7693 | ||
7694 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
7695 | symtab to use). Typically TUs with the same abbrev offset have the same | |
7696 | stmt_list value too so in practice this should work well. | |
7697 | ||
7698 | The basic algorithm here is: | |
7699 | ||
7700 | sort TUs by abbrev table | |
7701 | for each TU with same abbrev table: | |
7702 | read abbrev table if first user | |
7703 | read TU top level DIE | |
7704 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
7705 | call FUNC */ | |
7706 | ||
b4f54984 | 7707 | if (dwarf_read_debug) |
73051182 DE |
7708 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
7709 | ||
7710 | /* Sort in a separate table to maintain the order of all_type_units | |
7711 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf | 7712 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
5989a64e | 7713 | sorted_by_abbrev.reserve (dwarf2_per_objfile->per_bfd->all_type_units.size ()); |
b2bdb8cf | 7714 | |
5989a64e | 7715 | for (signatured_type *sig_type : dwarf2_per_objfile->per_bfd->all_type_units) |
b2bdb8cf SM |
7716 | sorted_by_abbrev.emplace_back |
7717 | (sig_type, read_abbrev_offset (dwarf2_per_objfile, | |
7718 | sig_type->per_cu.section, | |
7719 | sig_type->per_cu.sect_off)); | |
73051182 | 7720 | |
484cf504 TT |
7721 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
7722 | sort_tu_by_abbrev_offset); | |
73051182 | 7723 | |
9c541725 | 7724 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 7725 | |
b2bdb8cf | 7726 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 7727 | { |
73051182 DE |
7728 | /* Switch to the next abbrev table if necessary. */ |
7729 | if (abbrev_table == NULL | |
b2bdb8cf | 7730 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 7731 | { |
b2bdb8cf | 7732 | abbrev_offset = tu.abbrev_offset; |
73051182 | 7733 | abbrev_table = |
86de1d91 | 7734 | abbrev_table::read (dwarf2_per_objfile->objfile, |
5989a64e | 7735 | &dwarf2_per_objfile->per_bfd->abbrev, |
86de1d91 | 7736 | abbrev_offset); |
73051182 DE |
7737 | ++tu_stats->nr_uniq_abbrev_tables; |
7738 | } | |
7739 | ||
c0ab21c2 | 7740 | cutu_reader reader (&tu.sig_type->per_cu, abbrev_table.get (), |
6751ebae | 7741 | 0, false); |
c0ab21c2 TT |
7742 | if (!reader.dummy_p) |
7743 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7744 | reader.comp_unit_die); |
73051182 | 7745 | } |
6aa5f3a6 | 7746 | } |
73051182 | 7747 | |
6aa5f3a6 DE |
7748 | /* Print collected type unit statistics. */ |
7749 | ||
7750 | static void | |
ed2dc618 | 7751 | print_tu_stats (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 | 7752 | { |
5989a64e | 7753 | struct tu_stats *tu_stats = &dwarf2_per_objfile->per_bfd->tu_stats; |
6aa5f3a6 DE |
7754 | |
7755 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf | 7756 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
5989a64e | 7757 | dwarf2_per_objfile->per_bfd->all_type_units.size ()); |
6aa5f3a6 DE |
7758 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
7759 | tu_stats->nr_uniq_abbrev_tables); | |
7760 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
7761 | tu_stats->nr_symtabs); | |
7762 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
7763 | tu_stats->nr_symtab_sharers); | |
7764 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
7765 | tu_stats->nr_stmt_less_type_units); | |
7766 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
7767 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
7768 | } |
7769 | ||
f4dc4d17 DE |
7770 | /* Traversal function for build_type_psymtabs. */ |
7771 | ||
7772 | static int | |
7773 | build_type_psymtab_dependencies (void **slot, void *info) | |
7774 | { | |
ed2dc618 SM |
7775 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7776 | = (struct dwarf2_per_objfile *) info; | |
f4dc4d17 DE |
7777 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7778 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 7779 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
891813be | 7780 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
df07e2c7 | 7781 | int len = (tu_group->tus == nullptr) ? 0 : tu_group->tus->size (); |
f4dc4d17 DE |
7782 | int i; |
7783 | ||
7784 | gdb_assert (len > 0); | |
197400e8 | 7785 | gdb_assert (per_cu->type_unit_group_p ()); |
f4dc4d17 DE |
7786 | |
7787 | pst->number_of_dependencies = len; | |
a9342b62 | 7788 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
df07e2c7 | 7789 | for (i = 0; i < len; ++i) |
f4dc4d17 | 7790 | { |
df07e2c7 | 7791 | struct signatured_type *iter = tu_group->tus->at (i); |
0186c6a7 DE |
7792 | gdb_assert (iter->per_cu.is_debug_types); |
7793 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 7794 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
7795 | } |
7796 | ||
df07e2c7 AB |
7797 | delete tu_group->tus; |
7798 | tu_group->tus = nullptr; | |
348e048f DE |
7799 | |
7800 | return 1; | |
7801 | } | |
7802 | ||
7803 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
7804 | Build partial symbol tables for the .debug_types comp-units. */ | |
7805 | ||
7806 | static void | |
ed2dc618 | 7807 | build_type_psymtabs (struct dwarf2_per_objfile *dwarf2_per_objfile) |
348e048f | 7808 | { |
ed2dc618 | 7809 | if (! create_all_type_units (dwarf2_per_objfile)) |
348e048f DE |
7810 | return; |
7811 | ||
ed2dc618 | 7812 | build_type_psymtabs_1 (dwarf2_per_objfile); |
6aa5f3a6 | 7813 | } |
f4dc4d17 | 7814 | |
6aa5f3a6 DE |
7815 | /* Traversal function for process_skeletonless_type_unit. |
7816 | Read a TU in a DWO file and build partial symbols for it. */ | |
7817 | ||
7818 | static int | |
7819 | process_skeletonless_type_unit (void **slot, void *info) | |
7820 | { | |
7821 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
ed2dc618 SM |
7822 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7823 | = (struct dwarf2_per_objfile *) info; | |
6aa5f3a6 DE |
7824 | struct signatured_type find_entry, *entry; |
7825 | ||
7826 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
7827 | ||
5989a64e SM |
7828 | if (dwarf2_per_objfile->per_bfd->signatured_types == NULL) |
7829 | dwarf2_per_objfile->per_bfd->signatured_types = allocate_signatured_type_table (); | |
6aa5f3a6 DE |
7830 | |
7831 | find_entry.signature = dwo_unit->signature; | |
5989a64e | 7832 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->signatured_types.get (), |
b0b6a987 | 7833 | &find_entry, INSERT); |
6aa5f3a6 DE |
7834 | /* If we've already seen this type there's nothing to do. What's happening |
7835 | is we're doing our own version of comdat-folding here. */ | |
7836 | if (*slot != NULL) | |
7837 | return 1; | |
7838 | ||
7839 | /* This does the job that create_all_type_units would have done for | |
7840 | this TU. */ | |
ed2dc618 SM |
7841 | entry = add_type_unit (dwarf2_per_objfile, dwo_unit->signature, slot); |
7842 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
7843 | *slot = entry; |
7844 | ||
7845 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
6751ebae | 7846 | cutu_reader reader (&entry->per_cu, NULL, 0, false); |
c0ab21c2 TT |
7847 | if (!reader.dummy_p) |
7848 | build_type_psymtabs_reader (&reader, reader.info_ptr, | |
3e225074 | 7849 | reader.comp_unit_die); |
6aa5f3a6 DE |
7850 | |
7851 | return 1; | |
7852 | } | |
7853 | ||
7854 | /* Traversal function for process_skeletonless_type_units. */ | |
7855 | ||
7856 | static int | |
7857 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
7858 | { | |
7859 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
7860 | ||
7861 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
7862 | htab_traverse_noresize (dwo_file->tus.get (), |
7863 | process_skeletonless_type_unit, info); | |
6aa5f3a6 DE |
7864 | |
7865 | return 1; | |
7866 | } | |
7867 | ||
7868 | /* Scan all TUs of DWO files, verifying we've processed them. | |
7869 | This is needed in case a TU was emitted without its skeleton. | |
7870 | Note: This can't be done until we know what all the DWO files are. */ | |
7871 | ||
7872 | static void | |
ed2dc618 | 7873 | process_skeletonless_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
7874 | { |
7875 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
ed2dc618 | 7876 | if (get_dwp_file (dwarf2_per_objfile) == NULL |
5989a64e | 7877 | && dwarf2_per_objfile->per_bfd->dwo_files != NULL) |
6aa5f3a6 | 7878 | { |
5989a64e | 7879 | htab_traverse_noresize (dwarf2_per_objfile->per_bfd->dwo_files.get (), |
6aa5f3a6 | 7880 | process_dwo_file_for_skeletonless_type_units, |
ed2dc618 | 7881 | dwarf2_per_objfile); |
6aa5f3a6 | 7882 | } |
348e048f DE |
7883 | } |
7884 | ||
ed2dc618 | 7885 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
7886 | |
7887 | static void | |
ed2dc618 | 7888 | set_partial_user (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 7889 | { |
5989a64e | 7890 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
95554aad | 7891 | { |
891813be | 7892 | dwarf2_psymtab *pst = per_cu->v.psymtab; |
95554aad | 7893 | |
36586728 TT |
7894 | if (pst == NULL) |
7895 | continue; | |
7896 | ||
b76e467d | 7897 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
7898 | { |
7899 | /* Set the 'user' field only if it is not already set. */ | |
7900 | if (pst->dependencies[j]->user == NULL) | |
7901 | pst->dependencies[j]->user = pst; | |
7902 | } | |
7903 | } | |
7904 | } | |
7905 | ||
93311388 DE |
7906 | /* Build the partial symbol table by doing a quick pass through the |
7907 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 7908 | |
93311388 | 7909 | static void |
ed2dc618 | 7910 | dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile *dwarf2_per_objfile) |
93311388 | 7911 | { |
ed2dc618 | 7912 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
93311388 | 7913 | |
b4f54984 | 7914 | if (dwarf_read_debug) |
45cfd468 DE |
7915 | { |
7916 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 7917 | objfile_name (objfile)); |
45cfd468 DE |
7918 | } |
7919 | ||
76935768 | 7920 | scoped_restore restore_reading_psyms |
5989a64e | 7921 | = make_scoped_restore (&dwarf2_per_objfile->per_bfd->reading_partial_symbols, |
76935768 | 7922 | true); |
98bfdba5 | 7923 | |
5989a64e | 7924 | dwarf2_per_objfile->per_bfd->info.read (objfile); |
91c24f0a | 7925 | |
93311388 DE |
7926 | /* Any cached compilation units will be linked by the per-objfile |
7927 | read_in_chain. Make sure to free them when we're done. */ | |
11ed8cad | 7928 | free_cached_comp_units freer (dwarf2_per_objfile); |
72bf9492 | 7929 | |
ed2dc618 | 7930 | build_type_psymtabs (dwarf2_per_objfile); |
348e048f | 7931 | |
ed2dc618 | 7932 | create_all_comp_units (dwarf2_per_objfile); |
c906108c | 7933 | |
60606b2c TT |
7934 | /* Create a temporary address map on a temporary obstack. We later |
7935 | copy this to the final obstack. */ | |
8268c778 | 7936 | auto_obstack temp_obstack; |
791afaa2 TT |
7937 | |
7938 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 7939 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 7940 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 7941 | |
5989a64e | 7942 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->per_bfd->all_comp_units) |
3d5afab3 TV |
7943 | { |
7944 | if (per_cu->v.psymtab != NULL) | |
7945 | /* In case a forward DW_TAG_imported_unit has read the CU already. */ | |
7946 | continue; | |
7947 | process_psymtab_comp_unit (per_cu, false, language_minimal); | |
7948 | } | |
ff013f42 | 7949 | |
6aa5f3a6 | 7950 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
ed2dc618 | 7951 | process_skeletonless_type_units (dwarf2_per_objfile); |
6aa5f3a6 DE |
7952 | |
7953 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
5989a64e | 7954 | if (dwarf2_per_objfile->per_bfd->type_unit_groups != NULL) |
6aa5f3a6 | 7955 | { |
5989a64e | 7956 | htab_traverse_noresize (dwarf2_per_objfile->per_bfd->type_unit_groups.get (), |
ed2dc618 | 7957 | build_type_psymtab_dependencies, dwarf2_per_objfile); |
6aa5f3a6 DE |
7958 | } |
7959 | ||
b4f54984 | 7960 | if (dwarf_read_debug) |
ed2dc618 | 7961 | print_tu_stats (dwarf2_per_objfile); |
6aa5f3a6 | 7962 | |
ed2dc618 | 7963 | set_partial_user (dwarf2_per_objfile); |
95554aad | 7964 | |
d320c2b5 TT |
7965 | objfile->partial_symtabs->psymtabs_addrmap |
7966 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 7967 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
7968 | /* At this point we want to keep the address map. */ |
7969 | save_psymtabs_addrmap.release (); | |
ff013f42 | 7970 | |
b4f54984 | 7971 | if (dwarf_read_debug) |
45cfd468 | 7972 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 7973 | objfile_name (objfile)); |
ae038cb0 DJ |
7974 | } |
7975 | ||
dee91e82 DE |
7976 | /* Load the partial DIEs for a secondary CU into memory. |
7977 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 7978 | |
dee91e82 DE |
7979 | static void |
7980 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
7981 | { | |
6751ebae | 7982 | cutu_reader reader (this_cu, NULL, 1, false); |
c0ab21c2 TT |
7983 | |
7984 | if (!reader.dummy_p) | |
7985 | { | |
7986 | prepare_one_comp_unit (reader.cu, reader.comp_unit_die, | |
7987 | language_minimal); | |
7988 | ||
7989 | /* Check if comp unit has_children. | |
7990 | If so, read the rest of the partial symbols from this comp unit. | |
7991 | If not, there's no more debug_info for this comp unit. */ | |
3e225074 | 7992 | if (reader.comp_unit_die->has_children) |
c0ab21c2 | 7993 | load_partial_dies (&reader, reader.info_ptr, 0); |
6751ebae TT |
7994 | |
7995 | reader.keep (); | |
c0ab21c2 | 7996 | } |
ae038cb0 DJ |
7997 | } |
7998 | ||
ae038cb0 | 7999 | static void |
ed2dc618 | 8000 | read_comp_units_from_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
36586728 | 8001 | struct dwarf2_section_info *section, |
f1902523 | 8002 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8003 | unsigned int is_dwz) |
ae038cb0 | 8004 | { |
d521ce57 | 8005 | const gdb_byte *info_ptr; |
ed2dc618 | 8006 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
be391dca | 8007 | |
b4f54984 | 8008 | if (dwarf_read_debug) |
bf6af496 | 8009 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
96b79293 TT |
8010 | section->get_name (), |
8011 | section->get_file_name ()); | |
bf6af496 | 8012 | |
96b79293 | 8013 | section->read (objfile); |
ae038cb0 | 8014 | |
36586728 | 8015 | info_ptr = section->buffer; |
6e70227d | 8016 | |
36586728 | 8017 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8018 | { |
ae038cb0 | 8019 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8020 | |
9c541725 | 8021 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8022 | |
f1902523 | 8023 | comp_unit_head cu_header; |
ed2dc618 SM |
8024 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
8025 | abbrev_section, info_ptr, | |
8026 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8027 | |
8028 | /* Save the compilation unit for later lookup. */ | |
f1902523 | 8029 | if (cu_header.unit_type != DW_UT_type) |
5989a64e | 8030 | this_cu = dwarf2_per_objfile->per_bfd->allocate_per_cu (); |
f1902523 JK |
8031 | else |
8032 | { | |
5989a64e | 8033 | auto sig_type = dwarf2_per_objfile->per_bfd->allocate_signatured_type (); |
f1902523 JK |
8034 | sig_type->signature = cu_header.signature; |
8035 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8036 | this_cu = &sig_type->per_cu; | |
8037 | } | |
8038 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8039 | this_cu->sect_off = sect_off; |
f1902523 | 8040 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8041 | this_cu->is_dwz = is_dwz; |
e3b94546 | 8042 | this_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
8a0459fd | 8043 | this_cu->section = section; |
ae038cb0 | 8044 | |
5989a64e | 8045 | dwarf2_per_objfile->per_bfd->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8046 | |
8047 | info_ptr = info_ptr + this_cu->length; | |
8048 | } | |
36586728 TT |
8049 | } |
8050 | ||
8051 | /* Create a list of all compilation units in OBJFILE. | |
8052 | This is only done for -readnow and building partial symtabs. */ | |
8053 | ||
8054 | static void | |
ed2dc618 | 8055 | create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 8056 | { |
5989a64e SM |
8057 | gdb_assert (dwarf2_per_objfile->per_bfd->all_comp_units.empty ()); |
8058 | read_comp_units_from_section (dwarf2_per_objfile, &dwarf2_per_objfile->per_bfd->info, | |
8059 | &dwarf2_per_objfile->per_bfd->abbrev, 0); | |
36586728 | 8060 | |
c3699833 | 8061 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile->per_bfd); |
4db1a1dc | 8062 | if (dwz != NULL) |
ed2dc618 | 8063 | read_comp_units_from_section (dwarf2_per_objfile, &dwz->info, &dwz->abbrev, |
b76e467d | 8064 | 1); |
c906108c SS |
8065 | } |
8066 | ||
5734ee8b | 8067 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8068 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8069 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8070 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8071 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8072 | |
72bf9492 DJ |
8073 | static void |
8074 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8075 | CORE_ADDR *highpc, int set_addrmap, |
8076 | struct dwarf2_cu *cu) | |
c906108c | 8077 | { |
72bf9492 | 8078 | struct partial_die_info *pdi; |
c906108c | 8079 | |
91c24f0a DC |
8080 | /* Now, march along the PDI's, descending into ones which have |
8081 | interesting children but skipping the children of the other ones, | |
8082 | until we reach the end of the compilation unit. */ | |
c906108c | 8083 | |
72bf9492 | 8084 | pdi = first_die; |
91c24f0a | 8085 | |
72bf9492 DJ |
8086 | while (pdi != NULL) |
8087 | { | |
52356b79 | 8088 | pdi->fixup (cu); |
c906108c | 8089 | |
f55ee35c | 8090 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8091 | children, so we need to look at them. Ditto for anonymous |
8092 | enums. */ | |
933c6fe4 | 8093 | |
72bf9492 | 8094 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8095 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8096 | || pdi->tag == DW_TAG_imported_unit |
8097 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8098 | { |
72bf9492 | 8099 | switch (pdi->tag) |
c906108c SS |
8100 | { |
8101 | case DW_TAG_subprogram: | |
b1dc1806 | 8102 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8103 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 8104 | break; |
72929c62 | 8105 | case DW_TAG_constant: |
c906108c SS |
8106 | case DW_TAG_variable: |
8107 | case DW_TAG_typedef: | |
91c24f0a | 8108 | case DW_TAG_union_type: |
317d2668 TV |
8109 | if (!pdi->is_declaration |
8110 | || (pdi->tag == DW_TAG_variable && pdi->is_external)) | |
63d06c5c | 8111 | { |
72bf9492 | 8112 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8113 | } |
8114 | break; | |
c906108c | 8115 | case DW_TAG_class_type: |
680b30c7 | 8116 | case DW_TAG_interface_type: |
c906108c | 8117 | case DW_TAG_structure_type: |
72bf9492 | 8118 | if (!pdi->is_declaration) |
c906108c | 8119 | { |
72bf9492 | 8120 | add_partial_symbol (pdi, cu); |
c906108c | 8121 | } |
b7fee5a3 KS |
8122 | if ((cu->language == language_rust |
8123 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8124 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8125 | set_addrmap, cu); | |
c906108c | 8126 | break; |
91c24f0a | 8127 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8128 | if (!pdi->is_declaration) |
8129 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8130 | break; |
8131 | case DW_TAG_base_type: | |
a02abb62 | 8132 | case DW_TAG_subrange_type: |
c906108c | 8133 | /* File scope base type definitions are added to the partial |
c5aa993b | 8134 | symbol table. */ |
72bf9492 | 8135 | add_partial_symbol (pdi, cu); |
c906108c | 8136 | break; |
d9fa45fe | 8137 | case DW_TAG_namespace: |
cdc07690 | 8138 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8139 | break; |
5d7cb8df | 8140 | case DW_TAG_module: |
59c35742 AB |
8141 | if (!pdi->is_declaration) |
8142 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); | |
5d7cb8df | 8143 | break; |
95554aad TT |
8144 | case DW_TAG_imported_unit: |
8145 | { | |
8146 | struct dwarf2_per_cu_data *per_cu; | |
8147 | ||
f4dc4d17 DE |
8148 | /* For now we don't handle imported units in type units. */ |
8149 | if (cu->per_cu->is_debug_types) | |
8150 | { | |
8151 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8152 | " supported in type units [in module %s]"), | |
5e22e966 | 8153 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
8154 | } |
8155 | ||
e3b94546 | 8156 | per_cu = dwarf2_find_containing_comp_unit |
5e22e966 | 8157 | (pdi->d.sect_off, pdi->is_dwz, cu->per_objfile); |
95554aad TT |
8158 | |
8159 | /* Go read the partial unit, if needed. */ | |
8160 | if (per_cu->v.psymtab == NULL) | |
135f5437 | 8161 | process_psymtab_comp_unit (per_cu, true, cu->language); |
95554aad | 8162 | |
ae640021 | 8163 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
8164 | } |
8165 | break; | |
74921315 KS |
8166 | case DW_TAG_imported_declaration: |
8167 | add_partial_symbol (pdi, cu); | |
8168 | break; | |
c906108c SS |
8169 | default: |
8170 | break; | |
8171 | } | |
8172 | } | |
8173 | ||
72bf9492 DJ |
8174 | /* If the die has a sibling, skip to the sibling. */ |
8175 | ||
8176 | pdi = pdi->die_sibling; | |
8177 | } | |
8178 | } | |
8179 | ||
8180 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8181 | |
72bf9492 | 8182 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8183 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8184 | Enumerators are an exception; they use the scope of their parent |
8185 | enumeration type, i.e. the name of the enumeration type is not | |
8186 | prepended to the enumerator. | |
91c24f0a | 8187 | |
72bf9492 DJ |
8188 | There are two complexities. One is DW_AT_specification; in this |
8189 | case "parent" means the parent of the target of the specification, | |
8190 | instead of the direct parent of the DIE. The other is compilers | |
8191 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8192 | the fully qualified name of structure types from their members' | |
8193 | linkage names. This must be done using the DIE's children rather | |
8194 | than the children of any DW_AT_specification target. We only need | |
8195 | to do this for structures at the top level, i.e. if the target of | |
8196 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8197 | have a parent. */ | |
8198 | ||
8199 | /* Compute the scope prefix associated with PDI's parent, in | |
8200 | compilation unit CU. The result will be allocated on CU's | |
8201 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8202 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8203 | static const char * |
72bf9492 DJ |
8204 | partial_die_parent_scope (struct partial_die_info *pdi, |
8205 | struct dwarf2_cu *cu) | |
8206 | { | |
15d034d0 | 8207 | const char *grandparent_scope; |
72bf9492 | 8208 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8209 | |
72bf9492 DJ |
8210 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8211 | then this means the parent of the specification DIE. */ | |
8212 | ||
8213 | real_pdi = pdi; | |
72bf9492 | 8214 | while (real_pdi->has_specification) |
fb816e8b | 8215 | { |
122cf0f2 AB |
8216 | auto res = find_partial_die (real_pdi->spec_offset, |
8217 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8218 | real_pdi = res.pdi; |
8219 | cu = res.cu; | |
8220 | } | |
72bf9492 DJ |
8221 | |
8222 | parent = real_pdi->die_parent; | |
8223 | if (parent == NULL) | |
8224 | return NULL; | |
8225 | ||
8226 | if (parent->scope_set) | |
8227 | return parent->scope; | |
8228 | ||
52356b79 | 8229 | parent->fixup (cu); |
72bf9492 | 8230 | |
10b3939b | 8231 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8232 | |
acebe513 UW |
8233 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8234 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8235 | Work around this problem here. */ | |
8236 | if (cu->language == language_cplus | |
6e70227d | 8237 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
8238 | && strcmp (parent->name, "::") == 0 |
8239 | && grandparent_scope == NULL) | |
8240 | { | |
8241 | parent->scope = NULL; | |
8242 | parent->scope_set = 1; | |
8243 | return NULL; | |
8244 | } | |
8245 | ||
0a4b0913 | 8246 | /* Nested subroutines in Fortran get a prefix. */ |
9c6c53f7 SA |
8247 | if (pdi->tag == DW_TAG_enumerator) |
8248 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8249 | parent->scope = grandparent_scope; | |
8250 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8251 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8252 | || parent->tag == DW_TAG_structure_type |
8253 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8254 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a | 8255 | || parent->tag == DW_TAG_union_type |
0a4b0913 AB |
8256 | || parent->tag == DW_TAG_enumeration_type |
8257 | || (cu->language == language_fortran | |
8258 | && parent->tag == DW_TAG_subprogram | |
8259 | && pdi->tag == DW_TAG_subprogram)) | |
72bf9492 DJ |
8260 | { |
8261 | if (grandparent_scope == NULL) | |
8262 | parent->scope = parent->name; | |
8263 | else | |
3e43a32a MS |
8264 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8265 | grandparent_scope, | |
f55ee35c | 8266 | parent->name, 0, cu); |
72bf9492 | 8267 | } |
72bf9492 DJ |
8268 | else |
8269 | { | |
8270 | /* FIXME drow/2004-04-01: What should we be doing with | |
8271 | function-local names? For partial symbols, we should probably be | |
8272 | ignoring them. */ | |
fa9c3fa0 TT |
8273 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8274 | dwarf_tag_name (parent->tag), | |
8275 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8276 | parent->scope = grandparent_scope; |
c906108c SS |
8277 | } |
8278 | ||
72bf9492 DJ |
8279 | parent->scope_set = 1; |
8280 | return parent->scope; | |
8281 | } | |
8282 | ||
8283 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8284 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8285 | |
43816ebc | 8286 | static gdb::unique_xmalloc_ptr<char> |
72bf9492 DJ |
8287 | partial_die_full_name (struct partial_die_info *pdi, |
8288 | struct dwarf2_cu *cu) | |
8289 | { | |
15d034d0 | 8290 | const char *parent_scope; |
72bf9492 | 8291 | |
98bfdba5 PA |
8292 | /* If this is a template instantiation, we can not work out the |
8293 | template arguments from partial DIEs. So, unfortunately, we have | |
8294 | to go through the full DIEs. At least any work we do building | |
8295 | types here will be reused if full symbols are loaded later. */ | |
8296 | if (pdi->has_template_arguments) | |
8297 | { | |
52356b79 | 8298 | pdi->fixup (cu); |
98bfdba5 PA |
8299 | |
8300 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
8301 | { | |
8302 | struct die_info *die; | |
8303 | struct attribute attr; | |
8304 | struct dwarf2_cu *ref_cu = cu; | |
8305 | ||
b64f50a1 | 8306 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8307 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8308 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8309 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8310 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8311 | ||
43816ebc | 8312 | return make_unique_xstrdup (dwarf2_full_name (NULL, die, ref_cu)); |
98bfdba5 PA |
8313 | } |
8314 | } | |
8315 | ||
72bf9492 DJ |
8316 | parent_scope = partial_die_parent_scope (pdi, cu); |
8317 | if (parent_scope == NULL) | |
8318 | return NULL; | |
8319 | else | |
43816ebc TT |
8320 | return gdb::unique_xmalloc_ptr<char> (typename_concat (NULL, parent_scope, |
8321 | pdi->name, 0, cu)); | |
c906108c SS |
8322 | } |
8323 | ||
8324 | static void | |
72bf9492 | 8325 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8326 | { |
5e22e966 | 8327 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 8328 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 8329 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 8330 | CORE_ADDR addr = 0; |
15d034d0 | 8331 | const char *actual_name = NULL; |
e142c38c DJ |
8332 | CORE_ADDR baseaddr; |
8333 | ||
b3b3bada | 8334 | baseaddr = objfile->text_section_offset (); |
c906108c | 8335 | |
43816ebc TT |
8336 | gdb::unique_xmalloc_ptr<char> built_actual_name |
8337 | = partial_die_full_name (pdi, cu); | |
15d034d0 | 8338 | if (built_actual_name != NULL) |
43816ebc | 8339 | actual_name = built_actual_name.get (); |
63d06c5c | 8340 | |
72bf9492 DJ |
8341 | if (actual_name == NULL) |
8342 | actual_name = pdi->name; | |
8343 | ||
76e288d1 TT |
8344 | partial_symbol psymbol; |
8345 | memset (&psymbol, 0, sizeof (psymbol)); | |
8346 | psymbol.ginfo.set_language (cu->language, &objfile->objfile_obstack); | |
8347 | psymbol.ginfo.section = -1; | |
8348 | ||
8349 | /* The code below indicates that the psymbol should be installed by | |
8350 | setting this. */ | |
8351 | gdb::optional<psymbol_placement> where; | |
8352 | ||
c906108c SS |
8353 | switch (pdi->tag) |
8354 | { | |
b1dc1806 | 8355 | case DW_TAG_inlined_subroutine: |
c906108c | 8356 | case DW_TAG_subprogram: |
79748972 TT |
8357 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8358 | - baseaddr); | |
0a4b0913 AB |
8359 | if (pdi->is_external |
8360 | || cu->language == language_ada | |
8361 | || (cu->language == language_fortran | |
8362 | && pdi->die_parent != NULL | |
8363 | && pdi->die_parent->tag == DW_TAG_subprogram)) | |
8364 | { | |
8365 | /* Normally, only "external" DIEs are part of the global scope. | |
8366 | But in Ada and Fortran, we want to be able to access nested | |
8367 | procedures globally. So all Ada and Fortran subprograms are | |
8368 | stored in the global scope. */ | |
76e288d1 | 8369 | where = psymbol_placement::GLOBAL; |
c906108c SS |
8370 | } |
8371 | else | |
76e288d1 TT |
8372 | where = psymbol_placement::STATIC; |
8373 | ||
8374 | psymbol.domain = VAR_DOMAIN; | |
8375 | psymbol.aclass = LOC_BLOCK; | |
8376 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8377 | psymbol.ginfo.value.address = addr; | |
0c1b455e TT |
8378 | |
8379 | if (pdi->main_subprogram && actual_name != NULL) | |
8380 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8381 | break; |
72929c62 | 8382 | case DW_TAG_constant: |
76e288d1 TT |
8383 | psymbol.domain = VAR_DOMAIN; |
8384 | psymbol.aclass = LOC_STATIC; | |
8385 | where = (pdi->is_external | |
8386 | ? psymbol_placement::GLOBAL | |
8387 | : psymbol_placement::STATIC); | |
72929c62 | 8388 | break; |
c906108c | 8389 | case DW_TAG_variable: |
95554aad TT |
8390 | if (pdi->d.locdesc) |
8391 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8392 | |
95554aad | 8393 | if (pdi->d.locdesc |
caac4577 | 8394 | && addr == 0 |
5989a64e | 8395 | && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
8396 | { |
8397 | /* A global or static variable may also have been stripped | |
8398 | out by the linker if unused, in which case its address | |
8399 | will be nullified; do not add such variables into partial | |
8400 | symbol table then. */ | |
8401 | } | |
8402 | else if (pdi->is_external) | |
c906108c SS |
8403 | { |
8404 | /* Global Variable. | |
8405 | Don't enter into the minimal symbol tables as there is | |
8406 | a minimal symbol table entry from the ELF symbols already. | |
8407 | Enter into partial symbol table if it has a location | |
8408 | descriptor or a type. | |
8409 | If the location descriptor is missing, new_symbol will create | |
8410 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8411 | be determined from the minimal symbol table whenever the variable | |
8412 | is referenced. | |
8413 | The address for the partial symbol table entry is not | |
8414 | used by GDB, but it comes in handy for debugging partial symbol | |
8415 | table building. */ | |
8416 | ||
95554aad | 8417 | if (pdi->d.locdesc || pdi->has_type) |
76e288d1 TT |
8418 | { |
8419 | psymbol.domain = VAR_DOMAIN; | |
8420 | psymbol.aclass = LOC_STATIC; | |
8421 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8422 | psymbol.ginfo.value.address = addr; | |
8423 | where = psymbol_placement::GLOBAL; | |
8424 | } | |
c906108c SS |
8425 | } |
8426 | else | |
8427 | { | |
ff908ebf AW |
8428 | int has_loc = pdi->d.locdesc != NULL; |
8429 | ||
8430 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8431 | without location descriptors or constant values). */ | |
8432 | if (!has_loc && !pdi->has_const_value) | |
43816ebc | 8433 | return; |
ff908ebf | 8434 | |
76e288d1 TT |
8435 | psymbol.domain = VAR_DOMAIN; |
8436 | psymbol.aclass = LOC_STATIC; | |
8437 | psymbol.ginfo.section = SECT_OFF_TEXT (objfile); | |
8438 | if (has_loc) | |
8439 | psymbol.ginfo.value.address = addr; | |
8440 | where = psymbol_placement::STATIC; | |
c906108c SS |
8441 | } |
8442 | break; | |
8443 | case DW_TAG_typedef: | |
8444 | case DW_TAG_base_type: | |
a02abb62 | 8445 | case DW_TAG_subrange_type: |
76e288d1 TT |
8446 | psymbol.domain = VAR_DOMAIN; |
8447 | psymbol.aclass = LOC_TYPEDEF; | |
8448 | where = psymbol_placement::STATIC; | |
c906108c | 8449 | break; |
74921315 | 8450 | case DW_TAG_imported_declaration: |
72bf9492 | 8451 | case DW_TAG_namespace: |
76e288d1 TT |
8452 | psymbol.domain = VAR_DOMAIN; |
8453 | psymbol.aclass = LOC_TYPEDEF; | |
8454 | where = psymbol_placement::GLOBAL; | |
72bf9492 | 8455 | break; |
530e8392 | 8456 | case DW_TAG_module: |
a5fd13a9 BH |
8457 | /* With Fortran 77 there might be a "BLOCK DATA" module |
8458 | available without any name. If so, we skip the module as it | |
8459 | doesn't bring any value. */ | |
8460 | if (actual_name != nullptr) | |
76e288d1 TT |
8461 | { |
8462 | psymbol.domain = MODULE_DOMAIN; | |
8463 | psymbol.aclass = LOC_TYPEDEF; | |
8464 | where = psymbol_placement::GLOBAL; | |
8465 | } | |
530e8392 | 8466 | break; |
c906108c | 8467 | case DW_TAG_class_type: |
680b30c7 | 8468 | case DW_TAG_interface_type: |
c906108c SS |
8469 | case DW_TAG_structure_type: |
8470 | case DW_TAG_union_type: | |
8471 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
8472 | /* Skip external references. The DWARF standard says in the section |
8473 | about "Structure, Union, and Class Type Entries": "An incomplete | |
8474 | structure, union or class type is represented by a structure, | |
8475 | union or class entry that does not have a byte size attribute | |
8476 | and that has a DW_AT_declaration attribute." */ | |
8477 | if (!pdi->has_byte_size && pdi->is_declaration) | |
43816ebc | 8478 | return; |
fa4028e9 | 8479 | |
63d06c5c DC |
8480 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8481 | static vs. global. */ | |
76e288d1 TT |
8482 | psymbol.domain = STRUCT_DOMAIN; |
8483 | psymbol.aclass = LOC_TYPEDEF; | |
8484 | where = (cu->language == language_cplus | |
8485 | ? psymbol_placement::GLOBAL | |
8486 | : psymbol_placement::STATIC); | |
c906108c SS |
8487 | break; |
8488 | case DW_TAG_enumerator: | |
76e288d1 TT |
8489 | psymbol.domain = VAR_DOMAIN; |
8490 | psymbol.aclass = LOC_CONST; | |
8491 | where = (cu->language == language_cplus | |
8492 | ? psymbol_placement::GLOBAL | |
8493 | : psymbol_placement::STATIC); | |
c906108c SS |
8494 | break; |
8495 | default: | |
8496 | break; | |
8497 | } | |
76e288d1 TT |
8498 | |
8499 | if (where.has_value ()) | |
8500 | { | |
f049a313 TT |
8501 | if (built_actual_name != nullptr) |
8502 | actual_name = objfile->intern (actual_name); | |
bcfe6157 TT |
8503 | if (pdi->linkage_name == nullptr || cu->language == language_ada) |
8504 | psymbol.ginfo.set_linkage_name (actual_name); | |
8505 | else | |
8506 | { | |
8507 | psymbol.ginfo.set_demangled_name (actual_name, | |
8508 | &objfile->objfile_obstack); | |
8509 | psymbol.ginfo.set_linkage_name (pdi->linkage_name); | |
8510 | } | |
76e288d1 TT |
8511 | add_psymbol_to_list (psymbol, *where, objfile); |
8512 | } | |
c906108c SS |
8513 | } |
8514 | ||
5c4e30ca DC |
8515 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8516 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8517 | the name of the enclosing namespace. */ | |
91c24f0a | 8518 | |
72bf9492 DJ |
8519 | static void |
8520 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8521 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8522 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8523 | { |
72bf9492 | 8524 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8525 | |
72bf9492 | 8526 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8527 | |
8528 | /* Now scan partial symbols in that namespace. */ | |
8529 | ||
91c24f0a | 8530 | if (pdi->has_children) |
cdc07690 | 8531 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8532 | } |
8533 | ||
5d7cb8df JK |
8534 | /* Read a partial die corresponding to a Fortran module. */ |
8535 | ||
8536 | static void | |
8537 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8538 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8539 | { |
530e8392 KB |
8540 | /* Add a symbol for the namespace. */ |
8541 | ||
8542 | add_partial_symbol (pdi, cu); | |
8543 | ||
f55ee35c | 8544 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8545 | |
8546 | if (pdi->has_children) | |
cdc07690 | 8547 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8548 | } |
8549 | ||
b1dc1806 XR |
8550 | /* Read a partial die corresponding to a subprogram or an inlined |
8551 | subprogram and create a partial symbol for that subprogram. | |
8552 | When the CU language allows it, this routine also defines a partial | |
8553 | symbol for each nested subprogram that this subprogram contains. | |
8554 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
8555 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 8556 | |
cdc07690 YQ |
8557 | PDI may also be a lexical block, in which case we simply search |
8558 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
8559 | Again, this is only performed when the CU language allows this |
8560 | type of definitions. */ | |
8561 | ||
8562 | static void | |
8563 | add_partial_subprogram (struct partial_die_info *pdi, | |
8564 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 8565 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 8566 | { |
b1dc1806 | 8567 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
8568 | { |
8569 | if (pdi->has_pc_info) | |
8570 | { | |
8571 | if (pdi->lowpc < *lowpc) | |
8572 | *lowpc = pdi->lowpc; | |
8573 | if (pdi->highpc > *highpc) | |
8574 | *highpc = pdi->highpc; | |
cdc07690 | 8575 | if (set_addrmap) |
5734ee8b | 8576 | { |
5e22e966 | 8577 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 8578 | struct gdbarch *gdbarch = objfile->arch (); |
3e29f34a | 8579 | CORE_ADDR baseaddr; |
b926417a TT |
8580 | CORE_ADDR this_highpc; |
8581 | CORE_ADDR this_lowpc; | |
5734ee8b | 8582 | |
b3b3bada | 8583 | baseaddr = objfile->text_section_offset (); |
b926417a TT |
8584 | this_lowpc |
8585 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8586 | pdi->lowpc + baseaddr) | |
8587 | - baseaddr); | |
8588 | this_highpc | |
8589 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
8590 | pdi->highpc + baseaddr) | |
8591 | - baseaddr); | |
d320c2b5 | 8592 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 8593 | this_lowpc, this_highpc - 1, |
9291a0cd | 8594 | cu->per_cu->v.psymtab); |
5734ee8b | 8595 | } |
481860b3 GB |
8596 | } |
8597 | ||
8598 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
8599 | { | |
bc30ff58 | 8600 | if (!pdi->is_declaration) |
e8d05480 JB |
8601 | /* Ignore subprogram DIEs that do not have a name, they are |
8602 | illegal. Do not emit a complaint at this point, we will | |
8603 | do so when we convert this psymtab into a symtab. */ | |
8604 | if (pdi->name) | |
8605 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
8606 | } |
8607 | } | |
6e70227d | 8608 | |
bc30ff58 JB |
8609 | if (! pdi->has_children) |
8610 | return; | |
8611 | ||
0a4b0913 | 8612 | if (cu->language == language_ada || cu->language == language_fortran) |
bc30ff58 JB |
8613 | { |
8614 | pdi = pdi->die_child; | |
8615 | while (pdi != NULL) | |
8616 | { | |
52356b79 | 8617 | pdi->fixup (cu); |
bc30ff58 | 8618 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 8619 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 8620 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 8621 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
8622 | pdi = pdi->die_sibling; |
8623 | } | |
8624 | } | |
8625 | } | |
8626 | ||
91c24f0a DC |
8627 | /* Read a partial die corresponding to an enumeration type. */ |
8628 | ||
72bf9492 DJ |
8629 | static void |
8630 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
8631 | struct dwarf2_cu *cu) | |
91c24f0a | 8632 | { |
72bf9492 | 8633 | struct partial_die_info *pdi; |
91c24f0a DC |
8634 | |
8635 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
8636 | add_partial_symbol (enum_pdi, cu); |
8637 | ||
8638 | pdi = enum_pdi->die_child; | |
8639 | while (pdi) | |
91c24f0a | 8640 | { |
72bf9492 | 8641 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
b98664d3 | 8642 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 8643 | else |
72bf9492 DJ |
8644 | add_partial_symbol (pdi, cu); |
8645 | pdi = pdi->die_sibling; | |
91c24f0a | 8646 | } |
91c24f0a DC |
8647 | } |
8648 | ||
6caca83c CC |
8649 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
8650 | ||
8651 | static unsigned int | |
d521ce57 | 8652 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
8653 | { |
8654 | unsigned int bytes_read; | |
8655 | ||
8656 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8657 | } | |
8658 | ||
685af9cd TT |
8659 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
8660 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
8661 | ||
4bb7a0a7 DJ |
8662 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
8663 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
8664 | the initial number. */ | |
8665 | ||
8666 | static struct abbrev_info * | |
685af9cd TT |
8667 | peek_die_abbrev (const die_reader_specs &reader, |
8668 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 8669 | { |
685af9cd | 8670 | dwarf2_cu *cu = reader.cu; |
5e22e966 | 8671 | bfd *abfd = cu->per_objfile->objfile->obfd; |
685af9cd TT |
8672 | unsigned int abbrev_number |
8673 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
8674 | |
8675 | if (abbrev_number == 0) | |
8676 | return NULL; | |
8677 | ||
685af9cd | 8678 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
8679 | if (!abbrev) |
8680 | { | |
422b9917 | 8681 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 8682 | " at offset %s [in module %s]"), |
422b9917 | 8683 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 8684 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
8685 | } |
8686 | ||
8687 | return abbrev; | |
8688 | } | |
8689 | ||
93311388 DE |
8690 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8691 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
8692 | DIE. Any children of the skipped DIEs will also be skipped. */ |
8693 | ||
d521ce57 TT |
8694 | static const gdb_byte * |
8695 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 8696 | { |
4bb7a0a7 DJ |
8697 | while (1) |
8698 | { | |
685af9cd TT |
8699 | unsigned int bytes_read; |
8700 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
8701 | ||
4bb7a0a7 DJ |
8702 | if (abbrev == NULL) |
8703 | return info_ptr + bytes_read; | |
8704 | else | |
dee91e82 | 8705 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
8706 | } |
8707 | } | |
8708 | ||
93311388 DE |
8709 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
8710 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
8711 | abbrev corresponding to that skipped uleb128 should be passed in |
8712 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
8713 | children. */ | |
8714 | ||
d521ce57 TT |
8715 | static const gdb_byte * |
8716 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 8717 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
8718 | { |
8719 | unsigned int bytes_read; | |
8720 | struct attribute attr; | |
dee91e82 DE |
8721 | bfd *abfd = reader->abfd; |
8722 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 8723 | const gdb_byte *buffer = reader->buffer; |
f664829e | 8724 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
8725 | unsigned int form, i; |
8726 | ||
8727 | for (i = 0; i < abbrev->num_attrs; i++) | |
8728 | { | |
8729 | /* The only abbrev we care about is DW_AT_sibling. */ | |
8730 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
8731 | { | |
18a8505e AT |
8732 | bool ignored; |
8733 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr, | |
8734 | &ignored); | |
4bb7a0a7 | 8735 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 8736 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 8737 | else |
b9502d3f | 8738 | { |
0826b30a | 8739 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 8740 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
8741 | |
8742 | if (sibling_ptr < info_ptr) | |
b98664d3 | 8743 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 8744 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 8745 | reader->die_section->overflow_complaint (); |
b9502d3f WN |
8746 | else |
8747 | return sibling_ptr; | |
8748 | } | |
4bb7a0a7 DJ |
8749 | } |
8750 | ||
8751 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
8752 | form = abbrev->attrs[i].form; | |
8753 | skip_attribute: | |
8754 | switch (form) | |
8755 | { | |
4bb7a0a7 | 8756 | case DW_FORM_ref_addr: |
ae411497 TT |
8757 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
8758 | and later it is offset sized. */ | |
8759 | if (cu->header.version == 2) | |
8760 | info_ptr += cu->header.addr_size; | |
8761 | else | |
8762 | info_ptr += cu->header.offset_size; | |
8763 | break; | |
36586728 TT |
8764 | case DW_FORM_GNU_ref_alt: |
8765 | info_ptr += cu->header.offset_size; | |
8766 | break; | |
ae411497 | 8767 | case DW_FORM_addr: |
4bb7a0a7 DJ |
8768 | info_ptr += cu->header.addr_size; |
8769 | break; | |
8770 | case DW_FORM_data1: | |
8771 | case DW_FORM_ref1: | |
8772 | case DW_FORM_flag: | |
8fe0f950 | 8773 | case DW_FORM_strx1: |
4bb7a0a7 DJ |
8774 | info_ptr += 1; |
8775 | break; | |
2dc7f7b3 | 8776 | case DW_FORM_flag_present: |
43988095 | 8777 | case DW_FORM_implicit_const: |
2dc7f7b3 | 8778 | break; |
4bb7a0a7 DJ |
8779 | case DW_FORM_data2: |
8780 | case DW_FORM_ref2: | |
8fe0f950 | 8781 | case DW_FORM_strx2: |
4bb7a0a7 DJ |
8782 | info_ptr += 2; |
8783 | break; | |
8fe0f950 AT |
8784 | case DW_FORM_strx3: |
8785 | info_ptr += 3; | |
8786 | break; | |
4bb7a0a7 DJ |
8787 | case DW_FORM_data4: |
8788 | case DW_FORM_ref4: | |
8fe0f950 | 8789 | case DW_FORM_strx4: |
4bb7a0a7 DJ |
8790 | info_ptr += 4; |
8791 | break; | |
8792 | case DW_FORM_data8: | |
8793 | case DW_FORM_ref8: | |
55f1336d | 8794 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
8795 | info_ptr += 8; |
8796 | break; | |
0224619f JK |
8797 | case DW_FORM_data16: |
8798 | info_ptr += 16; | |
8799 | break; | |
4bb7a0a7 | 8800 | case DW_FORM_string: |
9b1c24c8 | 8801 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
8802 | info_ptr += bytes_read; |
8803 | break; | |
2dc7f7b3 | 8804 | case DW_FORM_sec_offset: |
4bb7a0a7 | 8805 | case DW_FORM_strp: |
36586728 | 8806 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
8807 | info_ptr += cu->header.offset_size; |
8808 | break; | |
2dc7f7b3 | 8809 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
8810 | case DW_FORM_block: |
8811 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8812 | info_ptr += bytes_read; | |
8813 | break; | |
8814 | case DW_FORM_block1: | |
8815 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
8816 | break; | |
8817 | case DW_FORM_block2: | |
8818 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
8819 | break; | |
8820 | case DW_FORM_block4: | |
8821 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
8822 | break; | |
336d760d | 8823 | case DW_FORM_addrx: |
cf532bd1 | 8824 | case DW_FORM_strx: |
4bb7a0a7 DJ |
8825 | case DW_FORM_sdata: |
8826 | case DW_FORM_udata: | |
8827 | case DW_FORM_ref_udata: | |
3019eac3 DE |
8828 | case DW_FORM_GNU_addr_index: |
8829 | case DW_FORM_GNU_str_index: | |
18a8505e | 8830 | case DW_FORM_rnglistx: |
41144253 | 8831 | case DW_FORM_loclistx: |
d521ce57 | 8832 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
8833 | break; |
8834 | case DW_FORM_indirect: | |
8835 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8836 | info_ptr += bytes_read; | |
8837 | /* We need to continue parsing from here, so just go back to | |
8838 | the top. */ | |
8839 | goto skip_attribute; | |
8840 | ||
8841 | default: | |
3e43a32a MS |
8842 | error (_("Dwarf Error: Cannot handle %s " |
8843 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
8844 | dwarf_form_name (form), |
8845 | bfd_get_filename (abfd)); | |
8846 | } | |
8847 | } | |
8848 | ||
8849 | if (abbrev->has_children) | |
dee91e82 | 8850 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
8851 | else |
8852 | return info_ptr; | |
8853 | } | |
8854 | ||
93311388 | 8855 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 8856 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 8857 | |
d521ce57 | 8858 | static const gdb_byte * |
dee91e82 DE |
8859 | locate_pdi_sibling (const struct die_reader_specs *reader, |
8860 | struct partial_die_info *orig_pdi, | |
d521ce57 | 8861 | const gdb_byte *info_ptr) |
91c24f0a DC |
8862 | { |
8863 | /* Do we know the sibling already? */ | |
72bf9492 | 8864 | |
91c24f0a DC |
8865 | if (orig_pdi->sibling) |
8866 | return orig_pdi->sibling; | |
8867 | ||
8868 | /* Are there any children to deal with? */ | |
8869 | ||
8870 | if (!orig_pdi->has_children) | |
8871 | return info_ptr; | |
8872 | ||
4bb7a0a7 | 8873 | /* Skip the children the long way. */ |
91c24f0a | 8874 | |
dee91e82 | 8875 | return skip_children (reader, info_ptr); |
91c24f0a DC |
8876 | } |
8877 | ||
257e7a09 | 8878 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 8879 | not NULL. */ |
c906108c | 8880 | |
891813be TT |
8881 | void |
8882 | dwarf2_psymtab::read_symtab (struct objfile *objfile) | |
c906108c | 8883 | { |
ed2dc618 SM |
8884 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8885 | = get_dwarf2_per_objfile (objfile); | |
8886 | ||
af758d11 SM |
8887 | gdb_assert (!dwarf2_per_objfile->symtab_set_p (per_cu_data)); |
8888 | ||
077cbab2 TT |
8889 | /* If this psymtab is constructed from a debug-only objfile, the |
8890 | has_section_at_zero flag will not necessarily be correct. We | |
8891 | can get the correct value for this flag by looking at the data | |
8892 | associated with the (presumably stripped) associated objfile. */ | |
8893 | if (objfile->separate_debug_objfile_backlink) | |
c906108c | 8894 | { |
077cbab2 TT |
8895 | struct dwarf2_per_objfile *dpo_backlink |
8896 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); | |
c906108c | 8897 | |
5989a64e SM |
8898 | dwarf2_per_objfile->per_bfd->has_section_at_zero |
8899 | = dpo_backlink->per_bfd->has_section_at_zero; | |
077cbab2 | 8900 | } |
98bfdba5 | 8901 | |
8566b89b | 8902 | expand_psymtab (objfile); |
95554aad | 8903 | |
ed2dc618 | 8904 | process_cu_includes (dwarf2_per_objfile); |
c906108c | 8905 | } |
9cdd5dbd DE |
8906 | \f |
8907 | /* Reading in full CUs. */ | |
c906108c | 8908 | |
10b3939b DJ |
8909 | /* Add PER_CU to the queue. */ |
8910 | ||
8911 | static void | |
95554aad TT |
8912 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
8913 | enum language pretend_language) | |
10b3939b | 8914 | { |
10b3939b | 8915 | per_cu->queued = 1; |
1859c670 | 8916 | per_cu->per_bfd->queue.emplace (per_cu, pretend_language); |
10b3939b DJ |
8917 | } |
8918 | ||
89e63ee4 DE |
8919 | /* If PER_CU is not yet queued, add it to the queue. |
8920 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
8921 | dependency. | |
0907af0c | 8922 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
8923 | meaning either PER_CU is already queued or it is already loaded. |
8924 | ||
8925 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
8926 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
8927 | |
8928 | static int | |
89e63ee4 | 8929 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
8930 | struct dwarf2_per_cu_data *per_cu, |
8931 | enum language pretend_language) | |
8932 | { | |
8933 | /* We may arrive here during partial symbol reading, if we need full | |
8934 | DIEs to process an unusual case (e.g. template arguments). Do | |
8935 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
1859c670 | 8936 | if (per_cu->per_bfd->reading_partial_symbols) |
0907af0c DE |
8937 | { |
8938 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
8939 | return 1; | |
8940 | return 0; | |
8941 | } | |
8942 | ||
8943 | /* Mark the dependence relation so that we don't flush PER_CU | |
8944 | too early. */ | |
89e63ee4 DE |
8945 | if (dependent_cu != NULL) |
8946 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
8947 | |
8948 | /* If it's already on the queue, we have nothing to do. */ | |
8949 | if (per_cu->queued) | |
8950 | return 0; | |
8951 | ||
8952 | /* If the compilation unit is already loaded, just mark it as | |
8953 | used. */ | |
8954 | if (per_cu->cu != NULL) | |
8955 | { | |
8956 | per_cu->cu->last_used = 0; | |
8957 | return 0; | |
8958 | } | |
8959 | ||
8960 | /* Add it to the queue. */ | |
8961 | queue_comp_unit (per_cu, pretend_language); | |
8962 | ||
8963 | return 1; | |
8964 | } | |
8965 | ||
10b3939b DJ |
8966 | /* Process the queue. */ |
8967 | ||
8968 | static void | |
ed2dc618 | 8969 | process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile) |
10b3939b | 8970 | { |
b4f54984 | 8971 | if (dwarf_read_debug) |
45cfd468 DE |
8972 | { |
8973 | fprintf_unfiltered (gdb_stdlog, | |
8974 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 8975 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
8976 | } |
8977 | ||
03dd20cc DJ |
8978 | /* The queue starts out with one item, but following a DIE reference |
8979 | may load a new CU, adding it to the end of the queue. */ | |
5989a64e | 8980 | while (!dwarf2_per_objfile->per_bfd->queue.empty ()) |
10b3939b | 8981 | { |
5989a64e | 8982 | dwarf2_queue_item &item = dwarf2_per_objfile->per_bfd->queue.front (); |
39856def | 8983 | |
af758d11 | 8984 | if (!dwarf2_per_objfile->symtab_set_p (item.per_cu) |
cc12ce38 | 8985 | /* Skip dummy CUs. */ |
39856def | 8986 | && item.per_cu->cu != NULL) |
f4dc4d17 | 8987 | { |
39856def | 8988 | struct dwarf2_per_cu_data *per_cu = item.per_cu; |
73be47f5 | 8989 | unsigned int debug_print_threshold; |
247f5c4f | 8990 | char buf[100]; |
f4dc4d17 | 8991 | |
247f5c4f | 8992 | if (per_cu->is_debug_types) |
f4dc4d17 | 8993 | { |
247f5c4f DE |
8994 | struct signatured_type *sig_type = |
8995 | (struct signatured_type *) per_cu; | |
8996 | ||
9d8780f0 | 8997 | sprintf (buf, "TU %s at offset %s", |
73be47f5 | 8998 | hex_string (sig_type->signature), |
9d8780f0 | 8999 | sect_offset_str (per_cu->sect_off)); |
73be47f5 DE |
9000 | /* There can be 100s of TUs. |
9001 | Only print them in verbose mode. */ | |
9002 | debug_print_threshold = 2; | |
f4dc4d17 | 9003 | } |
247f5c4f | 9004 | else |
73be47f5 | 9005 | { |
9d8780f0 SM |
9006 | sprintf (buf, "CU at offset %s", |
9007 | sect_offset_str (per_cu->sect_off)); | |
73be47f5 DE |
9008 | debug_print_threshold = 1; |
9009 | } | |
247f5c4f | 9010 | |
b4f54984 | 9011 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9012 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
9013 | |
9014 | if (per_cu->is_debug_types) | |
39856def | 9015 | process_full_type_unit (per_cu, item.pretend_language); |
f4dc4d17 | 9016 | else |
39856def | 9017 | process_full_comp_unit (per_cu, item.pretend_language); |
f4dc4d17 | 9018 | |
b4f54984 | 9019 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9020 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 9021 | } |
10b3939b | 9022 | |
39856def | 9023 | item.per_cu->queued = 0; |
5989a64e | 9024 | dwarf2_per_objfile->per_bfd->queue.pop (); |
10b3939b DJ |
9025 | } |
9026 | ||
b4f54984 | 9027 | if (dwarf_read_debug) |
45cfd468 DE |
9028 | { |
9029 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 9030 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 9031 | } |
10b3939b DJ |
9032 | } |
9033 | ||
10b3939b DJ |
9034 | /* Read in full symbols for PST, and anything it depends on. */ |
9035 | ||
8566b89b TT |
9036 | void |
9037 | dwarf2_psymtab::expand_psymtab (struct objfile *objfile) | |
c906108c | 9038 | { |
af758d11 | 9039 | gdb_assert (!readin_p (objfile)); |
95554aad | 9040 | |
48993951 | 9041 | expand_dependencies (objfile); |
aaa75496 | 9042 | |
97a1449a SM |
9043 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); |
9044 | dw2_do_instantiate_symtab (per_cu_data, per_objfile, false); | |
5717c425 | 9045 | gdb_assert (get_compunit_symtab (objfile) != nullptr); |
10b3939b DJ |
9046 | } |
9047 | ||
af758d11 SM |
9048 | /* See psympriv.h. */ |
9049 | ||
9050 | bool | |
9051 | dwarf2_psymtab::readin_p (struct objfile *objfile) const | |
9052 | { | |
9053 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9054 | return per_objfile->symtab_set_p (per_cu_data); | |
9055 | } | |
9056 | ||
9057 | /* See psympriv.h. */ | |
9058 | ||
9059 | compunit_symtab * | |
9060 | dwarf2_psymtab::get_compunit_symtab (struct objfile *objfile) const | |
9061 | { | |
9062 | dwarf2_per_objfile *per_objfile = get_dwarf2_per_objfile (objfile); | |
9063 | return per_objfile->get_symtab (per_cu_data); | |
9064 | } | |
9065 | ||
dee91e82 DE |
9066 | /* Trivial hash function for die_info: the hash value of a DIE |
9067 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9068 | |
dee91e82 DE |
9069 | static hashval_t |
9070 | die_hash (const void *item) | |
10b3939b | 9071 | { |
9a3c8263 | 9072 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9073 | |
9c541725 | 9074 | return to_underlying (die->sect_off); |
dee91e82 | 9075 | } |
63d06c5c | 9076 | |
dee91e82 DE |
9077 | /* Trivial comparison function for die_info structures: two DIEs |
9078 | are equal if they have the same offset. */ | |
98bfdba5 | 9079 | |
dee91e82 DE |
9080 | static int |
9081 | die_eq (const void *item_lhs, const void *item_rhs) | |
9082 | { | |
9a3c8263 SM |
9083 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9084 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9085 | |
9c541725 | 9086 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9087 | } |
c906108c | 9088 | |
c0ab21c2 | 9089 | /* Load the DIEs associated with PER_CU into memory. */ |
c906108c | 9090 | |
dee91e82 | 9091 | static void |
c0ab21c2 TT |
9092 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
9093 | bool skip_partial, | |
9094 | enum language pretend_language) | |
dee91e82 | 9095 | { |
c0ab21c2 TT |
9096 | gdb_assert (! this_cu->is_debug_types); |
9097 | ||
6751ebae | 9098 | cutu_reader reader (this_cu, NULL, 1, skip_partial); |
c0ab21c2 TT |
9099 | if (reader.dummy_p) |
9100 | return; | |
9101 | ||
9102 | struct dwarf2_cu *cu = reader.cu; | |
9103 | const gdb_byte *info_ptr = reader.info_ptr; | |
6caca83c | 9104 | |
dee91e82 DE |
9105 | gdb_assert (cu->die_hash == NULL); |
9106 | cu->die_hash = | |
9107 | htab_create_alloc_ex (cu->header.length / 12, | |
9108 | die_hash, | |
9109 | die_eq, | |
9110 | NULL, | |
9111 | &cu->comp_unit_obstack, | |
9112 | hashtab_obstack_allocate, | |
9113 | dummy_obstack_deallocate); | |
e142c38c | 9114 | |
3e225074 | 9115 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
9116 | reader.comp_unit_die->child |
9117 | = read_die_and_siblings (&reader, reader.info_ptr, | |
9118 | &info_ptr, reader.comp_unit_die); | |
9119 | cu->dies = reader.comp_unit_die; | |
dee91e82 | 9120 | /* comp_unit_die is not stored in die_hash, no need. */ |
10b3939b DJ |
9121 | |
9122 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9123 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9124 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9125 | or we won't be able to build types correctly. |
9126 | Similarly, if we do not read the producer, we can not apply | |
9127 | producer-specific interpretation. */ | |
c0ab21c2 | 9128 | prepare_one_comp_unit (cu, cu->dies, pretend_language); |
6751ebae TT |
9129 | |
9130 | reader.keep (); | |
10b3939b DJ |
9131 | } |
9132 | ||
3da10d80 KS |
9133 | /* Add a DIE to the delayed physname list. */ |
9134 | ||
9135 | static void | |
9136 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9137 | const char *name, struct die_info *die, | |
9138 | struct dwarf2_cu *cu) | |
9139 | { | |
9140 | struct delayed_method_info mi; | |
9141 | mi.type = type; | |
9142 | mi.fnfield_index = fnfield_index; | |
9143 | mi.index = index; | |
9144 | mi.name = name; | |
9145 | mi.die = die; | |
c89b44cd | 9146 | cu->method_list.push_back (mi); |
3da10d80 KS |
9147 | } |
9148 | ||
3693fdb3 PA |
9149 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9150 | "const" / "volatile". If so, decrements LEN by the length of the | |
9151 | modifier and return true. Otherwise return false. */ | |
9152 | ||
9153 | template<size_t N> | |
9154 | static bool | |
9155 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9156 | { | |
9157 | size_t mod_len = sizeof (mod) - 1; | |
9158 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9159 | { | |
9160 | len -= mod_len; | |
9161 | return true; | |
9162 | } | |
9163 | return false; | |
9164 | } | |
9165 | ||
3da10d80 KS |
9166 | /* Compute the physnames of any methods on the CU's method list. |
9167 | ||
9168 | The computation of method physnames is delayed in order to avoid the | |
9169 | (bad) condition that one of the method's formal parameters is of an as yet | |
9170 | incomplete type. */ | |
9171 | ||
9172 | static void | |
9173 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9174 | { | |
3693fdb3 | 9175 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9176 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9177 | return; |
9178 | gdb_assert (cu->language == language_cplus); | |
9179 | ||
52941706 | 9180 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9181 | { |
1d06ead6 | 9182 | const char *physname; |
3da10d80 | 9183 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9184 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9185 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9186 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9187 | = physname ? physname : ""; |
3693fdb3 PA |
9188 | |
9189 | /* Since there's no tag to indicate whether a method is a | |
9190 | const/volatile overload, extract that information out of the | |
9191 | demangled name. */ | |
9192 | if (physname != NULL) | |
9193 | { | |
9194 | size_t len = strlen (physname); | |
9195 | ||
9196 | while (1) | |
9197 | { | |
9198 | if (physname[len] == ')') /* shortcut */ | |
9199 | break; | |
9200 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9201 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9202 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9203 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9204 | else |
9205 | break; | |
9206 | } | |
9207 | } | |
3da10d80 | 9208 | } |
c89b44cd TT |
9209 | |
9210 | /* The list is no longer needed. */ | |
9211 | cu->method_list.clear (); | |
3da10d80 KS |
9212 | } |
9213 | ||
a766d390 DE |
9214 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9215 | and it's not clear if/how imported objects will appear. | |
9216 | To keep Go support simple until that's worked out, | |
9217 | go back through what we've read and create something usable. | |
9218 | We could do this while processing each DIE, and feels kinda cleaner, | |
9219 | but that way is more invasive. | |
9220 | This is to, for example, allow the user to type "p var" or "b main" | |
9221 | without having to specify the package name, and allow lookups | |
9222 | of module.object to work in contexts that use the expression | |
9223 | parser. */ | |
9224 | ||
9225 | static void | |
9226 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9227 | { | |
421d1616 | 9228 | gdb::unique_xmalloc_ptr<char> package_name; |
a766d390 DE |
9229 | struct pending *list; |
9230 | int i; | |
9231 | ||
c24bdb02 | 9232 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9233 | list != NULL; |
9234 | list = list->next) | |
a766d390 DE |
9235 | { |
9236 | for (i = 0; i < list->nsyms; ++i) | |
9237 | { | |
9238 | struct symbol *sym = list->symbol[i]; | |
9239 | ||
c1b5c1eb | 9240 | if (sym->language () == language_go |
a766d390 DE |
9241 | && SYMBOL_CLASS (sym) == LOC_BLOCK) |
9242 | { | |
421d1616 TT |
9243 | gdb::unique_xmalloc_ptr<char> this_package_name |
9244 | (go_symbol_package_name (sym)); | |
a766d390 DE |
9245 | |
9246 | if (this_package_name == NULL) | |
9247 | continue; | |
9248 | if (package_name == NULL) | |
421d1616 | 9249 | package_name = std::move (this_package_name); |
a766d390 DE |
9250 | else |
9251 | { | |
5e22e966 | 9252 | struct objfile *objfile = cu->per_objfile->objfile; |
421d1616 | 9253 | if (strcmp (package_name.get (), this_package_name.get ()) != 0) |
b98664d3 | 9254 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9255 | (symbol_symtab (sym) != NULL |
9256 | ? symtab_to_filename_for_display | |
9257 | (symbol_symtab (sym)) | |
e3b94546 | 9258 | : objfile_name (objfile)), |
421d1616 | 9259 | this_package_name.get (), package_name.get ()); |
a766d390 DE |
9260 | } |
9261 | } | |
9262 | } | |
9263 | } | |
9264 | ||
9265 | if (package_name != NULL) | |
9266 | { | |
5e22e966 | 9267 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 9268 | const char *saved_package_name = objfile->intern (package_name.get ()); |
19f392bc UW |
9269 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9270 | saved_package_name); | |
a766d390 DE |
9271 | struct symbol *sym; |
9272 | ||
8c14c3a3 | 9273 | sym = new (&objfile->objfile_obstack) symbol; |
d3ecddab | 9274 | sym->set_language (language_go, &objfile->objfile_obstack); |
4d4eaa30 | 9275 | sym->compute_and_set_names (saved_package_name, false, objfile->per_bfd); |
a766d390 DE |
9276 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9277 | e.g., "main" finds the "main" module and not C's main(). */ | |
9278 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9279 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9280 | SYMBOL_TYPE (sym) = type; |
9281 | ||
c24bdb02 | 9282 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9283 | } |
9284 | } | |
9285 | ||
c9317f21 TT |
9286 | /* Allocate a fully-qualified name consisting of the two parts on the |
9287 | obstack. */ | |
9288 | ||
9289 | static const char * | |
9290 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9291 | { | |
9292 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9293 | } | |
9294 | ||
9c6a1327 TT |
9295 | /* A helper that allocates a variant part to attach to a Rust enum |
9296 | type. OBSTACK is where the results should be allocated. TYPE is | |
9297 | the type we're processing. DISCRIMINANT_INDEX is the index of the | |
9298 | discriminant. It must be the index of one of the fields of TYPE. | |
9299 | DEFAULT_INDEX is the index of the default field; or -1 if there is | |
9300 | no default. RANGES is indexed by "effective" field number (the | |
9301 | field index, but omitting the discriminant and default fields) and | |
9302 | must hold the discriminant values used by the variants. Note that | |
9303 | RANGES must have a lifetime at least as long as OBSTACK -- either | |
9304 | already allocated on it, or static. */ | |
c9317f21 | 9305 | |
9c6a1327 TT |
9306 | static void |
9307 | alloc_rust_variant (struct obstack *obstack, struct type *type, | |
9308 | int discriminant_index, int default_index, | |
9309 | gdb::array_view<discriminant_range> ranges) | |
9310 | { | |
9311 | /* When DISCRIMINANT_INDEX == -1, we have a univariant enum. Those | |
9312 | must be handled by the caller. */ | |
9313 | gdb_assert (discriminant_index >= 0 | |
1f704f76 | 9314 | && discriminant_index < type->num_fields ()); |
c9317f21 | 9315 | gdb_assert (default_index == -1 |
1f704f76 | 9316 | || (default_index >= 0 && default_index < type->num_fields ())); |
c9317f21 | 9317 | |
9c6a1327 | 9318 | /* We have one variant for each non-discriminant field. */ |
1f704f76 | 9319 | int n_variants = type->num_fields () - 1; |
c9317f21 | 9320 | |
9c6a1327 TT |
9321 | variant *variants = new (obstack) variant[n_variants]; |
9322 | int var_idx = 0; | |
9323 | int range_idx = 0; | |
1f704f76 | 9324 | for (int i = 0; i < type->num_fields (); ++i) |
9c6a1327 TT |
9325 | { |
9326 | if (i == discriminant_index) | |
9327 | continue; | |
c9317f21 | 9328 | |
9c6a1327 TT |
9329 | variants[var_idx].first_field = i; |
9330 | variants[var_idx].last_field = i + 1; | |
9331 | ||
9332 | /* The default field does not need a range, but other fields do. | |
9333 | We skipped the discriminant above. */ | |
9334 | if (i != default_index) | |
9335 | { | |
9336 | variants[var_idx].discriminants = ranges.slice (range_idx, 1); | |
9337 | ++range_idx; | |
9338 | } | |
c9317f21 | 9339 | |
9c6a1327 TT |
9340 | ++var_idx; |
9341 | } | |
9342 | ||
9343 | gdb_assert (range_idx == ranges.size ()); | |
9344 | gdb_assert (var_idx == n_variants); | |
9345 | ||
9346 | variant_part *part = new (obstack) variant_part; | |
9347 | part->discriminant_index = discriminant_index; | |
9348 | part->is_unsigned = TYPE_UNSIGNED (TYPE_FIELD_TYPE (type, | |
9349 | discriminant_index)); | |
9350 | part->variants = gdb::array_view<variant> (variants, n_variants); | |
9351 | ||
9352 | void *storage = obstack_alloc (obstack, sizeof (gdb::array_view<variant_part>)); | |
9353 | gdb::array_view<variant_part> *prop_value | |
9354 | = new (storage) gdb::array_view<variant_part> (part, 1); | |
c9317f21 | 9355 | |
9c6a1327 TT |
9356 | struct dynamic_prop prop; |
9357 | prop.kind = PROP_VARIANT_PARTS; | |
9358 | prop.data.variant_parts = prop_value; | |
9359 | ||
5c54719c | 9360 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
c9317f21 TT |
9361 | } |
9362 | ||
9363 | /* Some versions of rustc emitted enums in an unusual way. | |
9364 | ||
9365 | Ordinary enums were emitted as unions. The first element of each | |
9366 | structure in the union was named "RUST$ENUM$DISR". This element | |
9367 | held the discriminant. | |
9368 | ||
9369 | These versions of Rust also implemented the "non-zero" | |
9370 | optimization. When the enum had two values, and one is empty and | |
9371 | the other holds a pointer that cannot be zero, the pointer is used | |
9372 | as the discriminant, with a zero value meaning the empty variant. | |
9373 | Here, the union's first member is of the form | |
9374 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9375 | where the fieldnos are the indices of the fields that should be | |
9376 | traversed in order to find the field (which may be several fields deep) | |
9377 | and the variantname is the name of the variant of the case when the | |
9378 | field is zero. | |
9379 | ||
9380 | This function recognizes whether TYPE is of one of these forms, | |
9381 | and, if so, smashes it to be a variant type. */ | |
9382 | ||
9383 | static void | |
9384 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9385 | { | |
78134374 | 9386 | gdb_assert (type->code () == TYPE_CODE_UNION); |
c9317f21 TT |
9387 | |
9388 | /* We don't need to deal with empty enums. */ | |
1f704f76 | 9389 | if (type->num_fields () == 0) |
c9317f21 TT |
9390 | return; |
9391 | ||
9392 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
1f704f76 | 9393 | if (type->num_fields () == 1 |
c9317f21 TT |
9394 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) |
9395 | { | |
9396 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9397 | ||
9398 | /* Decode the field name to find the offset of the | |
9399 | discriminant. */ | |
9400 | ULONGEST bit_offset = 0; | |
9401 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); | |
9402 | while (name[0] >= '0' && name[0] <= '9') | |
9403 | { | |
9404 | char *tail; | |
9405 | unsigned long index = strtoul (name, &tail, 10); | |
9406 | name = tail; | |
9407 | if (*name != '$' | |
1f704f76 | 9408 | || index >= field_type->num_fields () |
c9317f21 TT |
9409 | || (TYPE_FIELD_LOC_KIND (field_type, index) |
9410 | != FIELD_LOC_KIND_BITPOS)) | |
9411 | { | |
b98664d3 | 9412 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9413 | "[in module %s]"), |
9414 | TYPE_FIELD_NAME (type, 0), | |
9415 | objfile_name (objfile)); | |
9416 | return; | |
9417 | } | |
9418 | ++name; | |
9419 | ||
9420 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
9421 | field_type = TYPE_FIELD_TYPE (field_type, index); | |
9422 | } | |
9423 | ||
9c6a1327 TT |
9424 | /* Smash this type to be a structure type. We have to do this |
9425 | because the type has already been recorded. */ | |
67607e24 | 9426 | type->set_code (TYPE_CODE_STRUCT); |
5e33d5f4 | 9427 | type->set_num_fields (3); |
9c6a1327 | 9428 | /* Save the field we care about. */ |
ceacbf6e | 9429 | struct field saved_field = type->field (0); |
3cabb6b0 SM |
9430 | type->set_fields |
9431 | ((struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field))); | |
c9317f21 | 9432 | |
9c6a1327 TT |
9433 | /* Put the discriminant at index 0. */ |
9434 | TYPE_FIELD_TYPE (type, 0) = field_type; | |
9435 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; | |
9436 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
ceacbf6e | 9437 | SET_FIELD_BITPOS (type->field (0), bit_offset); |
c9317f21 TT |
9438 | |
9439 | /* The order of fields doesn't really matter, so put the real | |
9440 | field at index 1 and the data-less field at index 2. */ | |
ceacbf6e | 9441 | type->field (1) = saved_field; |
9c6a1327 | 9442 | TYPE_FIELD_NAME (type, 1) |
7d93a1e0 | 9443 | = rust_last_path_segment (TYPE_FIELD_TYPE (type, 1)->name ()); |
d0e39ea2 | 9444 | TYPE_FIELD_TYPE (type, 1)->set_name |
7d93a1e0 | 9445 | (rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
d0e39ea2 | 9446 | TYPE_FIELD_NAME (type, 1))); |
c9317f21 TT |
9447 | |
9448 | const char *dataless_name | |
7d93a1e0 | 9449 | = rust_fully_qualify (&objfile->objfile_obstack, type->name (), |
c9317f21 TT |
9450 | name); |
9451 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9452 | dataless_name); | |
9c6a1327 | 9453 | TYPE_FIELD_TYPE (type, 2) = dataless_type; |
c9317f21 TT |
9454 | /* NAME points into the original discriminant name, which |
9455 | already has the correct lifetime. */ | |
9c6a1327 | 9456 | TYPE_FIELD_NAME (type, 2) = name; |
ceacbf6e | 9457 | SET_FIELD_BITPOS (type->field (2), 0); |
c9317f21 | 9458 | |
9c6a1327 TT |
9459 | /* Indicate that this is a variant type. */ |
9460 | static discriminant_range ranges[1] = { { 0, 0 } }; | |
9461 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, ranges); | |
c9317f21 | 9462 | } |
77c2dba3 TT |
9463 | /* A union with a single anonymous field is probably an old-style |
9464 | univariant enum. */ | |
1f704f76 | 9465 | else if (type->num_fields () == 1 && streq (TYPE_FIELD_NAME (type, 0), "")) |
c9317f21 | 9466 | { |
c9317f21 TT |
9467 | /* Smash this type to be a structure type. We have to do this |
9468 | because the type has already been recorded. */ | |
67607e24 | 9469 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9470 | |
9c6a1327 | 9471 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); |
c9317f21 | 9472 | const char *variant_name |
7d93a1e0 | 9473 | = rust_last_path_segment (field_type->name ()); |
9c6a1327 | 9474 | TYPE_FIELD_NAME (type, 0) = variant_name; |
d0e39ea2 SM |
9475 | field_type->set_name |
9476 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9477 | type->name (), variant_name)); |
c9317f21 TT |
9478 | } |
9479 | else | |
9480 | { | |
9481 | struct type *disr_type = nullptr; | |
1f704f76 | 9482 | for (int i = 0; i < type->num_fields (); ++i) |
c9317f21 TT |
9483 | { |
9484 | disr_type = TYPE_FIELD_TYPE (type, i); | |
9485 | ||
78134374 | 9486 | if (disr_type->code () != TYPE_CODE_STRUCT) |
a037790e TT |
9487 | { |
9488 | /* All fields of a true enum will be structs. */ | |
9489 | return; | |
9490 | } | |
1f704f76 | 9491 | else if (disr_type->num_fields () == 0) |
c9317f21 TT |
9492 | { |
9493 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9494 | disr_type = nullptr; |
c9317f21 TT |
9495 | } |
9496 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9497 | "RUST$ENUM$DISR") != 0) | |
9498 | { | |
9499 | /* Not a Rust enum. */ | |
9500 | return; | |
9501 | } | |
9502 | else | |
9503 | { | |
9504 | /* Found one. */ | |
9505 | break; | |
9506 | } | |
9507 | } | |
9508 | ||
9509 | /* If we got here without a discriminant, then it's probably | |
9510 | just a union. */ | |
9511 | if (disr_type == nullptr) | |
9512 | return; | |
9513 | ||
9514 | /* Smash this type to be a structure type. We have to do this | |
9515 | because the type has already been recorded. */ | |
67607e24 | 9516 | type->set_code (TYPE_CODE_STRUCT); |
c9317f21 | 9517 | |
9c6a1327 | 9518 | /* Make space for the discriminant field. */ |
ceacbf6e | 9519 | struct field *disr_field = &disr_type->field (0); |
9c6a1327 | 9520 | field *new_fields |
1f704f76 | 9521 | = (struct field *) TYPE_ZALLOC (type, ((type->num_fields () + 1) |
9c6a1327 | 9522 | * sizeof (struct field))); |
80fc5e77 | 9523 | memcpy (new_fields + 1, type->fields (), |
1f704f76 | 9524 | type->num_fields () * sizeof (struct field)); |
3cabb6b0 | 9525 | type->set_fields (new_fields); |
1f704f76 | 9526 | type->set_num_fields (type->num_fields () + 1); |
c9317f21 TT |
9527 | |
9528 | /* Install the discriminant at index 0 in the union. */ | |
ceacbf6e | 9529 | type->field (0) = *disr_field; |
9c6a1327 TT |
9530 | TYPE_FIELD_ARTIFICIAL (type, 0) = 1; |
9531 | TYPE_FIELD_NAME (type, 0) = "<<discriminant>>"; | |
c9317f21 TT |
9532 | |
9533 | /* We need a way to find the correct discriminant given a | |
9534 | variant name. For convenience we build a map here. */ | |
9535 | struct type *enum_type = FIELD_TYPE (*disr_field); | |
9536 | std::unordered_map<std::string, ULONGEST> discriminant_map; | |
1f704f76 | 9537 | for (int i = 0; i < enum_type->num_fields (); ++i) |
c9317f21 TT |
9538 | { |
9539 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
9540 | { | |
9541 | const char *name | |
9542 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
9543 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
9544 | } | |
9545 | } | |
9546 | ||
1f704f76 | 9547 | int n_fields = type->num_fields (); |
9c6a1327 TT |
9548 | /* We don't need a range entry for the discriminant, but we do |
9549 | need one for every other field, as there is no default | |
9550 | variant. */ | |
9551 | discriminant_range *ranges = XOBNEWVEC (&objfile->objfile_obstack, | |
9552 | discriminant_range, | |
9553 | n_fields - 1); | |
c9317f21 TT |
9554 | /* Skip the discriminant here. */ |
9555 | for (int i = 1; i < n_fields; ++i) | |
9556 | { | |
9557 | /* Find the final word in the name of this variant's type. | |
9558 | That name can be used to look up the correct | |
9559 | discriminant. */ | |
9560 | const char *variant_name | |
7d93a1e0 | 9561 | = rust_last_path_segment (TYPE_FIELD_TYPE (type, i)->name ()); |
c9317f21 TT |
9562 | |
9563 | auto iter = discriminant_map.find (variant_name); | |
9564 | if (iter != discriminant_map.end ()) | |
9c6a1327 TT |
9565 | { |
9566 | ranges[i].low = iter->second; | |
9567 | ranges[i].high = iter->second; | |
9568 | } | |
c9317f21 | 9569 | |
bedda9ac | 9570 | /* Remove the discriminant field, if it exists. */ |
9c6a1327 | 9571 | struct type *sub_type = TYPE_FIELD_TYPE (type, i); |
1f704f76 | 9572 | if (sub_type->num_fields () > 0) |
bedda9ac | 9573 | { |
5e33d5f4 | 9574 | sub_type->set_num_fields (sub_type->num_fields () - 1); |
3cabb6b0 | 9575 | sub_type->set_fields (sub_type->fields () + 1); |
bedda9ac | 9576 | } |
9c6a1327 | 9577 | TYPE_FIELD_NAME (type, i) = variant_name; |
d0e39ea2 SM |
9578 | sub_type->set_name |
9579 | (rust_fully_qualify (&objfile->objfile_obstack, | |
7d93a1e0 | 9580 | type->name (), variant_name)); |
c9317f21 | 9581 | } |
9c6a1327 TT |
9582 | |
9583 | /* Indicate that this is a variant type. */ | |
9584 | alloc_rust_variant (&objfile->objfile_obstack, type, 0, 1, | |
9585 | gdb::array_view<discriminant_range> (ranges, | |
9586 | n_fields - 1)); | |
c9317f21 TT |
9587 | } |
9588 | } | |
9589 | ||
9590 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
9591 | ||
9592 | static void | |
9593 | rust_union_quirks (struct dwarf2_cu *cu) | |
9594 | { | |
9595 | gdb_assert (cu->language == language_rust); | |
52941706 | 9596 | for (type *type_ : cu->rust_unions) |
5e22e966 | 9597 | quirk_rust_enum (type_, cu->per_objfile->objfile); |
2d79090e TT |
9598 | /* We don't need this any more. */ |
9599 | cu->rust_unions.clear (); | |
c9317f21 TT |
9600 | } |
9601 | ||
95554aad TT |
9602 | /* A helper function for computing the list of all symbol tables |
9603 | included by PER_CU. */ | |
9604 | ||
9605 | static void | |
4c39bc03 | 9606 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 9607 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 9608 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 9609 | struct compunit_symtab *immediate_parent) |
95554aad | 9610 | { |
af758d11 | 9611 | void **slot = htab_find_slot (all_children, per_cu, INSERT); |
95554aad TT |
9612 | if (*slot != NULL) |
9613 | { | |
9614 | /* This inclusion and its children have been processed. */ | |
9615 | return; | |
9616 | } | |
9617 | ||
9618 | *slot = per_cu; | |
af758d11 | 9619 | |
95554aad | 9620 | /* Only add a CU if it has a symbol table. */ |
af758d11 | 9621 | compunit_symtab *cust = per_cu->dwarf2_per_objfile->get_symtab (per_cu); |
43f3e411 | 9622 | if (cust != NULL) |
ec94af83 DE |
9623 | { |
9624 | /* If this is a type unit only add its symbol table if we haven't | |
9625 | seen it yet (type unit per_cu's can share symtabs). */ | |
9626 | if (per_cu->is_debug_types) | |
9627 | { | |
43f3e411 | 9628 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
9629 | if (*slot == NULL) |
9630 | { | |
43f3e411 | 9631 | *slot = cust; |
4c39bc03 | 9632 | result->push_back (cust); |
43f3e411 DE |
9633 | if (cust->user == NULL) |
9634 | cust->user = immediate_parent; | |
ec94af83 DE |
9635 | } |
9636 | } | |
9637 | else | |
f9125b6c | 9638 | { |
4c39bc03 | 9639 | result->push_back (cust); |
43f3e411 DE |
9640 | if (cust->user == NULL) |
9641 | cust->user = immediate_parent; | |
f9125b6c | 9642 | } |
ec94af83 | 9643 | } |
95554aad | 9644 | |
ae640021 AB |
9645 | if (!per_cu->imported_symtabs_empty ()) |
9646 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) | |
9647 | { | |
9648 | recursively_compute_inclusions (result, all_children, | |
9649 | all_type_symtabs, ptr, cust); | |
9650 | } | |
95554aad TT |
9651 | } |
9652 | ||
43f3e411 | 9653 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
9654 | PER_CU. */ |
9655 | ||
9656 | static void | |
43f3e411 | 9657 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 9658 | { |
f4dc4d17 DE |
9659 | gdb_assert (! per_cu->is_debug_types); |
9660 | ||
ae640021 | 9661 | if (!per_cu->imported_symtabs_empty ()) |
95554aad | 9662 | { |
ae640021 | 9663 | int len; |
4c39bc03 | 9664 | std::vector<compunit_symtab *> result_symtabs; |
ec94af83 | 9665 | htab_t all_children, all_type_symtabs; |
af758d11 | 9666 | compunit_symtab *cust = per_cu->dwarf2_per_objfile->get_symtab (per_cu); |
95554aad TT |
9667 | |
9668 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 9669 | if (cust == NULL) |
95554aad TT |
9670 | return; |
9671 | ||
9672 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
9673 | NULL, xcalloc, xfree); | |
ec94af83 DE |
9674 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
9675 | NULL, xcalloc, xfree); | |
95554aad | 9676 | |
ae640021 | 9677 | for (dwarf2_per_cu_data *ptr : *per_cu->imported_symtabs) |
ec94af83 DE |
9678 | { |
9679 | recursively_compute_inclusions (&result_symtabs, all_children, | |
ae640021 | 9680 | all_type_symtabs, ptr, cust); |
ec94af83 | 9681 | } |
95554aad | 9682 | |
ec94af83 | 9683 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 9684 | len = result_symtabs.size (); |
43f3e411 | 9685 | cust->includes |
ed2dc618 | 9686 | = XOBNEWVEC (&per_cu->dwarf2_per_objfile->objfile->objfile_obstack, |
8d749320 | 9687 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
9688 | memcpy (cust->includes, result_symtabs.data (), |
9689 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 9690 | cust->includes[len] = NULL; |
95554aad | 9691 | |
95554aad | 9692 | htab_delete (all_children); |
ec94af83 | 9693 | htab_delete (all_type_symtabs); |
95554aad TT |
9694 | } |
9695 | } | |
9696 | ||
9697 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
9698 | read. */ | |
9699 | ||
9700 | static void | |
ed2dc618 | 9701 | process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 9702 | { |
5989a64e | 9703 | for (dwarf2_per_cu_data *iter : dwarf2_per_objfile->per_bfd->just_read_cus) |
f4dc4d17 DE |
9704 | { |
9705 | if (! iter->is_debug_types) | |
43f3e411 | 9706 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 9707 | } |
95554aad | 9708 | |
5989a64e | 9709 | dwarf2_per_objfile->per_bfd->just_read_cus.clear (); |
95554aad TT |
9710 | } |
9711 | ||
9cdd5dbd | 9712 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
9713 | already been loaded into memory. */ |
9714 | ||
9715 | static void | |
95554aad TT |
9716 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
9717 | enum language pretend_language) | |
10b3939b | 9718 | { |
10b3939b | 9719 | struct dwarf2_cu *cu = per_cu->cu; |
ed2dc618 SM |
9720 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9721 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
08feed99 | 9722 | struct gdbarch *gdbarch = objfile->arch (); |
10b3939b | 9723 | CORE_ADDR lowpc, highpc; |
43f3e411 | 9724 | struct compunit_symtab *cust; |
10b3939b | 9725 | CORE_ADDR baseaddr; |
4359dff1 | 9726 | struct block *static_block; |
3e29f34a | 9727 | CORE_ADDR addr; |
10b3939b | 9728 | |
b3b3bada | 9729 | baseaddr = objfile->text_section_offset (); |
10b3939b | 9730 | |
c89b44cd TT |
9731 | /* Clear the list here in case something was left over. */ |
9732 | cu->method_list.clear (); | |
10b3939b | 9733 | |
95554aad TT |
9734 | cu->language = pretend_language; |
9735 | cu->language_defn = language_def (cu->language); | |
9736 | ||
c906108c | 9737 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 9738 | process_die (cu->dies, cu); |
c906108c | 9739 | |
a766d390 DE |
9740 | /* For now fudge the Go package. */ |
9741 | if (cu->language == language_go) | |
9742 | fixup_go_packaging (cu); | |
9743 | ||
5f48f8f3 | 9744 | /* Now that we have processed all the DIEs in the CU, all the types |
3da10d80 KS |
9745 | should be complete, and it should now be safe to compute all of the |
9746 | physnames. */ | |
9747 | compute_delayed_physnames (cu); | |
3da10d80 | 9748 | |
c9317f21 TT |
9749 | if (cu->language == language_rust) |
9750 | rust_union_quirks (cu); | |
9751 | ||
fae299cd DC |
9752 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
9753 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
9754 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 9755 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 9756 | |
3e29f34a | 9757 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 9758 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
9759 | |
9760 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
9761 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
9762 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
9763 | addrmap to help ensure it has an accurate map of pc values belonging to | |
9764 | this comp unit. */ | |
9765 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
9766 | ||
c24bdb02 | 9767 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
9768 | SECT_OFF_TEXT (objfile), |
9769 | 0); | |
c906108c | 9770 | |
43f3e411 | 9771 | if (cust != NULL) |
c906108c | 9772 | { |
df15bd07 | 9773 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 9774 | |
8be455d7 JK |
9775 | /* Set symtab language to language from DW_AT_language. If the |
9776 | compilation is from a C file generated by language preprocessors, do | |
9777 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 9778 | if (!(cu->language == language_c |
40e3ad0e | 9779 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 9780 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
9781 | |
9782 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
9783 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
9784 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
9785 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
9786 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
9787 | |
9788 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
9789 | needed, it would be wrong due to missing DW_AT_producer there. | |
9790 | ||
9791 | Still one can confuse GDB by using non-standard GCC compilation | |
9792 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5f48f8f3 | 9793 | */ |
ab260dad | 9794 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 9795 | cust->locations_valid = 1; |
e0d00bc7 JK |
9796 | |
9797 | if (gcc_4_minor >= 5) | |
43f3e411 | 9798 | cust->epilogue_unwind_valid = 1; |
96408a79 | 9799 | |
43f3e411 | 9800 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 9801 | } |
9291a0cd | 9802 | |
af758d11 | 9803 | dwarf2_per_objfile->set_symtab (per_cu, cust); |
c906108c | 9804 | |
95554aad | 9805 | /* Push it for inclusion processing later. */ |
5989a64e | 9806 | dwarf2_per_objfile->per_bfd->just_read_cus.push_back (per_cu); |
804d2729 TT |
9807 | |
9808 | /* Not needed any more. */ | |
c24bdb02 | 9809 | cu->reset_builder (); |
f4dc4d17 | 9810 | } |
45cfd468 | 9811 | |
f4dc4d17 DE |
9812 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
9813 | already been loaded into memory. */ | |
9814 | ||
9815 | static void | |
9816 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
9817 | enum language pretend_language) | |
9818 | { | |
9819 | struct dwarf2_cu *cu = per_cu->cu; | |
ed2dc618 SM |
9820 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9821 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
43f3e411 | 9822 | struct compunit_symtab *cust; |
0186c6a7 DE |
9823 | struct signatured_type *sig_type; |
9824 | ||
9825 | gdb_assert (per_cu->is_debug_types); | |
9826 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 9827 | |
c89b44cd TT |
9828 | /* Clear the list here in case something was left over. */ |
9829 | cu->method_list.clear (); | |
f4dc4d17 | 9830 | |
f4dc4d17 DE |
9831 | cu->language = pretend_language; |
9832 | cu->language_defn = language_def (cu->language); | |
9833 | ||
9834 | /* The symbol tables are set up in read_type_unit_scope. */ | |
9835 | process_die (cu->dies, cu); | |
9836 | ||
9837 | /* For now fudge the Go package. */ | |
9838 | if (cu->language == language_go) | |
9839 | fixup_go_packaging (cu); | |
9840 | ||
5f48f8f3 | 9841 | /* Now that we have processed all the DIEs in the CU, all the types |
f4dc4d17 DE |
9842 | should be complete, and it should now be safe to compute all of the |
9843 | physnames. */ | |
9844 | compute_delayed_physnames (cu); | |
f4dc4d17 | 9845 | |
c9317f21 TT |
9846 | if (cu->language == language_rust) |
9847 | rust_union_quirks (cu); | |
9848 | ||
f4dc4d17 DE |
9849 | /* TUs share symbol tables. |
9850 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
9851 | of it with end_expandable_symtab. Otherwise, complete the addition of |
9852 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 9853 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 9854 | { |
c24bdb02 KS |
9855 | buildsym_compunit *builder = cu->get_builder (); |
9856 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
43f3e411 | 9857 | sig_type->type_unit_group->compunit_symtab = cust; |
f4dc4d17 | 9858 | |
43f3e411 | 9859 | if (cust != NULL) |
f4dc4d17 DE |
9860 | { |
9861 | /* Set symtab language to language from DW_AT_language. If the | |
9862 | compilation is from a C file generated by language preprocessors, | |
9863 | do not set the language if it was already deduced by | |
9864 | start_subfile. */ | |
43f3e411 DE |
9865 | if (!(cu->language == language_c |
9866 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
9867 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
9868 | } |
9869 | } | |
9870 | else | |
9871 | { | |
c24bdb02 | 9872 | cu->get_builder ()->augment_type_symtab (); |
43f3e411 | 9873 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
9874 | } |
9875 | ||
af758d11 | 9876 | dwarf2_per_objfile->set_symtab (per_cu, cust); |
804d2729 TT |
9877 | |
9878 | /* Not needed any more. */ | |
c24bdb02 | 9879 | cu->reset_builder (); |
c906108c SS |
9880 | } |
9881 | ||
95554aad TT |
9882 | /* Process an imported unit DIE. */ |
9883 | ||
9884 | static void | |
9885 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
9886 | { | |
9887 | struct attribute *attr; | |
9888 | ||
f4dc4d17 DE |
9889 | /* For now we don't handle imported units in type units. */ |
9890 | if (cu->per_cu->is_debug_types) | |
9891 | { | |
9892 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
9893 | " supported in type units [in module %s]"), | |
5e22e966 | 9894 | objfile_name (cu->per_objfile->objfile)); |
f4dc4d17 DE |
9895 | } |
9896 | ||
95554aad TT |
9897 | attr = dwarf2_attr (die, DW_AT_import, cu); |
9898 | if (attr != NULL) | |
9899 | { | |
0826b30a | 9900 | sect_offset sect_off = attr->get_ref_die_offset (); |
9c541725 PA |
9901 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
9902 | dwarf2_per_cu_data *per_cu | |
5e22e966 | 9903 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, cu->per_objfile); |
95554aad | 9904 | |
58990295 TV |
9905 | /* We're importing a C++ compilation unit with tag DW_TAG_compile_unit |
9906 | into another compilation unit, at root level. Regard this as a hint, | |
9907 | and ignore it. */ | |
9908 | if (die->parent && die->parent->parent == NULL | |
9909 | && per_cu->unit_type == DW_UT_compile | |
9910 | && per_cu->lang == language_cplus) | |
9911 | return; | |
9912 | ||
69d751e3 | 9913 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad | 9914 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 9915 | load_full_comp_unit (per_cu, false, cu->language); |
95554aad | 9916 | |
ae640021 | 9917 | cu->per_cu->imported_symtabs_push (per_cu); |
95554aad TT |
9918 | } |
9919 | } | |
9920 | ||
4c8aa72d PA |
9921 | /* RAII object that represents a process_die scope: i.e., |
9922 | starts/finishes processing a DIE. */ | |
9923 | class process_die_scope | |
adde2bff | 9924 | { |
4c8aa72d PA |
9925 | public: |
9926 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
9927 | : m_die (die), m_cu (cu) | |
9928 | { | |
9929 | /* We should only be processing DIEs not already in process. */ | |
9930 | gdb_assert (!m_die->in_process); | |
9931 | m_die->in_process = true; | |
9932 | } | |
8c3cb9fa | 9933 | |
4c8aa72d PA |
9934 | ~process_die_scope () |
9935 | { | |
9936 | m_die->in_process = false; | |
9937 | ||
9938 | /* If we're done processing the DIE for the CU that owns the line | |
9939 | header, we don't need the line header anymore. */ | |
9940 | if (m_cu->line_header_die_owner == m_die) | |
9941 | { | |
9942 | delete m_cu->line_header; | |
9943 | m_cu->line_header = NULL; | |
9944 | m_cu->line_header_die_owner = NULL; | |
9945 | } | |
9946 | } | |
9947 | ||
9948 | private: | |
9949 | die_info *m_die; | |
9950 | dwarf2_cu *m_cu; | |
9951 | }; | |
adde2bff | 9952 | |
c906108c SS |
9953 | /* Process a die and its children. */ |
9954 | ||
9955 | static void | |
e7c27a73 | 9956 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9957 | { |
4c8aa72d | 9958 | process_die_scope scope (die, cu); |
adde2bff | 9959 | |
c906108c SS |
9960 | switch (die->tag) |
9961 | { | |
9962 | case DW_TAG_padding: | |
9963 | break; | |
9964 | case DW_TAG_compile_unit: | |
95554aad | 9965 | case DW_TAG_partial_unit: |
e7c27a73 | 9966 | read_file_scope (die, cu); |
c906108c | 9967 | break; |
348e048f DE |
9968 | case DW_TAG_type_unit: |
9969 | read_type_unit_scope (die, cu); | |
9970 | break; | |
c906108c | 9971 | case DW_TAG_subprogram: |
0a4b0913 AB |
9972 | /* Nested subprograms in Fortran get a prefix. */ |
9973 | if (cu->language == language_fortran | |
9974 | && die->parent != NULL | |
9975 | && die->parent->tag == DW_TAG_subprogram) | |
9976 | cu->processing_has_namespace_info = true; | |
9977 | /* Fall through. */ | |
c906108c | 9978 | case DW_TAG_inlined_subroutine: |
edb3359d | 9979 | read_func_scope (die, cu); |
c906108c SS |
9980 | break; |
9981 | case DW_TAG_lexical_block: | |
14898363 L |
9982 | case DW_TAG_try_block: |
9983 | case DW_TAG_catch_block: | |
e7c27a73 | 9984 | read_lexical_block_scope (die, cu); |
c906108c | 9985 | break; |
216f72a1 | 9986 | case DW_TAG_call_site: |
96408a79 SA |
9987 | case DW_TAG_GNU_call_site: |
9988 | read_call_site_scope (die, cu); | |
9989 | break; | |
c906108c | 9990 | case DW_TAG_class_type: |
680b30c7 | 9991 | case DW_TAG_interface_type: |
c906108c SS |
9992 | case DW_TAG_structure_type: |
9993 | case DW_TAG_union_type: | |
134d01f1 | 9994 | process_structure_scope (die, cu); |
c906108c SS |
9995 | break; |
9996 | case DW_TAG_enumeration_type: | |
134d01f1 | 9997 | process_enumeration_scope (die, cu); |
c906108c | 9998 | break; |
134d01f1 | 9999 | |
f792889a DJ |
10000 | /* These dies have a type, but processing them does not create |
10001 | a symbol or recurse to process the children. Therefore we can | |
10002 | read them on-demand through read_type_die. */ | |
c906108c | 10003 | case DW_TAG_subroutine_type: |
72019c9c | 10004 | case DW_TAG_set_type: |
c906108c | 10005 | case DW_TAG_array_type: |
c906108c | 10006 | case DW_TAG_pointer_type: |
c906108c | 10007 | case DW_TAG_ptr_to_member_type: |
c906108c | 10008 | case DW_TAG_reference_type: |
4297a3f0 | 10009 | case DW_TAG_rvalue_reference_type: |
c906108c | 10010 | case DW_TAG_string_type: |
c906108c | 10011 | break; |
134d01f1 | 10012 | |
c906108c | 10013 | case DW_TAG_base_type: |
a02abb62 | 10014 | case DW_TAG_subrange_type: |
cb249c71 | 10015 | case DW_TAG_typedef: |
134d01f1 DJ |
10016 | /* Add a typedef symbol for the type definition, if it has a |
10017 | DW_AT_name. */ | |
f792889a | 10018 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10019 | break; |
c906108c | 10020 | case DW_TAG_common_block: |
e7c27a73 | 10021 | read_common_block (die, cu); |
c906108c SS |
10022 | break; |
10023 | case DW_TAG_common_inclusion: | |
10024 | break; | |
d9fa45fe | 10025 | case DW_TAG_namespace: |
9068261f | 10026 | cu->processing_has_namespace_info = true; |
e7c27a73 | 10027 | read_namespace (die, cu); |
d9fa45fe | 10028 | break; |
5d7cb8df | 10029 | case DW_TAG_module: |
9068261f | 10030 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
10031 | read_module (die, cu); |
10032 | break; | |
d9fa45fe | 10033 | case DW_TAG_imported_declaration: |
9068261f | 10034 | cu->processing_has_namespace_info = true; |
74921315 KS |
10035 | if (read_namespace_alias (die, cu)) |
10036 | break; | |
86a73007 TT |
10037 | /* The declaration is not a global namespace alias. */ |
10038 | /* Fall through. */ | |
d9fa45fe | 10039 | case DW_TAG_imported_module: |
9068261f | 10040 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
10041 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10042 | || cu->language != language_fortran)) | |
b98664d3 | 10043 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10044 | dwarf_tag_name (die->tag)); |
10045 | read_import_statement (die, cu); | |
d9fa45fe | 10046 | break; |
95554aad TT |
10047 | |
10048 | case DW_TAG_imported_unit: | |
10049 | process_imported_unit_die (die, cu); | |
10050 | break; | |
10051 | ||
71a3c369 TT |
10052 | case DW_TAG_variable: |
10053 | read_variable (die, cu); | |
10054 | break; | |
10055 | ||
c906108c | 10056 | default: |
e7c27a73 | 10057 | new_symbol (die, NULL, cu); |
c906108c SS |
10058 | break; |
10059 | } | |
10060 | } | |
ca69b9e6 DE |
10061 | \f |
10062 | /* DWARF name computation. */ | |
c906108c | 10063 | |
94af9270 KS |
10064 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10065 | needs to have the name of the scope prepended to the name listed in the | |
10066 | die. */ | |
10067 | ||
10068 | static int | |
10069 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10070 | { | |
1c809c68 TT |
10071 | struct attribute *attr; |
10072 | ||
94af9270 KS |
10073 | switch (die->tag) |
10074 | { | |
10075 | case DW_TAG_namespace: | |
10076 | case DW_TAG_typedef: | |
10077 | case DW_TAG_class_type: | |
10078 | case DW_TAG_interface_type: | |
10079 | case DW_TAG_structure_type: | |
10080 | case DW_TAG_union_type: | |
10081 | case DW_TAG_enumeration_type: | |
10082 | case DW_TAG_enumerator: | |
10083 | case DW_TAG_subprogram: | |
08a76f8a | 10084 | case DW_TAG_inlined_subroutine: |
94af9270 | 10085 | case DW_TAG_member: |
74921315 | 10086 | case DW_TAG_imported_declaration: |
94af9270 KS |
10087 | return 1; |
10088 | ||
10089 | case DW_TAG_variable: | |
c2b0a229 | 10090 | case DW_TAG_constant: |
94af9270 KS |
10091 | /* We only need to prefix "globally" visible variables. These include |
10092 | any variable marked with DW_AT_external or any variable that | |
10093 | lives in a namespace. [Variables in anonymous namespaces | |
10094 | require prefixing, but they are not DW_AT_external.] */ | |
10095 | ||
10096 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10097 | { | |
10098 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10099 | |
94af9270 KS |
10100 | return die_needs_namespace (die_specification (die, &spec_cu), |
10101 | spec_cu); | |
10102 | } | |
10103 | ||
1c809c68 | 10104 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10105 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10106 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10107 | return 0; |
10108 | /* A variable in a lexical block of some kind does not need a | |
10109 | namespace, even though in C++ such variables may be external | |
10110 | and have a mangled name. */ | |
10111 | if (die->parent->tag == DW_TAG_lexical_block | |
10112 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10113 | || die->parent->tag == DW_TAG_catch_block |
10114 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10115 | return 0; |
10116 | return 1; | |
94af9270 KS |
10117 | |
10118 | default: | |
10119 | return 0; | |
10120 | } | |
10121 | } | |
10122 | ||
73b9be8b KS |
10123 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10124 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10125 | defined for the given DIE. */ | |
10126 | ||
10127 | static struct attribute * | |
10128 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10129 | { | |
10130 | struct attribute *attr; | |
10131 | ||
10132 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10133 | if (attr == NULL) | |
10134 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10135 | ||
10136 | return attr; | |
10137 | } | |
10138 | ||
10139 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10140 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10141 | defined for the given DIE. */ | |
10142 | ||
10143 | static const char * | |
10144 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10145 | { | |
10146 | const char *linkage_name; | |
10147 | ||
10148 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10149 | if (linkage_name == NULL) | |
10150 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10151 | ||
787de330 TT |
10152 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10153 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10154 | if (cu->language == language_rust && linkage_name != NULL | |
10155 | && strchr (linkage_name, '{') != NULL) | |
10156 | linkage_name = NULL; | |
10157 | ||
73b9be8b KS |
10158 | return linkage_name; |
10159 | } | |
10160 | ||
94af9270 | 10161 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10162 | compute the physname for the object, which include a method's: |
9c37b5ae | 10163 | - formal parameters (C++), |
a766d390 | 10164 | - receiver type (Go), |
a766d390 DE |
10165 | |
10166 | The term "physname" is a bit confusing. | |
10167 | For C++, for example, it is the demangled name. | |
10168 | For Go, for example, it's the mangled name. | |
94af9270 | 10169 | |
af6b7be1 JB |
10170 | For Ada, return the DIE's linkage name rather than the fully qualified |
10171 | name. PHYSNAME is ignored.. | |
10172 | ||
5989a64e | 10173 | The result is allocated on the objfile->per_bfd's obstack and |
45940949 | 10174 | canonicalized. */ |
94af9270 KS |
10175 | |
10176 | static const char * | |
15d034d0 TT |
10177 | dwarf2_compute_name (const char *name, |
10178 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10179 | int physname) |
10180 | { | |
5e22e966 | 10181 | struct objfile *objfile = cu->per_objfile->objfile; |
bb5ed363 | 10182 | |
94af9270 KS |
10183 | if (name == NULL) |
10184 | name = dwarf2_name (die, cu); | |
10185 | ||
2ee7123e DE |
10186 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10187 | but otherwise compute it by typename_concat inside GDB. | |
10188 | FIXME: Actually this is not really true, or at least not always true. | |
4d4eaa30 | 10189 | It's all very confusing. compute_and_set_names doesn't try to demangle |
5e2db402 | 10190 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10191 | will set the demangled name to the result of dwarf2_full_name, and it is |
10192 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10193 | if (cu->language == language_ada |
10194 | || (cu->language == language_fortran && physname)) | |
10195 | { | |
10196 | /* For Ada unit, we prefer the linkage name over the name, as | |
10197 | the former contains the exported name, which the user expects | |
10198 | to be able to reference. Ideally, we want the user to be able | |
10199 | to reference this entity using either natural or linkage name, | |
10200 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10201 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10202 | |
2ee7123e DE |
10203 | if (linkage_name != NULL) |
10204 | return linkage_name; | |
f55ee35c JK |
10205 | } |
10206 | ||
94af9270 KS |
10207 | /* These are the only languages we know how to qualify names in. */ |
10208 | if (name != NULL | |
9c37b5ae | 10209 | && (cu->language == language_cplus |
c44af4eb TT |
10210 | || cu->language == language_fortran || cu->language == language_d |
10211 | || cu->language == language_rust)) | |
94af9270 KS |
10212 | { |
10213 | if (die_needs_namespace (die, cu)) | |
10214 | { | |
0d5cff50 | 10215 | const char *prefix; |
34a68019 | 10216 | const char *canonical_name = NULL; |
94af9270 | 10217 | |
d7e74731 PA |
10218 | string_file buf; |
10219 | ||
94af9270 | 10220 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10221 | if (*prefix != '\0') |
10222 | { | |
43816ebc TT |
10223 | gdb::unique_xmalloc_ptr<char> prefixed_name |
10224 | (typename_concat (NULL, prefix, name, physname, cu)); | |
9a619af0 | 10225 | |
43816ebc | 10226 | buf.puts (prefixed_name.get ()); |
94af9270 KS |
10227 | } |
10228 | else | |
d7e74731 | 10229 | buf.puts (name); |
94af9270 | 10230 | |
98bfdba5 PA |
10231 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10232 | as children with DW_TAG_template_type_param or | |
10233 | DW_TAG_value_type_param. If the latter, add them to the name | |
10234 | here. If the name already has template parameters, then | |
10235 | skip this step; some versions of GCC emit both, and | |
10236 | it is more efficient to use the pre-computed name. | |
10237 | ||
10238 | Something to keep in mind about this process: it is very | |
10239 | unlikely, or in some cases downright impossible, to produce | |
10240 | something that will match the mangled name of a function. | |
10241 | If the definition of the function has the same debug info, | |
10242 | we should be able to match up with it anyway. But fallbacks | |
10243 | using the minimal symbol, for instance to find a method | |
10244 | implemented in a stripped copy of libstdc++, will not work. | |
10245 | If we do not have debug info for the definition, we will have to | |
10246 | match them up some other way. | |
10247 | ||
10248 | When we do name matching there is a related problem with function | |
10249 | templates; two instantiated function templates are allowed to | |
10250 | differ only by their return types, which we do not add here. */ | |
10251 | ||
10252 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10253 | { | |
10254 | struct attribute *attr; | |
10255 | struct die_info *child; | |
10256 | int first = 1; | |
10257 | ||
10258 | die->building_fullname = 1; | |
10259 | ||
10260 | for (child = die->child; child != NULL; child = child->sibling) | |
10261 | { | |
10262 | struct type *type; | |
12df843f | 10263 | LONGEST value; |
d521ce57 | 10264 | const gdb_byte *bytes; |
98bfdba5 PA |
10265 | struct dwarf2_locexpr_baton *baton; |
10266 | struct value *v; | |
10267 | ||
10268 | if (child->tag != DW_TAG_template_type_param | |
10269 | && child->tag != DW_TAG_template_value_param) | |
10270 | continue; | |
10271 | ||
10272 | if (first) | |
10273 | { | |
d7e74731 | 10274 | buf.puts ("<"); |
98bfdba5 PA |
10275 | first = 0; |
10276 | } | |
10277 | else | |
d7e74731 | 10278 | buf.puts (", "); |
98bfdba5 PA |
10279 | |
10280 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10281 | if (attr == NULL) | |
10282 | { | |
b98664d3 | 10283 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10284 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10285 | continue; |
10286 | } | |
10287 | type = die_type (child, cu); | |
10288 | ||
10289 | if (child->tag == DW_TAG_template_type_param) | |
10290 | { | |
c1ec8cea TT |
10291 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10292 | &type_print_raw_options); | |
98bfdba5 PA |
10293 | continue; |
10294 | } | |
10295 | ||
10296 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10297 | if (attr == NULL) | |
10298 | { | |
b98664d3 | 10299 | complaint (_("template parameter missing " |
3e43a32a | 10300 | "DW_AT_const_value")); |
d7e74731 | 10301 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10302 | continue; |
10303 | } | |
10304 | ||
10305 | dwarf2_const_value_attr (attr, type, name, | |
10306 | &cu->comp_unit_obstack, cu, | |
10307 | &value, &bytes, &baton); | |
10308 | ||
10309 | if (TYPE_NOSIGN (type)) | |
10310 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
10311 | changed, this can use value_print instead. */ | |
d7e74731 | 10312 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10313 | else |
10314 | { | |
10315 | struct value_print_options opts; | |
10316 | ||
10317 | if (baton != NULL) | |
10318 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10319 | baton->data, | |
10320 | baton->size, | |
10321 | baton->per_cu); | |
10322 | else if (bytes != NULL) | |
10323 | { | |
10324 | v = allocate_value (type); | |
10325 | memcpy (value_contents_writeable (v), bytes, | |
10326 | TYPE_LENGTH (type)); | |
10327 | } | |
10328 | else | |
10329 | v = value_from_longest (type, value); | |
10330 | ||
3e43a32a MS |
10331 | /* Specify decimal so that we do not depend on |
10332 | the radix. */ | |
98bfdba5 PA |
10333 | get_formatted_print_options (&opts, 'd'); |
10334 | opts.raw = 1; | |
d7e74731 | 10335 | value_print (v, &buf, &opts); |
98bfdba5 | 10336 | release_value (v); |
98bfdba5 PA |
10337 | } |
10338 | } | |
10339 | ||
10340 | die->building_fullname = 0; | |
10341 | ||
10342 | if (!first) | |
10343 | { | |
10344 | /* Close the argument list, with a space if necessary | |
10345 | (nested templates). */ | |
d7e74731 PA |
10346 | if (!buf.empty () && buf.string ().back () == '>') |
10347 | buf.puts (" >"); | |
98bfdba5 | 10348 | else |
d7e74731 | 10349 | buf.puts (">"); |
98bfdba5 PA |
10350 | } |
10351 | } | |
10352 | ||
9c37b5ae | 10353 | /* For C++ methods, append formal parameter type |
94af9270 | 10354 | information, if PHYSNAME. */ |
6e70227d | 10355 | |
94af9270 | 10356 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10357 | && cu->language == language_cplus) |
94af9270 KS |
10358 | { |
10359 | struct type *type = read_type_die (die, cu); | |
10360 | ||
d7e74731 | 10361 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10362 | &type_print_raw_options); |
94af9270 | 10363 | |
9c37b5ae | 10364 | if (cu->language == language_cplus) |
94af9270 | 10365 | { |
60430eff DJ |
10366 | /* Assume that an artificial first parameter is |
10367 | "this", but do not crash if it is not. RealView | |
10368 | marks unnamed (and thus unused) parameters as | |
10369 | artificial; there is no way to differentiate | |
10370 | the two cases. */ | |
1f704f76 | 10371 | if (type->num_fields () > 0 |
94af9270 | 10372 | && TYPE_FIELD_ARTIFICIAL (type, 0) |
78134374 | 10373 | && TYPE_FIELD_TYPE (type, 0)->code () == TYPE_CODE_PTR |
3e43a32a MS |
10374 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
10375 | 0)))) | |
d7e74731 | 10376 | buf.puts (" const"); |
94af9270 KS |
10377 | } |
10378 | } | |
10379 | ||
d7e74731 | 10380 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10381 | |
10382 | if (cu->language == language_cplus) | |
34a68019 | 10383 | canonical_name |
322a8516 | 10384 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
be1e3d3e | 10385 | objfile); |
34a68019 TT |
10386 | |
10387 | /* If we only computed INTERMEDIATE_NAME, or if | |
10388 | INTERMEDIATE_NAME is already canonical, then we need to | |
be1e3d3e | 10389 | intern it. */ |
322a8516 | 10390 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
be1e3d3e | 10391 | name = objfile->intern (intermediate_name); |
34a68019 TT |
10392 | else |
10393 | name = canonical_name; | |
94af9270 KS |
10394 | } |
10395 | } | |
10396 | ||
10397 | return name; | |
10398 | } | |
10399 | ||
0114d602 DJ |
10400 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10401 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10402 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10403 | not have a name. NAME may either be from a previous call to |
10404 | dwarf2_name or NULL. | |
10405 | ||
9c37b5ae | 10406 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10407 | |
10408 | static const char * | |
15d034d0 | 10409 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10410 | { |
94af9270 KS |
10411 | return dwarf2_compute_name (name, die, cu, 0); |
10412 | } | |
0114d602 | 10413 | |
94af9270 KS |
10414 | /* Construct a physname for the given DIE in CU. NAME may either be |
10415 | from a previous call to dwarf2_name or NULL. The result will be | |
10416 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10417 | name. | |
0114d602 | 10418 | |
9c37b5ae | 10419 | The output string will be canonicalized (if C++). */ |
0114d602 | 10420 | |
94af9270 | 10421 | static const char * |
15d034d0 | 10422 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10423 | { |
5e22e966 | 10424 | struct objfile *objfile = cu->per_objfile->objfile; |
900e11f9 | 10425 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10426 | int need_copy = 1; |
10427 | ||
10428 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10429 | on its own. */ | |
10430 | if (!die_needs_namespace (die, cu)) | |
10431 | return dwarf2_compute_name (name, die, cu, 1); | |
10432 | ||
906bb4c5 TT |
10433 | if (cu->language != language_rust) |
10434 | mangled = dw2_linkage_name (die, cu); | |
900e11f9 JK |
10435 | |
10436 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
10437 | has computed. */ | |
791afaa2 | 10438 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10439 | if (mangled != NULL) |
900e11f9 | 10440 | { |
900e11f9 | 10441 | |
59cc4834 JB |
10442 | if (language_def (cu->language)->la_store_sym_names_in_linkage_form_p) |
10443 | { | |
10444 | /* Do nothing (do not demangle the symbol name). */ | |
10445 | } | |
10446 | else if (cu->language == language_go) | |
a766d390 | 10447 | { |
5e2db402 TT |
10448 | /* This is a lie, but we already lie to the caller new_symbol. |
10449 | new_symbol assumes we return the mangled name. | |
a766d390 | 10450 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
10451 | } |
10452 | else | |
10453 | { | |
0eb876f5 JB |
10454 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10455 | their return type. It is easier for GDB users to search | |
10456 | for such functions as `name(params)' than `long name(params)'. | |
10457 | In such case the minimal symbol names do not match the full | |
10458 | symbol names but for template functions there is never a need | |
10459 | to look up their definition from their declaration so | |
10460 | the only disadvantage remains the minimal symbol variant | |
10461 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10462 | demangled.reset (gdb_demangle (mangled, |
10463 | (DMGL_PARAMS | DMGL_ANSI | |
10464 | | DMGL_RET_DROP))); | |
a766d390 | 10465 | } |
900e11f9 | 10466 | if (demangled) |
791afaa2 | 10467 | canon = demangled.get (); |
900e11f9 JK |
10468 | else |
10469 | { | |
10470 | canon = mangled; | |
10471 | need_copy = 0; | |
10472 | } | |
10473 | } | |
10474 | ||
10475 | if (canon == NULL || check_physname) | |
10476 | { | |
10477 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
10478 | ||
10479 | if (canon != NULL && strcmp (physname, canon) != 0) | |
10480 | { | |
10481 | /* It may not mean a bug in GDB. The compiler could also | |
10482 | compute DW_AT_linkage_name incorrectly. But in such case | |
10483 | GDB would need to be bug-to-bug compatible. */ | |
10484 | ||
b98664d3 | 10485 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
10486 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
10487 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 10488 | objfile_name (objfile)); |
900e11f9 JK |
10489 | |
10490 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
10491 | is available here - over computed PHYSNAME. It is safer | |
10492 | against both buggy GDB and buggy compilers. */ | |
10493 | ||
10494 | retval = canon; | |
10495 | } | |
10496 | else | |
10497 | { | |
10498 | retval = physname; | |
10499 | need_copy = 0; | |
10500 | } | |
10501 | } | |
10502 | else | |
10503 | retval = canon; | |
10504 | ||
10505 | if (need_copy) | |
be1e3d3e | 10506 | retval = objfile->intern (retval); |
900e11f9 | 10507 | |
900e11f9 | 10508 | return retval; |
0114d602 DJ |
10509 | } |
10510 | ||
74921315 KS |
10511 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
10512 | a new symbol for it. | |
10513 | ||
10514 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
10515 | ||
10516 | static int | |
10517 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
10518 | { | |
10519 | struct attribute *attr; | |
10520 | ||
10521 | /* If the die does not have a name, this is not a namespace | |
10522 | alias. */ | |
10523 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
10524 | if (attr != NULL) | |
10525 | { | |
10526 | int num; | |
10527 | struct die_info *d = die; | |
10528 | struct dwarf2_cu *imported_cu = cu; | |
10529 | ||
10530 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
10531 | keep inspecting DIEs until we hit the underlying import. */ | |
10532 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
10533 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
10534 | { | |
10535 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
10536 | if (attr == NULL) | |
10537 | break; | |
10538 | ||
10539 | d = follow_die_ref (d, attr, &imported_cu); | |
10540 | if (d->tag != DW_TAG_imported_declaration) | |
10541 | break; | |
10542 | } | |
10543 | ||
10544 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
10545 | { | |
b98664d3 | 10546 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 10547 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
10548 | return 0; |
10549 | } | |
10550 | ||
10551 | if (attr != NULL) | |
10552 | { | |
10553 | struct type *type; | |
0826b30a | 10554 | sect_offset sect_off = attr->get_ref_die_offset (); |
74921315 | 10555 | |
9c541725 | 10556 | type = get_die_type_at_offset (sect_off, cu->per_cu); |
78134374 | 10557 | if (type != NULL && type->code () == TYPE_CODE_NAMESPACE) |
74921315 KS |
10558 | { |
10559 | /* This declaration is a global namespace alias. Add | |
10560 | a symbol for it whose type is the aliased namespace. */ | |
10561 | new_symbol (die, type, cu); | |
10562 | return 1; | |
10563 | } | |
10564 | } | |
10565 | } | |
10566 | ||
10567 | return 0; | |
10568 | } | |
10569 | ||
22cee43f | 10570 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 10571 | current context for CU. |
22cee43f PMR |
10572 | |
10573 | For Ada, imported declarations can materialize renamings, which *may* be | |
10574 | global. However it is impossible (for now?) in DWARF to distinguish | |
10575 | "external" imported declarations and "static" ones. As all imported | |
10576 | declarations seem to be static in all other languages, make them all CU-wide | |
10577 | global only in Ada. */ | |
10578 | ||
10579 | static struct using_direct ** | |
804d2729 | 10580 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 10581 | { |
c24bdb02 KS |
10582 | if (cu->language == language_ada |
10583 | && cu->get_builder ()->outermost_context_p ()) | |
10584 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 10585 | else |
c24bdb02 | 10586 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
10587 | } |
10588 | ||
27aa8d6a SW |
10589 | /* Read the import statement specified by the given die and record it. */ |
10590 | ||
10591 | static void | |
10592 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
10593 | { | |
5e22e966 | 10594 | struct objfile *objfile = cu->per_objfile->objfile; |
27aa8d6a | 10595 | struct attribute *import_attr; |
32019081 | 10596 | struct die_info *imported_die, *child_die; |
de4affc9 | 10597 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 10598 | const char *imported_name; |
794684b6 | 10599 | const char *imported_name_prefix; |
13387711 SW |
10600 | const char *canonical_name; |
10601 | const char *import_alias; | |
10602 | const char *imported_declaration = NULL; | |
794684b6 | 10603 | const char *import_prefix; |
eb1e02fd | 10604 | std::vector<const char *> excludes; |
13387711 | 10605 | |
27aa8d6a SW |
10606 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
10607 | if (import_attr == NULL) | |
10608 | { | |
b98664d3 | 10609 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
10610 | dwarf_tag_name (die->tag)); |
10611 | return; | |
10612 | } | |
10613 | ||
de4affc9 CC |
10614 | imported_cu = cu; |
10615 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
10616 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
10617 | if (imported_name == NULL) |
10618 | { | |
10619 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
10620 | ||
10621 | The import in the following code: | |
10622 | namespace A | |
10623 | { | |
10624 | typedef int B; | |
10625 | } | |
10626 | ||
10627 | int main () | |
10628 | { | |
10629 | using A::B; | |
10630 | B b; | |
10631 | return b; | |
10632 | } | |
10633 | ||
10634 | ... | |
10635 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
10636 | <52> DW_AT_decl_file : 1 | |
10637 | <53> DW_AT_decl_line : 6 | |
10638 | <54> DW_AT_import : <0x75> | |
10639 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
10640 | <59> DW_AT_name : B | |
10641 | <5b> DW_AT_decl_file : 1 | |
10642 | <5c> DW_AT_decl_line : 2 | |
10643 | <5d> DW_AT_type : <0x6e> | |
10644 | ... | |
10645 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
10646 | <76> DW_AT_byte_size : 4 | |
10647 | <77> DW_AT_encoding : 5 (signed) | |
10648 | ||
10649 | imports the wrong die ( 0x75 instead of 0x58 ). | |
10650 | This case will be ignored until the gcc bug is fixed. */ | |
10651 | return; | |
10652 | } | |
10653 | ||
82856980 SW |
10654 | /* Figure out the local name after import. */ |
10655 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 10656 | |
794684b6 SW |
10657 | /* Figure out where the statement is being imported to. */ |
10658 | import_prefix = determine_prefix (die, cu); | |
10659 | ||
10660 | /* Figure out what the scope of the imported die is and prepend it | |
10661 | to the name of the imported die. */ | |
de4affc9 | 10662 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 10663 | |
f55ee35c JK |
10664 | if (imported_die->tag != DW_TAG_namespace |
10665 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 10666 | { |
13387711 SW |
10667 | imported_declaration = imported_name; |
10668 | canonical_name = imported_name_prefix; | |
794684b6 | 10669 | } |
13387711 | 10670 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 10671 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
10672 | imported_name_prefix, |
10673 | (cu->language == language_d ? "." : "::"), | |
10674 | imported_name, (char *) NULL); | |
13387711 SW |
10675 | else |
10676 | canonical_name = imported_name; | |
794684b6 | 10677 | |
32019081 JK |
10678 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
10679 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 10680 | child_die = child_die->sibling) |
32019081 JK |
10681 | { |
10682 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
10683 | represented by an imported module entry with an import attribute | |
10684 | referring to the module and owned entries corresponding to those | |
10685 | entities that are renamed as part of being imported. */ | |
10686 | ||
10687 | if (child_die->tag != DW_TAG_imported_declaration) | |
10688 | { | |
b98664d3 | 10689 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
10690 | "- DIE at %s [in module %s]"), |
10691 | sect_offset_str (child_die->sect_off), | |
10692 | objfile_name (objfile)); | |
32019081 JK |
10693 | continue; |
10694 | } | |
10695 | ||
10696 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
10697 | if (import_attr == NULL) | |
10698 | { | |
b98664d3 | 10699 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
10700 | dwarf_tag_name (child_die->tag)); |
10701 | continue; | |
10702 | } | |
10703 | ||
10704 | imported_cu = cu; | |
10705 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
10706 | &imported_cu); | |
10707 | imported_name = dwarf2_name (imported_die, imported_cu); | |
10708 | if (imported_name == NULL) | |
10709 | { | |
b98664d3 | 10710 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
10711 | "imported name - DIE at %s [in module %s]"), |
10712 | sect_offset_str (child_die->sect_off), | |
10713 | objfile_name (objfile)); | |
32019081 JK |
10714 | continue; |
10715 | } | |
10716 | ||
eb1e02fd | 10717 | excludes.push_back (imported_name); |
32019081 JK |
10718 | |
10719 | process_die (child_die, cu); | |
10720 | } | |
10721 | ||
804d2729 | 10722 | add_using_directive (using_directives (cu), |
22cee43f PMR |
10723 | import_prefix, |
10724 | canonical_name, | |
10725 | import_alias, | |
10726 | imported_declaration, | |
10727 | excludes, | |
10728 | 0, | |
10729 | &objfile->objfile_obstack); | |
27aa8d6a SW |
10730 | } |
10731 | ||
5230b05a WT |
10732 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
10733 | types, but gives them a size of zero. Starting with version 14, | |
10734 | ICC is compatible with GCC. */ | |
10735 | ||
9068261f | 10736 | static bool |
5230b05a WT |
10737 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
10738 | { | |
10739 | if (!cu->checked_producer) | |
10740 | check_producer (cu); | |
10741 | ||
10742 | return cu->producer_is_icc_lt_14; | |
10743 | } | |
10744 | ||
eb77c9df AB |
10745 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
10746 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
10747 | which says that void functions should not have a DW_AT_type. */ | |
10748 | ||
10749 | static bool | |
10750 | producer_is_icc (struct dwarf2_cu *cu) | |
10751 | { | |
10752 | if (!cu->checked_producer) | |
10753 | check_producer (cu); | |
10754 | ||
10755 | return cu->producer_is_icc; | |
10756 | } | |
10757 | ||
1b80a9fa JK |
10758 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
10759 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
10760 | this, it was first present in GCC release 4.3.0. */ | |
10761 | ||
9068261f | 10762 | static bool |
1b80a9fa JK |
10763 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
10764 | { | |
10765 | if (!cu->checked_producer) | |
10766 | check_producer (cu); | |
10767 | ||
10768 | return cu->producer_is_gcc_lt_4_3; | |
10769 | } | |
10770 | ||
d721ba37 PA |
10771 | static file_and_directory |
10772 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 10773 | { |
d721ba37 PA |
10774 | file_and_directory res; |
10775 | ||
9291a0cd TT |
10776 | /* Find the filename. Do not use dwarf2_name here, since the filename |
10777 | is not a source language identifier. */ | |
d721ba37 PA |
10778 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
10779 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 10780 | |
d721ba37 PA |
10781 | if (res.comp_dir == NULL |
10782 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
10783 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 10784 | { |
d721ba37 PA |
10785 | res.comp_dir_storage = ldirname (res.name); |
10786 | if (!res.comp_dir_storage.empty ()) | |
10787 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 10788 | } |
d721ba37 | 10789 | if (res.comp_dir != NULL) |
9291a0cd TT |
10790 | { |
10791 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
10792 | directory, get rid of it. */ | |
d721ba37 | 10793 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 10794 | |
d721ba37 PA |
10795 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
10796 | res.comp_dir = cp + 1; | |
9291a0cd TT |
10797 | } |
10798 | ||
d721ba37 PA |
10799 | if (res.name == NULL) |
10800 | res.name = "<unknown>"; | |
10801 | ||
10802 | return res; | |
9291a0cd TT |
10803 | } |
10804 | ||
f4dc4d17 DE |
10805 | /* Handle DW_AT_stmt_list for a compilation unit. |
10806 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
10807 | COMP_DIR is the compilation directory. LOWPC is passed to |
10808 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
10809 | |
10810 | static void | |
10811 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 10812 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 10813 | { |
5e22e966 | 10814 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
2ab95328 | 10815 | struct attribute *attr; |
527f3840 JK |
10816 | struct line_header line_header_local; |
10817 | hashval_t line_header_local_hash; | |
527f3840 JK |
10818 | void **slot; |
10819 | int decode_mapping; | |
2ab95328 | 10820 | |
f4dc4d17 DE |
10821 | gdb_assert (! cu->per_cu->is_debug_types); |
10822 | ||
2ab95328 | 10823 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
10824 | if (attr == NULL) |
10825 | return; | |
10826 | ||
9c541725 | 10827 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
10828 | |
10829 | /* The line header hash table is only created if needed (it exists to | |
10830 | prevent redundant reading of the line table for partial_units). | |
10831 | If we're given a partial_unit, we'll need it. If we're given a | |
10832 | compile_unit, then use the line header hash table if it's already | |
10833 | created, but don't create one just yet. */ | |
10834 | ||
5989a64e | 10835 | if (dwarf2_per_objfile->per_bfd->line_header_hash == NULL |
527f3840 | 10836 | && die->tag == DW_TAG_partial_unit) |
2ab95328 | 10837 | { |
5989a64e | 10838 | dwarf2_per_objfile->per_bfd->line_header_hash |
d15acc42 TT |
10839 | .reset (htab_create_alloc (127, line_header_hash_voidp, |
10840 | line_header_eq_voidp, | |
10841 | free_line_header_voidp, | |
10842 | xcalloc, xfree)); | |
527f3840 | 10843 | } |
2ab95328 | 10844 | |
9c541725 | 10845 | line_header_local.sect_off = line_offset; |
527f3840 JK |
10846 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
10847 | line_header_local_hash = line_header_hash (&line_header_local); | |
5989a64e | 10848 | if (dwarf2_per_objfile->per_bfd->line_header_hash != NULL) |
527f3840 | 10849 | { |
5989a64e | 10850 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->per_bfd->line_header_hash.get (), |
527f3840 JK |
10851 | &line_header_local, |
10852 | line_header_local_hash, NO_INSERT); | |
10853 | ||
10854 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
10855 | is not present in *SLOT (since if there is something in *SLOT then | |
10856 | it will be for a partial_unit). */ | |
10857 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 10858 | { |
527f3840 | 10859 | gdb_assert (*slot != NULL); |
9a3c8263 | 10860 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 10861 | return; |
dee91e82 | 10862 | } |
2ab95328 | 10863 | } |
527f3840 JK |
10864 | |
10865 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
10866 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
10867 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
10868 | if (lh == NULL) | |
527f3840 | 10869 | return; |
4c8aa72d PA |
10870 | |
10871 | cu->line_header = lh.release (); | |
10872 | cu->line_header_die_owner = die; | |
527f3840 | 10873 | |
5989a64e | 10874 | if (dwarf2_per_objfile->per_bfd->line_header_hash == NULL) |
527f3840 JK |
10875 | slot = NULL; |
10876 | else | |
10877 | { | |
5989a64e | 10878 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->per_bfd->line_header_hash.get (), |
527f3840 JK |
10879 | &line_header_local, |
10880 | line_header_local_hash, INSERT); | |
10881 | gdb_assert (slot != NULL); | |
10882 | } | |
10883 | if (slot != NULL && *slot == NULL) | |
10884 | { | |
10885 | /* This newly decoded line number information unit will be owned | |
10886 | by line_header_hash hash table. */ | |
10887 | *slot = cu->line_header; | |
4c8aa72d | 10888 | cu->line_header_die_owner = NULL; |
527f3840 JK |
10889 | } |
10890 | else | |
10891 | { | |
10892 | /* We cannot free any current entry in (*slot) as that struct line_header | |
10893 | may be already used by multiple CUs. Create only temporary decoded | |
10894 | line_header for this CU - it may happen at most once for each line | |
10895 | number information unit. And if we're not using line_header_hash | |
10896 | then this is what we want as well. */ | |
10897 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
10898 | } |
10899 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
10900 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
10901 | decode_mapping); | |
fff8551c | 10902 | |
2ab95328 TT |
10903 | } |
10904 | ||
95554aad | 10905 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 10906 | |
c906108c | 10907 | static void |
e7c27a73 | 10908 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10909 | { |
5e22e966 | 10910 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
dee91e82 | 10911 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 10912 | struct gdbarch *gdbarch = objfile->arch (); |
2acceee2 | 10913 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
10914 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
10915 | struct attribute *attr; | |
c906108c | 10916 | struct die_info *child_die; |
e142c38c | 10917 | CORE_ADDR baseaddr; |
6e70227d | 10918 | |
380618d6 | 10919 | prepare_one_comp_unit (cu, die, cu->language); |
b3b3bada | 10920 | baseaddr = objfile->text_section_offset (); |
c906108c | 10921 | |
fae299cd | 10922 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
10923 | |
10924 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
10925 | from finish_block. */ | |
2acceee2 | 10926 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 10927 | lowpc = highpc; |
3e29f34a | 10928 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 10929 | |
d721ba37 | 10930 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 10931 | |
f4b8a18d KW |
10932 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
10933 | standardised yet. As a workaround for the language detection we fall | |
10934 | back to the DW_AT_producer string. */ | |
10935 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
10936 | cu->language = language_opencl; | |
10937 | ||
3019eac3 DE |
10938 | /* Similar hack for Go. */ |
10939 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
10940 | set_cu_language (DW_LANG_Go, cu); | |
10941 | ||
c24bdb02 | 10942 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
10943 | |
10944 | /* Decode line number information if present. We do this before | |
10945 | processing child DIEs, so that the line header table is available | |
10946 | for DW_AT_decl_file. */ | |
d721ba37 | 10947 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
10948 | |
10949 | /* Process all dies in compilation unit. */ | |
10950 | if (die->child != NULL) | |
10951 | { | |
10952 | child_die = die->child; | |
10953 | while (child_die && child_die->tag) | |
10954 | { | |
10955 | process_die (child_die, cu); | |
436c571c | 10956 | child_die = child_die->sibling; |
3019eac3 DE |
10957 | } |
10958 | } | |
10959 | ||
10960 | /* Decode macro information, if present. Dwarf 2 macro information | |
10961 | refers to information in the line number info statement program | |
10962 | header, so we can only read it if we've read the header | |
10963 | successfully. */ | |
0af92d60 JK |
10964 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
10965 | if (attr == NULL) | |
10966 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
10967 | if (attr && cu->line_header) |
10968 | { | |
10969 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 10970 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 10971 | |
43f3e411 | 10972 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
10973 | } |
10974 | else | |
10975 | { | |
10976 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
10977 | if (attr && cu->line_header) | |
10978 | { | |
10979 | unsigned int macro_offset = DW_UNSND (attr); | |
10980 | ||
43f3e411 | 10981 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
10982 | } |
10983 | } | |
3019eac3 DE |
10984 | } |
10985 | ||
c24bdb02 KS |
10986 | void |
10987 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 10988 | { |
f4dc4d17 DE |
10989 | struct type_unit_group *tu_group; |
10990 | int first_time; | |
3019eac3 | 10991 | struct attribute *attr; |
9c541725 | 10992 | unsigned int i; |
0186c6a7 | 10993 | struct signatured_type *sig_type; |
3019eac3 | 10994 | |
f4dc4d17 | 10995 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 10996 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 10997 | |
c24bdb02 | 10998 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 10999 | |
f4dc4d17 | 11000 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11001 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 11002 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 11003 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 11004 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
11005 | |
11006 | /* If we've already processed this stmt_list there's no real need to | |
11007 | do it again, we could fake it and just recreate the part we need | |
11008 | (file name,index -> symtab mapping). If data shows this optimization | |
11009 | is useful we can do it then. */ | |
43f3e411 | 11010 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
11011 | |
11012 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11013 | debug info. */ | |
fff8551c | 11014 | line_header_up lh; |
f4dc4d17 | 11015 | if (attr != NULL) |
3019eac3 | 11016 | { |
9c541725 | 11017 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
c24bdb02 | 11018 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
11019 | } |
11020 | if (lh == NULL) | |
11021 | { | |
11022 | if (first_time) | |
c24bdb02 | 11023 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
11024 | else |
11025 | { | |
11026 | gdb_assert (tu_group->symtabs == NULL); | |
c24bdb02 | 11027 | gdb_assert (m_builder == nullptr); |
804d2729 | 11028 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
11029 | m_builder.reset (new struct buildsym_compunit |
11030 | (COMPUNIT_OBJFILE (cust), "", | |
11031 | COMPUNIT_DIRNAME (cust), | |
11032 | compunit_language (cust), | |
11033 | 0, cust)); | |
770479f2 | 11034 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11035 | } |
f4dc4d17 | 11036 | return; |
3019eac3 DE |
11037 | } |
11038 | ||
c24bdb02 KS |
11039 | line_header = lh.release (); |
11040 | line_header_die_owner = die; | |
3019eac3 | 11041 | |
f4dc4d17 DE |
11042 | if (first_time) |
11043 | { | |
c24bdb02 | 11044 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 11045 | |
1fd60fc0 DE |
11046 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11047 | still initializing it, and our caller (a few levels up) | |
11048 | process_full_type_unit still needs to know if this is the first | |
11049 | time. */ | |
11050 | ||
4ac93832 TT |
11051 | tu_group->symtabs |
11052 | = XOBNEWVEC (&COMPUNIT_OBJFILE (cust)->objfile_obstack, | |
11053 | struct symtab *, line_header->file_names_size ()); | |
3019eac3 | 11054 | |
7ba99d21 AT |
11055 | auto &file_names = line_header->file_names (); |
11056 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11057 | { |
7ba99d21 | 11058 | file_entry &fe = file_names[i]; |
c24bdb02 KS |
11059 | dwarf2_start_subfile (this, fe.name, |
11060 | fe.include_dir (line_header)); | |
11061 | buildsym_compunit *b = get_builder (); | |
11062 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 11063 | { |
4c8aa72d PA |
11064 | /* NOTE: start_subfile will recognize when it's been |
11065 | passed a file it has already seen. So we can't | |
11066 | assume there's a simple mapping from | |
11067 | cu->line_header->file_names to subfiles, plus | |
11068 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
11069 | b->get_current_subfile ()->symtab |
11070 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
11071 | } |
11072 | ||
c24bdb02 | 11073 | fe.symtab = b->get_current_subfile ()->symtab; |
8c43009f | 11074 | tu_group->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11075 | } |
11076 | } | |
11077 | else | |
3019eac3 | 11078 | { |
c24bdb02 | 11079 | gdb_assert (m_builder == nullptr); |
804d2729 | 11080 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
11081 | m_builder.reset (new struct buildsym_compunit |
11082 | (COMPUNIT_OBJFILE (cust), "", | |
11083 | COMPUNIT_DIRNAME (cust), | |
11084 | compunit_language (cust), | |
11085 | 0, cust)); | |
770479f2 | 11086 | list_in_scope = get_builder ()->get_file_symbols (); |
f4dc4d17 | 11087 | |
7ba99d21 AT |
11088 | auto &file_names = line_header->file_names (); |
11089 | for (i = 0; i < file_names.size (); ++i) | |
f4dc4d17 | 11090 | { |
7ba99d21 | 11091 | file_entry &fe = file_names[i]; |
4c8aa72d | 11092 | fe.symtab = tu_group->symtabs[i]; |
f4dc4d17 | 11093 | } |
3019eac3 DE |
11094 | } |
11095 | ||
f4dc4d17 DE |
11096 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11097 | so they don't have a "real" (so to speak) symtab anyway. | |
11098 | There is later code that will assign the main symtab to all symbols | |
11099 | that don't have one. We need to handle the case of a symbol with a | |
11100 | missing symtab (DW_AT_decl_file) anyway. */ | |
11101 | } | |
3019eac3 | 11102 | |
f4dc4d17 DE |
11103 | /* Process DW_TAG_type_unit. |
11104 | For TUs we want to skip the first top level sibling if it's not the | |
11105 | actual type being defined by this TU. In this case the first top | |
11106 | level sibling is there to provide context only. */ | |
3019eac3 | 11107 | |
f4dc4d17 DE |
11108 | static void |
11109 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11110 | { | |
11111 | struct die_info *child_die; | |
3019eac3 | 11112 | |
f4dc4d17 DE |
11113 | prepare_one_comp_unit (cu, die, language_minimal); |
11114 | ||
11115 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11116 | We do this before processing child DIEs, so that the line header table | |
11117 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 11118 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
11119 | |
11120 | if (die->child != NULL) | |
11121 | { | |
11122 | child_die = die->child; | |
11123 | while (child_die && child_die->tag) | |
11124 | { | |
11125 | process_die (child_die, cu); | |
436c571c | 11126 | child_die = child_die->sibling; |
f4dc4d17 DE |
11127 | } |
11128 | } | |
3019eac3 DE |
11129 | } |
11130 | \f | |
80626a55 DE |
11131 | /* DWO/DWP files. |
11132 | ||
11133 | http://gcc.gnu.org/wiki/DebugFission | |
11134 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11135 | ||
11136 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11137 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11138 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11139 | |
11140 | static hashval_t | |
11141 | hash_dwo_file (const void *item) | |
11142 | { | |
9a3c8263 | 11143 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11144 | hashval_t hash; |
3019eac3 | 11145 | |
a2ce51a0 DE |
11146 | hash = htab_hash_string (dwo_file->dwo_name); |
11147 | if (dwo_file->comp_dir != NULL) | |
11148 | hash += htab_hash_string (dwo_file->comp_dir); | |
11149 | return hash; | |
3019eac3 DE |
11150 | } |
11151 | ||
11152 | static int | |
11153 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11154 | { | |
9a3c8263 SM |
11155 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11156 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11157 | |
a2ce51a0 DE |
11158 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11159 | return 0; | |
11160 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11161 | return lhs->comp_dir == rhs->comp_dir; | |
11162 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11163 | } |
11164 | ||
11165 | /* Allocate a hash table for DWO files. */ | |
11166 | ||
51ac9db5 | 11167 | static htab_up |
298e9637 | 11168 | allocate_dwo_file_hash_table () |
3019eac3 | 11169 | { |
51ac9db5 SM |
11170 | auto delete_dwo_file = [] (void *item) |
11171 | { | |
11172 | struct dwo_file *dwo_file = (struct dwo_file *) item; | |
11173 | ||
11174 | delete dwo_file; | |
11175 | }; | |
11176 | ||
bc68fb19 TT |
11177 | return htab_up (htab_create_alloc (41, |
11178 | hash_dwo_file, | |
11179 | eq_dwo_file, | |
11180 | delete_dwo_file, | |
11181 | xcalloc, xfree)); | |
3019eac3 DE |
11182 | } |
11183 | ||
80626a55 DE |
11184 | /* Lookup DWO file DWO_NAME. */ |
11185 | ||
11186 | static void ** | |
ed2dc618 SM |
11187 | lookup_dwo_file_slot (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11188 | const char *dwo_name, | |
11189 | const char *comp_dir) | |
80626a55 DE |
11190 | { |
11191 | struct dwo_file find_entry; | |
11192 | void **slot; | |
11193 | ||
5989a64e SM |
11194 | if (dwarf2_per_objfile->per_bfd->dwo_files == NULL) |
11195 | dwarf2_per_objfile->per_bfd->dwo_files = allocate_dwo_file_hash_table (); | |
80626a55 | 11196 | |
0ac5b59e DE |
11197 | find_entry.dwo_name = dwo_name; |
11198 | find_entry.comp_dir = comp_dir; | |
5989a64e | 11199 | slot = htab_find_slot (dwarf2_per_objfile->per_bfd->dwo_files.get (), &find_entry, |
51ac9db5 | 11200 | INSERT); |
80626a55 DE |
11201 | |
11202 | return slot; | |
11203 | } | |
11204 | ||
3019eac3 DE |
11205 | static hashval_t |
11206 | hash_dwo_unit (const void *item) | |
11207 | { | |
9a3c8263 | 11208 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11209 | |
11210 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11211 | return dwo_unit->signature; | |
11212 | } | |
11213 | ||
11214 | static int | |
11215 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11216 | { | |
9a3c8263 SM |
11217 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11218 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11219 | |
11220 | /* The signature is assumed to be unique within the DWO file. | |
11221 | So while object file CU dwo_id's always have the value zero, | |
11222 | that's OK, assuming each object file DWO file has only one CU, | |
11223 | and that's the rule for now. */ | |
11224 | return lhs->signature == rhs->signature; | |
11225 | } | |
11226 | ||
11227 | /* Allocate a hash table for DWO CUs,TUs. | |
11228 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11229 | ||
b0b6a987 | 11230 | static htab_up |
298e9637 | 11231 | allocate_dwo_unit_table () |
3019eac3 DE |
11232 | { |
11233 | /* Start out with a pretty small number. | |
11234 | Generally DWO files contain only one CU and maybe some TUs. */ | |
b0b6a987 TT |
11235 | return htab_up (htab_create_alloc (3, |
11236 | hash_dwo_unit, | |
11237 | eq_dwo_unit, | |
11238 | NULL, xcalloc, xfree)); | |
3019eac3 DE |
11239 | } |
11240 | ||
19c3d4c9 | 11241 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11242 | |
11243 | static void | |
19c3d4c9 DE |
11244 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11245 | const gdb_byte *info_ptr, | |
11246 | struct die_info *comp_unit_die, | |
c0ab21c2 TT |
11247 | struct dwo_file *dwo_file, |
11248 | struct dwo_unit *dwo_unit) | |
3019eac3 DE |
11249 | { |
11250 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11251 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11252 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 | 11253 | |
a084a2a6 AT |
11254 | gdb::optional<ULONGEST> signature = lookup_dwo_id (cu, comp_unit_die); |
11255 | if (!signature.has_value ()) | |
3019eac3 | 11256 | { |
b98664d3 | 11257 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11258 | " its dwo_id [in module %s]"), |
9d8780f0 | 11259 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11260 | return; |
11261 | } | |
11262 | ||
3019eac3 | 11263 | dwo_unit->dwo_file = dwo_file; |
a084a2a6 | 11264 | dwo_unit->signature = *signature; |
8a0459fd | 11265 | dwo_unit->section = section; |
9c541725 | 11266 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11267 | dwo_unit->length = cu->per_cu->length; |
11268 | ||
b4f54984 | 11269 | if (dwarf_read_debug) |
9d8780f0 SM |
11270 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11271 | sect_offset_str (sect_off), | |
9c541725 | 11272 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11273 | } |
11274 | ||
33c5cd75 | 11275 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11276 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11277 | |
33c5cd75 | 11278 | static void |
ed2dc618 | 11279 | create_cus_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e | 11280 | dwarf2_cu *cu, struct dwo_file &dwo_file, |
b0b6a987 | 11281 | dwarf2_section_info §ion, htab_up &cus_htab) |
3019eac3 DE |
11282 | { |
11283 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
1859c670 | 11284 | dwarf2_per_bfd *per_bfd = dwarf2_per_objfile->per_bfd; |
d521ce57 | 11285 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11286 | |
96b79293 | 11287 | section.read (objfile); |
33c5cd75 | 11288 | info_ptr = section.buffer; |
3019eac3 DE |
11289 | |
11290 | if (info_ptr == NULL) | |
33c5cd75 | 11291 | return; |
3019eac3 | 11292 | |
b4f54984 | 11293 | if (dwarf_read_debug) |
19c3d4c9 DE |
11294 | { |
11295 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
96b79293 TT |
11296 | section.get_name (), |
11297 | section.get_file_name ()); | |
19c3d4c9 | 11298 | } |
3019eac3 | 11299 | |
33c5cd75 | 11300 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11301 | while (info_ptr < end_ptr) |
11302 | { | |
11303 | struct dwarf2_per_cu_data per_cu; | |
c0ab21c2 | 11304 | struct dwo_unit read_unit {}; |
33c5cd75 DB |
11305 | struct dwo_unit *dwo_unit; |
11306 | void **slot; | |
11307 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 DE |
11308 | |
11309 | memset (&per_cu, 0, sizeof (per_cu)); | |
e3b94546 | 11310 | per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
1859c670 | 11311 | per_cu.per_bfd = per_bfd; |
3019eac3 | 11312 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11313 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11314 | per_cu.section = §ion; | |
11315 | ||
c0ab21c2 TT |
11316 | cutu_reader reader (&per_cu, cu, &dwo_file); |
11317 | if (!reader.dummy_p) | |
11318 | create_dwo_cu_reader (&reader, reader.info_ptr, reader.comp_unit_die, | |
3e225074 | 11319 | &dwo_file, &read_unit); |
33c5cd75 DB |
11320 | info_ptr += per_cu.length; |
11321 | ||
11322 | // If the unit could not be parsed, skip it. | |
c0ab21c2 | 11323 | if (read_unit.dwo_file == NULL) |
33c5cd75 | 11324 | continue; |
3019eac3 | 11325 | |
33c5cd75 | 11326 | if (cus_htab == NULL) |
298e9637 | 11327 | cus_htab = allocate_dwo_unit_table (); |
19c3d4c9 | 11328 | |
1859c670 | 11329 | dwo_unit = OBSTACK_ZALLOC (&per_bfd->obstack, |
45940949 | 11330 | struct dwo_unit); |
c0ab21c2 | 11331 | *dwo_unit = read_unit; |
b0b6a987 | 11332 | slot = htab_find_slot (cus_htab.get (), dwo_unit, INSERT); |
33c5cd75 DB |
11333 | gdb_assert (slot != NULL); |
11334 | if (*slot != NULL) | |
19c3d4c9 | 11335 | { |
33c5cd75 DB |
11336 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11337 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11338 | |
b98664d3 | 11339 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11340 | " the entry at offset %s, signature %s"), |
11341 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11342 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11343 | } |
33c5cd75 | 11344 | *slot = (void *)dwo_unit; |
3019eac3 | 11345 | } |
3019eac3 DE |
11346 | } |
11347 | ||
80626a55 DE |
11348 | /* DWP file .debug_{cu,tu}_index section format: |
11349 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
11350 | ||
d2415c6c DE |
11351 | DWP Version 1: |
11352 | ||
80626a55 DE |
11353 | Both index sections have the same format, and serve to map a 64-bit |
11354 | signature to a set of section numbers. Each section begins with a header, | |
11355 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11356 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11357 | aligned at 8-byte boundaries in the file. | |
11358 | ||
d2415c6c DE |
11359 | The index section header consists of: |
11360 | ||
11361 | V, 32 bit version number | |
11362 | -, 32 bits unused | |
11363 | N, 32 bit number of compilation units or type units in the index | |
11364 | M, 32 bit number of slots in the hash table | |
80626a55 | 11365 | |
d2415c6c | 11366 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11367 | |
d2415c6c DE |
11368 | The hash table begins at offset 16 in the section, and consists of an array |
11369 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11370 | order of the application binary). Unused slots in the hash table are 0. | |
11371 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11372 | |
d2415c6c DE |
11373 | The parallel table begins immediately after the hash table |
11374 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11375 | array of 32-bit indexes (using the byte order of the application binary), | |
11376 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11377 | table contains a 32-bit index into the pool of section numbers. For unused | |
11378 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11379 | |
73869dc2 DE |
11380 | The pool of section numbers begins immediately following the hash table |
11381 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11382 | section numbers consists of an array of 32-bit words (using the byte order | |
11383 | of the application binary). Each item in the array is indexed starting | |
11384 | from 0. The hash table entry provides the index of the first section | |
11385 | number in the set. Additional section numbers in the set follow, and the | |
11386 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11387 | ||
11388 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11389 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11390 | be the second entry. Other members of the set may follow in any order. | |
11391 | ||
11392 | --- | |
11393 | ||
11394 | DWP Version 2: | |
11395 | ||
11396 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
11397 | and the entries in the index tables are now offsets into these sections. | |
11398 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11399 | section. | |
11400 | ||
11401 | Index Section Contents: | |
11402 | Header | |
11403 | Hash Table of Signatures dwp_hash_table.hash_table | |
11404 | Parallel Table of Indices dwp_hash_table.unit_table | |
11405 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
11406 | Table of Section Sizes dwp_hash_table.v2.sizes | |
11407 | ||
11408 | The index section header consists of: | |
11409 | ||
11410 | V, 32 bit version number | |
11411 | L, 32 bit number of columns in the table of section offsets | |
11412 | N, 32 bit number of compilation units or type units in the index | |
11413 | M, 32 bit number of slots in the hash table | |
11414 | ||
11415 | Numbers are recorded using the byte order of the application binary. | |
11416 | ||
11417 | The hash table has the same format as version 1. | |
11418 | The parallel table of indices has the same format as version 1, | |
11419 | except that the entries are origin-1 indices into the table of sections | |
11420 | offsets and the table of section sizes. | |
11421 | ||
11422 | The table of offsets begins immediately following the parallel table | |
11423 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11424 | a two-dimensional array of 32-bit words (using the byte order of the | |
11425 | application binary), with L columns and N+1 rows, in row-major order. | |
11426 | Each row in the array is indexed starting from 0. The first row provides | |
11427 | a key to the remaining rows: each column in this row provides an identifier | |
11428 | for a debug section, and the offsets in the same column of subsequent rows | |
11429 | refer to that section. The section identifiers are: | |
11430 | ||
11431 | DW_SECT_INFO 1 .debug_info.dwo | |
11432 | DW_SECT_TYPES 2 .debug_types.dwo | |
11433 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11434 | DW_SECT_LINE 4 .debug_line.dwo | |
11435 | DW_SECT_LOC 5 .debug_loc.dwo | |
11436 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11437 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11438 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11439 | ||
11440 | The offsets provided by the CU and TU index sections are the base offsets | |
11441 | for the contributions made by each CU or TU to the corresponding section | |
11442 | in the package file. Each CU and TU header contains an abbrev_offset | |
11443 | field, used to find the abbreviations table for that CU or TU within the | |
11444 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11445 | be interpreted as relative to the base offset given in the index section. | |
11446 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11447 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11448 | and offsets into other debug sections obtained from DWARF attributes should | |
11449 | also be interpreted as relative to the corresponding base offset. | |
11450 | ||
11451 | The table of sizes begins immediately following the table of offsets. | |
11452 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11453 | with L columns and N rows, in row-major order. Each row in the array is | |
11454 | indexed starting from 1 (row 0 is shared by the two tables). | |
11455 | ||
11456 | --- | |
11457 | ||
11458 | Hash table lookup is handled the same in version 1 and 2: | |
11459 | ||
11460 | We assume that N and M will not exceed 2^32 - 1. | |
11461 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11462 | ||
d2415c6c DE |
11463 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11464 | in the hash table is located as follows: | |
80626a55 | 11465 | |
d2415c6c DE |
11466 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11467 | the low-order k bits all set to 1. | |
80626a55 | 11468 | |
d2415c6c | 11469 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11470 | |
d2415c6c DE |
11471 | 3) If the hash table entry at index H matches the signature, use that |
11472 | entry. If the hash table entry at index H is unused (all zeroes), | |
11473 | terminate the search: the signature is not present in the table. | |
80626a55 | 11474 | |
d2415c6c | 11475 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11476 | |
d2415c6c | 11477 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11478 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11479 | |
11480 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11481 | .debug_{info,types}.dwo in DWP_FILE. | |
11482 | Returns NULL if there isn't one. | |
11483 | Note: This function processes DWP files only, not DWO files. */ | |
11484 | ||
11485 | static struct dwp_hash_table * | |
ed2dc618 SM |
11486 | create_dwp_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11487 | struct dwp_file *dwp_file, int is_debug_types) | |
80626a55 DE |
11488 | { |
11489 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
400174b1 | 11490 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 11491 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 11492 | struct dwarf2_section_info *index; |
73869dc2 | 11493 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
11494 | struct dwp_hash_table *htab; |
11495 | ||
11496 | if (is_debug_types) | |
11497 | index = &dwp_file->sections.tu_index; | |
11498 | else | |
11499 | index = &dwp_file->sections.cu_index; | |
11500 | ||
96b79293 | 11501 | if (index->empty ()) |
80626a55 | 11502 | return NULL; |
96b79293 | 11503 | index->read (objfile); |
80626a55 DE |
11504 | |
11505 | index_ptr = index->buffer; | |
11506 | index_end = index_ptr + index->size; | |
11507 | ||
11508 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
11509 | index_ptr += 4; |
11510 | if (version == 2) | |
11511 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
11512 | else | |
11513 | nr_columns = 0; | |
11514 | index_ptr += 4; | |
80626a55 DE |
11515 | nr_units = read_4_bytes (dbfd, index_ptr); |
11516 | index_ptr += 4; | |
11517 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
11518 | index_ptr += 4; | |
11519 | ||
73869dc2 | 11520 | if (version != 1 && version != 2) |
80626a55 | 11521 | { |
21aa081e | 11522 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 11523 | " [in module %s]"), |
21aa081e | 11524 | pulongest (version), dwp_file->name); |
80626a55 DE |
11525 | } |
11526 | if (nr_slots != (nr_slots & -nr_slots)) | |
11527 | { | |
21aa081e | 11528 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 11529 | " is not power of 2 [in module %s]"), |
21aa081e | 11530 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
11531 | } |
11532 | ||
5989a64e | 11533 | htab = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, struct dwp_hash_table); |
73869dc2 DE |
11534 | htab->version = version; |
11535 | htab->nr_columns = nr_columns; | |
80626a55 DE |
11536 | htab->nr_units = nr_units; |
11537 | htab->nr_slots = nr_slots; | |
11538 | htab->hash_table = index_ptr; | |
11539 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
11540 | |
11541 | /* Exit early if the table is empty. */ | |
11542 | if (nr_slots == 0 || nr_units == 0 | |
11543 | || (version == 2 && nr_columns == 0)) | |
11544 | { | |
11545 | /* All must be zero. */ | |
11546 | if (nr_slots != 0 || nr_units != 0 | |
11547 | || (version == 2 && nr_columns != 0)) | |
11548 | { | |
b98664d3 | 11549 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
11550 | " all zero [in modules %s]"), |
11551 | dwp_file->name); | |
11552 | } | |
11553 | return htab; | |
11554 | } | |
11555 | ||
11556 | if (version == 1) | |
11557 | { | |
11558 | htab->section_pool.v1.indices = | |
11559 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11560 | /* It's harder to decide whether the section is too small in v1. | |
11561 | V1 is deprecated anyway so we punt. */ | |
11562 | } | |
11563 | else | |
11564 | { | |
11565 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
11566 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 11567 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
11568 | /* Reverse map for error checking. */ |
11569 | int ids_seen[DW_SECT_MAX + 1]; | |
11570 | int i; | |
11571 | ||
11572 | if (nr_columns < 2) | |
11573 | { | |
11574 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
11575 | " in section table [in module %s]"), | |
11576 | dwp_file->name); | |
11577 | } | |
11578 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
11579 | { | |
11580 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
11581 | " in section table [in module %s]"), | |
11582 | dwp_file->name); | |
11583 | } | |
04fd5eed GB |
11584 | memset (ids, 255, sizeof_ids); |
11585 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
11586 | for (i = 0; i < nr_columns; ++i) |
11587 | { | |
11588 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
11589 | ||
11590 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
11591 | { | |
11592 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
11593 | " in section table [in module %s]"), | |
11594 | id, dwp_file->name); | |
11595 | } | |
11596 | if (ids_seen[id] != -1) | |
11597 | { | |
11598 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
11599 | " id %d in section table [in module %s]"), | |
11600 | id, dwp_file->name); | |
11601 | } | |
11602 | ids_seen[id] = i; | |
11603 | ids[i] = id; | |
11604 | } | |
11605 | /* Must have exactly one info or types section. */ | |
11606 | if (((ids_seen[DW_SECT_INFO] != -1) | |
11607 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
11608 | != 1) | |
11609 | { | |
11610 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
11611 | " DWO info/types section [in module %s]"), | |
11612 | dwp_file->name); | |
11613 | } | |
11614 | /* Must have an abbrev section. */ | |
11615 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
11616 | { | |
11617 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
11618 | " section [in module %s]"), | |
11619 | dwp_file->name); | |
11620 | } | |
11621 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
11622 | htab->section_pool.v2.sizes = | |
11623 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
11624 | * nr_units * nr_columns); | |
11625 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
11626 | * nr_units * nr_columns)) | |
11627 | > index_end) | |
11628 | { | |
11629 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
11630 | " [in module %s]"), | |
11631 | dwp_file->name); | |
11632 | } | |
11633 | } | |
80626a55 DE |
11634 | |
11635 | return htab; | |
11636 | } | |
11637 | ||
11638 | /* Update SECTIONS with the data from SECTP. | |
11639 | ||
11640 | This function is like the other "locate" section routines that are | |
11641 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 11642 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
11643 | |
11644 | The result is non-zero for success, or zero if an error was found. */ | |
11645 | ||
11646 | static int | |
73869dc2 DE |
11647 | locate_v1_virtual_dwo_sections (asection *sectp, |
11648 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
11649 | { |
11650 | const struct dwop_section_names *names = &dwop_section_names; | |
11651 | ||
11652 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
11653 | { | |
11654 | /* There can be only one. */ | |
049412e3 | 11655 | if (sections->abbrev.s.section != NULL) |
80626a55 | 11656 | return 0; |
049412e3 | 11657 | sections->abbrev.s.section = sectp; |
fd361982 | 11658 | sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
11659 | } |
11660 | else if (section_is_p (sectp->name, &names->info_dwo) | |
11661 | || section_is_p (sectp->name, &names->types_dwo)) | |
11662 | { | |
11663 | /* There can be only one. */ | |
049412e3 | 11664 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 11665 | return 0; |
049412e3 | 11666 | sections->info_or_types.s.section = sectp; |
fd361982 | 11667 | sections->info_or_types.size = bfd_section_size (sectp); |
80626a55 DE |
11668 | } |
11669 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
11670 | { | |
11671 | /* There can be only one. */ | |
049412e3 | 11672 | if (sections->line.s.section != NULL) |
80626a55 | 11673 | return 0; |
049412e3 | 11674 | sections->line.s.section = sectp; |
fd361982 | 11675 | sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
11676 | } |
11677 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
11678 | { | |
11679 | /* There can be only one. */ | |
049412e3 | 11680 | if (sections->loc.s.section != NULL) |
80626a55 | 11681 | return 0; |
049412e3 | 11682 | sections->loc.s.section = sectp; |
fd361982 | 11683 | sections->loc.size = bfd_section_size (sectp); |
80626a55 DE |
11684 | } |
11685 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
11686 | { | |
11687 | /* There can be only one. */ | |
049412e3 | 11688 | if (sections->macinfo.s.section != NULL) |
80626a55 | 11689 | return 0; |
049412e3 | 11690 | sections->macinfo.s.section = sectp; |
fd361982 | 11691 | sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
11692 | } |
11693 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
11694 | { | |
11695 | /* There can be only one. */ | |
049412e3 | 11696 | if (sections->macro.s.section != NULL) |
80626a55 | 11697 | return 0; |
049412e3 | 11698 | sections->macro.s.section = sectp; |
fd361982 | 11699 | sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
11700 | } |
11701 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
11702 | { | |
11703 | /* There can be only one. */ | |
049412e3 | 11704 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 11705 | return 0; |
049412e3 | 11706 | sections->str_offsets.s.section = sectp; |
fd361982 | 11707 | sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
11708 | } |
11709 | else | |
11710 | { | |
11711 | /* No other kind of section is valid. */ | |
11712 | return 0; | |
11713 | } | |
11714 | ||
11715 | return 1; | |
11716 | } | |
11717 | ||
73869dc2 DE |
11718 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
11719 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11720 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11721 | This is for DWP version 1 files. */ | |
80626a55 DE |
11722 | |
11723 | static struct dwo_unit * | |
ed2dc618 SM |
11724 | create_dwo_unit_in_dwp_v1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11725 | struct dwp_file *dwp_file, | |
73869dc2 DE |
11726 | uint32_t unit_index, |
11727 | const char *comp_dir, | |
11728 | ULONGEST signature, int is_debug_types) | |
80626a55 | 11729 | { |
73869dc2 DE |
11730 | const struct dwp_hash_table *dwp_htab = |
11731 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11732 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
11733 | const char *kind = is_debug_types ? "TU" : "CU"; |
11734 | struct dwo_file *dwo_file; | |
11735 | struct dwo_unit *dwo_unit; | |
73869dc2 | 11736 | struct virtual_v1_dwo_sections sections; |
80626a55 | 11737 | void **dwo_file_slot; |
80626a55 DE |
11738 | int i; |
11739 | ||
73869dc2 DE |
11740 | gdb_assert (dwp_file->version == 1); |
11741 | ||
b4f54984 | 11742 | if (dwarf_read_debug) |
80626a55 | 11743 | { |
73869dc2 | 11744 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 11745 | kind, |
73869dc2 | 11746 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
11747 | dwp_file->name); |
11748 | } | |
11749 | ||
19ac8c2e | 11750 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
11751 | Put a limit on the number of sections we look for so that bad data |
11752 | doesn't cause us to loop forever. */ | |
11753 | ||
73869dc2 | 11754 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
11755 | (1 /* .debug_info or .debug_types */ \ |
11756 | + 1 /* .debug_abbrev */ \ | |
11757 | + 1 /* .debug_line */ \ | |
11758 | + 1 /* .debug_loc */ \ | |
11759 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 11760 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
11761 | + 1 /* trailing zero */) |
11762 | ||
11763 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 11764 | |
73869dc2 | 11765 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
11766 | { |
11767 | asection *sectp; | |
11768 | uint32_t section_nr = | |
11769 | read_4_bytes (dbfd, | |
73869dc2 DE |
11770 | dwp_htab->section_pool.v1.indices |
11771 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
11772 | |
11773 | if (section_nr == 0) | |
11774 | break; | |
11775 | if (section_nr >= dwp_file->num_sections) | |
11776 | { | |
11777 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
11778 | " [in module %s]"), | |
11779 | dwp_file->name); | |
11780 | } | |
11781 | ||
11782 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 11783 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
11784 | { |
11785 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
11786 | " [in module %s]"), | |
11787 | dwp_file->name); | |
11788 | } | |
11789 | } | |
11790 | ||
11791 | if (i < 2 | |
96b79293 TT |
11792 | || sections.info_or_types.empty () |
11793 | || sections.abbrev.empty ()) | |
80626a55 DE |
11794 | { |
11795 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
11796 | " [in module %s]"), | |
11797 | dwp_file->name); | |
11798 | } | |
73869dc2 | 11799 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
11800 | { |
11801 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
11802 | " [in module %s]"), | |
11803 | dwp_file->name); | |
11804 | } | |
11805 | ||
11806 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
11807 | have dwo_unit "live" in that. At least for now. | |
11808 | ||
11809 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 11810 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
11811 | file, we can combine them back into a virtual DWO file to save space |
11812 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
11813 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
11814 | ||
791afaa2 TT |
11815 | std::string virtual_dwo_name = |
11816 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
96b79293 TT |
11817 | sections.abbrev.get_id (), |
11818 | sections.line.get_id (), | |
11819 | sections.loc.get_id (), | |
11820 | sections.str_offsets.get_id ()); | |
80626a55 | 11821 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
11822 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
11823 | virtual_dwo_name.c_str (), | |
11824 | comp_dir); | |
80626a55 DE |
11825 | /* Create one if necessary. */ |
11826 | if (*dwo_file_slot == NULL) | |
11827 | { | |
b4f54984 | 11828 | if (dwarf_read_debug) |
80626a55 DE |
11829 | { |
11830 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 11831 | virtual_dwo_name.c_str ()); |
80626a55 | 11832 | } |
51ac9db5 | 11833 | dwo_file = new struct dwo_file; |
45940949 | 11834 | dwo_file->dwo_name = dwarf2_per_objfile->objfile->intern (virtual_dwo_name); |
0ac5b59e | 11835 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
11836 | dwo_file->sections.abbrev = sections.abbrev; |
11837 | dwo_file->sections.line = sections.line; | |
11838 | dwo_file->sections.loc = sections.loc; | |
11839 | dwo_file->sections.macinfo = sections.macinfo; | |
11840 | dwo_file->sections.macro = sections.macro; | |
11841 | dwo_file->sections.str_offsets = sections.str_offsets; | |
11842 | /* The "str" section is global to the entire DWP file. */ | |
11843 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 11844 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
11845 | there's no need to record it in dwo_file. |
11846 | Also, we can't simply record type sections in dwo_file because | |
11847 | we record a pointer into the vector in dwo_unit. As we collect more | |
11848 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
11849 | for it, invalidating all copies of pointers into the previous |
11850 | contents. */ | |
80626a55 DE |
11851 | *dwo_file_slot = dwo_file; |
11852 | } | |
11853 | else | |
11854 | { | |
b4f54984 | 11855 | if (dwarf_read_debug) |
80626a55 DE |
11856 | { |
11857 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 11858 | virtual_dwo_name.c_str ()); |
80626a55 | 11859 | } |
9a3c8263 | 11860 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 11861 | } |
80626a55 | 11862 | |
5989a64e | 11863 | dwo_unit = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, struct dwo_unit); |
80626a55 DE |
11864 | dwo_unit->dwo_file = dwo_file; |
11865 | dwo_unit->signature = signature; | |
8d749320 | 11866 | dwo_unit->section = |
5989a64e | 11867 | XOBNEW (&dwarf2_per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
8a0459fd | 11868 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 11869 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
11870 | |
11871 | return dwo_unit; | |
11872 | } | |
11873 | ||
73869dc2 DE |
11874 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
11875 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
11876 | piece within that section used by a TU/CU, return a virtual section | |
11877 | of just that piece. */ | |
11878 | ||
11879 | static struct dwarf2_section_info | |
ed2dc618 SM |
11880 | create_dwp_v2_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11881 | struct dwarf2_section_info *section, | |
73869dc2 DE |
11882 | bfd_size_type offset, bfd_size_type size) |
11883 | { | |
11884 | struct dwarf2_section_info result; | |
11885 | asection *sectp; | |
11886 | ||
11887 | gdb_assert (section != NULL); | |
11888 | gdb_assert (!section->is_virtual); | |
11889 | ||
11890 | memset (&result, 0, sizeof (result)); | |
11891 | result.s.containing_section = section; | |
dc4ccb6f | 11892 | result.is_virtual = true; |
73869dc2 DE |
11893 | |
11894 | if (size == 0) | |
11895 | return result; | |
11896 | ||
96b79293 | 11897 | sectp = section->get_bfd_section (); |
73869dc2 DE |
11898 | |
11899 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
11900 | bounds of the real section. This is a pretty-rare event, so just | |
11901 | flag an error (easier) instead of a warning and trying to cope. */ | |
11902 | if (sectp == NULL | |
fd361982 | 11903 | || offset + size > bfd_section_size (sectp)) |
73869dc2 | 11904 | { |
73869dc2 DE |
11905 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
11906 | " in section %s [in module %s]"), | |
fd361982 | 11907 | sectp ? bfd_section_name (sectp) : "<unknown>", |
73869dc2 DE |
11908 | objfile_name (dwarf2_per_objfile->objfile)); |
11909 | } | |
11910 | ||
11911 | result.virtual_offset = offset; | |
11912 | result.size = size; | |
11913 | return result; | |
11914 | } | |
11915 | ||
11916 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
11917 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
11918 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
11919 | This is for DWP version 2 files. */ | |
11920 | ||
11921 | static struct dwo_unit * | |
ed2dc618 SM |
11922 | create_dwo_unit_in_dwp_v2 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11923 | struct dwp_file *dwp_file, | |
73869dc2 DE |
11924 | uint32_t unit_index, |
11925 | const char *comp_dir, | |
11926 | ULONGEST signature, int is_debug_types) | |
11927 | { | |
73869dc2 DE |
11928 | const struct dwp_hash_table *dwp_htab = |
11929 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 11930 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
11931 | const char *kind = is_debug_types ? "TU" : "CU"; |
11932 | struct dwo_file *dwo_file; | |
11933 | struct dwo_unit *dwo_unit; | |
11934 | struct virtual_v2_dwo_sections sections; | |
11935 | void **dwo_file_slot; | |
73869dc2 DE |
11936 | int i; |
11937 | ||
11938 | gdb_assert (dwp_file->version == 2); | |
11939 | ||
b4f54984 | 11940 | if (dwarf_read_debug) |
73869dc2 DE |
11941 | { |
11942 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
11943 | kind, | |
11944 | pulongest (unit_index), hex_string (signature), | |
11945 | dwp_file->name); | |
11946 | } | |
11947 | ||
11948 | /* Fetch the section offsets of this DWO unit. */ | |
11949 | ||
11950 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
11951 | |
11952 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
11953 | { | |
11954 | uint32_t offset = read_4_bytes (dbfd, | |
11955 | dwp_htab->section_pool.v2.offsets | |
11956 | + (((unit_index - 1) * dwp_htab->nr_columns | |
11957 | + i) | |
11958 | * sizeof (uint32_t))); | |
11959 | uint32_t size = read_4_bytes (dbfd, | |
11960 | dwp_htab->section_pool.v2.sizes | |
11961 | + (((unit_index - 1) * dwp_htab->nr_columns | |
11962 | + i) | |
11963 | * sizeof (uint32_t))); | |
11964 | ||
11965 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
11966 | { | |
11967 | case DW_SECT_INFO: | |
11968 | case DW_SECT_TYPES: | |
11969 | sections.info_or_types_offset = offset; | |
11970 | sections.info_or_types_size = size; | |
11971 | break; | |
11972 | case DW_SECT_ABBREV: | |
11973 | sections.abbrev_offset = offset; | |
11974 | sections.abbrev_size = size; | |
11975 | break; | |
11976 | case DW_SECT_LINE: | |
11977 | sections.line_offset = offset; | |
11978 | sections.line_size = size; | |
11979 | break; | |
11980 | case DW_SECT_LOC: | |
11981 | sections.loc_offset = offset; | |
11982 | sections.loc_size = size; | |
11983 | break; | |
11984 | case DW_SECT_STR_OFFSETS: | |
11985 | sections.str_offsets_offset = offset; | |
11986 | sections.str_offsets_size = size; | |
11987 | break; | |
11988 | case DW_SECT_MACINFO: | |
11989 | sections.macinfo_offset = offset; | |
11990 | sections.macinfo_size = size; | |
11991 | break; | |
11992 | case DW_SECT_MACRO: | |
11993 | sections.macro_offset = offset; | |
11994 | sections.macro_size = size; | |
11995 | break; | |
11996 | } | |
11997 | } | |
11998 | ||
11999 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12000 | have dwo_unit "live" in that. At least for now. | |
12001 | ||
12002 | The DWP file can be made up of a random collection of CUs and TUs. | |
12003 | However, for each CU + set of TUs that came from the same original DWO | |
12004 | file, we can combine them back into a virtual DWO file to save space | |
12005 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12006 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12007 | ||
791afaa2 TT |
12008 | std::string virtual_dwo_name = |
12009 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12010 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12011 | (long) (sections.line_size ? sections.line_offset : 0), | |
12012 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12013 | (long) (sections.str_offsets_size | |
12014 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12015 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12016 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12017 | virtual_dwo_name.c_str (), | |
12018 | comp_dir); | |
73869dc2 DE |
12019 | /* Create one if necessary. */ |
12020 | if (*dwo_file_slot == NULL) | |
12021 | { | |
b4f54984 | 12022 | if (dwarf_read_debug) |
73869dc2 DE |
12023 | { |
12024 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12025 | virtual_dwo_name.c_str ()); |
73869dc2 | 12026 | } |
51ac9db5 | 12027 | dwo_file = new struct dwo_file; |
45940949 | 12028 | dwo_file->dwo_name = dwarf2_per_objfile->objfile->intern (virtual_dwo_name); |
73869dc2 DE |
12029 | dwo_file->comp_dir = comp_dir; |
12030 | dwo_file->sections.abbrev = | |
ed2dc618 | 12031 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
12032 | sections.abbrev_offset, sections.abbrev_size); |
12033 | dwo_file->sections.line = | |
ed2dc618 | 12034 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
12035 | sections.line_offset, sections.line_size); |
12036 | dwo_file->sections.loc = | |
ed2dc618 | 12037 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
12038 | sections.loc_offset, sections.loc_size); |
12039 | dwo_file->sections.macinfo = | |
ed2dc618 | 12040 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
12041 | sections.macinfo_offset, sections.macinfo_size); |
12042 | dwo_file->sections.macro = | |
ed2dc618 | 12043 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
12044 | sections.macro_offset, sections.macro_size); |
12045 | dwo_file->sections.str_offsets = | |
ed2dc618 SM |
12046 | create_dwp_v2_section (dwarf2_per_objfile, |
12047 | &dwp_file->sections.str_offsets, | |
73869dc2 DE |
12048 | sections.str_offsets_offset, |
12049 | sections.str_offsets_size); | |
12050 | /* The "str" section is global to the entire DWP file. */ | |
12051 | dwo_file->sections.str = dwp_file->sections.str; | |
12052 | /* The info or types section is assigned below to dwo_unit, | |
12053 | there's no need to record it in dwo_file. | |
12054 | Also, we can't simply record type sections in dwo_file because | |
12055 | we record a pointer into the vector in dwo_unit. As we collect more | |
12056 | types we'll grow the vector and eventually have to reallocate space | |
12057 | for it, invalidating all copies of pointers into the previous | |
12058 | contents. */ | |
12059 | *dwo_file_slot = dwo_file; | |
12060 | } | |
12061 | else | |
12062 | { | |
b4f54984 | 12063 | if (dwarf_read_debug) |
73869dc2 DE |
12064 | { |
12065 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12066 | virtual_dwo_name.c_str ()); |
73869dc2 | 12067 | } |
9a3c8263 | 12068 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12069 | } |
73869dc2 | 12070 | |
5989a64e | 12071 | dwo_unit = OBSTACK_ZALLOC (&dwarf2_per_objfile->per_bfd->obstack, struct dwo_unit); |
73869dc2 DE |
12072 | dwo_unit->dwo_file = dwo_file; |
12073 | dwo_unit->signature = signature; | |
8d749320 | 12074 | dwo_unit->section = |
5989a64e | 12075 | XOBNEW (&dwarf2_per_objfile->per_bfd->obstack, struct dwarf2_section_info); |
ed2dc618 SM |
12076 | *dwo_unit->section = create_dwp_v2_section (dwarf2_per_objfile, |
12077 | is_debug_types | |
73869dc2 DE |
12078 | ? &dwp_file->sections.types |
12079 | : &dwp_file->sections.info, | |
12080 | sections.info_or_types_offset, | |
12081 | sections.info_or_types_size); | |
12082 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12083 | ||
12084 | return dwo_unit; | |
12085 | } | |
12086 | ||
57d63ce2 DE |
12087 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12088 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12089 | |
12090 | static struct dwo_unit * | |
ed2dc618 SM |
12091 | lookup_dwo_unit_in_dwp (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12092 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 12093 | ULONGEST signature, int is_debug_types) |
80626a55 | 12094 | { |
57d63ce2 DE |
12095 | const struct dwp_hash_table *dwp_htab = |
12096 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12097 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12098 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12099 | uint32_t hash = signature & mask; |
12100 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12101 | unsigned int i; | |
12102 | void **slot; | |
870f88f7 | 12103 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12104 | |
12105 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12106 | find_dwo_cu.signature = signature; | |
19ac8c2e | 12107 | slot = htab_find_slot (is_debug_types |
48b490f2 TT |
12108 | ? dwp_file->loaded_tus.get () |
12109 | : dwp_file->loaded_cus.get (), | |
19ac8c2e | 12110 | &find_dwo_cu, INSERT); |
80626a55 DE |
12111 | |
12112 | if (*slot != NULL) | |
9a3c8263 | 12113 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12114 | |
12115 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12116 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12117 | { |
12118 | ULONGEST signature_in_table; | |
12119 | ||
12120 | signature_in_table = | |
57d63ce2 | 12121 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12122 | if (signature_in_table == signature) |
12123 | { | |
57d63ce2 DE |
12124 | uint32_t unit_index = |
12125 | read_4_bytes (dbfd, | |
12126 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12127 | |
73869dc2 DE |
12128 | if (dwp_file->version == 1) |
12129 | { | |
ed2dc618 SM |
12130 | *slot = create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile, |
12131 | dwp_file, unit_index, | |
73869dc2 DE |
12132 | comp_dir, signature, |
12133 | is_debug_types); | |
12134 | } | |
12135 | else | |
12136 | { | |
ed2dc618 SM |
12137 | *slot = create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile, |
12138 | dwp_file, unit_index, | |
73869dc2 DE |
12139 | comp_dir, signature, |
12140 | is_debug_types); | |
12141 | } | |
9a3c8263 | 12142 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12143 | } |
12144 | if (signature_in_table == 0) | |
12145 | return NULL; | |
12146 | hash = (hash + hash2) & mask; | |
12147 | } | |
12148 | ||
12149 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12150 | " [in module %s]"), | |
12151 | dwp_file->name); | |
12152 | } | |
12153 | ||
ab5088bf | 12154 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12155 | Open the file specified by FILE_NAME and hand it off to BFD for |
12156 | preliminary analysis. Return a newly initialized bfd *, which | |
12157 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12158 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12159 | SEARCH_CWD is true if the current directory is to be searched. |
12160 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12161 | If successful, the file is added to the bfd include table of the |
12162 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12163 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12164 | NOTE: This function is derived from symfile_bfd_open. */ |
12165 | ||
192b62ce | 12166 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12167 | try_open_dwop_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12168 | const char *file_name, int is_dwp, int search_cwd) | |
3019eac3 | 12169 | { |
24b9144d | 12170 | int desc; |
9c02c129 DE |
12171 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12172 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12173 | to debug_file_directory. */ | |
e0cc99a6 | 12174 | const char *search_path; |
9c02c129 DE |
12175 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12176 | ||
e0cc99a6 | 12177 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12178 | if (search_cwd) |
12179 | { | |
12180 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12181 | { |
12182 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12183 | debug_file_directory, | |
12184 | (char *) NULL)); | |
12185 | search_path = search_path_holder.get (); | |
12186 | } | |
6ac97d4c | 12187 | else |
e0cc99a6 | 12188 | search_path = "."; |
6ac97d4c | 12189 | } |
9c02c129 | 12190 | else |
e0cc99a6 | 12191 | search_path = debug_file_directory; |
3019eac3 | 12192 | |
24b9144d | 12193 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12194 | if (is_dwp) |
12195 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12196 | |
12197 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12198 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12199 | O_RDONLY | O_BINARY, &absolute_name); |
12200 | if (desc < 0) | |
12201 | return NULL; | |
12202 | ||
e0cc99a6 TT |
12203 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12204 | gnutarget, desc)); | |
9c02c129 DE |
12205 | if (sym_bfd == NULL) |
12206 | return NULL; | |
192b62ce | 12207 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12208 | |
192b62ce TT |
12209 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12210 | return NULL; | |
3019eac3 | 12211 | |
13aaf454 DE |
12212 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12213 | This is important because things like demangled_names_hash lives in the | |
12214 | objfile's per_bfd space and may have references to things like symbol | |
12215 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 12216 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12217 | |
3019eac3 DE |
12218 | return sym_bfd; |
12219 | } | |
12220 | ||
ab5088bf | 12221 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12222 | COMP_DIR is the DW_AT_comp_dir attribute. |
12223 | The result is the bfd handle of the file. | |
12224 | If there is a problem finding or opening the file, return NULL. | |
12225 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12226 | same as symfile_bfd_open. */ | |
12227 | ||
192b62ce | 12228 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12229 | open_dwo_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12230 | const char *file_name, const char *comp_dir) | |
3019eac3 | 12231 | { |
80626a55 | 12232 | if (IS_ABSOLUTE_PATH (file_name)) |
ed2dc618 SM |
12233 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12234 | 0 /*is_dwp*/, 0 /*search_cwd*/); | |
3019eac3 DE |
12235 | |
12236 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12237 | ||
12238 | if (comp_dir != NULL) | |
12239 | { | |
43816ebc TT |
12240 | gdb::unique_xmalloc_ptr<char> path_to_try |
12241 | (concat (comp_dir, SLASH_STRING, file_name, (char *) NULL)); | |
3019eac3 DE |
12242 | |
12243 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12244 | search path, which seems useful. */ | |
ed2dc618 | 12245 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, |
43816ebc | 12246 | path_to_try.get (), |
ed2dc618 | 12247 | 0 /*is_dwp*/, |
192b62ce | 12248 | 1 /*search_cwd*/)); |
3019eac3 DE |
12249 | if (abfd != NULL) |
12250 | return abfd; | |
12251 | } | |
12252 | ||
12253 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12254 | is a list of paths. */ | |
12255 | ||
12256 | if (*debug_file_directory == '\0') | |
12257 | return NULL; | |
12258 | ||
ed2dc618 SM |
12259 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12260 | 0 /*is_dwp*/, 1 /*search_cwd*/); | |
3019eac3 DE |
12261 | } |
12262 | ||
80626a55 DE |
12263 | /* This function is mapped across the sections and remembers the offset and |
12264 | size of each of the DWO debugging sections we are interested in. */ | |
12265 | ||
12266 | static void | |
12267 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12268 | { | |
9a3c8263 | 12269 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12270 | const struct dwop_section_names *names = &dwop_section_names; |
12271 | ||
12272 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12273 | { | |
049412e3 | 12274 | dwo_sections->abbrev.s.section = sectp; |
fd361982 | 12275 | dwo_sections->abbrev.size = bfd_section_size (sectp); |
80626a55 DE |
12276 | } |
12277 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12278 | { | |
049412e3 | 12279 | dwo_sections->info.s.section = sectp; |
fd361982 | 12280 | dwo_sections->info.size = bfd_section_size (sectp); |
80626a55 DE |
12281 | } |
12282 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12283 | { | |
049412e3 | 12284 | dwo_sections->line.s.section = sectp; |
fd361982 | 12285 | dwo_sections->line.size = bfd_section_size (sectp); |
80626a55 DE |
12286 | } |
12287 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12288 | { | |
049412e3 | 12289 | dwo_sections->loc.s.section = sectp; |
fd361982 | 12290 | dwo_sections->loc.size = bfd_section_size (sectp); |
80626a55 | 12291 | } |
41144253 | 12292 | else if (section_is_p (sectp->name, &names->loclists_dwo)) |
12293 | { | |
12294 | dwo_sections->loclists.s.section = sectp; | |
12295 | dwo_sections->loclists.size = bfd_section_size (sectp); | |
12296 | } | |
80626a55 DE |
12297 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) |
12298 | { | |
049412e3 | 12299 | dwo_sections->macinfo.s.section = sectp; |
fd361982 | 12300 | dwo_sections->macinfo.size = bfd_section_size (sectp); |
80626a55 DE |
12301 | } |
12302 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12303 | { | |
049412e3 | 12304 | dwo_sections->macro.s.section = sectp; |
fd361982 | 12305 | dwo_sections->macro.size = bfd_section_size (sectp); |
80626a55 DE |
12306 | } |
12307 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
12308 | { | |
049412e3 | 12309 | dwo_sections->str.s.section = sectp; |
fd361982 | 12310 | dwo_sections->str.size = bfd_section_size (sectp); |
80626a55 DE |
12311 | } |
12312 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12313 | { | |
049412e3 | 12314 | dwo_sections->str_offsets.s.section = sectp; |
fd361982 | 12315 | dwo_sections->str_offsets.size = bfd_section_size (sectp); |
80626a55 DE |
12316 | } |
12317 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12318 | { | |
12319 | struct dwarf2_section_info type_section; | |
12320 | ||
12321 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12322 | type_section.s.section = sectp; |
fd361982 | 12323 | type_section.size = bfd_section_size (sectp); |
fd5866f6 | 12324 | dwo_sections->types.push_back (type_section); |
80626a55 DE |
12325 | } |
12326 | } | |
12327 | ||
ab5088bf | 12328 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12329 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12330 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12331 | |
12332 | static struct dwo_file * | |
0ac5b59e DE |
12333 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
12334 | const char *dwo_name, const char *comp_dir) | |
3019eac3 | 12335 | { |
ed2dc618 | 12336 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 12337 | |
fb1eb2f9 | 12338 | gdb_bfd_ref_ptr dbfd = open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir); |
80626a55 DE |
12339 | if (dbfd == NULL) |
12340 | { | |
b4f54984 | 12341 | if (dwarf_read_debug) |
80626a55 DE |
12342 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12343 | return NULL; | |
12344 | } | |
263db9a1 | 12345 | |
51ac9db5 | 12346 | dwo_file_up dwo_file (new struct dwo_file); |
0ac5b59e DE |
12347 | dwo_file->dwo_name = dwo_name; |
12348 | dwo_file->comp_dir = comp_dir; | |
fb1eb2f9 | 12349 | dwo_file->dbfd = std::move (dbfd); |
3019eac3 | 12350 | |
fb1eb2f9 | 12351 | bfd_map_over_sections (dwo_file->dbfd.get (), dwarf2_locate_dwo_sections, |
192b62ce | 12352 | &dwo_file->sections); |
3019eac3 | 12353 | |
18a8505e AT |
12354 | create_cus_hash_table (dwarf2_per_objfile, per_cu->cu, *dwo_file, |
12355 | dwo_file->sections.info, dwo_file->cus); | |
3019eac3 | 12356 | |
263db9a1 | 12357 | create_debug_types_hash_table (dwarf2_per_objfile, dwo_file.get (), |
ed2dc618 | 12358 | dwo_file->sections.types, dwo_file->tus); |
3019eac3 | 12359 | |
b4f54984 | 12360 | if (dwarf_read_debug) |
80626a55 DE |
12361 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
12362 | ||
263db9a1 | 12363 | return dwo_file.release (); |
3019eac3 DE |
12364 | } |
12365 | ||
80626a55 | 12366 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12367 | size of each of the DWP debugging sections common to version 1 and 2 that |
12368 | we are interested in. */ | |
3019eac3 | 12369 | |
80626a55 | 12370 | static void |
73869dc2 DE |
12371 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
12372 | void *dwp_file_ptr) | |
3019eac3 | 12373 | { |
9a3c8263 | 12374 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
12375 | const struct dwop_section_names *names = &dwop_section_names; |
12376 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12377 | |
80626a55 | 12378 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12379 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12380 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12381 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12382 | |
80626a55 DE |
12383 | /* Look for specific sections that we need. */ |
12384 | if (section_is_p (sectp->name, &names->str_dwo)) | |
12385 | { | |
049412e3 | 12386 | dwp_file->sections.str.s.section = sectp; |
fd361982 | 12387 | dwp_file->sections.str.size = bfd_section_size (sectp); |
80626a55 DE |
12388 | } |
12389 | else if (section_is_p (sectp->name, &names->cu_index)) | |
12390 | { | |
049412e3 | 12391 | dwp_file->sections.cu_index.s.section = sectp; |
fd361982 | 12392 | dwp_file->sections.cu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12393 | } |
12394 | else if (section_is_p (sectp->name, &names->tu_index)) | |
12395 | { | |
049412e3 | 12396 | dwp_file->sections.tu_index.s.section = sectp; |
fd361982 | 12397 | dwp_file->sections.tu_index.size = bfd_section_size (sectp); |
80626a55 DE |
12398 | } |
12399 | } | |
3019eac3 | 12400 | |
73869dc2 DE |
12401 | /* This function is mapped across the sections and remembers the offset and |
12402 | size of each of the DWP version 2 debugging sections that we are interested | |
12403 | in. This is split into a separate function because we don't know if we | |
12404 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
12405 | ||
12406 | static void | |
12407 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12408 | { | |
9a3c8263 | 12409 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12410 | const struct dwop_section_names *names = &dwop_section_names; |
12411 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12412 | ||
12413 | /* Record the ELF section number for later lookup: this is what the | |
12414 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12415 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12416 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12417 | ||
12418 | /* Look for specific sections that we need. */ | |
12419 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12420 | { | |
049412e3 | 12421 | dwp_file->sections.abbrev.s.section = sectp; |
fd361982 | 12422 | dwp_file->sections.abbrev.size = bfd_section_size (sectp); |
73869dc2 DE |
12423 | } |
12424 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12425 | { | |
049412e3 | 12426 | dwp_file->sections.info.s.section = sectp; |
fd361982 | 12427 | dwp_file->sections.info.size = bfd_section_size (sectp); |
73869dc2 DE |
12428 | } |
12429 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12430 | { | |
049412e3 | 12431 | dwp_file->sections.line.s.section = sectp; |
fd361982 | 12432 | dwp_file->sections.line.size = bfd_section_size (sectp); |
73869dc2 DE |
12433 | } |
12434 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12435 | { | |
049412e3 | 12436 | dwp_file->sections.loc.s.section = sectp; |
fd361982 | 12437 | dwp_file->sections.loc.size = bfd_section_size (sectp); |
73869dc2 DE |
12438 | } |
12439 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12440 | { | |
049412e3 | 12441 | dwp_file->sections.macinfo.s.section = sectp; |
fd361982 | 12442 | dwp_file->sections.macinfo.size = bfd_section_size (sectp); |
73869dc2 DE |
12443 | } |
12444 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12445 | { | |
049412e3 | 12446 | dwp_file->sections.macro.s.section = sectp; |
fd361982 | 12447 | dwp_file->sections.macro.size = bfd_section_size (sectp); |
73869dc2 DE |
12448 | } |
12449 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12450 | { | |
049412e3 | 12451 | dwp_file->sections.str_offsets.s.section = sectp; |
fd361982 | 12452 | dwp_file->sections.str_offsets.size = bfd_section_size (sectp); |
73869dc2 DE |
12453 | } |
12454 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12455 | { | |
049412e3 | 12456 | dwp_file->sections.types.s.section = sectp; |
fd361982 | 12457 | dwp_file->sections.types.size = bfd_section_size (sectp); |
73869dc2 DE |
12458 | } |
12459 | } | |
12460 | ||
80626a55 | 12461 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12462 | |
80626a55 DE |
12463 | static hashval_t |
12464 | hash_dwp_loaded_cutus (const void *item) | |
12465 | { | |
9a3c8263 | 12466 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 12467 | |
80626a55 DE |
12468 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
12469 | return dwo_unit->signature; | |
3019eac3 DE |
12470 | } |
12471 | ||
80626a55 | 12472 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12473 | |
80626a55 DE |
12474 | static int |
12475 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 12476 | { |
9a3c8263 SM |
12477 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
12478 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 12479 | |
80626a55 DE |
12480 | return dua->signature == dub->signature; |
12481 | } | |
3019eac3 | 12482 | |
80626a55 | 12483 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12484 | |
48b490f2 | 12485 | static htab_up |
298e9637 | 12486 | allocate_dwp_loaded_cutus_table () |
80626a55 | 12487 | { |
48b490f2 TT |
12488 | return htab_up (htab_create_alloc (3, |
12489 | hash_dwp_loaded_cutus, | |
12490 | eq_dwp_loaded_cutus, | |
12491 | NULL, xcalloc, xfree)); | |
80626a55 | 12492 | } |
3019eac3 | 12493 | |
ab5088bf DE |
12494 | /* Try to open DWP file FILE_NAME. |
12495 | The result is the bfd handle of the file. | |
12496 | If there is a problem finding or opening the file, return NULL. | |
12497 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12498 | same as symfile_bfd_open. */ | |
12499 | ||
192b62ce | 12500 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12501 | open_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12502 | const char *file_name) | |
ab5088bf | 12503 | { |
ed2dc618 SM |
12504 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, file_name, |
12505 | 1 /*is_dwp*/, | |
192b62ce | 12506 | 1 /*search_cwd*/)); |
6ac97d4c DE |
12507 | if (abfd != NULL) |
12508 | return abfd; | |
12509 | ||
12510 | /* Work around upstream bug 15652. | |
12511 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
12512 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
12513 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
12514 | of the executable's path may have discarded the needed info. | |
12515 | [IWBN if the dwp file name was recorded in the executable, akin to | |
12516 | .gnu_debuglink, but that doesn't exist yet.] | |
12517 | Strip the directory from FILE_NAME and search again. */ | |
12518 | if (*debug_file_directory != '\0') | |
12519 | { | |
12520 | /* Don't implicitly search the current directory here. | |
12521 | If the user wants to search "." to handle this case, | |
12522 | it must be added to debug-file-directory. */ | |
ed2dc618 SM |
12523 | return try_open_dwop_file (dwarf2_per_objfile, |
12524 | lbasename (file_name), 1 /*is_dwp*/, | |
6ac97d4c DE |
12525 | 0 /*search_cwd*/); |
12526 | } | |
12527 | ||
12528 | return NULL; | |
ab5088bf DE |
12529 | } |
12530 | ||
80626a55 DE |
12531 | /* Initialize the use of the DWP file for the current objfile. |
12532 | By convention the name of the DWP file is ${objfile}.dwp. | |
12533 | The result is NULL if it can't be found. */ | |
a766d390 | 12534 | |
400174b1 | 12535 | static std::unique_ptr<struct dwp_file> |
ed2dc618 | 12536 | open_and_init_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
80626a55 DE |
12537 | { |
12538 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 | 12539 | |
82bf32bc JK |
12540 | /* Try to find first .dwp for the binary file before any symbolic links |
12541 | resolving. */ | |
6c447423 DE |
12542 | |
12543 | /* If the objfile is a debug file, find the name of the real binary | |
12544 | file and get the name of dwp file from there. */ | |
d721ba37 | 12545 | std::string dwp_name; |
6c447423 DE |
12546 | if (objfile->separate_debug_objfile_backlink != NULL) |
12547 | { | |
12548 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
12549 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 12550 | |
d721ba37 | 12551 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
12552 | } |
12553 | else | |
d721ba37 PA |
12554 | dwp_name = objfile->original_name; |
12555 | ||
12556 | dwp_name += ".dwp"; | |
80626a55 | 12557 | |
ed2dc618 | 12558 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
12559 | if (dbfd == NULL |
12560 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
12561 | { | |
12562 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
12563 | dwp_name = objfile_name (objfile); |
12564 | dwp_name += ".dwp"; | |
ed2dc618 | 12565 | dbfd = open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
12566 | } |
12567 | ||
80626a55 DE |
12568 | if (dbfd == NULL) |
12569 | { | |
b4f54984 | 12570 | if (dwarf_read_debug) |
d721ba37 | 12571 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
400174b1 | 12572 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 12573 | } |
400174b1 TT |
12574 | |
12575 | const char *name = bfd_get_filename (dbfd.get ()); | |
12576 | std::unique_ptr<struct dwp_file> dwp_file | |
12577 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 12578 | |
0a0f4c01 | 12579 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 | 12580 | dwp_file->elf_sections = |
5989a64e | 12581 | OBSTACK_CALLOC (&dwarf2_per_objfile->per_bfd->obstack, |
80626a55 DE |
12582 | dwp_file->num_sections, asection *); |
12583 | ||
400174b1 TT |
12584 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12585 | dwarf2_locate_common_dwp_sections, | |
12586 | dwp_file.get ()); | |
80626a55 | 12587 | |
400174b1 TT |
12588 | dwp_file->cus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
12589 | 0); | |
80626a55 | 12590 | |
400174b1 TT |
12591 | dwp_file->tus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
12592 | 1); | |
80626a55 | 12593 | |
73869dc2 | 12594 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
12595 | if (dwp_file->cus && dwp_file->tus |
12596 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
12597 | { |
12598 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 12599 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 12600 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
12601 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
12602 | " TU version %s [in DWP file %s]"), | |
12603 | pulongest (dwp_file->cus->version), | |
d721ba37 | 12604 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 12605 | } |
08302ed2 DE |
12606 | |
12607 | if (dwp_file->cus) | |
12608 | dwp_file->version = dwp_file->cus->version; | |
12609 | else if (dwp_file->tus) | |
12610 | dwp_file->version = dwp_file->tus->version; | |
12611 | else | |
12612 | dwp_file->version = 2; | |
73869dc2 DE |
12613 | |
12614 | if (dwp_file->version == 2) | |
400174b1 TT |
12615 | bfd_map_over_sections (dwp_file->dbfd.get (), |
12616 | dwarf2_locate_v2_dwp_sections, | |
12617 | dwp_file.get ()); | |
73869dc2 | 12618 | |
298e9637 SM |
12619 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (); |
12620 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (); | |
80626a55 | 12621 | |
b4f54984 | 12622 | if (dwarf_read_debug) |
80626a55 DE |
12623 | { |
12624 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
12625 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
12626 | " %s CUs, %s TUs\n", |
12627 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
12628 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
12629 | } |
12630 | ||
12631 | return dwp_file; | |
3019eac3 | 12632 | } |
c906108c | 12633 | |
ab5088bf DE |
12634 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
12635 | ||
12636 | static struct dwp_file * | |
ed2dc618 | 12637 | get_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ab5088bf | 12638 | { |
5989a64e | 12639 | if (! dwarf2_per_objfile->per_bfd->dwp_checked) |
ab5088bf | 12640 | { |
5989a64e | 12641 | dwarf2_per_objfile->per_bfd->dwp_file |
ed2dc618 | 12642 | = open_and_init_dwp_file (dwarf2_per_objfile); |
5989a64e | 12643 | dwarf2_per_objfile->per_bfd->dwp_checked = 1; |
ab5088bf | 12644 | } |
5989a64e | 12645 | return dwarf2_per_objfile->per_bfd->dwp_file.get (); |
ab5088bf DE |
12646 | } |
12647 | ||
80626a55 DE |
12648 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
12649 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
12650 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 12651 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
12652 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
12653 | ||
12654 | This is called, for example, when wanting to read a variable with a | |
12655 | complex location. Therefore we don't want to do file i/o for every call. | |
12656 | Therefore we don't want to look for a DWO file on every call. | |
12657 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
12658 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
12659 | for a DWO file. | |
12660 | ||
1c658ad5 | 12661 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 12662 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 12663 | |
3019eac3 | 12664 | static struct dwo_unit * |
80626a55 DE |
12665 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
12666 | const char *dwo_name, const char *comp_dir, | |
12667 | ULONGEST signature, int is_debug_types) | |
3019eac3 | 12668 | { |
ed2dc618 | 12669 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_unit->dwarf2_per_objfile; |
3019eac3 | 12670 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 DE |
12671 | const char *kind = is_debug_types ? "TU" : "CU"; |
12672 | void **dwo_file_slot; | |
3019eac3 | 12673 | struct dwo_file *dwo_file; |
80626a55 | 12674 | struct dwp_file *dwp_file; |
cb1df416 | 12675 | |
6a506a2d DE |
12676 | /* First see if there's a DWP file. |
12677 | If we have a DWP file but didn't find the DWO inside it, don't | |
12678 | look for the original DWO file. It makes gdb behave differently | |
12679 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 12680 | |
ed2dc618 | 12681 | dwp_file = get_dwp_file (dwarf2_per_objfile); |
80626a55 | 12682 | if (dwp_file != NULL) |
cf2c3c16 | 12683 | { |
80626a55 DE |
12684 | const struct dwp_hash_table *dwp_htab = |
12685 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
12686 | ||
12687 | if (dwp_htab != NULL) | |
12688 | { | |
12689 | struct dwo_unit *dwo_cutu = | |
ed2dc618 | 12690 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, comp_dir, |
57d63ce2 | 12691 | signature, is_debug_types); |
80626a55 DE |
12692 | |
12693 | if (dwo_cutu != NULL) | |
12694 | { | |
b4f54984 | 12695 | if (dwarf_read_debug) |
80626a55 DE |
12696 | { |
12697 | fprintf_unfiltered (gdb_stdlog, | |
12698 | "Virtual DWO %s %s found: @%s\n", | |
12699 | kind, hex_string (signature), | |
12700 | host_address_to_string (dwo_cutu)); | |
12701 | } | |
12702 | return dwo_cutu; | |
12703 | } | |
12704 | } | |
12705 | } | |
6a506a2d | 12706 | else |
80626a55 | 12707 | { |
6a506a2d | 12708 | /* No DWP file, look for the DWO file. */ |
80626a55 | 12709 | |
ed2dc618 SM |
12710 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12711 | dwo_name, comp_dir); | |
6a506a2d | 12712 | if (*dwo_file_slot == NULL) |
80626a55 | 12713 | { |
6a506a2d DE |
12714 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
12715 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 12716 | } |
6a506a2d | 12717 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 12718 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 12719 | |
6a506a2d | 12720 | if (dwo_file != NULL) |
19c3d4c9 | 12721 | { |
6a506a2d DE |
12722 | struct dwo_unit *dwo_cutu = NULL; |
12723 | ||
12724 | if (is_debug_types && dwo_file->tus) | |
12725 | { | |
12726 | struct dwo_unit find_dwo_cutu; | |
12727 | ||
12728 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12729 | find_dwo_cutu.signature = signature; | |
9a3c8263 | 12730 | dwo_cutu |
b0b6a987 TT |
12731 | = (struct dwo_unit *) htab_find (dwo_file->tus.get (), |
12732 | &find_dwo_cutu); | |
6a506a2d | 12733 | } |
33c5cd75 | 12734 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 12735 | { |
33c5cd75 DB |
12736 | struct dwo_unit find_dwo_cutu; |
12737 | ||
12738 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
12739 | find_dwo_cutu.signature = signature; | |
b0b6a987 | 12740 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus.get (), |
33c5cd75 | 12741 | &find_dwo_cutu); |
6a506a2d DE |
12742 | } |
12743 | ||
12744 | if (dwo_cutu != NULL) | |
12745 | { | |
b4f54984 | 12746 | if (dwarf_read_debug) |
6a506a2d DE |
12747 | { |
12748 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
12749 | kind, dwo_name, hex_string (signature), | |
12750 | host_address_to_string (dwo_cutu)); | |
12751 | } | |
12752 | return dwo_cutu; | |
80626a55 DE |
12753 | } |
12754 | } | |
2e276125 | 12755 | } |
9cdd5dbd | 12756 | |
80626a55 DE |
12757 | /* We didn't find it. This could mean a dwo_id mismatch, or |
12758 | someone deleted the DWO/DWP file, or the search path isn't set up | |
12759 | correctly to find the file. */ | |
12760 | ||
b4f54984 | 12761 | if (dwarf_read_debug) |
80626a55 DE |
12762 | { |
12763 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
12764 | kind, dwo_name, hex_string (signature)); | |
12765 | } | |
3019eac3 | 12766 | |
6656a72d DE |
12767 | /* This is a warning and not a complaint because it can be caused by |
12768 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
12769 | { |
12770 | /* Print the name of the DWP file if we looked there, helps the user | |
12771 | better diagnose the problem. */ | |
791afaa2 | 12772 | std::string dwp_text; |
43942612 DE |
12773 | |
12774 | if (dwp_file != NULL) | |
791afaa2 TT |
12775 | dwp_text = string_printf (" [in DWP file %s]", |
12776 | lbasename (dwp_file->name)); | |
43942612 | 12777 | |
9d8780f0 | 12778 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 DE |
12779 | " [in module %s]"), |
12780 | kind, dwo_name, hex_string (signature), | |
791afaa2 | 12781 | dwp_text.c_str (), |
43942612 | 12782 | this_unit->is_debug_types ? "TU" : "CU", |
9d8780f0 | 12783 | sect_offset_str (this_unit->sect_off), objfile_name (objfile)); |
43942612 | 12784 | } |
3019eac3 | 12785 | return NULL; |
5fb290d7 DJ |
12786 | } |
12787 | ||
80626a55 DE |
12788 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
12789 | See lookup_dwo_cutu_unit for details. */ | |
12790 | ||
12791 | static struct dwo_unit * | |
12792 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
12793 | const char *dwo_name, const char *comp_dir, | |
12794 | ULONGEST signature) | |
12795 | { | |
12796 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
12797 | } | |
12798 | ||
12799 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
12800 | See lookup_dwo_cutu_unit for details. */ | |
12801 | ||
12802 | static struct dwo_unit * | |
12803 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
12804 | const char *dwo_name, const char *comp_dir) | |
12805 | { | |
12806 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
12807 | } | |
12808 | ||
89e63ee4 DE |
12809 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
12810 | ||
12811 | static int | |
12812 | queue_and_load_dwo_tu (void **slot, void *info) | |
12813 | { | |
12814 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
12815 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
12816 | ULONGEST signature = dwo_unit->signature; | |
12817 | struct signatured_type *sig_type = | |
12818 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
12819 | ||
12820 | if (sig_type != NULL) | |
12821 | { | |
12822 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
12823 | ||
12824 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
12825 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
12826 | while processing PER_CU. */ | |
12827 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
12828 | load_full_type_unit (sig_cu); | |
ae640021 | 12829 | per_cu->imported_symtabs_push (sig_cu); |
89e63ee4 DE |
12830 | } |
12831 | ||
12832 | return 1; | |
12833 | } | |
12834 | ||
12835 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
12836 | The DWO may have the only definition of the type, though it may not be | |
12837 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
12838 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
12839 | ||
12840 | static void | |
12841 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
12842 | { | |
12843 | struct dwo_unit *dwo_unit; | |
12844 | struct dwo_file *dwo_file; | |
12845 | ||
12846 | gdb_assert (!per_cu->is_debug_types); | |
ed2dc618 | 12847 | gdb_assert (get_dwp_file (per_cu->dwarf2_per_objfile) == NULL); |
89e63ee4 DE |
12848 | gdb_assert (per_cu->cu != NULL); |
12849 | ||
12850 | dwo_unit = per_cu->cu->dwo_unit; | |
12851 | gdb_assert (dwo_unit != NULL); | |
12852 | ||
12853 | dwo_file = dwo_unit->dwo_file; | |
12854 | if (dwo_file->tus != NULL) | |
b0b6a987 TT |
12855 | htab_traverse_noresize (dwo_file->tus.get (), queue_and_load_dwo_tu, |
12856 | per_cu); | |
89e63ee4 DE |
12857 | } |
12858 | ||
3019eac3 | 12859 | /* Read in various DIEs. */ |
348e048f | 12860 | |
d389af10 | 12861 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
12862 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
12863 | already referenced by DW_AT_abstract_origin from the children of the | |
12864 | current DIE. */ | |
d389af10 JK |
12865 | |
12866 | static void | |
12867 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
12868 | { | |
12869 | struct die_info *child_die; | |
791afaa2 | 12870 | sect_offset *offsetp; |
d389af10 JK |
12871 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
12872 | struct die_info *origin_die; | |
12873 | /* Iterator of the ORIGIN_DIE children. */ | |
12874 | struct die_info *origin_child_die; | |
d389af10 | 12875 | struct attribute *attr; |
cd02d79d PA |
12876 | struct dwarf2_cu *origin_cu; |
12877 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
12878 | |
12879 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
12880 | if (!attr) | |
12881 | return; | |
12882 | ||
cd02d79d PA |
12883 | /* Note that following die references may follow to a die in a |
12884 | different cu. */ | |
12885 | ||
12886 | origin_cu = cu; | |
12887 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
12888 | ||
12889 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
12890 | symbols in. */ | |
12891 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
12892 | origin_cu->list_in_scope = cu->list_in_scope; | |
12893 | ||
edb3359d DJ |
12894 | if (die->tag != origin_die->tag |
12895 | && !(die->tag == DW_TAG_inlined_subroutine | |
12896 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 12897 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
12898 | sect_offset_str (die->sect_off), |
12899 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 12900 | |
791afaa2 | 12901 | std::vector<sect_offset> offsets; |
d389af10 | 12902 | |
3ea89b92 PMR |
12903 | for (child_die = die->child; |
12904 | child_die && child_die->tag; | |
436c571c | 12905 | child_die = child_die->sibling) |
3ea89b92 PMR |
12906 | { |
12907 | struct die_info *child_origin_die; | |
12908 | struct dwarf2_cu *child_origin_cu; | |
12909 | ||
12910 | /* We are trying to process concrete instance entries: | |
216f72a1 | 12911 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
12912 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
12913 | present in the abstract instance but not referenced in the concrete | |
12914 | one. */ | |
216f72a1 JK |
12915 | if (child_die->tag == DW_TAG_call_site |
12916 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
12917 | continue; |
12918 | ||
c38f313d DJ |
12919 | /* For each CHILD_DIE, find the corresponding child of |
12920 | ORIGIN_DIE. If there is more than one layer of | |
12921 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
12922 | but GCC versions at least through 4.4 generate this (GCC PR | |
12923 | 40573). */ | |
3ea89b92 PMR |
12924 | child_origin_die = child_die; |
12925 | child_origin_cu = cu; | |
c38f313d DJ |
12926 | while (1) |
12927 | { | |
cd02d79d PA |
12928 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
12929 | child_origin_cu); | |
c38f313d DJ |
12930 | if (attr == NULL) |
12931 | break; | |
cd02d79d PA |
12932 | child_origin_die = follow_die_ref (child_origin_die, attr, |
12933 | &child_origin_cu); | |
c38f313d DJ |
12934 | } |
12935 | ||
d389af10 JK |
12936 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
12937 | counterpart may exist. */ | |
c38f313d | 12938 | if (child_origin_die != child_die) |
d389af10 | 12939 | { |
edb3359d DJ |
12940 | if (child_die->tag != child_origin_die->tag |
12941 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
12942 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 12943 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 12944 | "different tags"), |
9d8780f0 SM |
12945 | sect_offset_str (child_die->sect_off), |
12946 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 12947 | if (child_origin_die->parent != origin_die) |
b98664d3 | 12948 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 12949 | "different parents"), |
9d8780f0 SM |
12950 | sect_offset_str (child_die->sect_off), |
12951 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 12952 | else |
791afaa2 | 12953 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 12954 | } |
d389af10 | 12955 | } |
791afaa2 TT |
12956 | std::sort (offsets.begin (), offsets.end ()); |
12957 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
12958 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 12959 | if (offsetp[-1] == *offsetp) |
b98664d3 | 12960 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
12961 | "to DIE %s as their abstract origin"), |
12962 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 12963 | |
791afaa2 | 12964 | offsetp = offsets.data (); |
d389af10 JK |
12965 | origin_child_die = origin_die->child; |
12966 | while (origin_child_die && origin_child_die->tag) | |
12967 | { | |
12968 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 12969 | while (offsetp < offsets_end |
9c541725 | 12970 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 12971 | offsetp++; |
b64f50a1 | 12972 | if (offsetp >= offsets_end |
9c541725 | 12973 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 12974 | { |
adde2bff DE |
12975 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
12976 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
12977 | This can happen with mutually referenced abstract_origins. | |
12978 | PR 16581. */ | |
12979 | if (!origin_child_die->in_process) | |
12980 | process_die (origin_child_die, origin_cu); | |
d389af10 | 12981 | } |
436c571c | 12982 | origin_child_die = origin_child_die->sibling; |
d389af10 | 12983 | } |
cd02d79d | 12984 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
8d9a2568 KB |
12985 | |
12986 | if (cu != origin_cu) | |
12987 | compute_delayed_physnames (origin_cu); | |
d389af10 JK |
12988 | } |
12989 | ||
c906108c | 12990 | static void |
e7c27a73 | 12991 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12992 | { |
5e22e966 | 12993 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 12994 | struct gdbarch *gdbarch = objfile->arch (); |
fe978cb0 | 12995 | struct context_stack *newobj; |
c906108c SS |
12996 | CORE_ADDR lowpc; |
12997 | CORE_ADDR highpc; | |
12998 | struct die_info *child_die; | |
edb3359d | 12999 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13000 | const char *name; |
e142c38c | 13001 | CORE_ADDR baseaddr; |
801e3a5b | 13002 | struct block *block; |
edb3359d | 13003 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13004 | std::vector<struct symbol *> template_args; |
34eaf542 | 13005 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13006 | |
13007 | if (inlined_func) | |
13008 | { | |
13009 | /* If we do not have call site information, we can't show the | |
13010 | caller of this inlined function. That's too confusing, so | |
13011 | only use the scope for local variables. */ | |
13012 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13013 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13014 | if (call_line == NULL || call_file == NULL) | |
13015 | { | |
13016 | read_lexical_block_scope (die, cu); | |
13017 | return; | |
13018 | } | |
13019 | } | |
c906108c | 13020 | |
b3b3bada | 13021 | baseaddr = objfile->text_section_offset (); |
e142c38c | 13022 | |
94af9270 | 13023 | name = dwarf2_name (die, cu); |
c906108c | 13024 | |
e8d05480 JB |
13025 | /* Ignore functions with missing or empty names. These are actually |
13026 | illegal according to the DWARF standard. */ | |
13027 | if (name == NULL) | |
13028 | { | |
b98664d3 | 13029 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13030 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13031 | return; |
13032 | } | |
13033 | ||
13034 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13035 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13036 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13037 | { |
ae4d0c03 PM |
13038 | attr = dwarf2_attr (die, DW_AT_external, cu); |
13039 | if (!attr || !DW_UNSND (attr)) | |
b98664d3 | 13040 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13041 | "for subprogram DIE at %s"), |
13042 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13043 | return; |
13044 | } | |
c906108c | 13045 | |
3e29f34a MR |
13046 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13047 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13048 | |
34eaf542 TT |
13049 | /* If we have any template arguments, then we must allocate a |
13050 | different sort of symbol. */ | |
436c571c | 13051 | for (child_die = die->child; child_die; child_die = child_die->sibling) |
34eaf542 TT |
13052 | { |
13053 | if (child_die->tag == DW_TAG_template_type_param | |
13054 | || child_die->tag == DW_TAG_template_value_param) | |
13055 | { | |
8c14c3a3 | 13056 | templ_func = new (&objfile->objfile_obstack) template_symbol; |
cf724bc9 | 13057 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13058 | break; |
13059 | } | |
13060 | } | |
13061 | ||
c24bdb02 | 13062 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
13063 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13064 | (struct symbol *) templ_func); | |
4c2df51b | 13065 | |
81873cc8 | 13066 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
987012b8 | 13067 | set_objfile_main_name (objfile, newobj->name->linkage_name (), |
81873cc8 TV |
13068 | cu->language); |
13069 | ||
4cecd739 DJ |
13070 | /* If there is a location expression for DW_AT_frame_base, record |
13071 | it. */ | |
e142c38c | 13072 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
435d3d88 | 13073 | if (attr != nullptr) |
fe978cb0 | 13074 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13075 | |
63e43d3a PMR |
13076 | /* If there is a location for the static link, record it. */ |
13077 | newobj->static_link = NULL; | |
13078 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
435d3d88 | 13079 | if (attr != nullptr) |
63e43d3a | 13080 | { |
224c3ddb SM |
13081 | newobj->static_link |
13082 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
9a49df9d | 13083 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link, |
09ba997f | 13084 | cu->per_cu->addr_type ()); |
63e43d3a PMR |
13085 | } |
13086 | ||
c24bdb02 | 13087 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 13088 | |
639d11d3 | 13089 | if (die->child != NULL) |
c906108c | 13090 | { |
639d11d3 | 13091 | child_die = die->child; |
c906108c SS |
13092 | while (child_die && child_die->tag) |
13093 | { | |
34eaf542 TT |
13094 | if (child_die->tag == DW_TAG_template_type_param |
13095 | || child_die->tag == DW_TAG_template_value_param) | |
13096 | { | |
13097 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13098 | ||
f1078f66 | 13099 | if (arg != NULL) |
2f4732b0 | 13100 | template_args.push_back (arg); |
34eaf542 TT |
13101 | } |
13102 | else | |
13103 | process_die (child_die, cu); | |
436c571c | 13104 | child_die = child_die->sibling; |
c906108c SS |
13105 | } |
13106 | } | |
13107 | ||
d389af10 JK |
13108 | inherit_abstract_dies (die, cu); |
13109 | ||
4a811a97 UW |
13110 | /* If we have a DW_AT_specification, we might need to import using |
13111 | directives from the context of the specification DIE. See the | |
13112 | comment in determine_prefix. */ | |
13113 | if (cu->language == language_cplus | |
13114 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13115 | { | |
13116 | struct dwarf2_cu *spec_cu = cu; | |
13117 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13118 | ||
13119 | while (spec_die) | |
13120 | { | |
13121 | child_die = spec_die->child; | |
13122 | while (child_die && child_die->tag) | |
13123 | { | |
13124 | if (child_die->tag == DW_TAG_imported_module) | |
13125 | process_die (child_die, spec_cu); | |
436c571c | 13126 | child_die = child_die->sibling; |
4a811a97 UW |
13127 | } |
13128 | ||
13129 | /* In some cases, GCC generates specification DIEs that | |
13130 | themselves contain DW_AT_specification attributes. */ | |
13131 | spec_die = die_specification (spec_die, &spec_cu); | |
13132 | } | |
13133 | } | |
13134 | ||
c24bdb02 | 13135 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13136 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13137 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13138 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13139 | |
df8a16a1 | 13140 | /* For C++, set the block's scope. */ |
45280282 IB |
13141 | if ((cu->language == language_cplus |
13142 | || cu->language == language_fortran | |
c44af4eb TT |
13143 | || cu->language == language_d |
13144 | || cu->language == language_rust) | |
4d4ec4e5 | 13145 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13146 | block_set_scope (block, determine_prefix (die, cu), |
13147 | &objfile->objfile_obstack); | |
df8a16a1 | 13148 | |
801e3a5b JB |
13149 | /* If we have address ranges, record them. */ |
13150 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13151 | |
a60f3166 | 13152 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13153 | |
34eaf542 | 13154 | /* Attach template arguments to function. */ |
2f4732b0 | 13155 | if (!template_args.empty ()) |
34eaf542 TT |
13156 | { |
13157 | gdb_assert (templ_func != NULL); | |
13158 | ||
2f4732b0 | 13159 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13160 | templ_func->template_arguments |
8d749320 SM |
13161 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
13162 | templ_func->n_template_arguments); | |
34eaf542 | 13163 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13164 | template_args.data (), |
34eaf542 | 13165 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13166 | |
13167 | /* Make sure that the symtab is set on the new symbols. Even | |
13168 | though they don't appear in this symtab directly, other parts | |
13169 | of gdb assume that symbols do, and this is reasonably | |
13170 | true. */ | |
8634679f | 13171 | for (symbol *sym : template_args) |
3e1d3d8c | 13172 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13173 | } |
13174 | ||
208d8187 JB |
13175 | /* In C++, we can have functions nested inside functions (e.g., when |
13176 | a function declares a class that has methods). This means that | |
13177 | when we finish processing a function scope, we may need to go | |
13178 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13179 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13180 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13181 | |
921e78cf JB |
13182 | /* If we've finished processing a top-level function, subsequent |
13183 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13184 | if (cu->get_builder ()->outermost_context_p ()) |
13185 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13186 | } |
13187 | ||
13188 | /* Process all the DIES contained within a lexical block scope. Start | |
13189 | a new scope, process the dies, and then close the scope. */ | |
13190 | ||
13191 | static void | |
e7c27a73 | 13192 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13193 | { |
5e22e966 | 13194 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13195 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
13196 | CORE_ADDR lowpc, highpc; |
13197 | struct die_info *child_die; | |
e142c38c DJ |
13198 | CORE_ADDR baseaddr; |
13199 | ||
b3b3bada | 13200 | baseaddr = objfile->text_section_offset (); |
c906108c SS |
13201 | |
13202 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13203 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13204 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13205 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13206 | describe ranges. */ |
e385593e JK |
13207 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13208 | { | |
13209 | case PC_BOUNDS_NOT_PRESENT: | |
13210 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13211 | there was no wrapping by that DW_TAG_lexical_block. | |
13212 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13213 | for (child_die = die->child; | |
13214 | child_die != NULL && child_die->tag; | |
436c571c | 13215 | child_die = child_die->sibling) |
4f7bc5ed TT |
13216 | { |
13217 | /* We might already be processing this DIE. This can happen | |
13218 | in an unusual circumstance -- where a subroutine A | |
13219 | appears lexically in another subroutine B, but A actually | |
13220 | inlines B. The recursion is broken here, rather than in | |
13221 | inherit_abstract_dies, because it seems better to simply | |
13222 | drop concrete children here. */ | |
13223 | if (!child_die->in_process) | |
13224 | process_die (child_die, cu); | |
13225 | } | |
e385593e JK |
13226 | return; |
13227 | case PC_BOUNDS_INVALID: | |
13228 | return; | |
13229 | } | |
3e29f34a MR |
13230 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13231 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13232 | |
c24bdb02 | 13233 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13234 | if (die->child != NULL) |
c906108c | 13235 | { |
639d11d3 | 13236 | child_die = die->child; |
c906108c SS |
13237 | while (child_die && child_die->tag) |
13238 | { | |
e7c27a73 | 13239 | process_die (child_die, cu); |
436c571c | 13240 | child_die = child_die->sibling; |
c906108c SS |
13241 | } |
13242 | } | |
3ea89b92 | 13243 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13244 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13245 | |
c24bdb02 KS |
13246 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13247 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13248 | { |
801e3a5b | 13249 | struct block *block |
c24bdb02 | 13250 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13251 | cstk.start_addr, highpc); |
801e3a5b JB |
13252 | |
13253 | /* Note that recording ranges after traversing children, as we | |
13254 | do here, means that recording a parent's ranges entails | |
13255 | walking across all its children's ranges as they appear in | |
13256 | the address map, which is quadratic behavior. | |
13257 | ||
13258 | It would be nicer to record the parent's ranges before | |
13259 | traversing its children, simply overriding whatever you find | |
13260 | there. But since we don't even decide whether to create a | |
13261 | block until after we've traversed its children, that's hard | |
13262 | to do. */ | |
13263 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13264 | } |
c24bdb02 KS |
13265 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13266 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13267 | } |
13268 | ||
216f72a1 | 13269 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13270 | |
13271 | static void | |
13272 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13273 | { | |
5e22e966 | 13274 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 13275 | struct objfile *objfile = per_objfile->objfile; |
08feed99 | 13276 | struct gdbarch *gdbarch = objfile->arch (); |
96408a79 SA |
13277 | CORE_ADDR pc, baseaddr; |
13278 | struct attribute *attr; | |
13279 | struct call_site *call_site, call_site_local; | |
13280 | void **slot; | |
13281 | int nparams; | |
13282 | struct die_info *child_die; | |
13283 | ||
b3b3bada | 13284 | baseaddr = objfile->text_section_offset (); |
96408a79 | 13285 | |
216f72a1 JK |
13286 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13287 | if (attr == NULL) | |
13288 | { | |
13289 | /* This was a pre-DWARF-5 GNU extension alias | |
13290 | for DW_AT_call_return_pc. */ | |
13291 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13292 | } | |
96408a79 SA |
13293 | if (!attr) |
13294 | { | |
b98664d3 | 13295 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13296 | "DIE %s [in module %s]"), |
13297 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13298 | return; |
13299 | } | |
cd6c91b4 | 13300 | pc = attr->value_as_address () + baseaddr; |
3e29f34a | 13301 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13302 | |
13303 | if (cu->call_site_htab == NULL) | |
13304 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13305 | NULL, &objfile->objfile_obstack, | |
13306 | hashtab_obstack_allocate, NULL); | |
13307 | call_site_local.pc = pc; | |
13308 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13309 | if (*slot != NULL) | |
13310 | { | |
b98664d3 | 13311 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13312 | "DIE %s [in module %s]"), |
13313 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13314 | objfile_name (objfile)); |
96408a79 SA |
13315 | return; |
13316 | } | |
13317 | ||
13318 | /* Count parameters at the caller. */ | |
13319 | ||
13320 | nparams = 0; | |
13321 | for (child_die = die->child; child_die && child_die->tag; | |
436c571c | 13322 | child_die = child_die->sibling) |
96408a79 | 13323 | { |
216f72a1 JK |
13324 | if (child_die->tag != DW_TAG_call_site_parameter |
13325 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 | 13326 | { |
b98664d3 | 13327 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13328 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13329 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13330 | objfile_name (objfile)); |
96408a79 SA |
13331 | continue; |
13332 | } | |
13333 | ||
13334 | nparams++; | |
13335 | } | |
13336 | ||
224c3ddb SM |
13337 | call_site |
13338 | = ((struct call_site *) | |
13339 | obstack_alloc (&objfile->objfile_obstack, | |
13340 | sizeof (*call_site) | |
13341 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13342 | *slot = call_site; |
13343 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13344 | call_site->pc = pc; | |
13345 | ||
216f72a1 JK |
13346 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13347 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13348 | { |
13349 | struct die_info *func_die; | |
13350 | ||
13351 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13352 | for (func_die = die->parent; | |
13353 | func_die && func_die->tag != DW_TAG_subprogram | |
13354 | && func_die->tag != DW_TAG_subroutine_type; | |
13355 | func_die = func_die->parent); | |
13356 | ||
216f72a1 JK |
13357 | /* DW_AT_call_all_calls is a superset |
13358 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13359 | if (func_die |
216f72a1 | 13360 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 13361 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 13362 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13363 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13364 | { | |
13365 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13366 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13367 | both the initial caller containing the real return address PC and | |
13368 | the final callee containing the current PC of a chain of tail | |
13369 | calls do not need to have the tail call list complete. But any | |
13370 | function candidate for a virtual tail call frame searched via | |
13371 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13372 | determined unambiguously. */ | |
13373 | } | |
13374 | else | |
13375 | { | |
13376 | struct type *func_type = NULL; | |
13377 | ||
13378 | if (func_die) | |
13379 | func_type = get_die_type (func_die, cu); | |
13380 | if (func_type != NULL) | |
13381 | { | |
78134374 | 13382 | gdb_assert (func_type->code () == TYPE_CODE_FUNC); |
96408a79 SA |
13383 | |
13384 | /* Enlist this call site to the function. */ | |
13385 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13386 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13387 | } | |
13388 | else | |
b98664d3 | 13389 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13390 | "DIE %s [in module %s]"), |
13391 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13392 | } |
13393 | } | |
13394 | ||
216f72a1 JK |
13395 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13396 | if (attr == NULL) | |
13397 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
13398 | if (attr == NULL) | |
13399 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 13400 | if (attr == NULL) |
216f72a1 JK |
13401 | { |
13402 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
13403 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13404 | } | |
96408a79 | 13405 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
4fc6c0d5 | 13406 | if (!attr || (attr->form_is_block () && DW_BLOCK (attr)->size == 0)) |
96408a79 | 13407 | /* Keep NULL DWARF_BLOCK. */; |
4fc6c0d5 | 13408 | else if (attr->form_is_block ()) |
96408a79 SA |
13409 | { |
13410 | struct dwarf2_locexpr_baton *dlbaton; | |
13411 | ||
8d749320 | 13412 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
13413 | dlbaton->data = DW_BLOCK (attr)->data; |
13414 | dlbaton->size = DW_BLOCK (attr)->size; | |
a50264ba | 13415 | dlbaton->per_objfile = per_objfile; |
96408a79 SA |
13416 | dlbaton->per_cu = cu->per_cu; |
13417 | ||
13418 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
13419 | } | |
cd6c91b4 | 13420 | else if (attr->form_is_ref ()) |
96408a79 | 13421 | { |
96408a79 SA |
13422 | struct dwarf2_cu *target_cu = cu; |
13423 | struct die_info *target_die; | |
13424 | ||
ac9ec31b | 13425 | target_die = follow_die_ref (die, attr, &target_cu); |
5e22e966 | 13426 | gdb_assert (target_cu->per_objfile->objfile == objfile); |
96408a79 SA |
13427 | if (die_is_declaration (target_die, target_cu)) |
13428 | { | |
7d45c7c3 | 13429 | const char *target_physname; |
9112db09 JK |
13430 | |
13431 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 13432 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 13433 | if (target_physname == NULL) |
9112db09 | 13434 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 13435 | if (target_physname == NULL) |
b98664d3 | 13436 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13437 | "physname, for referencing DIE %s [in module %s]"), |
13438 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13439 | else |
7d455152 | 13440 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
13441 | } |
13442 | else | |
13443 | { | |
13444 | CORE_ADDR lowpc; | |
13445 | ||
13446 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 13447 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 13448 | <= PC_BOUNDS_INVALID) |
b98664d3 | 13449 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13450 | "low pc, for referencing DIE %s [in module %s]"), |
13451 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13452 | else |
3e29f34a MR |
13453 | { |
13454 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
13455 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
13456 | } | |
96408a79 SA |
13457 | } |
13458 | } | |
13459 | else | |
b98664d3 | 13460 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
13461 | "block nor reference, for DIE %s [in module %s]"), |
13462 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13463 | |
13464 | call_site->per_cu = cu->per_cu; | |
13465 | ||
13466 | for (child_die = die->child; | |
13467 | child_die && child_die->tag; | |
436c571c | 13468 | child_die = child_die->sibling) |
96408a79 | 13469 | { |
96408a79 | 13470 | struct call_site_parameter *parameter; |
1788b2d3 | 13471 | struct attribute *loc, *origin; |
96408a79 | 13472 | |
216f72a1 JK |
13473 | if (child_die->tag != DW_TAG_call_site_parameter |
13474 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
13475 | { |
13476 | /* Already printed the complaint above. */ | |
13477 | continue; | |
13478 | } | |
13479 | ||
13480 | gdb_assert (call_site->parameter_count < nparams); | |
13481 | parameter = &call_site->parameter[call_site->parameter_count]; | |
13482 | ||
1788b2d3 JK |
13483 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
13484 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 13485 | register is contained in DW_AT_call_value. */ |
96408a79 | 13486 | |
24c5c679 | 13487 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
13488 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
13489 | if (origin == NULL) | |
13490 | { | |
13491 | /* This was a pre-DWARF-5 GNU extension alias | |
13492 | for DW_AT_call_parameter. */ | |
13493 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
13494 | } | |
cd6c91b4 | 13495 | if (loc == NULL && origin != NULL && origin->form_is_ref ()) |
1788b2d3 | 13496 | { |
1788b2d3 | 13497 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 | 13498 | |
0826b30a | 13499 | sect_offset sect_off = origin->get_ref_die_offset (); |
4057dfde | 13500 | if (!cu->header.offset_in_cu_p (sect_off)) |
d76b7dbc JK |
13501 | { |
13502 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
13503 | binding can be done only inside one CU. Such referenced DIE | |
13504 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 13505 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
13506 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13507 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13508 | objfile_name (objfile)); |
d76b7dbc JK |
13509 | continue; |
13510 | } | |
9c541725 PA |
13511 | parameter->u.param_cu_off |
13512 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 | 13513 | } |
4fc6c0d5 | 13514 | else if (loc == NULL || origin != NULL || !loc->form_is_block ()) |
96408a79 | 13515 | { |
b98664d3 | 13516 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
13517 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13518 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13519 | continue; |
13520 | } | |
24c5c679 | 13521 | else |
96408a79 | 13522 | { |
24c5c679 JK |
13523 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
13524 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
13525 | if (parameter->u.dwarf_reg != -1) | |
13526 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
13527 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
13528 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
13529 | ¶meter->u.fb_offset)) | |
13530 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
13531 | else | |
13532 | { | |
b98664d3 | 13533 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 13534 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 13535 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 13536 | "[in module %s]"), |
9d8780f0 | 13537 | sect_offset_str (child_die->sect_off), |
9c541725 | 13538 | objfile_name (objfile)); |
24c5c679 JK |
13539 | continue; |
13540 | } | |
96408a79 SA |
13541 | } |
13542 | ||
216f72a1 JK |
13543 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
13544 | if (attr == NULL) | |
13545 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
4fc6c0d5 | 13546 | if (attr == NULL || !attr->form_is_block ()) |
96408a79 | 13547 | { |
b98664d3 | 13548 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
13549 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13550 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13551 | objfile_name (objfile)); |
96408a79 SA |
13552 | continue; |
13553 | } | |
13554 | parameter->value = DW_BLOCK (attr)->data; | |
13555 | parameter->value_size = DW_BLOCK (attr)->size; | |
13556 | ||
13557 | /* Parameters are not pre-cleared by memset above. */ | |
13558 | parameter->data_value = NULL; | |
13559 | parameter->data_value_size = 0; | |
13560 | call_site->parameter_count++; | |
13561 | ||
216f72a1 JK |
13562 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
13563 | if (attr == NULL) | |
13564 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
435d3d88 | 13565 | if (attr != nullptr) |
96408a79 | 13566 | { |
4fc6c0d5 | 13567 | if (!attr->form_is_block ()) |
b98664d3 | 13568 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
13569 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13570 | sect_offset_str (child_die->sect_off), | |
9c541725 | 13571 | objfile_name (objfile)); |
96408a79 SA |
13572 | else |
13573 | { | |
13574 | parameter->data_value = DW_BLOCK (attr)->data; | |
13575 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
13576 | } | |
13577 | } | |
13578 | } | |
13579 | } | |
13580 | ||
71a3c369 TT |
13581 | /* Helper function for read_variable. If DIE represents a virtual |
13582 | table, then return the type of the concrete object that is | |
13583 | associated with the virtual table. Otherwise, return NULL. */ | |
13584 | ||
13585 | static struct type * | |
13586 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
13587 | { | |
13588 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
13589 | if (attr == NULL) | |
13590 | return NULL; | |
13591 | ||
13592 | /* Find the type DIE. */ | |
13593 | struct die_info *type_die = NULL; | |
13594 | struct dwarf2_cu *type_cu = cu; | |
13595 | ||
cd6c91b4 | 13596 | if (attr->form_is_ref ()) |
71a3c369 TT |
13597 | type_die = follow_die_ref (die, attr, &type_cu); |
13598 | if (type_die == NULL) | |
13599 | return NULL; | |
13600 | ||
13601 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
13602 | return NULL; | |
13603 | return die_containing_type (type_die, type_cu); | |
13604 | } | |
13605 | ||
13606 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
13607 | ||
13608 | static void | |
13609 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
13610 | { | |
13611 | struct rust_vtable_symbol *storage = NULL; | |
13612 | ||
13613 | if (cu->language == language_rust) | |
13614 | { | |
13615 | struct type *containing_type = rust_containing_type (die, cu); | |
13616 | ||
13617 | if (containing_type != NULL) | |
13618 | { | |
5e22e966 | 13619 | struct objfile *objfile = cu->per_objfile->objfile; |
71a3c369 | 13620 | |
8c14c3a3 | 13621 | storage = new (&objfile->objfile_obstack) rust_vtable_symbol; |
71a3c369 | 13622 | storage->concrete_type = containing_type; |
cf724bc9 | 13623 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
13624 | } |
13625 | } | |
13626 | ||
e4a62c65 TV |
13627 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
13628 | struct attribute *abstract_origin | |
13629 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13630 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
13631 | if (res == NULL && loc && abstract_origin) | |
13632 | { | |
13633 | /* We have a variable without a name, but with a location and an abstract | |
13634 | origin. This may be a concrete instance of an abstract variable | |
13635 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
13636 | later. */ | |
13637 | struct dwarf2_cu *origin_cu = cu; | |
13638 | struct die_info *origin_die | |
13639 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
5e22e966 SM |
13640 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13641 | per_objfile->per_bfd->abstract_to_concrete | |
13642 | [origin_die->sect_off].push_back (die->sect_off); | |
e4a62c65 | 13643 | } |
71a3c369 TT |
13644 | } |
13645 | ||
43988095 JK |
13646 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
13647 | reading .debug_rnglists. | |
13648 | Callback's type should be: | |
13649 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13650 | Return true if the attributes are present and valid, otherwise, | |
13651 | return false. */ | |
13652 | ||
13653 | template <typename Callback> | |
13654 | static bool | |
13655 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
13656 | Callback &&callback) | |
13657 | { | |
5e22e966 | 13658 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 13659 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43988095 | 13660 | bfd *obfd = objfile->obfd; |
43988095 | 13661 | /* Base address selection entry. */ |
2b24b6e4 | 13662 | gdb::optional<CORE_ADDR> base; |
43988095 | 13663 | const gdb_byte *buffer; |
43988095 JK |
13664 | CORE_ADDR baseaddr; |
13665 | bool overflow = false; | |
13666 | ||
43988095 JK |
13667 | base = cu->base_address; |
13668 | ||
5989a64e SM |
13669 | dwarf2_per_objfile->per_bfd->rnglists.read (objfile); |
13670 | if (offset >= dwarf2_per_objfile->per_bfd->rnglists.size) | |
43988095 | 13671 | { |
b98664d3 | 13672 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
13673 | offset); |
13674 | return false; | |
13675 | } | |
5989a64e | 13676 | buffer = dwarf2_per_objfile->per_bfd->rnglists.buffer + offset; |
43988095 | 13677 | |
b3b3bada | 13678 | baseaddr = objfile->text_section_offset (); |
43988095 JK |
13679 | |
13680 | while (1) | |
13681 | { | |
7814882a JK |
13682 | /* Initialize it due to a false compiler warning. */ |
13683 | CORE_ADDR range_beginning = 0, range_end = 0; | |
5989a64e SM |
13684 | const gdb_byte *buf_end = (dwarf2_per_objfile->per_bfd->rnglists.buffer |
13685 | + dwarf2_per_objfile->per_bfd->rnglists.size); | |
43988095 JK |
13686 | unsigned int bytes_read; |
13687 | ||
13688 | if (buffer == buf_end) | |
13689 | { | |
13690 | overflow = true; | |
13691 | break; | |
13692 | } | |
13693 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
13694 | switch (rlet) | |
13695 | { | |
13696 | case DW_RLE_end_of_list: | |
13697 | break; | |
13698 | case DW_RLE_base_address: | |
13699 | if (buffer + cu->header.addr_size > buf_end) | |
13700 | { | |
13701 | overflow = true; | |
13702 | break; | |
13703 | } | |
c8a7a66f | 13704 | base = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13705 | buffer += bytes_read; |
13706 | break; | |
13707 | case DW_RLE_start_length: | |
13708 | if (buffer + cu->header.addr_size > buf_end) | |
13709 | { | |
13710 | overflow = true; | |
13711 | break; | |
13712 | } | |
c8a7a66f TT |
13713 | range_beginning = cu->header.read_address (obfd, buffer, |
13714 | &bytes_read); | |
43988095 JK |
13715 | buffer += bytes_read; |
13716 | range_end = (range_beginning | |
13717 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
13718 | buffer += bytes_read; | |
13719 | if (buffer > buf_end) | |
13720 | { | |
13721 | overflow = true; | |
13722 | break; | |
13723 | } | |
13724 | break; | |
13725 | case DW_RLE_offset_pair: | |
13726 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13727 | buffer += bytes_read; | |
13728 | if (buffer > buf_end) | |
13729 | { | |
13730 | overflow = true; | |
13731 | break; | |
13732 | } | |
13733 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
13734 | buffer += bytes_read; | |
13735 | if (buffer > buf_end) | |
13736 | { | |
13737 | overflow = true; | |
13738 | break; | |
13739 | } | |
13740 | break; | |
13741 | case DW_RLE_start_end: | |
13742 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
13743 | { | |
13744 | overflow = true; | |
13745 | break; | |
13746 | } | |
c8a7a66f TT |
13747 | range_beginning = cu->header.read_address (obfd, buffer, |
13748 | &bytes_read); | |
43988095 | 13749 | buffer += bytes_read; |
c8a7a66f | 13750 | range_end = cu->header.read_address (obfd, buffer, &bytes_read); |
43988095 JK |
13751 | buffer += bytes_read; |
13752 | break; | |
13753 | default: | |
b98664d3 | 13754 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13755 | return false; |
13756 | } | |
13757 | if (rlet == DW_RLE_end_of_list || overflow) | |
13758 | break; | |
13759 | if (rlet == DW_RLE_base_address) | |
13760 | continue; | |
13761 | ||
2b24b6e4 | 13762 | if (!base.has_value ()) |
43988095 JK |
13763 | { |
13764 | /* We have no valid base address for the ranges | |
13765 | data. */ | |
b98664d3 | 13766 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
13767 | return false; |
13768 | } | |
13769 | ||
13770 | if (range_beginning > range_end) | |
13771 | { | |
13772 | /* Inverted range entries are invalid. */ | |
b98664d3 | 13773 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
13774 | return false; |
13775 | } | |
13776 | ||
13777 | /* Empty range entries have no effect. */ | |
13778 | if (range_beginning == range_end) | |
13779 | continue; | |
13780 | ||
2b24b6e4 TT |
13781 | range_beginning += *base; |
13782 | range_end += *base; | |
43988095 JK |
13783 | |
13784 | /* A not-uncommon case of bad debug info. | |
13785 | Don't pollute the addrmap with bad data. */ | |
13786 | if (range_beginning + baseaddr == 0 | |
5989a64e | 13787 | && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
43988095 | 13788 | { |
b98664d3 | 13789 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
13790 | " [in module %s]"), objfile_name (objfile)); |
13791 | continue; | |
13792 | } | |
13793 | ||
13794 | callback (range_beginning, range_end); | |
13795 | } | |
13796 | ||
13797 | if (overflow) | |
13798 | { | |
b98664d3 | 13799 | complaint (_("Offset %d is not terminated " |
43988095 JK |
13800 | "for DW_AT_ranges attribute"), |
13801 | offset); | |
13802 | return false; | |
13803 | } | |
13804 | ||
13805 | return true; | |
13806 | } | |
13807 | ||
13808 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
13809 | Callback's type should be: | |
13810 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 13811 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 13812 | |
43988095 | 13813 | template <typename Callback> |
43039443 | 13814 | static int |
5f46c5a5 | 13815 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 13816 | Callback &&callback) |
43039443 | 13817 | { |
5e22e966 SM |
13818 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
13819 | struct objfile *objfile = per_objfile->objfile; | |
43039443 JK |
13820 | struct comp_unit_head *cu_header = &cu->header; |
13821 | bfd *obfd = objfile->obfd; | |
13822 | unsigned int addr_size = cu_header->addr_size; | |
13823 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
13824 | /* Base address selection entry. */ | |
2b24b6e4 | 13825 | gdb::optional<CORE_ADDR> base; |
43039443 | 13826 | unsigned int dummy; |
d521ce57 | 13827 | const gdb_byte *buffer; |
ff013f42 | 13828 | CORE_ADDR baseaddr; |
43039443 | 13829 | |
43988095 JK |
13830 | if (cu_header->version >= 5) |
13831 | return dwarf2_rnglists_process (offset, cu, callback); | |
13832 | ||
d00adf39 | 13833 | base = cu->base_address; |
43039443 | 13834 | |
5e22e966 SM |
13835 | per_objfile->per_bfd->ranges.read (objfile); |
13836 | if (offset >= per_objfile->per_bfd->ranges.size) | |
43039443 | 13837 | { |
b98664d3 | 13838 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
13839 | offset); |
13840 | return 0; | |
13841 | } | |
5e22e966 | 13842 | buffer = per_objfile->per_bfd->ranges.buffer + offset; |
43039443 | 13843 | |
b3b3bada | 13844 | baseaddr = objfile->text_section_offset (); |
ff013f42 | 13845 | |
43039443 JK |
13846 | while (1) |
13847 | { | |
13848 | CORE_ADDR range_beginning, range_end; | |
13849 | ||
c8a7a66f | 13850 | range_beginning = cu->header.read_address (obfd, buffer, &dummy); |
43039443 | 13851 | buffer += addr_size; |
c8a7a66f | 13852 | range_end = cu->header.read_address (obfd, buffer, &dummy); |
43039443 JK |
13853 | buffer += addr_size; |
13854 | offset += 2 * addr_size; | |
13855 | ||
13856 | /* An end of list marker is a pair of zero addresses. */ | |
13857 | if (range_beginning == 0 && range_end == 0) | |
13858 | /* Found the end of list entry. */ | |
13859 | break; | |
13860 | ||
13861 | /* Each base address selection entry is a pair of 2 values. | |
13862 | The first is the largest possible address, the second is | |
13863 | the base address. Check for a base address here. */ | |
13864 | if ((range_beginning & mask) == mask) | |
13865 | { | |
28d2bfb9 AB |
13866 | /* If we found the largest possible address, then we already |
13867 | have the base address in range_end. */ | |
13868 | base = range_end; | |
43039443 JK |
13869 | continue; |
13870 | } | |
13871 | ||
2b24b6e4 | 13872 | if (!base.has_value ()) |
43039443 JK |
13873 | { |
13874 | /* We have no valid base address for the ranges | |
13875 | data. */ | |
b98664d3 | 13876 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
13877 | return 0; |
13878 | } | |
13879 | ||
9277c30c UW |
13880 | if (range_beginning > range_end) |
13881 | { | |
13882 | /* Inverted range entries are invalid. */ | |
b98664d3 | 13883 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
13884 | return 0; |
13885 | } | |
13886 | ||
13887 | /* Empty range entries have no effect. */ | |
13888 | if (range_beginning == range_end) | |
13889 | continue; | |
13890 | ||
2b24b6e4 TT |
13891 | range_beginning += *base; |
13892 | range_end += *base; | |
43039443 | 13893 | |
01093045 DE |
13894 | /* A not-uncommon case of bad debug info. |
13895 | Don't pollute the addrmap with bad data. */ | |
13896 | if (range_beginning + baseaddr == 0 | |
5e22e966 | 13897 | && !per_objfile->per_bfd->has_section_at_zero) |
01093045 | 13898 | { |
b98664d3 | 13899 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 13900 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
13901 | continue; |
13902 | } | |
13903 | ||
5f46c5a5 JK |
13904 | callback (range_beginning, range_end); |
13905 | } | |
13906 | ||
13907 | return 1; | |
13908 | } | |
13909 | ||
13910 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
13911 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
13912 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
13913 | ||
13914 | static int | |
13915 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
13916 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
891813be | 13917 | dwarf2_psymtab *ranges_pst) |
5f46c5a5 | 13918 | { |
5e22e966 | 13919 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 13920 | struct gdbarch *gdbarch = objfile->arch (); |
b3b3bada | 13921 | const CORE_ADDR baseaddr = objfile->text_section_offset (); |
5f46c5a5 JK |
13922 | int low_set = 0; |
13923 | CORE_ADDR low = 0; | |
13924 | CORE_ADDR high = 0; | |
13925 | int retval; | |
13926 | ||
13927 | retval = dwarf2_ranges_process (offset, cu, | |
13928 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
13929 | { | |
9277c30c | 13930 | if (ranges_pst != NULL) |
3e29f34a MR |
13931 | { |
13932 | CORE_ADDR lowpc; | |
13933 | CORE_ADDR highpc; | |
13934 | ||
79748972 TT |
13935 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
13936 | range_beginning + baseaddr) | |
13937 | - baseaddr); | |
13938 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
13939 | range_end + baseaddr) | |
13940 | - baseaddr); | |
d320c2b5 TT |
13941 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
13942 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 13943 | } |
ff013f42 | 13944 | |
43039443 JK |
13945 | /* FIXME: This is recording everything as a low-high |
13946 | segment of consecutive addresses. We should have a | |
13947 | data structure for discontiguous block ranges | |
13948 | instead. */ | |
13949 | if (! low_set) | |
13950 | { | |
13951 | low = range_beginning; | |
13952 | high = range_end; | |
13953 | low_set = 1; | |
13954 | } | |
13955 | else | |
13956 | { | |
13957 | if (range_beginning < low) | |
13958 | low = range_beginning; | |
13959 | if (range_end > high) | |
13960 | high = range_end; | |
13961 | } | |
5f46c5a5 JK |
13962 | }); |
13963 | if (!retval) | |
13964 | return 0; | |
43039443 JK |
13965 | |
13966 | if (! low_set) | |
13967 | /* If the first entry is an end-of-list marker, the range | |
13968 | describes an empty scope, i.e. no instructions. */ | |
13969 | return 0; | |
13970 | ||
13971 | if (low_return) | |
13972 | *low_return = low; | |
13973 | if (high_return) | |
13974 | *high_return = high; | |
13975 | return 1; | |
13976 | } | |
13977 | ||
3a2b436a JK |
13978 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
13979 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 13980 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 13981 | |
3a2b436a | 13982 | static enum pc_bounds_kind |
af34e669 | 13983 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 | 13984 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
891813be | 13985 | dwarf2_psymtab *pst) |
c906108c | 13986 | { |
5e22e966 | 13987 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
c906108c | 13988 | struct attribute *attr; |
91da1414 | 13989 | struct attribute *attr_high; |
af34e669 DJ |
13990 | CORE_ADDR low = 0; |
13991 | CORE_ADDR high = 0; | |
e385593e | 13992 | enum pc_bounds_kind ret; |
c906108c | 13993 | |
91da1414 MW |
13994 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
13995 | if (attr_high) | |
af34e669 | 13996 | { |
e142c38c | 13997 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 13998 | if (attr != nullptr) |
91da1414 | 13999 | { |
cd6c91b4 TT |
14000 | low = attr->value_as_address (); |
14001 | high = attr_high->value_as_address (); | |
14002 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) | |
31aa7e4e | 14003 | high += low; |
91da1414 | 14004 | } |
af34e669 DJ |
14005 | else |
14006 | /* Found high w/o low attribute. */ | |
e385593e | 14007 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14008 | |
14009 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14010 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14011 | } |
c906108c | 14012 | else |
af34e669 | 14013 | { |
e142c38c | 14014 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
14015 | if (attr != NULL) |
14016 | { | |
18a8505e | 14017 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
14018 | We take advantage of the fact that DW_AT_ranges does not appear |
14019 | in DW_TAG_compile_unit of DWO files. */ | |
14020 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
14021 | unsigned int ranges_offset = (DW_UNSND (attr) | |
14022 | + (need_ranges_base | |
14023 | ? cu->ranges_base | |
14024 | : 0)); | |
2e3cf129 | 14025 | |
af34e669 | 14026 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14027 | .debug_ranges section. */ |
2e3cf129 | 14028 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 14029 | return PC_BOUNDS_INVALID; |
43039443 | 14030 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14031 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14032 | } |
e385593e JK |
14033 | else |
14034 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14035 | } |
c906108c | 14036 | |
48fbe735 | 14037 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14038 | if (high <= low) |
e385593e | 14039 | return PC_BOUNDS_INVALID; |
c906108c SS |
14040 | |
14041 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14042 | eliminate duplicate copies of functions and vtables and such. | |
14043 | The linker will arbitrarily choose one and discard the others. | |
14044 | The AT_*_pc values for such functions refer to local labels in | |
14045 | these sections. If the section from that file was discarded, the | |
14046 | labels are not in the output, so the relocs get a value of 0. | |
14047 | If this is a discarded function, mark the pc bounds as invalid, | |
14048 | so that GDB will ignore it. */ | |
5989a64e | 14049 | if (low == 0 && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
e385593e | 14050 | return PC_BOUNDS_INVALID; |
c906108c SS |
14051 | |
14052 | *lowpc = low; | |
96408a79 SA |
14053 | if (highpc) |
14054 | *highpc = high; | |
af34e669 | 14055 | return ret; |
c906108c SS |
14056 | } |
14057 | ||
b084d499 JB |
14058 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14059 | its low and high PC addresses. Do nothing if these addresses could not | |
14060 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14061 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14062 | ||
14063 | static void | |
14064 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
14065 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14066 | struct dwarf2_cu *cu) | |
14067 | { | |
14068 | CORE_ADDR low, high; | |
14069 | struct die_info *child = die->child; | |
14070 | ||
e385593e | 14071 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14072 | { |
325fac50 PA |
14073 | *lowpc = std::min (*lowpc, low); |
14074 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14075 | } |
14076 | ||
14077 | /* If the language does not allow nested subprograms (either inside | |
14078 | subprograms or lexical blocks), we're done. */ | |
14079 | if (cu->language != language_ada) | |
14080 | return; | |
6e70227d | 14081 | |
b084d499 JB |
14082 | /* Check all the children of the given DIE. If it contains nested |
14083 | subprograms, then check their pc bounds. Likewise, we need to | |
14084 | check lexical blocks as well, as they may also contain subprogram | |
14085 | definitions. */ | |
14086 | while (child && child->tag) | |
14087 | { | |
14088 | if (child->tag == DW_TAG_subprogram | |
14089 | || child->tag == DW_TAG_lexical_block) | |
14090 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
436c571c | 14091 | child = child->sibling; |
b084d499 JB |
14092 | } |
14093 | } | |
14094 | ||
fae299cd DC |
14095 | /* Get the low and high pc's represented by the scope DIE, and store |
14096 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14097 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14098 | ||
14099 | static void | |
14100 | get_scope_pc_bounds (struct die_info *die, | |
14101 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14102 | struct dwarf2_cu *cu) | |
14103 | { | |
14104 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14105 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14106 | CORE_ADDR current_low, current_high; | |
14107 | ||
3a2b436a | 14108 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14109 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14110 | { |
14111 | best_low = current_low; | |
14112 | best_high = current_high; | |
14113 | } | |
14114 | else | |
14115 | { | |
14116 | struct die_info *child = die->child; | |
14117 | ||
14118 | while (child && child->tag) | |
14119 | { | |
14120 | switch (child->tag) { | |
14121 | case DW_TAG_subprogram: | |
b084d499 | 14122 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14123 | break; |
14124 | case DW_TAG_namespace: | |
f55ee35c | 14125 | case DW_TAG_module: |
fae299cd DC |
14126 | /* FIXME: carlton/2004-01-16: Should we do this for |
14127 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14128 | that current GCC's always emit the DIEs corresponding | |
14129 | to definitions of methods of classes as children of a | |
14130 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14131 | the DIEs giving the declarations, which could be | |
14132 | anywhere). But I don't see any reason why the | |
14133 | standards says that they have to be there. */ | |
14134 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14135 | ||
14136 | if (current_low != ((CORE_ADDR) -1)) | |
14137 | { | |
325fac50 PA |
14138 | best_low = std::min (best_low, current_low); |
14139 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14140 | } |
14141 | break; | |
14142 | default: | |
0963b4bd | 14143 | /* Ignore. */ |
fae299cd DC |
14144 | break; |
14145 | } | |
14146 | ||
436c571c | 14147 | child = child->sibling; |
fae299cd DC |
14148 | } |
14149 | } | |
14150 | ||
14151 | *lowpc = best_low; | |
14152 | *highpc = best_high; | |
14153 | } | |
14154 | ||
801e3a5b JB |
14155 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14156 | in DIE. */ | |
380bca97 | 14157 | |
801e3a5b JB |
14158 | static void |
14159 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
14160 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
14161 | { | |
5e22e966 | 14162 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14163 | struct gdbarch *gdbarch = objfile->arch (); |
801e3a5b | 14164 | struct attribute *attr; |
91da1414 | 14165 | struct attribute *attr_high; |
801e3a5b | 14166 | |
91da1414 MW |
14167 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14168 | if (attr_high) | |
801e3a5b | 14169 | { |
801e3a5b | 14170 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 14171 | if (attr != nullptr) |
801e3a5b | 14172 | { |
cd6c91b4 TT |
14173 | CORE_ADDR low = attr->value_as_address (); |
14174 | CORE_ADDR high = attr_high->value_as_address (); | |
31aa7e4e | 14175 | |
cd6c91b4 | 14176 | if (cu->header.version >= 4 && attr_high->form_is_constant ()) |
31aa7e4e | 14177 | high += low; |
9a619af0 | 14178 | |
3e29f34a MR |
14179 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14180 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14181 | cu->get_builder ()->record_block_range (block, low, high - 1); |
801e3a5b JB |
14182 | } |
14183 | } | |
14184 | ||
14185 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
435d3d88 | 14186 | if (attr != nullptr) |
801e3a5b | 14187 | { |
18a8505e | 14188 | /* DW_AT_rnglists_base does not apply to DIEs from the DWO skeleton. |
ab435259 DE |
14189 | We take advantage of the fact that DW_AT_ranges does not appear |
14190 | in DW_TAG_compile_unit of DWO files. */ | |
14191 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
14192 | |
14193 | /* The value of the DW_AT_ranges attribute is the offset of the | |
14194 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
14195 | unsigned long offset = (DW_UNSND (attr) |
14196 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 14197 | |
2d5f09ec | 14198 | std::vector<blockrange> blockvec; |
5f46c5a5 JK |
14199 | dwarf2_ranges_process (offset, cu, |
14200 | [&] (CORE_ADDR start, CORE_ADDR end) | |
14201 | { | |
58fdfd2c JK |
14202 | start += baseaddr; |
14203 | end += baseaddr; | |
5f46c5a5 JK |
14204 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14205 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14206 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14207 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14208 | }); |
2d5f09ec KB |
14209 | |
14210 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14211 | } |
14212 | } | |
14213 | ||
685b1105 JK |
14214 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14215 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14216 | |
685b1105 JK |
14217 | static void |
14218 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14219 | { |
38360086 | 14220 | int major, minor; |
60d5a603 JK |
14221 | |
14222 | if (cu->producer == NULL) | |
14223 | { | |
14224 | /* For unknown compilers expect their behavior is DWARF version | |
14225 | compliant. | |
14226 | ||
14227 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14228 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14229 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14230 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14231 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14232 | } |
b1ffba5a | 14233 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14234 | { |
38360086 MW |
14235 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14236 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14237 | } |
5230b05a | 14238 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14239 | { |
14240 | cu->producer_is_icc = true; | |
14241 | cu->producer_is_icc_lt_14 = major < 14; | |
14242 | } | |
c258c396 JD |
14243 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14244 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14245 | else |
14246 | { | |
14247 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14248 | compliant. */ | |
60d5a603 JK |
14249 | } |
14250 | ||
9068261f | 14251 | cu->checked_producer = true; |
685b1105 | 14252 | } |
ba919b58 | 14253 | |
685b1105 JK |
14254 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14255 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14256 | during 4.6.0 experimental. */ | |
14257 | ||
9068261f | 14258 | static bool |
685b1105 JK |
14259 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14260 | { | |
14261 | if (!cu->checked_producer) | |
14262 | check_producer (cu); | |
14263 | ||
14264 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14265 | } |
14266 | ||
c258c396 JD |
14267 | |
14268 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14269 | with incorrect is_stmt attributes. */ | |
14270 | ||
14271 | static bool | |
14272 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14273 | { | |
14274 | if (!cu->checked_producer) | |
14275 | check_producer (cu); | |
14276 | ||
14277 | return cu->producer_is_codewarrior; | |
14278 | } | |
14279 | ||
405feb71 | 14280 | /* Return the default accessibility type if it is not overridden by |
60d5a603 JK |
14281 | DW_AT_accessibility. */ |
14282 | ||
14283 | static enum dwarf_access_attribute | |
14284 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14285 | { | |
14286 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14287 | { | |
14288 | /* The default DWARF 2 accessibility for members is public, the default | |
14289 | accessibility for inheritance is private. */ | |
14290 | ||
14291 | if (die->tag != DW_TAG_inheritance) | |
14292 | return DW_ACCESS_public; | |
14293 | else | |
14294 | return DW_ACCESS_private; | |
14295 | } | |
14296 | else | |
14297 | { | |
14298 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14299 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14300 | depends on the container kind. */ | |
14301 | ||
14302 | if (die->parent->tag == DW_TAG_class_type) | |
14303 | return DW_ACCESS_private; | |
14304 | else | |
14305 | return DW_ACCESS_public; | |
14306 | } | |
14307 | } | |
14308 | ||
74ac6d43 TT |
14309 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14310 | offset. If the attribute was not found return 0, otherwise return | |
14311 | 1. If it was found but could not properly be handled, set *OFFSET | |
14312 | to 0. */ | |
14313 | ||
14314 | static int | |
14315 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14316 | LONGEST *offset) | |
14317 | { | |
14318 | struct attribute *attr; | |
14319 | ||
14320 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14321 | if (attr != NULL) | |
14322 | { | |
14323 | *offset = 0; | |
14324 | ||
14325 | /* Note that we do not check for a section offset first here. | |
14326 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14327 | so if we see it, we can assume that a constant form is really | |
14328 | a constant and not a section offset. */ | |
cd6c91b4 | 14329 | if (attr->form_is_constant ()) |
0826b30a | 14330 | *offset = attr->constant_value (0); |
cd6c91b4 | 14331 | else if (attr->form_is_section_offset ()) |
74ac6d43 | 14332 | dwarf2_complex_location_expr_complaint (); |
4fc6c0d5 | 14333 | else if (attr->form_is_block ()) |
74ac6d43 TT |
14334 | *offset = decode_locdesc (DW_BLOCK (attr), cu); |
14335 | else | |
14336 | dwarf2_complex_location_expr_complaint (); | |
14337 | ||
14338 | return 1; | |
14339 | } | |
14340 | ||
14341 | return 0; | |
14342 | } | |
14343 | ||
7d79de9a TT |
14344 | /* Look for DW_AT_data_member_location and store the results in FIELD. */ |
14345 | ||
14346 | static void | |
14347 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14348 | struct field *field) | |
14349 | { | |
14350 | struct attribute *attr; | |
14351 | ||
14352 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14353 | if (attr != NULL) | |
14354 | { | |
14355 | if (attr->form_is_constant ()) | |
14356 | { | |
14357 | LONGEST offset = attr->constant_value (0); | |
14358 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14359 | } | |
14360 | else if (attr->form_is_section_offset ()) | |
14361 | dwarf2_complex_location_expr_complaint (); | |
14362 | else if (attr->form_is_block ()) | |
14363 | { | |
14364 | bool handled; | |
14365 | CORE_ADDR offset = decode_locdesc (DW_BLOCK (attr), cu, &handled); | |
14366 | if (handled) | |
14367 | SET_FIELD_BITPOS (*field, offset * bits_per_byte); | |
14368 | else | |
14369 | { | |
5e22e966 SM |
14370 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
14371 | struct objfile *objfile = per_objfile->objfile; | |
7d79de9a TT |
14372 | struct dwarf2_locexpr_baton *dlbaton |
14373 | = XOBNEW (&objfile->objfile_obstack, | |
14374 | struct dwarf2_locexpr_baton); | |
14375 | dlbaton->data = DW_BLOCK (attr)->data; | |
14376 | dlbaton->size = DW_BLOCK (attr)->size; | |
14377 | /* When using this baton, we want to compute the address | |
14378 | of the field, not the value. This is why | |
14379 | is_reference is set to false here. */ | |
14380 | dlbaton->is_reference = false; | |
5e22e966 | 14381 | dlbaton->per_objfile = per_objfile; |
7d79de9a TT |
14382 | dlbaton->per_cu = cu->per_cu; |
14383 | ||
14384 | SET_FIELD_DWARF_BLOCK (*field, dlbaton); | |
14385 | } | |
14386 | } | |
14387 | else | |
14388 | dwarf2_complex_location_expr_complaint (); | |
14389 | } | |
14390 | } | |
14391 | ||
c906108c SS |
14392 | /* Add an aggregate field to the field list. */ |
14393 | ||
14394 | static void | |
107d2387 | 14395 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14396 | struct dwarf2_cu *cu) |
6e70227d | 14397 | { |
5e22e966 | 14398 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 14399 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
14400 | struct nextfield *new_field; |
14401 | struct attribute *attr; | |
14402 | struct field *fp; | |
15d034d0 | 14403 | const char *fieldname = ""; |
c906108c | 14404 | |
7d0ccb61 DJ |
14405 | if (die->tag == DW_TAG_inheritance) |
14406 | { | |
be2daae6 TT |
14407 | fip->baseclasses.emplace_back (); |
14408 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
14409 | } |
14410 | else | |
14411 | { | |
be2daae6 TT |
14412 | fip->fields.emplace_back (); |
14413 | new_field = &fip->fields.back (); | |
7d0ccb61 | 14414 | } |
be2daae6 | 14415 | |
9c6a1327 TT |
14416 | new_field->offset = die->sect_off; |
14417 | ||
e142c38c | 14418 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 14419 | if (attr != nullptr) |
c906108c | 14420 | new_field->accessibility = DW_UNSND (attr); |
60d5a603 JK |
14421 | else |
14422 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
14423 | if (new_field->accessibility != DW_ACCESS_public) |
14424 | fip->non_public_fields = 1; | |
60d5a603 | 14425 | |
e142c38c | 14426 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
435d3d88 | 14427 | if (attr != nullptr) |
c906108c | 14428 | new_field->virtuality = DW_UNSND (attr); |
60d5a603 JK |
14429 | else |
14430 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
14431 | |
14432 | fp = &new_field->field; | |
a9a9bd0f | 14433 | |
e142c38c | 14434 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 14435 | { |
a9a9bd0f | 14436 | /* Data member other than a C++ static data member. */ |
6e70227d | 14437 | |
c906108c | 14438 | /* Get type of field. */ |
e7c27a73 | 14439 | fp->type = die_type (die, cu); |
c906108c | 14440 | |
d6a843b5 | 14441 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 14442 | |
c906108c | 14443 | /* Get bit size of field (zero if none). */ |
e142c38c | 14444 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
435d3d88 | 14445 | if (attr != nullptr) |
c906108c SS |
14446 | { |
14447 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
14448 | } | |
14449 | else | |
14450 | { | |
14451 | FIELD_BITSIZE (*fp) = 0; | |
14452 | } | |
14453 | ||
14454 | /* Get bit offset of field. */ | |
7d79de9a | 14455 | handle_data_member_location (die, cu, fp); |
e142c38c | 14456 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
435d3d88 | 14457 | if (attr != nullptr) |
c906108c | 14458 | { |
d5a22e77 | 14459 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
c906108c SS |
14460 | { |
14461 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
14462 | additional bit offset from the MSB of the containing |
14463 | anonymous object to the MSB of the field. We don't | |
14464 | have to do anything special since we don't need to | |
14465 | know the size of the anonymous object. */ | |
f41f5e61 | 14466 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
14467 | } |
14468 | else | |
14469 | { | |
14470 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
14471 | MSB of the anonymous object, subtract off the number of |
14472 | bits from the MSB of the field to the MSB of the | |
14473 | object, and then subtract off the number of bits of | |
14474 | the field itself. The result is the bit offset of | |
14475 | the LSB of the field. */ | |
c906108c SS |
14476 | int anonymous_size; |
14477 | int bit_offset = DW_UNSND (attr); | |
14478 | ||
e142c38c | 14479 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 14480 | if (attr != nullptr) |
c906108c SS |
14481 | { |
14482 | /* The size of the anonymous object containing | |
14483 | the bit field is explicit, so use the | |
14484 | indicated size (in bytes). */ | |
14485 | anonymous_size = DW_UNSND (attr); | |
14486 | } | |
14487 | else | |
14488 | { | |
14489 | /* The size of the anonymous object containing | |
14490 | the bit field must be inferred from the type | |
14491 | attribute of the data member containing the | |
14492 | bit field. */ | |
14493 | anonymous_size = TYPE_LENGTH (fp->type); | |
14494 | } | |
f41f5e61 PA |
14495 | SET_FIELD_BITPOS (*fp, |
14496 | (FIELD_BITPOS (*fp) | |
14497 | + anonymous_size * bits_per_byte | |
14498 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
14499 | } |
14500 | } | |
da5b30da AA |
14501 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
14502 | if (attr != NULL) | |
14503 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
0826b30a | 14504 | + attr->constant_value (0))); |
c906108c SS |
14505 | |
14506 | /* Get name of field. */ | |
39cbfefa DJ |
14507 | fieldname = dwarf2_name (die, cu); |
14508 | if (fieldname == NULL) | |
14509 | fieldname = ""; | |
d8151005 DJ |
14510 | |
14511 | /* The name is already allocated along with this objfile, so we don't | |
14512 | need to duplicate it for the type. */ | |
14513 | fp->name = fieldname; | |
c906108c SS |
14514 | |
14515 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 14516 | pointer or virtual base class pointer) to private. */ |
e142c38c | 14517 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 14518 | { |
d48cc9dd | 14519 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
14520 | new_field->accessibility = DW_ACCESS_private; |
14521 | fip->non_public_fields = 1; | |
14522 | } | |
14523 | } | |
a9a9bd0f | 14524 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 14525 | { |
a9a9bd0f DC |
14526 | /* C++ static member. */ |
14527 | ||
14528 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
14529 | is a declaration, but all versions of G++ as of this writing | |
14530 | (so through at least 3.2.1) incorrectly generate | |
14531 | DW_TAG_variable tags. */ | |
6e70227d | 14532 | |
ff355380 | 14533 | const char *physname; |
c906108c | 14534 | |
a9a9bd0f | 14535 | /* Get name of field. */ |
39cbfefa DJ |
14536 | fieldname = dwarf2_name (die, cu); |
14537 | if (fieldname == NULL) | |
c906108c SS |
14538 | return; |
14539 | ||
254e6b9e | 14540 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
14541 | if (attr |
14542 | /* Only create a symbol if this is an external value. | |
14543 | new_symbol checks this and puts the value in the global symbol | |
14544 | table, which we want. If it is not external, new_symbol | |
14545 | will try to put the value in cu->list_in_scope which is wrong. */ | |
14546 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
14547 | { |
14548 | /* A static const member, not much different than an enum as far as | |
14549 | we're concerned, except that we can support more types. */ | |
14550 | new_symbol (die, NULL, cu); | |
14551 | } | |
14552 | ||
2df3850c | 14553 | /* Get physical name. */ |
ff355380 | 14554 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 14555 | |
d8151005 DJ |
14556 | /* The name is already allocated along with this objfile, so we don't |
14557 | need to duplicate it for the type. */ | |
14558 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 14559 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 14560 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
14561 | } |
14562 | else if (die->tag == DW_TAG_inheritance) | |
14563 | { | |
74ac6d43 | 14564 | /* C++ base class field. */ |
7d79de9a | 14565 | handle_data_member_location (die, cu, fp); |
c906108c | 14566 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 14567 | FIELD_TYPE (*fp) = die_type (die, cu); |
7d93a1e0 | 14568 | FIELD_NAME (*fp) = fp->type->name (); |
c906108c | 14569 | } |
2ddeaf8a TT |
14570 | else |
14571 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
14572 | } |
14573 | ||
883fd55a KS |
14574 | /* Can the type given by DIE define another type? */ |
14575 | ||
14576 | static bool | |
14577 | type_can_define_types (const struct die_info *die) | |
14578 | { | |
14579 | switch (die->tag) | |
14580 | { | |
14581 | case DW_TAG_typedef: | |
14582 | case DW_TAG_class_type: | |
14583 | case DW_TAG_structure_type: | |
14584 | case DW_TAG_union_type: | |
14585 | case DW_TAG_enumeration_type: | |
14586 | return true; | |
14587 | ||
14588 | default: | |
14589 | return false; | |
14590 | } | |
14591 | } | |
14592 | ||
14593 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
14594 | |
14595 | static void | |
883fd55a KS |
14596 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
14597 | struct dwarf2_cu *cu) | |
6e70227d | 14598 | { |
be2daae6 TT |
14599 | struct decl_field fp; |
14600 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 14601 | |
883fd55a | 14602 | gdb_assert (type_can_define_types (die)); |
98751a41 | 14603 | |
883fd55a | 14604 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
14605 | fp.name = dwarf2_name (die, cu); |
14606 | fp.type = read_type_die (die, cu); | |
98751a41 | 14607 | |
c191a687 KS |
14608 | /* Save accessibility. */ |
14609 | enum dwarf_access_attribute accessibility; | |
14610 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
14611 | if (attr != NULL) | |
14612 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
14613 | else | |
14614 | accessibility = dwarf2_default_access_attribute (die, cu); | |
14615 | switch (accessibility) | |
14616 | { | |
14617 | case DW_ACCESS_public: | |
14618 | /* The assumed value if neither private nor protected. */ | |
14619 | break; | |
14620 | case DW_ACCESS_private: | |
be2daae6 | 14621 | fp.is_private = 1; |
c191a687 KS |
14622 | break; |
14623 | case DW_ACCESS_protected: | |
be2daae6 | 14624 | fp.is_protected = 1; |
c191a687 KS |
14625 | break; |
14626 | default: | |
b98664d3 | 14627 | complaint (_("Unhandled DW_AT_accessibility value (%x)"), accessibility); |
c191a687 KS |
14628 | } |
14629 | ||
883fd55a | 14630 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 14631 | fip->typedef_field_list.push_back (fp); |
883fd55a | 14632 | else |
be2daae6 | 14633 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
14634 | } |
14635 | ||
9c6a1327 TT |
14636 | /* A convenience typedef that's used when finding the discriminant |
14637 | field for a variant part. */ | |
1b95cdb7 SM |
14638 | typedef std::unordered_map<sect_offset, int, gdb::hash_enum<sect_offset>> |
14639 | offset_map_type; | |
9c6a1327 TT |
14640 | |
14641 | /* Compute the discriminant range for a given variant. OBSTACK is | |
14642 | where the results will be stored. VARIANT is the variant to | |
14643 | process. IS_UNSIGNED indicates whether the discriminant is signed | |
14644 | or unsigned. */ | |
14645 | ||
14646 | static const gdb::array_view<discriminant_range> | |
14647 | convert_variant_range (struct obstack *obstack, const variant_field &variant, | |
14648 | bool is_unsigned) | |
14649 | { | |
14650 | std::vector<discriminant_range> ranges; | |
14651 | ||
14652 | if (variant.default_branch) | |
14653 | return {}; | |
14654 | ||
14655 | if (variant.discr_list_data == nullptr) | |
14656 | { | |
14657 | discriminant_range r | |
14658 | = {variant.discriminant_value, variant.discriminant_value}; | |
14659 | ranges.push_back (r); | |
14660 | } | |
14661 | else | |
14662 | { | |
14663 | gdb::array_view<const gdb_byte> data (variant.discr_list_data->data, | |
14664 | variant.discr_list_data->size); | |
14665 | while (!data.empty ()) | |
14666 | { | |
14667 | if (data[0] != DW_DSC_range && data[0] != DW_DSC_label) | |
14668 | { | |
14669 | complaint (_("invalid discriminant marker: %d"), data[0]); | |
14670 | break; | |
14671 | } | |
14672 | bool is_range = data[0] == DW_DSC_range; | |
14673 | data = data.slice (1); | |
14674 | ||
14675 | ULONGEST low, high; | |
14676 | unsigned int bytes_read; | |
14677 | ||
14678 | if (data.empty ()) | |
14679 | { | |
14680 | complaint (_("DW_AT_discr_list missing low value")); | |
14681 | break; | |
14682 | } | |
14683 | if (is_unsigned) | |
14684 | low = read_unsigned_leb128 (nullptr, data.data (), &bytes_read); | |
14685 | else | |
14686 | low = (ULONGEST) read_signed_leb128 (nullptr, data.data (), | |
14687 | &bytes_read); | |
14688 | data = data.slice (bytes_read); | |
14689 | ||
14690 | if (is_range) | |
14691 | { | |
14692 | if (data.empty ()) | |
14693 | { | |
14694 | complaint (_("DW_AT_discr_list missing high value")); | |
14695 | break; | |
14696 | } | |
14697 | if (is_unsigned) | |
14698 | high = read_unsigned_leb128 (nullptr, data.data (), | |
14699 | &bytes_read); | |
14700 | else | |
14701 | high = (LONGEST) read_signed_leb128 (nullptr, data.data (), | |
14702 | &bytes_read); | |
14703 | data = data.slice (bytes_read); | |
14704 | } | |
14705 | else | |
14706 | high = low; | |
14707 | ||
14708 | ranges.push_back ({ low, high }); | |
14709 | } | |
14710 | } | |
14711 | ||
14712 | discriminant_range *result = XOBNEWVEC (obstack, discriminant_range, | |
14713 | ranges.size ()); | |
14714 | std::copy (ranges.begin (), ranges.end (), result); | |
14715 | return gdb::array_view<discriminant_range> (result, ranges.size ()); | |
14716 | } | |
14717 | ||
14718 | static const gdb::array_view<variant_part> create_variant_parts | |
14719 | (struct obstack *obstack, | |
14720 | const offset_map_type &offset_map, | |
14721 | struct field_info *fi, | |
14722 | const std::vector<variant_part_builder> &variant_parts); | |
14723 | ||
14724 | /* Fill in a "struct variant" for a given variant field. RESULT is | |
14725 | the variant to fill in. OBSTACK is where any needed allocations | |
14726 | will be done. OFFSET_MAP holds the mapping from section offsets to | |
14727 | fields for the type. FI describes the fields of the type we're | |
14728 | processing. FIELD is the variant field we're converting. */ | |
14729 | ||
14730 | static void | |
14731 | create_one_variant (variant &result, struct obstack *obstack, | |
14732 | const offset_map_type &offset_map, | |
14733 | struct field_info *fi, const variant_field &field) | |
14734 | { | |
14735 | result.discriminants = convert_variant_range (obstack, field, false); | |
14736 | result.first_field = field.first_field + fi->baseclasses.size (); | |
14737 | result.last_field = field.last_field + fi->baseclasses.size (); | |
14738 | result.parts = create_variant_parts (obstack, offset_map, fi, | |
14739 | field.variant_parts); | |
14740 | } | |
14741 | ||
14742 | /* Fill in a "struct variant_part" for a given variant part. RESULT | |
14743 | is the variant part to fill in. OBSTACK is where any needed | |
14744 | allocations will be done. OFFSET_MAP holds the mapping from | |
14745 | section offsets to fields for the type. FI describes the fields of | |
14746 | the type we're processing. BUILDER is the variant part to be | |
14747 | converted. */ | |
14748 | ||
14749 | static void | |
14750 | create_one_variant_part (variant_part &result, | |
14751 | struct obstack *obstack, | |
14752 | const offset_map_type &offset_map, | |
14753 | struct field_info *fi, | |
14754 | const variant_part_builder &builder) | |
14755 | { | |
14756 | auto iter = offset_map.find (builder.discriminant_offset); | |
14757 | if (iter == offset_map.end ()) | |
14758 | { | |
14759 | result.discriminant_index = -1; | |
14760 | /* Doesn't matter. */ | |
14761 | result.is_unsigned = false; | |
14762 | } | |
14763 | else | |
14764 | { | |
14765 | result.discriminant_index = iter->second; | |
14766 | result.is_unsigned | |
14767 | = TYPE_UNSIGNED (FIELD_TYPE | |
14768 | (fi->fields[result.discriminant_index].field)); | |
14769 | } | |
14770 | ||
14771 | size_t n = builder.variants.size (); | |
14772 | variant *output = new (obstack) variant[n]; | |
14773 | for (size_t i = 0; i < n; ++i) | |
14774 | create_one_variant (output[i], obstack, offset_map, fi, | |
14775 | builder.variants[i]); | |
14776 | ||
14777 | result.variants = gdb::array_view<variant> (output, n); | |
14778 | } | |
14779 | ||
14780 | /* Create a vector of variant parts that can be attached to a type. | |
14781 | OBSTACK is where any needed allocations will be done. OFFSET_MAP | |
14782 | holds the mapping from section offsets to fields for the type. FI | |
14783 | describes the fields of the type we're processing. VARIANT_PARTS | |
14784 | is the vector to convert. */ | |
14785 | ||
14786 | static const gdb::array_view<variant_part> | |
14787 | create_variant_parts (struct obstack *obstack, | |
14788 | const offset_map_type &offset_map, | |
14789 | struct field_info *fi, | |
14790 | const std::vector<variant_part_builder> &variant_parts) | |
14791 | { | |
14792 | if (variant_parts.empty ()) | |
14793 | return {}; | |
14794 | ||
14795 | size_t n = variant_parts.size (); | |
14796 | variant_part *result = new (obstack) variant_part[n]; | |
14797 | for (size_t i = 0; i < n; ++i) | |
14798 | create_one_variant_part (result[i], obstack, offset_map, fi, | |
14799 | variant_parts[i]); | |
14800 | ||
14801 | return gdb::array_view<variant_part> (result, n); | |
14802 | } | |
14803 | ||
14804 | /* Compute the variant part vector for FIP, attaching it to TYPE when | |
14805 | done. */ | |
14806 | ||
14807 | static void | |
14808 | add_variant_property (struct field_info *fip, struct type *type, | |
14809 | struct dwarf2_cu *cu) | |
14810 | { | |
14811 | /* Map section offsets of fields to their field index. Note the | |
14812 | field index here does not take the number of baseclasses into | |
14813 | account. */ | |
14814 | offset_map_type offset_map; | |
14815 | for (int i = 0; i < fip->fields.size (); ++i) | |
14816 | offset_map[fip->fields[i].offset] = i; | |
14817 | ||
5e22e966 | 14818 | struct objfile *objfile = cu->per_objfile->objfile; |
9c6a1327 TT |
14819 | gdb::array_view<variant_part> parts |
14820 | = create_variant_parts (&objfile->objfile_obstack, offset_map, fip, | |
14821 | fip->variant_parts); | |
14822 | ||
14823 | struct dynamic_prop prop; | |
14824 | prop.kind = PROP_VARIANT_PARTS; | |
14825 | prop.data.variant_parts | |
14826 | = ((gdb::array_view<variant_part> *) | |
14827 | obstack_copy (&objfile->objfile_obstack, &parts, sizeof (parts))); | |
14828 | ||
5c54719c | 14829 | type->add_dyn_prop (DYN_PROP_VARIANT_PARTS, prop); |
9c6a1327 TT |
14830 | } |
14831 | ||
c906108c SS |
14832 | /* Create the vector of fields, and attach it to the type. */ |
14833 | ||
14834 | static void | |
fba45db2 | 14835 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 14836 | struct dwarf2_cu *cu) |
c906108c | 14837 | { |
317f7127 | 14838 | int nfields = fip->nfields (); |
c906108c SS |
14839 | |
14840 | /* Record the field count, allocate space for the array of fields, | |
14841 | and create blank accessibility bitfields if necessary. */ | |
5e33d5f4 | 14842 | type->set_num_fields (nfields); |
3cabb6b0 SM |
14843 | type->set_fields |
14844 | ((struct field *) TYPE_ZALLOC (type, sizeof (struct field) * nfields)); | |
c906108c | 14845 | |
b4ba55a1 | 14846 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
14847 | { |
14848 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
14849 | ||
14850 | TYPE_FIELD_PRIVATE_BITS (type) = | |
14851 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14852 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
14853 | ||
14854 | TYPE_FIELD_PROTECTED_BITS (type) = | |
14855 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14856 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
14857 | ||
774b6a14 TT |
14858 | TYPE_FIELD_IGNORE_BITS (type) = |
14859 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
14860 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
14861 | } |
14862 | ||
14863 | /* If the type has baseclasses, allocate and clear a bit vector for | |
14864 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 14865 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 14866 | { |
be2daae6 | 14867 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 14868 | unsigned char *pointer; |
c906108c SS |
14869 | |
14870 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 14871 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 14872 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
14873 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
14874 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
14875 | } |
14876 | ||
9c6a1327 TT |
14877 | if (!fip->variant_parts.empty ()) |
14878 | add_variant_property (fip, type, cu); | |
2ddeaf8a | 14879 | |
be2daae6 TT |
14880 | /* Copy the saved-up fields into the field vector. */ |
14881 | for (int i = 0; i < nfields; ++i) | |
c906108c | 14882 | { |
be2daae6 TT |
14883 | struct nextfield &field |
14884 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
14885 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 14886 | |
ceacbf6e | 14887 | type->field (i) = field.field; |
be2daae6 | 14888 | switch (field.accessibility) |
c906108c | 14889 | { |
c5aa993b | 14890 | case DW_ACCESS_private: |
b4ba55a1 | 14891 | if (cu->language != language_ada) |
be2daae6 | 14892 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 14893 | break; |
c906108c | 14894 | |
c5aa993b | 14895 | case DW_ACCESS_protected: |
b4ba55a1 | 14896 | if (cu->language != language_ada) |
be2daae6 | 14897 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 14898 | break; |
c906108c | 14899 | |
c5aa993b JM |
14900 | case DW_ACCESS_public: |
14901 | break; | |
c906108c | 14902 | |
c5aa993b JM |
14903 | default: |
14904 | /* Unknown accessibility. Complain and treat it as public. */ | |
14905 | { | |
b98664d3 | 14906 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 14907 | field.accessibility); |
c5aa993b JM |
14908 | } |
14909 | break; | |
c906108c | 14910 | } |
be2daae6 | 14911 | if (i < fip->baseclasses.size ()) |
c906108c | 14912 | { |
be2daae6 | 14913 | switch (field.virtuality) |
c906108c | 14914 | { |
c5aa993b JM |
14915 | case DW_VIRTUALITY_virtual: |
14916 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 14917 | if (cu->language == language_ada) |
a73c6dcd | 14918 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 14919 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 14920 | break; |
c906108c SS |
14921 | } |
14922 | } | |
c906108c SS |
14923 | } |
14924 | } | |
14925 | ||
7d27a96d TT |
14926 | /* Return true if this member function is a constructor, false |
14927 | otherwise. */ | |
14928 | ||
14929 | static int | |
14930 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
14931 | { | |
14932 | const char *fieldname; | |
fe978cb0 | 14933 | const char *type_name; |
7d27a96d TT |
14934 | int len; |
14935 | ||
14936 | if (die->parent == NULL) | |
14937 | return 0; | |
14938 | ||
14939 | if (die->parent->tag != DW_TAG_structure_type | |
14940 | && die->parent->tag != DW_TAG_union_type | |
14941 | && die->parent->tag != DW_TAG_class_type) | |
14942 | return 0; | |
14943 | ||
14944 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
14945 | type_name = dwarf2_name (die->parent, cu); |
14946 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
14947 | return 0; |
14948 | ||
14949 | len = strlen (fieldname); | |
fe978cb0 PA |
14950 | return (strncmp (fieldname, type_name, len) == 0 |
14951 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
14952 | } |
14953 | ||
e35000a7 TBA |
14954 | /* Check if the given VALUE is a recognized enum |
14955 | dwarf_defaulted_attribute constant according to DWARF5 spec, | |
14956 | Table 7.24. */ | |
14957 | ||
14958 | static bool | |
14959 | is_valid_DW_AT_defaulted (ULONGEST value) | |
14960 | { | |
14961 | switch (value) | |
14962 | { | |
14963 | case DW_DEFAULTED_no: | |
14964 | case DW_DEFAULTED_in_class: | |
14965 | case DW_DEFAULTED_out_of_class: | |
14966 | return true; | |
14967 | } | |
14968 | ||
3142e908 | 14969 | complaint (_("unrecognized DW_AT_defaulted value (%s)"), pulongest (value)); |
e35000a7 TBA |
14970 | return false; |
14971 | } | |
14972 | ||
c906108c SS |
14973 | /* Add a member function to the proper fieldlist. */ |
14974 | ||
14975 | static void | |
107d2387 | 14976 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14977 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 14978 | { |
5e22e966 | 14979 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 14980 | struct attribute *attr; |
c906108c | 14981 | int i; |
be2daae6 | 14982 | struct fnfieldlist *flp = nullptr; |
c906108c | 14983 | struct fn_field *fnp; |
15d034d0 | 14984 | const char *fieldname; |
f792889a | 14985 | struct type *this_type; |
60d5a603 | 14986 | enum dwarf_access_attribute accessibility; |
c906108c | 14987 | |
b4ba55a1 | 14988 | if (cu->language == language_ada) |
a73c6dcd | 14989 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 14990 | |
2df3850c | 14991 | /* Get name of member function. */ |
39cbfefa DJ |
14992 | fieldname = dwarf2_name (die, cu); |
14993 | if (fieldname == NULL) | |
2df3850c | 14994 | return; |
c906108c | 14995 | |
c906108c | 14996 | /* Look up member function name in fieldlist. */ |
be2daae6 | 14997 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 14998 | { |
27bfe10e | 14999 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15000 | { |
15001 | flp = &fip->fnfieldlists[i]; | |
15002 | break; | |
15003 | } | |
c906108c SS |
15004 | } |
15005 | ||
be2daae6 TT |
15006 | /* Create a new fnfieldlist if necessary. */ |
15007 | if (flp == nullptr) | |
c906108c | 15008 | { |
be2daae6 TT |
15009 | fip->fnfieldlists.emplace_back (); |
15010 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15011 | flp->name = fieldname; |
be2daae6 | 15012 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15013 | } |
15014 | ||
be2daae6 TT |
15015 | /* Create a new member function field and add it to the vector of |
15016 | fnfieldlists. */ | |
15017 | flp->fnfields.emplace_back (); | |
15018 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15019 | |
15020 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15021 | if (cu->language == language_cplus) |
be2daae6 TT |
15022 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15023 | die, cu); | |
3da10d80 KS |
15024 | else |
15025 | { | |
1d06ead6 | 15026 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15027 | fnp->physname = physname ? physname : ""; |
15028 | } | |
15029 | ||
c906108c | 15030 | fnp->type = alloc_type (objfile); |
f792889a | 15031 | this_type = read_type_die (die, cu); |
78134374 | 15032 | if (this_type && this_type->code () == TYPE_CODE_FUNC) |
c906108c | 15033 | { |
1f704f76 | 15034 | int nparams = this_type->num_fields (); |
c906108c | 15035 | |
f792889a | 15036 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15037 | of the method itself (TYPE_CODE_METHOD). */ |
15038 | smash_to_method_type (fnp->type, type, | |
f792889a | 15039 | TYPE_TARGET_TYPE (this_type), |
80fc5e77 | 15040 | this_type->fields (), |
1f704f76 | 15041 | this_type->num_fields (), |
f792889a | 15042 | TYPE_VARARGS (this_type)); |
c906108c SS |
15043 | |
15044 | /* Handle static member functions. | |
c5aa993b | 15045 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
15046 | member functions. G++ helps GDB by marking the first |
15047 | parameter for non-static member functions (which is the this | |
15048 | pointer) as artificial. We obtain this information from | |
15049 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15050 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15051 | fnp->voffset = VOFFSET_STATIC; |
15052 | } | |
15053 | else | |
b98664d3 | 15054 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15055 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15056 | |
15057 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15058 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15059 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15060 | |
3e43a32a MS |
15061 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15062 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15063 | |
15064 | /* Get accessibility. */ | |
e142c38c | 15065 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
435d3d88 | 15066 | if (attr != nullptr) |
aead7601 | 15067 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
15068 | else |
15069 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15070 | switch (accessibility) | |
c906108c | 15071 | { |
60d5a603 JK |
15072 | case DW_ACCESS_private: |
15073 | fnp->is_private = 1; | |
15074 | break; | |
15075 | case DW_ACCESS_protected: | |
15076 | fnp->is_protected = 1; | |
15077 | break; | |
c906108c SS |
15078 | } |
15079 | ||
b02dede2 | 15080 | /* Check for artificial methods. */ |
e142c38c | 15081 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
15082 | if (attr && DW_UNSND (attr) != 0) |
15083 | fnp->is_artificial = 1; | |
15084 | ||
e35000a7 TBA |
15085 | /* Check for defaulted methods. */ |
15086 | attr = dwarf2_attr (die, DW_AT_defaulted, cu); | |
15087 | if (attr != nullptr && is_valid_DW_AT_defaulted (DW_UNSND (attr))) | |
15088 | fnp->defaulted = (enum dwarf_defaulted_attribute) DW_UNSND (attr); | |
15089 | ||
15090 | /* Check for deleted methods. */ | |
15091 | attr = dwarf2_attr (die, DW_AT_deleted, cu); | |
15092 | if (attr != nullptr && DW_UNSND (attr) != 0) | |
15093 | fnp->is_deleted = 1; | |
15094 | ||
7d27a96d TT |
15095 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15096 | ||
0d564a31 | 15097 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15098 | function. For older versions of GCC, this is an offset in the |
15099 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15100 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15101 | to the object address. */ |
15102 | ||
e142c38c | 15103 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
435d3d88 | 15104 | if (attr != nullptr) |
8e19ed76 | 15105 | { |
4fc6c0d5 | 15106 | if (attr->form_is_block () && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 15107 | { |
aec5aa8b TT |
15108 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
15109 | { | |
15110 | /* Old-style GCC. */ | |
15111 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
15112 | } | |
15113 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
15114 | || (DW_BLOCK (attr)->size > 1 | |
15115 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
15116 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
15117 | { | |
aec5aa8b TT |
15118 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
15119 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
15120 | dwarf2_complex_location_expr_complaint (); | |
15121 | else | |
15122 | fnp->voffset /= cu->header.addr_size; | |
15123 | fnp->voffset += 2; | |
15124 | } | |
15125 | else | |
15126 | dwarf2_complex_location_expr_complaint (); | |
15127 | ||
15128 | if (!fnp->fcontext) | |
7e993ebf KS |
15129 | { |
15130 | /* If there is no `this' field and no DW_AT_containing_type, | |
15131 | we cannot actually find a base class context for the | |
15132 | vtable! */ | |
1f704f76 | 15133 | if (this_type->num_fields () == 0 |
7e993ebf KS |
15134 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) |
15135 | { | |
b98664d3 | 15136 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15137 | "function \"%s\" (offset %s)"), |
15138 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15139 | } |
15140 | else | |
15141 | { | |
15142 | fnp->fcontext | |
15143 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
15144 | } | |
15145 | } | |
aec5aa8b | 15146 | } |
cd6c91b4 | 15147 | else if (attr->form_is_section_offset ()) |
8e19ed76 | 15148 | { |
4d3c2250 | 15149 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15150 | } |
15151 | else | |
15152 | { | |
4d3c2250 KB |
15153 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15154 | fieldname); | |
8e19ed76 | 15155 | } |
0d564a31 | 15156 | } |
d48cc9dd DJ |
15157 | else |
15158 | { | |
15159 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
15160 | if (attr && DW_UNSND (attr)) | |
15161 | { | |
15162 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15163 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15164 | "but the vtable offset is not specified"), |
9d8780f0 | 15165 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15166 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15167 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15168 | } | |
15169 | } | |
c906108c SS |
15170 | } |
15171 | ||
15172 | /* Create the vector of member function fields, and attach it to the type. */ | |
15173 | ||
15174 | static void | |
fba45db2 | 15175 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15176 | struct dwarf2_cu *cu) |
c906108c | 15177 | { |
b4ba55a1 | 15178 | if (cu->language == language_ada) |
a73c6dcd | 15179 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15180 | |
c906108c SS |
15181 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15182 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15183 | TYPE_ALLOC (type, |
15184 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15185 | |
be2daae6 | 15186 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15187 | { |
be2daae6 | 15188 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15189 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15190 | |
be2daae6 TT |
15191 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15192 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15193 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15194 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15195 | ||
15196 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15197 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15198 | } |
15199 | ||
be2daae6 | 15200 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15201 | } |
15202 | ||
1168df01 JB |
15203 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15204 | language, zero otherwise. */ | |
15205 | static int | |
15206 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15207 | { | |
15208 | static const char vptr[] = "_vptr"; | |
15209 | ||
9c37b5ae TT |
15210 | /* Look for the C++ form of the vtable. */ |
15211 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15212 | return 1; |
15213 | ||
15214 | return 0; | |
15215 | } | |
15216 | ||
c0dd20ea | 15217 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15218 | functions, with the ABI-specified layout. If TYPE describes |
15219 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15220 | |
15221 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15222 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15223 | |
0b92b5bb TT |
15224 | static void |
15225 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15226 | { |
09e2d7c7 | 15227 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15228 | |
15229 | /* Check for a structure with no name and two children. */ | |
1f704f76 | 15230 | if (type->code () != TYPE_CODE_STRUCT || type->num_fields () != 2) |
0b92b5bb | 15231 | return; |
c0dd20ea DJ |
15232 | |
15233 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15234 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15235 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15236 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15237 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15238 | return; | |
c0dd20ea DJ |
15239 | |
15240 | /* Find the type of the method. */ | |
0b92b5bb | 15241 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea | 15242 | if (pfn_type == NULL |
78134374 SM |
15243 | || pfn_type->code () != TYPE_CODE_PTR |
15244 | || TYPE_TARGET_TYPE (pfn_type)->code () != TYPE_CODE_FUNC) | |
0b92b5bb | 15245 | return; |
c0dd20ea DJ |
15246 | |
15247 | /* Look for the "this" argument. */ | |
15248 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
1f704f76 | 15249 | if (pfn_type->num_fields () == 0 |
0b92b5bb | 15250 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
78134374 | 15251 | || TYPE_FIELD_TYPE (pfn_type, 0)->code () != TYPE_CODE_PTR) |
0b92b5bb | 15252 | return; |
c0dd20ea | 15253 | |
09e2d7c7 | 15254 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 15255 | new_type = alloc_type (objfile); |
09e2d7c7 | 15256 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
80fc5e77 | 15257 | pfn_type->fields (), pfn_type->num_fields (), |
c0dd20ea | 15258 | TYPE_VARARGS (pfn_type)); |
0b92b5bb | 15259 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15260 | } |
1168df01 | 15261 | |
2b4424c3 TT |
15262 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15263 | appropriate error checking and issuing complaints if there is a | |
15264 | problem. */ | |
15265 | ||
15266 | static ULONGEST | |
15267 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15268 | { | |
15269 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15270 | ||
15271 | if (attr == nullptr) | |
15272 | return 0; | |
15273 | ||
cd6c91b4 | 15274 | if (!attr->form_is_constant ()) |
2b4424c3 | 15275 | { |
b98664d3 | 15276 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15277 | " - DIE at %s [in module %s]"), |
15278 | sect_offset_str (die->sect_off), | |
5e22e966 | 15279 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15280 | return 0; |
15281 | } | |
15282 | ||
15283 | ULONGEST align; | |
15284 | if (attr->form == DW_FORM_sdata) | |
15285 | { | |
15286 | LONGEST val = DW_SND (attr); | |
15287 | if (val < 0) | |
15288 | { | |
b98664d3 | 15289 | complaint (_("DW_AT_alignment value must not be negative" |
2b4424c3 TT |
15290 | " - DIE at %s [in module %s]"), |
15291 | sect_offset_str (die->sect_off), | |
5e22e966 | 15292 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15293 | return 0; |
15294 | } | |
15295 | align = val; | |
15296 | } | |
15297 | else | |
15298 | align = DW_UNSND (attr); | |
15299 | ||
15300 | if (align == 0) | |
15301 | { | |
b98664d3 | 15302 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15303 | " - DIE at %s [in module %s]"), |
15304 | sect_offset_str (die->sect_off), | |
5e22e966 | 15305 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15306 | return 0; |
15307 | } | |
15308 | if ((align & (align - 1)) != 0) | |
15309 | { | |
b98664d3 | 15310 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
15311 | " - DIE at %s [in module %s]"), |
15312 | sect_offset_str (die->sect_off), | |
5e22e966 | 15313 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 TT |
15314 | return 0; |
15315 | } | |
15316 | ||
15317 | return align; | |
15318 | } | |
15319 | ||
15320 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15321 | the alignment for TYPE. */ | |
15322 | ||
15323 | static void | |
15324 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15325 | struct type *type) | |
15326 | { | |
15327 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15328 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15329 | " - DIE at %s [in module %s]"), |
15330 | sect_offset_str (die->sect_off), | |
5e22e966 | 15331 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 15332 | } |
685b1105 | 15333 | |
e35000a7 TBA |
15334 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15335 | constant for a type, according to DWARF5 spec, Table 5.5. */ | |
15336 | ||
15337 | static bool | |
15338 | is_valid_DW_AT_calling_convention_for_type (ULONGEST value) | |
15339 | { | |
15340 | switch (value) | |
15341 | { | |
15342 | case DW_CC_normal: | |
15343 | case DW_CC_pass_by_reference: | |
15344 | case DW_CC_pass_by_value: | |
15345 | return true; | |
15346 | ||
15347 | default: | |
15348 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15349 | "(%s) for a type"), pulongest (value)); |
e35000a7 TBA |
15350 | return false; |
15351 | } | |
15352 | } | |
15353 | ||
d0922fcf TBA |
15354 | /* Check if the given VALUE is a valid enum dwarf_calling_convention |
15355 | constant for a subroutine, according to DWARF5 spec, Table 3.3, and | |
15356 | also according to GNU-specific values (see include/dwarf2.h). */ | |
15357 | ||
15358 | static bool | |
15359 | is_valid_DW_AT_calling_convention_for_subroutine (ULONGEST value) | |
15360 | { | |
15361 | switch (value) | |
15362 | { | |
15363 | case DW_CC_normal: | |
15364 | case DW_CC_program: | |
15365 | case DW_CC_nocall: | |
15366 | return true; | |
15367 | ||
15368 | case DW_CC_GNU_renesas_sh: | |
15369 | case DW_CC_GNU_borland_fastcall_i386: | |
15370 | case DW_CC_GDB_IBM_OpenCL: | |
15371 | return true; | |
15372 | ||
15373 | default: | |
15374 | complaint (_("unrecognized DW_AT_calling_convention value " | |
3142e908 | 15375 | "(%s) for a subroutine"), pulongest (value)); |
d0922fcf TBA |
15376 | return false; |
15377 | } | |
15378 | } | |
15379 | ||
c906108c | 15380 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15381 | (definition) to create a type for the structure or union. Fill in |
15382 | the type's name and general properties; the members will not be | |
83655187 DE |
15383 | processed until process_structure_scope. A symbol table entry for |
15384 | the type will also not be done until process_structure_scope (assuming | |
15385 | the type has a name). | |
c906108c | 15386 | |
c767944b DJ |
15387 | NOTE: we need to call these functions regardless of whether or not the |
15388 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15389 | structure or union. This gets the type entered into our set of |
83655187 | 15390 | user defined types. */ |
c906108c | 15391 | |
f792889a | 15392 | static struct type * |
134d01f1 | 15393 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15394 | { |
5e22e966 | 15395 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
15396 | struct type *type; |
15397 | struct attribute *attr; | |
15d034d0 | 15398 | const char *name; |
c906108c | 15399 | |
348e048f DE |
15400 | /* If the definition of this type lives in .debug_types, read that type. |
15401 | Don't follow DW_AT_specification though, that will take us back up | |
15402 | the chain and we want to go down. */ | |
052c8bb8 | 15403 | attr = die->attr (DW_AT_signature); |
435d3d88 | 15404 | if (attr != nullptr) |
348e048f | 15405 | { |
ac9ec31b | 15406 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15407 | |
ac9ec31b | 15408 | /* The type's CU may not be the same as CU. |
02142a6c | 15409 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15410 | return set_die_type (die, type, cu); |
15411 | } | |
15412 | ||
c0dd20ea | 15413 | type = alloc_type (objfile); |
c906108c | 15414 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15415 | |
39cbfefa DJ |
15416 | name = dwarf2_name (die, cu); |
15417 | if (name != NULL) | |
c906108c | 15418 | { |
987504bb | 15419 | if (cu->language == language_cplus |
c44af4eb TT |
15420 | || cu->language == language_d |
15421 | || cu->language == language_rust) | |
63d06c5c | 15422 | { |
15d034d0 | 15423 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15424 | |
15425 | /* dwarf2_full_name might have already finished building the DIE's | |
15426 | type. If so, there is no need to continue. */ | |
15427 | if (get_die_type (die, cu) != NULL) | |
15428 | return get_die_type (die, cu); | |
15429 | ||
d0e39ea2 | 15430 | type->set_name (full_name); |
63d06c5c DC |
15431 | } |
15432 | else | |
15433 | { | |
d8151005 DJ |
15434 | /* The name is already allocated along with this objfile, so |
15435 | we don't need to duplicate it for the type. */ | |
d0e39ea2 | 15436 | type->set_name (name); |
63d06c5c | 15437 | } |
c906108c SS |
15438 | } |
15439 | ||
15440 | if (die->tag == DW_TAG_structure_type) | |
15441 | { | |
67607e24 | 15442 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
15443 | } |
15444 | else if (die->tag == DW_TAG_union_type) | |
15445 | { | |
67607e24 | 15446 | type->set_code (TYPE_CODE_UNION); |
c906108c SS |
15447 | } |
15448 | else | |
15449 | { | |
67607e24 | 15450 | type->set_code (TYPE_CODE_STRUCT); |
c906108c SS |
15451 | } |
15452 | ||
0cc2414c TT |
15453 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
15454 | TYPE_DECLARED_CLASS (type) = 1; | |
15455 | ||
e35000a7 TBA |
15456 | /* Store the calling convention in the type if it's available in |
15457 | the die. Otherwise the calling convention remains set to | |
15458 | the default value DW_CC_normal. */ | |
15459 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
15460 | if (attr != nullptr | |
15461 | && is_valid_DW_AT_calling_convention_for_type (DW_UNSND (attr))) | |
15462 | { | |
15463 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15464 | TYPE_CPLUS_CALLING_CONVENTION (type) | |
15465 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
15466 | } | |
15467 | ||
e142c38c | 15468 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 15469 | if (attr != nullptr) |
c906108c | 15470 | { |
cd6c91b4 | 15471 | if (attr->form_is_constant ()) |
155bfbd3 JB |
15472 | TYPE_LENGTH (type) = DW_UNSND (attr); |
15473 | else | |
15474 | { | |
f8e89861 TT |
15475 | struct dynamic_prop prop; |
15476 | if (attr_to_dynamic_prop (attr, die, cu, &prop, | |
15477 | cu->per_cu->addr_type ())) | |
5c54719c | 15478 | type->add_dyn_prop (DYN_PROP_BYTE_SIZE, prop); |
155bfbd3 JB |
15479 | TYPE_LENGTH (type) = 0; |
15480 | } | |
c906108c SS |
15481 | } |
15482 | else | |
15483 | { | |
15484 | TYPE_LENGTH (type) = 0; | |
15485 | } | |
15486 | ||
2b4424c3 TT |
15487 | maybe_set_alignment (cu, die, type); |
15488 | ||
5230b05a | 15489 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15490 | { |
5230b05a WT |
15491 | /* ICC<14 does not output the required DW_AT_declaration on |
15492 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15493 | TYPE_STUB (type) = 1; |
685b1105 JK |
15494 | } |
15495 | else | |
15496 | TYPE_STUB_SUPPORTED (type) = 1; | |
15497 | ||
dc718098 | 15498 | if (die_is_declaration (die, cu)) |
876cecd0 | 15499 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15500 | else if (attr == NULL && die->child == NULL |
15501 | && producer_is_realview (cu->producer)) | |
15502 | /* RealView does not output the required DW_AT_declaration | |
15503 | on incomplete types. */ | |
15504 | TYPE_STUB (type) = 1; | |
dc718098 | 15505 | |
c906108c SS |
15506 | /* We need to add the type field to the die immediately so we don't |
15507 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15508 | type within the structure itself. */ |
1c379e20 | 15509 | set_die_type (die, type, cu); |
c906108c | 15510 | |
7e314c57 JK |
15511 | /* set_die_type should be already done. */ |
15512 | set_descriptive_type (type, die, cu); | |
15513 | ||
c767944b DJ |
15514 | return type; |
15515 | } | |
15516 | ||
9c6a1327 TT |
15517 | static void handle_struct_member_die |
15518 | (struct die_info *child_die, | |
15519 | struct type *type, | |
15520 | struct field_info *fi, | |
15521 | std::vector<struct symbol *> *template_args, | |
15522 | struct dwarf2_cu *cu); | |
15523 | ||
15524 | /* A helper for handle_struct_member_die that handles | |
15525 | DW_TAG_variant_part. */ | |
15526 | ||
15527 | static void | |
15528 | handle_variant_part (struct die_info *die, struct type *type, | |
15529 | struct field_info *fi, | |
15530 | std::vector<struct symbol *> *template_args, | |
15531 | struct dwarf2_cu *cu) | |
15532 | { | |
15533 | variant_part_builder *new_part; | |
15534 | if (fi->current_variant_part == nullptr) | |
15535 | { | |
15536 | fi->variant_parts.emplace_back (); | |
15537 | new_part = &fi->variant_parts.back (); | |
15538 | } | |
15539 | else if (!fi->current_variant_part->processing_variant) | |
15540 | { | |
15541 | complaint (_("nested DW_TAG_variant_part seen " | |
15542 | "- DIE at %s [in module %s]"), | |
15543 | sect_offset_str (die->sect_off), | |
5e22e966 | 15544 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15545 | return; |
15546 | } | |
15547 | else | |
15548 | { | |
15549 | variant_field ¤t = fi->current_variant_part->variants.back (); | |
15550 | current.variant_parts.emplace_back (); | |
15551 | new_part = ¤t.variant_parts.back (); | |
15552 | } | |
15553 | ||
15554 | /* When we recurse, we want callees to add to this new variant | |
15555 | part. */ | |
15556 | scoped_restore save_current_variant_part | |
15557 | = make_scoped_restore (&fi->current_variant_part, new_part); | |
15558 | ||
15559 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
15560 | if (discr == NULL) | |
15561 | { | |
15562 | /* It's a univariant form, an extension we support. */ | |
15563 | } | |
15564 | else if (discr->form_is_ref ()) | |
15565 | { | |
15566 | struct dwarf2_cu *target_cu = cu; | |
15567 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
15568 | ||
15569 | new_part->discriminant_offset = target_die->sect_off; | |
15570 | } | |
15571 | else | |
15572 | { | |
15573 | complaint (_("DW_AT_discr does not have DIE reference form" | |
15574 | " - DIE at %s [in module %s]"), | |
15575 | sect_offset_str (die->sect_off), | |
5e22e966 | 15576 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15577 | } |
15578 | ||
15579 | for (die_info *child_die = die->child; | |
15580 | child_die != NULL; | |
15581 | child_die = child_die->sibling) | |
15582 | handle_struct_member_die (child_die, type, fi, template_args, cu); | |
15583 | } | |
15584 | ||
15585 | /* A helper for handle_struct_member_die that handles | |
15586 | DW_TAG_variant. */ | |
15587 | ||
15588 | static void | |
15589 | handle_variant (struct die_info *die, struct type *type, | |
15590 | struct field_info *fi, | |
15591 | std::vector<struct symbol *> *template_args, | |
15592 | struct dwarf2_cu *cu) | |
15593 | { | |
15594 | if (fi->current_variant_part == nullptr) | |
15595 | { | |
15596 | complaint (_("saw DW_TAG_variant outside DW_TAG_variant_part " | |
15597 | "- DIE at %s [in module %s]"), | |
15598 | sect_offset_str (die->sect_off), | |
5e22e966 | 15599 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15600 | return; |
15601 | } | |
15602 | if (fi->current_variant_part->processing_variant) | |
15603 | { | |
15604 | complaint (_("nested DW_TAG_variant seen " | |
15605 | "- DIE at %s [in module %s]"), | |
15606 | sect_offset_str (die->sect_off), | |
5e22e966 | 15607 | objfile_name (cu->per_objfile->objfile)); |
9c6a1327 TT |
15608 | return; |
15609 | } | |
15610 | ||
15611 | scoped_restore save_processing_variant | |
15612 | = make_scoped_restore (&fi->current_variant_part->processing_variant, | |
15613 | true); | |
15614 | ||
15615 | fi->current_variant_part->variants.emplace_back (); | |
15616 | variant_field &variant = fi->current_variant_part->variants.back (); | |
15617 | variant.first_field = fi->fields.size (); | |
15618 | ||
15619 | /* In a variant we want to get the discriminant and also add a | |
15620 | field for our sole member child. */ | |
15621 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr_value, cu); | |
15622 | if (discr == nullptr) | |
15623 | { | |
15624 | discr = dwarf2_attr (die, DW_AT_discr_list, cu); | |
15625 | if (discr == nullptr || DW_BLOCK (discr)->size == 0) | |
15626 | variant.default_branch = true; | |
15627 | else | |
15628 | variant.discr_list_data = DW_BLOCK (discr); | |
15629 | } | |
15630 | else | |
15631 | variant.discriminant_value = DW_UNSND (discr); | |
15632 | ||
15633 | for (die_info *variant_child = die->child; | |
15634 | variant_child != NULL; | |
15635 | variant_child = variant_child->sibling) | |
15636 | handle_struct_member_die (variant_child, type, fi, template_args, cu); | |
15637 | ||
15638 | variant.last_field = fi->fields.size (); | |
15639 | } | |
15640 | ||
2ddeaf8a TT |
15641 | /* A helper for process_structure_scope that handles a single member |
15642 | DIE. */ | |
15643 | ||
15644 | static void | |
15645 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15646 | struct field_info *fi, | |
15647 | std::vector<struct symbol *> *template_args, | |
15648 | struct dwarf2_cu *cu) | |
15649 | { | |
15650 | if (child_die->tag == DW_TAG_member | |
9c6a1327 | 15651 | || child_die->tag == DW_TAG_variable) |
2ddeaf8a TT |
15652 | { |
15653 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15654 | should be a DW_TAG_member that is a declaration, but | |
15655 | all versions of G++ as of this writing (so through at | |
15656 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15657 | tags for them instead. */ | |
15658 | dwarf2_add_field (fi, child_die, cu); | |
15659 | } | |
15660 | else if (child_die->tag == DW_TAG_subprogram) | |
15661 | { | |
15662 | /* Rust doesn't have member functions in the C++ sense. | |
15663 | However, it does emit ordinary functions as children | |
15664 | of a struct DIE. */ | |
15665 | if (cu->language == language_rust) | |
15666 | read_func_scope (child_die, cu); | |
15667 | else | |
15668 | { | |
15669 | /* C++ member function. */ | |
15670 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
15671 | } | |
15672 | } | |
15673 | else if (child_die->tag == DW_TAG_inheritance) | |
15674 | { | |
15675 | /* C++ base class field. */ | |
15676 | dwarf2_add_field (fi, child_die, cu); | |
15677 | } | |
15678 | else if (type_can_define_types (child_die)) | |
15679 | dwarf2_add_type_defn (fi, child_die, cu); | |
15680 | else if (child_die->tag == DW_TAG_template_type_param | |
15681 | || child_die->tag == DW_TAG_template_value_param) | |
15682 | { | |
15683 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15684 | ||
15685 | if (arg != NULL) | |
15686 | template_args->push_back (arg); | |
15687 | } | |
9c6a1327 TT |
15688 | else if (child_die->tag == DW_TAG_variant_part) |
15689 | handle_variant_part (child_die, type, fi, template_args, cu); | |
2ddeaf8a | 15690 | else if (child_die->tag == DW_TAG_variant) |
9c6a1327 | 15691 | handle_variant (child_die, type, fi, template_args, cu); |
2ddeaf8a TT |
15692 | } |
15693 | ||
c767944b DJ |
15694 | /* Finish creating a structure or union type, including filling in |
15695 | its members and creating a symbol for it. */ | |
15696 | ||
15697 | static void | |
15698 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15699 | { | |
5e22e966 | 15700 | struct objfile *objfile = cu->per_objfile->objfile; |
ca040673 | 15701 | struct die_info *child_die; |
c767944b DJ |
15702 | struct type *type; |
15703 | ||
15704 | type = get_die_type (die, cu); | |
15705 | if (type == NULL) | |
15706 | type = read_structure_type (die, cu); | |
15707 | ||
3e1d3d8c | 15708 | bool has_template_parameters = false; |
e142c38c | 15709 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
15710 | { |
15711 | struct field_info fi; | |
2f4732b0 | 15712 | std::vector<struct symbol *> template_args; |
c906108c | 15713 | |
639d11d3 | 15714 | child_die = die->child; |
c906108c SS |
15715 | |
15716 | while (child_die && child_die->tag) | |
15717 | { | |
2ddeaf8a | 15718 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
436c571c | 15719 | child_die = child_die->sibling; |
c906108c SS |
15720 | } |
15721 | ||
34eaf542 | 15722 | /* Attach template arguments to type. */ |
2f4732b0 | 15723 | if (!template_args.empty ()) |
34eaf542 | 15724 | { |
3e1d3d8c | 15725 | has_template_parameters = true; |
34eaf542 | 15726 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 15727 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 15728 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
15729 | = XOBNEWVEC (&objfile->objfile_obstack, |
15730 | struct symbol *, | |
15731 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 15732 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 15733 | template_args.data (), |
34eaf542 TT |
15734 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
15735 | * sizeof (struct symbol *))); | |
34eaf542 TT |
15736 | } |
15737 | ||
c906108c | 15738 | /* Attach fields and member functions to the type. */ |
317f7127 | 15739 | if (fi.nfields () > 0) |
e7c27a73 | 15740 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 15741 | if (!fi.fnfieldlists.empty ()) |
c906108c | 15742 | { |
e7c27a73 | 15743 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 15744 | |
c5aa993b | 15745 | /* Get the type which refers to the base class (possibly this |
c906108c | 15746 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
15747 | class from the DW_AT_containing_type attribute. This use of |
15748 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 15749 | |
e142c38c | 15750 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 15751 | { |
e7c27a73 | 15752 | struct type *t = die_containing_type (die, cu); |
c906108c | 15753 | |
ae6ae975 | 15754 | set_type_vptr_basetype (type, t); |
c906108c SS |
15755 | if (type == t) |
15756 | { | |
c906108c SS |
15757 | int i; |
15758 | ||
15759 | /* Our own class provides vtbl ptr. */ | |
1f704f76 | 15760 | for (i = t->num_fields () - 1; |
c906108c SS |
15761 | i >= TYPE_N_BASECLASSES (t); |
15762 | --i) | |
15763 | { | |
0d5cff50 | 15764 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 15765 | |
1168df01 | 15766 | if (is_vtable_name (fieldname, cu)) |
c906108c | 15767 | { |
ae6ae975 | 15768 | set_type_vptr_fieldno (type, i); |
c906108c SS |
15769 | break; |
15770 | } | |
15771 | } | |
15772 | ||
15773 | /* Complain if virtual function table field not found. */ | |
15774 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 15775 | complaint (_("virtual function table pointer " |
3e43a32a | 15776 | "not found when defining class '%s'"), |
7d93a1e0 | 15777 | type->name () ? type->name () : ""); |
c906108c SS |
15778 | } |
15779 | else | |
15780 | { | |
ae6ae975 | 15781 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
15782 | } |
15783 | } | |
f6235d4c | 15784 | else if (cu->producer |
61012eef | 15785 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
15786 | { |
15787 | /* The IBM XLC compiler does not provide direct indication | |
15788 | of the containing type, but the vtable pointer is | |
15789 | always named __vfp. */ | |
15790 | ||
15791 | int i; | |
15792 | ||
1f704f76 | 15793 | for (i = type->num_fields () - 1; |
f6235d4c EZ |
15794 | i >= TYPE_N_BASECLASSES (type); |
15795 | --i) | |
15796 | { | |
15797 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
15798 | { | |
ae6ae975 DE |
15799 | set_type_vptr_fieldno (type, i); |
15800 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
15801 | break; |
15802 | } | |
15803 | } | |
15804 | } | |
c906108c | 15805 | } |
98751a41 JK |
15806 | |
15807 | /* Copy fi.typedef_field_list linked list elements content into the | |
15808 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 15809 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 15810 | { |
be2daae6 | 15811 | int count = fi.typedef_field_list.size (); |
98751a41 | 15812 | |
a0d7a4ff | 15813 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 15814 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 15815 | = ((struct decl_field *) |
be2daae6 TT |
15816 | TYPE_ALLOC (type, |
15817 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
15818 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 15819 | |
be2daae6 TT |
15820 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
15821 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 15822 | } |
c767944b | 15823 | |
883fd55a KS |
15824 | /* Copy fi.nested_types_list linked list elements content into the |
15825 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 15826 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 15827 | { |
be2daae6 | 15828 | int count = fi.nested_types_list.size (); |
883fd55a KS |
15829 | |
15830 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15831 | TYPE_NESTED_TYPES_ARRAY (type) | |
15832 | = ((struct decl_field *) | |
be2daae6 TT |
15833 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
15834 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 15835 | |
be2daae6 TT |
15836 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
15837 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 15838 | } |
c906108c | 15839 | } |
63d06c5c | 15840 | |
bb5ed363 | 15841 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
15842 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
15843 | cu->rust_unions.push_back (type); | |
0b92b5bb | 15844 | |
90aeadfc DC |
15845 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
15846 | snapshots) has been known to create a die giving a declaration | |
15847 | for a class that has, as a child, a die giving a definition for a | |
15848 | nested class. So we have to process our children even if the | |
15849 | current die is a declaration. Normally, of course, a declaration | |
15850 | won't have any children at all. */ | |
134d01f1 | 15851 | |
ca040673 DE |
15852 | child_die = die->child; |
15853 | ||
90aeadfc DC |
15854 | while (child_die != NULL && child_die->tag) |
15855 | { | |
15856 | if (child_die->tag == DW_TAG_member | |
15857 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
15858 | || child_die->tag == DW_TAG_inheritance |
15859 | || child_die->tag == DW_TAG_template_value_param | |
15860 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 15861 | { |
90aeadfc | 15862 | /* Do nothing. */ |
134d01f1 | 15863 | } |
90aeadfc DC |
15864 | else |
15865 | process_die (child_die, cu); | |
134d01f1 | 15866 | |
436c571c | 15867 | child_die = child_die->sibling; |
134d01f1 DJ |
15868 | } |
15869 | ||
fa4028e9 JB |
15870 | /* Do not consider external references. According to the DWARF standard, |
15871 | these DIEs are identified by the fact that they have no byte_size | |
15872 | attribute, and a declaration attribute. */ | |
15873 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
15cd93d0 TV |
15874 | || !die_is_declaration (die, cu) |
15875 | || dwarf2_attr (die, DW_AT_signature, cu) != NULL) | |
3e1d3d8c TT |
15876 | { |
15877 | struct symbol *sym = new_symbol (die, type, cu); | |
15878 | ||
15879 | if (has_template_parameters) | |
15880 | { | |
a776957c TT |
15881 | struct symtab *symtab; |
15882 | if (sym != nullptr) | |
15883 | symtab = symbol_symtab (sym); | |
15884 | else if (cu->line_header != nullptr) | |
15885 | { | |
15886 | /* Any related symtab will do. */ | |
15887 | symtab | |
7ba99d21 | 15888 | = cu->line_header->file_names ()[0].symtab; |
a776957c TT |
15889 | } |
15890 | else | |
15891 | { | |
15892 | symtab = nullptr; | |
15893 | complaint (_("could not find suitable " | |
15894 | "symtab for template parameter" | |
15895 | " - DIE at %s [in module %s]"), | |
15896 | sect_offset_str (die->sect_off), | |
15897 | objfile_name (objfile)); | |
15898 | } | |
15899 | ||
15900 | if (symtab != nullptr) | |
15901 | { | |
15902 | /* Make sure that the symtab is set on the new symbols. | |
15903 | Even though they don't appear in this symtab directly, | |
15904 | other parts of gdb assume that symbols do, and this is | |
15905 | reasonably true. */ | |
15906 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
15907 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
15908 | } | |
3e1d3d8c TT |
15909 | } |
15910 | } | |
134d01f1 DJ |
15911 | } |
15912 | ||
ed6acedd TT |
15913 | /* Assuming DIE is an enumeration type, and TYPE is its associated |
15914 | type, update TYPE using some information only available in DIE's | |
15915 | children. In particular, the fields are computed. */ | |
55426c9d JB |
15916 | |
15917 | static void | |
15918 | update_enumeration_type_from_children (struct die_info *die, | |
15919 | struct type *type, | |
15920 | struct dwarf2_cu *cu) | |
15921 | { | |
60f7655a | 15922 | struct die_info *child_die; |
55426c9d JB |
15923 | int unsigned_enum = 1; |
15924 | int flag_enum = 1; | |
55426c9d | 15925 | |
8268c778 | 15926 | auto_obstack obstack; |
ed6acedd | 15927 | std::vector<struct field> fields; |
55426c9d | 15928 | |
60f7655a DE |
15929 | for (child_die = die->child; |
15930 | child_die != NULL && child_die->tag; | |
436c571c | 15931 | child_die = child_die->sibling) |
55426c9d JB |
15932 | { |
15933 | struct attribute *attr; | |
15934 | LONGEST value; | |
15935 | const gdb_byte *bytes; | |
15936 | struct dwarf2_locexpr_baton *baton; | |
15937 | const char *name; | |
60f7655a | 15938 | |
55426c9d JB |
15939 | if (child_die->tag != DW_TAG_enumerator) |
15940 | continue; | |
15941 | ||
15942 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
15943 | if (attr == NULL) | |
15944 | continue; | |
15945 | ||
15946 | name = dwarf2_name (child_die, cu); | |
15947 | if (name == NULL) | |
15948 | name = "<anonymous enumerator>"; | |
15949 | ||
15950 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
15951 | &value, &bytes, &baton); | |
15952 | if (value < 0) | |
15953 | { | |
15954 | unsigned_enum = 0; | |
15955 | flag_enum = 0; | |
15956 | } | |
55426c9d | 15957 | else |
edd45eb0 SM |
15958 | { |
15959 | if (count_one_bits_ll (value) >= 2) | |
15960 | flag_enum = 0; | |
edd45eb0 | 15961 | } |
55426c9d | 15962 | |
ed6acedd TT |
15963 | fields.emplace_back (); |
15964 | struct field &field = fields.back (); | |
15965 | FIELD_NAME (field) = dwarf2_physname (name, child_die, cu); | |
15966 | SET_FIELD_ENUMVAL (field, value); | |
15967 | } | |
15968 | ||
15969 | if (!fields.empty ()) | |
15970 | { | |
5e33d5f4 | 15971 | type->set_num_fields (fields.size ()); |
3cabb6b0 SM |
15972 | type->set_fields |
15973 | ((struct field *) | |
15974 | TYPE_ALLOC (type, sizeof (struct field) * fields.size ())); | |
80fc5e77 | 15975 | memcpy (type->fields (), fields.data (), |
ed6acedd | 15976 | sizeof (struct field) * fields.size ()); |
55426c9d JB |
15977 | } |
15978 | ||
15979 | if (unsigned_enum) | |
15980 | TYPE_UNSIGNED (type) = 1; | |
15981 | if (flag_enum) | |
15982 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
15983 | } |
15984 | ||
134d01f1 DJ |
15985 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
15986 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 15987 | |
f792889a | 15988 | static struct type * |
134d01f1 | 15989 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15990 | { |
5e22e966 | 15991 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 15992 | struct type *type; |
c906108c | 15993 | struct attribute *attr; |
0114d602 | 15994 | const char *name; |
134d01f1 | 15995 | |
348e048f DE |
15996 | /* If the definition of this type lives in .debug_types, read that type. |
15997 | Don't follow DW_AT_specification though, that will take us back up | |
15998 | the chain and we want to go down. */ | |
052c8bb8 | 15999 | attr = die->attr (DW_AT_signature); |
435d3d88 | 16000 | if (attr != nullptr) |
348e048f | 16001 | { |
ac9ec31b | 16002 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16003 | |
ac9ec31b | 16004 | /* The type's CU may not be the same as CU. |
02142a6c | 16005 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16006 | return set_die_type (die, type, cu); |
16007 | } | |
16008 | ||
c906108c SS |
16009 | type = alloc_type (objfile); |
16010 | ||
67607e24 | 16011 | type->set_code (TYPE_CODE_ENUM); |
94af9270 | 16012 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16013 | if (name != NULL) |
d0e39ea2 | 16014 | type->set_name (name); |
c906108c | 16015 | |
0626fc76 TT |
16016 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16017 | if (attr != NULL) | |
16018 | { | |
16019 | struct type *underlying_type = die_type (die, cu); | |
16020 | ||
16021 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16022 | } | |
16023 | ||
e142c38c | 16024 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16025 | if (attr != nullptr) |
c906108c SS |
16026 | { |
16027 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16028 | } | |
16029 | else | |
16030 | { | |
16031 | TYPE_LENGTH (type) = 0; | |
16032 | } | |
16033 | ||
2b4424c3 TT |
16034 | maybe_set_alignment (cu, die, type); |
16035 | ||
137033e9 JB |
16036 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16037 | declared as private in the package spec, and then defined only | |
16038 | inside the package body. Such types are known as Taft Amendment | |
16039 | Types. When another package uses such a type, an incomplete DIE | |
16040 | may be generated by the compiler. */ | |
02eb380e | 16041 | if (die_is_declaration (die, cu)) |
876cecd0 | 16042 | TYPE_STUB (type) = 1; |
02eb380e | 16043 | |
0626fc76 TT |
16044 | /* If this type has an underlying type that is not a stub, then we |
16045 | may use its attributes. We always use the "unsigned" attribute | |
16046 | in this situation, because ordinarily we guess whether the type | |
16047 | is unsigned -- but the guess can be wrong and the underlying type | |
16048 | can tell us the reality. However, we defer to a local size | |
16049 | attribute if one exists, because this lets the compiler override | |
16050 | the underlying type if needed. */ | |
16051 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
16052 | { | |
9e7c9a03 HD |
16053 | struct type *underlying_type = TYPE_TARGET_TYPE (type); |
16054 | underlying_type = check_typedef (underlying_type); | |
16055 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (underlying_type); | |
0626fc76 | 16056 | if (TYPE_LENGTH (type) == 0) |
9e7c9a03 | 16057 | TYPE_LENGTH (type) = TYPE_LENGTH (underlying_type); |
2b4424c3 | 16058 | if (TYPE_RAW_ALIGN (type) == 0 |
9e7c9a03 HD |
16059 | && TYPE_RAW_ALIGN (underlying_type) != 0) |
16060 | set_type_align (type, TYPE_RAW_ALIGN (underlying_type)); | |
0626fc76 TT |
16061 | } |
16062 | ||
3d567982 TT |
16063 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16064 | ||
ed6acedd TT |
16065 | set_die_type (die, type, cu); |
16066 | ||
16067 | /* Finish the creation of this type by using the enum's children. | |
16068 | Note that, as usual, this must come after set_die_type to avoid | |
16069 | infinite recursion when trying to compute the names of the | |
16070 | enumerators. */ | |
16071 | update_enumeration_type_from_children (die, type, cu); | |
16072 | ||
16073 | return type; | |
134d01f1 DJ |
16074 | } |
16075 | ||
16076 | /* Given a pointer to a die which begins an enumeration, process all | |
16077 | the dies that define the members of the enumeration, and create the | |
16078 | symbol for the enumeration type. | |
16079 | ||
16080 | NOTE: We reverse the order of the element list. */ | |
16081 | ||
16082 | static void | |
16083 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16084 | { | |
f792889a | 16085 | struct type *this_type; |
134d01f1 | 16086 | |
f792889a DJ |
16087 | this_type = get_die_type (die, cu); |
16088 | if (this_type == NULL) | |
16089 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16090 | |
639d11d3 | 16091 | if (die->child != NULL) |
c906108c | 16092 | { |
9dc481d3 | 16093 | struct die_info *child_die; |
15d034d0 | 16094 | const char *name; |
9dc481d3 | 16095 | |
639d11d3 | 16096 | child_die = die->child; |
c906108c SS |
16097 | while (child_die && child_die->tag) |
16098 | { | |
16099 | if (child_die->tag != DW_TAG_enumerator) | |
16100 | { | |
e7c27a73 | 16101 | process_die (child_die, cu); |
c906108c SS |
16102 | } |
16103 | else | |
16104 | { | |
39cbfefa DJ |
16105 | name = dwarf2_name (child_die, cu); |
16106 | if (name) | |
ed6acedd | 16107 | new_symbol (child_die, this_type, cu); |
c906108c SS |
16108 | } |
16109 | ||
436c571c | 16110 | child_die = child_die->sibling; |
c906108c | 16111 | } |
c906108c | 16112 | } |
134d01f1 | 16113 | |
6c83ed52 TT |
16114 | /* If we are reading an enum from a .debug_types unit, and the enum |
16115 | is a declaration, and the enum is not the signatured type in the | |
16116 | unit, then we do not want to add a symbol for it. Adding a | |
16117 | symbol would in some cases obscure the true definition of the | |
16118 | enum, giving users an incomplete type when the definition is | |
16119 | actually available. Note that we do not want to do this for all | |
16120 | enums which are just declarations, because C++0x allows forward | |
16121 | enum declarations. */ | |
3019eac3 | 16122 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16123 | && die_is_declaration (die, cu)) |
16124 | { | |
52dc124a | 16125 | struct signatured_type *sig_type; |
6c83ed52 | 16126 | |
c0f78cd4 | 16127 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16128 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16129 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16130 | return; |
16131 | } | |
16132 | ||
f792889a | 16133 | new_symbol (die, this_type, cu); |
c906108c SS |
16134 | } |
16135 | ||
16136 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16137 | the DIE's type field. For now, this only handles one dimensional | |
16138 | arrays. */ | |
16139 | ||
f792889a | 16140 | static struct type * |
e7c27a73 | 16141 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16142 | { |
5e22e966 | 16143 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 16144 | struct die_info *child_die; |
7e314c57 | 16145 | struct type *type; |
c906108c | 16146 | struct type *element_type, *range_type, *index_type; |
c906108c | 16147 | struct attribute *attr; |
15d034d0 | 16148 | const char *name; |
a405673c | 16149 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16150 | unsigned int bit_stride = 0; |
c906108c | 16151 | |
e7c27a73 | 16152 | element_type = die_type (die, cu); |
c906108c | 16153 | |
7e314c57 JK |
16154 | /* The die_type call above may have already set the type for this DIE. */ |
16155 | type = get_die_type (die, cu); | |
16156 | if (type) | |
16157 | return type; | |
16158 | ||
dc53a7ad JB |
16159 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16160 | if (attr != NULL) | |
a405673c JB |
16161 | { |
16162 | int stride_ok; | |
09ba997f | 16163 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
a405673c JB |
16164 | |
16165 | byte_stride_prop | |
16166 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
9a49df9d AB |
16167 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop, |
16168 | prop_type); | |
a405673c JB |
16169 | if (!stride_ok) |
16170 | { | |
b98664d3 | 16171 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
16172 | " - DIE at %s [in module %s]"), |
16173 | sect_offset_str (die->sect_off), | |
5e22e966 | 16174 | objfile_name (cu->per_objfile->objfile)); |
a405673c JB |
16175 | /* Ignore this attribute. We will likely not be able to print |
16176 | arrays of this type correctly, but there is little we can do | |
16177 | to help if we cannot read the attribute's value. */ | |
16178 | byte_stride_prop = NULL; | |
16179 | } | |
16180 | } | |
dc53a7ad JB |
16181 | |
16182 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16183 | if (attr != NULL) | |
16184 | bit_stride = DW_UNSND (attr); | |
16185 | ||
c906108c SS |
16186 | /* Irix 6.2 native cc creates array types without children for |
16187 | arrays with unspecified length. */ | |
639d11d3 | 16188 | if (die->child == NULL) |
c906108c | 16189 | { |
46bf5051 | 16190 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16191 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16192 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16193 | byte_stride_prop, bit_stride); |
f792889a | 16194 | return set_die_type (die, type, cu); |
c906108c SS |
16195 | } |
16196 | ||
791afaa2 | 16197 | std::vector<struct type *> range_types; |
639d11d3 | 16198 | child_die = die->child; |
c906108c SS |
16199 | while (child_die && child_die->tag) |
16200 | { | |
16201 | if (child_die->tag == DW_TAG_subrange_type) | |
16202 | { | |
f792889a | 16203 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16204 | |
f792889a | 16205 | if (child_type != NULL) |
a02abb62 | 16206 | { |
0963b4bd MS |
16207 | /* The range type was succesfully read. Save it for the |
16208 | array type creation. */ | |
791afaa2 | 16209 | range_types.push_back (child_type); |
a02abb62 | 16210 | } |
c906108c | 16211 | } |
436c571c | 16212 | child_die = child_die->sibling; |
c906108c SS |
16213 | } |
16214 | ||
16215 | /* Dwarf2 dimensions are output from left to right, create the | |
16216 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16217 | |
c906108c | 16218 | type = element_type; |
7ca2d3a3 DL |
16219 | |
16220 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16221 | { | |
16222 | int i = 0; | |
9a619af0 | 16223 | |
791afaa2 | 16224 | while (i < range_types.size ()) |
dc53a7ad | 16225 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 16226 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
16227 | } |
16228 | else | |
16229 | { | |
791afaa2 | 16230 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16231 | while (ndim-- > 0) |
dc53a7ad | 16232 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 16233 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 16234 | } |
c906108c | 16235 | |
f5f8a009 EZ |
16236 | /* Understand Dwarf2 support for vector types (like they occur on |
16237 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16238 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16239 | custom vendor extension. The main difference between a regular | |
16240 | array and the vector variant is that vectors are passed by value | |
16241 | to functions. */ | |
e142c38c | 16242 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
435d3d88 | 16243 | if (attr != nullptr) |
ea37ba09 | 16244 | make_vector_type (type); |
f5f8a009 | 16245 | |
dbc98a8b KW |
16246 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16247 | implementation may choose to implement triple vectors using this | |
16248 | attribute. */ | |
16249 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16250 | if (attr != nullptr) |
dbc98a8b KW |
16251 | { |
16252 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16253 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16254 | else | |
b98664d3 | 16255 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 16256 | "than the total size of elements")); |
dbc98a8b KW |
16257 | } |
16258 | ||
39cbfefa DJ |
16259 | name = dwarf2_name (die, cu); |
16260 | if (name) | |
d0e39ea2 | 16261 | type->set_name (name); |
6e70227d | 16262 | |
2b4424c3 TT |
16263 | maybe_set_alignment (cu, die, type); |
16264 | ||
0963b4bd | 16265 | /* Install the type in the die. */ |
7e314c57 JK |
16266 | set_die_type (die, type, cu); |
16267 | ||
16268 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16269 | set_descriptive_type (type, die, cu); |
16270 | ||
7e314c57 | 16271 | return type; |
c906108c SS |
16272 | } |
16273 | ||
7ca2d3a3 | 16274 | static enum dwarf_array_dim_ordering |
6e70227d | 16275 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16276 | { |
16277 | struct attribute *attr; | |
16278 | ||
16279 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16280 | ||
435d3d88 | 16281 | if (attr != nullptr) |
aead7601 | 16282 | return (enum dwarf_array_dim_ordering) DW_SND (attr); |
7ca2d3a3 | 16283 | |
0963b4bd MS |
16284 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16285 | opposite order to the dwarf2 specification, but data is still | |
16286 | laid out as per normal fortran. | |
7ca2d3a3 | 16287 | |
0963b4bd MS |
16288 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16289 | version checking. */ | |
7ca2d3a3 | 16290 | |
905e0470 PM |
16291 | if (cu->language == language_fortran |
16292 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16293 | { |
16294 | return DW_ORD_row_major; | |
16295 | } | |
16296 | ||
6e70227d | 16297 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
16298 | { |
16299 | case array_column_major: | |
16300 | return DW_ORD_col_major; | |
16301 | case array_row_major: | |
16302 | default: | |
16303 | return DW_ORD_row_major; | |
16304 | }; | |
16305 | } | |
16306 | ||
72019c9c | 16307 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16308 | the DIE's type field. */ |
72019c9c | 16309 | |
f792889a | 16310 | static struct type * |
72019c9c GM |
16311 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16312 | { | |
7e314c57 JK |
16313 | struct type *domain_type, *set_type; |
16314 | struct attribute *attr; | |
f792889a | 16315 | |
7e314c57 JK |
16316 | domain_type = die_type (die, cu); |
16317 | ||
16318 | /* The die_type call above may have already set the type for this DIE. */ | |
16319 | set_type = get_die_type (die, cu); | |
16320 | if (set_type) | |
16321 | return set_type; | |
16322 | ||
16323 | set_type = create_set_type (NULL, domain_type); | |
16324 | ||
16325 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
435d3d88 | 16326 | if (attr != nullptr) |
d09039dd | 16327 | TYPE_LENGTH (set_type) = DW_UNSND (attr); |
7e314c57 | 16328 | |
2b4424c3 TT |
16329 | maybe_set_alignment (cu, die, set_type); |
16330 | ||
f792889a | 16331 | return set_die_type (die, set_type, cu); |
72019c9c | 16332 | } |
7ca2d3a3 | 16333 | |
0971de02 TT |
16334 | /* A helper for read_common_block that creates a locexpr baton. |
16335 | SYM is the symbol which we are marking as computed. | |
16336 | COMMON_DIE is the DIE for the common block. | |
16337 | COMMON_LOC is the location expression attribute for the common | |
16338 | block itself. | |
16339 | MEMBER_LOC is the location expression attribute for the particular | |
16340 | member of the common block that we are processing. | |
16341 | CU is the CU from which the above come. */ | |
16342 | ||
16343 | static void | |
16344 | mark_common_block_symbol_computed (struct symbol *sym, | |
16345 | struct die_info *common_die, | |
16346 | struct attribute *common_loc, | |
16347 | struct attribute *member_loc, | |
16348 | struct dwarf2_cu *cu) | |
16349 | { | |
5e22e966 | 16350 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 16351 | struct objfile *objfile = per_objfile->objfile; |
0971de02 TT |
16352 | struct dwarf2_locexpr_baton *baton; |
16353 | gdb_byte *ptr; | |
16354 | unsigned int cu_off; | |
08feed99 | 16355 | enum bfd_endian byte_order = gdbarch_byte_order (objfile->arch ()); |
0971de02 TT |
16356 | LONGEST offset = 0; |
16357 | ||
16358 | gdb_assert (common_loc && member_loc); | |
4fc6c0d5 TT |
16359 | gdb_assert (common_loc->form_is_block ()); |
16360 | gdb_assert (member_loc->form_is_block () | |
cd6c91b4 | 16361 | || member_loc->form_is_constant ()); |
0971de02 | 16362 | |
8d749320 | 16363 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
a50264ba | 16364 | baton->per_objfile = per_objfile; |
0971de02 TT |
16365 | baton->per_cu = cu->per_cu; |
16366 | gdb_assert (baton->per_cu); | |
16367 | ||
16368 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16369 | ||
cd6c91b4 | 16370 | if (member_loc->form_is_constant ()) |
0971de02 | 16371 | { |
0826b30a | 16372 | offset = member_loc->constant_value (0); |
0971de02 TT |
16373 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; |
16374 | } | |
16375 | else | |
16376 | baton->size += DW_BLOCK (member_loc)->size; | |
16377 | ||
224c3ddb | 16378 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16379 | baton->data = ptr; |
16380 | ||
16381 | *ptr++ = DW_OP_call4; | |
9c541725 | 16382 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16383 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16384 | ptr += 4; | |
16385 | ||
cd6c91b4 | 16386 | if (member_loc->form_is_constant ()) |
0971de02 TT |
16387 | { |
16388 | *ptr++ = DW_OP_addr; | |
16389 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16390 | ptr += cu->header.addr_size; | |
16391 | } | |
16392 | else | |
16393 | { | |
16394 | /* We have to copy the data here, because DW_OP_call4 will only | |
16395 | use a DW_AT_location attribute. */ | |
16396 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
16397 | ptr += DW_BLOCK (member_loc)->size; | |
16398 | } | |
16399 | ||
16400 | *ptr++ = DW_OP_plus; | |
16401 | gdb_assert (ptr - baton->data == baton->size); | |
16402 | ||
0971de02 | 16403 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16404 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
16405 | } |
16406 | ||
4357ac6c TT |
16407 | /* Create appropriate locally-scoped variables for all the |
16408 | DW_TAG_common_block entries. Also create a struct common_block | |
16409 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
85102364 | 16410 | is used to separate the common blocks name namespace from regular |
4357ac6c | 16411 | variable names. */ |
c906108c SS |
16412 | |
16413 | static void | |
e7c27a73 | 16414 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16415 | { |
0971de02 TT |
16416 | struct attribute *attr; |
16417 | ||
16418 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 16419 | if (attr != nullptr) |
0971de02 TT |
16420 | { |
16421 | /* Support the .debug_loc offsets. */ | |
4fc6c0d5 | 16422 | if (attr->form_is_block ()) |
0971de02 TT |
16423 | { |
16424 | /* Ok. */ | |
16425 | } | |
cd6c91b4 | 16426 | else if (attr->form_is_section_offset ()) |
0971de02 TT |
16427 | { |
16428 | dwarf2_complex_location_expr_complaint (); | |
16429 | attr = NULL; | |
16430 | } | |
16431 | else | |
16432 | { | |
16433 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
16434 | "common block member"); | |
16435 | attr = NULL; | |
16436 | } | |
16437 | } | |
16438 | ||
639d11d3 | 16439 | if (die->child != NULL) |
c906108c | 16440 | { |
5e22e966 | 16441 | struct objfile *objfile = cu->per_objfile->objfile; |
4357ac6c TT |
16442 | struct die_info *child_die; |
16443 | size_t n_entries = 0, size; | |
16444 | struct common_block *common_block; | |
16445 | struct symbol *sym; | |
74ac6d43 | 16446 | |
4357ac6c TT |
16447 | for (child_die = die->child; |
16448 | child_die && child_die->tag; | |
436c571c | 16449 | child_die = child_die->sibling) |
4357ac6c TT |
16450 | ++n_entries; |
16451 | ||
16452 | size = (sizeof (struct common_block) | |
16453 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
16454 | common_block |
16455 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
16456 | size); | |
4357ac6c TT |
16457 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
16458 | common_block->n_entries = 0; | |
16459 | ||
16460 | for (child_die = die->child; | |
16461 | child_die && child_die->tag; | |
436c571c | 16462 | child_die = child_die->sibling) |
4357ac6c TT |
16463 | { |
16464 | /* Create the symbol in the DW_TAG_common_block block in the current | |
16465 | symbol scope. */ | |
e7c27a73 | 16466 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
16467 | if (sym != NULL) |
16468 | { | |
16469 | struct attribute *member_loc; | |
16470 | ||
16471 | common_block->contents[common_block->n_entries++] = sym; | |
16472 | ||
16473 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
16474 | cu); | |
16475 | if (member_loc) | |
16476 | { | |
16477 | /* GDB has handled this for a long time, but it is | |
16478 | not specified by DWARF. It seems to have been | |
16479 | emitted by gfortran at least as recently as: | |
16480 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 16481 | complaint (_("Variable in common block has " |
0971de02 | 16482 | "DW_AT_data_member_location " |
9d8780f0 SM |
16483 | "- DIE at %s [in module %s]"), |
16484 | sect_offset_str (child_die->sect_off), | |
518817b3 | 16485 | objfile_name (objfile)); |
0971de02 | 16486 | |
cd6c91b4 | 16487 | if (member_loc->form_is_section_offset ()) |
0971de02 | 16488 | dwarf2_complex_location_expr_complaint (); |
cd6c91b4 | 16489 | else if (member_loc->form_is_constant () |
4fc6c0d5 | 16490 | || member_loc->form_is_block ()) |
0971de02 | 16491 | { |
435d3d88 | 16492 | if (attr != nullptr) |
0971de02 TT |
16493 | mark_common_block_symbol_computed (sym, die, attr, |
16494 | member_loc, cu); | |
16495 | } | |
16496 | else | |
16497 | dwarf2_complex_location_expr_complaint (); | |
16498 | } | |
16499 | } | |
c906108c | 16500 | } |
4357ac6c TT |
16501 | |
16502 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
16503 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
16504 | } |
16505 | } | |
16506 | ||
0114d602 | 16507 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 16508 | |
0114d602 DJ |
16509 | static struct type * |
16510 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 16511 | { |
5e22e966 | 16512 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 16513 | const char *previous_prefix, *name; |
9219021c | 16514 | int is_anonymous; |
0114d602 DJ |
16515 | struct type *type; |
16516 | ||
16517 | /* For extensions, reuse the type of the original namespace. */ | |
16518 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16519 | { | |
16520 | struct die_info *ext_die; | |
16521 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16522 | |
0114d602 DJ |
16523 | ext_die = dwarf2_extension (die, &ext_cu); |
16524 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16525 | |
16526 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16527 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16528 | return set_die_type (die, type, cu); |
16529 | } | |
9219021c | 16530 | |
e142c38c | 16531 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16532 | |
16533 | /* Now build the name of the current namespace. */ | |
16534 | ||
0114d602 DJ |
16535 | previous_prefix = determine_prefix (die, cu); |
16536 | if (previous_prefix[0] != '\0') | |
16537 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16538 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16539 | |
16540 | /* Create the type. */ | |
19f392bc | 16541 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 16542 | |
60531b24 | 16543 | return set_die_type (die, type, cu); |
0114d602 DJ |
16544 | } |
16545 | ||
22cee43f | 16546 | /* Read a namespace scope. */ |
0114d602 DJ |
16547 | |
16548 | static void | |
16549 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16550 | { | |
5e22e966 | 16551 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 16552 | int is_anonymous; |
9219021c | 16553 | |
5c4e30ca DC |
16554 | /* Add a symbol associated to this if we haven't seen the namespace |
16555 | before. Also, add a using directive if it's an anonymous | |
16556 | namespace. */ | |
9219021c | 16557 | |
f2f0e013 | 16558 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16559 | { |
16560 | struct type *type; | |
16561 | ||
0114d602 | 16562 | type = read_type_die (die, cu); |
e7c27a73 | 16563 | new_symbol (die, type, cu); |
5c4e30ca | 16564 | |
e8e80198 | 16565 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16566 | if (is_anonymous) |
0114d602 DJ |
16567 | { |
16568 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16569 | |
eb1e02fd | 16570 | std::vector<const char *> excludes; |
804d2729 | 16571 | add_using_directive (using_directives (cu), |
7d93a1e0 | 16572 | previous_prefix, type->name (), NULL, |
eb1e02fd | 16573 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16574 | } |
5c4e30ca | 16575 | } |
9219021c | 16576 | |
639d11d3 | 16577 | if (die->child != NULL) |
d9fa45fe | 16578 | { |
639d11d3 | 16579 | struct die_info *child_die = die->child; |
6e70227d | 16580 | |
d9fa45fe DC |
16581 | while (child_die && child_die->tag) |
16582 | { | |
e7c27a73 | 16583 | process_die (child_die, cu); |
436c571c | 16584 | child_die = child_die->sibling; |
d9fa45fe DC |
16585 | } |
16586 | } | |
38d518c9 EZ |
16587 | } |
16588 | ||
f55ee35c JK |
16589 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16590 | imported module. Still we need that type as local Fortran "use ... only" | |
16591 | declaration imports depend on the created type in determine_prefix. */ | |
16592 | ||
16593 | static struct type * | |
16594 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16595 | { | |
5e22e966 | 16596 | struct objfile *objfile = cu->per_objfile->objfile; |
15d034d0 | 16597 | const char *module_name; |
f55ee35c JK |
16598 | struct type *type; |
16599 | ||
16600 | module_name = dwarf2_name (die, cu); | |
19f392bc | 16601 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 16602 | |
f55ee35c JK |
16603 | return set_die_type (die, type, cu); |
16604 | } | |
16605 | ||
5d7cb8df JK |
16606 | /* Read a Fortran module. */ |
16607 | ||
16608 | static void | |
16609 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
16610 | { | |
16611 | struct die_info *child_die = die->child; | |
530e8392 KB |
16612 | struct type *type; |
16613 | ||
16614 | type = read_type_die (die, cu); | |
16615 | new_symbol (die, type, cu); | |
5d7cb8df | 16616 | |
5d7cb8df JK |
16617 | while (child_die && child_die->tag) |
16618 | { | |
16619 | process_die (child_die, cu); | |
436c571c | 16620 | child_die = child_die->sibling; |
5d7cb8df JK |
16621 | } |
16622 | } | |
16623 | ||
38d518c9 EZ |
16624 | /* Return the name of the namespace represented by DIE. Set |
16625 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
16626 | namespace. */ | |
16627 | ||
16628 | static const char * | |
e142c38c | 16629 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
16630 | { |
16631 | struct die_info *current_die; | |
16632 | const char *name = NULL; | |
16633 | ||
16634 | /* Loop through the extensions until we find a name. */ | |
16635 | ||
16636 | for (current_die = die; | |
16637 | current_die != NULL; | |
f2f0e013 | 16638 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 16639 | { |
96553a0c DE |
16640 | /* We don't use dwarf2_name here so that we can detect the absence |
16641 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 16642 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 16643 | |
38d518c9 EZ |
16644 | if (name != NULL) |
16645 | break; | |
16646 | } | |
16647 | ||
16648 | /* Is it an anonymous namespace? */ | |
16649 | ||
16650 | *is_anonymous = (name == NULL); | |
16651 | if (*is_anonymous) | |
2b1dbab0 | 16652 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
16653 | |
16654 | return name; | |
d9fa45fe DC |
16655 | } |
16656 | ||
c906108c SS |
16657 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
16658 | the user defined type vector. */ | |
16659 | ||
f792889a | 16660 | static struct type * |
e7c27a73 | 16661 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16662 | { |
5e22e966 | 16663 | struct gdbarch *gdbarch = cu->per_objfile->objfile->arch (); |
e7c27a73 | 16664 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 16665 | struct type *type; |
8b2dbe47 KB |
16666 | struct attribute *attr_byte_size; |
16667 | struct attribute *attr_address_class; | |
16668 | int byte_size, addr_class; | |
7e314c57 JK |
16669 | struct type *target_type; |
16670 | ||
16671 | target_type = die_type (die, cu); | |
c906108c | 16672 | |
7e314c57 JK |
16673 | /* The die_type call above may have already set the type for this DIE. */ |
16674 | type = get_die_type (die, cu); | |
16675 | if (type) | |
16676 | return type; | |
16677 | ||
16678 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 16679 | |
e142c38c | 16680 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
16681 | if (attr_byte_size) |
16682 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 16683 | else |
8b2dbe47 KB |
16684 | byte_size = cu_header->addr_size; |
16685 | ||
e142c38c | 16686 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
16687 | if (attr_address_class) |
16688 | addr_class = DW_UNSND (attr_address_class); | |
16689 | else | |
16690 | addr_class = DW_ADDR_none; | |
16691 | ||
2b4424c3 TT |
16692 | ULONGEST alignment = get_alignment (cu, die); |
16693 | ||
16694 | /* If the pointer size, alignment, or address class is different | |
16695 | than the default, create a type variant marked as such and set | |
16696 | the length accordingly. */ | |
16697 | if (TYPE_LENGTH (type) != byte_size | |
16698 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
16699 | && alignment != TYPE_RAW_ALIGN (type)) | |
16700 | || addr_class != DW_ADDR_none) | |
c906108c | 16701 | { |
5e2b427d | 16702 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
16703 | { |
16704 | int type_flags; | |
16705 | ||
849957d9 | 16706 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 16707 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
16708 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
16709 | == 0); | |
8b2dbe47 KB |
16710 | type = make_type_with_address_space (type, type_flags); |
16711 | } | |
16712 | else if (TYPE_LENGTH (type) != byte_size) | |
16713 | { | |
b98664d3 | 16714 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 16715 | } |
2b4424c3 TT |
16716 | else if (TYPE_RAW_ALIGN (type) != alignment) |
16717 | { | |
b98664d3 | 16718 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
16719 | " - DIE at %s [in module %s]"), |
16720 | sect_offset_str (die->sect_off), | |
5e22e966 | 16721 | objfile_name (cu->per_objfile->objfile)); |
2b4424c3 | 16722 | } |
6e70227d | 16723 | else |
9a619af0 MS |
16724 | { |
16725 | /* Should we also complain about unhandled address classes? */ | |
16726 | } | |
c906108c | 16727 | } |
8b2dbe47 KB |
16728 | |
16729 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 16730 | set_type_align (type, alignment); |
f792889a | 16731 | return set_die_type (die, type, cu); |
c906108c SS |
16732 | } |
16733 | ||
16734 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
16735 | the user defined type vector. */ | |
16736 | ||
f792889a | 16737 | static struct type * |
e7c27a73 | 16738 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
16739 | { |
16740 | struct type *type; | |
16741 | struct type *to_type; | |
16742 | struct type *domain; | |
16743 | ||
e7c27a73 DJ |
16744 | to_type = die_type (die, cu); |
16745 | domain = die_containing_type (die, cu); | |
0d5de010 | 16746 | |
7e314c57 JK |
16747 | /* The calls above may have already set the type for this DIE. */ |
16748 | type = get_die_type (die, cu); | |
16749 | if (type) | |
16750 | return type; | |
16751 | ||
78134374 | 16752 | if (check_typedef (to_type)->code () == TYPE_CODE_METHOD) |
0d5de010 | 16753 | type = lookup_methodptr_type (to_type); |
78134374 | 16754 | else if (check_typedef (to_type)->code () == TYPE_CODE_FUNC) |
7078baeb | 16755 | { |
5e22e966 | 16756 | struct type *new_type = alloc_type (cu->per_objfile->objfile); |
7078baeb TT |
16757 | |
16758 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
80fc5e77 | 16759 | to_type->fields (), to_type->num_fields (), |
7078baeb TT |
16760 | TYPE_VARARGS (to_type)); |
16761 | type = lookup_methodptr_type (new_type); | |
16762 | } | |
0d5de010 DJ |
16763 | else |
16764 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 16765 | |
f792889a | 16766 | return set_die_type (die, type, cu); |
c906108c SS |
16767 | } |
16768 | ||
4297a3f0 | 16769 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
16770 | the user defined type vector. */ |
16771 | ||
f792889a | 16772 | static struct type * |
4297a3f0 AV |
16773 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
16774 | enum type_code refcode) | |
c906108c | 16775 | { |
e7c27a73 | 16776 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 16777 | struct type *type, *target_type; |
c906108c SS |
16778 | struct attribute *attr; |
16779 | ||
4297a3f0 AV |
16780 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
16781 | ||
7e314c57 JK |
16782 | target_type = die_type (die, cu); |
16783 | ||
16784 | /* The die_type call above may have already set the type for this DIE. */ | |
16785 | type = get_die_type (die, cu); | |
16786 | if (type) | |
16787 | return type; | |
16788 | ||
4297a3f0 | 16789 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 16790 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 16791 | if (attr != nullptr) |
c906108c SS |
16792 | { |
16793 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16794 | } | |
16795 | else | |
16796 | { | |
107d2387 | 16797 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 16798 | } |
2b4424c3 | 16799 | maybe_set_alignment (cu, die, type); |
f792889a | 16800 | return set_die_type (die, type, cu); |
c906108c SS |
16801 | } |
16802 | ||
cf363f18 MW |
16803 | /* Add the given cv-qualifiers to the element type of the array. GCC |
16804 | outputs DWARF type qualifiers that apply to an array, not the | |
16805 | element type. But GDB relies on the array element type to carry | |
16806 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
16807 | specification. */ | |
16808 | ||
16809 | static struct type * | |
16810 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
16811 | struct type *base_type, int cnst, int voltl) | |
16812 | { | |
16813 | struct type *el_type, *inner_array; | |
16814 | ||
16815 | base_type = copy_type (base_type); | |
16816 | inner_array = base_type; | |
16817 | ||
78134374 | 16818 | while (TYPE_TARGET_TYPE (inner_array)->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
16819 | { |
16820 | TYPE_TARGET_TYPE (inner_array) = | |
16821 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
16822 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
16823 | } | |
16824 | ||
16825 | el_type = TYPE_TARGET_TYPE (inner_array); | |
16826 | cnst |= TYPE_CONST (el_type); | |
16827 | voltl |= TYPE_VOLATILE (el_type); | |
16828 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
16829 | ||
16830 | return set_die_type (die, base_type, cu); | |
16831 | } | |
16832 | ||
f792889a | 16833 | static struct type * |
e7c27a73 | 16834 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16835 | { |
f792889a | 16836 | struct type *base_type, *cv_type; |
c906108c | 16837 | |
e7c27a73 | 16838 | base_type = die_type (die, cu); |
7e314c57 JK |
16839 | |
16840 | /* The die_type call above may have already set the type for this DIE. */ | |
16841 | cv_type = get_die_type (die, cu); | |
16842 | if (cv_type) | |
16843 | return cv_type; | |
16844 | ||
2f608a3a KW |
16845 | /* In case the const qualifier is applied to an array type, the element type |
16846 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
78134374 | 16847 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 | 16848 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 16849 | |
f792889a DJ |
16850 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
16851 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16852 | } |
16853 | ||
f792889a | 16854 | static struct type * |
e7c27a73 | 16855 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16856 | { |
f792889a | 16857 | struct type *base_type, *cv_type; |
c906108c | 16858 | |
e7c27a73 | 16859 | base_type = die_type (die, cu); |
7e314c57 JK |
16860 | |
16861 | /* The die_type call above may have already set the type for this DIE. */ | |
16862 | cv_type = get_die_type (die, cu); | |
16863 | if (cv_type) | |
16864 | return cv_type; | |
16865 | ||
cf363f18 MW |
16866 | /* In case the volatile qualifier is applied to an array type, the |
16867 | element type is so qualified, not the array type (section 6.7.3 | |
16868 | of C99). */ | |
78134374 | 16869 | if (base_type->code () == TYPE_CODE_ARRAY) |
cf363f18 MW |
16870 | return add_array_cv_type (die, cu, base_type, 0, 1); |
16871 | ||
f792889a DJ |
16872 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
16873 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16874 | } |
16875 | ||
06d66ee9 TT |
16876 | /* Handle DW_TAG_restrict_type. */ |
16877 | ||
16878 | static struct type * | |
16879 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
16880 | { | |
16881 | struct type *base_type, *cv_type; | |
16882 | ||
16883 | base_type = die_type (die, cu); | |
16884 | ||
16885 | /* The die_type call above may have already set the type for this DIE. */ | |
16886 | cv_type = get_die_type (die, cu); | |
16887 | if (cv_type) | |
16888 | return cv_type; | |
16889 | ||
16890 | cv_type = make_restrict_type (base_type); | |
16891 | return set_die_type (die, cv_type, cu); | |
16892 | } | |
16893 | ||
a2c2acaf MW |
16894 | /* Handle DW_TAG_atomic_type. */ |
16895 | ||
16896 | static struct type * | |
16897 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
16898 | { | |
16899 | struct type *base_type, *cv_type; | |
16900 | ||
16901 | base_type = die_type (die, cu); | |
16902 | ||
16903 | /* The die_type call above may have already set the type for this DIE. */ | |
16904 | cv_type = get_die_type (die, cu); | |
16905 | if (cv_type) | |
16906 | return cv_type; | |
16907 | ||
16908 | cv_type = make_atomic_type (base_type); | |
16909 | return set_die_type (die, cv_type, cu); | |
16910 | } | |
16911 | ||
c906108c SS |
16912 | /* Extract all information from a DW_TAG_string_type DIE and add to |
16913 | the user defined type vector. It isn't really a user defined type, | |
16914 | but it behaves like one, with other DIE's using an AT_user_def_type | |
16915 | attribute to reference it. */ | |
16916 | ||
f792889a | 16917 | static struct type * |
e7c27a73 | 16918 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16919 | { |
5e22e966 | 16920 | struct objfile *objfile = cu->per_objfile->objfile; |
08feed99 | 16921 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c SS |
16922 | struct type *type, *range_type, *index_type, *char_type; |
16923 | struct attribute *attr; | |
216a7e6b AB |
16924 | struct dynamic_prop prop; |
16925 | bool length_is_constant = true; | |
16926 | LONGEST length; | |
16927 | ||
16928 | /* There are a couple of places where bit sizes might be made use of | |
16929 | when parsing a DW_TAG_string_type, however, no producer that we know | |
16930 | of make use of these. Handling bit sizes that are a multiple of the | |
16931 | byte size is easy enough, but what about other bit sizes? Lets deal | |
16932 | with that problem when we have to. Warn about these attributes being | |
16933 | unsupported, then parse the type and ignore them like we always | |
16934 | have. */ | |
16935 | if (dwarf2_attr (die, DW_AT_bit_size, cu) != nullptr | |
16936 | || dwarf2_attr (die, DW_AT_string_length_bit_size, cu) != nullptr) | |
16937 | { | |
16938 | static bool warning_printed = false; | |
16939 | if (!warning_printed) | |
16940 | { | |
16941 | warning (_("DW_AT_bit_size and DW_AT_string_length_bit_size not " | |
16942 | "currently supported on DW_TAG_string_type.")); | |
16943 | warning_printed = true; | |
16944 | } | |
16945 | } | |
c906108c | 16946 | |
e142c38c | 16947 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
cd6c91b4 | 16948 | if (attr != nullptr && !attr->form_is_constant ()) |
216a7e6b AB |
16949 | { |
16950 | /* The string length describes the location at which the length of | |
16951 | the string can be found. The size of the length field can be | |
16952 | specified with one of the attributes below. */ | |
16953 | struct type *prop_type; | |
16954 | struct attribute *len | |
16955 | = dwarf2_attr (die, DW_AT_string_length_byte_size, cu); | |
16956 | if (len == nullptr) | |
16957 | len = dwarf2_attr (die, DW_AT_byte_size, cu); | |
cd6c91b4 | 16958 | if (len != nullptr && len->form_is_constant ()) |
216a7e6b AB |
16959 | { |
16960 | /* Pass 0 as the default as we know this attribute is constant | |
16961 | and the default value will not be returned. */ | |
0826b30a | 16962 | LONGEST sz = len->constant_value (0); |
09ba997f | 16963 | prop_type = cu->per_cu->int_type (sz, true); |
216a7e6b AB |
16964 | } |
16965 | else | |
16966 | { | |
16967 | /* If the size is not specified then we assume it is the size of | |
16968 | an address on this target. */ | |
09ba997f | 16969 | prop_type = cu->per_cu->addr_sized_int_type (true); |
216a7e6b AB |
16970 | } |
16971 | ||
16972 | /* Convert the attribute into a dynamic property. */ | |
16973 | if (!attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) | |
16974 | length = 1; | |
16975 | else | |
16976 | length_is_constant = false; | |
16977 | } | |
16978 | else if (attr != nullptr) | |
16979 | { | |
16980 | /* This DW_AT_string_length just contains the length with no | |
16981 | indirection. There's no need to create a dynamic property in this | |
16982 | case. Pass 0 for the default value as we know it will not be | |
16983 | returned in this case. */ | |
0826b30a | 16984 | length = attr->constant_value (0); |
216a7e6b AB |
16985 | } |
16986 | else if ((attr = dwarf2_attr (die, DW_AT_byte_size, cu)) != nullptr) | |
c906108c | 16987 | { |
216a7e6b | 16988 | /* We don't currently support non-constant byte sizes for strings. */ |
0826b30a | 16989 | length = attr->constant_value (1); |
c906108c SS |
16990 | } |
16991 | else | |
16992 | { | |
216a7e6b AB |
16993 | /* Use 1 as a fallback length if we have nothing else. */ |
16994 | length = 1; | |
c906108c | 16995 | } |
6ccb9162 | 16996 | |
46bf5051 | 16997 | index_type = objfile_type (objfile)->builtin_int; |
216a7e6b AB |
16998 | if (length_is_constant) |
16999 | range_type = create_static_range_type (NULL, index_type, 1, length); | |
17000 | else | |
17001 | { | |
17002 | struct dynamic_prop low_bound; | |
17003 | ||
17004 | low_bound.kind = PROP_CONST; | |
17005 | low_bound.data.const_val = 1; | |
17006 | range_type = create_range_type (NULL, index_type, &low_bound, &prop, 0); | |
17007 | } | |
3b7538c0 UW |
17008 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17009 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17010 | |
f792889a | 17011 | return set_die_type (die, type, cu); |
c906108c SS |
17012 | } |
17013 | ||
4d804846 JB |
17014 | /* Assuming that DIE corresponds to a function, returns nonzero |
17015 | if the function is prototyped. */ | |
17016 | ||
17017 | static int | |
17018 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17019 | { | |
17020 | struct attribute *attr; | |
17021 | ||
17022 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
17023 | if (attr && (DW_UNSND (attr) != 0)) | |
17024 | return 1; | |
17025 | ||
17026 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
85102364 | 17027 | is only meaningful for C, but the concept also extends to other |
4d804846 JB |
17028 | languages that allow unprototyped functions (Eg: Objective C). |
17029 | For all other languages, assume that functions are always | |
17030 | prototyped. */ | |
17031 | if (cu->language != language_c | |
17032 | && cu->language != language_objc | |
17033 | && cu->language != language_opencl) | |
17034 | return 1; | |
17035 | ||
17036 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17037 | prototyped and unprototyped functions; default to prototyped, | |
17038 | since that is more common in modern code (and RealView warns | |
17039 | about unprototyped functions). */ | |
17040 | if (producer_is_realview (cu->producer)) | |
17041 | return 1; | |
17042 | ||
17043 | return 0; | |
17044 | } | |
17045 | ||
c906108c SS |
17046 | /* Handle DIES due to C code like: |
17047 | ||
17048 | struct foo | |
c5aa993b JM |
17049 | { |
17050 | int (*funcp)(int a, long l); | |
17051 | int b; | |
17052 | }; | |
c906108c | 17053 | |
0963b4bd | 17054 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17055 | |
f792889a | 17056 | static struct type * |
e7c27a73 | 17057 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17058 | { |
5e22e966 | 17059 | struct objfile *objfile = cu->per_objfile->objfile; |
0963b4bd MS |
17060 | struct type *type; /* Type that this function returns. */ |
17061 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17062 | struct attribute *attr; |
17063 | ||
e7c27a73 | 17064 | type = die_type (die, cu); |
7e314c57 JK |
17065 | |
17066 | /* The die_type call above may have already set the type for this DIE. */ | |
17067 | ftype = get_die_type (die, cu); | |
17068 | if (ftype) | |
17069 | return ftype; | |
17070 | ||
0c8b41f1 | 17071 | ftype = lookup_function_type (type); |
c906108c | 17072 | |
4d804846 | 17073 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 17074 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 17075 | |
c055b101 CV |
17076 | /* Store the calling convention in the type if it's available in |
17077 | the subroutine die. Otherwise set the calling convention to | |
17078 | the default value DW_CC_normal. */ | |
17079 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
d0922fcf TBA |
17080 | if (attr != nullptr |
17081 | && is_valid_DW_AT_calling_convention_for_subroutine (DW_UNSND (attr))) | |
17082 | TYPE_CALLING_CONVENTION (ftype) | |
17083 | = (enum dwarf_calling_convention) (DW_UNSND (attr)); | |
54fcddd0 UW |
17084 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) |
17085 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17086 | else | |
17087 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17088 | |
743649fd MW |
17089 | /* Record whether the function returns normally to its caller or not |
17090 | if the DWARF producer set that information. */ | |
17091 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
17092 | if (attr && (DW_UNSND (attr) != 0)) | |
17093 | TYPE_NO_RETURN (ftype) = 1; | |
17094 | ||
76c10ea2 GM |
17095 | /* We need to add the subroutine type to the die immediately so |
17096 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17097 | declared as the same subroutine type. */ |
76c10ea2 | 17098 | set_die_type (die, ftype, cu); |
6e70227d | 17099 | |
639d11d3 | 17100 | if (die->child != NULL) |
c906108c | 17101 | { |
bb5ed363 | 17102 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17103 | struct die_info *child_die; |
8072405b | 17104 | int nparams, iparams; |
c906108c SS |
17105 | |
17106 | /* Count the number of parameters. | |
17107 | FIXME: GDB currently ignores vararg functions, but knows about | |
17108 | vararg member functions. */ | |
8072405b | 17109 | nparams = 0; |
639d11d3 | 17110 | child_die = die->child; |
c906108c SS |
17111 | while (child_die && child_die->tag) |
17112 | { | |
17113 | if (child_die->tag == DW_TAG_formal_parameter) | |
17114 | nparams++; | |
17115 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 17116 | TYPE_VARARGS (ftype) = 1; |
436c571c | 17117 | child_die = child_die->sibling; |
c906108c SS |
17118 | } |
17119 | ||
17120 | /* Allocate storage for parameters and fill them in. */ | |
5e33d5f4 | 17121 | ftype->set_num_fields (nparams); |
3cabb6b0 SM |
17122 | ftype->set_fields |
17123 | ((struct field *) TYPE_ZALLOC (ftype, nparams * sizeof (struct field))); | |
c906108c | 17124 | |
8072405b JK |
17125 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17126 | even if we error out during the parameters reading below. */ | |
17127 | for (iparams = 0; iparams < nparams; iparams++) | |
17128 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
17129 | ||
17130 | iparams = 0; | |
639d11d3 | 17131 | child_die = die->child; |
c906108c SS |
17132 | while (child_die && child_die->tag) |
17133 | { | |
17134 | if (child_die->tag == DW_TAG_formal_parameter) | |
17135 | { | |
3ce3b1ba PA |
17136 | struct type *arg_type; |
17137 | ||
17138 | /* DWARF version 2 has no clean way to discern C++ | |
17139 | static and non-static member functions. G++ helps | |
17140 | GDB by marking the first parameter for non-static | |
17141 | member functions (which is the this pointer) as | |
17142 | artificial. We pass this information to | |
17143 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17144 | ||
17145 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17146 | 4.5 does not yet generate. */ | |
e142c38c | 17147 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
435d3d88 | 17148 | if (attr != nullptr) |
c906108c SS |
17149 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); |
17150 | else | |
9c37b5ae | 17151 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17152 | arg_type = die_type (child_die, cu); |
17153 | ||
17154 | /* RealView does not mark THIS as const, which the testsuite | |
17155 | expects. GCC marks THIS as const in method definitions, | |
17156 | but not in the class specifications (GCC PR 43053). */ | |
17157 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17158 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17159 | { | |
17160 | int is_this = 0; | |
17161 | struct dwarf2_cu *arg_cu = cu; | |
17162 | const char *name = dwarf2_name (child_die, cu); | |
17163 | ||
17164 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
435d3d88 | 17165 | if (attr != nullptr) |
3ce3b1ba PA |
17166 | { |
17167 | /* If the compiler emits this, use it. */ | |
17168 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17169 | is_this = 1; | |
17170 | } | |
17171 | else if (name && strcmp (name, "this") == 0) | |
17172 | /* Function definitions will have the argument names. */ | |
17173 | is_this = 1; | |
17174 | else if (name == NULL && iparams == 0) | |
17175 | /* Declarations may not have the names, so like | |
17176 | elsewhere in GDB, assume an artificial first | |
17177 | argument is "this". */ | |
17178 | is_this = 1; | |
17179 | ||
17180 | if (is_this) | |
17181 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17182 | arg_type, 0); | |
17183 | } | |
17184 | ||
17185 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
17186 | iparams++; |
17187 | } | |
436c571c | 17188 | child_die = child_die->sibling; |
c906108c SS |
17189 | } |
17190 | } | |
17191 | ||
76c10ea2 | 17192 | return ftype; |
c906108c SS |
17193 | } |
17194 | ||
f792889a | 17195 | static struct type * |
e7c27a73 | 17196 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17197 | { |
5e22e966 | 17198 | struct objfile *objfile = cu->per_objfile->objfile; |
0114d602 | 17199 | const char *name = NULL; |
3c8e0968 | 17200 | struct type *this_type, *target_type; |
c906108c | 17201 | |
94af9270 | 17202 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
17203 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
17204 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 17205 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17206 | target_type = die_type (die, cu); |
17207 | if (target_type != this_type) | |
17208 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17209 | else | |
17210 | { | |
17211 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17212 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 17213 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
17214 | "- DIE at %s [in module %s]"), |
17215 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17216 | TYPE_TARGET_TYPE (this_type) = NULL; |
17217 | } | |
e4003a34 TV |
17218 | if (name == NULL) |
17219 | { | |
17220 | /* Gcc-7 and before supports -feliminate-dwarf2-dups, which generates | |
17221 | anonymous typedefs, which is, strictly speaking, invalid DWARF. | |
17222 | Handle these by just returning the target type, rather than | |
17223 | constructing an anonymous typedef type and trying to handle this | |
17224 | elsewhere. */ | |
17225 | set_die_type (die, target_type, cu); | |
17226 | return target_type; | |
17227 | } | |
f792889a | 17228 | return this_type; |
c906108c SS |
17229 | } |
17230 | ||
9b790ce7 UW |
17231 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17232 | (which may be different from NAME) to the architecture back-end to allow | |
17233 | it to guess the correct format if necessary. */ | |
17234 | ||
17235 | static struct type * | |
17236 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
103a685e | 17237 | const char *name_hint, enum bfd_endian byte_order) |
9b790ce7 | 17238 | { |
08feed99 | 17239 | struct gdbarch *gdbarch = objfile->arch (); |
9b790ce7 UW |
17240 | const struct floatformat **format; |
17241 | struct type *type; | |
17242 | ||
17243 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17244 | if (format) | |
103a685e | 17245 | type = init_float_type (objfile, bits, name, format, byte_order); |
9b790ce7 | 17246 | else |
77b7c781 | 17247 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17248 | |
17249 | return type; | |
17250 | } | |
17251 | ||
eb77c9df AB |
17252 | /* Allocate an integer type of size BITS and name NAME. */ |
17253 | ||
17254 | static struct type * | |
17255 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
17256 | int bits, int unsigned_p, const char *name) | |
17257 | { | |
17258 | struct type *type; | |
17259 | ||
17260 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
17261 | instead of using DW_TAG_unspecified_type. This has been seen on | |
17262 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
17263 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
17264 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
17265 | type = objfile_type (objfile)->builtin_void; |
17266 | else | |
17267 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
17268 | ||
17269 | return type; | |
17270 | } | |
17271 | ||
8bdc1658 AB |
17272 | /* Initialise and return a floating point type of size BITS suitable for |
17273 | use as a component of a complex number. The NAME_HINT is passed through | |
17274 | when initialising the floating point type and is the name of the complex | |
17275 | type. | |
17276 | ||
17277 | As DWARF doesn't currently provide an explicit name for the components | |
17278 | of a complex number, but it can be helpful to have these components | |
17279 | named, we try to select a suitable name based on the size of the | |
17280 | component. */ | |
17281 | static struct type * | |
17282 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
17283 | struct objfile *objfile, | |
103a685e TT |
17284 | int bits, const char *name_hint, |
17285 | enum bfd_endian byte_order) | |
8bdc1658 | 17286 | { |
08feed99 | 17287 | gdbarch *gdbarch = objfile->arch (); |
8bdc1658 AB |
17288 | struct type *tt = nullptr; |
17289 | ||
35add35e AB |
17290 | /* Try to find a suitable floating point builtin type of size BITS. |
17291 | We're going to use the name of this type as the name for the complex | |
17292 | target type that we are about to create. */ | |
1db455a7 | 17293 | switch (cu->language) |
8bdc1658 | 17294 | { |
1db455a7 AB |
17295 | case language_fortran: |
17296 | switch (bits) | |
17297 | { | |
17298 | case 32: | |
17299 | tt = builtin_f_type (gdbarch)->builtin_real; | |
17300 | break; | |
17301 | case 64: | |
17302 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
17303 | break; | |
17304 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17305 | case 128: | |
17306 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
17307 | break; | |
17308 | } | |
8bdc1658 | 17309 | break; |
1db455a7 AB |
17310 | default: |
17311 | switch (bits) | |
17312 | { | |
17313 | case 32: | |
17314 | tt = builtin_type (gdbarch)->builtin_float; | |
17315 | break; | |
17316 | case 64: | |
17317 | tt = builtin_type (gdbarch)->builtin_double; | |
17318 | break; | |
17319 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17320 | case 128: | |
17321 | tt = builtin_type (gdbarch)->builtin_long_double; | |
17322 | break; | |
17323 | } | |
8bdc1658 AB |
17324 | break; |
17325 | } | |
17326 | ||
35add35e AB |
17327 | /* If the type we found doesn't match the size we were looking for, then |
17328 | pretend we didn't find a type at all, the complex target type we | |
17329 | create will then be nameless. */ | |
a12e5744 | 17330 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
17331 | tt = nullptr; |
17332 | ||
7d93a1e0 | 17333 | const char *name = (tt == nullptr) ? nullptr : tt->name (); |
103a685e | 17334 | return dwarf2_init_float_type (objfile, bits, name, name_hint, byte_order); |
8bdc1658 AB |
17335 | } |
17336 | ||
c906108c SS |
17337 | /* Find a representation of a given base type and install |
17338 | it in the TYPE field of the die. */ | |
17339 | ||
f792889a | 17340 | static struct type * |
e7c27a73 | 17341 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17342 | { |
5e22e966 | 17343 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c SS |
17344 | struct type *type; |
17345 | struct attribute *attr; | |
19f392bc | 17346 | int encoding = 0, bits = 0; |
15d034d0 | 17347 | const char *name; |
34877895 | 17348 | gdbarch *arch; |
c906108c | 17349 | |
e142c38c | 17350 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
435d3d88 | 17351 | if (attr != nullptr) |
34877895 | 17352 | encoding = DW_UNSND (attr); |
e142c38c | 17353 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17354 | if (attr != nullptr) |
34877895 | 17355 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
39cbfefa | 17356 | name = dwarf2_name (die, cu); |
6ccb9162 | 17357 | if (!name) |
34877895 | 17358 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
103a685e | 17359 | |
08feed99 | 17360 | arch = objfile->arch (); |
103a685e TT |
17361 | enum bfd_endian byte_order = gdbarch_byte_order (arch); |
17362 | ||
34877895 PJ |
17363 | attr = dwarf2_attr (die, DW_AT_endianity, cu); |
17364 | if (attr) | |
103a685e TT |
17365 | { |
17366 | int endianity = DW_UNSND (attr); | |
17367 | ||
17368 | switch (endianity) | |
17369 | { | |
17370 | case DW_END_big: | |
17371 | byte_order = BFD_ENDIAN_BIG; | |
17372 | break; | |
17373 | case DW_END_little: | |
17374 | byte_order = BFD_ENDIAN_LITTLE; | |
17375 | break; | |
17376 | default: | |
17377 | complaint (_("DW_AT_endianity has unrecognized value %d"), endianity); | |
17378 | break; | |
17379 | } | |
17380 | } | |
6ccb9162 UW |
17381 | |
17382 | switch (encoding) | |
c906108c | 17383 | { |
6ccb9162 UW |
17384 | case DW_ATE_address: |
17385 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17386 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17387 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17388 | break; |
17389 | case DW_ATE_boolean: | |
19f392bc | 17390 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17391 | break; |
17392 | case DW_ATE_complex_float: | |
103a685e TT |
17393 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name, |
17394 | byte_order); | |
78134374 | 17395 | if (type->code () == TYPE_CODE_ERROR) |
93689ce9 TT |
17396 | { |
17397 | if (name == nullptr) | |
17398 | { | |
17399 | struct obstack *obstack | |
5e22e966 | 17400 | = &cu->per_objfile->objfile->objfile_obstack; |
7d93a1e0 | 17401 | name = obconcat (obstack, "_Complex ", type->name (), |
93689ce9 TT |
17402 | nullptr); |
17403 | } | |
17404 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); | |
17405 | } | |
17406 | else | |
17407 | type = init_complex_type (name, type); | |
6ccb9162 UW |
17408 | break; |
17409 | case DW_ATE_decimal_float: | |
19f392bc | 17410 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
17411 | break; |
17412 | case DW_ATE_float: | |
103a685e | 17413 | type = dwarf2_init_float_type (objfile, bits, name, name, byte_order); |
6ccb9162 UW |
17414 | break; |
17415 | case DW_ATE_signed: | |
eb77c9df | 17416 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17417 | break; |
17418 | case DW_ATE_unsigned: | |
3b2b8fea TT |
17419 | if (cu->language == language_fortran |
17420 | && name | |
61012eef | 17421 | && startswith (name, "character(")) |
19f392bc UW |
17422 | type = init_character_type (objfile, bits, 1, name); |
17423 | else | |
eb77c9df | 17424 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
17425 | break; |
17426 | case DW_ATE_signed_char: | |
6e70227d | 17427 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
17428 | || cu->language == language_pascal |
17429 | || cu->language == language_fortran) | |
19f392bc UW |
17430 | type = init_character_type (objfile, bits, 0, name); |
17431 | else | |
eb77c9df | 17432 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17433 | break; |
17434 | case DW_ATE_unsigned_char: | |
868a0084 | 17435 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 17436 | || cu->language == language_pascal |
c44af4eb TT |
17437 | || cu->language == language_fortran |
17438 | || cu->language == language_rust) | |
19f392bc UW |
17439 | type = init_character_type (objfile, bits, 1, name); |
17440 | else | |
eb77c9df | 17441 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 17442 | break; |
75079b2b | 17443 | case DW_ATE_UTF: |
53e710ac | 17444 | { |
53e710ac PA |
17445 | if (bits == 16) |
17446 | type = builtin_type (arch)->builtin_char16; | |
17447 | else if (bits == 32) | |
17448 | type = builtin_type (arch)->builtin_char32; | |
17449 | else | |
17450 | { | |
b98664d3 | 17451 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 17452 | bits); |
eb77c9df | 17453 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
17454 | } |
17455 | return set_die_type (die, type, cu); | |
17456 | } | |
75079b2b TT |
17457 | break; |
17458 | ||
6ccb9162 | 17459 | default: |
b98664d3 | 17460 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 17461 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 17462 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17463 | break; |
c906108c | 17464 | } |
6ccb9162 | 17465 | |
0114d602 | 17466 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17467 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17468 | |
2b4424c3 TT |
17469 | maybe_set_alignment (cu, die, type); |
17470 | ||
103a685e | 17471 | TYPE_ENDIANITY_NOT_DEFAULT (type) = gdbarch_byte_order (arch) != byte_order; |
34877895 | 17472 | |
f792889a | 17473 | return set_die_type (die, type, cu); |
c906108c SS |
17474 | } |
17475 | ||
80180f79 SA |
17476 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17477 | resulting value of the attribute into struct bound_prop. | |
17478 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17479 | ||
17480 | static int | |
17481 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
9a49df9d AB |
17482 | struct dwarf2_cu *cu, struct dynamic_prop *prop, |
17483 | struct type *default_type) | |
80180f79 SA |
17484 | { |
17485 | struct dwarf2_property_baton *baton; | |
5e22e966 | 17486 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba TT |
17487 | struct objfile *objfile = per_objfile->objfile; |
17488 | struct obstack *obstack = &objfile->objfile_obstack; | |
80180f79 | 17489 | |
9a49df9d AB |
17490 | gdb_assert (default_type != NULL); |
17491 | ||
80180f79 SA |
17492 | if (attr == NULL || prop == NULL) |
17493 | return 0; | |
17494 | ||
4fc6c0d5 | 17495 | if (attr->form_is_block ()) |
80180f79 | 17496 | { |
8d749320 | 17497 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17498 | baton->property_type = default_type; |
80180f79 | 17499 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 17500 | baton->locexpr.per_objfile = per_objfile; |
80180f79 SA |
17501 | baton->locexpr.size = DW_BLOCK (attr)->size; |
17502 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
216a7e6b AB |
17503 | switch (attr->name) |
17504 | { | |
17505 | case DW_AT_string_length: | |
17506 | baton->locexpr.is_reference = true; | |
17507 | break; | |
17508 | default: | |
17509 | baton->locexpr.is_reference = false; | |
17510 | break; | |
17511 | } | |
80180f79 SA |
17512 | prop->data.baton = baton; |
17513 | prop->kind = PROP_LOCEXPR; | |
17514 | gdb_assert (prop->data.baton != NULL); | |
17515 | } | |
cd6c91b4 | 17516 | else if (attr->form_is_ref ()) |
80180f79 SA |
17517 | { |
17518 | struct dwarf2_cu *target_cu = cu; | |
17519 | struct die_info *target_die; | |
17520 | struct attribute *target_attr; | |
17521 | ||
17522 | target_die = follow_die_ref (die, attr, &target_cu); | |
17523 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17524 | if (target_attr == NULL) |
17525 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17526 | target_cu); | |
80180f79 SA |
17527 | if (target_attr == NULL) |
17528 | return 0; | |
17529 | ||
df25ebbd | 17530 | switch (target_attr->name) |
80180f79 | 17531 | { |
df25ebbd | 17532 | case DW_AT_location: |
cd6c91b4 | 17533 | if (target_attr->form_is_section_offset ()) |
df25ebbd | 17534 | { |
8d749320 | 17535 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17536 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd JB |
17537 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); |
17538 | prop->data.baton = baton; | |
17539 | prop->kind = PROP_LOCLIST; | |
17540 | gdb_assert (prop->data.baton != NULL); | |
17541 | } | |
4fc6c0d5 | 17542 | else if (target_attr->form_is_block ()) |
df25ebbd | 17543 | { |
8d749320 | 17544 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17545 | baton->property_type = die_type (target_die, target_cu); |
df25ebbd | 17546 | baton->locexpr.per_cu = cu->per_cu; |
a50264ba | 17547 | baton->locexpr.per_objfile = per_objfile; |
df25ebbd JB |
17548 | baton->locexpr.size = DW_BLOCK (target_attr)->size; |
17549 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
9a49df9d | 17550 | baton->locexpr.is_reference = true; |
df25ebbd JB |
17551 | prop->data.baton = baton; |
17552 | prop->kind = PROP_LOCEXPR; | |
17553 | gdb_assert (prop->data.baton != NULL); | |
17554 | } | |
17555 | else | |
17556 | { | |
17557 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17558 | "dynamic property"); | |
17559 | return 0; | |
17560 | } | |
17561 | break; | |
17562 | case DW_AT_data_member_location: | |
17563 | { | |
17564 | LONGEST offset; | |
17565 | ||
17566 | if (!handle_data_member_location (target_die, target_cu, | |
17567 | &offset)) | |
17568 | return 0; | |
17569 | ||
8d749320 | 17570 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
9a49df9d | 17571 | baton->property_type = read_type_die (target_die->parent, |
6ad395a7 | 17572 | target_cu); |
df25ebbd JB |
17573 | baton->offset_info.offset = offset; |
17574 | baton->offset_info.type = die_type (target_die, target_cu); | |
17575 | prop->data.baton = baton; | |
17576 | prop->kind = PROP_ADDR_OFFSET; | |
17577 | break; | |
17578 | } | |
80180f79 SA |
17579 | } |
17580 | } | |
cd6c91b4 | 17581 | else if (attr->form_is_constant ()) |
80180f79 | 17582 | { |
0826b30a | 17583 | prop->data.const_val = attr->constant_value (0); |
80180f79 SA |
17584 | prop->kind = PROP_CONST; |
17585 | } | |
17586 | else | |
17587 | { | |
17588 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
17589 | dwarf2_name (die, cu)); | |
17590 | return 0; | |
17591 | } | |
17592 | ||
17593 | return 1; | |
17594 | } | |
17595 | ||
09ba997f | 17596 | /* See read.h. */ |
9a49df9d | 17597 | |
09ba997f TT |
17598 | struct type * |
17599 | dwarf2_per_cu_data::int_type (int size_in_bytes, bool unsigned_p) const | |
9a49df9d | 17600 | { |
09ba997f | 17601 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
9a49df9d AB |
17602 | struct type *int_type; |
17603 | ||
17604 | /* Helper macro to examine the various builtin types. */ | |
11a8b164 AB |
17605 | #define TRY_TYPE(F) \ |
17606 | int_type = (unsigned_p \ | |
17607 | ? objfile_type (objfile)->builtin_unsigned_ ## F \ | |
17608 | : objfile_type (objfile)->builtin_ ## F); \ | |
17609 | if (int_type != NULL && TYPE_LENGTH (int_type) == size_in_bytes) \ | |
9a49df9d AB |
17610 | return int_type |
17611 | ||
17612 | TRY_TYPE (char); | |
17613 | TRY_TYPE (short); | |
17614 | TRY_TYPE (int); | |
17615 | TRY_TYPE (long); | |
17616 | TRY_TYPE (long_long); | |
17617 | ||
17618 | #undef TRY_TYPE | |
17619 | ||
17620 | gdb_assert_not_reached ("unable to find suitable integer type"); | |
17621 | } | |
17622 | ||
09ba997f | 17623 | /* See read.h. */ |
11a8b164 | 17624 | |
09ba997f TT |
17625 | struct type * |
17626 | dwarf2_per_cu_data::addr_sized_int_type (bool unsigned_p) const | |
11a8b164 | 17627 | { |
09ba997f TT |
17628 | int addr_size = this->addr_size (); |
17629 | return int_type (addr_size, unsigned_p); | |
11a8b164 AB |
17630 | } |
17631 | ||
b86352cf AB |
17632 | /* Read the DW_AT_type attribute for a sub-range. If this attribute is not |
17633 | present (which is valid) then compute the default type based on the | |
17634 | compilation units address size. */ | |
17635 | ||
17636 | static struct type * | |
17637 | read_subrange_index_type (struct die_info *die, struct dwarf2_cu *cu) | |
17638 | { | |
17639 | struct type *index_type = die_type (die, cu); | |
17640 | ||
17641 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
17642 | without specifying a base type. | |
17643 | In that case, the base type must be set to the type of | |
17644 | the lower bound, upper bound or count, in that order, if any of these | |
17645 | three attributes references an object that has a type. | |
17646 | If no base type is found, the Dwarf-2 specifications say that | |
17647 | a signed integer type of size equal to the size of an address should | |
17648 | be used. | |
17649 | For the following C code: `extern char gdb_int [];' | |
17650 | GCC produces an empty range DIE. | |
17651 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
17652 | high bound or count are not yet handled by this code. */ | |
78134374 | 17653 | if (index_type->code () == TYPE_CODE_VOID) |
09ba997f | 17654 | index_type = cu->per_cu->addr_sized_int_type (false); |
b86352cf AB |
17655 | |
17656 | return index_type; | |
17657 | } | |
17658 | ||
a02abb62 JB |
17659 | /* Read the given DW_AT_subrange DIE. */ |
17660 | ||
f792889a | 17661 | static struct type * |
a02abb62 JB |
17662 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
17663 | { | |
4c9ad8c2 | 17664 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
17665 | struct type *range_type; |
17666 | struct attribute *attr; | |
729efb13 | 17667 | struct dynamic_prop low, high; |
4fae6e18 | 17668 | int low_default_is_valid; |
c451ebe5 | 17669 | int high_bound_is_count = 0; |
15d034d0 | 17670 | const char *name; |
d359392f | 17671 | ULONGEST negative_mask; |
e77813c8 | 17672 | |
b86352cf AB |
17673 | orig_base_type = read_subrange_index_type (die, cu); |
17674 | ||
4c9ad8c2 TT |
17675 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, |
17676 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
17677 | creating the range type, but we use the result of check_typedef | |
17678 | when examining properties of the type. */ | |
17679 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 17680 | |
7e314c57 JK |
17681 | /* The die_type call above may have already set the type for this DIE. */ |
17682 | range_type = get_die_type (die, cu); | |
17683 | if (range_type) | |
17684 | return range_type; | |
17685 | ||
729efb13 SA |
17686 | low.kind = PROP_CONST; |
17687 | high.kind = PROP_CONST; | |
17688 | high.data.const_val = 0; | |
17689 | ||
4fae6e18 JK |
17690 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
17691 | omitting DW_AT_lower_bound. */ | |
17692 | switch (cu->language) | |
6e70227d | 17693 | { |
4fae6e18 JK |
17694 | case language_c: |
17695 | case language_cplus: | |
729efb13 | 17696 | low.data.const_val = 0; |
4fae6e18 JK |
17697 | low_default_is_valid = 1; |
17698 | break; | |
17699 | case language_fortran: | |
729efb13 | 17700 | low.data.const_val = 1; |
4fae6e18 JK |
17701 | low_default_is_valid = 1; |
17702 | break; | |
17703 | case language_d: | |
4fae6e18 | 17704 | case language_objc: |
c44af4eb | 17705 | case language_rust: |
729efb13 | 17706 | low.data.const_val = 0; |
4fae6e18 JK |
17707 | low_default_is_valid = (cu->header.version >= 4); |
17708 | break; | |
17709 | case language_ada: | |
17710 | case language_m2: | |
17711 | case language_pascal: | |
729efb13 | 17712 | low.data.const_val = 1; |
4fae6e18 JK |
17713 | low_default_is_valid = (cu->header.version >= 4); |
17714 | break; | |
17715 | default: | |
729efb13 | 17716 | low.data.const_val = 0; |
4fae6e18 JK |
17717 | low_default_is_valid = 0; |
17718 | break; | |
a02abb62 JB |
17719 | } |
17720 | ||
e142c38c | 17721 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
435d3d88 | 17722 | if (attr != nullptr) |
9a49df9d | 17723 | attr_to_dynamic_prop (attr, die, cu, &low, base_type); |
4fae6e18 | 17724 | else if (!low_default_is_valid) |
b98664d3 | 17725 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
17726 | "- DIE at %s [in module %s]"), |
17727 | sect_offset_str (die->sect_off), | |
5e22e966 | 17728 | objfile_name (cu->per_objfile->objfile)); |
a02abb62 | 17729 | |
506f5c41 TV |
17730 | struct attribute *attr_ub, *attr_count; |
17731 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
9a49df9d | 17732 | if (!attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
e77813c8 | 17733 | { |
506f5c41 | 17734 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
9a49df9d | 17735 | if (attr_to_dynamic_prop (attr, die, cu, &high, base_type)) |
6b662e19 | 17736 | { |
c451ebe5 SA |
17737 | /* If bounds are constant do the final calculation here. */ |
17738 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
17739 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
17740 | else | |
17741 | high_bound_is_count = 1; | |
c2ff108b | 17742 | } |
506f5c41 TV |
17743 | else |
17744 | { | |
17745 | if (attr_ub != NULL) | |
17746 | complaint (_("Unresolved DW_AT_upper_bound " | |
17747 | "- DIE at %s [in module %s]"), | |
17748 | sect_offset_str (die->sect_off), | |
5e22e966 | 17749 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 TV |
17750 | if (attr_count != NULL) |
17751 | complaint (_("Unresolved DW_AT_count " | |
17752 | "- DIE at %s [in module %s]"), | |
17753 | sect_offset_str (die->sect_off), | |
5e22e966 | 17754 | objfile_name (cu->per_objfile->objfile)); |
506f5c41 | 17755 | } |
e77813c8 | 17756 | } |
a02abb62 | 17757 | |
4e962e74 TT |
17758 | LONGEST bias = 0; |
17759 | struct attribute *bias_attr = dwarf2_attr (die, DW_AT_GNU_bias, cu); | |
cd6c91b4 | 17760 | if (bias_attr != nullptr && bias_attr->form_is_constant ()) |
0826b30a | 17761 | bias = bias_attr->constant_value (0); |
4e962e74 | 17762 | |
dbb9c2b1 JB |
17763 | /* Normally, the DWARF producers are expected to use a signed |
17764 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
17765 | But this is unfortunately not always the case, as witnessed | |
17766 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
17767 | is used instead. To work around that ambiguity, we treat | |
17768 | the bounds as signed, and thus sign-extend their values, when | |
17769 | the base type is signed. */ | |
6e70227d | 17770 | negative_mask = |
d359392f | 17771 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
17772 | if (low.kind == PROP_CONST |
17773 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
17774 | low.data.const_val |= negative_mask; | |
17775 | if (high.kind == PROP_CONST | |
17776 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
17777 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 17778 | |
5bbd8269 AB |
17779 | /* Check for bit and byte strides. */ |
17780 | struct dynamic_prop byte_stride_prop; | |
17781 | attribute *attr_byte_stride = dwarf2_attr (die, DW_AT_byte_stride, cu); | |
17782 | if (attr_byte_stride != nullptr) | |
17783 | { | |
09ba997f | 17784 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
5bbd8269 AB |
17785 | attr_to_dynamic_prop (attr_byte_stride, die, cu, &byte_stride_prop, |
17786 | prop_type); | |
17787 | } | |
17788 | ||
17789 | struct dynamic_prop bit_stride_prop; | |
17790 | attribute *attr_bit_stride = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
17791 | if (attr_bit_stride != nullptr) | |
17792 | { | |
17793 | /* It only makes sense to have either a bit or byte stride. */ | |
17794 | if (attr_byte_stride != nullptr) | |
17795 | { | |
17796 | complaint (_("Found DW_AT_bit_stride and DW_AT_byte_stride " | |
17797 | "- DIE at %s [in module %s]"), | |
17798 | sect_offset_str (die->sect_off), | |
5e22e966 | 17799 | objfile_name (cu->per_objfile->objfile)); |
5bbd8269 AB |
17800 | attr_bit_stride = nullptr; |
17801 | } | |
17802 | else | |
17803 | { | |
09ba997f | 17804 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
5bbd8269 AB |
17805 | attr_to_dynamic_prop (attr_bit_stride, die, cu, &bit_stride_prop, |
17806 | prop_type); | |
17807 | } | |
17808 | } | |
17809 | ||
17810 | if (attr_byte_stride != nullptr | |
17811 | || attr_bit_stride != nullptr) | |
17812 | { | |
17813 | bool byte_stride_p = (attr_byte_stride != nullptr); | |
17814 | struct dynamic_prop *stride | |
17815 | = byte_stride_p ? &byte_stride_prop : &bit_stride_prop; | |
17816 | ||
17817 | range_type | |
17818 | = create_range_type_with_stride (NULL, orig_base_type, &low, | |
17819 | &high, bias, stride, byte_stride_p); | |
17820 | } | |
17821 | else | |
17822 | range_type = create_range_type (NULL, orig_base_type, &low, &high, bias); | |
a02abb62 | 17823 | |
c451ebe5 SA |
17824 | if (high_bound_is_count) |
17825 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
17826 | ||
c2ff108b JK |
17827 | /* Ada expects an empty array on no boundary attributes. */ |
17828 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 17829 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 17830 | |
39cbfefa DJ |
17831 | name = dwarf2_name (die, cu); |
17832 | if (name) | |
d0e39ea2 | 17833 | range_type->set_name (name); |
6e70227d | 17834 | |
e142c38c | 17835 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
435d3d88 | 17836 | if (attr != nullptr) |
a02abb62 JB |
17837 | TYPE_LENGTH (range_type) = DW_UNSND (attr); |
17838 | ||
2b4424c3 TT |
17839 | maybe_set_alignment (cu, die, range_type); |
17840 | ||
7e314c57 JK |
17841 | set_die_type (die, range_type, cu); |
17842 | ||
17843 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17844 | set_descriptive_type (range_type, die, cu); |
17845 | ||
7e314c57 | 17846 | return range_type; |
a02abb62 | 17847 | } |
6e70227d | 17848 | |
f792889a | 17849 | static struct type * |
81a17f79 JB |
17850 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
17851 | { | |
17852 | struct type *type; | |
81a17f79 | 17853 | |
5e22e966 | 17854 | type = init_type (cu->per_objfile->objfile, TYPE_CODE_VOID, 0, NULL); |
d0e39ea2 | 17855 | type->set_name (dwarf2_name (die, cu)); |
81a17f79 | 17856 | |
74a2f8ff | 17857 | /* In Ada, an unspecified type is typically used when the description |
85102364 | 17858 | of the type is deferred to a different unit. When encountering |
74a2f8ff JB |
17859 | such a type, we treat it as a stub, and try to resolve it later on, |
17860 | when needed. */ | |
17861 | if (cu->language == language_ada) | |
17862 | TYPE_STUB (type) = 1; | |
17863 | ||
f792889a | 17864 | return set_die_type (die, type, cu); |
81a17f79 | 17865 | } |
a02abb62 | 17866 | |
639d11d3 DC |
17867 | /* Read a single die and all its descendents. Set the die's sibling |
17868 | field to NULL; set other fields in the die correctly, and set all | |
17869 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
17870 | location of the info_ptr after reading all of those dies. PARENT | |
17871 | is the parent of the die in question. */ | |
17872 | ||
17873 | static struct die_info * | |
dee91e82 | 17874 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
17875 | const gdb_byte *info_ptr, |
17876 | const gdb_byte **new_info_ptr, | |
dee91e82 | 17877 | struct die_info *parent) |
639d11d3 DC |
17878 | { |
17879 | struct die_info *die; | |
d521ce57 | 17880 | const gdb_byte *cur_ptr; |
639d11d3 | 17881 | |
3e225074 | 17882 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, 0); |
1d325ec1 DJ |
17883 | if (die == NULL) |
17884 | { | |
17885 | *new_info_ptr = cur_ptr; | |
17886 | return NULL; | |
17887 | } | |
93311388 | 17888 | store_in_ref_table (die, reader->cu); |
639d11d3 | 17889 | |
3e225074 | 17890 | if (die->has_children) |
bf6af496 | 17891 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
17892 | else |
17893 | { | |
17894 | die->child = NULL; | |
17895 | *new_info_ptr = cur_ptr; | |
17896 | } | |
17897 | ||
17898 | die->sibling = NULL; | |
17899 | die->parent = parent; | |
17900 | return die; | |
17901 | } | |
17902 | ||
17903 | /* Read a die, all of its descendents, and all of its siblings; set | |
17904 | all of the fields of all of the dies correctly. Arguments are as | |
17905 | in read_die_and_children. */ | |
17906 | ||
17907 | static struct die_info * | |
bf6af496 | 17908 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
17909 | const gdb_byte *info_ptr, |
17910 | const gdb_byte **new_info_ptr, | |
bf6af496 | 17911 | struct die_info *parent) |
639d11d3 DC |
17912 | { |
17913 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 17914 | const gdb_byte *cur_ptr; |
639d11d3 | 17915 | |
c906108c | 17916 | cur_ptr = info_ptr; |
639d11d3 DC |
17917 | first_die = last_sibling = NULL; |
17918 | ||
17919 | while (1) | |
c906108c | 17920 | { |
639d11d3 | 17921 | struct die_info *die |
dee91e82 | 17922 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 17923 | |
1d325ec1 | 17924 | if (die == NULL) |
c906108c | 17925 | { |
639d11d3 DC |
17926 | *new_info_ptr = cur_ptr; |
17927 | return first_die; | |
c906108c | 17928 | } |
1d325ec1 DJ |
17929 | |
17930 | if (!first_die) | |
17931 | first_die = die; | |
c906108c | 17932 | else |
1d325ec1 DJ |
17933 | last_sibling->sibling = die; |
17934 | ||
17935 | last_sibling = die; | |
c906108c | 17936 | } |
c906108c SS |
17937 | } |
17938 | ||
bf6af496 DE |
17939 | /* Read a die, all of its descendents, and all of its siblings; set |
17940 | all of the fields of all of the dies correctly. Arguments are as | |
17941 | in read_die_and_children. | |
17942 | This the main entry point for reading a DIE and all its children. */ | |
17943 | ||
17944 | static struct die_info * | |
17945 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
17946 | const gdb_byte *info_ptr, |
17947 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
17948 | struct die_info *parent) |
17949 | { | |
17950 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
17951 | new_info_ptr, parent); | |
17952 | ||
b4f54984 | 17953 | if (dwarf_die_debug) |
bf6af496 DE |
17954 | { |
17955 | fprintf_unfiltered (gdb_stdlog, | |
17956 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 17957 | reader->die_section->get_name (), |
bf6af496 DE |
17958 | (unsigned) (info_ptr - reader->die_section->buffer), |
17959 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 17960 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
17961 | } |
17962 | ||
17963 | return die; | |
17964 | } | |
17965 | ||
3019eac3 DE |
17966 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
17967 | attributes. | |
17968 | The caller is responsible for filling in the extra attributes | |
17969 | and updating (*DIEP)->num_attrs. | |
17970 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 17971 | except for its child, sibling, and parent fields. */ |
93311388 | 17972 | |
d521ce57 | 17973 | static const gdb_byte * |
3019eac3 | 17974 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 17975 | struct die_info **diep, const gdb_byte *info_ptr, |
3e225074 | 17976 | int num_extra_attrs) |
93311388 | 17977 | { |
b64f50a1 | 17978 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
17979 | struct abbrev_info *abbrev; |
17980 | struct die_info *die; | |
17981 | struct dwarf2_cu *cu = reader->cu; | |
17982 | bfd *abfd = reader->abfd; | |
17983 | ||
9c541725 | 17984 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
17985 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
17986 | info_ptr += bytes_read; | |
17987 | if (!abbrev_number) | |
17988 | { | |
17989 | *diep = NULL; | |
93311388 DE |
17990 | return info_ptr; |
17991 | } | |
17992 | ||
685af9cd | 17993 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 17994 | if (!abbrev) |
348e048f DE |
17995 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
17996 | abbrev_number, | |
17997 | bfd_get_filename (abfd)); | |
17998 | ||
3019eac3 | 17999 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 18000 | die->sect_off = sect_off; |
93311388 DE |
18001 | die->tag = abbrev->tag; |
18002 | die->abbrev = abbrev_number; | |
3e225074 | 18003 | die->has_children = abbrev->has_children; |
93311388 | 18004 | |
3019eac3 DE |
18005 | /* Make the result usable. |
18006 | The caller needs to update num_attrs after adding the extra | |
18007 | attributes. */ | |
93311388 DE |
18008 | die->num_attrs = abbrev->num_attrs; |
18009 | ||
18a8505e | 18010 | std::vector<int> indexes_that_need_reprocess; |
93311388 | 18011 | for (i = 0; i < abbrev->num_attrs; ++i) |
18a8505e AT |
18012 | { |
18013 | bool need_reprocess; | |
18014 | info_ptr = | |
18015 | read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], | |
18016 | info_ptr, &need_reprocess); | |
18017 | if (need_reprocess) | |
18018 | indexes_that_need_reprocess.push_back (i); | |
18019 | } | |
18020 | ||
052c8bb8 | 18021 | struct attribute *attr = die->attr (DW_AT_str_offsets_base); |
18a8505e AT |
18022 | if (attr != nullptr) |
18023 | cu->str_offsets_base = DW_UNSND (attr); | |
93311388 | 18024 | |
41144253 | 18025 | attr = die->attr (DW_AT_loclists_base); |
18026 | if (attr != nullptr) | |
18027 | cu->loclist_base = DW_UNSND (attr); | |
18028 | ||
a39fdb41 | 18029 | auto maybe_addr_base = die->addr_base (); |
18a8505e AT |
18030 | if (maybe_addr_base.has_value ()) |
18031 | cu->addr_base = *maybe_addr_base; | |
18032 | for (int index : indexes_that_need_reprocess) | |
18033 | read_attribute_reprocess (reader, &die->attrs[index]); | |
93311388 | 18034 | *diep = die; |
93311388 DE |
18035 | return info_ptr; |
18036 | } | |
18037 | ||
3019eac3 DE |
18038 | /* Read a die and all its attributes. |
18039 | Set DIEP to point to a newly allocated die with its information, | |
3e225074 | 18040 | except for its child, sibling, and parent fields. */ |
3019eac3 | 18041 | |
d521ce57 | 18042 | static const gdb_byte * |
3019eac3 | 18043 | read_full_die (const struct die_reader_specs *reader, |
3e225074 | 18044 | struct die_info **diep, const gdb_byte *info_ptr) |
3019eac3 | 18045 | { |
d521ce57 | 18046 | const gdb_byte *result; |
bf6af496 | 18047 | |
3e225074 | 18048 | result = read_full_die_1 (reader, diep, info_ptr, 0); |
bf6af496 | 18049 | |
b4f54984 | 18050 | if (dwarf_die_debug) |
bf6af496 DE |
18051 | { |
18052 | fprintf_unfiltered (gdb_stdlog, | |
18053 | "Read die from %s@0x%x of %s:\n", | |
96b79293 | 18054 | reader->die_section->get_name (), |
bf6af496 DE |
18055 | (unsigned) (info_ptr - reader->die_section->buffer), |
18056 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18057 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
18058 | } |
18059 | ||
18060 | return result; | |
3019eac3 | 18061 | } |
433df2d4 | 18062 | \f |
c906108c | 18063 | |
72bf9492 DJ |
18064 | /* Returns nonzero if TAG represents a type that we might generate a partial |
18065 | symbol for. */ | |
18066 | ||
18067 | static int | |
18068 | is_type_tag_for_partial (int tag) | |
18069 | { | |
18070 | switch (tag) | |
18071 | { | |
18072 | #if 0 | |
18073 | /* Some types that would be reasonable to generate partial symbols for, | |
18074 | that we don't at present. */ | |
18075 | case DW_TAG_array_type: | |
18076 | case DW_TAG_file_type: | |
18077 | case DW_TAG_ptr_to_member_type: | |
18078 | case DW_TAG_set_type: | |
18079 | case DW_TAG_string_type: | |
18080 | case DW_TAG_subroutine_type: | |
18081 | #endif | |
18082 | case DW_TAG_base_type: | |
18083 | case DW_TAG_class_type: | |
680b30c7 | 18084 | case DW_TAG_interface_type: |
72bf9492 DJ |
18085 | case DW_TAG_enumeration_type: |
18086 | case DW_TAG_structure_type: | |
18087 | case DW_TAG_subrange_type: | |
18088 | case DW_TAG_typedef: | |
18089 | case DW_TAG_union_type: | |
18090 | return 1; | |
18091 | default: | |
18092 | return 0; | |
18093 | } | |
18094 | } | |
18095 | ||
18096 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
18097 | ||
18098 | static struct partial_die_info * | |
dee91e82 | 18099 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 18100 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 18101 | { |
dee91e82 | 18102 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 18103 | struct objfile *objfile = cu->per_objfile->objfile; |
72bf9492 | 18104 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 18105 | unsigned int bytes_read; |
5afb4e99 | 18106 | unsigned int load_all = 0; |
72bf9492 DJ |
18107 | int nesting_level = 1; |
18108 | ||
18109 | parent_die = NULL; | |
18110 | last_die = NULL; | |
18111 | ||
7adf1e79 DE |
18112 | gdb_assert (cu->per_cu != NULL); |
18113 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
18114 | load_all = 1; |
18115 | ||
72bf9492 DJ |
18116 | cu->partial_dies |
18117 | = htab_create_alloc_ex (cu->header.length / 12, | |
18118 | partial_die_hash, | |
18119 | partial_die_eq, | |
18120 | NULL, | |
18121 | &cu->comp_unit_obstack, | |
18122 | hashtab_obstack_allocate, | |
18123 | dummy_obstack_deallocate); | |
18124 | ||
72bf9492 DJ |
18125 | while (1) |
18126 | { | |
685af9cd | 18127 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
18128 | |
18129 | /* A NULL abbrev means the end of a series of children. */ | |
18130 | if (abbrev == NULL) | |
18131 | { | |
18132 | if (--nesting_level == 0) | |
cd9983dd YQ |
18133 | return first_die; |
18134 | ||
72bf9492 DJ |
18135 | info_ptr += bytes_read; |
18136 | last_die = parent_die; | |
18137 | parent_die = parent_die->die_parent; | |
18138 | continue; | |
18139 | } | |
18140 | ||
98bfdba5 PA |
18141 | /* Check for template arguments. We never save these; if |
18142 | they're seen, we just mark the parent, and go on our way. */ | |
18143 | if (parent_die != NULL | |
18144 | && cu->language == language_cplus | |
18145 | && (abbrev->tag == DW_TAG_template_type_param | |
18146 | || abbrev->tag == DW_TAG_template_value_param)) | |
18147 | { | |
18148 | parent_die->has_template_arguments = 1; | |
18149 | ||
18150 | if (!load_all) | |
18151 | { | |
18152 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18153 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18154 | continue; |
18155 | } | |
18156 | } | |
18157 | ||
0d99eb77 | 18158 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18159 | Skip their other children. */ |
18160 | if (!load_all | |
18161 | && cu->language == language_cplus | |
18162 | && parent_die != NULL | |
18163 | && parent_die->tag == DW_TAG_subprogram) | |
18164 | { | |
dee91e82 | 18165 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18166 | continue; |
18167 | } | |
18168 | ||
5afb4e99 DJ |
18169 | /* Check whether this DIE is interesting enough to save. Normally |
18170 | we would not be interested in members here, but there may be | |
18171 | later variables referencing them via DW_AT_specification (for | |
18172 | static members). */ | |
18173 | if (!load_all | |
18174 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18175 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18176 | && abbrev->tag != DW_TAG_enumerator |
18177 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 18178 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 18179 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18180 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18181 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18182 | && abbrev->tag != DW_TAG_module |
95554aad | 18183 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18184 | && abbrev->tag != DW_TAG_imported_unit |
18185 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18186 | { |
18187 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18188 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18189 | continue; |
18190 | } | |
18191 | ||
6f06d47b YQ |
18192 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
18193 | abbrev); | |
cd9983dd | 18194 | |
48fbe735 | 18195 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
18196 | |
18197 | /* This two-pass algorithm for processing partial symbols has a | |
18198 | high cost in cache pressure. Thus, handle some simple cases | |
18199 | here which cover the majority of C partial symbols. DIEs | |
18200 | which neither have specification tags in them, nor could have | |
18201 | specification tags elsewhere pointing at them, can simply be | |
18202 | processed and discarded. | |
18203 | ||
18204 | This segment is also optional; scan_partial_symbols and | |
18205 | add_partial_symbol will handle these DIEs if we chain | |
18206 | them in normally. When compilers which do not emit large | |
18207 | quantities of duplicate debug information are more common, | |
18208 | this code can probably be removed. */ | |
18209 | ||
18210 | /* Any complete simple types at the top level (pretty much all | |
18211 | of them, for a language without namespaces), can be processed | |
18212 | directly. */ | |
18213 | if (parent_die == NULL | |
cd9983dd YQ |
18214 | && pdi.has_specification == 0 |
18215 | && pdi.is_declaration == 0 | |
18216 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
18217 | || pdi.tag == DW_TAG_base_type | |
18218 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 18219 | { |
cd9983dd | 18220 | if (building_psymtab && pdi.name != NULL) |
31edb802 | 18221 | add_psymbol_to_list (pdi.name, false, |
79748972 | 18222 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 18223 | psymbol_placement::STATIC, |
1762568f | 18224 | 0, cu->language, objfile); |
cd9983dd | 18225 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18226 | continue; |
18227 | } | |
18228 | ||
d8228535 JK |
18229 | /* The exception for DW_TAG_typedef with has_children above is |
18230 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 18231 | type_name_or_error will error on such types later. |
d8228535 JK |
18232 | |
18233 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18234 | it could not find the child DIEs referenced later, this is checked | |
18235 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18236 | ||
cd9983dd | 18237 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 18238 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 18239 | "- DIE at %s [in module %s]"), |
cd9983dd | 18240 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 18241 | |
72bf9492 DJ |
18242 | /* If we're at the second level, and we're an enumerator, and |
18243 | our parent has no specification (meaning possibly lives in a | |
18244 | namespace elsewhere), then we can add the partial symbol now | |
18245 | instead of queueing it. */ | |
cd9983dd | 18246 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
18247 | && parent_die != NULL |
18248 | && parent_die->die_parent == NULL | |
18249 | && parent_die->tag == DW_TAG_enumeration_type | |
18250 | && parent_die->has_specification == 0) | |
18251 | { | |
cd9983dd | 18252 | if (pdi.name == NULL) |
b98664d3 | 18253 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 18254 | else if (building_psymtab) |
31edb802 | 18255 | add_psymbol_to_list (pdi.name, false, |
79748972 | 18256 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 18257 | cu->language == language_cplus |
75aedd27 TT |
18258 | ? psymbol_placement::GLOBAL |
18259 | : psymbol_placement::STATIC, | |
1762568f | 18260 | 0, cu->language, objfile); |
72bf9492 | 18261 | |
cd9983dd | 18262 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18263 | continue; |
18264 | } | |
18265 | ||
cd9983dd | 18266 | struct partial_die_info *part_die |
6f06d47b | 18267 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 18268 | |
72bf9492 DJ |
18269 | /* We'll save this DIE so link it in. */ |
18270 | part_die->die_parent = parent_die; | |
18271 | part_die->die_sibling = NULL; | |
18272 | part_die->die_child = NULL; | |
18273 | ||
18274 | if (last_die && last_die == parent_die) | |
18275 | last_die->die_child = part_die; | |
18276 | else if (last_die) | |
18277 | last_die->die_sibling = part_die; | |
18278 | ||
18279 | last_die = part_die; | |
18280 | ||
18281 | if (first_die == NULL) | |
18282 | first_die = part_die; | |
18283 | ||
18284 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18285 | find interesting need to be in the hash table, because we | |
18286 | also have the parent/sibling/child chains; only those that we | |
18287 | might refer to by offset later during partial symbol reading. | |
18288 | ||
18289 | For now this means things that might have be the target of a | |
18290 | DW_AT_specification, DW_AT_abstract_origin, or | |
18291 | DW_AT_extension. DW_AT_extension will refer only to | |
18292 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18293 | many things under the function DIE, but we do not recurse | |
18294 | into function DIEs during partial symbol reading) and | |
18295 | possibly variables as well; DW_AT_specification refers to | |
18296 | declarations. Declarations ought to have the DW_AT_declaration | |
18297 | flag. It happens that GCC forgets to put it in sometimes, but | |
18298 | only for functions, not for types. | |
18299 | ||
18300 | Adding more things than necessary to the hash table is harmless | |
18301 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18302 | wasted time in find_partial_die, when we reread the compilation |
18303 | unit with load_all_dies set. */ | |
72bf9492 | 18304 | |
5afb4e99 | 18305 | if (load_all |
72929c62 | 18306 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18307 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18308 | || abbrev->tag == DW_TAG_variable |
18309 | || abbrev->tag == DW_TAG_namespace | |
18310 | || part_die->is_declaration) | |
18311 | { | |
18312 | void **slot; | |
18313 | ||
18314 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18315 | to_underlying (part_die->sect_off), |
18316 | INSERT); | |
72bf9492 DJ |
18317 | *slot = part_die; |
18318 | } | |
18319 | ||
72bf9492 | 18320 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 18321 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18322 | languages we have to, so that we can get at method physnames |
18323 | to infer fully qualified class names, for DW_AT_specification, | |
18324 | and for C++ template arguments. For C++, we also look one level | |
18325 | inside functions to find template arguments (if the name of the | |
18326 | function does not already contain the template arguments). | |
bc30ff58 | 18327 | |
0a4b0913 AB |
18328 | For Ada and Fortran, we need to scan the children of subprograms |
18329 | and lexical blocks as well because these languages allow the | |
18330 | definition of nested entities that could be interesting for the | |
18331 | debugger, such as nested subprograms for instance. */ | |
72bf9492 | 18332 | if (last_die->has_children |
5afb4e99 DJ |
18333 | && (load_all |
18334 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18335 | || last_die->tag == DW_TAG_module |
72bf9492 | 18336 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18337 | || (cu->language == language_cplus |
18338 | && last_die->tag == DW_TAG_subprogram | |
18339 | && (last_die->name == NULL | |
18340 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
18341 | || (cu->language != language_c |
18342 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18343 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18344 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 | 18345 | || last_die->tag == DW_TAG_union_type)) |
0a4b0913 AB |
18346 | || ((cu->language == language_ada |
18347 | || cu->language == language_fortran) | |
bc30ff58 JB |
18348 | && (last_die->tag == DW_TAG_subprogram |
18349 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18350 | { |
18351 | nesting_level++; | |
18352 | parent_die = last_die; | |
18353 | continue; | |
18354 | } | |
18355 | ||
18356 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18357 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18358 | |
18359 | /* Back to the top, do it again. */ | |
18360 | } | |
18361 | } | |
18362 | ||
6f06d47b YQ |
18363 | partial_die_info::partial_die_info (sect_offset sect_off_, |
18364 | struct abbrev_info *abbrev) | |
18365 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
18366 | { | |
18367 | } | |
18368 | ||
35cc7ed7 YQ |
18369 | /* Read a minimal amount of information into the minimal die structure. |
18370 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 18371 | |
48fbe735 YQ |
18372 | const gdb_byte * |
18373 | partial_die_info::read (const struct die_reader_specs *reader, | |
18374 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 18375 | { |
dee91e82 | 18376 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 18377 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
fa238c03 | 18378 | unsigned int i; |
c5aa993b | 18379 | int has_low_pc_attr = 0; |
c906108c | 18380 | int has_high_pc_attr = 0; |
91da1414 | 18381 | int high_pc_relative = 0; |
c906108c | 18382 | |
fd0a254f | 18383 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 18384 | { |
e7da7f8f | 18385 | attribute attr; |
18a8505e | 18386 | bool need_reprocess; |
e7da7f8f | 18387 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], |
18a8505e AT |
18388 | info_ptr, &need_reprocess); |
18389 | /* String and address offsets that need to do the reprocessing have | |
18390 | already been read at this point, so there is no need to wait until | |
18391 | the loop terminates to do the reprocessing. */ | |
18392 | if (need_reprocess) | |
e7da7f8f | 18393 | read_attribute_reprocess (reader, &attr); |
c906108c | 18394 | /* Store the data if it is of an attribute we want to keep in a |
c5aa993b | 18395 | partial symbol table. */ |
c906108c SS |
18396 | switch (attr.name) |
18397 | { | |
18398 | case DW_AT_name: | |
48fbe735 | 18399 | switch (tag) |
71c25dea TT |
18400 | { |
18401 | case DW_TAG_compile_unit: | |
95554aad | 18402 | case DW_TAG_partial_unit: |
348e048f | 18403 | case DW_TAG_type_unit: |
71c25dea TT |
18404 | /* Compilation units have a DW_AT_name that is a filename, not |
18405 | a source language identifier. */ | |
18406 | case DW_TAG_enumeration_type: | |
18407 | case DW_TAG_enumerator: | |
18408 | /* These tags always have simple identifiers already; no need | |
18409 | to canonicalize them. */ | |
48fbe735 | 18410 | name = DW_STRING (&attr); |
71c25dea TT |
18411 | break; |
18412 | default: | |
48fbe735 YQ |
18413 | { |
18414 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18415 | ||
18416 | name | |
be1e3d3e | 18417 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, objfile); |
48fbe735 | 18418 | } |
71c25dea TT |
18419 | break; |
18420 | } | |
c906108c | 18421 | break; |
31ef98ae | 18422 | case DW_AT_linkage_name: |
c906108c | 18423 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
18424 | /* Note that both forms of linkage name might appear. We |
18425 | assume they will be the same, and we only store the last | |
18426 | one we see. */ | |
e61108c9 | 18427 | linkage_name = attr.value_as_string (); |
787de330 TT |
18428 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
18429 | See https://github.com/rust-lang/rust/issues/32925. */ | |
18430 | if (cu->language == language_rust && linkage_name != NULL | |
18431 | && strchr (linkage_name, '{') != NULL) | |
18432 | linkage_name = NULL; | |
c906108c SS |
18433 | break; |
18434 | case DW_AT_low_pc: | |
18435 | has_low_pc_attr = 1; | |
cd6c91b4 | 18436 | lowpc = attr.value_as_address (); |
c906108c SS |
18437 | break; |
18438 | case DW_AT_high_pc: | |
18439 | has_high_pc_attr = 1; | |
cd6c91b4 TT |
18440 | highpc = attr.value_as_address (); |
18441 | if (cu->header.version >= 4 && attr.form_is_constant ()) | |
31aa7e4e | 18442 | high_pc_relative = 1; |
c906108c SS |
18443 | break; |
18444 | case DW_AT_location: | |
0963b4bd | 18445 | /* Support the .debug_loc offsets. */ |
4fc6c0d5 | 18446 | if (attr.form_is_block ()) |
8e19ed76 | 18447 | { |
48fbe735 | 18448 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 18449 | } |
cd6c91b4 | 18450 | else if (attr.form_is_section_offset ()) |
8e19ed76 | 18451 | { |
4d3c2250 | 18452 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
18453 | } |
18454 | else | |
18455 | { | |
4d3c2250 KB |
18456 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
18457 | "partial symbol information"); | |
8e19ed76 | 18458 | } |
c906108c | 18459 | break; |
c906108c | 18460 | case DW_AT_external: |
48fbe735 | 18461 | is_external = DW_UNSND (&attr); |
c906108c SS |
18462 | break; |
18463 | case DW_AT_declaration: | |
48fbe735 | 18464 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
18465 | break; |
18466 | case DW_AT_type: | |
48fbe735 | 18467 | has_type = 1; |
c906108c SS |
18468 | break; |
18469 | case DW_AT_abstract_origin: | |
18470 | case DW_AT_specification: | |
72bf9492 | 18471 | case DW_AT_extension: |
48fbe735 | 18472 | has_specification = 1; |
0826b30a | 18473 | spec_offset = attr.get_ref_die_offset (); |
48fbe735 | 18474 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 | 18475 | || cu->per_cu->is_dwz); |
c906108c SS |
18476 | break; |
18477 | case DW_AT_sibling: | |
18478 | /* Ignore absolute siblings, they might point outside of | |
18479 | the current compile unit. */ | |
18480 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 18481 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 18482 | else |
b9502d3f | 18483 | { |
48fbe735 | 18484 | const gdb_byte *buffer = reader->buffer; |
0826b30a | 18485 | sect_offset off = attr.get_ref_die_offset (); |
9c541725 | 18486 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); |
b9502d3f WN |
18487 | |
18488 | if (sibling_ptr < info_ptr) | |
b98664d3 | 18489 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 | 18490 | else if (sibling_ptr > reader->buffer_end) |
a0194fa8 | 18491 | reader->die_section->overflow_complaint (); |
b9502d3f | 18492 | else |
48fbe735 | 18493 | sibling = sibling_ptr; |
b9502d3f | 18494 | } |
c906108c | 18495 | break; |
fa4028e9 | 18496 | case DW_AT_byte_size: |
48fbe735 | 18497 | has_byte_size = 1; |
fa4028e9 | 18498 | break; |
ff908ebf | 18499 | case DW_AT_const_value: |
48fbe735 | 18500 | has_const_value = 1; |
ff908ebf | 18501 | break; |
68511cec CES |
18502 | case DW_AT_calling_convention: |
18503 | /* DWARF doesn't provide a way to identify a program's source-level | |
18504 | entry point. DW_AT_calling_convention attributes are only meant | |
18505 | to describe functions' calling conventions. | |
18506 | ||
18507 | However, because it's a necessary piece of information in | |
0c1b455e TT |
18508 | Fortran, and before DWARF 4 DW_CC_program was the only |
18509 | piece of debugging information whose definition refers to | |
18510 | a 'main program' at all, several compilers marked Fortran | |
18511 | main programs with DW_CC_program --- even when those | |
18512 | functions use the standard calling conventions. | |
18513 | ||
18514 | Although DWARF now specifies a way to provide this | |
18515 | information, we support this practice for backward | |
18516 | compatibility. */ | |
68511cec | 18517 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 18518 | && cu->language == language_fortran) |
48fbe735 | 18519 | main_subprogram = 1; |
68511cec | 18520 | break; |
481860b3 GB |
18521 | case DW_AT_inline: |
18522 | if (DW_UNSND (&attr) == DW_INL_inlined | |
18523 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 18524 | may_be_inlined = 1; |
481860b3 | 18525 | break; |
95554aad TT |
18526 | |
18527 | case DW_AT_import: | |
48fbe735 | 18528 | if (tag == DW_TAG_imported_unit) |
36586728 | 18529 | { |
0826b30a | 18530 | d.sect_off = attr.get_ref_die_offset (); |
48fbe735 | 18531 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
36586728 TT |
18532 | || cu->per_cu->is_dwz); |
18533 | } | |
95554aad TT |
18534 | break; |
18535 | ||
0c1b455e | 18536 | case DW_AT_main_subprogram: |
48fbe735 | 18537 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
18538 | break; |
18539 | ||
05caa1d2 TT |
18540 | case DW_AT_ranges: |
18541 | { | |
18542 | /* It would be nice to reuse dwarf2_get_pc_bounds here, | |
18543 | but that requires a full DIE, so instead we just | |
18544 | reimplement it. */ | |
18545 | int need_ranges_base = tag != DW_TAG_compile_unit; | |
18546 | unsigned int ranges_offset = (DW_UNSND (&attr) | |
18547 | + (need_ranges_base | |
18548 | ? cu->ranges_base | |
18549 | : 0)); | |
18550 | ||
18551 | /* Value of the DW_AT_ranges attribute is the offset in the | |
18552 | .debug_ranges section. */ | |
18553 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, | |
18554 | nullptr)) | |
18555 | has_pc_info = 1; | |
18556 | } | |
18557 | break; | |
18558 | ||
c906108c SS |
18559 | default: |
18560 | break; | |
18561 | } | |
18562 | } | |
18563 | ||
10d06d82 TT |
18564 | /* For Ada, if both the name and the linkage name appear, we prefer |
18565 | the latter. This lets "catch exception" work better, regardless | |
18566 | of the order in which the name and linkage name were emitted. | |
18567 | Really, though, this is just a workaround for the fact that gdb | |
18568 | doesn't store both the name and the linkage name. */ | |
18569 | if (cu->language == language_ada && linkage_name != nullptr) | |
18570 | name = linkage_name; | |
18571 | ||
91da1414 | 18572 | if (high_pc_relative) |
48fbe735 | 18573 | highpc += lowpc; |
91da1414 | 18574 | |
9373cf26 JK |
18575 | if (has_low_pc_attr && has_high_pc_attr) |
18576 | { | |
18577 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
18578 | eliminate duplicate copies of functions and vtables and such. | |
18579 | The linker will arbitrarily choose one and discard the others. | |
18580 | The AT_*_pc values for such functions refer to local labels in | |
18581 | these sections. If the section from that file was discarded, the | |
18582 | labels are not in the output, so the relocs get a value of 0. | |
18583 | If this is a discarded function, mark the pc bounds as invalid, | |
18584 | so that GDB will ignore it. */ | |
5989a64e | 18585 | if (lowpc == 0 && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
9373cf26 | 18586 | { |
48fbe735 | 18587 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 18588 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 18589 | |
b98664d3 | 18590 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 18591 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18592 | paddress (gdbarch, lowpc), |
18593 | sect_offset_str (sect_off), | |
9d8780f0 | 18594 | objfile_name (objfile)); |
9373cf26 JK |
18595 | } |
18596 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 18597 | else if (lowpc >= highpc) |
9373cf26 | 18598 | { |
48fbe735 | 18599 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 18600 | struct gdbarch *gdbarch = objfile->arch (); |
9373cf26 | 18601 | |
b98664d3 | 18602 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 18603 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18604 | paddress (gdbarch, lowpc), |
18605 | paddress (gdbarch, highpc), | |
18606 | sect_offset_str (sect_off), | |
9c541725 | 18607 | objfile_name (objfile)); |
9373cf26 JK |
18608 | } |
18609 | else | |
48fbe735 | 18610 | has_pc_info = 1; |
9373cf26 | 18611 | } |
85cbf3d3 | 18612 | |
c906108c SS |
18613 | return info_ptr; |
18614 | } | |
18615 | ||
72bf9492 DJ |
18616 | /* Find a cached partial DIE at OFFSET in CU. */ |
18617 | ||
d590ff25 YQ |
18618 | struct partial_die_info * |
18619 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
18620 | { |
18621 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 18622 | struct partial_die_info part_die (sect_off); |
72bf9492 | 18623 | |
9a3c8263 | 18624 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 18625 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 18626 | to_underlying (sect_off))); |
72bf9492 | 18627 | |
72bf9492 DJ |
18628 | return lookup_die; |
18629 | } | |
18630 | ||
348e048f DE |
18631 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
18632 | except in the case of .debug_types DIEs which do not reference | |
18633 | outside their CU (they do however referencing other types via | |
55f1336d | 18634 | DW_FORM_ref_sig8). */ |
72bf9492 | 18635 | |
122cf0f2 | 18636 | static const struct cu_partial_die_info |
9c541725 | 18637 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 18638 | { |
5e22e966 | 18639 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 18640 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5afb4e99 DJ |
18641 | struct dwarf2_per_cu_data *per_cu = NULL; |
18642 | struct partial_die_info *pd = NULL; | |
72bf9492 | 18643 | |
36586728 | 18644 | if (offset_in_dwz == cu->per_cu->is_dwz |
4057dfde | 18645 | && cu->header.offset_in_cu_p (sect_off)) |
5afb4e99 | 18646 | { |
d590ff25 | 18647 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 18648 | if (pd != NULL) |
fb816e8b | 18649 | return { cu, pd }; |
0d99eb77 DE |
18650 | /* We missed recording what we needed. |
18651 | Load all dies and try again. */ | |
18652 | per_cu = cu->per_cu; | |
5afb4e99 | 18653 | } |
0d99eb77 DE |
18654 | else |
18655 | { | |
18656 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 18657 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 18658 | { |
9d8780f0 SM |
18659 | error (_("Dwarf Error: Type Unit at offset %s contains" |
18660 | " external reference to offset %s [in module %s].\n"), | |
18661 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
18662 | bfd_get_filename (objfile->obfd)); |
18663 | } | |
9c541725 | 18664 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 18665 | dwarf2_per_objfile); |
72bf9492 | 18666 | |
0d99eb77 DE |
18667 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
18668 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 18669 | |
0d99eb77 | 18670 | per_cu->cu->last_used = 0; |
d590ff25 | 18671 | pd = per_cu->cu->find_partial_die (sect_off); |
0d99eb77 | 18672 | } |
5afb4e99 | 18673 | |
dee91e82 DE |
18674 | /* If we didn't find it, and not all dies have been loaded, |
18675 | load them all and try again. */ | |
18676 | ||
5afb4e99 DJ |
18677 | if (pd == NULL && per_cu->load_all_dies == 0) |
18678 | { | |
5afb4e99 | 18679 | per_cu->load_all_dies = 1; |
fd820528 DE |
18680 | |
18681 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
18682 | THIS_CU->cu may already be in use. So we can't just free it and | |
18683 | replace its DIEs with the ones we read in. Instead, we leave those | |
18684 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
18685 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
18686 | set. */ | |
dee91e82 | 18687 | load_partial_comp_unit (per_cu); |
5afb4e99 | 18688 | |
d590ff25 | 18689 | pd = per_cu->cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18690 | } |
18691 | ||
18692 | if (pd == NULL) | |
18693 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 18694 | _("could not find partial DIE %s " |
3e43a32a | 18695 | "in cache [from module %s]\n"), |
9d8780f0 | 18696 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
fb816e8b | 18697 | return { per_cu->cu, pd }; |
72bf9492 DJ |
18698 | } |
18699 | ||
abc72ce4 DE |
18700 | /* See if we can figure out if the class lives in a namespace. We do |
18701 | this by looking for a member function; its demangled name will | |
18702 | contain namespace info, if there is any. */ | |
18703 | ||
18704 | static void | |
18705 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
18706 | struct dwarf2_cu *cu) | |
18707 | { | |
18708 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
18709 | what template types look like, because the demangler | |
18710 | frequently doesn't give the same name as the debug info. We | |
18711 | could fix this by only using the demangled name to get the | |
18712 | prefix (but see comment in read_structure_type). */ | |
18713 | ||
18714 | struct partial_die_info *real_pdi; | |
18715 | struct partial_die_info *child_pdi; | |
18716 | ||
18717 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
18718 | we should not do this. We'll prepend the parent's fully qualified | |
18719 | name when we create the partial symbol. */ | |
18720 | ||
18721 | real_pdi = struct_pdi; | |
18722 | while (real_pdi->has_specification) | |
fb816e8b | 18723 | { |
122cf0f2 AB |
18724 | auto res = find_partial_die (real_pdi->spec_offset, |
18725 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
18726 | real_pdi = res.pdi; |
18727 | cu = res.cu; | |
18728 | } | |
abc72ce4 DE |
18729 | |
18730 | if (real_pdi->die_parent != NULL) | |
18731 | return; | |
18732 | ||
18733 | for (child_pdi = struct_pdi->die_child; | |
18734 | child_pdi != NULL; | |
18735 | child_pdi = child_pdi->die_sibling) | |
18736 | { | |
18737 | if (child_pdi->tag == DW_TAG_subprogram | |
18738 | && child_pdi->linkage_name != NULL) | |
18739 | { | |
43816ebc TT |
18740 | gdb::unique_xmalloc_ptr<char> actual_class_name |
18741 | (language_class_name_from_physname (cu->language_defn, | |
18742 | child_pdi->linkage_name)); | |
abc72ce4 DE |
18743 | if (actual_class_name != NULL) |
18744 | { | |
5e22e966 | 18745 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 18746 | struct_pdi->name = objfile->intern (actual_class_name.get ()); |
abc72ce4 DE |
18747 | } |
18748 | break; | |
18749 | } | |
18750 | } | |
18751 | } | |
18752 | ||
25c11aca TV |
18753 | /* Return true if a DIE with TAG may have the DW_AT_const_value |
18754 | attribute. */ | |
18755 | ||
18756 | static bool | |
18757 | can_have_DW_AT_const_value_p (enum dwarf_tag tag) | |
18758 | { | |
18759 | switch (tag) | |
18760 | { | |
18761 | case DW_TAG_constant: | |
18762 | case DW_TAG_enumerator: | |
18763 | case DW_TAG_formal_parameter: | |
18764 | case DW_TAG_template_value_param: | |
18765 | case DW_TAG_variable: | |
18766 | return true; | |
18767 | } | |
18768 | ||
18769 | return false; | |
18770 | } | |
18771 | ||
52356b79 YQ |
18772 | void |
18773 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 18774 | { |
abc72ce4 DE |
18775 | /* Once we've fixed up a die, there's no point in doing so again. |
18776 | This also avoids a memory leak if we were to call | |
18777 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 18778 | if (fixup_called) |
abc72ce4 DE |
18779 | return; |
18780 | ||
72bf9492 DJ |
18781 | /* If we found a reference attribute and the DIE has no name, try |
18782 | to find a name in the referred to DIE. */ | |
18783 | ||
52356b79 | 18784 | if (name == NULL && has_specification) |
72bf9492 DJ |
18785 | { |
18786 | struct partial_die_info *spec_die; | |
72bf9492 | 18787 | |
122cf0f2 | 18788 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
18789 | spec_die = res.pdi; |
18790 | cu = res.cu; | |
72bf9492 | 18791 | |
52356b79 | 18792 | spec_die->fixup (cu); |
72bf9492 DJ |
18793 | |
18794 | if (spec_die->name) | |
18795 | { | |
52356b79 | 18796 | name = spec_die->name; |
72bf9492 DJ |
18797 | |
18798 | /* Copy DW_AT_external attribute if it is set. */ | |
18799 | if (spec_die->is_external) | |
52356b79 | 18800 | is_external = spec_die->is_external; |
72bf9492 DJ |
18801 | } |
18802 | } | |
18803 | ||
25c11aca TV |
18804 | if (!has_const_value && has_specification |
18805 | && can_have_DW_AT_const_value_p (tag)) | |
18806 | { | |
18807 | struct partial_die_info *spec_die; | |
18808 | ||
18809 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); | |
18810 | spec_die = res.pdi; | |
18811 | cu = res.cu; | |
18812 | ||
18813 | spec_die->fixup (cu); | |
18814 | ||
18815 | if (spec_die->has_const_value) | |
18816 | { | |
18817 | /* Copy DW_AT_const_value attribute if it is set. */ | |
18818 | has_const_value = spec_die->has_const_value; | |
18819 | } | |
18820 | } | |
18821 | ||
72bf9492 | 18822 | /* Set default names for some unnamed DIEs. */ |
72bf9492 | 18823 | |
52356b79 YQ |
18824 | if (name == NULL && tag == DW_TAG_namespace) |
18825 | name = CP_ANONYMOUS_NAMESPACE_STR; | |
72bf9492 | 18826 | |
abc72ce4 DE |
18827 | /* If there is no parent die to provide a namespace, and there are |
18828 | children, see if we can determine the namespace from their linkage | |
122d1940 | 18829 | name. */ |
abc72ce4 | 18830 | if (cu->language == language_cplus |
5e22e966 | 18831 | && !cu->per_objfile->per_bfd->types.empty () |
52356b79 YQ |
18832 | && die_parent == NULL |
18833 | && has_children | |
18834 | && (tag == DW_TAG_class_type | |
18835 | || tag == DW_TAG_structure_type | |
18836 | || tag == DW_TAG_union_type)) | |
18837 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 18838 | |
53832f31 TT |
18839 | /* GCC might emit a nameless struct or union that has a linkage |
18840 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
52356b79 YQ |
18841 | if (name == NULL |
18842 | && (tag == DW_TAG_class_type | |
18843 | || tag == DW_TAG_interface_type | |
18844 | || tag == DW_TAG_structure_type | |
18845 | || tag == DW_TAG_union_type) | |
18846 | && linkage_name != NULL) | |
53832f31 | 18847 | { |
43816ebc TT |
18848 | gdb::unique_xmalloc_ptr<char> demangled |
18849 | (gdb_demangle (linkage_name, DMGL_TYPES)); | |
18850 | if (demangled != nullptr) | |
53832f31 | 18851 | { |
96408a79 SA |
18852 | const char *base; |
18853 | ||
18854 | /* Strip any leading namespaces/classes, keep only the base name. | |
18855 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
43816ebc TT |
18856 | base = strrchr (demangled.get (), ':'); |
18857 | if (base && base > demangled.get () && base[-1] == ':') | |
96408a79 SA |
18858 | base++; |
18859 | else | |
43816ebc | 18860 | base = demangled.get (); |
96408a79 | 18861 | |
5e22e966 | 18862 | struct objfile *objfile = cu->per_objfile->objfile; |
be1e3d3e | 18863 | name = objfile->intern (base); |
53832f31 TT |
18864 | } |
18865 | } | |
18866 | ||
52356b79 | 18867 | fixup_called = 1; |
72bf9492 DJ |
18868 | } |
18869 | ||
41144253 | 18870 | /* Read the .debug_loclists header contents from the given SECTION in the |
18871 | HEADER. */ | |
18872 | static void | |
18873 | read_loclist_header (struct loclist_header *header, | |
18874 | struct dwarf2_section_info *section) | |
18875 | { | |
18876 | unsigned int bytes_read; | |
18877 | bfd *abfd = section->get_bfd_owner (); | |
18878 | const gdb_byte *info_ptr = section->buffer; | |
18879 | header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
18880 | info_ptr += bytes_read; | |
18881 | header->version = read_2_bytes (abfd, info_ptr); | |
18882 | info_ptr += 2; | |
18883 | header->addr_size = read_1_byte (abfd, info_ptr); | |
18884 | info_ptr += 1; | |
18885 | header->segment_collector_size = read_1_byte (abfd, info_ptr); | |
18886 | info_ptr += 1; | |
18887 | header->offset_entry_count = read_4_bytes (abfd, info_ptr); | |
18888 | } | |
18889 | ||
18890 | /* Return the DW_AT_loclists_base value for the CU. */ | |
18891 | static ULONGEST | |
18892 | lookup_loclist_base (struct dwarf2_cu *cu) | |
18893 | { | |
18894 | /* For the .dwo unit, the loclist_base points to the first offset following | |
18895 | the header. The header consists of the following entities- | |
18896 | 1. Unit Length (4 bytes for 32 bit DWARF format, and 12 bytes for the 64 | |
18897 | bit format) | |
18898 | 2. version (2 bytes) | |
18899 | 3. address size (1 byte) | |
18900 | 4. segment selector size (1 byte) | |
18901 | 5. offset entry count (4 bytes) | |
18902 | These sizes are derived as per the DWARFv5 standard. */ | |
18903 | if (cu->dwo_unit != nullptr) | |
18904 | { | |
18905 | if (cu->header.initial_length_size == 4) | |
18906 | return LOCLIST_HEADER_SIZE32; | |
18907 | return LOCLIST_HEADER_SIZE64; | |
18908 | } | |
18909 | return cu->loclist_base; | |
18910 | } | |
18911 | ||
18912 | /* Given a DW_FORM_loclistx value LOCLIST_INDEX, fetch the offset from the | |
18913 | array of offsets in the .debug_loclists section. */ | |
18914 | static CORE_ADDR | |
18915 | read_loclist_index (struct dwarf2_cu *cu, ULONGEST loclist_index) | |
18916 | { | |
5e22e966 | 18917 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
41144253 | 18918 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
18919 | bfd *abfd = objfile->obfd; | |
18920 | ULONGEST loclist_base = lookup_loclist_base (cu); | |
18921 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); | |
18922 | ||
18923 | section->read (objfile); | |
18924 | if (section->buffer == NULL) | |
18925 | complaint (_("DW_FORM_loclistx used without .debug_loclists " | |
18926 | "section [in module %s]"), objfile_name (objfile)); | |
18927 | struct loclist_header header; | |
18928 | read_loclist_header (&header, section); | |
18929 | if (loclist_index >= header.offset_entry_count) | |
18930 | complaint (_("DW_FORM_loclistx pointing outside of " | |
18931 | ".debug_loclists offset array [in module %s]"), | |
18932 | objfile_name (objfile)); | |
18933 | if (loclist_base + loclist_index * cu->header.offset_size | |
18934 | >= section->size) | |
18935 | complaint (_("DW_FORM_loclistx pointing outside of " | |
18936 | ".debug_loclists section [in module %s]"), | |
18937 | objfile_name (objfile)); | |
18938 | const gdb_byte *info_ptr | |
18939 | = section->buffer + loclist_base + loclist_index * cu->header.offset_size; | |
18940 | ||
18941 | if (cu->header.offset_size == 4) | |
18942 | return bfd_get_32 (abfd, info_ptr) + loclist_base; | |
18943 | else | |
18944 | return bfd_get_64 (abfd, info_ptr) + loclist_base; | |
18945 | } | |
18946 | ||
18a8505e AT |
18947 | /* Process the attributes that had to be skipped in the first round. These |
18948 | attributes are the ones that need str_offsets_base or addr_base attributes. | |
18949 | They could not have been processed in the first round, because at the time | |
18950 | the values of str_offsets_base or addr_base may not have been known. */ | |
f1749218 TT |
18951 | static void |
18952 | read_attribute_reprocess (const struct die_reader_specs *reader, | |
18953 | struct attribute *attr) | |
18a8505e AT |
18954 | { |
18955 | struct dwarf2_cu *cu = reader->cu; | |
18956 | switch (attr->form) | |
18957 | { | |
18958 | case DW_FORM_addrx: | |
18959 | case DW_FORM_GNU_addr_index: | |
18960 | DW_ADDR (attr) = read_addr_index (cu, DW_UNSND (attr)); | |
18961 | break; | |
41144253 | 18962 | case DW_FORM_loclistx: |
18963 | DW_UNSND (attr) = read_loclist_index (cu, DW_UNSND (attr)); | |
18964 | break; | |
18a8505e AT |
18965 | case DW_FORM_strx: |
18966 | case DW_FORM_strx1: | |
18967 | case DW_FORM_strx2: | |
18968 | case DW_FORM_strx3: | |
18969 | case DW_FORM_strx4: | |
18970 | case DW_FORM_GNU_str_index: | |
18971 | { | |
18972 | unsigned int str_index = DW_UNSND (attr); | |
18973 | if (reader->dwo_file != NULL) | |
18974 | { | |
18975 | DW_STRING (attr) = read_dwo_str_index (reader, str_index); | |
18976 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18977 | } | |
18978 | else | |
18979 | { | |
18980 | DW_STRING (attr) = read_stub_str_index (cu, str_index); | |
18981 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18982 | } | |
18983 | break; | |
18984 | } | |
18985 | default: | |
18986 | gdb_assert_not_reached (_("Unexpected DWARF form.")); | |
18987 | } | |
18988 | } | |
18989 | ||
a8329558 | 18990 | /* Read an attribute value described by an attribute form. */ |
c906108c | 18991 | |
d521ce57 | 18992 | static const gdb_byte * |
dee91e82 DE |
18993 | read_attribute_value (const struct die_reader_specs *reader, |
18994 | struct attribute *attr, unsigned form, | |
18a8505e AT |
18995 | LONGEST implicit_const, const gdb_byte *info_ptr, |
18996 | bool *need_reprocess) | |
c906108c | 18997 | { |
dee91e82 | 18998 | struct dwarf2_cu *cu = reader->cu; |
5e22e966 | 18999 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 19000 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
dee91e82 | 19001 | bfd *abfd = reader->abfd; |
e7c27a73 | 19002 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19003 | unsigned int bytes_read; |
19004 | struct dwarf_block *blk; | |
18a8505e | 19005 | *need_reprocess = false; |
c906108c | 19006 | |
aead7601 | 19007 | attr->form = (enum dwarf_form) form; |
a8329558 | 19008 | switch (form) |
c906108c | 19009 | { |
c906108c | 19010 | case DW_FORM_ref_addr: |
ae411497 | 19011 | if (cu->header.version == 2) |
c8a7a66f TT |
19012 | DW_UNSND (attr) = cu->header.read_address (abfd, info_ptr, |
19013 | &bytes_read); | |
ae411497 | 19014 | else |
8266302d TT |
19015 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, |
19016 | &bytes_read); | |
ae411497 TT |
19017 | info_ptr += bytes_read; |
19018 | break; | |
36586728 | 19019 | case DW_FORM_GNU_ref_alt: |
8266302d | 19020 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
36586728 TT |
19021 | info_ptr += bytes_read; |
19022 | break; | |
ae411497 | 19023 | case DW_FORM_addr: |
08feed99 TT |
19024 | { |
19025 | struct gdbarch *gdbarch = objfile->arch (); | |
19026 | DW_ADDR (attr) = cu->header.read_address (abfd, info_ptr, &bytes_read); | |
19027 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); | |
19028 | info_ptr += bytes_read; | |
19029 | } | |
c906108c SS |
19030 | break; |
19031 | case DW_FORM_block2: | |
7b5a2f43 | 19032 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19033 | blk->size = read_2_bytes (abfd, info_ptr); |
19034 | info_ptr += 2; | |
19035 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19036 | info_ptr += blk->size; | |
19037 | DW_BLOCK (attr) = blk; | |
19038 | break; | |
19039 | case DW_FORM_block4: | |
7b5a2f43 | 19040 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19041 | blk->size = read_4_bytes (abfd, info_ptr); |
19042 | info_ptr += 4; | |
19043 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19044 | info_ptr += blk->size; | |
19045 | DW_BLOCK (attr) = blk; | |
19046 | break; | |
19047 | case DW_FORM_data2: | |
19048 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
19049 | info_ptr += 2; | |
19050 | break; | |
19051 | case DW_FORM_data4: | |
19052 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
19053 | info_ptr += 4; | |
19054 | break; | |
19055 | case DW_FORM_data8: | |
19056 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
19057 | info_ptr += 8; | |
19058 | break; | |
0224619f JK |
19059 | case DW_FORM_data16: |
19060 | blk = dwarf_alloc_block (cu); | |
19061 | blk->size = 16; | |
19062 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
19063 | info_ptr += 16; | |
19064 | DW_BLOCK (attr) = blk; | |
19065 | break; | |
2dc7f7b3 | 19066 | case DW_FORM_sec_offset: |
8266302d | 19067 | DW_UNSND (attr) = cu->header.read_offset (abfd, info_ptr, &bytes_read); |
2dc7f7b3 TT |
19068 | info_ptr += bytes_read; |
19069 | break; | |
41144253 | 19070 | case DW_FORM_loclistx: |
19071 | { | |
19072 | *need_reprocess = true; | |
19073 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19074 | info_ptr += bytes_read; | |
19075 | } | |
19076 | break; | |
c906108c | 19077 | case DW_FORM_string: |
9b1c24c8 | 19078 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 19079 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
19080 | info_ptr += bytes_read; |
19081 | break; | |
4bdf3d34 | 19082 | case DW_FORM_strp: |
36586728 TT |
19083 | if (!cu->per_cu->is_dwz) |
19084 | { | |
ed2dc618 SM |
19085 | DW_STRING (attr) = read_indirect_string (dwarf2_per_objfile, |
19086 | abfd, info_ptr, cu_header, | |
36586728 TT |
19087 | &bytes_read); |
19088 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19089 | info_ptr += bytes_read; | |
19090 | break; | |
19091 | } | |
19092 | /* FALLTHROUGH */ | |
43988095 JK |
19093 | case DW_FORM_line_strp: |
19094 | if (!cu->per_cu->is_dwz) | |
19095 | { | |
86c0bb4c TT |
19096 | DW_STRING (attr) |
19097 | = dwarf2_per_objfile->read_line_string (info_ptr, cu_header, | |
19098 | &bytes_read); | |
43988095 JK |
19099 | DW_STRING_IS_CANONICAL (attr) = 0; |
19100 | info_ptr += bytes_read; | |
19101 | break; | |
19102 | } | |
19103 | /* FALLTHROUGH */ | |
36586728 TT |
19104 | case DW_FORM_GNU_strp_alt: |
19105 | { | |
c3699833 | 19106 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile->per_bfd); |
8266302d TT |
19107 | LONGEST str_offset = cu_header->read_offset (abfd, info_ptr, |
19108 | &bytes_read); | |
36586728 | 19109 | |
0314b390 | 19110 | DW_STRING (attr) = dwz->read_string (objfile, str_offset); |
36586728 TT |
19111 | DW_STRING_IS_CANONICAL (attr) = 0; |
19112 | info_ptr += bytes_read; | |
19113 | } | |
4bdf3d34 | 19114 | break; |
2dc7f7b3 | 19115 | case DW_FORM_exprloc: |
c906108c | 19116 | case DW_FORM_block: |
7b5a2f43 | 19117 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19118 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19119 | info_ptr += bytes_read; | |
19120 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19121 | info_ptr += blk->size; | |
19122 | DW_BLOCK (attr) = blk; | |
19123 | break; | |
19124 | case DW_FORM_block1: | |
7b5a2f43 | 19125 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19126 | blk->size = read_1_byte (abfd, info_ptr); |
19127 | info_ptr += 1; | |
19128 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19129 | info_ptr += blk->size; | |
19130 | DW_BLOCK (attr) = blk; | |
19131 | break; | |
19132 | case DW_FORM_data1: | |
19133 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19134 | info_ptr += 1; | |
19135 | break; | |
19136 | case DW_FORM_flag: | |
19137 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19138 | info_ptr += 1; | |
19139 | break; | |
2dc7f7b3 TT |
19140 | case DW_FORM_flag_present: |
19141 | DW_UNSND (attr) = 1; | |
19142 | break; | |
c906108c SS |
19143 | case DW_FORM_sdata: |
19144 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19145 | info_ptr += bytes_read; | |
19146 | break; | |
19147 | case DW_FORM_udata: | |
18a8505e | 19148 | case DW_FORM_rnglistx: |
c906108c SS |
19149 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19150 | info_ptr += bytes_read; | |
19151 | break; | |
19152 | case DW_FORM_ref1: | |
9c541725 | 19153 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19154 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
19155 | info_ptr += 1; |
19156 | break; | |
19157 | case DW_FORM_ref2: | |
9c541725 | 19158 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19159 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
19160 | info_ptr += 2; |
19161 | break; | |
19162 | case DW_FORM_ref4: | |
9c541725 | 19163 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19164 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
19165 | info_ptr += 4; |
19166 | break; | |
613e1657 | 19167 | case DW_FORM_ref8: |
9c541725 | 19168 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19169 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
19170 | info_ptr += 8; |
19171 | break; | |
55f1336d | 19172 | case DW_FORM_ref_sig8: |
ac9ec31b | 19173 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
19174 | info_ptr += 8; |
19175 | break; | |
c906108c | 19176 | case DW_FORM_ref_udata: |
9c541725 | 19177 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19178 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
19179 | info_ptr += bytes_read; |
19180 | break; | |
c906108c | 19181 | case DW_FORM_indirect: |
a8329558 KW |
19182 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19183 | info_ptr += bytes_read; | |
43988095 JK |
19184 | if (form == DW_FORM_implicit_const) |
19185 | { | |
19186 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19187 | info_ptr += bytes_read; | |
19188 | } | |
19189 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
18a8505e | 19190 | info_ptr, need_reprocess); |
43988095 JK |
19191 | break; |
19192 | case DW_FORM_implicit_const: | |
19193 | DW_SND (attr) = implicit_const; | |
a8329558 | 19194 | break; |
336d760d | 19195 | case DW_FORM_addrx: |
3019eac3 | 19196 | case DW_FORM_GNU_addr_index: |
18a8505e AT |
19197 | *need_reprocess = true; |
19198 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
3019eac3 DE |
19199 | info_ptr += bytes_read; |
19200 | break; | |
cf532bd1 | 19201 | case DW_FORM_strx: |
15f18d14 AT |
19202 | case DW_FORM_strx1: |
19203 | case DW_FORM_strx2: | |
19204 | case DW_FORM_strx3: | |
19205 | case DW_FORM_strx4: | |
3019eac3 | 19206 | case DW_FORM_GNU_str_index: |
3019eac3 | 19207 | { |
15f18d14 AT |
19208 | ULONGEST str_index; |
19209 | if (form == DW_FORM_strx1) | |
19210 | { | |
19211 | str_index = read_1_byte (abfd, info_ptr); | |
19212 | info_ptr += 1; | |
19213 | } | |
19214 | else if (form == DW_FORM_strx2) | |
19215 | { | |
19216 | str_index = read_2_bytes (abfd, info_ptr); | |
19217 | info_ptr += 2; | |
19218 | } | |
19219 | else if (form == DW_FORM_strx3) | |
19220 | { | |
19221 | str_index = read_3_bytes (abfd, info_ptr); | |
19222 | info_ptr += 3; | |
19223 | } | |
19224 | else if (form == DW_FORM_strx4) | |
19225 | { | |
19226 | str_index = read_4_bytes (abfd, info_ptr); | |
19227 | info_ptr += 4; | |
19228 | } | |
19229 | else | |
19230 | { | |
19231 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19232 | info_ptr += bytes_read; | |
19233 | } | |
18a8505e AT |
19234 | *need_reprocess = true; |
19235 | DW_UNSND (attr) = str_index; | |
19236 | } | |
3019eac3 | 19237 | break; |
c906108c | 19238 | default: |
8a3fe4f8 | 19239 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19240 | dwarf_form_name (form), |
19241 | bfd_get_filename (abfd)); | |
c906108c | 19242 | } |
28e94949 | 19243 | |
36586728 | 19244 | /* Super hack. */ |
cd6c91b4 | 19245 | if (cu->per_cu->is_dwz && attr->form_is_ref ()) |
36586728 TT |
19246 | attr->form = DW_FORM_GNU_ref_alt; |
19247 | ||
28e94949 JB |
19248 | /* We have seen instances where the compiler tried to emit a byte |
19249 | size attribute of -1 which ended up being encoded as an unsigned | |
19250 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19251 | an object of this size seems pretty unlikely so we can relatively | |
19252 | safely treat these cases as if the size attribute was invalid and | |
19253 | treat them as zero by default. */ | |
19254 | if (attr->name == DW_AT_byte_size | |
19255 | && form == DW_FORM_data4 | |
19256 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19257 | { |
19258 | complaint | |
b98664d3 | 19259 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
43bbcdc2 | 19260 | hex_string (DW_UNSND (attr))); |
01c66ae6 JB |
19261 | DW_UNSND (attr) = 0; |
19262 | } | |
28e94949 | 19263 | |
c906108c SS |
19264 | return info_ptr; |
19265 | } | |
19266 | ||
a8329558 KW |
19267 | /* Read an attribute described by an abbreviated attribute. */ |
19268 | ||
d521ce57 | 19269 | static const gdb_byte * |
dee91e82 DE |
19270 | read_attribute (const struct die_reader_specs *reader, |
19271 | struct attribute *attr, struct attr_abbrev *abbrev, | |
18a8505e | 19272 | const gdb_byte *info_ptr, bool *need_reprocess) |
a8329558 KW |
19273 | { |
19274 | attr->name = abbrev->name; | |
43988095 | 19275 | return read_attribute_value (reader, attr, abbrev->form, |
18a8505e AT |
19276 | abbrev->implicit_const, info_ptr, |
19277 | need_reprocess); | |
a8329558 KW |
19278 | } |
19279 | ||
43988095 JK |
19280 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ |
19281 | ||
19282 | static const char * | |
ed2dc618 | 19283 | read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4f44ae6c | 19284 | LONGEST str_offset) |
43988095 | 19285 | { |
5989a64e SM |
19286 | return dwarf2_per_objfile->per_bfd->str.read_string |
19287 | (dwarf2_per_objfile->objfile, str_offset, "DW_FORM_strp"); | |
c906108c SS |
19288 | } |
19289 | ||
43988095 JK |
19290 | /* Return pointer to string at .debug_str offset as read from BUF. |
19291 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19292 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19293 | ||
d521ce57 | 19294 | static const char * |
ed2dc618 SM |
19295 | read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, |
19296 | const gdb_byte *buf, | |
cf2c3c16 TT |
19297 | const struct comp_unit_head *cu_header, |
19298 | unsigned int *bytes_read_ptr) | |
19299 | { | |
8266302d | 19300 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
cf2c3c16 | 19301 | |
4f44ae6c | 19302 | return read_indirect_string_at_offset (dwarf2_per_objfile, str_offset); |
cf2c3c16 TT |
19303 | } |
19304 | ||
86c0bb4c | 19305 | /* See read.h. */ |
43988095 | 19306 | |
86c0bb4c TT |
19307 | const char * |
19308 | dwarf2_per_objfile::read_line_string (const gdb_byte *buf, | |
5989a64e SM |
19309 | const struct comp_unit_head *cu_header, |
19310 | unsigned int *bytes_read_ptr) | |
43988095 | 19311 | { |
86c0bb4c | 19312 | bfd *abfd = objfile->obfd; |
8266302d | 19313 | LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr); |
43988095 | 19314 | |
5989a64e | 19315 | return per_bfd->line_str.read_string (objfile, str_offset, "DW_FORM_line_strp"); |
43988095 JK |
19316 | } |
19317 | ||
3019eac3 | 19318 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
18a8505e | 19319 | ADDR_BASE is the DW_AT_addr_base (DW_AT_GNU_addr_base) attribute or zero. |
3019eac3 DE |
19320 | ADDR_SIZE is the size of addresses from the CU header. */ |
19321 | ||
19322 | static CORE_ADDR | |
ed2dc618 | 19323 | read_addr_index_1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18a8505e AT |
19324 | unsigned int addr_index, gdb::optional<ULONGEST> addr_base, |
19325 | int addr_size) | |
3019eac3 DE |
19326 | { |
19327 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19328 | bfd *abfd = objfile->obfd; | |
19329 | const gdb_byte *info_ptr; | |
18a8505e | 19330 | ULONGEST addr_base_or_zero = addr_base.has_value () ? *addr_base : 0; |
3019eac3 | 19331 | |
5989a64e SM |
19332 | dwarf2_per_objfile->per_bfd->addr.read (objfile); |
19333 | if (dwarf2_per_objfile->per_bfd->addr.buffer == NULL) | |
3019eac3 | 19334 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), |
4262abfb | 19335 | objfile_name (objfile)); |
18a8505e | 19336 | if (addr_base_or_zero + addr_index * addr_size |
5989a64e | 19337 | >= dwarf2_per_objfile->per_bfd->addr.size) |
3019eac3 DE |
19338 | error (_("DW_FORM_addr_index pointing outside of " |
19339 | ".debug_addr section [in module %s]"), | |
4262abfb | 19340 | objfile_name (objfile)); |
5989a64e | 19341 | info_ptr = (dwarf2_per_objfile->per_bfd->addr.buffer |
18a8505e | 19342 | + addr_base_or_zero + addr_index * addr_size); |
3019eac3 DE |
19343 | if (addr_size == 4) |
19344 | return bfd_get_32 (abfd, info_ptr); | |
19345 | else | |
19346 | return bfd_get_64 (abfd, info_ptr); | |
19347 | } | |
19348 | ||
19349 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
19350 | ||
19351 | static CORE_ADDR | |
19352 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
19353 | { | |
5e22e966 | 19354 | return read_addr_index_1 (cu->per_objfile, addr_index, |
518817b3 | 19355 | cu->addr_base, cu->header.addr_size); |
3019eac3 DE |
19356 | } |
19357 | ||
19358 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
19359 | ||
19360 | static CORE_ADDR | |
d521ce57 | 19361 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
19362 | unsigned int *bytes_read) |
19363 | { | |
5e22e966 | 19364 | bfd *abfd = cu->per_objfile->objfile->obfd; |
3019eac3 DE |
19365 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
19366 | ||
19367 | return read_addr_index (cu, addr_index); | |
19368 | } | |
19369 | ||
450a1bfc | 19370 | /* See read.h. */ |
3019eac3 DE |
19371 | |
19372 | CORE_ADDR | |
450a1bfc | 19373 | dwarf2_read_addr_index (dwarf2_per_cu_data *per_cu, unsigned int addr_index) |
3019eac3 | 19374 | { |
ed2dc618 | 19375 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 19376 | struct dwarf2_cu *cu = per_cu->cu; |
18a8505e | 19377 | gdb::optional<ULONGEST> addr_base; |
3019eac3 DE |
19378 | int addr_size; |
19379 | ||
3019eac3 DE |
19380 | /* We need addr_base and addr_size. |
19381 | If we don't have PER_CU->cu, we have to get it. | |
19382 | Nasty, but the alternative is storing the needed info in PER_CU, | |
19383 | which at this point doesn't seem justified: it's not clear how frequently | |
19384 | it would get used and it would increase the size of every PER_CU. | |
19385 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
19386 | so we're not in uncharted territory here. | |
19387 | Alas we need to be a bit more complicated as addr_base is contained | |
19388 | in the DIE. | |
19389 | ||
19390 | We don't need to read the entire CU(/TU). | |
19391 | We just need the header and top level die. | |
a1b64ce1 | 19392 | |
3019eac3 | 19393 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 19394 | For now we skip this optimization. */ |
3019eac3 DE |
19395 | |
19396 | if (cu != NULL) | |
19397 | { | |
19398 | addr_base = cu->addr_base; | |
19399 | addr_size = cu->header.addr_size; | |
19400 | } | |
19401 | else | |
19402 | { | |
6751ebae | 19403 | cutu_reader reader (per_cu, NULL, 0, false); |
c0ab21c2 TT |
19404 | addr_base = reader.cu->addr_base; |
19405 | addr_size = reader.cu->header.addr_size; | |
3019eac3 DE |
19406 | } |
19407 | ||
ed2dc618 SM |
19408 | return read_addr_index_1 (dwarf2_per_objfile, addr_index, addr_base, |
19409 | addr_size); | |
3019eac3 DE |
19410 | } |
19411 | ||
18a8505e AT |
19412 | /* Given a DW_FORM_GNU_str_index value STR_INDEX, fetch the string. |
19413 | STR_SECTION, STR_OFFSETS_SECTION can be from a Fission stub or a | |
19414 | DWO file. */ | |
3019eac3 | 19415 | |
d521ce57 | 19416 | static const char * |
18a8505e AT |
19417 | read_str_index (struct dwarf2_cu *cu, |
19418 | struct dwarf2_section_info *str_section, | |
19419 | struct dwarf2_section_info *str_offsets_section, | |
19420 | ULONGEST str_offsets_base, ULONGEST str_index) | |
3019eac3 | 19421 | { |
5e22e966 | 19422 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
3019eac3 | 19423 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
c5164cbc | 19424 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 19425 | bfd *abfd = objfile->obfd; |
d521ce57 | 19426 | const gdb_byte *info_ptr; |
3019eac3 | 19427 | ULONGEST str_offset; |
cf532bd1 | 19428 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 19429 | |
96b79293 TT |
19430 | str_section->read (objfile); |
19431 | str_offsets_section->read (objfile); | |
73869dc2 | 19432 | if (str_section->buffer == NULL) |
18a8505e | 19433 | error (_("%s used without %s section" |
9d8780f0 | 19434 | " in CU at offset %s [in module %s]"), |
96b79293 | 19435 | form_name, str_section->get_name (), |
18a8505e | 19436 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 19437 | if (str_offsets_section->buffer == NULL) |
18a8505e | 19438 | error (_("%s used without %s section" |
9d8780f0 | 19439 | " in CU at offset %s [in module %s]"), |
96b79293 | 19440 | form_name, str_section->get_name (), |
18a8505e | 19441 | sect_offset_str (cu->header.sect_off), objf_name); |
73869dc2 | 19442 | info_ptr = (str_offsets_section->buffer |
18a8505e | 19443 | + str_offsets_base |
3019eac3 DE |
19444 | + str_index * cu->header.offset_size); |
19445 | if (cu->header.offset_size == 4) | |
19446 | str_offset = bfd_get_32 (abfd, info_ptr); | |
19447 | else | |
19448 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 19449 | if (str_offset >= str_section->size) |
57d63ce2 | 19450 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
19451 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
19452 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19453 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
19454 | } |
19455 | ||
18a8505e AT |
19456 | /* Given a DW_FORM_GNU_str_index from a DWO file, fetch the string. */ |
19457 | ||
19458 | static const char * | |
19459 | read_dwo_str_index (const struct die_reader_specs *reader, ULONGEST str_index) | |
19460 | { | |
19461 | ULONGEST str_offsets_base = reader->cu->header.version >= 5 | |
19462 | ? reader->cu->header.addr_size : 0; | |
19463 | return read_str_index (reader->cu, | |
19464 | &reader->dwo_file->sections.str, | |
19465 | &reader->dwo_file->sections.str_offsets, | |
19466 | str_offsets_base, str_index); | |
19467 | } | |
19468 | ||
19469 | /* Given a DW_FORM_GNU_str_index from a Fission stub, fetch the string. */ | |
19470 | ||
19471 | static const char * | |
19472 | read_stub_str_index (struct dwarf2_cu *cu, ULONGEST str_index) | |
19473 | { | |
5e22e966 | 19474 | struct objfile *objfile = cu->per_objfile->objfile; |
18a8505e AT |
19475 | const char *objf_name = objfile_name (objfile); |
19476 | static const char form_name[] = "DW_FORM_GNU_str_index"; | |
19477 | static const char str_offsets_attr_name[] = "DW_AT_str_offsets"; | |
19478 | ||
19479 | if (!cu->str_offsets_base.has_value ()) | |
19480 | error (_("%s used in Fission stub without %s" | |
19481 | " in CU at offset 0x%lx [in module %s]"), | |
19482 | form_name, str_offsets_attr_name, | |
19483 | (long) cu->header.offset_size, objf_name); | |
19484 | ||
19485 | return read_str_index (cu, | |
5e22e966 SM |
19486 | &cu->per_objfile->per_bfd->str, |
19487 | &cu->per_objfile->per_bfd->str_offsets, | |
18a8505e AT |
19488 | *cu->str_offsets_base, str_index); |
19489 | } | |
19490 | ||
3019eac3 DE |
19491 | /* Return the length of an LEB128 number in BUF. */ |
19492 | ||
19493 | static int | |
19494 | leb128_size (const gdb_byte *buf) | |
19495 | { | |
19496 | const gdb_byte *begin = buf; | |
19497 | gdb_byte byte; | |
19498 | ||
19499 | while (1) | |
19500 | { | |
19501 | byte = *buf++; | |
19502 | if ((byte & 128) == 0) | |
19503 | return buf - begin; | |
19504 | } | |
19505 | } | |
19506 | ||
c906108c | 19507 | static void |
e142c38c | 19508 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
19509 | { |
19510 | switch (lang) | |
19511 | { | |
19512 | case DW_LANG_C89: | |
76bee0cc | 19513 | case DW_LANG_C99: |
0cfd832f | 19514 | case DW_LANG_C11: |
c906108c | 19515 | case DW_LANG_C: |
d1be3247 | 19516 | case DW_LANG_UPC: |
e142c38c | 19517 | cu->language = language_c; |
c906108c | 19518 | break; |
9c37b5ae | 19519 | case DW_LANG_Java: |
c906108c | 19520 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
19521 | case DW_LANG_C_plus_plus_11: |
19522 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 19523 | cu->language = language_cplus; |
c906108c | 19524 | break; |
6aecb9c2 JB |
19525 | case DW_LANG_D: |
19526 | cu->language = language_d; | |
19527 | break; | |
c906108c SS |
19528 | case DW_LANG_Fortran77: |
19529 | case DW_LANG_Fortran90: | |
b21b22e0 | 19530 | case DW_LANG_Fortran95: |
f7de9aab MW |
19531 | case DW_LANG_Fortran03: |
19532 | case DW_LANG_Fortran08: | |
e142c38c | 19533 | cu->language = language_fortran; |
c906108c | 19534 | break; |
a766d390 DE |
19535 | case DW_LANG_Go: |
19536 | cu->language = language_go; | |
19537 | break; | |
c906108c | 19538 | case DW_LANG_Mips_Assembler: |
e142c38c | 19539 | cu->language = language_asm; |
c906108c SS |
19540 | break; |
19541 | case DW_LANG_Ada83: | |
8aaf0b47 | 19542 | case DW_LANG_Ada95: |
bc5f45f8 JB |
19543 | cu->language = language_ada; |
19544 | break; | |
72019c9c GM |
19545 | case DW_LANG_Modula2: |
19546 | cu->language = language_m2; | |
19547 | break; | |
fe8e67fd PM |
19548 | case DW_LANG_Pascal83: |
19549 | cu->language = language_pascal; | |
19550 | break; | |
22566fbd DJ |
19551 | case DW_LANG_ObjC: |
19552 | cu->language = language_objc; | |
19553 | break; | |
c44af4eb TT |
19554 | case DW_LANG_Rust: |
19555 | case DW_LANG_Rust_old: | |
19556 | cu->language = language_rust; | |
19557 | break; | |
c906108c SS |
19558 | case DW_LANG_Cobol74: |
19559 | case DW_LANG_Cobol85: | |
c906108c | 19560 | default: |
e142c38c | 19561 | cu->language = language_minimal; |
c906108c SS |
19562 | break; |
19563 | } | |
e142c38c | 19564 | cu->language_defn = language_def (cu->language); |
c906108c SS |
19565 | } |
19566 | ||
19567 | /* Return the named attribute or NULL if not there. */ | |
19568 | ||
19569 | static struct attribute * | |
e142c38c | 19570 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 19571 | { |
a48e046c | 19572 | for (;;) |
c906108c | 19573 | { |
a48e046c TT |
19574 | unsigned int i; |
19575 | struct attribute *spec = NULL; | |
19576 | ||
19577 | for (i = 0; i < die->num_attrs; ++i) | |
19578 | { | |
19579 | if (die->attrs[i].name == name) | |
19580 | return &die->attrs[i]; | |
19581 | if (die->attrs[i].name == DW_AT_specification | |
19582 | || die->attrs[i].name == DW_AT_abstract_origin) | |
19583 | spec = &die->attrs[i]; | |
19584 | } | |
19585 | ||
19586 | if (!spec) | |
19587 | break; | |
c906108c | 19588 | |
f2f0e013 | 19589 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 19590 | } |
c5aa993b | 19591 | |
c906108c SS |
19592 | return NULL; |
19593 | } | |
19594 | ||
7d45c7c3 KB |
19595 | /* Return the string associated with a string-typed attribute, or NULL if it |
19596 | is either not found or is of an incorrect type. */ | |
19597 | ||
19598 | static const char * | |
19599 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
19600 | { | |
19601 | struct attribute *attr; | |
19602 | const char *str = NULL; | |
19603 | ||
19604 | attr = dwarf2_attr (die, name, cu); | |
19605 | ||
19606 | if (attr != NULL) | |
19607 | { | |
e61108c9 TT |
19608 | str = attr->value_as_string (); |
19609 | if (str == nullptr) | |
b98664d3 | 19610 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
19611 | "DIE at %s in module %s"), |
19612 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
5e22e966 | 19613 | objfile_name (cu->per_objfile->objfile)); |
7d45c7c3 KB |
19614 | } |
19615 | ||
19616 | return str; | |
19617 | } | |
19618 | ||
a084a2a6 | 19619 | /* Return the dwo name or NULL if not present. If present, it is in either |
85102364 | 19620 | DW_AT_GNU_dwo_name or DW_AT_dwo_name attribute. */ |
a084a2a6 AT |
19621 | static const char * |
19622 | dwarf2_dwo_name (struct die_info *die, struct dwarf2_cu *cu) | |
19623 | { | |
19624 | const char *dwo_name = dwarf2_string_attr (die, DW_AT_GNU_dwo_name, cu); | |
19625 | if (dwo_name == nullptr) | |
19626 | dwo_name = dwarf2_string_attr (die, DW_AT_dwo_name, cu); | |
19627 | return dwo_name; | |
19628 | } | |
19629 | ||
05cf31d1 JB |
19630 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
19631 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 19632 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
19633 | |
19634 | static int | |
19635 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
19636 | { | |
19637 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
19638 | ||
19639 | return (attr && DW_UNSND (attr)); | |
19640 | } | |
19641 | ||
3ca72b44 | 19642 | static int |
e142c38c | 19643 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 19644 | { |
05cf31d1 JB |
19645 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
19646 | which value is non-zero. However, we have to be careful with | |
19647 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
19648 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
19649 | end up accidently finding a declaration attribute that belongs | |
19650 | to a different DIE referenced by the specification attribute, | |
19651 | even though the given DIE does not have a declaration attribute. */ | |
19652 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
19653 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
19654 | } |
19655 | ||
63d06c5c | 19656 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 19657 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
19658 | containing the return value on output. If there is no |
19659 | specification, but there is an abstract origin, that is | |
19660 | returned. */ | |
63d06c5c DC |
19661 | |
19662 | static struct die_info * | |
f2f0e013 | 19663 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 19664 | { |
f2f0e013 DJ |
19665 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
19666 | *spec_cu); | |
63d06c5c | 19667 | |
edb3359d DJ |
19668 | if (spec_attr == NULL) |
19669 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
19670 | ||
63d06c5c DC |
19671 | if (spec_attr == NULL) |
19672 | return NULL; | |
19673 | else | |
f2f0e013 | 19674 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 19675 | } |
c906108c | 19676 | |
527f3840 JK |
19677 | /* Stub for free_line_header to match void * callback types. */ |
19678 | ||
19679 | static void | |
19680 | free_line_header_voidp (void *arg) | |
19681 | { | |
9a3c8263 | 19682 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 19683 | |
fff8551c | 19684 | delete lh; |
527f3840 JK |
19685 | } |
19686 | ||
83769d0b | 19687 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
19688 | |
19689 | static struct dwarf2_section_info * | |
19690 | get_debug_line_section (struct dwarf2_cu *cu) | |
19691 | { | |
19692 | struct dwarf2_section_info *section; | |
5e22e966 | 19693 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
36586728 TT |
19694 | |
19695 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
19696 | DWO file. */ | |
19697 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
19698 | section = &cu->dwo_unit->dwo_file->sections.line; | |
19699 | else if (cu->per_cu->is_dwz) | |
19700 | { | |
c3699833 | 19701 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile->per_bfd); |
36586728 TT |
19702 | |
19703 | section = &dwz->line; | |
19704 | } | |
19705 | else | |
5989a64e | 19706 | section = &dwarf2_per_objfile->per_bfd->line; |
36586728 TT |
19707 | |
19708 | return section; | |
19709 | } | |
19710 | ||
debd256d | 19711 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 19712 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 19713 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
19714 | Returns NULL if there is a problem reading the header, e.g., if it |
19715 | has a version we don't understand. | |
debd256d JB |
19716 | |
19717 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
19718 | the returned object point into the dwarf line section buffer, |
19719 | and must not be freed. */ | |
ae2de4f8 | 19720 | |
fff8551c | 19721 | static line_header_up |
9c541725 | 19722 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 19723 | { |
3019eac3 | 19724 | struct dwarf2_section_info *section; |
5e22e966 | 19725 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
3019eac3 | 19726 | |
36586728 | 19727 | section = get_debug_line_section (cu); |
96b79293 | 19728 | section->read (dwarf2_per_objfile->objfile); |
3019eac3 | 19729 | if (section->buffer == NULL) |
debd256d | 19730 | { |
3019eac3 | 19731 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 19732 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 19733 | else |
b98664d3 | 19734 | complaint (_("missing .debug_line section")); |
debd256d JB |
19735 | return 0; |
19736 | } | |
19737 | ||
0df7ad3a TT |
19738 | return dwarf_decode_line_header (sect_off, cu->per_cu->is_dwz, |
19739 | dwarf2_per_objfile, section, | |
19740 | &cu->header); | |
debd256d | 19741 | } |
c906108c | 19742 | |
c6da4cef | 19743 | /* Subroutine of dwarf_decode_lines to simplify it. |
7ba99d21 | 19744 | Return the file name of the psymtab for the given file_entry. |
c6da4cef | 19745 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. |
c89b44cd TT |
19746 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
19747 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 19748 | |
d521ce57 | 19749 | static const char * |
7ba99d21 | 19750 | psymtab_include_file_name (const struct line_header *lh, const file_entry &fe, |
891813be | 19751 | const dwarf2_psymtab *pst, |
c89b44cd TT |
19752 | const char *comp_dir, |
19753 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 19754 | { |
d521ce57 TT |
19755 | const char *include_name = fe.name; |
19756 | const char *include_name_to_compare = include_name; | |
72b9f47f | 19757 | const char *pst_filename; |
c6da4cef DE |
19758 | int file_is_pst; |
19759 | ||
8c43009f | 19760 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 19761 | |
c89b44cd | 19762 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
19763 | if (!IS_ABSOLUTE_PATH (include_name) |
19764 | && (dir_name != NULL || comp_dir != NULL)) | |
19765 | { | |
19766 | /* Avoid creating a duplicate psymtab for PST. | |
19767 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
19768 | Before we do the comparison, however, we need to account | |
19769 | for DIR_NAME and COMP_DIR. | |
19770 | First prepend dir_name (if non-NULL). If we still don't | |
19771 | have an absolute path prepend comp_dir (if non-NULL). | |
19772 | However, the directory we record in the include-file's | |
19773 | psymtab does not contain COMP_DIR (to match the | |
19774 | corresponding symtab(s)). | |
19775 | ||
19776 | Example: | |
19777 | ||
19778 | bash$ cd /tmp | |
19779 | bash$ gcc -g ./hello.c | |
19780 | include_name = "hello.c" | |
19781 | dir_name = "." | |
19782 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
19783 | DW_AT_name = "./hello.c" |
19784 | ||
19785 | */ | |
c6da4cef DE |
19786 | |
19787 | if (dir_name != NULL) | |
19788 | { | |
c89b44cd TT |
19789 | name_holder->reset (concat (dir_name, SLASH_STRING, |
19790 | include_name, (char *) NULL)); | |
19791 | include_name = name_holder->get (); | |
c6da4cef | 19792 | include_name_to_compare = include_name; |
c6da4cef DE |
19793 | } |
19794 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
19795 | { | |
c89b44cd TT |
19796 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
19797 | include_name, (char *) NULL)); | |
19798 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
19799 | } |
19800 | } | |
19801 | ||
19802 | pst_filename = pst->filename; | |
c89b44cd | 19803 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
19804 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
19805 | { | |
c89b44cd TT |
19806 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
19807 | pst_filename, (char *) NULL)); | |
19808 | pst_filename = copied_name.get (); | |
c6da4cef DE |
19809 | } |
19810 | ||
1e3fad37 | 19811 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 19812 | |
c6da4cef DE |
19813 | if (file_is_pst) |
19814 | return NULL; | |
19815 | return include_name; | |
19816 | } | |
19817 | ||
d9b3de22 DE |
19818 | /* State machine to track the state of the line number program. */ |
19819 | ||
6f77053d | 19820 | class lnp_state_machine |
d9b3de22 | 19821 | { |
6f77053d PA |
19822 | public: |
19823 | /* Initialize a machine state for the start of a line number | |
19824 | program. */ | |
804d2729 TT |
19825 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
19826 | bool record_lines_p); | |
6f77053d | 19827 | |
8c43009f PA |
19828 | file_entry *current_file () |
19829 | { | |
19830 | /* lh->file_names is 0-based, but the file name numbers in the | |
19831 | statement program are 1-based. */ | |
6f77053d PA |
19832 | return m_line_header->file_name_at (m_file); |
19833 | } | |
19834 | ||
19835 | /* Record the line in the state machine. END_SEQUENCE is true if | |
19836 | we're processing the end of a sequence. */ | |
19837 | void record_line (bool end_sequence); | |
19838 | ||
7ab6656f OJ |
19839 | /* Check ADDRESS is zero and less than UNRELOCATED_LOWPC and if true |
19840 | nop-out rest of the lines in this sequence. */ | |
6f77053d PA |
19841 | void check_line_address (struct dwarf2_cu *cu, |
19842 | const gdb_byte *line_ptr, | |
7ab6656f | 19843 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
19844 | |
19845 | void handle_set_discriminator (unsigned int discriminator) | |
19846 | { | |
19847 | m_discriminator = discriminator; | |
19848 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
19849 | } | |
19850 | ||
19851 | /* Handle DW_LNE_set_address. */ | |
19852 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
19853 | { | |
19854 | m_op_index = 0; | |
19855 | address += baseaddr; | |
19856 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
19857 | } | |
19858 | ||
19859 | /* Handle DW_LNS_advance_pc. */ | |
19860 | void handle_advance_pc (CORE_ADDR adjust); | |
19861 | ||
19862 | /* Handle a special opcode. */ | |
19863 | void handle_special_opcode (unsigned char op_code); | |
19864 | ||
19865 | /* Handle DW_LNS_advance_line. */ | |
19866 | void handle_advance_line (int line_delta) | |
19867 | { | |
19868 | advance_line (line_delta); | |
19869 | } | |
19870 | ||
19871 | /* Handle DW_LNS_set_file. */ | |
19872 | void handle_set_file (file_name_index file); | |
19873 | ||
19874 | /* Handle DW_LNS_negate_stmt. */ | |
19875 | void handle_negate_stmt () | |
19876 | { | |
19877 | m_is_stmt = !m_is_stmt; | |
19878 | } | |
19879 | ||
19880 | /* Handle DW_LNS_const_add_pc. */ | |
19881 | void handle_const_add_pc (); | |
19882 | ||
19883 | /* Handle DW_LNS_fixed_advance_pc. */ | |
19884 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
19885 | { | |
19886 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
19887 | m_op_index = 0; | |
19888 | } | |
19889 | ||
19890 | /* Handle DW_LNS_copy. */ | |
19891 | void handle_copy () | |
19892 | { | |
19893 | record_line (false); | |
19894 | m_discriminator = 0; | |
19895 | } | |
19896 | ||
19897 | /* Handle DW_LNE_end_sequence. */ | |
19898 | void handle_end_sequence () | |
19899 | { | |
804d2729 | 19900 | m_currently_recording_lines = true; |
6f77053d PA |
19901 | } |
19902 | ||
19903 | private: | |
19904 | /* Advance the line by LINE_DELTA. */ | |
19905 | void advance_line (int line_delta) | |
19906 | { | |
19907 | m_line += line_delta; | |
19908 | ||
19909 | if (line_delta != 0) | |
19910 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
19911 | } |
19912 | ||
804d2729 TT |
19913 | struct dwarf2_cu *m_cu; |
19914 | ||
6f77053d PA |
19915 | gdbarch *m_gdbarch; |
19916 | ||
19917 | /* True if we're recording lines. | |
19918 | Otherwise we're building partial symtabs and are just interested in | |
19919 | finding include files mentioned by the line number program. */ | |
19920 | bool m_record_lines_p; | |
19921 | ||
8c43009f | 19922 | /* The line number header. */ |
6f77053d | 19923 | line_header *m_line_header; |
8c43009f | 19924 | |
6f77053d PA |
19925 | /* These are part of the standard DWARF line number state machine, |
19926 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 19927 | |
6f77053d | 19928 | unsigned char m_op_index = 0; |
7ba99d21 AT |
19929 | /* The line table index of the current file. */ |
19930 | file_name_index m_file = 1; | |
6f77053d PA |
19931 | unsigned int m_line = 1; |
19932 | ||
19933 | /* These are initialized in the constructor. */ | |
19934 | ||
19935 | CORE_ADDR m_address; | |
19936 | bool m_is_stmt; | |
19937 | unsigned int m_discriminator; | |
d9b3de22 DE |
19938 | |
19939 | /* Additional bits of state we need to track. */ | |
19940 | ||
19941 | /* The last file that we called dwarf2_start_subfile for. | |
19942 | This is only used for TLLs. */ | |
6f77053d | 19943 | unsigned int m_last_file = 0; |
d9b3de22 | 19944 | /* The last file a line number was recorded for. */ |
6f77053d | 19945 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 19946 | |
804d2729 TT |
19947 | /* When true, record the lines we decode. */ |
19948 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
19949 | |
19950 | /* The last line number that was recorded, used to coalesce | |
19951 | consecutive entries for the same line. This can happen, for | |
19952 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
19953 | unsigned int m_last_line = 0; |
19954 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 19955 | }; |
d9b3de22 | 19956 | |
6f77053d PA |
19957 | void |
19958 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
19959 | { | |
19960 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
19961 | / m_line_header->maximum_ops_per_instruction) | |
19962 | * m_line_header->minimum_instruction_length); | |
19963 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
19964 | m_op_index = ((m_op_index + adjust) | |
19965 | % m_line_header->maximum_ops_per_instruction); | |
19966 | } | |
d9b3de22 | 19967 | |
6f77053d PA |
19968 | void |
19969 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 19970 | { |
6f77053d | 19971 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
258bf0ee RB |
19972 | unsigned char adj_opcode_d = adj_opcode / m_line_header->line_range; |
19973 | unsigned char adj_opcode_r = adj_opcode % m_line_header->line_range; | |
19974 | CORE_ADDR addr_adj = (((m_op_index + adj_opcode_d) | |
6f77053d PA |
19975 | / m_line_header->maximum_ops_per_instruction) |
19976 | * m_line_header->minimum_instruction_length); | |
19977 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
258bf0ee | 19978 | m_op_index = ((m_op_index + adj_opcode_d) |
6f77053d | 19979 | % m_line_header->maximum_ops_per_instruction); |
d9b3de22 | 19980 | |
258bf0ee | 19981 | int line_delta = m_line_header->line_base + adj_opcode_r; |
6f77053d PA |
19982 | advance_line (line_delta); |
19983 | record_line (false); | |
19984 | m_discriminator = 0; | |
19985 | } | |
d9b3de22 | 19986 | |
6f77053d PA |
19987 | void |
19988 | lnp_state_machine::handle_set_file (file_name_index file) | |
19989 | { | |
19990 | m_file = file; | |
19991 | ||
19992 | const file_entry *fe = current_file (); | |
19993 | if (fe == NULL) | |
19994 | dwarf2_debug_line_missing_file_complaint (); | |
19995 | else if (m_record_lines_p) | |
19996 | { | |
19997 | const char *dir = fe->include_dir (m_line_header); | |
19998 | ||
c24bdb02 | 19999 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 20000 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 20001 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
20002 | } |
20003 | } | |
20004 | ||
20005 | void | |
20006 | lnp_state_machine::handle_const_add_pc () | |
20007 | { | |
20008 | CORE_ADDR adjust | |
20009 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
20010 | ||
20011 | CORE_ADDR addr_adj | |
20012 | = (((m_op_index + adjust) | |
20013 | / m_line_header->maximum_ops_per_instruction) | |
20014 | * m_line_header->minimum_instruction_length); | |
20015 | ||
20016 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20017 | m_op_index = ((m_op_index + adjust) | |
20018 | % m_line_header->maximum_ops_per_instruction); | |
20019 | } | |
d9b3de22 | 20020 | |
a05a36a5 DE |
20021 | /* Return non-zero if we should add LINE to the line number table. |
20022 | LINE is the line to add, LAST_LINE is the last line that was added, | |
20023 | LAST_SUBFILE is the subfile for LAST_LINE. | |
20024 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
20025 | had a non-zero discriminator. | |
20026 | ||
20027 | We have to be careful in the presence of discriminators. | |
20028 | E.g., for this line: | |
20029 | ||
20030 | for (i = 0; i < 100000; i++); | |
20031 | ||
20032 | clang can emit four line number entries for that one line, | |
20033 | each with a different discriminator. | |
20034 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
20035 | ||
20036 | However, we want gdb to coalesce all four entries into one. | |
20037 | Otherwise the user could stepi into the middle of the line and | |
20038 | gdb would get confused about whether the pc really was in the | |
20039 | middle of the line. | |
20040 | ||
20041 | Things are further complicated by the fact that two consecutive | |
20042 | line number entries for the same line is a heuristic used by gcc | |
20043 | to denote the end of the prologue. So we can't just discard duplicate | |
20044 | entries, we have to be selective about it. The heuristic we use is | |
20045 | that we only collapse consecutive entries for the same line if at least | |
20046 | one of those entries has a non-zero discriminator. PR 17276. | |
20047 | ||
20048 | Note: Addresses in the line number state machine can never go backwards | |
20049 | within one sequence, thus this coalescing is ok. */ | |
20050 | ||
20051 | static int | |
804d2729 TT |
20052 | dwarf_record_line_p (struct dwarf2_cu *cu, |
20053 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
20054 | int line_has_non_zero_discriminator, |
20055 | struct subfile *last_subfile) | |
20056 | { | |
c24bdb02 | 20057 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
20058 | return 1; |
20059 | if (line != last_line) | |
20060 | return 1; | |
20061 | /* Same line for the same file that we've seen already. | |
20062 | As a last check, for pr 17276, only record the line if the line | |
20063 | has never had a non-zero discriminator. */ | |
20064 | if (!line_has_non_zero_discriminator) | |
20065 | return 1; | |
20066 | return 0; | |
20067 | } | |
20068 | ||
804d2729 TT |
20069 | /* Use the CU's builder to record line number LINE beginning at |
20070 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
20071 | |
20072 | static void | |
d9b3de22 | 20073 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
8c95582d | 20074 | unsigned int line, CORE_ADDR address, bool is_stmt, |
804d2729 | 20075 | struct dwarf2_cu *cu) |
252a6764 DE |
20076 | { |
20077 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
20078 | ||
27e0867f DE |
20079 | if (dwarf_line_debug) |
20080 | { | |
20081 | fprintf_unfiltered (gdb_stdlog, | |
20082 | "Recording line %u, file %s, address %s\n", | |
20083 | line, lbasename (subfile->name), | |
20084 | paddress (gdbarch, address)); | |
20085 | } | |
20086 | ||
804d2729 | 20087 | if (cu != nullptr) |
8c95582d | 20088 | cu->get_builder ()->record_line (subfile, line, addr, is_stmt); |
252a6764 DE |
20089 | } |
20090 | ||
20091 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
20092 | Mark the end of a set of line number records. | |
d9b3de22 | 20093 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
20094 | If SUBFILE is NULL the request is ignored. */ |
20095 | ||
20096 | static void | |
20097 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 20098 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 20099 | { |
27e0867f DE |
20100 | if (subfile == NULL) |
20101 | return; | |
20102 | ||
20103 | if (dwarf_line_debug) | |
20104 | { | |
20105 | fprintf_unfiltered (gdb_stdlog, | |
20106 | "Finishing current line, file %s, address %s\n", | |
20107 | lbasename (subfile->name), | |
20108 | paddress (gdbarch, address)); | |
20109 | } | |
20110 | ||
8c95582d | 20111 | dwarf_record_line_1 (gdbarch, subfile, 0, address, true, cu); |
d9b3de22 DE |
20112 | } |
20113 | ||
6f77053d PA |
20114 | void |
20115 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 20116 | { |
d9b3de22 DE |
20117 | if (dwarf_line_debug) |
20118 | { | |
20119 | fprintf_unfiltered (gdb_stdlog, | |
20120 | "Processing actual line %u: file %u," | |
94a72be7 | 20121 | " address %s, is_stmt %u, discrim %u%s\n", |
7ba99d21 | 20122 | m_line, m_file, |
6f77053d | 20123 | paddress (m_gdbarch, m_address), |
94a72be7 AB |
20124 | m_is_stmt, m_discriminator, |
20125 | (end_sequence ? "\t(end sequence)" : "")); | |
d9b3de22 DE |
20126 | } |
20127 | ||
6f77053d | 20128 | file_entry *fe = current_file (); |
8c43009f PA |
20129 | |
20130 | if (fe == NULL) | |
d9b3de22 DE |
20131 | dwarf2_debug_line_missing_file_complaint (); |
20132 | /* For now we ignore lines not starting on an instruction boundary. | |
20133 | But not when processing end_sequence for compatibility with the | |
20134 | previous version of the code. */ | |
6f77053d | 20135 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 20136 | { |
8c43009f | 20137 | fe->included_p = 1; |
8c95582d | 20138 | if (m_record_lines_p) |
d9b3de22 | 20139 | { |
c24bdb02 | 20140 | if (m_last_subfile != m_cu->get_builder ()->get_current_subfile () |
804d2729 | 20141 | || end_sequence) |
d9b3de22 | 20142 | { |
804d2729 TT |
20143 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
20144 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
20145 | } |
20146 | ||
20147 | if (!end_sequence) | |
20148 | { | |
8c95582d AB |
20149 | bool is_stmt = producer_is_codewarrior (m_cu) || m_is_stmt; |
20150 | ||
804d2729 | 20151 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
20152 | m_line_has_non_zero_discriminator, |
20153 | m_last_subfile)) | |
d9b3de22 | 20154 | { |
c24bdb02 | 20155 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 20156 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 20157 | builder->get_current_subfile (), |
8c95582d | 20158 | m_line, m_address, is_stmt, |
804d2729 | 20159 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 20160 | } |
c24bdb02 | 20161 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 20162 | m_last_line = m_line; |
d9b3de22 DE |
20163 | } |
20164 | } | |
20165 | } | |
20166 | } | |
20167 | ||
804d2729 TT |
20168 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
20169 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 20170 | { |
804d2729 | 20171 | m_cu = cu; |
6f77053d PA |
20172 | m_gdbarch = arch; |
20173 | m_record_lines_p = record_lines_p; | |
20174 | m_line_header = lh; | |
d9b3de22 | 20175 | |
804d2729 | 20176 | m_currently_recording_lines = true; |
d9b3de22 | 20177 | |
d9b3de22 DE |
20178 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
20179 | was a line entry for it so that the backend has a chance to adjust it | |
20180 | and also record it in case it needs it. This is currently used by MIPS | |
20181 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
20182 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
20183 | m_is_stmt = lh->default_is_stmt; | |
20184 | m_discriminator = 0; | |
252a6764 DE |
20185 | } |
20186 | ||
6f77053d PA |
20187 | void |
20188 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
20189 | const gdb_byte *line_ptr, | |
7ab6656f | 20190 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 20191 | { |
7ab6656f OJ |
20192 | /* If ADDRESS < UNRELOCATED_LOWPC then it's not a usable value, it's outside |
20193 | the pc range of the CU. However, we restrict the test to only ADDRESS | |
20194 | values of zero to preserve GDB's previous behaviour which is to handle | |
20195 | the specific case of a function being GC'd by the linker. */ | |
924c2928 | 20196 | |
7ab6656f | 20197 | if (address == 0 && address < unrelocated_lowpc) |
924c2928 DE |
20198 | { |
20199 | /* This line table is for a function which has been | |
20200 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
20201 | ||
5e22e966 | 20202 | struct objfile *objfile = cu->per_objfile->objfile; |
924c2928 DE |
20203 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
20204 | ||
b98664d3 | 20205 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 20206 | line_offset, objfile_name (objfile)); |
804d2729 TT |
20207 | m_currently_recording_lines = false; |
20208 | /* Note: m_currently_recording_lines is left as false until we see | |
20209 | DW_LNE_end_sequence. */ | |
924c2928 DE |
20210 | } |
20211 | } | |
20212 | ||
f3f5162e | 20213 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
20214 | Process the line number information in LH. |
20215 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
20216 | program in order to set included_p for every referenced header. */ | |
debd256d | 20217 | |
c906108c | 20218 | static void |
43f3e411 DE |
20219 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
20220 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 20221 | { |
d521ce57 TT |
20222 | const gdb_byte *line_ptr, *extended_end; |
20223 | const gdb_byte *line_end; | |
a8c50c1f | 20224 | unsigned int bytes_read, extended_len; |
699ca60a | 20225 | unsigned char op_code, extended_op; |
e142c38c | 20226 | CORE_ADDR baseaddr; |
5e22e966 | 20227 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 20228 | bfd *abfd = objfile->obfd; |
08feed99 | 20229 | struct gdbarch *gdbarch = objfile->arch (); |
6f77053d PA |
20230 | /* True if we're recording line info (as opposed to building partial |
20231 | symtabs and just interested in finding include files mentioned by | |
20232 | the line number program). */ | |
20233 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c | 20234 | |
b3b3bada | 20235 | baseaddr = objfile->text_section_offset (); |
c906108c | 20236 | |
debd256d JB |
20237 | line_ptr = lh->statement_program_start; |
20238 | line_end = lh->statement_program_end; | |
c906108c SS |
20239 | |
20240 | /* Read the statement sequences until there's nothing left. */ | |
20241 | while (line_ptr < line_end) | |
20242 | { | |
6f77053d PA |
20243 | /* The DWARF line number program state machine. Reset the state |
20244 | machine at the start of each sequence. */ | |
804d2729 | 20245 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 20246 | bool end_sequence = false; |
d9b3de22 | 20247 | |
8c43009f | 20248 | if (record_lines_p) |
c906108c | 20249 | { |
8c43009f PA |
20250 | /* Start a subfile for the current file of the state |
20251 | machine. */ | |
20252 | const file_entry *fe = state_machine.current_file (); | |
20253 | ||
20254 | if (fe != NULL) | |
804d2729 | 20255 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
20256 | } |
20257 | ||
a738430d | 20258 | /* Decode the table. */ |
d9b3de22 | 20259 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
20260 | { |
20261 | op_code = read_1_byte (abfd, line_ptr); | |
20262 | line_ptr += 1; | |
9aa1fe7e | 20263 | |
debd256d | 20264 | if (op_code >= lh->opcode_base) |
6e70227d | 20265 | { |
8e07a239 | 20266 | /* Special opcode. */ |
6f77053d | 20267 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
20268 | } |
20269 | else switch (op_code) | |
c906108c SS |
20270 | { |
20271 | case DW_LNS_extended_op: | |
3e43a32a MS |
20272 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
20273 | &bytes_read); | |
473b7be6 | 20274 | line_ptr += bytes_read; |
a8c50c1f | 20275 | extended_end = line_ptr + extended_len; |
c906108c SS |
20276 | extended_op = read_1_byte (abfd, line_ptr); |
20277 | line_ptr += 1; | |
20278 | switch (extended_op) | |
20279 | { | |
20280 | case DW_LNE_end_sequence: | |
6f77053d PA |
20281 | state_machine.handle_end_sequence (); |
20282 | end_sequence = true; | |
c906108c SS |
20283 | break; |
20284 | case DW_LNE_set_address: | |
d9b3de22 DE |
20285 | { |
20286 | CORE_ADDR address | |
c8a7a66f | 20287 | = cu->header.read_address (abfd, line_ptr, &bytes_read); |
d9b3de22 | 20288 | line_ptr += bytes_read; |
6f77053d PA |
20289 | |
20290 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 20291 | lowpc - baseaddr, address); |
6f77053d | 20292 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 20293 | } |
c906108c SS |
20294 | break; |
20295 | case DW_LNE_define_file: | |
debd256d | 20296 | { |
d521ce57 | 20297 | const char *cur_file; |
ecfb656c PA |
20298 | unsigned int mod_time, length; |
20299 | dir_index dindex; | |
6e70227d | 20300 | |
3e43a32a MS |
20301 | cur_file = read_direct_string (abfd, line_ptr, |
20302 | &bytes_read); | |
debd256d | 20303 | line_ptr += bytes_read; |
ecfb656c | 20304 | dindex = (dir_index) |
debd256d JB |
20305 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
20306 | line_ptr += bytes_read; | |
20307 | mod_time = | |
20308 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20309 | line_ptr += bytes_read; | |
20310 | length = | |
20311 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20312 | line_ptr += bytes_read; | |
ecfb656c | 20313 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 20314 | } |
c906108c | 20315 | break; |
d0c6ba3d | 20316 | case DW_LNE_set_discriminator: |
6f77053d PA |
20317 | { |
20318 | /* The discriminator is not interesting to the | |
20319 | debugger; just ignore it. We still need to | |
20320 | check its value though: | |
20321 | if there are consecutive entries for the same | |
20322 | (non-prologue) line we want to coalesce them. | |
20323 | PR 17276. */ | |
20324 | unsigned int discr | |
20325 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20326 | line_ptr += bytes_read; | |
20327 | ||
20328 | state_machine.handle_set_discriminator (discr); | |
20329 | } | |
d0c6ba3d | 20330 | break; |
c906108c | 20331 | default: |
b98664d3 | 20332 | complaint (_("mangled .debug_line section")); |
debd256d | 20333 | return; |
c906108c | 20334 | } |
a8c50c1f DJ |
20335 | /* Make sure that we parsed the extended op correctly. If e.g. |
20336 | we expected a different address size than the producer used, | |
20337 | we may have read the wrong number of bytes. */ | |
20338 | if (line_ptr != extended_end) | |
20339 | { | |
b98664d3 | 20340 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
20341 | return; |
20342 | } | |
c906108c SS |
20343 | break; |
20344 | case DW_LNS_copy: | |
6f77053d | 20345 | state_machine.handle_copy (); |
c906108c SS |
20346 | break; |
20347 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
20348 | { |
20349 | CORE_ADDR adjust | |
20350 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 20351 | line_ptr += bytes_read; |
6f77053d PA |
20352 | |
20353 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 20354 | } |
c906108c SS |
20355 | break; |
20356 | case DW_LNS_advance_line: | |
a05a36a5 DE |
20357 | { |
20358 | int line_delta | |
20359 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 20360 | line_ptr += bytes_read; |
6f77053d PA |
20361 | |
20362 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 20363 | } |
c906108c SS |
20364 | break; |
20365 | case DW_LNS_set_file: | |
d9b3de22 | 20366 | { |
6f77053d | 20367 | file_name_index file |
ecfb656c PA |
20368 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
20369 | &bytes_read); | |
d9b3de22 | 20370 | line_ptr += bytes_read; |
8c43009f | 20371 | |
6f77053d | 20372 | state_machine.handle_set_file (file); |
d9b3de22 | 20373 | } |
c906108c SS |
20374 | break; |
20375 | case DW_LNS_set_column: | |
0ad93d4f | 20376 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
20377 | line_ptr += bytes_read; |
20378 | break; | |
20379 | case DW_LNS_negate_stmt: | |
6f77053d | 20380 | state_machine.handle_negate_stmt (); |
c906108c SS |
20381 | break; |
20382 | case DW_LNS_set_basic_block: | |
c906108c | 20383 | break; |
c2c6d25f JM |
20384 | /* Add to the address register of the state machine the |
20385 | address increment value corresponding to special opcode | |
a738430d MK |
20386 | 255. I.e., this value is scaled by the minimum |
20387 | instruction length since special opcode 255 would have | |
b021a221 | 20388 | scaled the increment. */ |
c906108c | 20389 | case DW_LNS_const_add_pc: |
6f77053d | 20390 | state_machine.handle_const_add_pc (); |
c906108c SS |
20391 | break; |
20392 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 20393 | { |
6f77053d | 20394 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 20395 | line_ptr += 2; |
6f77053d PA |
20396 | |
20397 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 20398 | } |
c906108c | 20399 | break; |
9aa1fe7e | 20400 | default: |
a738430d MK |
20401 | { |
20402 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 20403 | int i; |
a738430d | 20404 | |
debd256d | 20405 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
20406 | { |
20407 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20408 | line_ptr += bytes_read; | |
20409 | } | |
20410 | } | |
c906108c SS |
20411 | } |
20412 | } | |
d9b3de22 DE |
20413 | |
20414 | if (!end_sequence) | |
20415 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
20416 | ||
20417 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
20418 | in which case we still finish recording the last line). */ | |
6f77053d | 20419 | state_machine.record_line (true); |
c906108c | 20420 | } |
f3f5162e DE |
20421 | } |
20422 | ||
20423 | /* Decode the Line Number Program (LNP) for the given line_header | |
20424 | structure and CU. The actual information extracted and the type | |
20425 | of structures created from the LNP depends on the value of PST. | |
20426 | ||
20427 | 1. If PST is NULL, then this procedure uses the data from the program | |
20428 | to create all necessary symbol tables, and their linetables. | |
20429 | ||
20430 | 2. If PST is not NULL, this procedure reads the program to determine | |
20431 | the list of files included by the unit represented by PST, and | |
20432 | builds all the associated partial symbol tables. | |
20433 | ||
20434 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
20435 | It is used for relative paths in the line table. | |
20436 | NOTE: When processing partial symtabs (pst != NULL), | |
20437 | comp_dir == pst->dirname. | |
20438 | ||
20439 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
20440 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
20441 | symtab we don't use it in the name of the psymtabs we create. | |
20442 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
20443 | A good testcase for this is mb-inline.exp. |
20444 | ||
527f3840 JK |
20445 | LOWPC is the lowest address in CU (or 0 if not known). |
20446 | ||
20447 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
20448 | for its PC<->lines mapping information. Otherwise only the filename | |
20449 | table is read in. */ | |
f3f5162e DE |
20450 | |
20451 | static void | |
20452 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
891813be | 20453 | struct dwarf2_cu *cu, dwarf2_psymtab *pst, |
527f3840 | 20454 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 20455 | { |
5e22e966 | 20456 | struct objfile *objfile = cu->per_objfile->objfile; |
f3f5162e | 20457 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 20458 | |
527f3840 JK |
20459 | if (decode_mapping) |
20460 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
20461 | |
20462 | if (decode_for_pst_p) | |
20463 | { | |
aaa75496 JB |
20464 | /* Now that we're done scanning the Line Header Program, we can |
20465 | create the psymtab of each included file. */ | |
7ba99d21 AT |
20466 | for (auto &file_entry : lh->file_names ()) |
20467 | if (file_entry.included_p == 1) | |
aaa75496 | 20468 | { |
c89b44cd | 20469 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 20470 | const char *include_name = |
7ba99d21 AT |
20471 | psymtab_include_file_name (lh, file_entry, pst, |
20472 | comp_dir, &name_holder); | |
c6da4cef | 20473 | if (include_name != NULL) |
aaa75496 JB |
20474 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
20475 | } | |
20476 | } | |
cb1df416 DJ |
20477 | else |
20478 | { | |
20479 | /* Make sure a symtab is created for every file, even files | |
20480 | which contain only variables (i.e. no code with associated | |
20481 | line numbers). */ | |
c24bdb02 KS |
20482 | buildsym_compunit *builder = cu->get_builder (); |
20483 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 20484 | |
7ba99d21 | 20485 | for (auto &fe : lh->file_names ()) |
cb1df416 | 20486 | { |
804d2729 | 20487 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
c24bdb02 | 20488 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 20489 | { |
c24bdb02 | 20490 | builder->get_current_subfile ()->symtab |
804d2729 | 20491 | = allocate_symtab (cust, |
c24bdb02 | 20492 | builder->get_current_subfile ()->name); |
43f3e411 | 20493 | } |
c24bdb02 | 20494 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
20495 | } |
20496 | } | |
c906108c SS |
20497 | } |
20498 | ||
20499 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
20500 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 20501 | or NULL if not known. |
c906108c SS |
20502 | This routine tries to keep line numbers from identical absolute and |
20503 | relative file names in a common subfile. | |
20504 | ||
20505 | Using the `list' example from the GDB testsuite, which resides in | |
20506 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
20507 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
20508 | ||
c5aa993b | 20509 | DW_AT_name: /srcdir/list0.c |
4d663531 | 20510 | DW_AT_comp_dir: /compdir |
357e46e7 | 20511 | files.files[0].name: list0.h |
c5aa993b | 20512 | files.files[0].dir: /srcdir |
357e46e7 | 20513 | files.files[1].name: list0.c |
c5aa993b | 20514 | files.files[1].dir: /srcdir |
c906108c SS |
20515 | |
20516 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
20517 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
20518 | start_subfile will ensure that this happens provided that we pass the | |
20519 | concatenation of files.files[1].dir and files.files[1].name as the | |
20520 | subfile's name. */ | |
c906108c SS |
20521 | |
20522 | static void | |
804d2729 TT |
20523 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
20524 | const char *dirname) | |
c906108c | 20525 | { |
43816ebc | 20526 | gdb::unique_xmalloc_ptr<char> copy; |
4f1520fb | 20527 | |
4d663531 | 20528 | /* In order not to lose the line information directory, |
4f1520fb FR |
20529 | we concatenate it to the filename when it makes sense. |
20530 | Note that the Dwarf3 standard says (speaking of filenames in line | |
20531 | information): ``The directory index is ignored for file names | |
20532 | that represent full path names''. Thus ignoring dirname in the | |
20533 | `else' branch below isn't an issue. */ | |
c906108c | 20534 | |
d5166ae1 | 20535 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 | 20536 | { |
43816ebc TT |
20537 | copy.reset (concat (dirname, SLASH_STRING, filename, (char *) NULL)); |
20538 | filename = copy.get (); | |
d521ce57 | 20539 | } |
c906108c | 20540 | |
c24bdb02 | 20541 | cu->get_builder ()->start_subfile (filename); |
c906108c SS |
20542 | } |
20543 | ||
804d2729 TT |
20544 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
20545 | buildsym_compunit constructor. */ | |
f4dc4d17 | 20546 | |
c24bdb02 KS |
20547 | struct compunit_symtab * |
20548 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
20549 | CORE_ADDR low_pc) | |
f4dc4d17 | 20550 | { |
c24bdb02 | 20551 | gdb_assert (m_builder == nullptr); |
43f3e411 | 20552 | |
c24bdb02 KS |
20553 | m_builder.reset (new struct buildsym_compunit |
20554 | (per_cu->dwarf2_per_objfile->objfile, | |
20555 | name, comp_dir, language, low_pc)); | |
93b8bea4 | 20556 | |
c24bdb02 | 20557 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 20558 | |
c24bdb02 KS |
20559 | get_builder ()->record_debugformat ("DWARF 2"); |
20560 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 20561 | |
c24bdb02 | 20562 | processing_has_namespace_info = false; |
43f3e411 | 20563 | |
c24bdb02 | 20564 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
20565 | } |
20566 | ||
4c2df51b DJ |
20567 | static void |
20568 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 20569 | struct dwarf2_cu *cu) |
4c2df51b | 20570 | { |
5e22e966 | 20571 | struct objfile *objfile = cu->per_objfile->objfile; |
e7c27a73 DJ |
20572 | struct comp_unit_head *cu_header = &cu->header; |
20573 | ||
4c2df51b DJ |
20574 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
20575 | code here to turn a symbol with DW_AT_external and a | |
20576 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
20577 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
20578 | with some versions of binutils) where shared libraries could have | |
20579 | relocations against symbols in their debug information - the | |
20580 | minimal symbol would have the right address, but the debug info | |
20581 | would not. It's no longer necessary, because we will explicitly | |
20582 | apply relocations when we read in the debug information now. */ | |
20583 | ||
20584 | /* A DW_AT_location attribute with no contents indicates that a | |
20585 | variable has been optimized away. */ | |
4fc6c0d5 | 20586 | if (attr->form_is_block () && DW_BLOCK (attr)->size == 0) |
4c2df51b | 20587 | { |
f1e6e072 | 20588 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
20589 | return; |
20590 | } | |
20591 | ||
20592 | /* Handle one degenerate form of location expression specially, to | |
20593 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
20594 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
20595 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b | 20596 | |
4fc6c0d5 | 20597 | if (attr->form_is_block () |
3019eac3 DE |
20598 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
20599 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
336d760d AT |
20600 | || ((DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index |
20601 | || DW_BLOCK (attr)->data[0] == DW_OP_addrx) | |
3019eac3 DE |
20602 | && (DW_BLOCK (attr)->size |
20603 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 20604 | { |
891d2f0b | 20605 | unsigned int dummy; |
4c2df51b | 20606 | |
3019eac3 | 20607 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
c8a7a66f TT |
20608 | SET_SYMBOL_VALUE_ADDRESS |
20609 | (sym, cu->header.read_address (objfile->obfd, | |
20610 | DW_BLOCK (attr)->data + 1, | |
20611 | &dummy)); | |
3019eac3 | 20612 | else |
38583298 TT |
20613 | SET_SYMBOL_VALUE_ADDRESS |
20614 | (sym, read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, | |
20615 | &dummy)); | |
f1e6e072 | 20616 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b | 20617 | fixup_symbol_section (sym, objfile); |
6a053cb1 TT |
20618 | SET_SYMBOL_VALUE_ADDRESS |
20619 | (sym, | |
20620 | SYMBOL_VALUE_ADDRESS (sym) | |
20621 | + objfile->section_offsets[SYMBOL_SECTION (sym)]); | |
4c2df51b DJ |
20622 | return; |
20623 | } | |
20624 | ||
20625 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
20626 | expression evaluator, and use LOC_COMPUTED only when necessary | |
20627 | (i.e. when the value of a register or memory location is | |
20628 | referenced, or a thread-local block, etc.). Then again, it might | |
20629 | not be worthwhile. I'm assuming that it isn't unless performance | |
20630 | or memory numbers show me otherwise. */ | |
20631 | ||
f1e6e072 | 20632 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 20633 | |
f1e6e072 | 20634 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 20635 | cu->has_loclist = true; |
4c2df51b DJ |
20636 | } |
20637 | ||
c906108c SS |
20638 | /* Given a pointer to a DWARF information entry, figure out if we need |
20639 | to make a symbol table entry for it, and if so, create a new entry | |
20640 | and return a pointer to it. | |
20641 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
20642 | used the passed type. |
20643 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
20644 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
20645 | |
20646 | static struct symbol * | |
5e2db402 TT |
20647 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
20648 | struct symbol *space) | |
c906108c | 20649 | { |
5e22e966 | 20650 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 20651 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
08feed99 | 20652 | struct gdbarch *gdbarch = objfile->arch (); |
c906108c | 20653 | struct symbol *sym = NULL; |
15d034d0 | 20654 | const char *name; |
c906108c SS |
20655 | struct attribute *attr = NULL; |
20656 | struct attribute *attr2 = NULL; | |
e142c38c | 20657 | CORE_ADDR baseaddr; |
e37fd15a SW |
20658 | struct pending **list_to_add = NULL; |
20659 | ||
edb3359d | 20660 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c | 20661 | |
b3b3bada | 20662 | baseaddr = objfile->text_section_offset (); |
c906108c | 20663 | |
94af9270 | 20664 | name = dwarf2_name (die, cu); |
c906108c SS |
20665 | if (name) |
20666 | { | |
34eaf542 | 20667 | int suppress_add = 0; |
94af9270 | 20668 | |
34eaf542 TT |
20669 | if (space) |
20670 | sym = space; | |
20671 | else | |
8c14c3a3 | 20672 | sym = new (&objfile->objfile_obstack) symbol; |
c906108c | 20673 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
20674 | |
20675 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
d3ecddab | 20676 | sym->set_language (cu->language, &objfile->objfile_obstack); |
f55ee35c JK |
20677 | /* Fortran does not have mangling standard and the mangling does differ |
20678 | between gfortran, iFort etc. */ | |
bcfe6157 TT |
20679 | const char *physname |
20680 | = (cu->language == language_fortran | |
20681 | ? dwarf2_full_name (name, die, cu) | |
20682 | : dwarf2_physname (name, die, cu)); | |
20683 | const char *linkagename = dw2_linkage_name (die, cu); | |
20684 | ||
20685 | if (linkagename == nullptr || cu->language == language_ada) | |
20686 | sym->set_linkage_name (physname); | |
20687 | else | |
20688 | { | |
20689 | sym->set_demangled_name (physname, &objfile->objfile_obstack); | |
20690 | sym->set_linkage_name (linkagename); | |
20691 | } | |
f55ee35c | 20692 | |
c906108c | 20693 | /* Default assumptions. |
c5aa993b | 20694 | Use the passed type or decode it from the die. */ |
176620f1 | 20695 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 20696 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
20697 | if (type != NULL) |
20698 | SYMBOL_TYPE (sym) = type; | |
20699 | else | |
e7c27a73 | 20700 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
20701 | attr = dwarf2_attr (die, |
20702 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
20703 | cu); | |
435d3d88 | 20704 | if (attr != nullptr) |
c906108c SS |
20705 | { |
20706 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
20707 | } | |
cb1df416 | 20708 | |
edb3359d DJ |
20709 | attr = dwarf2_attr (die, |
20710 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
20711 | cu); | |
435d3d88 | 20712 | if (attr != nullptr) |
cb1df416 | 20713 | { |
ecfb656c | 20714 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 20715 | struct file_entry *fe; |
9a619af0 | 20716 | |
ecfb656c PA |
20717 | if (cu->line_header != NULL) |
20718 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
20719 | else |
20720 | fe = NULL; | |
20721 | ||
20722 | if (fe == NULL) | |
b98664d3 | 20723 | complaint (_("file index out of range")); |
8c43009f PA |
20724 | else |
20725 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
20726 | } |
20727 | ||
c906108c SS |
20728 | switch (die->tag) |
20729 | { | |
20730 | case DW_TAG_label: | |
e142c38c | 20731 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
435d3d88 | 20732 | if (attr != nullptr) |
3e29f34a MR |
20733 | { |
20734 | CORE_ADDR addr; | |
20735 | ||
cd6c91b4 | 20736 | addr = attr->value_as_address (); |
3e29f34a | 20737 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); |
38583298 | 20738 | SET_SYMBOL_VALUE_ADDRESS (sym, addr); |
3e29f34a | 20739 | } |
0f5238ed TT |
20740 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
20741 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 20742 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
d3cb6808 | 20743 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
20744 | break; |
20745 | case DW_TAG_subprogram: | |
20746 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
20747 | finish_block. */ | |
f1e6e072 | 20748 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 20749 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d | 20750 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
0a4b0913 AB |
20751 | || cu->language == language_ada |
20752 | || cu->language == language_fortran) | |
c906108c | 20753 | { |
2cfa0c8d | 20754 | /* Subprograms marked external are stored as a global symbol. |
0a4b0913 AB |
20755 | Ada and Fortran subprograms, whether marked external or |
20756 | not, are always stored as a global symbol, because we want | |
20757 | to be able to access them globally. For instance, we want | |
20758 | to be able to break on a nested subprogram without having | |
20759 | to specify the context. */ | |
c24bdb02 | 20760 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
20761 | } |
20762 | else | |
20763 | { | |
e37fd15a | 20764 | list_to_add = cu->list_in_scope; |
c906108c SS |
20765 | } |
20766 | break; | |
edb3359d DJ |
20767 | case DW_TAG_inlined_subroutine: |
20768 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
20769 | finish_block. */ | |
f1e6e072 | 20770 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 20771 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 20772 | list_to_add = cu->list_in_scope; |
edb3359d | 20773 | break; |
34eaf542 TT |
20774 | case DW_TAG_template_value_param: |
20775 | suppress_add = 1; | |
20776 | /* Fall through. */ | |
72929c62 | 20777 | case DW_TAG_constant: |
c906108c | 20778 | case DW_TAG_variable: |
254e6b9e | 20779 | case DW_TAG_member: |
0963b4bd MS |
20780 | /* Compilation with minimal debug info may result in |
20781 | variables with missing type entries. Change the | |
20782 | misleading `void' type to something sensible. */ | |
78134374 | 20783 | if (SYMBOL_TYPE (sym)->code () == TYPE_CODE_VOID) |
46a4882b | 20784 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 20785 | |
e142c38c | 20786 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
20787 | /* In the case of DW_TAG_member, we should only be called for |
20788 | static const members. */ | |
20789 | if (die->tag == DW_TAG_member) | |
20790 | { | |
3863f96c DE |
20791 | /* dwarf2_add_field uses die_is_declaration, |
20792 | so we do the same. */ | |
254e6b9e DE |
20793 | gdb_assert (die_is_declaration (die, cu)); |
20794 | gdb_assert (attr); | |
20795 | } | |
435d3d88 | 20796 | if (attr != nullptr) |
c906108c | 20797 | { |
e7c27a73 | 20798 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 20799 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 20800 | if (!suppress_add) |
34eaf542 TT |
20801 | { |
20802 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
c24bdb02 | 20803 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 20804 | else |
e37fd15a | 20805 | list_to_add = cu->list_in_scope; |
34eaf542 | 20806 | } |
c906108c SS |
20807 | break; |
20808 | } | |
e142c38c | 20809 | attr = dwarf2_attr (die, DW_AT_location, cu); |
435d3d88 | 20810 | if (attr != nullptr) |
c906108c | 20811 | { |
e7c27a73 | 20812 | var_decode_location (attr, sym, cu); |
e142c38c | 20813 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
20814 | |
20815 | /* Fortran explicitly imports any global symbols to the local | |
20816 | scope by DW_TAG_common_block. */ | |
20817 | if (cu->language == language_fortran && die->parent | |
20818 | && die->parent->tag == DW_TAG_common_block) | |
20819 | attr2 = NULL; | |
20820 | ||
caac4577 JG |
20821 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
20822 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
5989a64e | 20823 | && !dwarf2_per_objfile->per_bfd->has_section_at_zero) |
caac4577 JG |
20824 | { |
20825 | /* When a static variable is eliminated by the linker, | |
20826 | the corresponding debug information is not stripped | |
20827 | out, but the variable address is set to null; | |
20828 | do not add such variables into symbol table. */ | |
20829 | } | |
20830 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 20831 | { |
4b610737 TT |
20832 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
20833 | && (objfile->flags & OBJF_MAINLINE) == 0 | |
5989a64e | 20834 | && dwarf2_per_objfile->per_bfd->can_copy) |
4b610737 TT |
20835 | { |
20836 | /* A global static variable might be subject to | |
20837 | copy relocation. We first check for a local | |
20838 | minsym, though, because maybe the symbol was | |
20839 | marked hidden, in which case this would not | |
20840 | apply. */ | |
20841 | bound_minimal_symbol found | |
20842 | = (lookup_minimal_symbol_linkage | |
987012b8 | 20843 | (sym->linkage_name (), objfile)); |
4b610737 TT |
20844 | if (found.minsym != nullptr) |
20845 | sym->maybe_copied = 1; | |
20846 | } | |
f55ee35c | 20847 | |
1c809c68 TT |
20848 | /* A variable with DW_AT_external is never static, |
20849 | but it may be block-scoped. */ | |
804d2729 | 20850 | list_to_add |
c24bdb02 KS |
20851 | = ((cu->list_in_scope |
20852 | == cu->get_builder ()->get_file_symbols ()) | |
20853 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 20854 | : cu->list_in_scope); |
1c809c68 | 20855 | } |
c906108c | 20856 | else |
e37fd15a | 20857 | list_to_add = cu->list_in_scope; |
c906108c SS |
20858 | } |
20859 | else | |
20860 | { | |
20861 | /* We do not know the address of this symbol. | |
c5aa993b JM |
20862 | If it is an external symbol and we have type information |
20863 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
20864 | The address of the variable will then be determined from | |
20865 | the minimal symbol table whenever the variable is | |
20866 | referenced. */ | |
e142c38c | 20867 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
20868 | |
20869 | /* Fortran explicitly imports any global symbols to the local | |
20870 | scope by DW_TAG_common_block. */ | |
20871 | if (cu->language == language_fortran && die->parent | |
20872 | && die->parent->tag == DW_TAG_common_block) | |
20873 | { | |
20874 | /* SYMBOL_CLASS doesn't matter here because | |
20875 | read_common_block is going to reset it. */ | |
20876 | if (!suppress_add) | |
20877 | list_to_add = cu->list_in_scope; | |
20878 | } | |
20879 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
20880 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 20881 | { |
0fe7935b DJ |
20882 | /* A variable with DW_AT_external is never static, but it |
20883 | may be block-scoped. */ | |
804d2729 | 20884 | list_to_add |
c24bdb02 KS |
20885 | = ((cu->list_in_scope |
20886 | == cu->get_builder ()->get_file_symbols ()) | |
20887 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 20888 | : cu->list_in_scope); |
0fe7935b | 20889 | |
f1e6e072 | 20890 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 20891 | } |
442ddf59 JK |
20892 | else if (!die_is_declaration (die, cu)) |
20893 | { | |
20894 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
20895 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
20896 | if (!suppress_add) |
20897 | list_to_add = cu->list_in_scope; | |
442ddf59 | 20898 | } |
c906108c SS |
20899 | } |
20900 | break; | |
20901 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
20902 | { |
20903 | /* If we are inside a function, mark this as an argument. If | |
20904 | not, we might be looking at an argument to an inlined function | |
20905 | when we do not have enough information to show inlined frames; | |
20906 | pretend it's a local variable in that case so that the user can | |
20907 | still see it. */ | |
804d2729 | 20908 | struct context_stack *curr |
c24bdb02 | 20909 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
20910 | if (curr != nullptr && curr->name != nullptr) |
20911 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
20912 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
435d3d88 | 20913 | if (attr != nullptr) |
a60f3166 TT |
20914 | { |
20915 | var_decode_location (attr, sym, cu); | |
20916 | } | |
20917 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
435d3d88 | 20918 | if (attr != nullptr) |
a60f3166 TT |
20919 | { |
20920 | dwarf2_const_value (attr, sym, cu); | |
20921 | } | |
f346a30d | 20922 | |
a60f3166 TT |
20923 | list_to_add = cu->list_in_scope; |
20924 | } | |
c906108c SS |
20925 | break; |
20926 | case DW_TAG_unspecified_parameters: | |
20927 | /* From varargs functions; gdb doesn't seem to have any | |
20928 | interest in this information, so just ignore it for now. | |
20929 | (FIXME?) */ | |
20930 | break; | |
34eaf542 TT |
20931 | case DW_TAG_template_type_param: |
20932 | suppress_add = 1; | |
20933 | /* Fall through. */ | |
c906108c | 20934 | case DW_TAG_class_type: |
680b30c7 | 20935 | case DW_TAG_interface_type: |
c906108c SS |
20936 | case DW_TAG_structure_type: |
20937 | case DW_TAG_union_type: | |
72019c9c | 20938 | case DW_TAG_set_type: |
c906108c | 20939 | case DW_TAG_enumeration_type: |
f1e6e072 | 20940 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 20941 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 20942 | |
63d06c5c | 20943 | { |
9c37b5ae | 20944 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
20945 | really ever be static objects: otherwise, if you try |
20946 | to, say, break of a class's method and you're in a file | |
20947 | which doesn't mention that class, it won't work unless | |
20948 | the check for all static symbols in lookup_symbol_aux | |
20949 | saves you. See the OtherFileClass tests in | |
20950 | gdb.c++/namespace.exp. */ | |
20951 | ||
e37fd15a | 20952 | if (!suppress_add) |
34eaf542 | 20953 | { |
c24bdb02 | 20954 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 20955 | list_to_add |
c24bdb02 | 20956 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 20957 | && cu->language == language_cplus |
c24bdb02 | 20958 | ? builder->get_global_symbols () |
804d2729 | 20959 | : cu->list_in_scope); |
63d06c5c | 20960 | |
64382290 | 20961 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 20962 | ... }" also defines a typedef for "foo". */ |
64382290 | 20963 | if (cu->language == language_cplus |
45280282 | 20964 | || cu->language == language_ada |
c44af4eb TT |
20965 | || cu->language == language_d |
20966 | || cu->language == language_rust) | |
64382290 TT |
20967 | { |
20968 | /* The symbol's name is already allocated along | |
20969 | with this objfile, so we don't need to | |
20970 | duplicate it for the type. */ | |
7d93a1e0 | 20971 | if (SYMBOL_TYPE (sym)->name () == 0) |
d0e39ea2 | 20972 | SYMBOL_TYPE (sym)->set_name (sym->search_name ()); |
64382290 | 20973 | } |
63d06c5c DC |
20974 | } |
20975 | } | |
c906108c SS |
20976 | break; |
20977 | case DW_TAG_typedef: | |
f1e6e072 | 20978 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 20979 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 20980 | list_to_add = cu->list_in_scope; |
63d06c5c | 20981 | break; |
c906108c | 20982 | case DW_TAG_base_type: |
a02abb62 | 20983 | case DW_TAG_subrange_type: |
f1e6e072 | 20984 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 20985 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 20986 | list_to_add = cu->list_in_scope; |
c906108c SS |
20987 | break; |
20988 | case DW_TAG_enumerator: | |
e142c38c | 20989 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
435d3d88 | 20990 | if (attr != nullptr) |
c906108c | 20991 | { |
e7c27a73 | 20992 | dwarf2_const_value (attr, sym, cu); |
c906108c | 20993 | } |
63d06c5c DC |
20994 | { |
20995 | /* NOTE: carlton/2003-11-10: See comment above in the | |
20996 | DW_TAG_class_type, etc. block. */ | |
20997 | ||
804d2729 | 20998 | list_to_add |
c24bdb02 | 20999 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 21000 | && cu->language == language_cplus |
c24bdb02 | 21001 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 21002 | : cu->list_in_scope); |
63d06c5c | 21003 | } |
c906108c | 21004 | break; |
74921315 | 21005 | case DW_TAG_imported_declaration: |
5c4e30ca | 21006 | case DW_TAG_namespace: |
f1e6e072 | 21007 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 21008 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 21009 | break; |
530e8392 KB |
21010 | case DW_TAG_module: |
21011 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
21012 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 21013 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 21014 | break; |
4357ac6c | 21015 | case DW_TAG_common_block: |
f1e6e072 | 21016 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 21017 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 21018 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 21019 | break; |
c906108c SS |
21020 | default: |
21021 | /* Not a tag we recognize. Hopefully we aren't processing | |
21022 | trash data, but since we must specifically ignore things | |
21023 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 21024 | this point. */ |
b98664d3 | 21025 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 21026 | dwarf_tag_name (die->tag)); |
c906108c SS |
21027 | break; |
21028 | } | |
df8a16a1 | 21029 | |
e37fd15a SW |
21030 | if (suppress_add) |
21031 | { | |
21032 | sym->hash_next = objfile->template_symbols; | |
21033 | objfile->template_symbols = sym; | |
21034 | list_to_add = NULL; | |
21035 | } | |
21036 | ||
21037 | if (list_to_add != NULL) | |
d3cb6808 | 21038 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 21039 | |
df8a16a1 DJ |
21040 | /* For the benefit of old versions of GCC, check for anonymous |
21041 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 21042 | if (!cu->processing_has_namespace_info |
94af9270 | 21043 | && cu->language == language_cplus) |
c24bdb02 | 21044 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
21045 | } |
21046 | return (sym); | |
21047 | } | |
21048 | ||
98bfdba5 PA |
21049 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
21050 | zero-extend it as appropriate for the symbol's type. The DWARF | |
21051 | standard (v4) is not entirely clear about the meaning of using | |
21052 | DW_FORM_dataN for a constant with a signed type, where the type is | |
21053 | wider than the data. The conclusion of a discussion on the DWARF | |
21054 | list was that this is unspecified. We choose to always zero-extend | |
21055 | because that is the interpretation long in use by GCC. */ | |
c906108c | 21056 | |
98bfdba5 | 21057 | static gdb_byte * |
ff39bb5e | 21058 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 21059 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 21060 | { |
5e22e966 | 21061 | struct objfile *objfile = cu->per_objfile->objfile; |
e17a4113 UW |
21062 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
21063 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
21064 | LONGEST l = DW_UNSND (attr); |
21065 | ||
21066 | if (bits < sizeof (*value) * 8) | |
21067 | { | |
21068 | l &= ((LONGEST) 1 << bits) - 1; | |
21069 | *value = l; | |
21070 | } | |
21071 | else if (bits == sizeof (*value) * 8) | |
21072 | *value = l; | |
21073 | else | |
21074 | { | |
224c3ddb | 21075 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
21076 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
21077 | return bytes; | |
21078 | } | |
21079 | ||
21080 | return NULL; | |
21081 | } | |
21082 | ||
21083 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
21084 | the value does not fit in *VALUE, set *BYTES - either already | |
21085 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
21086 | or, set *BATON, if we translated the constant to a location | |
21087 | expression. */ | |
21088 | ||
21089 | static void | |
ff39bb5e | 21090 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
21091 | const char *name, struct obstack *obstack, |
21092 | struct dwarf2_cu *cu, | |
d521ce57 | 21093 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
21094 | struct dwarf2_locexpr_baton **baton) |
21095 | { | |
5e22e966 | 21096 | dwarf2_per_objfile *per_objfile = cu->per_objfile; |
a50264ba | 21097 | struct objfile *objfile = per_objfile->objfile; |
98bfdba5 | 21098 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 21099 | struct dwarf_block *blk; |
98bfdba5 PA |
21100 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
21101 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
21102 | ||
21103 | *value = 0; | |
21104 | *bytes = NULL; | |
21105 | *baton = NULL; | |
c906108c SS |
21106 | |
21107 | switch (attr->form) | |
21108 | { | |
21109 | case DW_FORM_addr: | |
336d760d | 21110 | case DW_FORM_addrx: |
3019eac3 | 21111 | case DW_FORM_GNU_addr_index: |
ac56253d | 21112 | { |
ac56253d TT |
21113 | gdb_byte *data; |
21114 | ||
98bfdba5 PA |
21115 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
21116 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 21117 | cu_header->addr_size, |
98bfdba5 | 21118 | TYPE_LENGTH (type)); |
ac56253d TT |
21119 | /* Symbols of this form are reasonably rare, so we just |
21120 | piggyback on the existing location code rather than writing | |
21121 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 21122 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
a50264ba | 21123 | (*baton)->per_objfile = per_objfile; |
98bfdba5 PA |
21124 | (*baton)->per_cu = cu->per_cu; |
21125 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 21126 | |
98bfdba5 | 21127 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 21128 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 21129 | (*baton)->data = data; |
ac56253d TT |
21130 | |
21131 | data[0] = DW_OP_addr; | |
21132 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
21133 | byte_order, DW_ADDR (attr)); | |
21134 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 21135 | } |
c906108c | 21136 | break; |
4ac36638 | 21137 | case DW_FORM_string: |
93b5768b | 21138 | case DW_FORM_strp: |
cf532bd1 | 21139 | case DW_FORM_strx: |
3019eac3 | 21140 | case DW_FORM_GNU_str_index: |
36586728 | 21141 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
21142 | /* DW_STRING is already allocated on the objfile obstack, point |
21143 | directly to it. */ | |
d521ce57 | 21144 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 21145 | break; |
c906108c SS |
21146 | case DW_FORM_block1: |
21147 | case DW_FORM_block2: | |
21148 | case DW_FORM_block4: | |
21149 | case DW_FORM_block: | |
2dc7f7b3 | 21150 | case DW_FORM_exprloc: |
0224619f | 21151 | case DW_FORM_data16: |
c906108c | 21152 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
21153 | if (TYPE_LENGTH (type) != blk->size) |
21154 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
21155 | TYPE_LENGTH (type)); | |
21156 | *bytes = blk->data; | |
c906108c | 21157 | break; |
2df3850c JM |
21158 | |
21159 | /* The DW_AT_const_value attributes are supposed to carry the | |
21160 | symbol's value "represented as it would be on the target | |
21161 | architecture." By the time we get here, it's already been | |
21162 | converted to host endianness, so we just need to sign- or | |
21163 | zero-extend it as appropriate. */ | |
21164 | case DW_FORM_data1: | |
3aef2284 | 21165 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 21166 | break; |
c906108c | 21167 | case DW_FORM_data2: |
3aef2284 | 21168 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 21169 | break; |
c906108c | 21170 | case DW_FORM_data4: |
3aef2284 | 21171 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 21172 | break; |
c906108c | 21173 | case DW_FORM_data8: |
3aef2284 | 21174 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
21175 | break; |
21176 | ||
c906108c | 21177 | case DW_FORM_sdata: |
663c44ac | 21178 | case DW_FORM_implicit_const: |
98bfdba5 | 21179 | *value = DW_SND (attr); |
2df3850c JM |
21180 | break; |
21181 | ||
c906108c | 21182 | case DW_FORM_udata: |
98bfdba5 | 21183 | *value = DW_UNSND (attr); |
c906108c | 21184 | break; |
2df3850c | 21185 | |
c906108c | 21186 | default: |
b98664d3 | 21187 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 21188 | dwarf_form_name (attr->form)); |
98bfdba5 | 21189 | *value = 0; |
c906108c SS |
21190 | break; |
21191 | } | |
21192 | } | |
21193 | ||
2df3850c | 21194 | |
98bfdba5 PA |
21195 | /* Copy constant value from an attribute to a symbol. */ |
21196 | ||
2df3850c | 21197 | static void |
ff39bb5e | 21198 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 21199 | struct dwarf2_cu *cu) |
2df3850c | 21200 | { |
5e22e966 | 21201 | struct objfile *objfile = cu->per_objfile->objfile; |
12df843f | 21202 | LONGEST value; |
d521ce57 | 21203 | const gdb_byte *bytes; |
98bfdba5 | 21204 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 21205 | |
98bfdba5 | 21206 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
987012b8 | 21207 | sym->print_name (), |
98bfdba5 PA |
21208 | &objfile->objfile_obstack, cu, |
21209 | &value, &bytes, &baton); | |
2df3850c | 21210 | |
98bfdba5 PA |
21211 | if (baton != NULL) |
21212 | { | |
98bfdba5 | 21213 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 21214 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
21215 | } |
21216 | else if (bytes != NULL) | |
21217 | { | |
21218 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 21219 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
21220 | } |
21221 | else | |
21222 | { | |
21223 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 21224 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 21225 | } |
2df3850c JM |
21226 | } |
21227 | ||
c906108c SS |
21228 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
21229 | ||
21230 | static struct type * | |
e7c27a73 | 21231 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21232 | { |
c906108c | 21233 | struct attribute *type_attr; |
c906108c | 21234 | |
e142c38c | 21235 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
21236 | if (!type_attr) |
21237 | { | |
5e22e966 | 21238 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 21239 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 21240 | return objfile_type (objfile)->builtin_void; |
c906108c | 21241 | } |
348e048f | 21242 | |
673bfd45 | 21243 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21244 | } |
21245 | ||
b4ba55a1 JB |
21246 | /* True iff CU's producer generates GNAT Ada auxiliary information |
21247 | that allows to find parallel types through that information instead | |
21248 | of having to do expensive parallel lookups by type name. */ | |
21249 | ||
21250 | static int | |
21251 | need_gnat_info (struct dwarf2_cu *cu) | |
21252 | { | |
de4cb04a JB |
21253 | /* Assume that the Ada compiler was GNAT, which always produces |
21254 | the auxiliary information. */ | |
21255 | return (cu->language == language_ada); | |
b4ba55a1 JB |
21256 | } |
21257 | ||
b4ba55a1 JB |
21258 | /* Return the auxiliary type of the die in question using its |
21259 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
21260 | attribute is not present. */ | |
21261 | ||
21262 | static struct type * | |
21263 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
21264 | { | |
b4ba55a1 | 21265 | struct attribute *type_attr; |
b4ba55a1 JB |
21266 | |
21267 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
21268 | if (!type_attr) | |
21269 | return NULL; | |
21270 | ||
673bfd45 | 21271 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
21272 | } |
21273 | ||
21274 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
21275 | descriptive type accordingly. */ | |
21276 | ||
21277 | static void | |
21278 | set_descriptive_type (struct type *type, struct die_info *die, | |
21279 | struct dwarf2_cu *cu) | |
21280 | { | |
21281 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
21282 | ||
21283 | if (descriptive_type) | |
21284 | { | |
21285 | ALLOCATE_GNAT_AUX_TYPE (type); | |
21286 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
21287 | } | |
21288 | } | |
21289 | ||
c906108c SS |
21290 | /* Return the containing type of the die in question using its |
21291 | DW_AT_containing_type attribute. */ | |
21292 | ||
21293 | static struct type * | |
e7c27a73 | 21294 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21295 | { |
c906108c | 21296 | struct attribute *type_attr; |
5e22e966 | 21297 | struct objfile *objfile = cu->per_objfile->objfile; |
c906108c | 21298 | |
e142c38c | 21299 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
21300 | if (!type_attr) |
21301 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 21302 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 21303 | |
673bfd45 | 21304 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21305 | } |
21306 | ||
ac9ec31b DE |
21307 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
21308 | ||
21309 | static struct type * | |
21310 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
21311 | { | |
5e22e966 | 21312 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ac9ec31b | 21313 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
528e1572 | 21314 | char *saved; |
ac9ec31b | 21315 | |
528e1572 SM |
21316 | std::string message |
21317 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
21318 | objfile_name (objfile), | |
21319 | sect_offset_str (cu->header.sect_off), | |
21320 | sect_offset_str (die->sect_off)); | |
efba19b0 | 21321 | saved = obstack_strdup (&objfile->objfile_obstack, message); |
ac9ec31b | 21322 | |
19f392bc | 21323 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
21324 | } |
21325 | ||
673bfd45 | 21326 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
21327 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
21328 | DW_AT_containing_type. | |
673bfd45 DE |
21329 | If there is no type substitute an error marker. */ |
21330 | ||
c906108c | 21331 | static struct type * |
ff39bb5e | 21332 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 21333 | struct dwarf2_cu *cu) |
c906108c | 21334 | { |
5e22e966 | 21335 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 21336 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
f792889a DJ |
21337 | struct type *this_type; |
21338 | ||
ac9ec31b DE |
21339 | gdb_assert (attr->name == DW_AT_type |
21340 | || attr->name == DW_AT_GNAT_descriptive_type | |
21341 | || attr->name == DW_AT_containing_type); | |
21342 | ||
673bfd45 DE |
21343 | /* First see if we have it cached. */ |
21344 | ||
36586728 TT |
21345 | if (attr->form == DW_FORM_GNU_ref_alt) |
21346 | { | |
21347 | struct dwarf2_per_cu_data *per_cu; | |
0826b30a | 21348 | sect_offset sect_off = attr->get_ref_die_offset (); |
36586728 | 21349 | |
ed2dc618 SM |
21350 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, |
21351 | dwarf2_per_objfile); | |
9c541725 | 21352 | this_type = get_die_type_at_offset (sect_off, per_cu); |
36586728 | 21353 | } |
cd6c91b4 | 21354 | else if (attr->form_is_ref ()) |
673bfd45 | 21355 | { |
0826b30a | 21356 | sect_offset sect_off = attr->get_ref_die_offset (); |
673bfd45 | 21357 | |
9c541725 | 21358 | this_type = get_die_type_at_offset (sect_off, cu->per_cu); |
673bfd45 | 21359 | } |
55f1336d | 21360 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 21361 | { |
ac9ec31b | 21362 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 21363 | |
ac9ec31b | 21364 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
21365 | } |
21366 | else | |
21367 | { | |
b98664d3 | 21368 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
21369 | " at %s [in module %s]"), |
21370 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 21371 | objfile_name (objfile)); |
ac9ec31b | 21372 | return build_error_marker_type (cu, die); |
673bfd45 DE |
21373 | } |
21374 | ||
21375 | /* If not cached we need to read it in. */ | |
21376 | ||
21377 | if (this_type == NULL) | |
21378 | { | |
ac9ec31b | 21379 | struct die_info *type_die = NULL; |
673bfd45 DE |
21380 | struct dwarf2_cu *type_cu = cu; |
21381 | ||
cd6c91b4 | 21382 | if (attr->form_is_ref ()) |
ac9ec31b DE |
21383 | type_die = follow_die_ref (die, attr, &type_cu); |
21384 | if (type_die == NULL) | |
21385 | return build_error_marker_type (cu, die); | |
21386 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
21387 | from an inter-CU reference and the type's CU got expanded before |
21388 | ours. */ | |
ac9ec31b | 21389 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
21390 | } |
21391 | ||
21392 | /* If we still don't have a type use an error marker. */ | |
21393 | ||
21394 | if (this_type == NULL) | |
ac9ec31b | 21395 | return build_error_marker_type (cu, die); |
673bfd45 | 21396 | |
f792889a | 21397 | return this_type; |
c906108c SS |
21398 | } |
21399 | ||
673bfd45 DE |
21400 | /* Return the type in DIE, CU. |
21401 | Returns NULL for invalid types. | |
21402 | ||
02142a6c | 21403 | This first does a lookup in die_type_hash, |
673bfd45 DE |
21404 | and only reads the die in if necessary. |
21405 | ||
21406 | NOTE: This can be called when reading in partial or full symbols. */ | |
21407 | ||
f792889a | 21408 | static struct type * |
e7c27a73 | 21409 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21410 | { |
f792889a DJ |
21411 | struct type *this_type; |
21412 | ||
21413 | this_type = get_die_type (die, cu); | |
21414 | if (this_type) | |
21415 | return this_type; | |
21416 | ||
673bfd45 DE |
21417 | return read_type_die_1 (die, cu); |
21418 | } | |
21419 | ||
21420 | /* Read the type in DIE, CU. | |
21421 | Returns NULL for invalid types. */ | |
21422 | ||
21423 | static struct type * | |
21424 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
21425 | { | |
21426 | struct type *this_type = NULL; | |
21427 | ||
c906108c SS |
21428 | switch (die->tag) |
21429 | { | |
21430 | case DW_TAG_class_type: | |
680b30c7 | 21431 | case DW_TAG_interface_type: |
c906108c SS |
21432 | case DW_TAG_structure_type: |
21433 | case DW_TAG_union_type: | |
f792889a | 21434 | this_type = read_structure_type (die, cu); |
c906108c SS |
21435 | break; |
21436 | case DW_TAG_enumeration_type: | |
f792889a | 21437 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
21438 | break; |
21439 | case DW_TAG_subprogram: | |
21440 | case DW_TAG_subroutine_type: | |
edb3359d | 21441 | case DW_TAG_inlined_subroutine: |
f792889a | 21442 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
21443 | break; |
21444 | case DW_TAG_array_type: | |
f792889a | 21445 | this_type = read_array_type (die, cu); |
c906108c | 21446 | break; |
72019c9c | 21447 | case DW_TAG_set_type: |
f792889a | 21448 | this_type = read_set_type (die, cu); |
72019c9c | 21449 | break; |
c906108c | 21450 | case DW_TAG_pointer_type: |
f792889a | 21451 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
21452 | break; |
21453 | case DW_TAG_ptr_to_member_type: | |
f792889a | 21454 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
21455 | break; |
21456 | case DW_TAG_reference_type: | |
4297a3f0 AV |
21457 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
21458 | break; | |
21459 | case DW_TAG_rvalue_reference_type: | |
21460 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
21461 | break; |
21462 | case DW_TAG_const_type: | |
f792889a | 21463 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
21464 | break; |
21465 | case DW_TAG_volatile_type: | |
f792889a | 21466 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 21467 | break; |
06d66ee9 TT |
21468 | case DW_TAG_restrict_type: |
21469 | this_type = read_tag_restrict_type (die, cu); | |
21470 | break; | |
c906108c | 21471 | case DW_TAG_string_type: |
f792889a | 21472 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
21473 | break; |
21474 | case DW_TAG_typedef: | |
f792889a | 21475 | this_type = read_typedef (die, cu); |
c906108c | 21476 | break; |
a02abb62 | 21477 | case DW_TAG_subrange_type: |
f792889a | 21478 | this_type = read_subrange_type (die, cu); |
a02abb62 | 21479 | break; |
c906108c | 21480 | case DW_TAG_base_type: |
f792889a | 21481 | this_type = read_base_type (die, cu); |
c906108c | 21482 | break; |
81a17f79 | 21483 | case DW_TAG_unspecified_type: |
f792889a | 21484 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 21485 | break; |
0114d602 DJ |
21486 | case DW_TAG_namespace: |
21487 | this_type = read_namespace_type (die, cu); | |
21488 | break; | |
f55ee35c JK |
21489 | case DW_TAG_module: |
21490 | this_type = read_module_type (die, cu); | |
21491 | break; | |
a2c2acaf MW |
21492 | case DW_TAG_atomic_type: |
21493 | this_type = read_tag_atomic_type (die, cu); | |
21494 | break; | |
c906108c | 21495 | default: |
b98664d3 | 21496 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 21497 | dwarf_tag_name (die->tag)); |
c906108c SS |
21498 | break; |
21499 | } | |
63d06c5c | 21500 | |
f792889a | 21501 | return this_type; |
63d06c5c DC |
21502 | } |
21503 | ||
abc72ce4 DE |
21504 | /* See if we can figure out if the class lives in a namespace. We do |
21505 | this by looking for a member function; its demangled name will | |
21506 | contain namespace info, if there is any. | |
21507 | Return the computed name or NULL. | |
21508 | Space for the result is allocated on the objfile's obstack. | |
21509 | This is the full-die version of guess_partial_die_structure_name. | |
21510 | In this case we know DIE has no useful parent. */ | |
21511 | ||
43816ebc | 21512 | static const char * |
abc72ce4 DE |
21513 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) |
21514 | { | |
21515 | struct die_info *spec_die; | |
21516 | struct dwarf2_cu *spec_cu; | |
21517 | struct die_info *child; | |
5e22e966 | 21518 | struct objfile *objfile = cu->per_objfile->objfile; |
abc72ce4 DE |
21519 | |
21520 | spec_cu = cu; | |
21521 | spec_die = die_specification (die, &spec_cu); | |
21522 | if (spec_die != NULL) | |
21523 | { | |
21524 | die = spec_die; | |
21525 | cu = spec_cu; | |
21526 | } | |
21527 | ||
21528 | for (child = die->child; | |
21529 | child != NULL; | |
21530 | child = child->sibling) | |
21531 | { | |
21532 | if (child->tag == DW_TAG_subprogram) | |
21533 | { | |
73b9be8b | 21534 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 21535 | |
7d45c7c3 | 21536 | if (linkage_name != NULL) |
abc72ce4 | 21537 | { |
43816ebc TT |
21538 | gdb::unique_xmalloc_ptr<char> actual_name |
21539 | (language_class_name_from_physname (cu->language_defn, | |
21540 | linkage_name)); | |
21541 | const char *name = NULL; | |
abc72ce4 DE |
21542 | |
21543 | if (actual_name != NULL) | |
21544 | { | |
15d034d0 | 21545 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
21546 | |
21547 | if (die_name != NULL | |
43816ebc | 21548 | && strcmp (die_name, actual_name.get ()) != 0) |
abc72ce4 DE |
21549 | { |
21550 | /* Strip off the class name from the full name. | |
21551 | We want the prefix. */ | |
21552 | int die_name_len = strlen (die_name); | |
43816ebc TT |
21553 | int actual_name_len = strlen (actual_name.get ()); |
21554 | const char *ptr = actual_name.get (); | |
abc72ce4 DE |
21555 | |
21556 | /* Test for '::' as a sanity check. */ | |
21557 | if (actual_name_len > die_name_len + 2 | |
43816ebc | 21558 | && ptr[actual_name_len - die_name_len - 1] == ':') |
0cf9feb9 | 21559 | name = obstack_strndup ( |
e3b94546 | 21560 | &objfile->per_bfd->storage_obstack, |
43816ebc | 21561 | ptr, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
21562 | } |
21563 | } | |
abc72ce4 DE |
21564 | return name; |
21565 | } | |
21566 | } | |
21567 | } | |
21568 | ||
21569 | return NULL; | |
21570 | } | |
21571 | ||
96408a79 SA |
21572 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
21573 | prefix part in such case. See | |
21574 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
21575 | ||
a121b7c1 | 21576 | static const char * |
96408a79 SA |
21577 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
21578 | { | |
21579 | struct attribute *attr; | |
e6a959d6 | 21580 | const char *base; |
96408a79 SA |
21581 | |
21582 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
21583 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
21584 | return NULL; | |
21585 | ||
7d45c7c3 | 21586 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
21587 | return NULL; |
21588 | ||
73b9be8b | 21589 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
21590 | if (attr == NULL || DW_STRING (attr) == NULL) |
21591 | return NULL; | |
21592 | ||
21593 | /* dwarf2_name had to be already called. */ | |
21594 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
21595 | ||
21596 | /* Strip the base name, keep any leading namespaces/classes. */ | |
21597 | base = strrchr (DW_STRING (attr), ':'); | |
21598 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
21599 | return ""; | |
21600 | ||
5e22e966 | 21601 | struct objfile *objfile = cu->per_objfile->objfile; |
0cf9feb9 TT |
21602 | return obstack_strndup (&objfile->per_bfd->storage_obstack, |
21603 | DW_STRING (attr), | |
21604 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
21605 | } |
21606 | ||
fdde2d81 | 21607 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 21608 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 21609 | |
0114d602 DJ |
21610 | For example, if we're within the method foo() in the following |
21611 | code: | |
21612 | ||
21613 | namespace N { | |
21614 | class C { | |
21615 | void foo () { | |
21616 | } | |
21617 | }; | |
21618 | } | |
21619 | ||
21620 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 21621 | |
0d5cff50 | 21622 | static const char * |
e142c38c | 21623 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 21624 | { |
5e22e966 | 21625 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
0114d602 DJ |
21626 | struct die_info *parent, *spec_die; |
21627 | struct dwarf2_cu *spec_cu; | |
21628 | struct type *parent_type; | |
a121b7c1 | 21629 | const char *retval; |
63d06c5c | 21630 | |
9c37b5ae | 21631 | if (cu->language != language_cplus |
c44af4eb TT |
21632 | && cu->language != language_fortran && cu->language != language_d |
21633 | && cu->language != language_rust) | |
0114d602 DJ |
21634 | return ""; |
21635 | ||
96408a79 SA |
21636 | retval = anonymous_struct_prefix (die, cu); |
21637 | if (retval) | |
21638 | return retval; | |
21639 | ||
0114d602 DJ |
21640 | /* We have to be careful in the presence of DW_AT_specification. |
21641 | For example, with GCC 3.4, given the code | |
21642 | ||
21643 | namespace N { | |
21644 | void foo() { | |
21645 | // Definition of N::foo. | |
21646 | } | |
21647 | } | |
21648 | ||
21649 | then we'll have a tree of DIEs like this: | |
21650 | ||
21651 | 1: DW_TAG_compile_unit | |
21652 | 2: DW_TAG_namespace // N | |
21653 | 3: DW_TAG_subprogram // declaration of N::foo | |
21654 | 4: DW_TAG_subprogram // definition of N::foo | |
21655 | DW_AT_specification // refers to die #3 | |
21656 | ||
21657 | Thus, when processing die #4, we have to pretend that we're in | |
21658 | the context of its DW_AT_specification, namely the contex of die | |
21659 | #3. */ | |
21660 | spec_cu = cu; | |
21661 | spec_die = die_specification (die, &spec_cu); | |
21662 | if (spec_die == NULL) | |
21663 | parent = die->parent; | |
21664 | else | |
63d06c5c | 21665 | { |
0114d602 DJ |
21666 | parent = spec_die->parent; |
21667 | cu = spec_cu; | |
63d06c5c | 21668 | } |
0114d602 DJ |
21669 | |
21670 | if (parent == NULL) | |
21671 | return ""; | |
98bfdba5 PA |
21672 | else if (parent->building_fullname) |
21673 | { | |
21674 | const char *name; | |
21675 | const char *parent_name; | |
21676 | ||
21677 | /* It has been seen on RealView 2.2 built binaries, | |
21678 | DW_TAG_template_type_param types actually _defined_ as | |
21679 | children of the parent class: | |
21680 | ||
21681 | enum E {}; | |
21682 | template class <class Enum> Class{}; | |
21683 | Class<enum E> class_e; | |
21684 | ||
21685 | 1: DW_TAG_class_type (Class) | |
21686 | 2: DW_TAG_enumeration_type (E) | |
21687 | 3: DW_TAG_enumerator (enum1:0) | |
21688 | 3: DW_TAG_enumerator (enum2:1) | |
21689 | ... | |
21690 | 2: DW_TAG_template_type_param | |
21691 | DW_AT_type DW_FORM_ref_udata (E) | |
21692 | ||
21693 | Besides being broken debug info, it can put GDB into an | |
21694 | infinite loop. Consider: | |
21695 | ||
21696 | When we're building the full name for Class<E>, we'll start | |
21697 | at Class, and go look over its template type parameters, | |
21698 | finding E. We'll then try to build the full name of E, and | |
21699 | reach here. We're now trying to build the full name of E, | |
21700 | and look over the parent DIE for containing scope. In the | |
21701 | broken case, if we followed the parent DIE of E, we'd again | |
21702 | find Class, and once again go look at its template type | |
21703 | arguments, etc., etc. Simply don't consider such parent die | |
21704 | as source-level parent of this die (it can't be, the language | |
21705 | doesn't allow it), and break the loop here. */ | |
21706 | name = dwarf2_name (die, cu); | |
21707 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 21708 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
21709 | name ? name : "<unknown>", |
21710 | parent_name ? parent_name : "<unknown>"); | |
21711 | return ""; | |
21712 | } | |
63d06c5c | 21713 | else |
0114d602 DJ |
21714 | switch (parent->tag) |
21715 | { | |
63d06c5c | 21716 | case DW_TAG_namespace: |
0114d602 | 21717 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
21718 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
21719 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
21720 | Work around this problem here. */ | |
21721 | if (cu->language == language_cplus | |
7d93a1e0 | 21722 | && strcmp (parent_type->name (), "::") == 0) |
acebe513 | 21723 | return ""; |
0114d602 | 21724 | /* We give a name to even anonymous namespaces. */ |
7d93a1e0 | 21725 | return parent_type->name (); |
63d06c5c | 21726 | case DW_TAG_class_type: |
680b30c7 | 21727 | case DW_TAG_interface_type: |
63d06c5c | 21728 | case DW_TAG_structure_type: |
0114d602 | 21729 | case DW_TAG_union_type: |
f55ee35c | 21730 | case DW_TAG_module: |
0114d602 | 21731 | parent_type = read_type_die (parent, cu); |
7d93a1e0 SM |
21732 | if (parent_type->name () != NULL) |
21733 | return parent_type->name (); | |
0114d602 DJ |
21734 | else |
21735 | /* An anonymous structure is only allowed non-static data | |
21736 | members; no typedefs, no member functions, et cetera. | |
21737 | So it does not need a prefix. */ | |
21738 | return ""; | |
abc72ce4 | 21739 | case DW_TAG_compile_unit: |
95554aad | 21740 | case DW_TAG_partial_unit: |
abc72ce4 DE |
21741 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
21742 | if (cu->language == language_cplus | |
5989a64e | 21743 | && !dwarf2_per_objfile->per_bfd->types.empty () |
abc72ce4 DE |
21744 | && die->child != NULL |
21745 | && (die->tag == DW_TAG_class_type | |
21746 | || die->tag == DW_TAG_structure_type | |
21747 | || die->tag == DW_TAG_union_type)) | |
21748 | { | |
43816ebc | 21749 | const char *name = guess_full_die_structure_name (die, cu); |
abc72ce4 DE |
21750 | if (name != NULL) |
21751 | return name; | |
21752 | } | |
21753 | return ""; | |
0a4b0913 AB |
21754 | case DW_TAG_subprogram: |
21755 | /* Nested subroutines in Fortran get a prefix with the name | |
21756 | of the parent's subroutine. */ | |
21757 | if (cu->language == language_fortran) | |
21758 | { | |
21759 | if ((die->tag == DW_TAG_subprogram) | |
21760 | && (dwarf2_name (parent, cu) != NULL)) | |
21761 | return dwarf2_name (parent, cu); | |
21762 | } | |
21763 | return determine_prefix (parent, cu); | |
3d567982 TT |
21764 | case DW_TAG_enumeration_type: |
21765 | parent_type = read_type_die (parent, cu); | |
21766 | if (TYPE_DECLARED_CLASS (parent_type)) | |
21767 | { | |
7d93a1e0 SM |
21768 | if (parent_type->name () != NULL) |
21769 | return parent_type->name (); | |
3d567982 TT |
21770 | return ""; |
21771 | } | |
21772 | /* Fall through. */ | |
63d06c5c | 21773 | default: |
8176b9b8 | 21774 | return determine_prefix (parent, cu); |
63d06c5c | 21775 | } |
63d06c5c DC |
21776 | } |
21777 | ||
3e43a32a MS |
21778 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
21779 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
21780 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
21781 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
21782 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 21783 | |
f55ee35c | 21784 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
21785 | |
21786 | static char * | |
f55ee35c JK |
21787 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
21788 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 21789 | { |
f55ee35c | 21790 | const char *lead = ""; |
5c315b68 | 21791 | const char *sep; |
63d06c5c | 21792 | |
3e43a32a MS |
21793 | if (suffix == NULL || suffix[0] == '\0' |
21794 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 21795 | sep = ""; |
45280282 IB |
21796 | else if (cu->language == language_d) |
21797 | { | |
21798 | /* For D, the 'main' function could be defined in any module, but it | |
21799 | should never be prefixed. */ | |
21800 | if (strcmp (suffix, "D main") == 0) | |
21801 | { | |
21802 | prefix = ""; | |
21803 | sep = ""; | |
21804 | } | |
21805 | else | |
21806 | sep = "."; | |
21807 | } | |
f55ee35c JK |
21808 | else if (cu->language == language_fortran && physname) |
21809 | { | |
21810 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
21811 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
21812 | ||
21813 | lead = "__"; | |
21814 | sep = "_MOD_"; | |
21815 | } | |
987504bb JJ |
21816 | else |
21817 | sep = "::"; | |
63d06c5c | 21818 | |
6dd47d34 DE |
21819 | if (prefix == NULL) |
21820 | prefix = ""; | |
21821 | if (suffix == NULL) | |
21822 | suffix = ""; | |
21823 | ||
987504bb JJ |
21824 | if (obs == NULL) |
21825 | { | |
3e43a32a | 21826 | char *retval |
224c3ddb SM |
21827 | = ((char *) |
21828 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 21829 | |
f55ee35c JK |
21830 | strcpy (retval, lead); |
21831 | strcat (retval, prefix); | |
6dd47d34 DE |
21832 | strcat (retval, sep); |
21833 | strcat (retval, suffix); | |
63d06c5c DC |
21834 | return retval; |
21835 | } | |
987504bb JJ |
21836 | else |
21837 | { | |
21838 | /* We have an obstack. */ | |
f55ee35c | 21839 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 21840 | } |
63d06c5c DC |
21841 | } |
21842 | ||
71c25dea TT |
21843 | /* Get name of a die, return NULL if not found. */ |
21844 | ||
15d034d0 TT |
21845 | static const char * |
21846 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
be1e3d3e | 21847 | struct objfile *objfile) |
71c25dea TT |
21848 | { |
21849 | if (name && cu->language == language_cplus) | |
21850 | { | |
596dc4ad TT |
21851 | gdb::unique_xmalloc_ptr<char> canon_name |
21852 | = cp_canonicalize_string (name); | |
71c25dea | 21853 | |
596dc4ad TT |
21854 | if (canon_name != nullptr) |
21855 | name = objfile->intern (canon_name.get ()); | |
71c25dea TT |
21856 | } |
21857 | ||
21858 | return name; | |
c906108c SS |
21859 | } |
21860 | ||
96553a0c DE |
21861 | /* Get name of a die, return NULL if not found. |
21862 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 21863 | |
15d034d0 | 21864 | static const char * |
e142c38c | 21865 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
21866 | { |
21867 | struct attribute *attr; | |
5e22e966 | 21868 | struct objfile *objfile = cu->per_objfile->objfile; |
9219021c | 21869 | |
e142c38c | 21870 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 21871 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 21872 | && die->tag != DW_TAG_namespace |
53832f31 TT |
21873 | && die->tag != DW_TAG_class_type |
21874 | && die->tag != DW_TAG_interface_type | |
21875 | && die->tag != DW_TAG_structure_type | |
21876 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
21877 | return NULL; |
21878 | ||
21879 | switch (die->tag) | |
21880 | { | |
21881 | case DW_TAG_compile_unit: | |
95554aad | 21882 | case DW_TAG_partial_unit: |
71c25dea TT |
21883 | /* Compilation units have a DW_AT_name that is a filename, not |
21884 | a source language identifier. */ | |
21885 | case DW_TAG_enumeration_type: | |
21886 | case DW_TAG_enumerator: | |
21887 | /* These tags always have simple identifiers already; no need | |
21888 | to canonicalize them. */ | |
21889 | return DW_STRING (attr); | |
907af001 | 21890 | |
96553a0c DE |
21891 | case DW_TAG_namespace: |
21892 | if (attr != NULL && DW_STRING (attr) != NULL) | |
21893 | return DW_STRING (attr); | |
21894 | return CP_ANONYMOUS_NAMESPACE_STR; | |
21895 | ||
907af001 UW |
21896 | case DW_TAG_class_type: |
21897 | case DW_TAG_interface_type: | |
21898 | case DW_TAG_structure_type: | |
21899 | case DW_TAG_union_type: | |
21900 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
21901 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
21902 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
21903 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 21904 | if (attr && DW_STRING (attr) |
61012eef GB |
21905 | && (startswith (DW_STRING (attr), "._") |
21906 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 21907 | return NULL; |
53832f31 TT |
21908 | |
21909 | /* GCC might emit a nameless typedef that has a linkage name. See | |
21910 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
21911 | if (!attr || DW_STRING (attr) == NULL) | |
21912 | { | |
73b9be8b | 21913 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
21914 | if (attr == NULL || DW_STRING (attr) == NULL) |
21915 | return NULL; | |
21916 | ||
df5c6c50 JK |
21917 | /* Avoid demangling DW_STRING (attr) the second time on a second |
21918 | call for the same DIE. */ | |
21919 | if (!DW_STRING_IS_CANONICAL (attr)) | |
53832f31 | 21920 | { |
43816ebc TT |
21921 | gdb::unique_xmalloc_ptr<char> demangled |
21922 | (gdb_demangle (DW_STRING (attr), DMGL_TYPES)); | |
4f180d53 AT |
21923 | if (demangled == nullptr) |
21924 | return nullptr; | |
43816ebc | 21925 | |
be1e3d3e | 21926 | DW_STRING (attr) = objfile->intern (demangled.get ()); |
53832f31 | 21927 | DW_STRING_IS_CANONICAL (attr) = 1; |
53832f31 | 21928 | } |
67430cd0 TT |
21929 | |
21930 | /* Strip any leading namespaces/classes, keep only the base name. | |
21931 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
21932 | const char *base = strrchr (DW_STRING (attr), ':'); | |
21933 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
21934 | return &base[1]; | |
21935 | else | |
21936 | return DW_STRING (attr); | |
53832f31 | 21937 | } |
907af001 UW |
21938 | break; |
21939 | ||
71c25dea | 21940 | default: |
907af001 UW |
21941 | break; |
21942 | } | |
21943 | ||
21944 | if (!DW_STRING_IS_CANONICAL (attr)) | |
21945 | { | |
be1e3d3e TT |
21946 | DW_STRING (attr) = dwarf2_canonicalize_name (DW_STRING (attr), cu, |
21947 | objfile); | |
907af001 | 21948 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 21949 | } |
907af001 | 21950 | return DW_STRING (attr); |
9219021c DC |
21951 | } |
21952 | ||
21953 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
21954 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
21955 | containing the return value on output. */ | |
9219021c DC |
21956 | |
21957 | static struct die_info * | |
f2f0e013 | 21958 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
21959 | { |
21960 | struct attribute *attr; | |
9219021c | 21961 | |
f2f0e013 | 21962 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
21963 | if (attr == NULL) |
21964 | return NULL; | |
21965 | ||
f2f0e013 | 21966 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
21967 | } |
21968 | ||
f9aca02d | 21969 | static void |
d97bc12b | 21970 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
21971 | { |
21972 | unsigned int i; | |
21973 | ||
d97bc12b | 21974 | print_spaces (indent, f); |
9d8780f0 | 21975 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 21976 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 21977 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
21978 | |
21979 | if (die->parent != NULL) | |
21980 | { | |
21981 | print_spaces (indent, f); | |
9d8780f0 SM |
21982 | fprintf_unfiltered (f, " parent at offset: %s\n", |
21983 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
21984 | } |
21985 | ||
21986 | print_spaces (indent, f); | |
21987 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 21988 | dwarf_bool_name (die->child != NULL)); |
c906108c | 21989 | |
d97bc12b DE |
21990 | print_spaces (indent, f); |
21991 | fprintf_unfiltered (f, " attributes:\n"); | |
21992 | ||
c906108c SS |
21993 | for (i = 0; i < die->num_attrs; ++i) |
21994 | { | |
d97bc12b DE |
21995 | print_spaces (indent, f); |
21996 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
21997 | dwarf_attr_name (die->attrs[i].name), |
21998 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 21999 | |
c906108c SS |
22000 | switch (die->attrs[i].form) |
22001 | { | |
c906108c | 22002 | case DW_FORM_addr: |
336d760d | 22003 | case DW_FORM_addrx: |
3019eac3 | 22004 | case DW_FORM_GNU_addr_index: |
d97bc12b | 22005 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 22006 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
22007 | break; |
22008 | case DW_FORM_block2: | |
22009 | case DW_FORM_block4: | |
22010 | case DW_FORM_block: | |
22011 | case DW_FORM_block1: | |
56eb65bd SP |
22012 | fprintf_unfiltered (f, "block: size %s", |
22013 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 22014 | break; |
2dc7f7b3 | 22015 | case DW_FORM_exprloc: |
56eb65bd SP |
22016 | fprintf_unfiltered (f, "expression: size %s", |
22017 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 22018 | break; |
0224619f JK |
22019 | case DW_FORM_data16: |
22020 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
22021 | break; | |
4568ecf9 DE |
22022 | case DW_FORM_ref_addr: |
22023 | fprintf_unfiltered (f, "ref address: "); | |
22024 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22025 | break; | |
36586728 TT |
22026 | case DW_FORM_GNU_ref_alt: |
22027 | fprintf_unfiltered (f, "alt ref address: "); | |
22028 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22029 | break; | |
10b3939b DJ |
22030 | case DW_FORM_ref1: |
22031 | case DW_FORM_ref2: | |
22032 | case DW_FORM_ref4: | |
4568ecf9 DE |
22033 | case DW_FORM_ref8: |
22034 | case DW_FORM_ref_udata: | |
d97bc12b | 22035 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 22036 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 22037 | break; |
c906108c SS |
22038 | case DW_FORM_data1: |
22039 | case DW_FORM_data2: | |
22040 | case DW_FORM_data4: | |
ce5d95e1 | 22041 | case DW_FORM_data8: |
c906108c SS |
22042 | case DW_FORM_udata: |
22043 | case DW_FORM_sdata: | |
43bbcdc2 PH |
22044 | fprintf_unfiltered (f, "constant: %s", |
22045 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 22046 | break; |
2dc7f7b3 TT |
22047 | case DW_FORM_sec_offset: |
22048 | fprintf_unfiltered (f, "section offset: %s", | |
22049 | pulongest (DW_UNSND (&die->attrs[i]))); | |
22050 | break; | |
55f1336d | 22051 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
22052 | fprintf_unfiltered (f, "signature: %s", |
22053 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 22054 | break; |
c906108c | 22055 | case DW_FORM_string: |
4bdf3d34 | 22056 | case DW_FORM_strp: |
43988095 | 22057 | case DW_FORM_line_strp: |
cf532bd1 | 22058 | case DW_FORM_strx: |
3019eac3 | 22059 | case DW_FORM_GNU_str_index: |
36586728 | 22060 | case DW_FORM_GNU_strp_alt: |
8285870a | 22061 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 22062 | DW_STRING (&die->attrs[i]) |
8285870a JK |
22063 | ? DW_STRING (&die->attrs[i]) : "", |
22064 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
22065 | break; |
22066 | case DW_FORM_flag: | |
22067 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 22068 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 22069 | else |
d97bc12b | 22070 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 22071 | break; |
2dc7f7b3 TT |
22072 | case DW_FORM_flag_present: |
22073 | fprintf_unfiltered (f, "flag: TRUE"); | |
22074 | break; | |
a8329558 | 22075 | case DW_FORM_indirect: |
0963b4bd MS |
22076 | /* The reader will have reduced the indirect form to |
22077 | the "base form" so this form should not occur. */ | |
5f48f8f3 | 22078 | fprintf_unfiltered (f, |
3e43a32a | 22079 | "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 22080 | break; |
663c44ac JK |
22081 | case DW_FORM_implicit_const: |
22082 | fprintf_unfiltered (f, "constant: %s", | |
22083 | plongest (DW_SND (&die->attrs[i]))); | |
22084 | break; | |
c906108c | 22085 | default: |
d97bc12b | 22086 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 22087 | die->attrs[i].form); |
d97bc12b | 22088 | break; |
c906108c | 22089 | } |
d97bc12b | 22090 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
22091 | } |
22092 | } | |
22093 | ||
f9aca02d | 22094 | static void |
d97bc12b | 22095 | dump_die_for_error (struct die_info *die) |
c906108c | 22096 | { |
d97bc12b DE |
22097 | dump_die_shallow (gdb_stderr, 0, die); |
22098 | } | |
22099 | ||
22100 | static void | |
22101 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
22102 | { | |
22103 | int indent = level * 4; | |
22104 | ||
22105 | gdb_assert (die != NULL); | |
22106 | ||
22107 | if (level >= max_level) | |
22108 | return; | |
22109 | ||
22110 | dump_die_shallow (f, indent, die); | |
22111 | ||
22112 | if (die->child != NULL) | |
c906108c | 22113 | { |
d97bc12b DE |
22114 | print_spaces (indent, f); |
22115 | fprintf_unfiltered (f, " Children:"); | |
22116 | if (level + 1 < max_level) | |
22117 | { | |
22118 | fprintf_unfiltered (f, "\n"); | |
22119 | dump_die_1 (f, level + 1, max_level, die->child); | |
22120 | } | |
22121 | else | |
22122 | { | |
3e43a32a MS |
22123 | fprintf_unfiltered (f, |
22124 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
22125 | } |
22126 | } | |
22127 | ||
22128 | if (die->sibling != NULL && level > 0) | |
22129 | { | |
22130 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
22131 | } |
22132 | } | |
22133 | ||
d97bc12b DE |
22134 | /* This is called from the pdie macro in gdbinit.in. |
22135 | It's not static so gcc will keep a copy callable from gdb. */ | |
22136 | ||
22137 | void | |
22138 | dump_die (struct die_info *die, int max_level) | |
22139 | { | |
22140 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
22141 | } | |
22142 | ||
f9aca02d | 22143 | static void |
51545339 | 22144 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22145 | { |
51545339 | 22146 | void **slot; |
c906108c | 22147 | |
9c541725 PA |
22148 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
22149 | to_underlying (die->sect_off), | |
b64f50a1 | 22150 | INSERT); |
51545339 DJ |
22151 | |
22152 | *slot = die; | |
c906108c SS |
22153 | } |
22154 | ||
348e048f DE |
22155 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
22156 | On entry *REF_CU is the CU of SRC_DIE. | |
22157 | On exit *REF_CU is the CU of the result. */ | |
22158 | ||
22159 | static struct die_info * | |
ff39bb5e | 22160 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
22161 | struct dwarf2_cu **ref_cu) |
22162 | { | |
22163 | struct die_info *die; | |
22164 | ||
cd6c91b4 | 22165 | if (attr->form_is_ref ()) |
348e048f | 22166 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 22167 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
22168 | die = follow_die_sig (src_die, attr, ref_cu); |
22169 | else | |
22170 | { | |
22171 | dump_die_for_error (src_die); | |
22172 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
5e22e966 | 22173 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
348e048f DE |
22174 | } |
22175 | ||
22176 | return die; | |
03dd20cc DJ |
22177 | } |
22178 | ||
5c631832 | 22179 | /* Follow reference OFFSET. |
673bfd45 DE |
22180 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
22181 | On exit *REF_CU is the CU of the result. | |
22182 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 22183 | |
f9aca02d | 22184 | static struct die_info * |
9c541725 | 22185 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 22186 | struct dwarf2_cu **ref_cu) |
c906108c | 22187 | { |
10b3939b | 22188 | struct die_info temp_die; |
f2f0e013 | 22189 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
5e22e966 | 22190 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
10b3939b | 22191 | |
348e048f DE |
22192 | gdb_assert (cu->per_cu != NULL); |
22193 | ||
98bfdba5 PA |
22194 | target_cu = cu; |
22195 | ||
3019eac3 | 22196 | if (cu->per_cu->is_debug_types) |
348e048f DE |
22197 | { |
22198 | /* .debug_types CUs cannot reference anything outside their CU. | |
22199 | If they need to, they have to reference a signatured type via | |
55f1336d | 22200 | DW_FORM_ref_sig8. */ |
4057dfde | 22201 | if (!cu->header.offset_in_cu_p (sect_off)) |
5c631832 | 22202 | return NULL; |
348e048f | 22203 | } |
36586728 | 22204 | else if (offset_in_dwz != cu->per_cu->is_dwz |
4057dfde | 22205 | || !cu->header.offset_in_cu_p (sect_off)) |
10b3939b DJ |
22206 | { |
22207 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 22208 | |
9c541725 | 22209 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 22210 | dwarf2_per_objfile); |
03dd20cc DJ |
22211 | |
22212 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad | 22213 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 22214 | load_full_comp_unit (per_cu, false, cu->language); |
03dd20cc | 22215 | |
10b3939b DJ |
22216 | target_cu = per_cu->cu; |
22217 | } | |
98bfdba5 PA |
22218 | else if (cu->dies == NULL) |
22219 | { | |
22220 | /* We're loading full DIEs during partial symbol reading. */ | |
5989a64e | 22221 | gdb_assert (dwarf2_per_objfile->per_bfd->reading_partial_symbols); |
58f0c718 | 22222 | load_full_comp_unit (cu->per_cu, false, language_minimal); |
98bfdba5 | 22223 | } |
c906108c | 22224 | |
f2f0e013 | 22225 | *ref_cu = target_cu; |
9c541725 | 22226 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
22227 | |
22228 | if (target_cu != cu) | |
22229 | target_cu->ancestor = cu; | |
22230 | ||
9a3c8263 | 22231 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
22232 | &temp_die, |
22233 | to_underlying (sect_off)); | |
5c631832 | 22234 | } |
10b3939b | 22235 | |
5c631832 JK |
22236 | /* Follow reference attribute ATTR of SRC_DIE. |
22237 | On entry *REF_CU is the CU of SRC_DIE. | |
22238 | On exit *REF_CU is the CU of the result. */ | |
22239 | ||
22240 | static struct die_info * | |
ff39bb5e | 22241 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
22242 | struct dwarf2_cu **ref_cu) |
22243 | { | |
0826b30a | 22244 | sect_offset sect_off = attr->get_ref_die_offset (); |
5c631832 JK |
22245 | struct dwarf2_cu *cu = *ref_cu; |
22246 | struct die_info *die; | |
22247 | ||
9c541725 | 22248 | die = follow_die_offset (sect_off, |
36586728 TT |
22249 | (attr->form == DW_FORM_GNU_ref_alt |
22250 | || cu->per_cu->is_dwz), | |
22251 | ref_cu); | |
5c631832 | 22252 | if (!die) |
9d8780f0 SM |
22253 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
22254 | "at %s [in module %s]"), | |
22255 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
5e22e966 | 22256 | objfile_name (cu->per_objfile->objfile)); |
348e048f | 22257 | |
5c631832 JK |
22258 | return die; |
22259 | } | |
22260 | ||
d4c9a4f8 | 22261 | /* See read.h. */ |
5c631832 JK |
22262 | |
22263 | struct dwarf2_locexpr_baton | |
9c541725 | 22264 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
d4c9a4f8 | 22265 | dwarf2_per_cu_data *per_cu, |
8b9737bf | 22266 | CORE_ADDR (*get_frame_pc) (void *baton), |
e4a62c65 | 22267 | void *baton, bool resolve_abstract_p) |
5c631832 | 22268 | { |
918dd910 | 22269 | struct dwarf2_cu *cu; |
5c631832 JK |
22270 | struct die_info *die; |
22271 | struct attribute *attr; | |
22272 | struct dwarf2_locexpr_baton retval; | |
12359b5e SM |
22273 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
22274 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8cf6f0b1 | 22275 | |
918dd910 | 22276 | if (per_cu->cu == NULL) |
58f0c718 | 22277 | load_cu (per_cu, false); |
918dd910 | 22278 | cu = per_cu->cu; |
cc12ce38 DE |
22279 | if (cu == NULL) |
22280 | { | |
22281 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22282 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
22283 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
22284 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 22285 | } |
918dd910 | 22286 | |
9c541725 | 22287 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 22288 | if (!die) |
9d8780f0 SM |
22289 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
22290 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
22291 | |
22292 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 | 22293 | if (!attr && resolve_abstract_p |
5989a64e SM |
22294 | && (dwarf2_per_objfile->per_bfd->abstract_to_concrete.find (die->sect_off) |
22295 | != dwarf2_per_objfile->per_bfd->abstract_to_concrete.end ())) | |
e4a62c65 TV |
22296 | { |
22297 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
b3b3bada | 22298 | CORE_ADDR baseaddr = objfile->text_section_offset (); |
08feed99 | 22299 | struct gdbarch *gdbarch = objfile->arch (); |
e4a62c65 | 22300 | |
3360b6e7 | 22301 | for (const auto &cand_off |
5989a64e | 22302 | : dwarf2_per_objfile->per_bfd->abstract_to_concrete[die->sect_off]) |
e4a62c65 | 22303 | { |
3360b6e7 TV |
22304 | struct dwarf2_cu *cand_cu = cu; |
22305 | struct die_info *cand | |
22306 | = follow_die_offset (cand_off, per_cu->is_dwz, &cand_cu); | |
22307 | if (!cand | |
22308 | || !cand->parent | |
e4a62c65 TV |
22309 | || cand->parent->tag != DW_TAG_subprogram) |
22310 | continue; | |
22311 | ||
22312 | CORE_ADDR pc_low, pc_high; | |
22313 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
eba4caf2 TV |
22314 | if (pc_low == ((CORE_ADDR) -1)) |
22315 | continue; | |
22316 | pc_low = gdbarch_adjust_dwarf2_addr (gdbarch, pc_low + baseaddr); | |
22317 | pc_high = gdbarch_adjust_dwarf2_addr (gdbarch, pc_high + baseaddr); | |
22318 | if (!(pc_low <= pc && pc < pc_high)) | |
e4a62c65 TV |
22319 | continue; |
22320 | ||
22321 | die = cand; | |
22322 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
22323 | break; | |
22324 | } | |
22325 | } | |
22326 | ||
5c631832 JK |
22327 | if (!attr) |
22328 | { | |
e103e986 JK |
22329 | /* DWARF: "If there is no such attribute, then there is no effect.". |
22330 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 22331 | |
e103e986 | 22332 | retval.data = NULL; |
5c631832 JK |
22333 | retval.size = 0; |
22334 | } | |
cd6c91b4 | 22335 | else if (attr->form_is_section_offset ()) |
8cf6f0b1 TT |
22336 | { |
22337 | struct dwarf2_loclist_baton loclist_baton; | |
22338 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
22339 | size_t size; | |
22340 | ||
22341 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
22342 | ||
22343 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
22344 | &size, pc); | |
22345 | retval.size = size; | |
22346 | } | |
5c631832 JK |
22347 | else |
22348 | { | |
4fc6c0d5 | 22349 | if (!attr->form_is_block ()) |
9d8780f0 | 22350 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 22351 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 22352 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
22353 | |
22354 | retval.data = DW_BLOCK (attr)->data; | |
22355 | retval.size = DW_BLOCK (attr)->size; | |
22356 | } | |
a50264ba | 22357 | retval.per_objfile = dwarf2_per_objfile; |
5c631832 | 22358 | retval.per_cu = cu->per_cu; |
918dd910 | 22359 | |
ed2dc618 | 22360 | age_cached_comp_units (dwarf2_per_objfile); |
918dd910 | 22361 | |
5c631832 | 22362 | return retval; |
348e048f DE |
22363 | } |
22364 | ||
d4c9a4f8 | 22365 | /* See read.h. */ |
8b9737bf TT |
22366 | |
22367 | struct dwarf2_locexpr_baton | |
22368 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
d4c9a4f8 | 22369 | dwarf2_per_cu_data *per_cu, |
8b9737bf TT |
22370 | CORE_ADDR (*get_frame_pc) (void *baton), |
22371 | void *baton) | |
22372 | { | |
9c541725 | 22373 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 22374 | |
9c541725 | 22375 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, get_frame_pc, baton); |
8b9737bf TT |
22376 | } |
22377 | ||
b6807d98 TT |
22378 | /* Write a constant of a given type as target-ordered bytes into |
22379 | OBSTACK. */ | |
22380 | ||
22381 | static const gdb_byte * | |
22382 | write_constant_as_bytes (struct obstack *obstack, | |
22383 | enum bfd_endian byte_order, | |
22384 | struct type *type, | |
22385 | ULONGEST value, | |
22386 | LONGEST *len) | |
22387 | { | |
22388 | gdb_byte *result; | |
22389 | ||
22390 | *len = TYPE_LENGTH (type); | |
224c3ddb | 22391 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
22392 | store_unsigned_integer (result, *len, byte_order, value); |
22393 | ||
22394 | return result; | |
22395 | } | |
22396 | ||
d4c9a4f8 | 22397 | /* See read.h. */ |
b6807d98 TT |
22398 | |
22399 | const gdb_byte * | |
9c541725 | 22400 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
d4c9a4f8 SM |
22401 | dwarf2_per_cu_data *per_cu, |
22402 | obstack *obstack, | |
b6807d98 TT |
22403 | LONGEST *len) |
22404 | { | |
22405 | struct dwarf2_cu *cu; | |
22406 | struct die_info *die; | |
22407 | struct attribute *attr; | |
22408 | const gdb_byte *result = NULL; | |
22409 | struct type *type; | |
22410 | LONGEST value; | |
22411 | enum bfd_endian byte_order; | |
e3b94546 | 22412 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
b6807d98 | 22413 | |
b6807d98 | 22414 | if (per_cu->cu == NULL) |
58f0c718 | 22415 | load_cu (per_cu, false); |
b6807d98 | 22416 | cu = per_cu->cu; |
cc12ce38 DE |
22417 | if (cu == NULL) |
22418 | { | |
22419 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22420 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
22421 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
22422 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 22423 | } |
b6807d98 | 22424 | |
9c541725 | 22425 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 22426 | if (!die) |
9d8780f0 SM |
22427 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
22428 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
22429 | |
22430 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
22431 | if (attr == NULL) | |
22432 | return NULL; | |
22433 | ||
e3b94546 | 22434 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
22435 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
22436 | ||
22437 | switch (attr->form) | |
22438 | { | |
22439 | case DW_FORM_addr: | |
336d760d | 22440 | case DW_FORM_addrx: |
b6807d98 TT |
22441 | case DW_FORM_GNU_addr_index: |
22442 | { | |
22443 | gdb_byte *tem; | |
22444 | ||
22445 | *len = cu->header.addr_size; | |
224c3ddb | 22446 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
22447 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
22448 | result = tem; | |
22449 | } | |
22450 | break; | |
22451 | case DW_FORM_string: | |
22452 | case DW_FORM_strp: | |
cf532bd1 | 22453 | case DW_FORM_strx: |
b6807d98 TT |
22454 | case DW_FORM_GNU_str_index: |
22455 | case DW_FORM_GNU_strp_alt: | |
22456 | /* DW_STRING is already allocated on the objfile obstack, point | |
22457 | directly to it. */ | |
22458 | result = (const gdb_byte *) DW_STRING (attr); | |
22459 | *len = strlen (DW_STRING (attr)); | |
22460 | break; | |
22461 | case DW_FORM_block1: | |
22462 | case DW_FORM_block2: | |
22463 | case DW_FORM_block4: | |
22464 | case DW_FORM_block: | |
22465 | case DW_FORM_exprloc: | |
0224619f | 22466 | case DW_FORM_data16: |
b6807d98 TT |
22467 | result = DW_BLOCK (attr)->data; |
22468 | *len = DW_BLOCK (attr)->size; | |
22469 | break; | |
22470 | ||
22471 | /* The DW_AT_const_value attributes are supposed to carry the | |
22472 | symbol's value "represented as it would be on the target | |
22473 | architecture." By the time we get here, it's already been | |
22474 | converted to host endianness, so we just need to sign- or | |
22475 | zero-extend it as appropriate. */ | |
22476 | case DW_FORM_data1: | |
22477 | type = die_type (die, cu); | |
22478 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
22479 | if (result == NULL) | |
22480 | result = write_constant_as_bytes (obstack, byte_order, | |
22481 | type, value, len); | |
22482 | break; | |
22483 | case DW_FORM_data2: | |
22484 | type = die_type (die, cu); | |
22485 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
22486 | if (result == NULL) | |
22487 | result = write_constant_as_bytes (obstack, byte_order, | |
22488 | type, value, len); | |
22489 | break; | |
22490 | case DW_FORM_data4: | |
22491 | type = die_type (die, cu); | |
22492 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
22493 | if (result == NULL) | |
22494 | result = write_constant_as_bytes (obstack, byte_order, | |
22495 | type, value, len); | |
22496 | break; | |
22497 | case DW_FORM_data8: | |
22498 | type = die_type (die, cu); | |
22499 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
22500 | if (result == NULL) | |
22501 | result = write_constant_as_bytes (obstack, byte_order, | |
22502 | type, value, len); | |
22503 | break; | |
22504 | ||
22505 | case DW_FORM_sdata: | |
663c44ac | 22506 | case DW_FORM_implicit_const: |
b6807d98 TT |
22507 | type = die_type (die, cu); |
22508 | result = write_constant_as_bytes (obstack, byte_order, | |
22509 | type, DW_SND (attr), len); | |
22510 | break; | |
22511 | ||
22512 | case DW_FORM_udata: | |
22513 | type = die_type (die, cu); | |
22514 | result = write_constant_as_bytes (obstack, byte_order, | |
22515 | type, DW_UNSND (attr), len); | |
22516 | break; | |
22517 | ||
22518 | default: | |
b98664d3 | 22519 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
22520 | dwarf_form_name (attr->form)); |
22521 | break; | |
22522 | } | |
22523 | ||
22524 | return result; | |
22525 | } | |
22526 | ||
d4c9a4f8 | 22527 | /* See read.h. */ |
7942e96e AA |
22528 | |
22529 | struct type * | |
9c541725 | 22530 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
d4c9a4f8 | 22531 | dwarf2_per_cu_data *per_cu) |
7942e96e AA |
22532 | { |
22533 | struct dwarf2_cu *cu; | |
22534 | struct die_info *die; | |
22535 | ||
7942e96e | 22536 | if (per_cu->cu == NULL) |
58f0c718 | 22537 | load_cu (per_cu, false); |
7942e96e AA |
22538 | cu = per_cu->cu; |
22539 | if (!cu) | |
22540 | return NULL; | |
22541 | ||
9c541725 | 22542 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
22543 | if (!die) |
22544 | return NULL; | |
22545 | ||
22546 | return die_type (die, cu); | |
22547 | } | |
22548 | ||
8cb5117c | 22549 | /* See read.h. */ |
8a9b8146 TT |
22550 | |
22551 | struct type * | |
b64f50a1 | 22552 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
22553 | struct dwarf2_per_cu_data *per_cu) |
22554 | { | |
9c541725 | 22555 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
b64f50a1 | 22556 | return get_die_type_at_offset (die_offset_sect, per_cu); |
8a9b8146 TT |
22557 | } |
22558 | ||
ac9ec31b | 22559 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 22560 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
22561 | On exit *REF_CU is the CU of the result. |
22562 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
22563 | |
22564 | static struct die_info * | |
ac9ec31b DE |
22565 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
22566 | struct dwarf2_cu **ref_cu) | |
348e048f | 22567 | { |
348e048f | 22568 | struct die_info temp_die; |
c24bdb02 | 22569 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f DE |
22570 | struct die_info *die; |
22571 | ||
ac9ec31b DE |
22572 | /* While it might be nice to assert sig_type->type == NULL here, |
22573 | we can get here for DW_AT_imported_declaration where we need | |
22574 | the DIE not the type. */ | |
348e048f DE |
22575 | |
22576 | /* If necessary, add it to the queue and load its DIEs. */ | |
22577 | ||
95554aad | 22578 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 22579 | read_signatured_type (sig_type); |
348e048f | 22580 | |
348e048f | 22581 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 22582 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
22583 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
22584 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 22585 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 22586 | to_underlying (temp_die.sect_off)); |
348e048f DE |
22587 | if (die) |
22588 | { | |
5e22e966 | 22589 | struct dwarf2_per_objfile *dwarf2_per_objfile = (*ref_cu)->per_objfile; |
ed2dc618 | 22590 | |
796a7ff8 DE |
22591 | /* For .gdb_index version 7 keep track of included TUs. |
22592 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
5989a64e SM |
22593 | if (dwarf2_per_objfile->per_bfd->index_table != NULL |
22594 | && dwarf2_per_objfile->per_bfd->index_table->version <= 7) | |
796a7ff8 | 22595 | { |
ae640021 | 22596 | (*ref_cu)->per_cu->imported_symtabs_push (sig_cu->per_cu); |
796a7ff8 DE |
22597 | } |
22598 | ||
348e048f | 22599 | *ref_cu = sig_cu; |
c24bdb02 KS |
22600 | if (sig_cu != cu) |
22601 | sig_cu->ancestor = cu; | |
22602 | ||
348e048f DE |
22603 | return die; |
22604 | } | |
22605 | ||
ac9ec31b DE |
22606 | return NULL; |
22607 | } | |
22608 | ||
22609 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
22610 | On entry *REF_CU is the CU of SRC_DIE. | |
22611 | On exit *REF_CU is the CU of the result. | |
22612 | The result is the DIE of the type. | |
22613 | If the referenced type cannot be found an error is thrown. */ | |
22614 | ||
22615 | static struct die_info * | |
ff39bb5e | 22616 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
22617 | struct dwarf2_cu **ref_cu) |
22618 | { | |
22619 | ULONGEST signature = DW_SIGNATURE (attr); | |
22620 | struct signatured_type *sig_type; | |
22621 | struct die_info *die; | |
22622 | ||
22623 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
22624 | ||
a2ce51a0 | 22625 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
22626 | /* sig_type will be NULL if the signatured type is missing from |
22627 | the debug info. */ | |
22628 | if (sig_type == NULL) | |
22629 | { | |
22630 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
22631 | " from DIE at %s [in module %s]"), |
22632 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 22633 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
22634 | } |
22635 | ||
22636 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
22637 | if (die == NULL) | |
22638 | { | |
22639 | dump_die_for_error (src_die); | |
22640 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
22641 | " from DIE at %s [in module %s]"), |
22642 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
5e22e966 | 22643 | objfile_name ((*ref_cu)->per_objfile->objfile)); |
ac9ec31b DE |
22644 | } |
22645 | ||
22646 | return die; | |
22647 | } | |
22648 | ||
22649 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
22650 | reading in and processing the type unit if necessary. */ | |
22651 | ||
22652 | static struct type * | |
22653 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
22654 | struct dwarf2_cu *cu) | |
22655 | { | |
5e22e966 | 22656 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ac9ec31b DE |
22657 | struct signatured_type *sig_type; |
22658 | struct dwarf2_cu *type_cu; | |
22659 | struct die_info *type_die; | |
22660 | struct type *type; | |
22661 | ||
a2ce51a0 | 22662 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
22663 | /* sig_type will be NULL if the signatured type is missing from |
22664 | the debug info. */ | |
22665 | if (sig_type == NULL) | |
22666 | { | |
b98664d3 | 22667 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
22668 | " from DIE at %s [in module %s]"), |
22669 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22670 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22671 | return build_error_marker_type (cu, die); |
22672 | } | |
22673 | ||
22674 | /* If we already know the type we're done. */ | |
22675 | if (sig_type->type != NULL) | |
22676 | return sig_type->type; | |
22677 | ||
22678 | type_cu = cu; | |
22679 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
22680 | if (type_die != NULL) | |
22681 | { | |
22682 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
22683 | is created. This is important, for example, because for c++ classes | |
22684 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
22685 | type = read_type_die (type_die, type_cu); | |
22686 | if (type == NULL) | |
22687 | { | |
b98664d3 | 22688 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
22689 | " referenced from DIE at %s [in module %s]"), |
22690 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22691 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22692 | type = build_error_marker_type (cu, die); |
22693 | } | |
22694 | } | |
22695 | else | |
22696 | { | |
b98664d3 | 22697 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
22698 | " from DIE at %s [in module %s]"), |
22699 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 22700 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22701 | type = build_error_marker_type (cu, die); |
22702 | } | |
22703 | sig_type->type = type; | |
22704 | ||
22705 | return type; | |
22706 | } | |
22707 | ||
22708 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
22709 | reading in and processing the type unit if necessary. */ | |
22710 | ||
22711 | static struct type * | |
ff39bb5e | 22712 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 22713 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
22714 | { |
22715 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
cd6c91b4 | 22716 | if (attr->form_is_ref ()) |
ac9ec31b DE |
22717 | { |
22718 | struct dwarf2_cu *type_cu = cu; | |
22719 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
22720 | ||
22721 | return read_type_die (type_die, type_cu); | |
22722 | } | |
22723 | else if (attr->form == DW_FORM_ref_sig8) | |
22724 | { | |
22725 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
22726 | } | |
22727 | else | |
22728 | { | |
5e22e966 | 22729 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 22730 | |
b98664d3 | 22731 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
22732 | " at %s [in module %s]"), |
22733 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
4262abfb | 22734 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
22735 | return build_error_marker_type (cu, die); |
22736 | } | |
348e048f DE |
22737 | } |
22738 | ||
e5fe5e75 | 22739 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
22740 | |
22741 | static void | |
e5fe5e75 | 22742 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 22743 | { |
52dc124a | 22744 | struct signatured_type *sig_type; |
348e048f | 22745 | |
f4dc4d17 | 22746 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
197400e8 | 22747 | gdb_assert (! per_cu->type_unit_group_p ()); |
f4dc4d17 | 22748 | |
6721b2ec DE |
22749 | /* We have the per_cu, but we need the signatured_type. |
22750 | Fortunately this is an easy translation. */ | |
22751 | gdb_assert (per_cu->is_debug_types); | |
22752 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 22753 | |
6721b2ec | 22754 | gdb_assert (per_cu->cu == NULL); |
348e048f | 22755 | |
52dc124a | 22756 | read_signatured_type (sig_type); |
348e048f | 22757 | |
6721b2ec | 22758 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
22759 | } |
22760 | ||
3019eac3 DE |
22761 | /* Read in a signatured type and build its CU and DIEs. |
22762 | If the type is a stub for the real type in a DWO file, | |
22763 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
22764 | |
22765 | static void | |
22766 | read_signatured_type (struct signatured_type *sig_type) | |
22767 | { | |
22768 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 22769 | |
3019eac3 | 22770 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 22771 | gdb_assert (per_cu->cu == NULL); |
348e048f | 22772 | |
6751ebae | 22773 | cutu_reader reader (per_cu, NULL, 0, false); |
c0ab21c2 TT |
22774 | |
22775 | if (!reader.dummy_p) | |
22776 | { | |
22777 | struct dwarf2_cu *cu = reader.cu; | |
22778 | const gdb_byte *info_ptr = reader.info_ptr; | |
22779 | ||
22780 | gdb_assert (cu->die_hash == NULL); | |
22781 | cu->die_hash = | |
22782 | htab_create_alloc_ex (cu->header.length / 12, | |
22783 | die_hash, | |
22784 | die_eq, | |
22785 | NULL, | |
22786 | &cu->comp_unit_obstack, | |
22787 | hashtab_obstack_allocate, | |
22788 | dummy_obstack_deallocate); | |
22789 | ||
3e225074 | 22790 | if (reader.comp_unit_die->has_children) |
c0ab21c2 TT |
22791 | reader.comp_unit_die->child |
22792 | = read_die_and_siblings (&reader, info_ptr, &info_ptr, | |
22793 | reader.comp_unit_die); | |
22794 | cu->dies = reader.comp_unit_die; | |
22795 | /* comp_unit_die is not stored in die_hash, no need. */ | |
22796 | ||
22797 | /* We try not to read any attributes in this function, because | |
22798 | not all CUs needed for references have been loaded yet, and | |
22799 | symbol table processing isn't initialized. But we have to | |
22800 | set the CU language, or we won't be able to build types | |
22801 | correctly. Similarly, if we do not read the producer, we can | |
22802 | not apply producer-specific interpretation. */ | |
22803 | prepare_one_comp_unit (cu, cu->dies, language_minimal); | |
6751ebae TT |
22804 | |
22805 | reader.keep (); | |
c0ab21c2 TT |
22806 | } |
22807 | ||
7ee85ab1 | 22808 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
22809 | } |
22810 | ||
c906108c SS |
22811 | /* Decode simple location descriptions. |
22812 | Given a pointer to a dwarf block that defines a location, compute | |
7d79de9a TT |
22813 | the location and return the value. If COMPUTED is non-null, it is |
22814 | set to true to indicate that decoding was successful, and false | |
22815 | otherwise. If COMPUTED is null, then this function may emit a | |
22816 | complaint. */ | |
c906108c SS |
22817 | |
22818 | static CORE_ADDR | |
7d79de9a | 22819 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu, bool *computed) |
c906108c | 22820 | { |
5e22e966 | 22821 | struct objfile *objfile = cu->per_objfile->objfile; |
56eb65bd SP |
22822 | size_t i; |
22823 | size_t size = blk->size; | |
d521ce57 | 22824 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
22825 | CORE_ADDR stack[64]; |
22826 | int stacki; | |
22827 | unsigned int bytes_read, unsnd; | |
22828 | gdb_byte op; | |
c906108c | 22829 | |
7d79de9a TT |
22830 | if (computed != nullptr) |
22831 | *computed = false; | |
22832 | ||
21ae7a4d JK |
22833 | i = 0; |
22834 | stacki = 0; | |
22835 | stack[stacki] = 0; | |
22836 | stack[++stacki] = 0; | |
22837 | ||
22838 | while (i < size) | |
22839 | { | |
22840 | op = data[i++]; | |
22841 | switch (op) | |
22842 | { | |
22843 | case DW_OP_lit0: | |
22844 | case DW_OP_lit1: | |
22845 | case DW_OP_lit2: | |
22846 | case DW_OP_lit3: | |
22847 | case DW_OP_lit4: | |
22848 | case DW_OP_lit5: | |
22849 | case DW_OP_lit6: | |
22850 | case DW_OP_lit7: | |
22851 | case DW_OP_lit8: | |
22852 | case DW_OP_lit9: | |
22853 | case DW_OP_lit10: | |
22854 | case DW_OP_lit11: | |
22855 | case DW_OP_lit12: | |
22856 | case DW_OP_lit13: | |
22857 | case DW_OP_lit14: | |
22858 | case DW_OP_lit15: | |
22859 | case DW_OP_lit16: | |
22860 | case DW_OP_lit17: | |
22861 | case DW_OP_lit18: | |
22862 | case DW_OP_lit19: | |
22863 | case DW_OP_lit20: | |
22864 | case DW_OP_lit21: | |
22865 | case DW_OP_lit22: | |
22866 | case DW_OP_lit23: | |
22867 | case DW_OP_lit24: | |
22868 | case DW_OP_lit25: | |
22869 | case DW_OP_lit26: | |
22870 | case DW_OP_lit27: | |
22871 | case DW_OP_lit28: | |
22872 | case DW_OP_lit29: | |
22873 | case DW_OP_lit30: | |
22874 | case DW_OP_lit31: | |
22875 | stack[++stacki] = op - DW_OP_lit0; | |
22876 | break; | |
f1bea926 | 22877 | |
21ae7a4d JK |
22878 | case DW_OP_reg0: |
22879 | case DW_OP_reg1: | |
22880 | case DW_OP_reg2: | |
22881 | case DW_OP_reg3: | |
22882 | case DW_OP_reg4: | |
22883 | case DW_OP_reg5: | |
22884 | case DW_OP_reg6: | |
22885 | case DW_OP_reg7: | |
22886 | case DW_OP_reg8: | |
22887 | case DW_OP_reg9: | |
22888 | case DW_OP_reg10: | |
22889 | case DW_OP_reg11: | |
22890 | case DW_OP_reg12: | |
22891 | case DW_OP_reg13: | |
22892 | case DW_OP_reg14: | |
22893 | case DW_OP_reg15: | |
22894 | case DW_OP_reg16: | |
22895 | case DW_OP_reg17: | |
22896 | case DW_OP_reg18: | |
22897 | case DW_OP_reg19: | |
22898 | case DW_OP_reg20: | |
22899 | case DW_OP_reg21: | |
22900 | case DW_OP_reg22: | |
22901 | case DW_OP_reg23: | |
22902 | case DW_OP_reg24: | |
22903 | case DW_OP_reg25: | |
22904 | case DW_OP_reg26: | |
22905 | case DW_OP_reg27: | |
22906 | case DW_OP_reg28: | |
22907 | case DW_OP_reg29: | |
22908 | case DW_OP_reg30: | |
22909 | case DW_OP_reg31: | |
22910 | stack[++stacki] = op - DW_OP_reg0; | |
22911 | if (i < size) | |
7d79de9a TT |
22912 | { |
22913 | if (computed == nullptr) | |
22914 | dwarf2_complex_location_expr_complaint (); | |
22915 | else | |
22916 | return 0; | |
22917 | } | |
21ae7a4d | 22918 | break; |
c906108c | 22919 | |
21ae7a4d JK |
22920 | case DW_OP_regx: |
22921 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
22922 | i += bytes_read; | |
22923 | stack[++stacki] = unsnd; | |
22924 | if (i < size) | |
7d79de9a TT |
22925 | { |
22926 | if (computed == nullptr) | |
22927 | dwarf2_complex_location_expr_complaint (); | |
22928 | else | |
22929 | return 0; | |
22930 | } | |
21ae7a4d | 22931 | break; |
c906108c | 22932 | |
21ae7a4d | 22933 | case DW_OP_addr: |
c8a7a66f TT |
22934 | stack[++stacki] = cu->header.read_address (objfile->obfd, &data[i], |
22935 | &bytes_read); | |
21ae7a4d JK |
22936 | i += bytes_read; |
22937 | break; | |
d53d4ac5 | 22938 | |
21ae7a4d JK |
22939 | case DW_OP_const1u: |
22940 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
22941 | i += 1; | |
22942 | break; | |
22943 | ||
22944 | case DW_OP_const1s: | |
22945 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
22946 | i += 1; | |
22947 | break; | |
22948 | ||
22949 | case DW_OP_const2u: | |
22950 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
22951 | i += 2; | |
22952 | break; | |
22953 | ||
22954 | case DW_OP_const2s: | |
22955 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
22956 | i += 2; | |
22957 | break; | |
d53d4ac5 | 22958 | |
21ae7a4d JK |
22959 | case DW_OP_const4u: |
22960 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
22961 | i += 4; | |
22962 | break; | |
22963 | ||
22964 | case DW_OP_const4s: | |
22965 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
22966 | i += 4; | |
22967 | break; | |
22968 | ||
585861ea JK |
22969 | case DW_OP_const8u: |
22970 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
22971 | i += 8; | |
22972 | break; | |
22973 | ||
21ae7a4d JK |
22974 | case DW_OP_constu: |
22975 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
22976 | &bytes_read); | |
22977 | i += bytes_read; | |
22978 | break; | |
22979 | ||
22980 | case DW_OP_consts: | |
22981 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
22982 | i += bytes_read; | |
22983 | break; | |
22984 | ||
22985 | case DW_OP_dup: | |
22986 | stack[stacki + 1] = stack[stacki]; | |
22987 | stacki++; | |
22988 | break; | |
22989 | ||
22990 | case DW_OP_plus: | |
22991 | stack[stacki - 1] += stack[stacki]; | |
22992 | stacki--; | |
22993 | break; | |
22994 | ||
22995 | case DW_OP_plus_uconst: | |
22996 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
22997 | &bytes_read); | |
22998 | i += bytes_read; | |
22999 | break; | |
23000 | ||
23001 | case DW_OP_minus: | |
23002 | stack[stacki - 1] -= stack[stacki]; | |
23003 | stacki--; | |
23004 | break; | |
23005 | ||
23006 | case DW_OP_deref: | |
23007 | /* If we're not the last op, then we definitely can't encode | |
23008 | this using GDB's address_class enum. This is valid for partial | |
23009 | global symbols, although the variable's address will be bogus | |
23010 | in the psymtab. */ | |
23011 | if (i < size) | |
7d79de9a TT |
23012 | { |
23013 | if (computed == nullptr) | |
23014 | dwarf2_complex_location_expr_complaint (); | |
23015 | else | |
23016 | return 0; | |
23017 | } | |
21ae7a4d JK |
23018 | break; |
23019 | ||
23020 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 23021 | case DW_OP_form_tls_address: |
21ae7a4d JK |
23022 | /* The top of the stack has the offset from the beginning |
23023 | of the thread control block at which the variable is located. */ | |
23024 | /* Nothing should follow this operator, so the top of stack would | |
23025 | be returned. */ | |
23026 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
23027 | address will be bogus in the psymtab. Make it always at least |
23028 | non-zero to not look as a variable garbage collected by linker | |
23029 | which have DW_OP_addr 0. */ | |
21ae7a4d | 23030 | if (i < size) |
7d79de9a TT |
23031 | { |
23032 | if (computed == nullptr) | |
23033 | dwarf2_complex_location_expr_complaint (); | |
23034 | else | |
23035 | return 0; | |
23036 | } | |
585861ea | 23037 | stack[stacki]++; |
21ae7a4d JK |
23038 | break; |
23039 | ||
23040 | case DW_OP_GNU_uninit: | |
7d79de9a TT |
23041 | if (computed != nullptr) |
23042 | return 0; | |
21ae7a4d JK |
23043 | break; |
23044 | ||
336d760d | 23045 | case DW_OP_addrx: |
3019eac3 | 23046 | case DW_OP_GNU_addr_index: |
49f6c839 | 23047 | case DW_OP_GNU_const_index: |
3019eac3 DE |
23048 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
23049 | &bytes_read); | |
23050 | i += bytes_read; | |
23051 | break; | |
23052 | ||
21ae7a4d | 23053 | default: |
7d79de9a TT |
23054 | if (computed == nullptr) |
23055 | { | |
23056 | const char *name = get_DW_OP_name (op); | |
21ae7a4d | 23057 | |
7d79de9a TT |
23058 | if (name) |
23059 | complaint (_("unsupported stack op: '%s'"), | |
23060 | name); | |
23061 | else | |
23062 | complaint (_("unsupported stack op: '%02x'"), | |
23063 | op); | |
23064 | } | |
21ae7a4d JK |
23065 | |
23066 | return (stack[stacki]); | |
d53d4ac5 | 23067 | } |
3c6e0cb3 | 23068 | |
21ae7a4d JK |
23069 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
23070 | outside of the allocated space. Also enforce minimum>0. */ | |
23071 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
23072 | { | |
7d79de9a TT |
23073 | if (computed == nullptr) |
23074 | complaint (_("location description stack overflow")); | |
21ae7a4d JK |
23075 | return 0; |
23076 | } | |
23077 | ||
23078 | if (stacki <= 0) | |
23079 | { | |
7d79de9a TT |
23080 | if (computed == nullptr) |
23081 | complaint (_("location description stack underflow")); | |
21ae7a4d JK |
23082 | return 0; |
23083 | } | |
23084 | } | |
7d79de9a TT |
23085 | |
23086 | if (computed != nullptr) | |
23087 | *computed = true; | |
21ae7a4d | 23088 | return (stack[stacki]); |
c906108c SS |
23089 | } |
23090 | ||
23091 | /* memory allocation interface */ | |
23092 | ||
c906108c | 23093 | static struct dwarf_block * |
7b5a2f43 | 23094 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 23095 | { |
8d749320 | 23096 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
23097 | } |
23098 | ||
c906108c | 23099 | static struct die_info * |
b60c80d6 | 23100 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
23101 | { |
23102 | struct die_info *die; | |
b60c80d6 DJ |
23103 | size_t size = sizeof (struct die_info); |
23104 | ||
23105 | if (num_attrs > 1) | |
23106 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 23107 | |
b60c80d6 | 23108 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
23109 | memset (die, 0, sizeof (struct die_info)); |
23110 | return (die); | |
23111 | } | |
2e276125 JB |
23112 | |
23113 | \f | |
a036ba48 | 23114 | |
c90ec28a | 23115 | /* Macro support. */ |
cf2c3c16 | 23116 | |
9eac9650 TT |
23117 | /* An overload of dwarf_decode_macros that finds the correct section |
23118 | and ensures it is read in before calling the other overload. */ | |
23119 | ||
23120 | static void | |
23121 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, | |
23122 | int section_is_gnu) | |
23123 | { | |
5e22e966 | 23124 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
9eac9650 | 23125 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5a0e026f | 23126 | const struct line_header *lh = cu->line_header; |
9eac9650 TT |
23127 | unsigned int offset_size = cu->header.offset_size; |
23128 | struct dwarf2_section_info *section; | |
23129 | const char *section_name; | |
23130 | ||
23131 | if (cu->dwo_unit != nullptr) | |
23132 | { | |
23133 | if (section_is_gnu) | |
23134 | { | |
23135 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
23136 | section_name = ".debug_macro.dwo"; | |
23137 | } | |
23138 | else | |
23139 | { | |
23140 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
23141 | section_name = ".debug_macinfo.dwo"; | |
23142 | } | |
23143 | } | |
23144 | else | |
23145 | { | |
23146 | if (section_is_gnu) | |
23147 | { | |
5989a64e | 23148 | section = &dwarf2_per_objfile->per_bfd->macro; |
9eac9650 TT |
23149 | section_name = ".debug_macro"; |
23150 | } | |
23151 | else | |
23152 | { | |
5989a64e | 23153 | section = &dwarf2_per_objfile->per_bfd->macinfo; |
9eac9650 TT |
23154 | section_name = ".debug_macinfo"; |
23155 | } | |
23156 | } | |
23157 | ||
23158 | section->read (objfile); | |
23159 | if (section->buffer == nullptr) | |
23160 | { | |
23161 | complaint (_("missing %s section"), section_name); | |
23162 | return; | |
23163 | } | |
23164 | ||
23165 | buildsym_compunit *builder = cu->get_builder (); | |
23166 | ||
23167 | dwarf_decode_macros (dwarf2_per_objfile, builder, section, lh, | |
23168 | offset_size, offset, section_is_gnu); | |
23169 | } | |
23170 | ||
3019eac3 DE |
23171 | /* Return the .debug_loc section to use for CU. |
23172 | For DWO files use .debug_loc.dwo. */ | |
23173 | ||
23174 | static struct dwarf2_section_info * | |
23175 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
23176 | { | |
5e22e966 | 23177 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
ed2dc618 | 23178 | |
3019eac3 | 23179 | if (cu->dwo_unit) |
43988095 JK |
23180 | { |
23181 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
5f48f8f3 | 23182 | |
43988095 JK |
23183 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; |
23184 | } | |
5989a64e SM |
23185 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->per_bfd->loclists |
23186 | : &dwarf2_per_objfile->per_bfd->loc); | |
3019eac3 DE |
23187 | } |
23188 | ||
8cf6f0b1 TT |
23189 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
23190 | ||
23191 | static void | |
23192 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
23193 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 23194 | const struct attribute *attr) |
8cf6f0b1 | 23195 | { |
5e22e966 | 23196 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
3019eac3 DE |
23197 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
23198 | ||
96b79293 | 23199 | section->read (dwarf2_per_objfile->objfile); |
8cf6f0b1 | 23200 | |
a50264ba | 23201 | baton->per_objfile = dwarf2_per_objfile; |
8cf6f0b1 TT |
23202 | baton->per_cu = cu->per_cu; |
23203 | gdb_assert (baton->per_cu); | |
23204 | /* We don't know how long the location list is, but make sure we | |
23205 | don't run off the edge of the section. */ | |
3019eac3 DE |
23206 | baton->size = section->size - DW_UNSND (attr); |
23207 | baton->data = section->buffer + DW_UNSND (attr); | |
2b24b6e4 TT |
23208 | if (cu->base_address.has_value ()) |
23209 | baton->base_address = *cu->base_address; | |
23210 | else | |
23211 | baton->base_address = 0; | |
f664829e | 23212 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
23213 | } |
23214 | ||
4c2df51b | 23215 | static void |
ff39bb5e | 23216 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 23217 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 23218 | { |
5e22e966 | 23219 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
bb5ed363 | 23220 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 23221 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 23222 | |
cd6c91b4 | 23223 | if (attr->form_is_section_offset () |
3019eac3 | 23224 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
23225 | the section. If so, fall through to the complaint in the |
23226 | other branch. */ | |
2c7d5afc | 23227 | && DW_UNSND (attr) < section->get_size (objfile)) |
4c2df51b | 23228 | { |
0d53c4c4 | 23229 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 23230 | |
8d749320 | 23231 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 23232 | |
8cf6f0b1 | 23233 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 23234 | |
2b24b6e4 | 23235 | if (!cu->base_address.has_value ()) |
b98664d3 | 23236 | complaint (_("Location list used without " |
3e43a32a | 23237 | "specifying the CU base address.")); |
4c2df51b | 23238 | |
f1e6e072 TT |
23239 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
23240 | ? dwarf2_loclist_block_index | |
23241 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
23242 | SYMBOL_LOCATION_BATON (sym) = baton; |
23243 | } | |
23244 | else | |
23245 | { | |
23246 | struct dwarf2_locexpr_baton *baton; | |
23247 | ||
8d749320 | 23248 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
a50264ba | 23249 | baton->per_objfile = dwarf2_per_objfile; |
ae0d2f24 UW |
23250 | baton->per_cu = cu->per_cu; |
23251 | gdb_assert (baton->per_cu); | |
0d53c4c4 | 23252 | |
4fc6c0d5 | 23253 | if (attr->form_is_block ()) |
0d53c4c4 DJ |
23254 | { |
23255 | /* Note that we're just copying the block's data pointer | |
23256 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
23257 | info_buffer for SYM's objfile; right now we never release |
23258 | that buffer, but when we do clean up properly this may | |
23259 | need to change. */ | |
0d53c4c4 DJ |
23260 | baton->size = DW_BLOCK (attr)->size; |
23261 | baton->data = DW_BLOCK (attr)->data; | |
23262 | } | |
23263 | else | |
23264 | { | |
23265 | dwarf2_invalid_attrib_class_complaint ("location description", | |
987012b8 | 23266 | sym->natural_name ()); |
0d53c4c4 | 23267 | baton->size = 0; |
0d53c4c4 | 23268 | } |
6e70227d | 23269 | |
f1e6e072 TT |
23270 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
23271 | ? dwarf2_locexpr_block_index | |
23272 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
23273 | SYMBOL_LOCATION_BATON (sym) = baton; |
23274 | } | |
4c2df51b | 23275 | } |
6502dd73 | 23276 | |
09ba997f | 23277 | /* See read.h. */ |
ae0d2f24 UW |
23278 | |
23279 | struct objfile * | |
09ba997f | 23280 | dwarf2_per_cu_data::objfile () const |
ae0d2f24 | 23281 | { |
09ba997f | 23282 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
ae0d2f24 UW |
23283 | |
23284 | /* Return the master objfile, so that we can report and look up the | |
23285 | correct file containing this variable. */ | |
23286 | if (objfile->separate_debug_objfile_backlink) | |
23287 | objfile = objfile->separate_debug_objfile_backlink; | |
23288 | ||
23289 | return objfile; | |
23290 | } | |
23291 | ||
96408a79 SA |
23292 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
23293 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
23294 | CU_HEADERP first. */ | |
23295 | ||
23296 | static const struct comp_unit_head * | |
23297 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
09ba997f | 23298 | const struct dwarf2_per_cu_data *per_cu) |
96408a79 | 23299 | { |
d521ce57 | 23300 | const gdb_byte *info_ptr; |
96408a79 SA |
23301 | |
23302 | if (per_cu->cu) | |
23303 | return &per_cu->cu->header; | |
23304 | ||
9c541725 | 23305 | info_ptr = per_cu->section->buffer + to_underlying (per_cu->sect_off); |
96408a79 SA |
23306 | |
23307 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
23308 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
23309 | rcuh_kind::COMPILE); | |
96408a79 SA |
23310 | |
23311 | return cu_headerp; | |
23312 | } | |
23313 | ||
09ba997f | 23314 | /* See read.h. */ |
ae0d2f24 | 23315 | |
98714339 | 23316 | int |
09ba997f | 23317 | dwarf2_per_cu_data::addr_size () const |
ae0d2f24 | 23318 | { |
96408a79 SA |
23319 | struct comp_unit_head cu_header_local; |
23320 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 23321 | |
09ba997f | 23322 | cu_headerp = per_cu_header_read_in (&cu_header_local, this); |
96408a79 SA |
23323 | |
23324 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
23325 | } |
23326 | ||
09ba997f | 23327 | /* See read.h. */ |
9eae7c52 TT |
23328 | |
23329 | int | |
09ba997f | 23330 | dwarf2_per_cu_data::offset_size () const |
9eae7c52 | 23331 | { |
96408a79 SA |
23332 | struct comp_unit_head cu_header_local; |
23333 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 23334 | |
09ba997f | 23335 | cu_headerp = per_cu_header_read_in (&cu_header_local, this); |
96408a79 SA |
23336 | |
23337 | return cu_headerp->offset_size; | |
23338 | } | |
23339 | ||
09ba997f | 23340 | /* See read.h. */ |
96408a79 SA |
23341 | |
23342 | int | |
09ba997f | 23343 | dwarf2_per_cu_data::ref_addr_size () const |
96408a79 SA |
23344 | { |
23345 | struct comp_unit_head cu_header_local; | |
23346 | const struct comp_unit_head *cu_headerp; | |
23347 | ||
09ba997f | 23348 | cu_headerp = per_cu_header_read_in (&cu_header_local, this); |
96408a79 SA |
23349 | |
23350 | if (cu_headerp->version == 2) | |
23351 | return cu_headerp->addr_size; | |
23352 | else | |
23353 | return cu_headerp->offset_size; | |
181cebd4 JK |
23354 | } |
23355 | ||
09ba997f | 23356 | /* See read.h. */ |
9aa1f1e3 TT |
23357 | |
23358 | CORE_ADDR | |
09ba997f | 23359 | dwarf2_per_cu_data::text_offset () const |
9aa1f1e3 | 23360 | { |
09ba997f TT |
23361 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
23362 | ||
23363 | return objfile->text_section_offset (); | |
9aa1f1e3 TT |
23364 | } |
23365 | ||
09ba997f TT |
23366 | /* See read.h. */ |
23367 | ||
23368 | struct type * | |
23369 | dwarf2_per_cu_data::addr_type () const | |
9a49df9d | 23370 | { |
09ba997f | 23371 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
9a49df9d AB |
23372 | struct type *void_type = objfile_type (objfile)->builtin_void; |
23373 | struct type *addr_type = lookup_pointer_type (void_type); | |
09ba997f | 23374 | int addr_size = this->addr_size (); |
9a49df9d AB |
23375 | |
23376 | if (TYPE_LENGTH (addr_type) == addr_size) | |
23377 | return addr_type; | |
23378 | ||
09ba997f | 23379 | addr_type = addr_sized_int_type (TYPE_UNSIGNED (addr_type)); |
9a49df9d AB |
23380 | return addr_type; |
23381 | } | |
23382 | ||
22b6cd70 TT |
23383 | /* A helper function for dwarf2_find_containing_comp_unit that returns |
23384 | the index of the result, and that searches a vector. It will | |
23385 | return a result even if the offset in question does not actually | |
23386 | occur in any CU. This is separate so that it can be unit | |
23387 | tested. */ | |
ae038cb0 | 23388 | |
22b6cd70 TT |
23389 | static int |
23390 | dwarf2_find_containing_comp_unit | |
23391 | (sect_offset sect_off, | |
23392 | unsigned int offset_in_dwz, | |
23393 | const std::vector<dwarf2_per_cu_data *> &all_comp_units) | |
ae038cb0 | 23394 | { |
ae038cb0 DJ |
23395 | int low, high; |
23396 | ||
ae038cb0 | 23397 | low = 0; |
22b6cd70 | 23398 | high = all_comp_units.size () - 1; |
ae038cb0 DJ |
23399 | while (high > low) |
23400 | { | |
36586728 | 23401 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 23402 | int mid = low + (high - low) / 2; |
9a619af0 | 23403 | |
22b6cd70 | 23404 | mid_cu = all_comp_units[mid]; |
36586728 | 23405 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 23406 | || (mid_cu->is_dwz == offset_in_dwz |
22b6cd70 | 23407 | && mid_cu->sect_off + mid_cu->length > sect_off)) |
ae038cb0 DJ |
23408 | high = mid; |
23409 | else | |
23410 | low = mid + 1; | |
23411 | } | |
23412 | gdb_assert (low == high); | |
22b6cd70 TT |
23413 | return low; |
23414 | } | |
23415 | ||
23416 | /* Locate the .debug_info compilation unit from CU's objfile which contains | |
23417 | the DIE at OFFSET. Raises an error on failure. */ | |
23418 | ||
23419 | static struct dwarf2_per_cu_data * | |
23420 | dwarf2_find_containing_comp_unit (sect_offset sect_off, | |
23421 | unsigned int offset_in_dwz, | |
23422 | struct dwarf2_per_objfile *dwarf2_per_objfile) | |
23423 | { | |
23424 | int low | |
23425 | = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, | |
5989a64e | 23426 | dwarf2_per_objfile->per_bfd->all_comp_units); |
22b6cd70 | 23427 | struct dwarf2_per_cu_data *this_cu |
5989a64e | 23428 | = dwarf2_per_objfile->per_bfd->all_comp_units[low]; |
22b6cd70 | 23429 | |
45b8ae0c | 23430 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 23431 | { |
36586728 | 23432 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 23433 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
23434 | "offset %s [in module %s]"), |
23435 | sect_offset_str (sect_off), | |
ed2dc618 | 23436 | bfd_get_filename (dwarf2_per_objfile->objfile->obfd)); |
10b3939b | 23437 | |
5989a64e | 23438 | gdb_assert (dwarf2_per_objfile->per_bfd->all_comp_units[low-1]->sect_off |
9c541725 | 23439 | <= sect_off); |
5989a64e | 23440 | return dwarf2_per_objfile->per_bfd->all_comp_units[low-1]; |
ae038cb0 DJ |
23441 | } |
23442 | else | |
23443 | { | |
5989a64e | 23444 | if (low == dwarf2_per_objfile->per_bfd->all_comp_units.size () - 1 |
9c541725 | 23445 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 23446 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 23447 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
23448 | return this_cu; |
23449 | } | |
23450 | } | |
23451 | ||
22b6cd70 TT |
23452 | #if GDB_SELF_TEST |
23453 | ||
23454 | namespace selftests { | |
23455 | namespace find_containing_comp_unit { | |
23456 | ||
23457 | static void | |
23458 | run_test () | |
23459 | { | |
23460 | struct dwarf2_per_cu_data one {}; | |
23461 | struct dwarf2_per_cu_data two {}; | |
23462 | struct dwarf2_per_cu_data three {}; | |
23463 | struct dwarf2_per_cu_data four {}; | |
23464 | ||
23465 | one.length = 5; | |
23466 | two.sect_off = sect_offset (one.length); | |
23467 | two.length = 7; | |
23468 | ||
23469 | three.length = 5; | |
23470 | three.is_dwz = 1; | |
23471 | four.sect_off = sect_offset (three.length); | |
23472 | four.length = 7; | |
23473 | four.is_dwz = 1; | |
23474 | ||
23475 | std::vector<dwarf2_per_cu_data *> units; | |
23476 | units.push_back (&one); | |
23477 | units.push_back (&two); | |
23478 | units.push_back (&three); | |
23479 | units.push_back (&four); | |
23480 | ||
23481 | int result; | |
23482 | ||
23483 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 0, units); | |
23484 | SELF_CHECK (units[result] == &one); | |
23485 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 0, units); | |
23486 | SELF_CHECK (units[result] == &one); | |
23487 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 0, units); | |
23488 | SELF_CHECK (units[result] == &two); | |
23489 | ||
23490 | result = dwarf2_find_containing_comp_unit (sect_offset (0), 1, units); | |
23491 | SELF_CHECK (units[result] == &three); | |
23492 | result = dwarf2_find_containing_comp_unit (sect_offset (3), 1, units); | |
23493 | SELF_CHECK (units[result] == &three); | |
23494 | result = dwarf2_find_containing_comp_unit (sect_offset (5), 1, units); | |
23495 | SELF_CHECK (units[result] == &four); | |
23496 | } | |
23497 | ||
23498 | } | |
23499 | } | |
23500 | ||
23501 | #endif /* GDB_SELF_TEST */ | |
23502 | ||
9e021579 | 23503 | /* Initialize dwarf2_cu to read PER_CU, in the context of PER_OBJFILE. */ |
93311388 | 23504 | |
9e021579 SM |
23505 | dwarf2_cu::dwarf2_cu (dwarf2_per_cu_data *per_cu, |
23506 | dwarf2_per_objfile *per_objfile) | |
23507 | : per_cu (per_cu), | |
23508 | per_objfile (per_objfile), | |
9068261f AB |
23509 | mark (false), |
23510 | has_loclist (false), | |
23511 | checked_producer (false), | |
23512 | producer_is_gxx_lt_4_6 (false), | |
23513 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 23514 | producer_is_icc (false), |
9068261f | 23515 | producer_is_icc_lt_14 (false), |
c258c396 | 23516 | producer_is_codewarrior (false), |
9068261f | 23517 | processing_has_namespace_info (false) |
93311388 | 23518 | { |
fcd3b13d SM |
23519 | per_cu->cu = this; |
23520 | } | |
23521 | ||
23522 | /* Destroy a dwarf2_cu. */ | |
23523 | ||
23524 | dwarf2_cu::~dwarf2_cu () | |
23525 | { | |
23526 | per_cu->cu = NULL; | |
9816fde3 JK |
23527 | } |
23528 | ||
23529 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
23530 | ||
23531 | static void | |
95554aad TT |
23532 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
23533 | enum language pretend_language) | |
9816fde3 JK |
23534 | { |
23535 | struct attribute *attr; | |
23536 | ||
23537 | /* Set the language we're debugging. */ | |
23538 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
435d3d88 | 23539 | if (attr != nullptr) |
9816fde3 JK |
23540 | set_cu_language (DW_UNSND (attr), cu); |
23541 | else | |
9cded63f | 23542 | { |
95554aad | 23543 | cu->language = pretend_language; |
9cded63f TT |
23544 | cu->language_defn = language_def (cu->language); |
23545 | } | |
dee91e82 | 23546 | |
7d45c7c3 | 23547 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
23548 | } |
23549 | ||
ae038cb0 DJ |
23550 | /* Increase the age counter on each cached compilation unit, and free |
23551 | any that are too old. */ | |
23552 | ||
23553 | static void | |
ed2dc618 | 23554 | age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
23555 | { |
23556 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
23557 | ||
5989a64e SM |
23558 | dwarf2_clear_marks (dwarf2_per_objfile->per_bfd->read_in_chain); |
23559 | per_cu = dwarf2_per_objfile->per_bfd->read_in_chain; | |
ae038cb0 DJ |
23560 | while (per_cu != NULL) |
23561 | { | |
23562 | per_cu->cu->last_used ++; | |
b4f54984 | 23563 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
23564 | dwarf2_mark (per_cu->cu); |
23565 | per_cu = per_cu->cu->read_in_chain; | |
23566 | } | |
23567 | ||
5989a64e SM |
23568 | per_cu = dwarf2_per_objfile->per_bfd->read_in_chain; |
23569 | last_chain = &dwarf2_per_objfile->per_bfd->read_in_chain; | |
ae038cb0 DJ |
23570 | while (per_cu != NULL) |
23571 | { | |
23572 | struct dwarf2_per_cu_data *next_cu; | |
23573 | ||
23574 | next_cu = per_cu->cu->read_in_chain; | |
23575 | ||
23576 | if (!per_cu->cu->mark) | |
23577 | { | |
fcd3b13d | 23578 | delete per_cu->cu; |
ae038cb0 DJ |
23579 | *last_chain = next_cu; |
23580 | } | |
23581 | else | |
23582 | last_chain = &per_cu->cu->read_in_chain; | |
23583 | ||
23584 | per_cu = next_cu; | |
23585 | } | |
23586 | } | |
23587 | ||
23588 | /* Remove a single compilation unit from the cache. */ | |
23589 | ||
23590 | static void | |
dee91e82 | 23591 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
23592 | { |
23593 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
ed2dc618 SM |
23594 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23595 | = target_per_cu->dwarf2_per_objfile; | |
ae038cb0 | 23596 | |
5989a64e SM |
23597 | per_cu = dwarf2_per_objfile->per_bfd->read_in_chain; |
23598 | last_chain = &dwarf2_per_objfile->per_bfd->read_in_chain; | |
ae038cb0 DJ |
23599 | while (per_cu != NULL) |
23600 | { | |
23601 | struct dwarf2_per_cu_data *next_cu; | |
23602 | ||
23603 | next_cu = per_cu->cu->read_in_chain; | |
23604 | ||
dee91e82 | 23605 | if (per_cu == target_per_cu) |
ae038cb0 | 23606 | { |
fcd3b13d | 23607 | delete per_cu->cu; |
dee91e82 | 23608 | per_cu->cu = NULL; |
ae038cb0 DJ |
23609 | *last_chain = next_cu; |
23610 | break; | |
23611 | } | |
23612 | else | |
23613 | last_chain = &per_cu->cu->read_in_chain; | |
23614 | ||
23615 | per_cu = next_cu; | |
23616 | } | |
23617 | } | |
23618 | ||
dee91e82 DE |
23619 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
23620 | We store these in a hash table separate from the DIEs, and preserve them | |
23621 | when the DIEs are flushed out of cache. | |
23622 | ||
23623 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 23624 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
23625 | or the type may come from a DWO file. Furthermore, while it's more logical |
23626 | to use per_cu->section+offset, with Fission the section with the data is in | |
23627 | the DWO file but we don't know that section at the point we need it. | |
23628 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
23629 | because we can enter the lookup routine, get_die_type_at_offset, from | |
23630 | outside this file, and thus won't necessarily have PER_CU->cu. | |
23631 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 23632 | |
dee91e82 | 23633 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 23634 | { |
dee91e82 | 23635 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 23636 | sect_offset sect_off; |
1c379e20 DJ |
23637 | struct type *type; |
23638 | }; | |
23639 | ||
dee91e82 | 23640 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
23641 | |
23642 | static hashval_t | |
dee91e82 | 23643 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 23644 | { |
9a3c8263 SM |
23645 | const struct dwarf2_per_cu_offset_and_type *ofs |
23646 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 23647 | |
9c541725 | 23648 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
23649 | } |
23650 | ||
dee91e82 | 23651 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
23652 | |
23653 | static int | |
dee91e82 | 23654 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 23655 | { |
9a3c8263 SM |
23656 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
23657 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
23658 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
23659 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 23660 | |
dee91e82 | 23661 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 23662 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
23663 | } |
23664 | ||
23665 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
23666 | table if necessary. For convenience, return TYPE. |
23667 | ||
23668 | The DIEs reading must have careful ordering to: | |
85102364 | 23669 | * Not cause infinite loops trying to read in DIEs as a prerequisite for |
7e314c57 JK |
23670 | reading current DIE. |
23671 | * Not trying to dereference contents of still incompletely read in types | |
23672 | while reading in other DIEs. | |
23673 | * Enable referencing still incompletely read in types just by a pointer to | |
23674 | the type without accessing its fields. | |
23675 | ||
23676 | Therefore caller should follow these rules: | |
23677 | * Try to fetch any prerequisite types we may need to build this DIE type | |
23678 | before building the type and calling set_die_type. | |
e71ec853 | 23679 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
23680 | possible before fetching more types to complete the current type. |
23681 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 23682 | |
f792889a | 23683 | static struct type * |
1c379e20 DJ |
23684 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
23685 | { | |
5e22e966 | 23686 | struct dwarf2_per_objfile *dwarf2_per_objfile = cu->per_objfile; |
dee91e82 | 23687 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
ed2dc618 | 23688 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3cdcd0ce JB |
23689 | struct attribute *attr; |
23690 | struct dynamic_prop prop; | |
1c379e20 | 23691 | |
b4ba55a1 JB |
23692 | /* For Ada types, make sure that the gnat-specific data is always |
23693 | initialized (if not already set). There are a few types where | |
23694 | we should not be doing so, because the type-specific area is | |
23695 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
23696 | where the type-specific area is used to store the floatformat). | |
23697 | But this is not a problem, because the gnat-specific information | |
23698 | is actually not needed for these types. */ | |
23699 | if (need_gnat_info (cu) | |
78134374 SM |
23700 | && type->code () != TYPE_CODE_FUNC |
23701 | && type->code () != TYPE_CODE_FLT | |
23702 | && type->code () != TYPE_CODE_METHODPTR | |
23703 | && type->code () != TYPE_CODE_MEMBERPTR | |
23704 | && type->code () != TYPE_CODE_METHOD | |
b4ba55a1 JB |
23705 | && !HAVE_GNAT_AUX_INFO (type)) |
23706 | INIT_GNAT_SPECIFIC (type); | |
23707 | ||
3f2f83dd KB |
23708 | /* Read DW_AT_allocated and set in type. */ |
23709 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
4fc6c0d5 | 23710 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 23711 | { |
09ba997f | 23712 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
9a49df9d | 23713 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
5c54719c | 23714 | type->add_dyn_prop (DYN_PROP_ALLOCATED, prop); |
3f2f83dd KB |
23715 | } |
23716 | else if (attr != NULL) | |
23717 | { | |
b98664d3 | 23718 | complaint (_("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 23719 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 23720 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
23721 | } |
23722 | ||
23723 | /* Read DW_AT_associated and set in type. */ | |
23724 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
4fc6c0d5 | 23725 | if (attr != NULL && attr->form_is_block ()) |
3f2f83dd | 23726 | { |
09ba997f | 23727 | struct type *prop_type = cu->per_cu->addr_sized_int_type (false); |
9a49df9d | 23728 | if (attr_to_dynamic_prop (attr, die, cu, &prop, prop_type)) |
5c54719c | 23729 | type->add_dyn_prop (DYN_PROP_ASSOCIATED, prop); |
3f2f83dd KB |
23730 | } |
23731 | else if (attr != NULL) | |
23732 | { | |
b98664d3 | 23733 | complaint (_("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 23734 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 23735 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
23736 | } |
23737 | ||
3cdcd0ce JB |
23738 | /* Read DW_AT_data_location and set in type. */ |
23739 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
9a49df9d | 23740 | if (attr_to_dynamic_prop (attr, die, cu, &prop, |
09ba997f | 23741 | cu->per_cu->addr_type ())) |
5c54719c | 23742 | type->add_dyn_prop (DYN_PROP_DATA_LOCATION, prop); |
3cdcd0ce | 23743 | |
ae090bdb SM |
23744 | if (dwarf2_per_objfile->die_type_hash == NULL) |
23745 | dwarf2_per_objfile->die_type_hash | |
0335378b TT |
23746 | = htab_up (htab_create_alloc (127, |
23747 | per_cu_offset_and_type_hash, | |
23748 | per_cu_offset_and_type_eq, | |
23749 | NULL, xcalloc, xfree)); | |
1c379e20 | 23750 | |
dee91e82 | 23751 | ofs.per_cu = cu->per_cu; |
9c541725 | 23752 | ofs.sect_off = die->sect_off; |
1c379e20 | 23753 | ofs.type = type; |
dee91e82 | 23754 | slot = (struct dwarf2_per_cu_offset_and_type **) |
ae090bdb | 23755 | htab_find_slot (dwarf2_per_objfile->die_type_hash.get (), &ofs, INSERT); |
7e314c57 | 23756 | if (*slot) |
b98664d3 | 23757 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 23758 | sect_offset_str (die->sect_off)); |
8d749320 SM |
23759 | *slot = XOBNEW (&objfile->objfile_obstack, |
23760 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 23761 | **slot = ofs; |
f792889a | 23762 | return type; |
1c379e20 DJ |
23763 | } |
23764 | ||
9c541725 | 23765 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 23766 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
23767 | |
23768 | static struct type * | |
9c541725 | 23769 | get_die_type_at_offset (sect_offset sect_off, |
673bfd45 | 23770 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 23771 | { |
dee91e82 | 23772 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
ed2dc618 | 23773 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
f792889a | 23774 | |
ae090bdb | 23775 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 23776 | return NULL; |
1c379e20 | 23777 | |
dee91e82 | 23778 | ofs.per_cu = per_cu; |
9c541725 | 23779 | ofs.sect_off = sect_off; |
9a3c8263 | 23780 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
ae090bdb | 23781 | htab_find (dwarf2_per_objfile->die_type_hash.get (), &ofs)); |
1c379e20 DJ |
23782 | if (slot) |
23783 | return slot->type; | |
23784 | else | |
23785 | return NULL; | |
23786 | } | |
23787 | ||
02142a6c | 23788 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
23789 | or return NULL if DIE does not have a saved type. */ |
23790 | ||
23791 | static struct type * | |
23792 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
23793 | { | |
9c541725 | 23794 | return get_die_type_at_offset (die->sect_off, cu->per_cu); |
673bfd45 DE |
23795 | } |
23796 | ||
10b3939b DJ |
23797 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
23798 | ||
23799 | static void | |
23800 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
23801 | struct dwarf2_per_cu_data *ref_per_cu) | |
23802 | { | |
23803 | void **slot; | |
23804 | ||
23805 | if (cu->dependencies == NULL) | |
23806 | cu->dependencies | |
23807 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
23808 | NULL, &cu->comp_unit_obstack, | |
23809 | hashtab_obstack_allocate, | |
23810 | dummy_obstack_deallocate); | |
23811 | ||
23812 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
23813 | if (*slot == NULL) | |
23814 | *slot = ref_per_cu; | |
23815 | } | |
1c379e20 | 23816 | |
f504f079 DE |
23817 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
23818 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
23819 | cache that we must keep because we are keeping CU. */ |
23820 | ||
10b3939b DJ |
23821 | static int |
23822 | dwarf2_mark_helper (void **slot, void *data) | |
23823 | { | |
23824 | struct dwarf2_per_cu_data *per_cu; | |
23825 | ||
23826 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
23827 | |
23828 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
23829 | reading of the chain. As such dependencies remain valid it is not much | |
23830 | useful to track and undo them during QUIT cleanups. */ | |
23831 | if (per_cu->cu == NULL) | |
23832 | return 1; | |
23833 | ||
10b3939b DJ |
23834 | if (per_cu->cu->mark) |
23835 | return 1; | |
9068261f | 23836 | per_cu->cu->mark = true; |
10b3939b DJ |
23837 | |
23838 | if (per_cu->cu->dependencies != NULL) | |
23839 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
23840 | ||
23841 | return 1; | |
23842 | } | |
23843 | ||
f504f079 DE |
23844 | /* Set the mark field in CU and in every other compilation unit in the |
23845 | cache that we must keep because we are keeping CU. */ | |
23846 | ||
ae038cb0 DJ |
23847 | static void |
23848 | dwarf2_mark (struct dwarf2_cu *cu) | |
23849 | { | |
23850 | if (cu->mark) | |
23851 | return; | |
9068261f | 23852 | cu->mark = true; |
10b3939b DJ |
23853 | if (cu->dependencies != NULL) |
23854 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
23855 | } |
23856 | ||
23857 | static void | |
23858 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
23859 | { | |
23860 | while (per_cu) | |
23861 | { | |
9068261f | 23862 | per_cu->cu->mark = false; |
ae038cb0 DJ |
23863 | per_cu = per_cu->cu->read_in_chain; |
23864 | } | |
72bf9492 DJ |
23865 | } |
23866 | ||
72bf9492 DJ |
23867 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
23868 | is its offset in .debug_info for this objfile. */ | |
23869 | ||
23870 | static hashval_t | |
23871 | partial_die_hash (const void *item) | |
23872 | { | |
9a3c8263 SM |
23873 | const struct partial_die_info *part_die |
23874 | = (const struct partial_die_info *) item; | |
9a619af0 | 23875 | |
9c541725 | 23876 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
23877 | } |
23878 | ||
23879 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
23880 | are equal if they have the same offset. */ | |
23881 | ||
23882 | static int | |
23883 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
23884 | { | |
9a3c8263 SM |
23885 | const struct partial_die_info *part_die_lhs |
23886 | = (const struct partial_die_info *) item_lhs; | |
23887 | const struct partial_die_info *part_die_rhs | |
23888 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 23889 | |
9c541725 | 23890 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
23891 | } |
23892 | ||
3c3bb058 AB |
23893 | struct cmd_list_element *set_dwarf_cmdlist; |
23894 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 | 23895 | |
9291a0cd | 23896 | static void |
cd4fb1b2 SM |
23897 | show_check_physname (struct ui_file *file, int from_tty, |
23898 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 23899 | { |
cd4fb1b2 SM |
23900 | fprintf_filtered (file, |
23901 | _("Whether to check \"physname\" is %s.\n"), | |
23902 | value); | |
9291a0cd TT |
23903 | } |
23904 | ||
6c265988 | 23905 | void _initialize_dwarf2_read (); |
cd4fb1b2 | 23906 | void |
6c265988 | 23907 | _initialize_dwarf2_read () |
9291a0cd | 23908 | { |
0743fc83 | 23909 | add_basic_prefix_cmd ("dwarf", class_maintenance, _("\ |
cd4fb1b2 | 23910 | Set DWARF specific variables.\n\ |
590042fc | 23911 | Configure DWARF variables such as the cache size."), |
0743fc83 TT |
23912 | &set_dwarf_cmdlist, "maintenance set dwarf ", |
23913 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 23914 | |
0743fc83 | 23915 | add_show_prefix_cmd ("dwarf", class_maintenance, _("\ |
590042fc PW |
23916 | Show DWARF specific variables.\n\ |
23917 | Show DWARF variables such as the cache size."), | |
0743fc83 TT |
23918 | &show_dwarf_cmdlist, "maintenance show dwarf ", |
23919 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 23920 | |
cd4fb1b2 SM |
23921 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
23922 | &dwarf_max_cache_age, _("\ | |
23923 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
23924 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
23925 | A higher limit means that cached compilation units will be stored\n\ | |
23926 | in memory longer, and more total memory will be used. Zero disables\n\ | |
23927 | caching, which can slow down startup."), | |
23928 | NULL, | |
23929 | show_dwarf_max_cache_age, | |
23930 | &set_dwarf_cmdlist, | |
23931 | &show_dwarf_cmdlist); | |
156942c7 | 23932 | |
cd4fb1b2 SM |
23933 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
23934 | Set debugging of the DWARF reader."), _("\ | |
23935 | Show debugging of the DWARF reader."), _("\ | |
23936 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
23937 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
23938 | information. A value greater than 1 provides more verbose information."), | |
23939 | NULL, | |
23940 | NULL, | |
23941 | &setdebuglist, &showdebuglist); | |
9291a0cd | 23942 | |
cd4fb1b2 SM |
23943 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
23944 | Set debugging of the DWARF DIE reader."), _("\ | |
23945 | Show debugging of the DWARF DIE reader."), _("\ | |
23946 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
23947 | The value is the maximum depth to print."), | |
23948 | NULL, | |
23949 | NULL, | |
23950 | &setdebuglist, &showdebuglist); | |
9291a0cd | 23951 | |
cd4fb1b2 SM |
23952 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
23953 | Set debugging of the dwarf line reader."), _("\ | |
23954 | Show debugging of the dwarf line reader."), _("\ | |
23955 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
23956 | A value of 1 (one) provides basic information.\n\ | |
23957 | A value greater than 1 provides more verbose information."), | |
23958 | NULL, | |
23959 | NULL, | |
23960 | &setdebuglist, &showdebuglist); | |
437afbb8 | 23961 | |
cd4fb1b2 SM |
23962 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
23963 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
23964 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
23965 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
23966 | the demangler."), | |
23967 | NULL, show_check_physname, | |
23968 | &setdebuglist, &showdebuglist); | |
900e11f9 | 23969 | |
e615022a DE |
23970 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
23971 | no_class, &use_deprecated_index_sections, _("\ | |
23972 | Set whether to use deprecated gdb_index sections."), _("\ | |
23973 | Show whether to use deprecated gdb_index sections."), _("\ | |
23974 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
23975 | Normally they are ignored either because of a missing feature or\n\ | |
23976 | performance issue.\n\ | |
23977 | Warning: This option must be enabled before gdb reads the file."), | |
23978 | NULL, | |
23979 | NULL, | |
23980 | &setlist, &showlist); | |
23981 | ||
f1e6e072 TT |
23982 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
23983 | &dwarf2_locexpr_funcs); | |
23984 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
23985 | &dwarf2_loclist_funcs); | |
23986 | ||
23987 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
23988 | &dwarf2_block_frame_base_locexpr_funcs); | |
23989 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
23990 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
23991 | |
23992 | #if GDB_SELF_TEST | |
23993 | selftests::register_test ("dw2_expand_symtabs_matching", | |
23994 | selftests::dw2_expand_symtabs_matching::run_test); | |
22b6cd70 TT |
23995 | selftests::register_test ("dwarf2_find_containing_comp_unit", |
23996 | selftests::find_containing_comp_unit::run_test); | |
c62446b1 | 23997 | #endif |
6502dd73 | 23998 | } |